:root{--ink:#1d2931;--muted:#6f7c83;--line:#e6e9e6;--paper:#f7f8f4;--white:#fff;--green:#3ba66b;--green-dark:#248556;--orange:#f3a34a;--purple:#8a6de9;--teal:#2ba4a0}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);margin:0;font-family:PingFang SC,Microsoft YaHei,Arial,sans-serif}button,input,select,textarea{font:inherit}button{color:inherit}.site-header{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);z-index:50;background:#fffffff0;align-items:center;height:76px;padding:0 clamp(22px,4vw,66px);display:flex;position:sticky;top:0}.brand-button{cursor:pointer;background:0 0;border:0;padding:0}.logo{align-items:center;gap:10px;min-width:210px;display:flex}.logo>span{background:#f1a84e;border-radius:12px 12px 16px 16px;width:38px;height:38px;position:relative;transform:rotate(-4deg);box-shadow:inset 0 -6px #9a56101f}.logo>span:before{content:"";background:#328d59;border-radius:50%;width:15px;height:8px;position:absolute;top:-3px;left:19px;transform:rotate(28deg)}.logo>span i{background:#fff8e6;border-radius:50%;width:5px;height:5px;position:absolute;top:13px}.logo>span i:first-child{left:8px}.logo>span i:nth-child(2){left:17px}.logo>span i:nth-child(3){left:26px}.logo b{letter-spacing:.08em;font:800 24px/1 Songti SC,serif}.logo small{color:#9aa39e;letter-spacing:.12em;text-align:left;width:48px;font:600 8px/1.2 Arial,sans-serif}.site-header nav{gap:7px;height:100%;display:flex}.site-header nav button{color:#758087;cursor:pointer;background:0 0;border:0;align-items:center;gap:8px;padding:0 17px;font-size:13px;display:flex;position:relative}.site-header nav button:after{content:"";background:var(--green);border-radius:4px;height:3px;transition:transform .2s;position:absolute;bottom:0;left:17px;right:17px;transform:scaleX(0)}.site-header nav button.active{color:var(--green-dark);font-weight:700}.site-header nav button.active:after{transform:scaleX(1)}.header-stats{align-items:center;gap:20px;margin-left:auto;display:flex}.header-stats>span{color:#f2943e;grid-template-columns:auto auto;align-items:center;column-gap:5px;display:grid}.header-stats>span:nth-child(2){color:#8a6de9}.header-stats b{font-size:13px}.header-stats small{color:#939c98;letter-spacing:.05em;text-align:center;grid-column:1/3;font-size:8px}.avatar{color:#fff;background:#263b44;border-radius:50%;place-items:center;width:38px;height:38px;font:700 11px Arial;display:grid;box-shadow:0 0 0 4px #edf0eb}.learn-page,.lesson-page,.admin-page{min-height:calc(100vh - 76px)}.welcome-panel{grid-template-columns:1.25fr .75fr;align-items:center;gap:60px;max-width:1380px;min-height:440px;margin:0 auto;padding:68px clamp(20px,5vw,70px);display:grid;position:relative;overflow:hidden}.welcome-panel:before{content:"";border:70px solid #3ba66b0f;border-radius:50%;width:580px;height:580px;position:absolute;top:-300px;right:-120px}.hello-pill{color:var(--green-dark);letter-spacing:.08em;background:#e6f4e9;border-radius:100px;padding:8px 12px;font-size:11px;font-weight:700;display:inline-block}.welcome-copy h1{letter-spacing:-.045em;margin:22px 0 20px;font:700 clamp(38px,4.4vw,66px)/1.15 Songti SC,Georgia,serif}.welcome-copy h1 em{color:var(--green);font-style:normal;position:relative}.welcome-copy h1 em:after{content:"";opacity:.45;z-index:-1;background:#f4c86b;border-radius:100%;height:7px;position:absolute;bottom:1px;left:0;right:0}.welcome-copy>p{color:var(--muted);max-width:650px;margin:0 0 30px;font:15px/1.8 Songti SC,serif}.primary-action{background:var(--green);color:#fff;cursor:pointer;border:0;border-radius:13px;align-items:center;gap:9px;padding:14px 20px;font-size:13px;font-weight:700;transition:transform .18s,box-shadow .18s;display:inline-flex;box-shadow:0 6px #268754,0 13px 27px #27845429}.primary-action:hover{transform:translateY(-2px);box-shadow:0 8px #268754,0 16px 30px #27845433}.daily-card{z-index:2;background:#fff;border:1px solid #e9ece7;border-radius:24px;align-items:center;gap:25px;padding:34px;display:flex;position:relative;box-shadow:0 22px 70px #2941341a}.daily-ring{aspect-ratio:1;background:conic-gradient(var(--green) 0 42%,#e8eee9 42%);border-radius:50%;place-items:center;width:112px;display:grid;position:relative}.daily-ring:before{content:"";background:#fff;border-radius:50%;position:absolute;inset:11px}.daily-ring span{color:var(--green-dark);font:700 23px Georgia;position:relative}.daily-card small{color:#8d9893;letter-spacing:.1em;font-size:9px}.daily-card b{margin:6px 0;font:700 18px Songti SC,serif;display:block}.daily-card p{color:#89938f;margin:0;font-size:10px;line-height:1.5}.daily-card .star{color:#f3b24b;font-size:20px;position:absolute;top:18px;right:20px}.library-section{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;padding:78px clamp(22px,5vw,76px) 90px}.section-title{justify-content:space-between;align-items:flex-end;max-width:1380px;margin:0 auto 30px;display:flex}.section-title span,.learning-path>div>span,.quiz-head>div>span,.admin-heading>div>span{color:var(--green-dark);letter-spacing:.14em;font-size:10px;font-weight:800}.section-title h2,.learning-path h2,.quiz-head h2{margin:8px 0 0;font:700 32px/1.2 Songti SC,serif}.section-title>p{color:#909995;font-size:11px}.category-row{gap:10px;max-width:1380px;margin:0 auto 32px;padding:2px 2px 8px;display:flex;overflow-x:auto}.category-row button{border:1px solid var(--line);cursor:pointer;text-align:left;background:#fff;border-radius:14px;grid-template-columns:30px 1fr auto;align-items:center;gap:7px;min-width:120px;padding:11px 13px;display:grid;box-shadow:0 2px #e4e8e3}.category-row button i{background:color-mix(in srgb,var(--category,#3ba66b) 13%,#fff);width:30px;height:30px;color:var(--category,#3ba66b);border-radius:9px;place-items:center;font-style:normal;font-weight:800;display:grid}.category-row button span{font-size:12px;font-weight:700}.category-row button small{color:#a3aaa7;font-size:10px}.category-row button.active{border-color:var(--category,var(--green));background:color-mix(in srgb,var(--category,var(--green)) 5%,#fff);box-shadow:0 3px 0 color-mix(in srgb,var(--category,var(--green)) 45%,#dce4dc)}.lesson-grid{grid-template-columns:repeat(3,1fr);gap:24px;max-width:1380px;margin:auto;display:grid}.lesson-card{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:20px;transition:transform .22s,box-shadow .22s;overflow:hidden}.lesson-card:hover{transform:translateY(-5px);box-shadow:0 20px 45px #253f311f}.cover{background:#344e58;height:220px;position:relative;overflow:hidden}.cover:after{content:"";background:linear-gradient(160deg,#ffffff21,#0000 45%,#0000002e);position:absolute;inset:0}.cover-orbit{border:1px solid #ffffff38;border-radius:50%;width:260px;height:260px;position:absolute;top:-76px;right:-40px}.cover-orbit:before,.cover-orbit:after{content:"";border:1px solid #ffffff1f;border-radius:50%;position:absolute;inset:35px}.cover-orbit:after{inset:80px}.cover-symbol{color:#fff;place-items:center;display:grid;position:absolute;inset:0}.cover-symbol>b,.cover-period{color:#fff;letter-spacing:.1em;text-shadow:0 2px 6px #0006;z-index:3;font:700 14px Georgia,Songti SC,serif;position:absolute;bottom:21px;right:24px}.cover-episode{-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);color:#fff;letter-spacing:.12em;z-index:3;background:#101a1e52;border:1px solid #fff3;border-radius:100px;padding:6px 9px;font-size:8px;position:absolute;top:16px;left:18px}.cover-coke{background:linear-gradient(135deg,#283b43,#8f3229)}.cover-container{background:linear-gradient(135deg,#23637a,#e4933d)}.cover-pompeii{background:linear-gradient(135deg,#433b55,#c55d3f)}.cover-tulip{background:linear-gradient(135deg,#6f3261,#d87a70)}.cover-sky{background:linear-gradient(135deg,#3a96bc,#e6af52)}.cover-water{background:linear-gradient(135deg,#194f70,#3bb8aa)}.cover-uploaded{background:linear-gradient(135deg,#355e53,#62ad75)}.cover .bottle{background:#391511;border-radius:13px 13px 18px 18px;width:46px;height:126px;position:relative;transform:rotate(-7deg);box-shadow:11px 15px 25px #00000040}.cover .bottle:before{content:"";background:#4a1813;border-radius:4px;width:22px;height:30px;position:absolute;top:-25px;left:12px}.cover .bottle:after{content:"5¢";text-align:center;color:#fff0d7;background:#b43a2d;padding:8px 0;font:700 16px Georgia;position:absolute;top:45px;left:-6px;right:-6px}.boxes{text-shadow:6px 7px #0000001a;font:700 43px/1.1 monospace;transform:rotate(-4deg)}.mountain{color:#3a2831;text-shadow:0 -16px #eea873a6;font-size:105px}.flower{color:#ffb2aa;font-size:125px;transform:rotate(20deg)}.sun{color:#ffd671;font-size:92px}.drop{color:#9be7e0;text-shadow:12px 13px #0000001f;font-size:115px}.lesson-card-copy{padding:20px 21px 22px}.lesson-tags{align-items:center;gap:10px;display:flex}.lesson-tags span{letter-spacing:.08em;color:var(--green-dark);font-size:9px;font-weight:800}.lesson-tags small{color:#99a29e;font-size:9px}.lesson-card h3{min-height:52px;margin:12px 0 6px;font:700 19px/1.4 Songti SC,serif}.lesson-card-copy>p{color:#7c888d;margin:0 0 18px;font-size:11px}.card-bottom{justify-content:space-between;align-items:center;display:flex}.card-bottom button{color:var(--green-dark);background:#e8f5eb;border:0;border-radius:8px;align-items:center;gap:5px;padding:7px 9px;font-size:9px;font-weight:800;display:flex}.card-bottom em{color:#9ca4a1;font-size:9px;font-style:normal}.mini-progress{align-items:center;gap:7px;display:flex}.mini-progress>span{background:#e8ece8;border-radius:8px;width:95px;height:6px;overflow:hidden}.mini-progress i{background:var(--green);border-radius:8px;height:100%;display:block}.mini-progress small{color:var(--green-dark);font-size:9px;font-weight:700}.learning-path{color:#fff;background:#263b43;border-radius:28px;grid-template-columns:.7fr 1.3fr;align-items:center;gap:50px;max-width:1240px;margin:80px auto;padding:48px 56px;display:grid;box-shadow:0 20px 60px #182c3429}.learning-path>div>span{color:#8ed2a6}.learning-path h2{color:#fff;margin:10px 0}.learning-path p{color:#b8c3c4;margin:0;font:12px/1.7 Songti SC,serif}.path-steps{justify-content:center;align-items:center;display:flex}.path-steps>span{text-align:center;min-width:105px}.path-steps>span i{color:#cad1d0;border:1px solid #ffffff40;border-radius:50%;place-items:center;width:42px;height:42px;margin:0 auto 9px;font-style:normal;font-weight:700;display:grid}.path-steps>span.done i{background:var(--green);border-color:var(--green);color:#fff}.path-steps b,.path-steps small{display:block}.path-steps b{margin-bottom:5px;font-size:10px}.path-steps small{color:#98a7a7;font-size:8px}.path-steps em{background:#ffffff2e;width:55px;height:1px;margin-bottom:34px}.back-button{color:#7f8a8f;cursor:pointer;background:0 0;border:0;align-items:center;gap:6px;margin:28px max(22px,50% - 690px);font-size:11px;display:flex}.lesson-hero{border:1px solid var(--line);background:#fff;border-radius:26px;grid-template-columns:1.15fr .85fr;max-width:1380px;margin:0 auto 80px;display:grid;overflow:hidden;box-shadow:0 25px 70px #263f3317}.lesson-video{background:#1d3038;min-height:540px;position:relative;overflow:hidden}.lesson-video>.cover{height:100%;position:absolute;inset:0}.lesson-video>.cover .cover-symbol{transform:scale(1.6)}.lesson-video video,.lesson-video iframe{object-fit:contain;background:#0d1113;border:0;width:100%;height:100%;position:absolute;inset:0}.big-play{z-index:4;width:76px;height:76px;color:var(--green-dark);cursor:pointer;background:#fff;border:7px solid #ffffff40;border-radius:50%;place-items:center;display:grid;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 15px 35px #0000004d}.demo-playing{z-index:5;color:#fff;background:#0c161ade;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.demo-playing>span{background:linear-gradient(90deg,var(--green) 0 68%,#ffffff29 68%);border-radius:4px;width:65%;height:5px;margin-bottom:17px}.demo-playing p{font:16px Songti SC,serif}.demo-playing button{color:#fff;cursor:pointer;background:0 0;border:1px solid #ffffff4d;border-radius:9px;padding:10px 14px;font-size:10px}.lesson-intro{flex-direction:column;padding:50px 48px;display:flex}.lesson-intro h1{letter-spacing:-.035em;margin:16px 0 10px;font:700 clamp(31px,3vw,48px)/1.22 Songti SC,serif}.lesson-intro>p{margin:0}.lesson-subtitle{color:#526760;font:700 17px/1.55 Songti SC,serif}.lesson-description{color:#74817c;font:13px/1.75 Songti SC,serif}.story-timeline{background:linear-gradient(145deg,#f8fbf7,#f2f7f2);border:1px solid #dfe9e1;border-radius:17px;margin:27px 0 25px;padding:20px 20px 18px}.story-timeline>header{justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:15px;display:flex}.story-timeline>header span{color:#3c8a61;letter-spacing:.13em;font-size:9px;font-weight:800}.story-timeline>header h2{color:#334a40;margin:0;font:700 17px Songti SC,serif}.story-timeline ol{margin:0;padding:0;list-style:none}.story-timeline li{grid-template-columns:30px minmax(0,1fr);gap:10px;display:grid}.story-timeline-marker{grid-template-rows:26px 1fr;justify-items:center;display:grid}.story-timeline-marker i{color:#347a54;background:#fff;border:1px solid #bad8c4;border-radius:50%;place-items:center;width:26px;height:26px;font-size:10px;font-style:normal;font-weight:800;display:grid;box-shadow:0 4px 10px #2f674714}.story-timeline-marker span{background:#cddfd2;width:1px;min-height:24px}.story-timeline li:last-child .story-timeline-marker span{display:none}.story-timeline-copy{padding:1px 0 16px}.story-timeline-copy time,.story-timeline-copy b{display:block}.story-timeline-copy time{color:#3b8960;font-size:11px;font-weight:800}.story-timeline-copy b{color:#2f453b;margin-top:3px;font:700 14px/1.4 Songti SC,serif}.story-timeline-copy p{color:#74817b;margin:5px 0 0;font-size:11px;line-height:1.55}.lesson-progress{border-top:1px solid var(--line);margin-top:auto;padding-top:24px}.lesson-progress>div{align-items:center;gap:10px;display:flex}.lesson-progress>div>span{background:#edf0ed;border-radius:10px;flex:1;height:8px;overflow:hidden}.lesson-progress i{background:var(--green);height:100%;display:block}.lesson-progress b{color:var(--green-dark);font-size:11px}.lesson-progress small{color:#98a09d;margin-top:9px;font-size:9px;display:block}.quiz-zone{max-width:980px;margin:0 auto;padding:0 22px 110px}.quiz-head{justify-content:space-between;align-items:end;margin-bottom:27px;display:flex}.quiz-head>div:last-child{color:var(--purple);align-items:center;gap:10px;display:flex}.quiz-head b,.quiz-head small{display:block}.quiz-head b{font-size:17px}.quiz-head small{color:#959e9a;font-size:8px}.quiz-card,.empty-quiz,.quiz-complete{border:1px solid var(--line);background:#fff;border-radius:24px;padding:38px;box-shadow:0 18px 55px #29403514}.quiz-count{align-items:center;gap:12px;display:flex}.quiz-count>span{background:#edf0ed;border-radius:7px;flex:1;height:7px;overflow:hidden}.quiz-count i{background:var(--purple);height:100%;display:block}.quiz-count small{color:#9aa29f;font-size:9px}.quiz-card h3{margin:30px 0 24px;font:700 24px/1.45 Songti SC,serif}.answer-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.answer-grid button{border:1px solid var(--line);text-align:left;cursor:pointer;background:#fff;border-radius:13px;align-items:center;gap:11px;min-height:60px;padding:11px 14px;font-size:12px;display:flex}.answer-grid button:hover{border-color:#a9b5af}.answer-grid button>i{background:#f2f4f1;border-radius:8px;place-items:center;width:30px;height:30px;font-style:normal;font-weight:700;display:grid}.answer-grid button>span{flex:1}.answer-grid button.correct{border-color:var(--green);color:var(--green-dark);background:#eef9f1}.answer-grid button.wrong{color:#b7433d;background:#fff1ef;border-color:#e46b62}.answer-feedback{border-radius:13px;justify-content:space-between;align-items:center;gap:20px;margin-top:22px;padding:18px;display:flex}.answer-feedback.good{color:#24774b;background:#e9f7ed}.answer-feedback.retry{color:#a8453d;background:#fff1ee}.answer-feedback b{font-size:12px}.answer-feedback p{margin:4px 0 0;font-size:10px;line-height:1.6}.answer-feedback button,.empty-quiz button,.quiz-complete button{cursor:pointer;background:currentColor;border:0;border-radius:9px;padding:10px 14px;font-size:10px}.answer-feedback button{color:#fff;background:var(--green)}.retry button{background:#c45148}.empty-quiz,.quiz-complete{text-align:center;color:#7e898e}.empty-quiz h3,.quiz-complete h3{color:var(--ink);font:700 23px Songti SC,serif}.empty-quiz p,.quiz-complete p{font-size:11px}.empty-quiz button,.quiz-complete button{background:var(--green);color:#fff}.quiz-complete>span{width:58px;height:58px;color:var(--green);background:#e5f5e9;border-radius:50%;place-items:center;margin:auto;font-size:28px;display:grid}.admin-page{max-width:1530px;margin:auto;padding:58px clamp(22px,5vw,76px) 100px}.admin-heading{justify-content:space-between;align-items:center;margin-bottom:35px;display:flex}.admin-heading h1{margin:9px 0;font:700 38px Songti SC,serif}.admin-heading p{color:#7f8b90;margin:0;font-size:11px}.admin-stats{grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:25px;display:grid}.admin-stats article{border:1px solid var(--line);background:#fff;border-radius:16px;align-items:center;gap:15px;padding:20px;display:flex}.stat-icon{border-radius:13px;place-items:center;width:46px;height:46px;display:grid}.stat-icon.orange{color:#d88226;background:#fff1df}.stat-icon.purple{color:#7057c8;background:#eeeafd}.stat-icon.teal{color:#218d89;background:#e3f4f2}.admin-stats small,.admin-stats b,.admin-stats p{display:block}.admin-stats small{color:#8c9793;font-size:9px}.admin-stats b{margin:3px 0;font-size:24px}.admin-stats p{color:#9ca4a1;margin:0;font-size:9px}.admin-layout{grid-template-columns:minmax(0,1fr) 300px;gap:22px;display:grid}.content-table,.admin-side>div{border:1px solid var(--line);background:#fff;border-radius:17px}.table-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:22px;display:flex}.table-heading span{color:var(--green-dark);letter-spacing:.1em;font-size:9px;font-weight:800}.table-heading h2{margin:4px 0 0;font:700 25px Songti SC,serif}.table-heading>div:last-child{gap:8px;display:flex}.table-heading button{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:9px;align-items:center;gap:6px;padding:8px 10px;font-size:9px;display:flex}.table-list>article{border-bottom:1px solid var(--line);grid-template-columns:92px minmax(210px,1fr) 76px 45px 38px;align-items:center;gap:13px;padding:13px 18px;display:grid}.table-list>article:last-child{border-bottom:0}.cover.mini{border-radius:9px;height:58px}.cover.mini .cover-symbol{transform:scale(.45)}.cover.mini .cover-episode,.cover.mini .cover-orbit{display:none}.table-title b,.table-title span,.table-title small{display:block}.table-title b{white-space:nowrap;text-overflow:ellipsis;font:700 12px Songti SC,serif;overflow:hidden}.table-title span{color:#939d99;margin-top:5px;font-size:8px}.table-title small{color:#4f9a6b;margin-top:4px;font-size:8px}.publish-state{cursor:pointer;background:0 0;border:0;align-items:center;gap:6px;font-size:9px;display:flex}.publish-state i{border-radius:50%;width:7px;height:7px}.publish-state.live{color:#318a57}.publish-state.live i{background:#4ab272;box-shadow:0 0 0 4px #e3f4e8}.publish-state.draft{color:#9b7a42}.publish-state.draft i{background:#dda64f;box-shadow:0 0 0 4px #fff3df}.row-action,.delete-action{color:#5f777f;cursor:pointer;background:0 0;border:0;padding:0;font-size:8px}.delete-action{color:#c76b63}.admin-side{flex-direction:column;gap:18px;display:flex}.storage-note{padding:24px}.storage-note>span{width:42px;height:42px;color:var(--green-dark);background:#e9f5ec;border-radius:12px;place-items:center;display:grid}.storage-note h3{margin:17px 0 9px;font:700 18px Songti SC,serif}.storage-note p{color:#637177;font-size:10px;line-height:1.65}.storage-note small{border-top:1px solid var(--line);color:#a0783e;padding-top:13px;font-size:9px;line-height:1.6;display:block}.category-admin{padding:20px}.category-admin>div{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.category-admin>div>span{font-size:11px;font-weight:700}.category-admin>div button{color:var(--green-dark);cursor:pointer;background:#edf5ee;border:0;border-radius:7px;place-items:center;width:26px;height:26px;display:grid}.category-admin p{grid-template-columns:32px 1fr auto;align-items:center;gap:9px;margin:9px 0;display:grid}.category-admin p i{color:#fff;border-radius:9px;place-items:center;width:32px;height:32px;font-style:normal;display:grid}.category-admin p b{font-size:10px}.category-admin p small{color:#9ca4a1;font-size:8px}.modal-backdrop{z-index:100;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#142227b8;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.modal{background:#fff;border-radius:22px;width:min(680px,100%);max-height:calc(100vh - 40px);padding:34px;position:relative;overflow:auto;box-shadow:0 30px 90px #0000004d}.modal-close{cursor:pointer;background:#f0f3ef;border:0;border-radius:50%;place-items:center;width:32px;height:32px;display:grid;position:absolute;top:20px;right:20px}.modal-kicker{color:var(--green-dark);letter-spacing:.12em;font-size:9px;font-weight:800}.modal h2{margin:8px 0;font:700 30px Songti SC,serif}.modal form>p{color:#88938f;margin:0 0 22px;font-size:10px}.file-drop{color:var(--green-dark);cursor:pointer;background:#f7faf7;border:1.5px dashed #b9c9bf;border-radius:14px;flex-direction:column;align-items:center;gap:6px;margin-bottom:22px;padding:25px;display:flex}.file-drop b{font-size:11px}.file-drop small{color:#98a19e;font-size:8px}.file-drop input{max-width:240px;margin-top:6px;font-size:8px}.form-grid{grid-template-columns:1fr 1fr;gap:14px;display:grid}.form-grid label{display:block}.form-grid label.wide{grid-column:1/3}.form-grid label>span{color:#6f7b80;margin-bottom:6px;font-size:9px;font-weight:700;display:block}.form-grid input,.form-grid select,.form-grid textarea{border:1px solid var(--line);width:100%;color:var(--ink);background:#fff;border-radius:9px;outline:none;padding:10px 11px;font-size:10px}.form-grid input:focus,.form-grid select:focus,.form-grid textarea:focus{border-color:var(--green)}.form-grid .color-input{height:38px;padding:5px}.modal-submit{background:var(--green);color:#fff;cursor:pointer;width:100%;box-shadow:0 4px 0 var(--green-dark);border:0;border-radius:10px;margin-top:20px;padding:12px;font-size:11px;font-weight:700}@media (width<=1050px){.lesson-grid{grid-template-columns:repeat(2,1fr)}.welcome-panel{grid-template-columns:1fr}.daily-card{max-width:500px}.learning-path,.lesson-hero{grid-template-columns:1fr;margin-left:22px;margin-right:22px}.lesson-video{min-height:460px}.admin-layout{grid-template-columns:1fr}.admin-side{grid-template-columns:1fr 1fr;display:grid}}@media (width<=760px){.site-header{height:66px;padding:0 15px}.logo{min-width:0}.logo small{display:none}.site-header nav{border-top:1px solid var(--line);z-index:80;background:#fff;justify-content:space-around;height:62px;position:fixed;bottom:0;left:0;right:0}.site-header nav button{flex-direction:column;justify-content:center;gap:3px;padding:0 12px;font-size:8px}.site-header nav button:after{top:0;bottom:auto}.header-stats>span{display:none}.avatar{width:34px;height:34px}.learn-page,.lesson-page,.admin-page{padding-bottom:63px}.welcome-panel{min-height:0;padding:52px 20px}.welcome-copy h1{font-size:42px}.daily-card{padding:25px}.library-section{padding:58px 18px}.section-title{flex-direction:column;align-items:start}.section-title>p{margin-top:10px}.lesson-grid{grid-template-columns:1fr}.lesson-card{grid-template-columns:42% 58%;display:grid}.cover{height:100%;min-height:230px}.lesson-card h3{font-size:17px}.learning-path{padding:35px 25px}.path-steps>span{min-width:78px}.path-steps em{width:18px}.lesson-video{min-height:310px}.lesson-intro{padding:34px 25px}.answer-grid{grid-template-columns:1fr}.answer-feedback{flex-direction:column;align-items:flex-start}.admin-page{padding:38px 15px 90px}.admin-heading{flex-direction:column;align-items:flex-start;gap:22px}.admin-heading h1{font-size:31px}.admin-stats{grid-template-columns:1fr}.table-heading{flex-direction:column;align-items:flex-start;gap:18px}.table-list>article{grid-template-columns:70px 1fr 68px}.row-action,.delete-action{display:none}.admin-side,.form-grid{grid-template-columns:1fr}.form-grid label.wide{grid-column:auto}.modal{padding:28px 20px}.quiz-card{padding:25px 18px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition-duration:.01ms!important}}.auth-shell,.admin-guard{background:radial-gradient(circle at 20% 10%,#e5f4e8,#0000 34%),#f4f6f1;place-items:center;min-height:100vh;padding:28px;display:grid}.auth-card,.admin-guard>section{border:1px solid var(--line);background:#fff;border-radius:26px;width:min(460px,100%);padding:40px;box-shadow:0 28px 80px #1f372b1f}.auth-brand{color:var(--ink);align-items:center;gap:11px;text-decoration:none;display:flex}.auth-mark,.remote-admin-header>a>span{background:var(--green);color:#fff;border-radius:13px;place-items:center;width:42px;height:42px;font:800 20px Songti SC,serif;display:grid}.auth-brand b,.auth-brand small{display:block}.auth-brand small{letter-spacing:.14em;color:#9aa39e;margin-top:4px;font-size:7px}.auth-heading>span,.remote-admin-title>div>span,.remote-admin-toolbar>div>span,.remote-modal form>span{letter-spacing:.14em;color:var(--green-dark);font-size:9px;font-weight:800}.auth-heading h1{margin:8px 0;font:700 36px Songti SC,serif}.auth-heading p{color:var(--muted);font-size:11px;line-height:1.7}.auth-form label,.remote-modal label{color:#647179;margin:14px 0;font-size:10px;font-weight:700;display:block}.auth-form label>span{margin-bottom:7px;display:block}.auth-form input,.remote-modal input,.remote-modal select,.remote-modal textarea{border:1px solid var(--line);background:#fff;border-radius:10px;outline:none;width:100%;padding:12px}.auth-form input:focus,.remote-modal input:focus,.remote-modal select:focus,.remote-modal textarea:focus{border-color:var(--green)}.auth-form>button,.remote-modal form>button{background:var(--green);color:#fff;cursor:pointer;border:0;border-radius:11px;width:100%;margin-top:8px;padding:13px;font-weight:700}.auth-form>button:disabled,.remote-modal button:disabled{opacity:.6;cursor:wait}.auth-error,.admin-message{color:#a7433c;background:#fff0ed;border-radius:10px;padding:11px;font-size:10px;line-height:1.5}.auth-return{color:#6e7d82;margin-top:23px;font-size:10px;text-decoration:none;display:inline-block}.admin-guard h1{margin:28px 0 10px;font:700 32px Songti SC,serif}.admin-guard p{color:var(--muted);font-size:12px;line-height:1.7}.admin-guard div{gap:10px;margin-top:22px;display:flex}.admin-guard a,.admin-guard button{border:1px solid var(--line);color:var(--ink);cursor:pointer;background:#fff;border-radius:9px;padding:10px 12px;font-size:10px;text-decoration:none}.remote-admin{background:#f5f6f2;min-height:100vh}.remote-admin-header{border-bottom:1px solid var(--line);background:#fff;justify-content:space-between;align-items:center;height:72px;padding:0 clamp(20px,5vw,70px);display:flex}.remote-admin-header>a{color:var(--ink);align-items:center;gap:10px;text-decoration:none;display:flex}.remote-admin-header>a div b,.remote-admin-header>a div small{display:block}.remote-admin-header nav{align-items:center;gap:10px;display:flex}.remote-admin-header nav a,.remote-admin-header nav button{border:1px solid var(--line);color:#67757a;cursor:pointer;background:#fff;border-radius:9px;padding:9px 11px;font-size:9px;text-decoration:none}.remote-admin-body{max-width:1440px;margin:auto;padding:56px clamp(20px,5vw,70px) 100px}.remote-admin-title{justify-content:space-between;align-items:center;margin-bottom:30px;display:flex}.remote-admin-title h1{margin:9px 0;font:700 40px Songti SC,serif}.remote-admin-title p{color:var(--muted);margin:0;font-size:11px}.remote-admin-title>button{background:var(--green);color:#fff;cursor:pointer;border:0;border-radius:11px;padding:13px 16px;font-weight:700}.remote-admin-stats{grid-template-columns:repeat(3,1fr);gap:17px;margin:20px 0;display:grid}.remote-admin-stats article{border:1px solid var(--line);background:#fff;border-radius:16px;padding:21px}.remote-admin-stats small,.remote-admin-stats b,.remote-admin-stats span{display:block}.remote-admin-stats b{margin:4px 0;font-size:28px}.remote-admin-content{border:1px solid var(--line);background:#fff;border-radius:18px;overflow:hidden}.remote-admin-toolbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:22px;display:flex}.remote-admin-toolbar h2{margin:5px 0 0;font:700 25px Songti SC,serif}.remote-admin-toolbar>div:last-child{gap:8px;display:flex}.remote-admin-toolbar button{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:9px;padding:9px 11px;font-size:9px}.remote-admin-list>article{border-bottom:1px solid var(--line);grid-template-columns:94px minmax(230px,1fr) 76px 42px;align-items:center;gap:14px;padding:14px 20px;display:grid}.remote-admin-list>article:last-child{border:0}.admin-cover{color:#fff;text-align:center;background:#355e53;border-radius:9px;place-items:center;height:58px;font-size:9px;display:grid}.remote-admin-list article>div b,.remote-admin-list article>div small,.remote-admin-list article>div a{display:block}.remote-admin-list article>div small{color:#909a96;margin-top:5px;font-size:8px}.remote-admin-list article>div a{color:var(--green-dark);margin-top:5px;font-size:8px;text-decoration:none}.remote-admin-list button{cursor:pointer;background:0 0;border:0;font-size:9px}.remote-admin-list .is-live{color:#2b8b56}.remote-admin-list .is-draft{color:#a17737}.remote-admin-list .admin-delete{color:#bd5b55}.remote-modal{z-index:100;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#162328b3;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.remote-modal>section{background:#fff;border-radius:22px;width:min(680px,100%);max-height:calc(100vh - 40px);padding:34px;position:relative;overflow:auto}.remote-modal-close{cursor:pointer;background:#eef1ed;border:0;border-radius:50%;width:32px;height:32px;font-size:20px;position:absolute;top:18px;right:18px}.remote-modal h2{margin:8px 0;font:700 29px Songti SC,serif}.remote-modal form>p{color:var(--muted);font-size:10px;line-height:1.6}.admin-form-row{grid-template-columns:1fr 1fr 1fr;gap:12px;display:grid}.admin-form-row.two{grid-template-columns:1fr 1fr}.remote-modal label{line-height:2}.remote-modal textarea{resize:vertical}.remote-modal input[type=color]{height:43px;padding:4px}@media (width<=760px){.auth-card,.admin-guard>section{padding:28px 22px}.remote-admin-header{padding:0 15px}.remote-admin-header nav a{display:none}.remote-admin-body{padding:36px 14px 70px}.remote-admin-title{flex-direction:column;align-items:flex-start;gap:22px}.remote-admin-title h1{font-size:32px}.remote-admin-stats{grid-template-columns:1fr}.remote-admin-toolbar{flex-direction:column;align-items:flex-start;gap:16px}.remote-admin-list>article{grid-template-columns:70px 1fr 65px}.remote-admin-list .admin-delete{display:none}.admin-form-row,.admin-form-row.two{grid-template-columns:1fr}.remote-modal>section{padding:28px 20px}}.story-period{color:#66756e;background:#f5faf6;border:1px solid #dce8df;border-radius:999px;align-self:flex-start;align-items:center;gap:9px;margin:17px 0 20px;padding:7px 11px;display:inline-flex}.story-period span{letter-spacing:.04em;font-size:10px}.story-period b{color:#347c55;letter-spacing:.03em;font:700 12px/1.2 Georgia,Songti SC,serif}.remote-admin-list .admin-video{color:var(--green-dark);background:#eff8f1;border:1px solid #dce9df;border-radius:8px;padding:8px 6px}.remote-admin-list button:disabled{cursor:wait;opacity:.55}.video-connected{color:var(--green-dark);margin-top:5px;font-size:8px;display:block}.stream-file-drop{text-align:center;cursor:pointer;background:#f5faf6;border:1.5px dashed #aec6b5;border-radius:15px;margin:20px 0 14px;padding:24px}.stream-file-drop b,.stream-file-drop small{display:block}.stream-file-drop b{color:var(--green-dark);font-size:13px}.stream-file-drop small{color:#84918b;margin:4px 0 10px;font-size:9px}.stream-file-drop input{border:0;width:auto;max-width:100%;padding:5px;font-size:9px}.stream-upload-state{grid-template-columns:1fr 54px;align-items:center;gap:9px;margin:14px 0 4px;display:grid}.stream-upload-state>div{background:#e8ede9;border-radius:10px;height:9px;overflow:hidden}.stream-upload-state>div i{background:var(--green);border-radius:10px;height:100%;transition:width .25s;display:block}.stream-upload-state>span{color:var(--green-dark);text-align:right;font-size:10px;font-weight:800}.stream-upload-state>p{grid-column:1/3;margin:0!important;font-size:10px!important}.stream-upload-state.error>div i{background:#ca5a52}.stream-upload-state.error>span,.stream-upload-state.error>p{color:#a7433c}.stream-upload-state.processing>div i{background:linear-gradient(90deg,#79b98f,#3ba66b,#79b98f) 0 0/200% 100%;animation:1.6s linear infinite stream-pulse;width:100%!important}.stream-hint{margin-top:10px!important}@keyframes stream-pulse{to{background-position:-200% 0}}@media (width<=760px){.remote-admin-list>article{grid-template-columns:70px minmax(0,1fr) 65px}.remote-admin-list .admin-video{grid-column:2;padding:7px 6px}.remote-admin-list .is-live,.remote-admin-list .is-draft{grid-area:1/3/3}}.remote-admin-list>article{grid-template-columns:94px minmax(230px,1fr) 116px 64px 42px}.admin-row-actions{grid-template-columns:1fr 1fr;gap:6px;display:grid}.remote-admin-list .admin-row-actions button{border:1px solid var(--line);color:#607077;background:#fff;border-radius:8px;min-height:32px;padding:6px 4px}.remote-admin-list .admin-row-actions .admin-video{color:var(--green-dark);background:#eff8f1;border-color:#dce9df}.remote-admin-list .admin-row-actions .admin-knowledge{color:#246947;background:#e9f6ed;border-color:#c9e3d3;grid-column:1/-1;font-weight:800}.cover>.cover-photo{object-fit:cover;z-index:1;width:100%;height:100%;position:absolute;inset:0}.cover.cover-custom .cover-orbit,.cover.cover-custom .cover-symbol{display:none}.cover.cover-custom .cover-episode{z-index:2}.admin-category-groups{background:#f7f8f4;gap:22px;padding:22px;display:grid}.admin-category-group{border:1px solid var(--line);background:#fff;border-radius:16px;overflow:hidden}.admin-category-heading{border-bottom:1px solid var(--line);background:color-mix(in srgb, var(--category) 6%, #fff);align-items:center;gap:12px;padding:15px 18px;display:flex}.admin-category-heading>i{background:var(--category);color:#fff;border-radius:11px;place-items:center;width:38px;height:38px;font-size:17px;font-style:normal;display:grid}.admin-category-heading h3{margin:0;font:700 19px Songti SC,serif}.admin-category-heading span{color:#8b9691;margin-top:3px;font-size:9px;display:block}.admin-category-group .remote-admin-list>article:last-child{border-bottom:0}.admin-category-group .cover.mini{width:94px}.admin-category-empty{color:#8b9691;margin:0;padding:25px 20px;font-size:11px}.lesson-editor label{font-size:13px}.lesson-editor input,.lesson-editor select,.lesson-editor textarea{font-size:14px}.cover-photo-field>span{margin-bottom:7px;display:block}.cover-photo-field>div{aspect-ratio:16/7;color:#fff;background:linear-gradient(135deg,#355e53,#62ad75);border-radius:14px;place-items:center;width:100%;display:grid;position:relative;overflow:hidden}.cover-photo-field>div img{object-fit:cover;width:100%;height:100%}.cover-photo-field>div.has-preset>.cover{aspect-ratio:auto;border-radius:0;width:100%;height:100%}.cover-photo-field>div b{font-size:15px}.cover-photo-field>div small{color:#fff;background:#0c181b9e;border-radius:99px;padding:4px 7px;font-size:11px;position:absolute;bottom:8px;right:10px}.cover-photo-field>input{border-style:dashed;margin-top:9px;padding:8px}.cover-photo-field>em{color:#8b9691;margin-top:5px;font-size:11px;font-style:normal;display:block}.lesson-edit-quiz{border-top:1px solid var(--line);margin-top:28px;padding-top:24px}.lesson-edit-quiz>div{grid-template-columns:1fr auto;align-items:end;display:grid}.lesson-edit-quiz>div span{color:var(--purple);letter-spacing:.12em;grid-column:1/3;font-size:11px;font-weight:800}.lesson-edit-quiz h3{margin:5px 0 0;font:700 20px Songti SC,serif}.lesson-edit-quiz small{color:#7d8984;font-size:12px}.lesson-edit-quiz ol{color:#56656b;margin:14px 0;padding-left:22px;font-size:13px;line-height:1.6}.lesson-edit-quiz>button{color:#674fbd;cursor:pointer;background:#f5f2ff;border:1px solid #ddd8f7;border-radius:10px;width:100%;padding:12px;font-size:13px;font-weight:700}.quiz-lesson-name{background:#f1f6f2;border-radius:10px;padding:11px 13px;font-weight:700;color:var(--green-dark)!important;font-size:13px!important}.lesson-edit-interactions{border-top:1px solid var(--line);margin-top:28px;padding-top:24px}.lesson-edit-interactions>header{justify-content:space-between;align-items:end;gap:12px;display:flex}.lesson-edit-interactions>header span{color:#2d8d67;letter-spacing:.12em;font-size:10px;font-weight:800;display:block}.lesson-edit-interactions h3{margin:5px 0 2px;font:700 20px Songti SC,serif}.lesson-edit-interactions header small{color:#7d8984;font-size:11px}.lesson-edit-interactions header>button,.interaction-form-heading button,.interaction-choice-editor>div>button{color:#317451;cursor:pointer;background:#eff8f1;border:1px solid #cfe4d7;border-radius:9px;padding:9px 11px;font-size:11px;font-weight:700}.interaction-admin-list{gap:8px;margin-top:14px;display:grid}.interaction-admin-list article{border:1px solid var(--line);background:#fafbf8;border-radius:11px;grid-template-columns:66px minmax(0,1fr) auto auto;align-items:center;gap:9px;padding:11px;display:grid}.interaction-admin-list b,.interaction-admin-list small{display:block}.interaction-admin-list article>div:nth-child(2) b{font-size:12px}.interaction-admin-list small{color:#8b9691;margin-top:3px;font-size:9px}.interaction-time{text-align:center}.interaction-time b{color:#2e7c57;font-size:16px}.interaction-admin-list article>button{color:#477665;cursor:pointer;background:0 0;border:0;font-size:10px}.interaction-admin-list article>.interaction-delete{color:#b8544f}.interaction-admin-form{background:#f7fbf8;border:1px solid #cfe4d7;border-radius:14px;margin-top:16px;padding:16px}.interaction-form-heading,.interaction-choice-editor>div{justify-content:space-between;align-items:center;gap:10px;display:flex}.interaction-form-heading>b{font:700 17px Songti SC,serif}.interaction-form-heading button{border-color:var(--line);color:#687770;background:#fff;padding:6px 9px}.interaction-form-row{grid-template-columns:1fr 1fr;align-items:end;gap:12px;display:grid}.interaction-active-toggle{border:1px solid var(--line);background:#fff;border-radius:10px;align-items:center;gap:8px;min-height:42px;padding:0 11px;display:flex!important}.interaction-active-toggle input{width:auto!important}.interaction-choice-editor{margin-top:18px}.interaction-choice-editor>div>b{font-size:12px}.interaction-choice-editor>div>button{padding:6px 9px}.interaction-choice-editor fieldset{border:1px solid var(--line);background:#fff;border-radius:11px;margin:11px 0 0;padding:10px 12px 12px;position:relative}.interaction-choice-editor legend{color:#397859;padding:0 6px;font-size:10px;font-weight:800}.interaction-choice-editor fieldset label{margin:8px 0}.remove-interaction-choice{color:#b8544f;cursor:pointer;background:0 0;border:0;font-size:10px}.interaction-admin-form>.interaction-save{color:#fff;cursor:pointer;background:#3b9365;border:0;border-radius:10px;width:100%;margin-top:13px;padding:12px;font-weight:800}.route-admin-editor{background:#fffdf8;border:1px solid #d9d5c8;border-radius:16px;margin-top:22px;padding:20px}.route-admin-editor>header span{color:#aa6a20}.route-admin-editor>header>button{color:#925817;background:#fff6e5;border-color:#ead7b6}.route-admin-form{background:#fffbf3;border-color:#ead7b6}.route-map-upload small{color:#84908b;margin-top:5px;font-size:10px;font-weight:500;display:block}.route-map-upload img{aspect-ratio:790/500;border:1px solid var(--line);object-fit:cover;border-radius:10px;width:min(100%,440px);margin-top:9px;display:block}.route-advanced{background:#fff;border:1px solid #e2ddd0;border-radius:12px;margin-top:15px;padding:12px}.route-advanced summary{color:#6e512d;cursor:pointer;font-size:12px;font-weight:800}.route-advanced>p{color:#85908b;margin:7px 0 12px;font-size:10px;line-height:1.5}.route-config-heading{justify-content:space-between;align-items:center;margin:12px 0 7px;display:flex}.route-config-heading b{color:#394b44;font-size:11px}.route-config-heading button{color:#8a5b24;cursor:pointer;background:#fff8e9;border:1px solid #ddd3c1;border-radius:8px;padding:5px 8px;font-size:9px;font-weight:700}.route-node-editor,.route-edge-editor{gap:8px;display:grid}.route-node-editor fieldset,.route-edge-editor fieldset{border:1px solid #e5e1d8;border-radius:9px;grid-template-columns:.65fr 1fr 1fr .55fr .55fr auto;align-items:end;gap:7px;margin:0;padding:8px;display:grid}.route-node-editor legend,.route-edge-editor legend{color:#9b641f;padding:0 5px;font-size:9px;font-weight:800}.route-node-editor label,.route-edge-editor label{margin:0;font-size:9px}.route-node-editor input,.route-edge-editor input,.route-edge-editor select{min-height:34px;padding:6px!important;font-size:10px!important}.route-node-editor fieldset>button,.route-edge-editor fieldset>button{color:#b8544f;cursor:pointer;background:0 0;border:0;min-height:34px;font-size:9px}@media (width<=900px){.route-node-editor fieldset,.route-edge-editor fieldset{grid-template-columns:repeat(2,1fr)}.route-node-editor fieldset>button,.route-edge-editor fieldset>button{grid-column:1/-1}}.lesson-workspace-shell{max-width:1560px;margin:0 auto;padding:28px clamp(20px,4vw,62px) 80px}.lesson-workspace-header{grid-template-columns:150px minmax(0,1fr) 120px;align-items:center;gap:20px;margin-bottom:24px;display:grid}.lesson-workspace-header>button:first-child{color:#66766f;cursor:pointer;background:0 0;border:0;justify-self:start;font-size:13px;font-weight:700}.lesson-workspace-header>div{min-width:0}.lesson-workspace-header>div>span{color:#3b8c65;letter-spacing:.12em;font-size:11px;font-weight:800}.lesson-workspace-header h1{color:#22362f;text-overflow:ellipsis;white-space:nowrap;margin:5px 0 4px;font:700 clamp(25px,3vw,36px)/1.25 Songti SC,serif;overflow:hidden}.lesson-workspace-header small{color:#839089;font-size:12px}.workspace-publish{color:#fff;cursor:pointer;background:#397f5b;border:0;border-radius:11px;min-height:43px;font-size:13px;font-weight:800}.workspace-publish.is-live{color:#317451;background:#eef7f1;border:1px solid #c8dfd0}.workspace-publish:disabled{cursor:wait;opacity:.6}.workspace-message{margin:-8px 0 18px}.lesson-workspace-grid{grid-template-columns:minmax(380px,.88fr) minmax(500px,1.12fr);align-items:start;gap:24px;display:grid}.lesson-workspace-preview{background:#fff;border:1px solid #dfe5df;border-radius:20px;position:sticky;top:22px;overflow:hidden;box-shadow:0 18px 50px #23362e14}.workspace-player{aspect-ratio:16/9;background:#0c1112;width:100%;position:relative;overflow:hidden}.workspace-player>iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.workspace-player-empty{color:#fff;text-align:center;place-content:center;justify-items:center;gap:6px;padding:20px;display:grid;position:absolute;inset:0}.workspace-player-empty i{color:#8fd2a7;background:#ffffff1f;border-radius:50%;place-items:center;width:48px;height:48px;margin-bottom:5px;font-style:normal;display:grid}.workspace-player-empty b{font-size:15px}.workspace-player-empty span{color:#93a39d;font-size:12px}.workspace-player-status{background:#f8faf7;border-bottom:1px solid #e6eae5;justify-content:space-between;align-items:center;gap:18px;padding:14px 16px;display:flex}.workspace-player-status>div{flex:none}.workspace-player-status small,.workspace-player-status b{display:block}.workspace-player-status small{color:#809087;font-size:11px}.workspace-player-status b{color:#2f7250;font-variant-numeric:tabular-nums;margin-top:2px;font-size:24px}.workspace-player-status>span{color:#74827b;text-align:right;max-width:250px;font-size:12px;line-height:1.55}.workspace-video-actions{border-bottom:1px solid #e6eae5;grid-template-columns:1fr 1fr;gap:9px;padding:12px 14px;display:grid}.workspace-video-actions button,.workspace-video-actions a{color:#47665a;cursor:pointer;background:#fff;border:1px solid #d7e1da;border-radius:10px;place-items:center;min-height:41px;font-size:13px;font-weight:700;text-decoration:none;display:grid}.workspace-video-actions button{color:#317451;background:#eef7f1}.workspace-section-nav{padding:7px;display:grid}.workspace-section-nav button{color:#354b42;text-align:left;cursor:pointer;background:0 0;border:0;border-radius:12px;grid-template-columns:35px 1fr;align-items:center;gap:11px;padding:12px;display:grid}.workspace-section-nav button>i{color:#86918c;background:#f0f2ef;border-radius:10px;place-items:center;width:35px;height:35px;font-size:11px;font-style:normal;font-weight:800;display:grid}.workspace-section-nav button.is-active>i{color:#fff;background:#438763}.workspace-section-nav b,.workspace-section-nav small{display:block}.workspace-section-nav small{color:#8a9690;margin-top:3px;font-size:12px}.story-period-field small{color:#87938d;margin-top:6px;font-size:12px;font-weight:400;line-height:1.55;display:block}.lesson-workspace-editor{min-width:0}.workspace-form,.workspace-content-panel{background:#fff;border:1px solid #dfe5df;border-radius:20px;padding:clamp(22px,3vw,36px);box-shadow:0 18px 50px #23362e12}.workspace-editor-heading{margin-bottom:24px;position:relative}.workspace-editor-heading>span{color:#438763;letter-spacing:.12em;font-size:11px;font-weight:800}.workspace-editor-heading h2{color:#243b32;margin:6px 0;font:700 29px/1.3 Songti SC,serif}.workspace-editor-heading p{color:#7c8882;max-width:540px;margin:0;font-size:13px;line-height:1.65}.workspace-editor-heading>button{color:#fff;cursor:pointer;background:#4c8e69;border:0;border-radius:10px;min-height:40px;padding:0 14px;font-size:13px;font-weight:800;position:absolute;top:3px;right:0}.lesson-workspace-editor label{color:#596b63;margin:16px 0;font-size:14px;font-weight:700;line-height:1.8;display:block}.lesson-workspace-editor input,.lesson-workspace-editor select,.lesson-workspace-editor textarea{color:#253a32;width:100%;min-height:44px;font:inherit;background:#fff;border:1px solid #d9e1dc;border-radius:10px;outline:none;padding:11px 12px;font-weight:400}.lesson-workspace-editor textarea{resize:vertical}.workspace-form .cover-photo-field{margin-bottom:22px}.workspace-save-bar{z-index:3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#f8fbf8f5;border:1px solid #dce6df;border-radius:13px;justify-content:space-between;align-items:center;gap:14px;margin:28px -12px -12px;padding:12px;display:flex;position:sticky;bottom:12px;box-shadow:0 10px 28px #29483a1f}.workspace-save-bar span{color:#7f8d86;font-size:12px}.workspace-save-bar button{color:#fff;cursor:pointer;background:#3f895f;border:0;border-radius:10px;min-height:42px;padding:0 18px;font-size:13px;font-weight:800}.workspace-save-bar button:disabled{cursor:wait;opacity:.65}.workspace-quiz-panel>ol{gap:11px;margin:0;padding:0;list-style:none;display:grid}.workspace-quiz-panel>ol li{background:#fafbf9;border:1px solid #e0e5e0;border-radius:13px;grid-template-columns:42px 1fr;align-items:center;gap:13px;padding:15px;display:grid}.workspace-quiz-panel>ol li>i{color:#6d5ab1;background:#f0edfb;border-radius:11px;place-items:center;width:42px;height:42px;font-size:12px;font-style:normal;font-weight:800;display:grid}.workspace-quiz-panel li b,.workspace-quiz-panel li small{display:block}.workspace-quiz-panel li b{color:#33483f;font-size:14px;line-height:1.5}.workspace-quiz-panel li small{color:#87928d;margin-top:5px;font-size:12px}.workspace-empty-state{color:#43584f;text-align:center;background:#f8faf7;border:1px dashed #cfdbd2;border-radius:15px;justify-items:center;gap:5px;padding:55px 20px;display:grid}.workspace-empty-state span{color:#85918b;font-size:13px}.timeline-admin-summary{background:#f5faf6;border:1px solid #dce7df;border-radius:14px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:18px;padding:15px 16px;display:grid}.timeline-admin-summary>div span,.timeline-admin-summary>div b{display:block}.timeline-admin-summary>div span{color:#7b8982;font-size:11px}.timeline-admin-summary>div b{color:#347854;margin-top:2px;font-size:21px}.timeline-admin-summary p{color:#718078;margin:0;font-size:13px;line-height:1.6}.timeline-admin-summary>button{color:#fff;cursor:pointer;white-space:nowrap;background:#438763;border:0;border-radius:10px;min-height:42px;padding:0 14px;font-size:13px;font-weight:800}.timeline-admin-summary>button:disabled{cursor:not-allowed;opacity:.55}.timeline-admin-list{gap:0;margin:22px 0 0;padding:0;list-style:none;display:grid}.timeline-admin-list>li{grid-template-columns:40px minmax(0,1fr) 70px;gap:13px;display:grid}.timeline-admin-index{grid-template-rows:34px 1fr;justify-items:center;display:grid}.timeline-admin-index i{color:#347854;background:#e7f3ea;border-radius:10px;place-items:center;width:34px;height:34px;font-size:11px;font-style:normal;font-weight:800;display:grid}.timeline-admin-index span{background:#cddfd2;width:1px}.timeline-admin-list>li:last-child .timeline-admin-index span{display:none}.timeline-admin-fields{background:#fafbf9;border:1px solid #e0e6e1;border-radius:13px;margin-bottom:14px;padding:2px 15px 5px}.timeline-admin-fields label{margin:10px 0}.timeline-admin-row{grid-template-columns:minmax(130px,.42fr) minmax(0,1fr);gap:12px;display:grid}.timeline-admin-actions{grid-template-columns:1fr 1fr;align-content:start;gap:6px;display:grid}.timeline-admin-actions button{color:#587066;cursor:pointer;background:#fff;border:1px solid #d9e2dc;border-radius:8px;min-height:34px;font-size:13px}.timeline-admin-actions button:disabled{cursor:not-allowed;opacity:.35}.timeline-admin-actions .is-delete{color:#ae514d;grid-column:1/3;font-size:11px}.workspace-interaction-panel .lesson-edit-interactions{border-top:0;margin-top:0;padding-top:0}.workspace-interaction-panel .lesson-edit-interactions>header{background:#f5faf6;border:1px solid #dce7df;border-radius:13px;padding:15px 16px}.interaction-time-input{grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:8px;display:grid}.interaction-time-input label{margin-bottom:0}.interaction-time-input>button{color:#377653;white-space:nowrap;cursor:pointer;background:#edf7f0;border:1px solid #cfe2d6;border-radius:10px;min-height:44px;margin-bottom:0;padding:0 11px;font-size:11px;font-weight:800}.interaction-time-input>button:disabled{color:#9aa49f;cursor:not-allowed;opacity:.7}@media (width<=1050px){.lesson-workspace-grid{grid-template-columns:1fr}.lesson-workspace-preview{position:static}.workspace-section-nav{grid-template-columns:repeat(4,1fr);gap:5px}}@media (width<=760px){.admin-category-groups{gap:14px;padding:12px}.remote-admin-list>article{grid-template-columns:70px minmax(0,1fr) 65px}.admin-category-group .cover.mini{width:70px}.admin-row-actions{grid-area:2/2}.lesson-edit-interactions>header{flex-direction:column;align-items:stretch}.interaction-admin-list article{grid-template-columns:56px 1fr auto}.interaction-admin-list article>.interaction-delete{grid-column:3}.interaction-form-row{grid-template-columns:1fr}.lesson-workspace-shell{padding:18px 11px calc(65px + env(safe-area-inset-bottom))}.lesson-workspace-header{grid-template-columns:1fr auto;gap:12px;margin-bottom:16px}.lesson-workspace-header>button:first-child{grid-column:1/3;min-height:38px;padding:0}.lesson-workspace-header h1{white-space:normal;font-size:25px}.lesson-workspace-header small{line-height:1.5;display:block}.workspace-publish{min-width:92px}.lesson-workspace-grid{gap:14px}.lesson-workspace-preview,.workspace-form,.workspace-content-panel{border-radius:16px}.workspace-player-status{align-items:flex-end;padding:12px}.workspace-player-status>span{max-width:210px;font-size:11px}.workspace-section-nav{scrollbar-width:none;gap:6px;padding:8px;display:flex;overflow-x:auto}.workspace-section-nav button{flex:none;grid-template-columns:28px auto;min-width:142px;padding:10px}.workspace-section-nav button>i{border-radius:8px;width:28px;height:28px}.workspace-section-nav small{font-size:10px}.workspace-form,.workspace-content-panel{padding:20px 15px}.workspace-editor-heading{margin-bottom:20px}.workspace-editor-heading h2{font-size:26px}.workspace-editor-heading>button{width:100%;margin-top:15px;position:static}.workspace-save-bar{bottom:calc(8px + env(safe-area-inset-bottom));margin-left:0;margin-right:0}.workspace-save-bar span{display:none}.workspace-save-bar button{width:100%}.interaction-time-input{grid-template-columns:1fr}.timeline-admin-summary{grid-template-columns:1fr;gap:10px}.timeline-admin-summary>button{width:100%}.timeline-admin-list>li{grid-template-columns:34px minmax(0,1fr);gap:9px}.timeline-admin-actions{grid-column:2;grid-template-columns:44px 44px 1fr;margin:-7px 0 17px}.timeline-admin-actions .is-delete{grid-column:auto}.timeline-admin-row{grid-template-columns:1fr;gap:0}.interaction-time-input>button{width:100%}}.decision-video-experience{background:#0d1113;position:absolute;inset:0}:is(.decision-video-experience:fullscreen,.decision-video-experience.is-interactive-fullscreen){background:#080b0c;width:100vw;height:100vh;inset:0}.decision-video-experience.is-pseudo-fullscreen{z-index:999;position:fixed}.decision-video-experience>iframe,.branch-video-stage>iframe{background:#0d1113;border:0;width:100%;height:100%;position:absolute;inset:0}.interaction-replay-bar{z-index:5;color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#0c181cc7;border:1px solid #ffffff2e;border-radius:99px;align-items:center;gap:7px;max-width:calc(100% - 28px);padding:7px 8px 7px 11px;display:flex;position:absolute;top:14px;left:14px}.interactive-fullscreen-button{z-index:10;color:#fff;cursor:pointer;opacity:.86;-webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);background:#0a1215c2;border:1px solid #fff3;border-radius:10px;place-items:center;width:39px;height:39px;transition:opacity .2s,transform .2s,background .2s;display:grid;position:absolute;top:14px;bottom:auto;right:14px}.interactive-fullscreen-button:hover,.interactive-fullscreen-button:focus-visible{opacity:1;outline-offset:2px;background:#2a5b45f0;outline:2px solid #90dcabcc;transform:translateY(-1px)}.decision-video-experience.has-active-interaction .interactive-fullscreen-button{top:13px;bottom:auto}.mobile-quality-button,.mobile-quality-note{display:none}.interactive-fullscreen-button svg{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;width:19px;height:19px}.interaction-upcoming{z-index:6;color:#e8f7ed;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#10231fdb;border:1px solid #9fe1b666;border-radius:99px;align-items:center;gap:8px;padding:8px 13px;animation:.35s ease-out both interaction-upcoming-in;display:flex;position:absolute;top:18px;left:50%;transform:translate(-50%)}.interaction-upcoming i{color:#92d9aa;font-style:normal;animation:1s ease-in-out infinite alternate interaction-pulse}.interaction-upcoming span{white-space:nowrap;font-size:11px;font-weight:700}.interaction-replay-bar span,.interaction-replay-bar button{font-size:10px}.interaction-replay-bar button{color:#315f4b;cursor:pointer;background:#fff;border:0;border-radius:99px;padding:6px 9px;font-weight:700}.decision-overlay{z-index:8;color:#213a31;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:linear-gradient(#0710112e 0%,#0710116b 46%,#071011b8 100%);place-items:end center;padding:24px 34px 30px;animation:.32s ease-out both decision-overlay-in;display:grid;position:absolute;inset:0}.decision-card{scrollbar-width:thin;background:#fcfbf7f7;border:1px solid #ffffffb8;border-radius:24px;width:min(680px,100%);max-height:100%;padding:24px 27px 20px;animation:.46s cubic-bezier(.2,.8,.2,1) both decision-card-in;overflow-y:auto;box-shadow:0 24px 70px #02120e47,0 2px 12px #02120e1f}.decision-kicker{color:#3a775b;letter-spacing:.12em;justify-content:space-between;align-items:center;font-size:10px;font-weight:800;display:flex}.decision-kicker span{align-items:center;gap:7px;display:inline-flex}.decision-kicker span i{background:#66ad81;border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 5px #66ad8124}.decision-kicker small{color:#82938c;letter-spacing:0;font-size:11px}.decision-time{color:#788a82;margin:11px 0 0;font-size:11px;line-height:1.45}.decision-card h2{color:#20372f;margin:7px 0 18px;font:700 26px/1.38 Songti SC,serif}.decision-choices{gap:10px;display:grid}.decision-choices button{color:#284139;text-align:left;cursor:pointer;opacity:0;background:#fff;border:1px solid #dce6df;border-radius:14px;align-items:center;gap:12px;min-height:56px;padding:10px 14px;transition:border-color .18s,background .18s,box-shadow .18s,opacity .18s,transform .18s;animation:.38s cubic-bezier(.2,.8,.2,1) both decision-choice-in;display:flex;box-shadow:0 4px 14px #2642370f}.decision-choices button:hover:not(:disabled),.decision-choices button:focus-visible:not(:disabled){background:#f7fbf8;border-color:#82bd98;outline:none;transform:translateY(-1px);box-shadow:0 7px 20px #32664d1f}.decision-choices i{color:#3d7559;background:#eef7f1;border:1px solid #c8ddcf;border-radius:50%;flex:0 0 31px;place-items:center;width:31px;height:31px;font-style:normal;font-weight:800;transition:color .18s,background .18s,border-color .18s;display:grid}.decision-choices span{flex:1;font-size:13px;line-height:1.5}.decision-choices.is-answering button:not(.is-selected){opacity:.46}.decision-choices button.is-selected{background:#eff8f2;border-color:#64a97e;transform:scale(.992);box-shadow:0 0 0 3px #64a97e21,0 8px 22px #32664d1f}.decision-choices button.is-selected i{color:#fff;background:#4e956a;border-color:#4e956a}.decision-choices button:disabled{cursor:default}.decision-replay-note{color:#8a9993;text-align:center;margin:12px 0 0;font-size:10px}.decision-text-feedback{color:#5d4a2e;background:#fff8eb;border:1px solid #eddcbb;border-radius:16px;padding:18px 19px;animation:.28s ease-out both decision-feedback-in}.decision-text-feedback span{color:#a06c24;font-size:11px;font-weight:800}.decision-text-feedback p{margin:9px 0 17px;font-size:13px;line-height:1.75}.decision-text-feedback button,.branch-video-toolbar button{color:#fff;cursor:pointer;background:#315f4b;border:0;border-radius:9px;padding:10px 13px;font-weight:700}.decision-sync-error{color:#a04439;margin:12px 0 0;font-size:10px}.decision-overlay.mode-branch{background:#080b0c;padding:0}.branch-video-stage{position:absolute;inset:0}@keyframes interaction-upcoming-in{0%{opacity:0;transform:translate(-50%,-8px)}to{opacity:1;transform:translate(-50%)}}@keyframes interaction-pulse{0%{opacity:.72;transform:scale(.86)}to{opacity:1;transform:scale(1.12)}}@keyframes decision-overlay-in{0%{opacity:0;-webkit-backdrop-filter:blur();backdrop-filter:blur()}to{opacity:1;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}}@keyframes decision-card-in{0%{opacity:0;transform:translateY(22px)scale(.98)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes decision-choice-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes decision-feedback-in{0%{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}.branch-video-toolbar{z-index:2;color:#dbe5e1;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#080e10c7;border-radius:12px;justify-content:space-between;align-items:center;gap:10px;padding:8px 9px 8px 12px;display:flex;position:absolute;top:13px;left:13px;right:13px}.branch-video-toolbar span{font-size:10px}.branch-video-toolbar button{color:#315f4b;background:#fff;padding:7px 10px;font-size:10px}@media (width<=760px){.decision-overlay{padding:9px}.interactive-fullscreen-button{width:38px;height:38px;top:8px;bottom:auto;right:8px}.mobile-quality-button{z-index:10;color:#fff;-webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);background:#0a1215c2;border:1px solid #fff3;border-radius:10px;align-items:center;gap:5px;min-height:38px;padding:7px 10px;display:inline-flex;position:absolute;top:8px;right:54px}.mobile-quality-button span,.mobile-quality-button b{font-size:11px;line-height:1}.mobile-quality-button b{color:#a9e0ba}.mobile-quality-note{z-index:11;color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#0a1215eb;border:1px solid #ffffff2e;border-radius:11px;gap:4px;width:min(248px,100% - 16px);padding:11px 13px;display:grid;position:absolute;top:54px;right:8px;box-shadow:0 10px 28px #0000003d}.mobile-quality-note b{font-size:12px}.mobile-quality-note span{color:#d2ddda;font-size:11px;line-height:1.5}.decision-video-experience.has-active-interaction .mobile-quality-button,.decision-video-experience.has-active-interaction .mobile-quality-note{display:none}.decision-video-experience.has-active-interaction .interactive-fullscreen-button{top:8px;right:8px}.interaction-upcoming{padding:6px 10px;top:54px}.decision-card{border-radius:16px;padding:12px 13px 10px}.decision-time,.decision-replay-note{display:none}.decision-card h2{margin:6px 0 9px;font-size:17px;line-height:1.3}.decision-choices{gap:7px}.decision-choices button{border-radius:11px;min-height:40px;padding:6px 9px}.decision-choices i{flex-basis:28px;width:28px;height:28px}.decision-choices span,.decision-text-feedback p{font-size:12px}.decision-text-feedback{padding:13px}.decision-text-feedback p{margin:5px 0 10px;line-height:1.5}.decision-text-feedback button{min-height:38px}.interaction-replay-bar{max-width:calc(100% - 188px);padding:4px;top:8px;left:8px}.interaction-replay-bar span{display:none}.interaction-replay-bar button{white-space:nowrap;min-height:38px;padding:7px 10px}.decision-video-experience.is-interactive-fullscreen .interactive-fullscreen-button,.decision-video-experience.is-interactive-fullscreen .mobile-quality-button{top:max(8px, env(safe-area-inset-top))}.branch-video-toolbar span{max-width:58%}.decision-video-experience.is-interactive-fullscreen .decision-overlay{align-items:end;padding:64px 0 0}.decision-video-experience.is-interactive-fullscreen .decision-card{width:100%;max-height:84vh;padding:24px 20px calc(22px + env(safe-area-inset-bottom));border-bottom:0;border-left:0;border-right:0;border-radius:26px 26px 0 0}.decision-video-experience.is-interactive-fullscreen .decision-time,.decision-video-experience.is-interactive-fullscreen .decision-replay-note{display:block}.decision-video-experience.is-interactive-fullscreen .decision-time{margin-top:13px;font-size:12px}.decision-video-experience.is-interactive-fullscreen .decision-card h2{margin:8px 0 19px;font-size:24px;line-height:1.38}.decision-video-experience.is-interactive-fullscreen .decision-choices{gap:10px}.decision-video-experience.is-interactive-fullscreen .decision-choices button{border-radius:14px;min-height:56px;padding:10px 13px}.decision-video-experience.is-interactive-fullscreen .decision-choices i{flex-basis:32px;width:32px;height:32px}.decision-video-experience.is-interactive-fullscreen .decision-choices span,.decision-video-experience.is-interactive-fullscreen .decision-text-feedback p{font-size:14px}.decision-video-experience.is-interactive-fullscreen .decision-replay-note{margin-top:14px}}@media (prefers-reduced-motion:reduce){.interaction-upcoming,.interaction-upcoming i,.decision-overlay,.decision-card,.decision-text-feedback,.decision-choices button{animation:none}.decision-choices button{opacity:1}}.route-overlay{z-index:9;color:#20283a;-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);background:#070d12e0;padding:16px;animation:.3s ease-out both decision-overlay-in;position:fixed;inset:0;overflow:auto}.decision-video-experience.has-route-interaction .interactive-fullscreen-button{z-index:12;position:fixed;top:9px;bottom:auto;right:9px}.route-game-card{background:#f7f4ed;border:1px solid #d5d9df;border-radius:20px;width:min(790px,100%);margin:auto;animation:.46s cubic-bezier(.2,.8,.2,1) both route-card-in;overflow:hidden;box-shadow:0 22px 70px #00000057}.route-game-scroll{min-width:0}.route-player-strip{color:#edf2fb;background:#131d2d;justify-content:space-between;align-items:center;gap:12px;padding:10px 16px;font-size:12px;display:flex}.route-player-strip span,.route-player-strip b{align-items:center;gap:8px;font-weight:600;display:flex}.route-player-strip span i{background:#e9a63d;border-radius:50%;width:9px;height:9px;box-shadow:0 0 0 5px #e9a63d24}.route-player-strip strong{color:#ffc666;font-variant-numeric:tabular-nums}.route-heading{background:#fffdf8;padding:14px 18px 11px}.route-heading small{color:#966118;letter-spacing:.1em;font-size:12px;font-weight:800}.route-heading h2{color:#20283a;margin:4px 0 0;font:700 clamp(19px,3vw,26px)/1.3 Songti SC,serif}.route-heading p{color:#5b6270;margin:5px 0 0;font-size:14px;line-height:1.55}.route-rules{background:#f7f2e7;border-block:1px solid #dfd9cc;padding:9px 16px 12px}.route-rules>b{color:#443a29;font-size:13px}.route-rules>b small{color:#8c7d65;letter-spacing:.12em;margin-left:6px;font-size:11px}.route-rules>div{background:#cdbf9d;border:1px solid #cdbf9d;border-radius:10px;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:7px;display:grid;overflow:hidden}.route-rules span{color:#453b2a;background:#fff9e9;align-items:center;gap:7px;min-height:40px;padding:7px 9px;font-size:12px;display:flex}.route-rules span i{color:#fff8e8;background:#b96820;border-radius:50%;flex:0 0 21px;place-items:center;height:21px;font-style:normal;font-weight:700;display:grid}.route-map-viewport{background:#759bad;width:100%;position:relative;overflow:hidden}.route-map-mobile-hint{display:none}.route-map-wrap{aspect-ratio:790/500;background:#759bad;width:100%;min-height:310px;position:relative;overflow:hidden}.route-map-wrap>img{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.route-map{width:100%;height:100%;display:block;position:relative}.route-water{fill:#739bad}.route-ripple{fill:none;stroke:#dfeff05c;stroke-width:2px}.route-bank{fill:#c8b987;stroke:#8c805d;stroke-width:2px}.route-island{fill:#bcae78;stroke:#80734f;stroke-width:2.5px}.route-road{fill:none;stroke:#6756326b;stroke-width:5px;stroke-linecap:round}.route-building{fill:#87684a;stroke:#604a36;stroke-width:1px}.route-roof{fill:#9d4f3e;stroke:#66392f;stroke-width:1px}.route-cathedral{fill:#76624b;stroke:#473d33;stroke-width:1.5px}.route-cathedral-roof{fill:#70483e;stroke:#47332e;stroke-width:1.5px}.route-map-label{fill:#3b3428;paint-order:stroke;stroke:#ebdfbaeb;stroke-width:5px;stroke-linejoin:round;text-anchor:middle;font-size:14px;font-weight:600}.route-map-year{fill:#2d271db8;letter-spacing:.08em;font-size:13px;font-weight:700}.route-bridge-base{fill:none;stroke:#ded0aa;stroke-width:16px;stroke-linecap:round;filter:drop-shadow(0 3px 2px #2a231647)}.route-bridge-cobbles{fill:none;stroke:#796e58;stroke-width:2px;stroke-dasharray:5 4}.route-edge-highlight{fill:none;stroke:#f0a33b;stroke-width:7px;stroke-linecap:round;opacity:0}.route-edge-highlight.is-used{opacity:.72}.route-trail{fill:none;stroke:#f58a24;stroke-width:4px;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:3 10;filter:drop-shadow(0 1px 1px #492b0d73);pointer-events:none}.route-node,.route-edge{font:inherit;cursor:pointer;position:absolute;transform:translate(-50%,-50%)}.route-node{color:#40351f;background:#f7e5b4e8;border:1px solid #664f2b94;border-radius:9px;min-width:72px;min-height:44px;padding:6px 8px;font-size:12px;font-weight:700;transition:transform .16s,box-shadow .16s;box-shadow:0 3px 9px #231e1633}.route-node span,.route-node small{display:block}.route-node small{opacity:.72;margin-top:1px;font-size:10px;font-weight:500}.route-node.is-visited{color:#fff8ec;background:#c76218f2;border-color:#8b4815}.route-node.is-current{transform:translate(-50%,-50%)scale(1.04);box-shadow:0 0 0 5px #ffc25261,0 4px 12px #231e164d}.route-node>i,.route-edge>i{color:#fff;background:#a84b15;border:2px solid #fff5d4;border-radius:50%;place-items:center;width:19px;height:19px;font-size:9px;font-style:normal;display:grid;position:absolute;top:-8px;right:-7px;box-shadow:0 2px 5px #2f1e0d47}.route-edge{background:0 0;border:0;border-radius:50%;place-items:center;width:48px;height:48px;padding:0;font-size:10px;font-weight:700;display:grid}.route-edge>span{color:#493a25;background:#faebc4f0;border:1px solid #5d482894;border-radius:50%;place-items:center;width:35px;height:35px;padding:2px;display:grid;box-shadow:0 2px 6px #241f173d}.route-edge.is-available>span{border-color:#b66221;box-shadow:0 0 0 4px #eea53f38}.route-edge.is-used>span{color:#fff;background:#bd5c18;border-color:#8b4815}.route-footer{background:#fffdf8;padding:10px 16px 14px}.route-footer>p{color:#4f596a;min-height:20px;margin:0 0 8px;font-size:13px;line-height:1.5}.route-footer>p.error{color:#9f362d}.route-footer>p.good{color:#256c4a}.route-footer>div{flex-wrap:wrap;gap:8px;display:flex}.route-footer button{color:#273044;min-height:44px;font:inherit;cursor:pointer;background:#f4efe5;border:1px solid #cfc8b9;border-radius:9px;padding:8px 13px;font-size:13px;font-weight:700}.route-footer .route-history-action{color:#34404e;background:#f7f5ef;border-color:#c5c7c3;justify-content:center;align-items:center;gap:7px;display:inline-flex}.route-footer .route-history-action>span{color:#8a6331;font-size:19px;font-weight:500;line-height:1}.route-footer .route-reset{color:#704f2a;background:#fff8e8;border-color:#d8c092}.route-footer button:disabled{opacity:1;color:#8b928f;cursor:default;background:#edf0ed;border-color:#d9ddd9}.route-footer button:disabled>span{color:#a4aaa7}.route-footer .route-continue{background:#ffc666;border-color:#cc861f;margin-left:auto}@keyframes route-card-in{0%{opacity:0;transform:translateY(18px)scale(.985)}to{opacity:1;transform:translateY(0)scale(1)}}@media (width<=760px){.route-overlay{background:#131d2d;width:100%;height:100dvh;padding:0;overflow:hidden}.route-game-card{height:100%;min-height:0;box-shadow:none;border:0;border-radius:0;flex-direction:column;display:flex}.route-player-strip{padding:calc(10px + env(safe-area-inset-top)) 48px 10px 12px;flex:none;font-size:12px}.route-game-scroll{overscroll-behavior-y:contain;-webkit-overflow-scrolling:touch;touch-action:pan-x pan-y;flex:auto;min-height:0;overflow:hidden auto}.route-heading{padding:12px 13px 10px}.route-heading small{font-size:11px}.route-heading h2{font-size:20px}.route-heading p{font-size:14px}.route-rules{padding:9px 12px 11px}.route-rules>div{grid-template-columns:1fr}.route-rules span{min-height:44px;padding:7px 9px;font-size:13px}.route-map-viewport{overscroll-behavior-x:contain;overscroll-behavior-y:auto;-webkit-overflow-scrolling:touch;touch-action:pan-x pan-y;scrollbar-width:thin;overflow:auto hidden}.route-map-mobile-hint{z-index:8;color:#fff;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);pointer-events:none;background:#111f27b8;border-radius:999px;margin:8px 0 -32px 10px;padding:6px 9px;font-size:12px;display:inline-block;position:sticky;top:8px;left:10px}.route-map-wrap{width:520px;min-height:0}.route-node{min-width:72px;min-height:44px;padding:6px 7px;font-size:12px}.route-node small{font-size:10px}.route-edge{width:48px;height:48px}.route-edge>span{width:35px;height:35px;font-size:10px}.route-footer{z-index:12;padding:9px 11px calc(12px + env(safe-area-inset-bottom));border-top:1px solid #e2ddcf;flex:none;position:relative;box-shadow:0 -8px 24px #131d2d1f}.route-footer>p{min-height:0;margin-bottom:9px;font-size:12px}.route-footer>div{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.route-footer button{border-radius:11px;min-width:0;min-height:46px;padding-inline:8px}.route-footer .route-history-action{font-size:12px}.route-footer .route-continue{grid-column:1/-1;width:100%;margin-left:0}}@media (prefers-reduced-motion:reduce){.route-game-card{animation:none}}.auth-switch{background:#eef1ed;border-radius:12px;grid-template-columns:1fr 1fr;gap:5px;padding:5px;display:grid}.auth-switch button{color:#7a8581;cursor:pointer;background:0 0;border:0;border-radius:9px;padding:10px;font-size:12px;font-weight:700}.auth-switch button.active{color:var(--green-dark);background:#fff;box-shadow:0 2px 8px #23392d14}.auth-method-switch{border-bottom:1px solid #e8ece8;gap:20px;margin:19px 0 2px;display:flex}.auth-method-switch button{color:#8b9591;cursor:pointer;background:0 0;border:0;padding:0 2px 10px;font-size:13px;font-weight:700;position:relative}.auth-method-switch button:after{content:"";background:0 0;border-radius:2px;height:2px;position:absolute;bottom:-1px;left:0;right:0}.auth-method-switch button.active{color:var(--green-dark)}.auth-method-switch button.active:after{background:var(--green)}.auth-phone-fields{grid-template-columns:minmax(125px,.9fr) minmax(0,1.2fr);gap:10px;display:grid}.auth-form select{border:1px solid var(--line);width:100%;min-height:42px;color:var(--ink);background:#fff;border-radius:10px;outline:none;padding:11px 10px}.auth-form select:focus{border-color:var(--green)}.auth-phone-note{color:#687772;background:#f2f7f2;border-radius:9px;margin:-2px 0 13px;padding:10px 11px;font-size:12px;line-height:1.6}.auth-success{color:#24774b;background:#eaf7ed;border-radius:10px;padding:11px;font-size:11px;line-height:1.6}.user-login-link{background:var(--green);color:#fff;border-radius:10px;margin-left:auto;padding:10px 14px;font-size:12px;font-weight:700;text-decoration:none}.user-account{align-items:center;gap:9px;display:flex}.user-account-copy b,.user-account-copy small{text-overflow:ellipsis;white-space:nowrap;max-width:130px;display:block;overflow:hidden}.user-account-copy b{font-size:11px}.user-account-copy small{color:#929b97;margin-top:2px;font-size:8px}.user-signout{color:#89938f;cursor:pointer;background:0 0;border:0;font-size:9px}.mark-video-button{width:100%;color:var(--green-dark);cursor:pointer;background:#eef8f1;border:1px solid #d8eadc;border-radius:9px;margin-top:13px;padding:10px 12px;font-size:11px;font-weight:700}.quiz-score{color:var(--green-dark);margin:5px 0 0;font:700 26px Georgia,serif;display:inline-block}.quiz-completed-at{color:#8a9590;margin-top:7px;font-size:10px;display:block}.card-bottom em.quiz-recorded{color:var(--green-dark);font-style:normal;font-weight:800}.user-system-stats{grid-template-columns:repeat(4,1fr)}.learner-admin-panel{border:1px solid var(--line);background:#fff;border-radius:18px;margin:20px 0;overflow:hidden}.learner-admin-panel>header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;padding:20px 22px;display:flex}.learner-admin-panel>header>div:first-child>span{color:var(--green-dark);letter-spacing:.14em;font-size:9px;font-weight:800}.learner-admin-panel h2{margin:5px 0 0;font:700 24px Songti SC,serif}.invite-code-note{background:#eef8f1;border-radius:11px;grid-template-columns:auto auto;align-items:center;gap:3px 9px;padding:10px 13px;display:grid}.invite-code-note small,.invite-code-note span{color:#75837c;font-size:9px}.invite-code-note b{color:var(--green-dark);letter-spacing:.03em;grid-area:1/2/3;font:700 13px monospace}.learner-admin-list{grid-template-columns:repeat(2,1fr);display:grid}.learner-admin-list article{border-right:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:38px 1fr auto auto;align-items:center;gap:12px;padding:15px 20px;display:grid}.learner-admin-list article:nth-child(2n){border-right:0}.learner-admin-list article>span{color:#fff;background:#263b44;border-radius:50%;place-items:center;width:38px;height:38px;font-size:10px;font-weight:700;display:grid}.learner-admin-list article>div b,.learner-admin-list article>div small,.learner-admin-list article>p b,.learner-admin-list article>p small{display:block}.learner-admin-list article>div b{font:700 13px Songti SC,serif}.learner-admin-list article>div small,.learner-admin-list article>p small{color:#929c97;margin-top:4px;font-size:8px}.learner-admin-list article>p{text-align:center;min-width:50px;margin:0}.learner-admin-list article>p b{color:var(--green-dark);font-size:16px}.learner-admin-empty{color:#84908b;margin:0;padding:24px 22px;font-size:11px}@media (width<=760px){.user-system-stats{grid-template-columns:1fr}.learner-admin-panel>header{flex-direction:column;align-items:flex-start}.learner-admin-list{grid-template-columns:1fr}.learner-admin-list article,.learner-admin-list article:nth-child(2n){border-right:0}.user-account-copy,.user-signout{display:none}.user-login-link{padding:9px 11px;font-size:10px}}html,body{max-width:100%;overflow-x:hidden}@media (width<=1050px) and (width>=761px){.user-system-stats,.remote-admin-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.learner-admin-list{grid-template-columns:1fr}.learner-admin-list article,.learner-admin-list article:nth-child(2n){border-right:0}.remote-admin-body{padding-left:28px;padding-right:28px}}@media (width<=760px){body{padding-bottom:env(safe-area-inset-bottom)}button,a{touch-action:manipulation}.site-header{height:calc(64px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 14px 0}.logo{gap:8px}.logo>span{border-radius:10px 10px 14px 14px;width:34px;height:34px}.logo b{font-size:20px}.site-header nav{height:calc(64px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -8px 24px #1c302614}.site-header nav button{gap:4px;width:50%;min-height:60px;padding:5px 12px;font-size:12px}.site-header nav button:after{left:28%;right:28%}.header-stats{gap:7px}.user-account{gap:5px}.user-account-copy{display:none}.user-signout{color:#5f7068;background:#f0f3ef;border-radius:9px;min-width:42px;min-height:38px;padding:0 7px;font-size:12px;font-weight:700;display:block}.user-login-link{align-items:center;min-height:42px;padding:0 12px;font-size:12px;display:inline-flex}.learn-page,.lesson-page,.admin-page{padding-bottom:calc(74px + env(safe-area-inset-bottom))}.welcome-panel{gap:28px;padding:34px 16px 42px}.welcome-panel:before{display:none}.hello-pill{padding:7px 10px;font-size:12px}.welcome-copy h1{letter-spacing:-.035em;margin:17px 0 15px;font-size:clamp(32px,9.5vw,40px);line-height:1.2}.welcome-copy>p{margin-bottom:22px;font-size:16px;line-height:1.7}.primary-action{justify-content:center;width:100%;min-height:48px;padding:13px 16px;font-size:15px}.primary-action:hover{transform:none}.daily-card{border-radius:20px;gap:16px;width:100%;padding:20px 18px}.daily-ring{flex:0 0 84px;width:84px}.daily-ring:before{inset:9px}.daily-ring span{font-size:19px}.daily-card small,.daily-card p{font-size:12px}.daily-card b{font-size:16px}.library-section{padding:42px 14px 48px}.section-title{margin-bottom:20px}.section-title span,.learning-path>div>span,.quiz-head>div>span,.admin-heading>div>span{font-size:12px}.section-title h2,.learning-path h2,.quiz-head h2{font-size:28px}.section-title>p{font-size:13px}.category-row{scroll-snap-type:x proximity;scrollbar-width:none;gap:9px;width:calc(100% + 14px);margin-right:-14px;padding:2px 14px 12px 1px}.category-row::-webkit-scrollbar{display:none}.category-row button{scroll-snap-align:start;min-width:124px;min-height:52px}.category-row button span{font-size:14px}.category-row button small{font-size:12px}.lesson-grid{gap:16px}.lesson-card{border-radius:18px;display:block}.lesson-card:hover{box-shadow:none;transform:none}.lesson-card .cover{aspect-ratio:16/9;width:100%;height:auto;min-height:0}.lesson-card-copy{padding:18px}.lesson-tags span,.lesson-tags small{font-size:12px}.lesson-card h3{min-height:0;margin-top:10px;font-size:21px;line-height:1.38}.lesson-card-copy>p{margin-bottom:16px;font-size:14px;line-height:1.55}.card-bottom button{min-height:40px;padding:8px 11px;font-size:12px}.card-bottom em,.mini-progress small{font-size:12px}.mini-progress>span{width:min(28vw,108px);height:7px}.learning-path{border-radius:22px;gap:28px;margin:42px 14px;padding:30px 22px}.learning-path p{font-size:14px}.path-steps{flex-direction:column;align-items:stretch}.path-steps>span{text-align:left;grid-template-columns:46px 1fr;min-width:0;display:grid}.path-steps>span i{grid-row:1/3;margin:0}.path-steps b{align-self:end;margin:0 0 4px 12px;font-size:14px}.path-steps small{margin-left:12px;font-size:12px}.path-steps em{width:1px;height:18px;margin:4px 0 4px 21px}.back-button{min-height:42px;margin:10px 12px;padding:0 4px;font-size:14px}.lesson-hero{border-left:0;border-right:0;border-radius:0;width:100%;margin:0 0 38px;box-shadow:0 14px 35px #263f3312}.lesson-video{aspect-ratio:16/9;width:100%;height:auto;min-height:0}.big-play{border-width:5px;width:64px;height:64px}.lesson-intro{padding:25px 18px 28px}.lesson-intro h1{margin:13px 0 16px;font-size:29px;line-height:1.28}.lesson-intro>p{font-size:16px;line-height:1.75}.lesson-subtitle{font-size:17px!important;line-height:1.55!important}.story-timeline{border-radius:16px;margin:23px 0;padding:18px 15px 14px}.story-timeline>header{flex-direction:column;align-items:flex-start;gap:4px}.story-timeline>header span{font-size:11px}.story-timeline>header h2{font-size:20px}.story-timeline-copy time{font-size:13px}.story-timeline-copy b{font-size:16px}.story-timeline-copy p{font-size:13px;line-height:1.6}.fact-list{gap:7px;margin:20px 0}.fact-list span{padding:7px 10px 7px 7px;font-size:12px}.lesson-progress small{font-size:12px;line-height:1.5}.mark-video-button{min-height:48px;padding:11px 12px;font-size:14px}.quiz-zone{padding:0 14px calc(98px + env(safe-area-inset-bottom))}.quiz-head{align-items:flex-end;margin-bottom:18px}.quiz-head>div:last-child{flex:none}.quiz-head b{font-size:18px}.quiz-head small{font-size:11px}.quiz-card,.empty-quiz,.quiz-complete{border-radius:20px;padding:23px 16px}.quiz-card h3{margin:24px 0 18px;font-size:22px}.answer-grid{gap:10px}.answer-grid button{min-height:54px;padding:10px 12px;font-size:14px;line-height:1.45}.answer-grid button>i{flex:0 0 32px;width:32px;height:32px}.answer-feedback{gap:14px;padding:16px}.answer-feedback b{font-size:15px}.answer-feedback p,.empty-quiz p,.quiz-complete p{font-size:14px}.answer-feedback button,.empty-quiz button,.quiz-complete button{width:100%;min-height:46px;font-size:14px}.quiz-score{font-size:30px}.quiz-completed-at{margin:9px 0 2px;font-size:12px}.auth-shell,.admin-guard{min-height:100dvh;padding:calc(18px + env(safe-area-inset-top)) 12px calc(24px + env(safe-area-inset-bottom));align-items:start}.auth-card,.admin-guard>section{border-radius:20px;width:100%;padding:25px 18px}.auth-heading{margin:30px 0 21px}.auth-heading>span,.remote-admin-title>div>span,.remote-admin-toolbar>div>span,.remote-modal form>span{font-size:12px}.auth-heading h1{font-size:32px}.auth-heading p{font-size:14px}.auth-switch button{min-height:44px;font-size:14px}.auth-method-switch{gap:24px;margin-top:20px}.auth-method-switch button{min-height:40px;font-size:14px}.auth-phone-fields{grid-template-columns:1fr;gap:0}.auth-form label{margin:16px 0;font-size:14px}.auth-form input,.auth-form select,.remote-modal input,.remote-modal select,.remote-modal textarea,.form-grid input,.form-grid select,.form-grid textarea{min-height:46px;padding:12px;font-size:16px}.auth-phone-note{font-size:13px}.auth-form>button,.remote-modal form>button,.modal-submit{min-height:48px;font-size:15px}.auth-error,.auth-success,.admin-message,.auth-return{font-size:13px}.remote-admin-header{height:calc(64px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 14px 0}.remote-admin-header>a>span{width:36px;height:36px}.remote-admin-header>a div small{font-size:11px}.remote-admin-header nav button{min-height:40px;padding:8px 11px;font-size:12px}.remote-admin-body{padding:30px 12px calc(60px + env(safe-area-inset-bottom))}.remote-admin-title{margin-bottom:24px}.remote-admin-title h1{font-size:30px;line-height:1.25}.remote-admin-title p{font-size:14px;line-height:1.65}.remote-admin-title>button{width:100%;min-height:48px;font-size:15px}.user-system-stats,.remote-admin-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.remote-admin-stats article{min-width:0;padding:16px 14px}.remote-admin-stats small,.remote-admin-stats span{font-size:12px;line-height:1.4}.remote-admin-stats b{font-size:25px}.learner-admin-panel{border-radius:16px}.learner-admin-panel>header{gap:14px;padding:17px 15px}.learner-admin-panel>header>div:first-child>span{font-size:11px}.learner-admin-panel h2{font-size:22px}.invite-code-note{grid-template-columns:1fr;width:100%;padding:12px}.invite-code-note b{overflow-wrap:anywhere;grid-area:auto;font-size:14px}.invite-code-note small,.invite-code-note span{font-size:12px}.learner-admin-list article{grid-template-columns:40px minmax(0,1fr) auto auto;gap:9px;padding:14px}.learner-admin-list article>div b{font-size:14px}.learner-admin-list article>div small,.learner-admin-list article>p small{font-size:11px}.learner-admin-list article>p{min-width:42px}.remote-admin-content,.admin-category-group{border-radius:16px}.remote-admin-toolbar{padding:17px 15px}.remote-admin-toolbar h2{font-size:23px}.remote-admin-toolbar>div:last-child{grid-template-columns:1fr 1fr;width:100%;display:grid}.remote-admin-toolbar button{min-height:44px;font-size:13px}.admin-category-groups{gap:14px;padding:10px}.admin-category-heading{padding:14px}.admin-category-heading h3{font-size:19px}.admin-category-heading span,.admin-category-empty{font-size:12px}.remote-admin-list>article{grid-template-columns:78px minmax(0,1fr);align-items:start;gap:12px;padding:14px}.admin-category-group .cover.mini,.remote-admin-list .cover.mini{grid-area:1/1;width:78px;height:64px}.remote-admin-list article>div:nth-child(2){grid-area:1/2;min-width:0}.remote-admin-list article>div b{font-size:15px;line-height:1.4}.remote-admin-list article>div small,.video-connected{font-size:11px;line-height:1.4}.admin-row-actions{grid-area:2/1/auto/3;gap:8px}.remote-admin-list .admin-row-actions button,.remote-admin-list .admin-video{min-height:44px;padding:9px 8px;font-size:13px}.remote-admin-list .is-live,.remote-admin-list .is-draft{grid-area:3/1;justify-self:start;min-height:40px;padding:8px 0;font-size:13px}.remote-admin-list .admin-delete{color:#b94f49;grid-area:3/2;justify-self:end;min-height:40px;padding:8px 4px;font-size:13px;display:block}.modal-backdrop,.remote-modal{align-items:end;padding:0}.modal,.remote-modal>section{width:100%;max-height:92dvh;padding:25px 16px calc(26px + env(safe-area-inset-bottom));border-radius:22px 22px 0 0}.modal h2,.remote-modal h2{padding-right:36px;font-size:27px;line-height:1.25}.remote-modal label,.lesson-editor label,.form-grid label>span{font-size:14px}.remote-modal form>p,.quiz-lesson-name,.lesson-edit-quiz small,.lesson-edit-quiz ol{font-size:13px!important}.stream-file-drop{padding:20px 12px}.stream-file-drop b{font-size:15px}.stream-file-drop small,.stream-file-drop input,.stream-upload-state>span,.stream-upload-state>p{font-size:12px!important}.cover-photo-field>div{aspect-ratio:16/9}}@media (width<=390px){.site-header{padding-left:10px;padding-right:10px}.avatar{width:32px;height:32px}.user-signout{min-width:38px;padding:0 5px}.welcome-copy h1{font-size:31px}.daily-card{align-items:flex-start}.daily-ring{flex-basis:74px;width:74px}.card-bottom{flex-direction:column;align-items:flex-start;gap:10px}.mini-progress>span{width:150px}.quiz-head>div:last-child svg{display:none}.learner-admin-list article{grid-template-columns:38px minmax(0,1fr) auto}.learner-admin-list article>p:last-child{display:none}}@media (hover:none) and (pointer:coarse){button,a,.lesson-card,.category-row button{cursor:default}}@media (width<=760px){.story-period{gap:7px;margin:15px 0 18px;padding:7px 10px}.story-period span{font-size:10px}.story-period b{font-size:12px}}.site-header nav a{color:#758087;align-items:center;gap:8px;height:100%;padding:0 17px;font-size:13px;text-decoration:none;display:flex;position:relative}.site-header nav a:after{content:"";background:var(--green);border-radius:4px;height:3px;transition:transform .2s;position:absolute;bottom:0;left:17px;right:17px;transform:scaleX(0)}.site-header nav a.active{color:var(--green-dark);font-weight:700}.site-header nav a.active:after{transform:scaleX(1)}.user-account-link{color:inherit;align-items:center;gap:9px;text-decoration:none;display:flex}.user-account-link:hover .avatar{box-shadow:0 0 0 4px #dcebe0}.account-shell{background:#f5f6f2;min-height:100vh}.account-brand-link{color:var(--ink);text-decoration:none}.account-header-user{align-items:center;gap:12px;margin-left:auto;display:flex}.account-header-user>button{border:1px solid var(--line);color:#6d7a75;cursor:pointer;background:#fff;border-radius:9px;min-height:38px;padding:0 11px;font-size:12px}.account-page{max-width:1240px;margin:0 auto;padding:48px clamp(22px,5vw,64px) 100px}.account-overview{color:#fff;background:#263e3a;border-radius:25px;grid-template-columns:minmax(0,1fr) 260px;align-items:center;gap:38px;padding:38px 42px;display:grid;position:relative;overflow:hidden;box-shadow:0 22px 58px #1d362e29}.account-overview:after{content:"";pointer-events:none;border:55px solid #8ecfa614;border-radius:50%;width:390px;height:390px;position:absolute;bottom:-220px;right:-125px}.account-profile-copy,.account-primary-stat{z-index:1;position:relative}.account-profile-copy>span{color:#91d1a8;letter-spacing:.14em;font-size:11px;font-weight:800}.account-profile-line{align-items:center;gap:17px;margin:18px 0 14px;display:flex}.account-profile-line>i{color:#fff;background:#ffffff1a;border:1px solid #ffffff38;border-radius:50%;flex:0 0 62px;place-items:center;width:62px;height:62px;font-size:17px;font-style:normal;font-weight:800;display:grid}.account-profile-identity{width:min(520px,100%);min-width:0}.account-name-display{align-items:center;gap:16px;display:flex}.account-name-display>div{min-width:0}.account-name-display>button{color:#dce7e2;cursor:pointer;background:#ffffff14;border:1px solid #ffffff38;border-radius:999px;flex:none;padding:8px 12px;font-size:12px;font-weight:700}.account-name-display>button:hover{background:#ffffff24}.account-name-form>label{color:#bdcac5;margin-bottom:6px;font-size:12px;font-weight:700;display:block}.account-name-form>div{align-items:center;gap:8px;display:flex}.account-name-form input{color:#fff;background:#ffffff1a;border:1px solid #ffffff40;border-radius:10px;outline:none;width:min(260px,100%);min-width:0;padding:10px 12px;font-size:16px}.account-name-form input:focus{border-color:#9bd7af;box-shadow:0 0 0 3px #9bd7af1f}.account-name-form button{color:#dce7e2;cursor:pointer;background:#ffffff17;border:1px solid #fff3;border-radius:9px;min-height:39px;padding:0 12px;font-size:12px;font-weight:700}.account-name-form button[type=submit]{color:#173c2a;background:#9bd7af;border-color:#9bd7af}.account-name-form button:disabled{opacity:.65;cursor:wait}.account-profile-identity>small{margin-top:7px;font-size:12px;display:block}.account-profile-identity>small.success{color:#a6e1b8}.account-profile-identity>small.error{color:#ffc0b8}.account-profile-line h1{margin:0;font:700 clamp(30px,4vw,43px)/1.2 Songti SC,serif}.account-profile-line p{color:#bdcac5;margin:5px 0 0;font-size:13px}.account-profile-copy>small{color:#9fb1aa;font-size:12px}.account-primary-stat{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffff14;border:1px solid #ffffff24;border-radius:18px;padding:24px 25px}.account-primary-stat>small{color:#b9c8c2;font-size:12px}.account-primary-stat>div{align-items:baseline;gap:8px;margin:4px 0;display:flex}.account-primary-stat strong{color:#a6e1b8;font:700 52px/1 Georgia,serif}.account-primary-stat span{font-size:16px;font-weight:700}.account-primary-stat p{color:#aebeb8;margin:10px 0 0;font-size:12px}.account-stat-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;margin:20px 0 30px;display:grid}.account-stat-grid article{border:1px solid var(--line);background:#fff;border-radius:17px;align-items:center;gap:15px;padding:20px;display:flex}.stat-symbol{border-radius:13px;flex:0 0 46px;place-items:center;width:46px;height:46px;font-size:16px;font-weight:800;display:grid}.stat-symbol.watched{color:#328059;background:#e9f6ed}.stat-symbol.quiz{color:#6e58bd;background:#f0ecfd}.stat-symbol.active{color:#c37a27;background:#fff2df}.account-stat-grid small,.account-stat-grid b,.account-stat-grid p{display:block}.account-stat-grid small{color:#7e8b85;font-size:12px}.account-stat-grid b{color:#263a32;margin:2px 0;font-size:27px}.account-stat-grid p{color:#99a29e;margin:0;font-size:11px}.account-history{border:1px solid var(--line);background:#fff;border-radius:21px;overflow:hidden}.account-history>header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:end;gap:20px;padding:25px 28px;display:flex}.account-history>header span{color:var(--green-dark);letter-spacing:.13em;font-size:10px;font-weight:800}.account-history>header h2{margin:6px 0 0;font:700 28px/1.25 Songti SC,serif}.account-history>header p{color:#89948f;margin:0;font-size:12px}.account-history-list>article{border-bottom:1px solid var(--line);grid-template-columns:150px minmax(0,1fr) 135px 110px;align-items:center;gap:20px;padding:18px 22px;display:grid}.account-history-list>article:last-child{border-bottom:0}.account-history-list .cover.mini{border-radius:12px;width:150px;height:92px}.account-history-copy{min-width:0}.account-history-copy>span{color:#b17832;font-size:11px;font-weight:800}.account-history-copy>span.is-watched{color:#2f8656}.account-history-copy h3{text-overflow:ellipsis;white-space:nowrap;margin:6px 0 3px;font:700 18px/1.4 Songti SC,serif;overflow:hidden}.account-history-copy>p{color:#86918c;text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:12px;overflow:hidden}.account-record-progress{align-items:center;gap:8px;margin-top:12px;display:flex}.account-record-progress>span{background:#e9eeea;border-radius:10px;width:min(220px,75%);height:7px;overflow:hidden}.account-record-progress i{border-radius:inherit;background:var(--green);height:100%;display:block}.account-record-progress small{color:#3c825a;font-size:11px;font-weight:800}.account-quiz-record{border-left:1px solid var(--line);padding-left:18px}.account-quiz-record small,.account-quiz-record b,.account-quiz-record span{display:block}.account-quiz-record small{color:#8a9590;font-size:11px}.account-quiz-record b{color:#6652b0;margin:4px 0 2px;font-size:21px}.account-quiz-record span{color:#9ba39f;font-size:11px}.account-resume{color:#337650;background:#eff8f1;border:1px solid #cfe3d6;border-radius:10px;justify-content:center;align-items:center;gap:7px;min-height:42px;font-size:12px;font-weight:800;text-decoration:none;display:flex}.account-resume:hover{background:#e8f5ec;border-color:#8cbea0}.account-history-empty{text-align:center;justify-items:center;padding:70px 20px;display:grid}.account-history-empty>span{color:#4c9168;background:#edf5ef;border-radius:50%;place-items:center;width:54px;height:54px;font-size:27px;display:grid}.account-history-empty h3{margin:16px 0 5px;font:700 21px Songti SC,serif}.account-history-empty p{color:#84908a;margin:0 0 18px;font-size:13px}.account-history-empty a,.account-state-page button{background:var(--green);color:#fff;cursor:pointer;border:0;border-radius:10px;padding:11px 15px;font-size:13px;font-weight:800;text-decoration:none}.account-state-page{background:radial-gradient(circle at 20% 10%,#e4f4e8,#0000 34%),#f4f6f1;place-items:center;min-height:100vh;padding:24px;display:grid}.account-state-page>section{border:1px solid var(--line);text-align:center;background:#fff;border-radius:23px;width:min(440px,100%);padding:34px;box-shadow:0 24px 65px #1f372b1a}.account-state-page>section>a{color:var(--ink);text-decoration:none;display:inline-flex}.account-loader,.account-state-mark{color:#3c895e;background:#ecf6ee;border-radius:50%;place-items:center;width:48px;height:48px;margin:32px auto 18px;display:grid}.account-loader{background:0 0;border:3px solid #dcebe0;border-top-color:#3d9563;animation:.8s linear infinite account-spin}.account-state-page h1{margin:0;font:700 28px Songti SC,serif}.account-state-page p{color:#75827c;margin:10px 0 20px;font-size:13px;line-height:1.6}@keyframes account-spin{to{transform:rotate(360deg)}}@media (width<=900px){.account-overview{grid-template-columns:1fr 220px}.account-stat-grid{grid-template-columns:1fr}.account-history-list>article{grid-template-columns:120px minmax(0,1fr) 120px}.account-history-list .cover.mini{width:120px;height:82px}.account-resume{grid-column:2/4;justify-self:start;min-width:130px}}@media (width<=760px){.site-header nav button,.site-header nav a{flex-direction:column;justify-content:center;gap:4px;width:33.333%;min-height:60px;padding:5px 8px;font-size:12px}.site-header nav a:after{inset:0 28% auto}.user-account-link .user-account-copy,.account-site-header .logo small,.account-site-header .account-header-user>button{display:none}.account-page{padding:20px 12px calc(86px + env(safe-area-inset-bottom))}.account-overview{border-radius:20px;grid-template-columns:1fr;gap:23px;padding:26px 20px}.account-profile-line{gap:13px;margin-top:15px}.account-profile-line>i{flex-basis:52px;width:52px;height:52px}.account-profile-line h1{font-size:30px}.account-name-display{align-items:flex-start;gap:9px}.account-name-display>button{margin-top:2px;padding:7px 9px;font-size:11px}.account-name-form>div{flex-wrap:wrap}.account-name-form input{flex:1 0 100%;width:100%;min-height:44px}.account-name-form button{min-height:42px}.account-profile-line p{text-overflow:ellipsis;white-space:nowrap;max-width:240px;font-size:12px;overflow:hidden}.account-primary-stat{padding:19px}.account-primary-stat strong{font-size:45px}.account-stat-grid{gap:9px;margin:12px 0 18px}.account-stat-grid article{padding:15px}.account-stat-grid b{font-size:24px}.account-history{border-radius:17px}.account-history>header{flex-direction:column;align-items:start;gap:7px;padding:20px 16px}.account-history>header h2{font-size:25px}.account-history-list>article{grid-template-columns:92px minmax(0,1fr);gap:13px;padding:15px 13px}.account-history-list .cover.mini{grid-area:1/1;width:92px;height:82px}.account-history-copy{grid-area:1/2}.account-history-copy h3{white-space:normal;font-size:16px}.account-history-copy>p{display:none}.account-record-progress{margin-top:9px}.account-quiz-record{border-top:1px solid var(--line);border-left:0;grid-area:2/1;padding:9px 0 0}.account-quiz-record b{font-size:18px}.account-resume{grid-area:2/2;place-self:end stretch;min-width:0}}@media (prefers-reduced-motion:reduce){.account-loader{animation-duration:2s}}.experience-upgrade{--copy-size:1rem}.experience-upgrade button:disabled,.quiz-editor-expanded button:disabled{opacity:.55;cursor:not-allowed}.experience-upgrade :focus-visible,.quiz-editor-expanded :focus-visible,.learning-dashboard :focus-visible{outline-offset:3px;outline:3px solid #34875a}.experience-upgrade .site-header nav{align-items:stretch}.experience-upgrade .site-header nav a{color:#667770;align-items:center;padding:0 17px;font-size:14px;text-decoration:none;display:flex}.experience-upgrade .site-header nav button{font-size:14px}.experience-upgrade .avatar{text-decoration:none}.learning-sync{color:#466952;background:#edf5ee;justify-content:space-between;align-items:center;gap:14px;min-height:38px;padding:8px max(20px,50% - 640px);font-size:13px;line-height:1.5;display:flex}.learning-sync.has-error{color:#8b452c;background:#fff2e7}.learning-sync button{cursor:pointer;background:0 0;border:1px solid;border-radius:8px;flex-shrink:0;padding:7px 12px;font-size:14px}.discovery-intro{justify-content:space-between;align-items:center;gap:20px;max-width:1280px;margin:auto;padding:35px 0 25px;display:flex}.discovery-intro .hello-pill{font-size:13px}.discovery-intro h1{margin:14px 0 10px;font:700 clamp(28px,3vw,42px)/1.25 Songti SC,serif}.discovery-intro p{color:#75817b;margin:0;font-size:15px}.watched-chip{white-space:nowrap;color:#3f6c4e;border:1px solid #dce7dd;border-radius:999px;padding:10px 15px;font-size:14px}.story-spotlight{background:#fff;border:1px solid #e0e6de;border-radius:22px;grid-template-columns:minmax(0,1fr) minmax(0,1fr);max-width:1280px;margin:0 auto 38px;display:grid;overflow:hidden}.story-spotlight>.cover{height:100%;min-height:280px}.story-spotlight>div:not(.cover){flex-direction:column;justify-content:center;align-items:flex-start;gap:12px;padding:32px;display:flex}.story-spotlight small{color:#397c53;font-size:13px}.story-spotlight h2{margin:0;font:700 clamp(24px,2.5vw,34px)/1.35 Songti SC,serif}.story-spotlight p{color:#64766b;margin:0;font-size:16px;line-height:1.65}.story-spotlight>div>span{color:#78857d;font-size:13px}.story-spotlight button{min-height:46px;margin-top:8px;font-size:15px}.experience-upgrade .lesson-card{cursor:default}.experience-upgrade .lesson-card h3{font-size:21px}.experience-upgrade .lesson-tags span,.experience-upgrade .lesson-tags small{font-size:12px}.experience-upgrade .card-bottom{flex-wrap:wrap;align-items:flex-start;gap:10px}.experience-upgrade .card-bottom button{min-height:42px;font-size:14px}.experience-upgrade .card-bottom em{font-size:12px;line-height:1.7}.experience-upgrade .category-row button{min-height:44px;font-size:14px}.experience-upgrade .category-row button:first-child{text-align:center;display:block}.experience-upgrade .category-row button span{font-size:14px}.experience-upgrade .section-title>p{font-size:14px}.curated-path{background:#eaf2ea;border-radius:20px;max-width:1000px;margin:38px auto 65px;padding:26px}.curated-path h2{margin:0 0 8px;font:700 26px Songti SC,serif}.curated-path p{color:#64756a;font-size:15px}.curated-path ol{gap:12px;margin:22px 0 0;padding:0;list-style:none;display:grid}.curated-path li{align-items:center;gap:12px;display:flex}.curated-path li>span{color:#fff;background:#397955;border-radius:50%;flex-shrink:0;place-items:center;width:32px;height:32px;font-size:14px;display:grid}.curated-path li button{text-align:left;cursor:pointer;background:0 0;border:0;padding:8px 0;font-size:16px}.content-state{text-align:center;max-width:1000px;margin:24px auto;padding:32px 20px;font-size:16px;line-height:1.65}.content-state button,.content-state a{color:#2e734b;cursor:pointer;background:#eaf4ed;border:1px solid #cbdccf;border-radius:9px;padding:10px 16px;font-size:14px;text-decoration:none;display:inline-block}.learning-experience .lesson-hero{margin-bottom:35px}.learning-experience .lesson-description{margin-top:10px;font-size:16px;line-height:1.75}.learning-experience .story-period span{font-size:12px}.learning-experience .story-period b{font-size:13px}.lesson-stage-summary{color:#4f715b;border-top:1px solid #e2e8df;flex-direction:column;gap:9px;margin:22px 0 0;padding-top:18px;font-size:14px;display:flex}.learning-experience .mark-video-button{align-self:flex-start;min-height:42px;margin-top:14px;padding:10px 12px;font-size:13px}.player-error{z-index:15;color:#fff;background:#12231cf5;border:1px solid #718978;border-radius:12px;padding:15px;font-size:14px;line-height:1.6;position:absolute;top:14px;left:14px;right:14px}.player-error p{margin:0 0 10px}.player-error button{color:#284d38;cursor:pointer;background:#fff;border:0;border-radius:7px;margin-right:8px;padding:8px 12px}.interaction-sync-banner{z-index:35;color:#723f29;background:#fff4e7;border-radius:10px;align-items:center;gap:12px;padding:10px 12px;font-size:13px;display:flex;position:absolute;bottom:14px;left:12px;right:12px}.interaction-sync-banner button{cursor:pointer;background:#fff;border:1px solid #d7b098;border-radius:7px;flex-shrink:0;padding:8px 10px}.upgraded-quiz{padding-bottom:25px}.upgraded-quiz .quiz-head>p{color:#748177;font-size:14px}.upgraded-quiz .quiz-card,.upgraded-quiz .quiz-complete,.upgraded-quiz .empty-quiz{text-align:left}.upgraded-quiz .quiz-complete>span{margin-left:0}.upgraded-quiz .quiz-score{margin:12px 0;display:block}.upgraded-quiz .quiz-count progress{accent-color:#8870ca;flex:1;min-width:0;height:9px}.upgraded-quiz .quiz-count small{font-size:13px}.upgraded-quiz .answer-grid button{min-height:62px;font-size:16px;line-height:1.55}.upgraded-quiz .answer-feedback button,.upgraded-quiz .quiz-complete>button{flex-shrink:0;min-height:44px;font-size:14px}.upgraded-quiz .empty-quiz p,.upgraded-quiz .quiz-complete>p{font-size:16px;line-height:1.7}.quiz-review{color:#354d3d;border-top:1px solid #e1e7de;margin:22px 0;padding-top:16px}.quiz-review summary{cursor:pointer;padding:8px 0;font-size:15px;font-weight:700}.quiz-review ol{margin:16px 0;padding-left:22px}.quiz-review li{border-bottom:1px solid #e6ebe3;padding:12px 0}.quiz-review h3{margin:8px 0;font:700 17px/1.55 PingFang SC,sans-serif}.quiz-review p{margin:8px 0;font-size:15px;line-height:1.7}.quiz-review small{color:#6e7d72;font-size:12px;line-height:1.6}.answer-correct{color:#26794a}.answer-incorrect{color:#a14436}.quiz-review .review-explanation{color:#65756b}.review-filter,.account-history-filters{flex-wrap:wrap;gap:8px;margin:12px 0;display:flex}.review-filter button,.account-history-filters button{color:#536b5a;cursor:pointer;background:#fff;border:1px solid #d7e2d8;border-radius:999px;padding:9px 14px;font-size:14px}.review-filter button[aria-pressed=true],.account-history-filters button[aria-pressed=true]{color:#2d6940;background:#e3f0e5;border-color:#7fad8a}.lesson-feedback{background:#fff;border:1px solid #dce4dc;border-radius:20px;max-width:936px;margin:0 auto 80px;padding:26px}.lesson-feedback summary{cursor:pointer;font-size:17px;font-weight:700;line-height:1.5}.lesson-feedback fieldset,.quiz-edit-form fieldset{border:0;min-width:0;margin:20px 0 14px;padding:0}.lesson-feedback legend{color:#6a7b6d;margin-bottom:10px;font-size:14px}.lesson-feedback label,.quiz-edit-form label{color:#4e6456;margin:14px 0;font-size:14px;line-height:1.65;display:block}.lesson-feedback input,.lesson-feedback select,.lesson-feedback textarea,.quiz-edit-form input,.quiz-edit-form select,.quiz-edit-form textarea{font:inherit}.lesson-feedback select,.lesson-feedback textarea,.quiz-edit-form input,.quiz-edit-form select,.quiz-edit-form textarea{color:#293e30;background:#fff;border:1px solid #cad9cc;border-radius:9px;width:100%;margin-top:7px;padding:11px;font-size:16px;display:block}.feedback-ratings{flex-wrap:wrap;gap:10px;display:flex}.feedback-ratings label{cursor:pointer;border:1px solid #d8e3d8;border-radius:999px;align-items:center;gap:8px;margin:0;padding:9px 13px;display:flex}.lesson-feedback button,.editor-actions button,.quiz-row-actions button{color:#2f6b47;cursor:pointer;background:#eff6ee;border:1px solid #cbdccf;border-radius:9px;min-height:42px;padding:9px 14px;font-size:14px}.sync-alert{color:#893f2a;background:#fff0e8;border-radius:10px;margin:15px 0;padding:13px;font-size:14px;line-height:1.65}.muted-note{color:#718176;font-size:13px!important;line-height:1.65!important}.account-inline-review{grid-column:1/-1;padding:0 14px}.account-history .account-history-filters{border-bottom:1px solid #e2e7df;padding:10px 22px}.account-history-copy .account-playback-position{color:#607866;margin-top:8px;font-size:13px}.account-password-link,.auth-recovery-link{color:#30764c;margin-top:16px;font-size:14px;display:inline-block}.quiz-edit-form{background:#f4f8f2;border:1px solid #d9e4d6;border-radius:16px;margin-bottom:26px;padding:22px}.quiz-edit-form h3{margin-top:0}.editor-actions,.quiz-row-actions{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.quiz-row-actions .danger-text{color:#a34336;background:#fff}.editor-status{background:#eef4e9;border-radius:9px;padding:11px;font-size:14px}.recommendation-settings{background:#f4f8f2;border:1px solid #dce6d9;border-radius:12px;padding:14px}.recommendation-settings .recommendation-checkbox{align-items:center;gap:10px;display:flex}.recommendation-settings .recommendation-checkbox input{width:18px;height:18px;margin:0}.publish-check-panel{background:#fff;border:1px solid #dce5da;border-radius:16px;padding:19px}.publish-check-panel h3{margin:0 0 8px;font-size:17px}.publish-check-panel p,.publish-check-panel small{color:#6a7b6e;font-size:13px;line-height:1.6;display:block}.publish-check-panel>button,.publish-check-panel>a{text-align:center;color:#356e45;cursor:pointer;background:#edf5ea;border:1px solid #cfdccf;border-radius:9px;width:100%;margin:10px 0;padding:11px 9px;font-size:14px;text-decoration:none;display:block}.publish-check-panel [aria-disabled=true]{opacity:.5;cursor:not-allowed}.publish-check-panel ul{margin:12px 0 0;padding:0;list-style:none}.publish-check-panel li{border-bottom:1px solid #e4e9e1;padding:11px 0}.publish-check-panel li b,.publish-check-panel li span{font-size:13px;line-height:1.6;display:block}.check-pass b{color:#347549}.check-error b{color:#a33f31}.check-warning b{color:#996528}.preview-page-header{background:#fff;flex-wrap:wrap;justify-content:space-between;gap:14px;padding:20px;font-size:14px;display:flex}.preview-page-header a{color:#2e7550}.preview-notice{color:#70522d;background:#fff0d9;border-radius:12px;flex-wrap:wrap;align-items:center;gap:15px;max-width:1380px;margin:16px auto;padding:16px;font-size:14px;display:flex}.preview-notice button{cursor:pointer;background:#fff;border:1px solid #bdab8d;border-radius:8px;margin-left:auto;padding:9px 13px}.admin-insights-toggle{margin:20px 0}.admin-insights-toggle button{color:#2c6a43;cursor:pointer;background:#fff;border:1px solid #cadbcb;border-radius:10px;padding:12px 18px;font-size:14px}.access-health-panel{background:linear-gradient(145deg,#fbfdfb,#f3f8f3);border:1px solid #d9e4dc;border-radius:20px;margin:20px 0 28px;padding:25px}.access-health-panel>header{justify-content:space-between;align-items:flex-start;gap:20px;display:flex}.access-health-panel>header span:first-child{color:#397953;letter-spacing:.12em;font-size:12px;font-weight:800}.access-health-panel h2{margin:6px 0 8px;font:700 25px/1.3 Songti SC,serif}.access-health-panel header p,.access-health-panel .muted-note{color:#67776d;margin:0;font-size:14px;line-height:1.65}.access-health-actions{align-items:center;gap:10px;display:flex}.access-health-actions>span{white-space:nowrap;background:#fff;border-radius:999px;align-items:center;gap:7px;padding:9px 11px;display:flex;letter-spacing:0!important;font-size:13px!important}.access-health-actions>span i{background:#38935d;border-radius:50%;width:8px;height:8px}.access-health-actions>span.is-error i{background:#c34c42}.access-health-actions button{color:#326b48;cursor:pointer;background:#fff;border:1px solid #cddbcf;border-radius:9px;min-height:40px;padding:8px 12px;font-size:14px}.access-health-setup,.access-health-note{color:#805c24;background:#fff5df;border-radius:11px;margin:20px 0 0;padding:13px 15px;font-size:14px;line-height:1.6}.access-health-stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:22px 0;display:grid}.access-health-stats article{background:#fff;border:1px solid #e1e8e1;border-radius:14px;padding:17px}.access-health-stats small,.access-health-stats span{color:#748178;font-size:12px;line-height:1.5;display:block}.access-health-stats b{color:#244f35;margin:4px 0;font-size:28px;display:block}.access-health-detail{grid-template-columns:.75fr 1.25fr;gap:14px;margin-bottom:16px;display:grid}.access-health-detail>div{background:#fff;border:1px solid #e1e8e1;border-radius:14px;padding:17px}.access-health-detail h3{margin:0 0 12px;font-size:16px}.access-health-detail ul{margin:0;padding:0;list-style:none}.access-health-detail li{border-top:1px solid #edf0ec;grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;padding:9px 0;font-size:13px;display:grid}.access-health-detail li:first-child{border-top:0}.access-health-detail li b{color:#315f43;font-size:12px}.access-health-detail li small{color:#8b948e;grid-column:1/-1;font-size:11px}.access-health-detail>div>p{color:#748178;font-size:13px}.learning-dashboard{background:#fff;border:1px solid #dce5da;border-radius:20px;margin:20px 0 28px;padding:25px}.learning-dashboard>header,.feedback-inbox article>header{justify-content:space-between;align-items:center;gap:15px;display:flex}.learning-dashboard h2{margin:0 0 10px;font-size:24px}.learning-dashboard p{font-size:14px;line-height:1.7}.learning-dashboard button{color:#3a6b49;cursor:pointer;background:#f5f8f3;border:1px solid #cddbcf;border-radius:8px;padding:9px 12px;font-size:14px}.dashboard-summary{flex-wrap:wrap;gap:14px;margin:22px 0;display:flex}.dashboard-summary>span{color:#617364;background:#f1f6ee;border-radius:12px;padding:14px 18px;font-size:14px}.dashboard-summary b{color:#2f6341;margin-left:8px;font-size:22px}.table-scroll{border:1px solid #e0e7dd;border-radius:12px;width:100%;overflow-x:auto}.table-scroll table{border-collapse:collapse;text-align:left;width:100%;min-width:640px;font-size:14px}.table-scroll th,.table-scroll td{border-bottom:1px solid #e5eae2;padding:13px}.table-scroll thead{background:#f1f5ed}.table-scroll tbody th{min-width:180px;max-width:300px;font-weight:500}.choice-metrics{border-top:1px solid #e0e7da;margin-top:20px;padding-top:18px}.choice-metrics summary{cursor:pointer;font-size:16px;font-weight:700}.choice-metrics article{border-bottom:1px solid #e4eade;padding:16px 0}.choice-metrics h3{font-size:16px}.choice-metrics small{color:#697c6c;font-size:13px}.choice-metrics ul{padding:0;list-style:none}.choice-metrics li{justify-content:space-between;gap:20px;padding:8px 0;font-size:14px;display:flex}.choice-metrics li b{white-space:nowrap}.feedback-inbox{border-top:1px solid #e0e7da;margin-top:26px;padding-top:10px}.feedback-inbox article{border-top:1px solid #e2e7df;padding:17px 0}.feedback-inbox article small{color:#6b7f6f;margin-top:6px;font-size:12px;display:block}.feedback-inbox article p{white-space:pre-wrap;overflow-wrap:anywhere}.feedback-inbox article button{flex-shrink:0}.recovery-card .auth-heading h1{font-size:30px}.recovery-card .auth-heading p,.recovery-card>p{font-size:15px;line-height:1.7}.recovery-card .auth-form label{font-size:14px}.recovery-card input{font-size:16px}.recovery-card .auth-return{font-size:14px}@media (width<=1350px){.discovery-intro,.story-spotlight{margin-left:24px;margin-right:24px}}@media (width<=760px){.experience-upgrade .site-header nav button,.experience-upgrade .site-header nav a{flex:1;justify-content:center;align-items:center;width:auto;min-height:60px;padding:8px 4px;font-size:13px;display:flex}.learning-sync{align-items:flex-start;padding:8px 14px;font-size:12px}.discovery-intro{margin:0;padding:24px 16px 20px;display:block}.discovery-intro h1{margin:13px 0 10px;font-size:28px}.watched-chip{margin-top:14px;padding:7px 11px;font-size:13px;display:inline-block}.story-spotlight{border-radius:18px;flex-direction:column;margin:0 14px 26px;display:flex}.story-spotlight>.cover{aspect-ratio:16/9;width:100%;height:auto;min-height:0}.story-spotlight>div:not(.cover){gap:10px;padding:20px}.story-spotlight h2{font-size:25px}.story-spotlight .primary-action{justify-content:center;width:100%}.experience-upgrade .library-section{padding:26px 14px 32px}.experience-upgrade .section-title h2{font-size:26px}.experience-upgrade .category-row{margin-bottom:20px}.curated-path{margin:24px 14px 50px;padding:20px}.lesson-stage-summary{font-size:14px}.upgraded-quiz{padding-bottom:20px}.quiz-review .review-filter button{font-size:13px}.lesson-feedback{margin:0 14px calc(96px + env(safe-area-inset-bottom));padding:20px 16px}.feedback-ratings{gap:7px}.feedback-ratings label{padding:8px 10px;font-size:13px}.account-history .account-history-filters{padding:12px}.account-inline-review{padding:0}.preview-notice{margin:12px;padding:14px}.preview-notice button{margin-left:0}.admin-student-preview{padding-bottom:20px}.access-health-panel{padding:18px 14px}.access-health-panel>header{flex-direction:column}.access-health-actions{flex-wrap:wrap;width:100%}.access-health-actions button{margin-left:auto}.access-health-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.access-health-detail{grid-template-columns:1fr}.learning-dashboard{padding:18px 14px}.learning-dashboard>header,.feedback-inbox article>header{flex-direction:column;align-items:flex-start}.dashboard-summary{gap:9px}.dashboard-summary>span{flex:100%;padding:11px 13px}.quiz-edit-form{padding:16px}.player-error{padding:10px;font-size:13px;top:8px;left:8px;right:8px}.interaction-sync-banner{flex-wrap:wrap;max-height:130px;overflow:auto}}.upgraded-quiz .answer-grid button:disabled{opacity:1}.next-stories{max-width:936px;margin:0 auto 90px;padding:0 16px}.next-stories h2{font-size:24px;line-height:1.4}.next-stories>div{grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr));gap:16px;display:grid}.next-stories button{text-align:left;color:#31563c;cursor:pointer;background:#f0f6ec;border:1px solid #d5e3d4;border-radius:16px;flex-direction:column;align-items:flex-start;gap:12px;padding:22px;display:flex}.next-stories button b{font-size:19px;line-height:1.6}.next-stories button span,.next-stories button small{font-size:13px}:root{--ink:#19372e;--muted:#63736c;--line:#dfe7e1;--paper:#f5f7f4;--white:#fff;--green:#26704e;--green-dark:#1b553c;--ui-font:"PingFang SC", "Microsoft YaHei", system-ui, sans-serif;--story-font:"Songti SC", "STSong", "SimSun", Georgia, serif;--surface-soft:#edf3ee;--radius-card:20px;--radius-control:12px;--shadow-card:0 6px 24px #19372e0d;--focus-ring:#a56920}body{font-family:var(--ui-font);font-size:1rem;line-height:1.6}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button,input,select,textarea{font-family:var(--ui-font)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--focus-ring);outline-offset:4px}button:disabled{cursor:not-allowed}.learner-header.site-header{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffffff7;gap:32px;height:80px;padding:0 max(24px,50% - 620px)}.learner-header .brand-button{color:var(--ink);flex-shrink:0;text-decoration:none}.learner-header .logo{gap:10px;min-width:174px}.learner-header .logo b{font-family:var(--story-font);font-size:1.6rem}.learner-header .logo small{letter-spacing:.07em;color:#6b7d70;width:auto;font-size:.625rem;line-height:1.35}.learner-header.site-header nav{align-items:center;gap:4px}.learner-header.site-header nav a{height:44px;color:var(--muted);white-space:nowrap;border-radius:10px;gap:8px;padding:0 16px;font-size:.9375rem}.learner-header.site-header nav a:after{display:none}.learner-header.site-header nav a.active{background:var(--surface-soft);color:var(--green-dark);font-weight:700}.learner-header nav svg{flex-shrink:0;width:19px;height:19px}.learner-header .learner-header-user{gap:16px;margin-left:auto}.learner-header .avatar{width:40px;height:40px;box-shadow:none;color:var(--green-dark);font:700 .875rem/1 var(--ui-font);background:#e5eee6;border-radius:14px}.learner-header .user-signout{min-height:44px;color:var(--muted);font-size:.875rem}.learner-header .user-login-link{border:1px solid var(--line);color:var(--green-dark);background:#fff;border-radius:12px;padding:10px 16px;font-size:.875rem}.experience-upgrade .primary-action{border-radius:var(--radius-control);background:var(--green);min-height:48px;padding:12px 22px;font-size:.9375rem;box-shadow:0 2px #164b35}.experience-upgrade .primary-action:hover{background:var(--green-dark);transform:none;box-shadow:0 2px #123e2b}.experience-upgrade :is(h1,h2,h3),.account-shell h2{overflow-wrap:anywhere}.experience-upgrade .learning-sync{border:1px solid var(--line);background:var(--surface-soft);border-radius:10px;max-width:1240px;min-height:0;margin:10px auto 0;padding:9px 14px;font-size:.875rem}.experience-upgrade .learning-sync.has-error{color:#824323;background:#fff5eb;border-color:#e9c8a9}.experience-upgrade .learning-sync button{min-height:44px}.experience-upgrade .learning-sync>svg{flex-shrink:0;width:17px;height:17px}.experience-upgrade .learning-sync>span{flex:1}.experience-upgrade .learning-sync.is-synced{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.experience-upgrade .discovery-intro{gap:24px;max-width:1240px;padding:32px 0 24px}.experience-upgrade .hello-pill{color:var(--muted);letter-spacing:0;background:0 0;border-radius:0;padding:0;font-size:.875rem;font-weight:400}.experience-upgrade .discovery-intro h1{font:700 clamp(1.6rem,2.5vw,2.2rem)/1.4 var(--story-font);letter-spacing:.01em;margin:6px 0 0}.experience-upgrade .watched-chip{color:var(--muted);background:0 0;border:0;align-items:center;gap:6px;padding:10px 0;font-size:.875rem;display:inline-flex}.watched-chip svg{width:17px;color:var(--green)}.watched-chip b{color:var(--green-dark);font-size:1.0625rem}.experience-upgrade .story-spotlight{isolation:isolate;max-width:1240px;box-shadow:var(--shadow-card);background:#1e3e32;border:0;border-radius:24px;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);margin:0 auto 38px;position:relative}.story-cover.cover{aspect-ratio:16/9;isolation:isolate;height:auto;min-height:0}.story-cover.cover:after{pointer-events:none;background:linear-gradient(#0000 65%,#00000021)}.story-cover .cover-photo{object-fit:cover;object-position:center;width:100%;height:100%;display:block;position:absolute;inset:0}.story-cover .cover-period{z-index:5;color:#fff;-webkit-backdrop-filter:blur(4px);letter-spacing:.04em;white-space:nowrap;text-shadow:0 1px 2px #000000b3;background:#11231dad;border:1px solid #ffffff3d;border-radius:8px;align-items:center;min-height:28px;padding:4px 9px;font:700 .8125rem/1.4 Georgia,Songti SC,serif;display:inline-flex;bottom:12px;right:14px}.story-cover .cover-episode{font:500 .75rem/1.5 var(--ui-font);letter-spacing:.02em;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#101f199e;border:1px solid #ffffff3d;border-radius:8px;padding:4px 9px;top:14px;left:14px}.story-cover.cover-placeholder{background:#e6ece5}.story-cover.cover-placeholder:after{display:none}.cover-placeholder-content{color:#5c7b62;background:#e6eee5;flex-direction:column;justify-content:center;align-items:center;gap:12px;display:flex;position:absolute;inset:0}.cover-placeholder-content>svg{stroke-width:1.2px;width:40px;height:40px}.cover-placeholder-content>span{letter-spacing:.08em;font-size:.875rem}.experience-upgrade .story-spotlight>.story-cover{z-index:1;height:100%;min-height:0;position:relative;overflow:hidden}.experience-upgrade .story-spotlight .spotlight-copy{z-index:2;color:#fff;background:#1e3e32;gap:16px;min-width:0;padding:clamp(26px,3vw,42px);position:relative}.spotlight-copy .spotlight-kicker{color:#d4e4d5;letter-spacing:.06em;align-items:center;gap:9px;font-size:.8125rem;display:flex}.spotlight-kicker>span{background:#d8b772;border-radius:1px;width:3px;height:13px}.experience-upgrade .story-spotlight h2{color:#fff;font:700 clamp(1.65rem,2.5vw,2.3rem)/1.5 var(--story-font);text-wrap:pretty}.experience-upgrade .story-spotlight p{color:#c2d4c7;font-size:1rem;line-height:1.7}.story-metadata{color:#c2d4c7;flex-wrap:wrap;gap:8px 15px;font-size:.8125rem;display:flex}.story-metadata>span{align-items:center;gap:5px;display:inline-flex}.story-metadata svg{width:16px;height:16px}.experience-upgrade .story-spotlight .primary-action{color:#203c2d;min-width:180px;box-shadow:none;background:#e1efce;margin-top:4px;font-weight:700}.spotlight-copy .primary-action>svg{width:18px;height:18px}.spotlight-copy .primary-action>svg:last-child{margin-left:auto}.experience-upgrade .library-section{background:0 0;border:0;padding:0 24px 36px}.experience-upgrade .section-title{max-width:1240px;margin-bottom:20px}.experience-upgrade .section-title>div>span{display:none}.experience-upgrade .section-title h2{font:700 1.625rem/1.4 var(--story-font);margin:0}.experience-upgrade .section-title>p{color:var(--muted);margin:0;font-size:.875rem}.experience-upgrade .category-row{scrollbar-width:thin;gap:8px;max-width:1240px;margin-bottom:20px;padding:2px 0 8px}.experience-upgrade .category-row button{min-width:auto;min-height:44px;box-shadow:none;white-space:nowrap;background:#fff;border:1px solid #dce5dd;border-radius:100px;align-items:center;gap:8px;padding:9px 14px;display:flex}.experience-upgrade .category-row button:first-child{display:flex}.experience-upgrade .category-row button.active{color:#fff;background:var(--green);border-color:var(--green);box-shadow:none}.experience-upgrade .category-row button i{width:auto;height:auto;color:inherit;background:0 0}.experience-upgrade .category-row button i svg{width:17px;height:17px;display:block}.experience-upgrade .category-row button span{font-size:.875rem;font-weight:500}.experience-upgrade .lesson-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;max-width:1240px}.experience-upgrade .lesson-card{border-radius:var(--radius-card);min-width:0;box-shadow:none;border:1px solid #e0e7e0;transition:border-color .18s,box-shadow .18s}.experience-upgrade .lesson-card:hover{box-shadow:var(--shadow-card);border-color:#adbfaf;transform:none}.experience-upgrade .lesson-tags{flex-wrap:wrap;gap:9px}.experience-upgrade .lesson-tags>span{letter-spacing:0;color:var(--green-dark);font-size:.8125rem;font-weight:600}.experience-upgrade .lesson-tags small{color:var(--muted);align-items:center;gap:4px;font-size:.8125rem;display:inline-flex}.lesson-tags small svg{width:14px;height:14px}.experience-upgrade .lesson-card h3{font:700 1.25rem/1.6 var(--story-font);min-height:0;margin:10px 0 5px}.experience-upgrade .lesson-card-copy>p{color:var(--muted);margin:0 0 18px;font-size:.875rem;line-height:1.65}.experience-upgrade .card-bottom{border-top:1px solid #edf1ec;align-items:center;gap:8px;padding-top:12px}.experience-upgrade .card-bottom button{min-height:44px;color:var(--green-dark);background:0 0;border:0;border-radius:6px;gap:7px;padding:8px 0;font-size:.875rem}.card-bottom button svg{width:17px;height:17px}.experience-upgrade .card-bottom em,.story-status{color:#617166;background:#f0f3ef;border-radius:6px;padding:3px 7px;font-size:.75rem;font-style:normal;line-height:1.6}.experience-upgrade .card-bottom .status-new{background:0 0;padding:3px 0}.experience-upgrade .card-bottom .status-watching,.story-status.status-watching,.experience-upgrade .card-bottom .status-quiz_pending,.story-status.status-quiz_pending{color:#82561f;background:#fbf2df}.experience-upgrade .card-bottom .status-complete,.story-status.status-complete{color:#286644;background:#eaf3e9}.experience-upgrade .curated-path{border:1px solid var(--line);background:#edf2eb;border-radius:16px;max-width:1240px;margin:8px auto 60px;padding:22px 24px}.curated-path summary{cursor:pointer;align-items:center;gap:12px;min-height:44px;font-size:1rem;font-weight:600;list-style:none;display:flex}.curated-path summary::-webkit-details-marker{display:none}.curated-path summary>span:first-of-type{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.curated-path summary small{color:var(--muted);font-size:.8125rem;font-weight:400}.path-expand{margin-left:auto;font-size:1.25rem;font-weight:400;transition:transform .18s}.curated-path details[open] .path-expand{transform:rotate(45deg)}.curated-path li>span{width:30px;height:30px;color:var(--green-dark);background:#dce8da}.curated-path li>span svg{width:17px;height:17px}.curated-path li button{min-height:44px;font-size:.9375rem;line-height:1.65}.experience-upgrade.screen-learning .library-section{padding-top:36px}.experience-upgrade .content-state{border:1px solid var(--line);background:#fff;border-radius:18px;margin:24px auto;padding:36px 24px}.content-state :is(button,a){min-height:44px}.account-shell .account-page{max-width:1120px;margin:0 auto;padding:32px 24px 90px}.account-shell .account-overview{box-shadow:none;background:#1e3e32;border-radius:20px;padding:28px 32px;display:block}.account-shell .account-overview:after{display:none}.account-shell .account-profile-copy>span{color:#c6d8ca;font:500 .8125rem/1.5 var(--ui-font);letter-spacing:.04em}.account-shell .account-profile-line{gap:16px;margin:16px 0 0}.account-shell .account-profile-line>i{color:#254a31;width:62px;height:62px;font-family:var(--ui-font);background:#dceccd;border-radius:18px;font-size:1.35rem}.account-shell .account-name-display{gap:20px}.account-shell .account-name-display h1{color:#fff;font:700 1.75rem/1.4 var(--ui-font);overflow-wrap:anywhere;margin:0}.account-shell .account-name-display p{color:#c7d7cd;overflow-wrap:anywhere;font-size:.875rem}.account-shell .account-name-display>button{background:#ffffff14;border-color:#607a6a;border-radius:10px;min-height:44px;padding:8px 14px;font-size:.875rem}.account-profile-meta{color:#c5d3c8;flex-wrap:wrap;align-items:center;gap:12px 18px;margin:14px 0 0 78px;display:flex}.account-profile-meta small{font-size:.8125rem}.account-shell .account-profile-meta a,.account-profile-meta button{color:#d7e5d9;cursor:pointer;background:0 0;border:0;min-height:44px;margin:0;padding:10px 0;font-size:.8125rem;text-decoration:none}.account-profile-meta :is(a,button):hover{text-decoration:underline}.account-shell .account-stat-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:18px 0 30px}.account-shell .account-stat-grid article{border:1px solid var(--line);border-radius:16px;gap:16px;min-width:0;padding:20px 24px}.account-shell .stat-symbol{background:var(--surface-soft);width:40px;height:40px;color:var(--green);border-radius:12px;flex-shrink:0}.account-shell .account-stat-grid small{color:#53685c;font-size:.875rem}.account-shell .account-stat-grid b{font:600 2rem/1.4 var(--ui-font);color:var(--ink);font-variant-numeric:tabular-nums;overflow-wrap:anywhere;margin:2px 0}.account-shell .account-stat-grid p{color:var(--muted);font-size:.75rem}.account-shell .account-history{box-shadow:none;border-color:var(--line);border-radius:20px}.account-shell .account-history>header{border-bottom:0;align-items:center;gap:16px;padding:24px}.account-shell .account-history h2{font:700 1.5rem/1.4 var(--story-font);margin:0}.account-shell .account-history>header p{color:var(--muted);font-size:.875rem}.account-shell .account-history-filters{border-bottom:1px solid var(--line);gap:8px;margin:0;padding:0 24px 20px}.account-history-filters button,.review-filter button{border:1px solid var(--line);background:#fff;border-radius:9px;min-height:44px;padding:8px 14px;font-size:.875rem}.account-history-filters button[aria-pressed=true],.review-filter button[aria-pressed=true]{background:var(--surface-soft);color:var(--green-dark);border-color:#a8c0aa}.account-shell .account-history-list>article{grid-template-columns:150px minmax(0,1fr) 110px 110px;gap:20px;padding:22px 24px}.account-shell .account-history-list .cover.mini{aspect-ratio:16/9;border-radius:10px;width:100%;height:auto}.story-cover.mini .cover-episode{display:none}.story-cover.mini .cover-placeholder-content{gap:0}.story-cover.mini .cover-placeholder-content>svg{width:28px;height:28px}.story-cover.mini .cover-placeholder-content>span{display:none}.account-shell .account-history-copy>span{padding:3px 7px;font-size:.75rem;font-weight:500;display:inline-flex}.account-shell .account-history-copy h3{white-space:normal;font:700 1.0625rem/1.6 var(--story-font);margin:7px 0 4px}.account-shell .account-history-copy>p{color:var(--muted);font-size:.8125rem}.account-shell .account-quiz-record small,.account-shell .account-quiz-record span{color:var(--muted);font-size:.75rem}.account-shell .account-quiz-record b{color:var(--green-dark);font-size:1.125rem}.account-shell .account-resume{background:var(--surface-soft);min-height:44px;color:var(--green-dark);border-radius:10px;padding:8px 12px;font-size:.875rem}.account-shell .account-inline-review{padding:0}.account-inline-review .quiz-review{border-color:#edf1ec;margin:0;padding-top:10px}.account-shell .account-name-form{width:100%}.account-shell .account-name-form input{min-height:44px;font-size:1rem}.account-shell .account-name-form button{min-height:44px;font-size:.875rem}.experience-upgrade .back-button{width:calc(100% - 48px);max-width:1080px;min-height:44px;margin:18px auto 10px;font-size:.875rem}.learning-experience .lesson-hero{max-width:1080px;box-shadow:none;background:0 0;border:0;border-radius:0;margin:0 auto 38px;display:block;overflow:visible}.lesson-heading{padding:8px 0 22px}.lesson-heading h1{font:700 clamp(1.65rem,3vw,2.25rem)/1.5 var(--story-font);color:var(--ink);overflow-wrap:anywhere;margin:10px 0 12px}.lesson-caption-row{flex-wrap:wrap;align-items:center;gap:10px 20px;display:flex}.lesson-heading .lesson-subtitle{font:400 1rem/1.7 var(--ui-font);color:var(--muted);margin:0}.lesson-heading .story-period{background:#eef3ec;border:1px solid #dce5db;border-radius:7px;align-items:center;gap:6px;margin:0;padding:5px 9px;display:inline-flex}.lesson-heading .story-period svg{width:14px;height:14px;color:var(--green)}.lesson-heading .story-period span,.lesson-heading .story-period b{font:400 .75rem/1.5 var(--ui-font);color:#617265}.lesson-heading .story-period b{color:#36533e;font-weight:600}.learning-experience .lesson-video{aspect-ratio:16/9;background:#101b16;border-radius:20px;width:100%;height:auto;min-height:0;overflow:visible}.learning-experience .lesson-video>video,.learning-experience .lesson-video>.decision-video-experience,.decision-video-experience>iframe{border-radius:inherit}.learning-experience .lesson-intro{padding:22px 0 0;display:block}.learning-experience .lesson-description{max-width:78ch;font:400 1rem/1.8 var(--ui-font);color:var(--muted);margin:0}.learning-experience .lesson-stage-summary{border-top:1px solid var(--line);border-bottom:1px solid var(--line);flex-flow:wrap;align-items:center;gap:12px 24px;margin:20px 0 0;padding:16px 0}.lesson-stage-summary>span{color:var(--muted);align-items:center;gap:8px;font-size:.875rem;display:inline-flex}.lesson-stage-summary>span.is-complete{color:var(--green-dark)}.lesson-stage-summary>span>svg{width:18px;height:18px}.learning-experience .mark-video-button{color:#eef3f1;background:#ffffff14;border:1px solid #e1ebe857;border-radius:10px;min-height:44px;margin:0 0 0 auto;padding:9px 14px;font-size:.875rem;font-weight:700;box-shadow:inset 0 1px #ffffff0f}.learning-experience .mark-video-button:hover{background:#ffffff21;border-color:#e1ebe88a}.learning-experience .upgraded-quiz{max-width:860px;padding:0 0 24px;scroll-margin-top:110px}.upgraded-quiz .quiz-head{align-items:center;gap:20px;margin-bottom:20px}.upgraded-quiz .quiz-head>div>span{letter-spacing:.04em;color:var(--green);font-size:.8125rem}.upgraded-quiz .quiz-head h2{font:700 1.5rem/1.5 var(--story-font);margin:5px 0 0}.upgraded-quiz .quiz-head>p{font-size:.875rem}.upgraded-quiz :is(.quiz-card,.empty-quiz,.quiz-complete){border:1px solid var(--line);box-shadow:none;color:var(--muted);border-radius:20px;padding:30px}.upgraded-quiz .quiz-card h3{font:700 1.375rem/1.65 var(--ui-font);color:var(--ink);margin:24px 0 22px}.upgraded-quiz .quiz-count progress{accent-color:var(--green);border-radius:99px;height:7px;overflow:hidden}.upgraded-quiz progress::-webkit-progress-bar{background:#e8eee6;border-radius:99px}.upgraded-quiz progress::-webkit-progress-value{background:var(--green);border-radius:99px}.upgraded-quiz progress::-moz-progress-bar{background:var(--green);border-radius:99px}.upgraded-quiz .answer-grid{gap:12px}.upgraded-quiz .answer-grid button{min-height:66px;color:var(--ink);border-color:#d9e2d9;border-radius:12px;padding:14px 16px;font-size:1rem;line-height:1.65}.upgraded-quiz .answer-grid button>i{color:#486a51;background:#eff4ed;border-radius:50%;flex-shrink:0;width:30px;height:30px;font-size:.875rem}.upgraded-quiz .answer-grid button.correct{color:#215c3b;background:#edf6e9;border-color:#599069}.upgraded-quiz .answer-grid button.wrong{color:#8f3e35;background:#fff3ee;border-color:#c68072}.upgraded-quiz .answer-grid button.correct>i{color:#fff;background:#2c704b}.upgraded-quiz .answer-grid button.wrong>i{color:#fff;background:#a75a48}.upgraded-quiz .answer-feedback{border-radius:12px;padding:18px}.upgraded-quiz .answer-feedback b{font-size:1rem}.upgraded-quiz .answer-feedback p{font-size:.9375rem;line-height:1.8}.upgraded-quiz .answer-feedback button,.upgraded-quiz .quiz-complete>button{border-radius:10px;min-height:46px;padding:10px 16px;font-size:.875rem}.upgraded-quiz .quiz-complete>span{border-radius:12px;width:42px;height:42px;font-size:1.375rem}.upgraded-quiz .quiz-complete h3{font:600 1.25rem/1.5 var(--ui-font);margin:18px 0 6px}.upgraded-quiz .quiz-score{font:600 2.5rem/1.4 var(--ui-font);color:var(--green-dark);margin:4px 0 8px}.quiz-review summary{min-height:44px;font-size:.9375rem}.quiz-review h3{font:600 1rem/1.65 var(--ui-font)}.quiz-review p{font-size:1rem;line-height:1.8}.learning-experience .lesson-feedback{border-radius:16px;max-width:860px;margin:0 auto 32px;padding:20px 24px}.lesson-feedback summary{min-height:44px;padding:9px 0;font-size:1rem;line-height:1.65}.lesson-feedback textarea{min-height:120px}.lesson-feedback :is(button,select){min-height:46px}.experience-upgrade .next-stories{max-width:860px;margin:20px auto 90px;padding:0}.next-stories h2{font:700 1.375rem/1.5 var(--story-font);margin-bottom:16px}.next-stories button{background:#eaf1e6;border-color:#d6e1d2;border-radius:16px;padding:22px;transition:border-color .18s}.next-stories button:hover{border-color:#9caf97}.next-stories button b{font:700 1.125rem/1.7 var(--story-font)}.decision-card{background:#fbfcf8;border-color:#e9eee4;border-radius:20px;padding:26px}.decision-kicker{letter-spacing:.03em;font-size:.8125rem}.decision-kicker small{font-size:.8125rem}.decision-kicker span i{width:4px;height:13px;box-shadow:none;background:#a2854e;border-radius:1px}.decision-time{font-size:.8125rem;line-height:1.7}.decision-card h2{font-family:var(--story-font);line-height:1.55}.decision-choices button{min-height:56px;box-shadow:none;border-radius:12px;padding:12px 14px}.decision-choices span{overflow-wrap:anywhere;font-size:1rem;line-height:1.65}.decision-choices button:hover:not(:disabled),.decision-choices button:focus-visible:not(:disabled){box-shadow:none}.decision-choices button:focus-visible:not(:disabled){outline:3px solid var(--focus-ring);outline-offset:3px}.decision-choices button.is-selected{box-shadow:0 0 0 2px #b8d2b7}.decision-replay-note{font-size:.8125rem}.decision-text-feedback p{font-size:1rem;line-height:1.8}.decision-text-feedback button{border-radius:10px;min-height:46px;font-size:.875rem}.decision-overlay:focus{outline:none}.decision-inline-sync{color:#86522d;background:#fff0df;border-radius:9px;align-items:center;gap:10px;margin-top:14px;padding:10px 12px;font-size:.875rem;line-height:1.6;display:flex}.decision-inline-sync button{color:#754b2a;background:#fff;border:1px solid #d4b38e;border-radius:8px;flex-shrink:0;min-height:44px;padding:7px 10px}.branch-video-stage .decision-inline-sync{z-index:25;position:absolute;bottom:66px;left:12px;right:12px}.interactive-fullscreen-button{width:44px;height:44px}.interaction-replay-bar{border-radius:12px;flex-wrap:wrap;max-width:calc(100% - 28px)}.interaction-replay-bar span{font-size:.75rem}.interaction-replay-bar button{min-height:36px;font-size:.8125rem}.branch-video-toolbar button{min-height:44px;font-size:.875rem}@media (width>=761px) and (width<=1130px){.learning-experience .lesson-hero{margin-left:24px;margin-right:24px}.learning-experience .upgraded-quiz,.learning-experience .lesson-feedback,.experience-upgrade .next-stories{margin-left:max(24px,50% - 430px);margin-right:max(24px,50% - 430px)}}@media (width<=1290px){.experience-upgrade .discovery-intro,.experience-upgrade .story-spotlight,.experience-upgrade .curated-path{margin-left:24px;margin-right:24px}}@media (width>=761px) and (width<=1040px){.learner-header.site-header{gap:18px;padding:0 24px}.learner-header .logo{min-width:120px}.learner-header .logo small{display:none}.learner-header.site-header nav a{padding:0 12px}.experience-upgrade .lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.experience-upgrade .story-spotlight{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.account-shell .account-stat-grid article{gap:10px;padding:18px}.account-shell .account-history-list>article{grid-template-columns:110px minmax(0,1fr) 100px}.account-shell .account-history-list .account-resume{grid-column:2/-1;justify-self:start}}@media (width<=760px){.learner-header.site-header{height:calc(64px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 18px 0;-webkit-backdrop-filter:none;gap:12px}.learner-header .logo{gap:9px;min-width:0}.learner-header .logo>span{width:34px;height:34px}.learner-header .logo b{font-size:1.4rem}.learner-header .logo small{display:none}.learner-header .learner-header-user{gap:8px}.learner-header .user-signout{display:none}.learner-header .avatar{border-radius:12px;width:38px;height:38px}.learner-header.site-header nav{height:calc(68px + env(safe-area-inset-bottom));padding:6px 10px calc(6px + env(safe-area-inset-bottom));border-top:1px solid var(--line);z-index:80;background:#fffffffa;display:flex;position:fixed;inset:auto 0 0;box-shadow:0 -3px 16px #19372e0a}.learner-header.site-header nav a{border-radius:12px;flex-direction:column;flex:1;justify-content:center;gap:2px;width:auto;height:56px;min-height:56px;padding:5px 4px;font-size:.8125rem;display:flex}.learner-header nav svg{width:21px;height:21px}.experience-upgrade .learning-sync{margin:10px 14px 0}.experience-upgrade .discovery-intro{margin:0 18px;padding:22px 0 18px;display:block}.experience-upgrade .discovery-intro h1{font-size:1.5rem;line-height:1.5}.experience-upgrade .hello-pill{font-size:.8125rem}.experience-upgrade .watched-chip{display:none}.experience-upgrade .story-spotlight{border-radius:18px;grid-template-rows:auto auto;grid-template-columns:minmax(0,1fr);margin:0 14px 30px;display:grid}.experience-upgrade .story-spotlight>.story-cover{aspect-ratio:16/9;grid-area:1/1;width:100%;height:auto;min-height:0}.story-cover .cover-episode{font-size:.75rem;top:12px;left:12px}.experience-upgrade .story-spotlight .spotlight-copy{grid-area:2/1;gap:12px;width:100%;min-height:0;padding:20px}.experience-upgrade .story-spotlight h2{font-size:1.625rem;line-height:1.45}.experience-upgrade .story-spotlight .spotlight-copy>p{display:none}.experience-upgrade .story-spotlight .primary-action{justify-content:flex-start;width:100%;min-height:48px;margin-top:2px}.experience-upgrade .library-section{padding:0 14px 30px}.experience-upgrade .section-title{text-align:left;flex-direction:row;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:16px}.experience-upgrade .section-title h2{font-size:1.375rem}.experience-upgrade .section-title>p{text-align:right;max-width:98px;font-size:.75rem}.experience-upgrade .category-row{scroll-snap-type:none;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;width:100%;margin:0 0 16px;padding:0;display:grid;overflow:visible}.experience-upgrade .category-row button{flex-shrink:1;justify-content:flex-start;width:100%;min-width:0;padding:8px 11px}.experience-upgrade .category-row button:first-child{grid-column:1/-1;justify-content:center}.experience-upgrade .category-row button small{margin-left:auto}.experience-upgrade .lesson-grid{grid-template-columns:minmax(0,1fr);gap:20px}.experience-upgrade .lesson-card{border-radius:16px}.experience-upgrade .lesson-card-copy{padding:18px}.experience-upgrade .lesson-card h3{font-size:1.25rem;line-height:1.5}.experience-upgrade .curated-path{margin:0 14px calc(100px + env(safe-area-inset-bottom));padding:16px 18px}.experience-upgrade .curated-path summary{font-size:.9375rem}.experience-upgrade.screen-learning .library-section{padding-top:24px}.experience-upgrade .content-state{margin:18px 14px;padding:28px 18px}.account-shell .account-page{padding:20px 14px calc(100px + env(safe-area-inset-bottom))}.account-shell .account-overview{border-radius:18px;padding:22px 20px}.account-shell .account-profile-line{align-items:flex-start;gap:12px}.account-shell .account-profile-line>i{border-radius:14px;flex-shrink:0;width:48px;height:48px;font-size:1.125rem}.account-shell .account-name-display{flex-direction:column;align-items:flex-start;gap:10px}.account-shell .account-name-display h1{font-size:1.375rem}.account-shell .account-name-display p{font-size:.8125rem}.account-shell .account-name-display>button{min-height:44px;padding:8px 12px}.account-profile-meta{gap:6px 14px;margin:12px 0 0}.account-profile-meta small{width:100%}.account-shell .account-stat-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:12px 0 24px}.account-shell .account-stat-grid article{text-align:center;border-radius:13px;padding:14px 8px;display:block}.account-shell .stat-symbol{display:none}.account-shell .account-stat-grid small{font-size:.875rem}.account-shell .account-stat-grid b{margin-top:6px;font-size:1.625rem}.account-shell .account-stat-grid p{display:none}.account-shell .account-history{border-radius:16px}.account-shell .account-history>header{flex-direction:row;align-items:center;gap:10px;padding:20px 16px 14px}.account-shell .account-history h2{font-size:1.25rem}.account-shell .account-history>header p{font-size:.75rem}.account-shell .account-history-filters{scrollbar-width:thin;flex-wrap:nowrap;gap:6px;padding:0 14px 14px;overflow-x:auto}.account-history-filters button{flex-shrink:0;padding:8px 11px;font-size:.8125rem}.account-shell .account-history-list>article{grid-template-columns:104px minmax(0,1fr);align-items:start;gap:12px;padding:18px 14px}.account-shell .account-history-copy{grid-area:1/2}.account-shell .account-history-copy h3{margin:6px 0 2px;font-size:1rem}.account-shell .account-history-copy .account-playback-position{margin-top:6px;font-size:.75rem;display:block}.account-shell .account-quiz-record{text-align:left;grid-area:2/1}.account-shell .account-resume{grid-area:2/2;place-self:center end}.account-shell .account-inline-review{grid-column:1/-1}.experience-upgrade .back-button{width:auto;min-height:44px;margin:10px 18px 4px}.learning-experience .lesson-hero{width:100%;margin:0 0 30px}.lesson-heading{padding:8px 18px 18px}.lesson-heading h1{margin:9px 0 10px;font-size:1.625rem;line-height:1.5}.lesson-caption-row{gap:10px}.lesson-heading .lesson-subtitle{width:100%;font-size:.9375rem}.learning-experience .lesson-video{border-radius:0;width:100%}.learning-experience .lesson-intro{padding:18px 18px 0}.learning-experience .lesson-description{font-size:1rem;line-height:1.8}.learning-experience .lesson-stage-summary{flex-direction:column;align-items:flex-start;gap:12px;margin-top:18px;padding:16px 0;display:flex}.learning-experience .mark-video-button{min-height:44px;margin:0}.learning-experience .upgraded-quiz{margin:0 14px;padding:0 0 20px;scroll-margin-top:84px}.upgraded-quiz .quiz-head{margin-bottom:16px}.upgraded-quiz .quiz-head h2{font-size:1.375rem}.upgraded-quiz :is(.quiz-card,.empty-quiz,.quiz-complete){border-radius:16px;padding:22px 18px}.upgraded-quiz .quiz-card h3{margin:22px 0 20px;font-size:1.1875rem;line-height:1.7}.upgraded-quiz .answer-grid{grid-template-columns:minmax(0,1fr);gap:10px}.upgraded-quiz .answer-grid button{min-height:60px;padding:12px;font-size:1rem}.upgraded-quiz .answer-feedback{flex-direction:column;align-items:stretch;gap:14px;padding:16px}.upgraded-quiz .answer-feedback button{width:100%;min-height:48px}.learning-experience .lesson-feedback{margin:0 14px 24px;padding:16px 18px}.experience-upgrade .next-stories{margin:24px auto calc(100px + env(safe-area-inset-bottom));padding:0 18px}.decision-video-experience .decision-overlay{z-index:1200;padding:max(14px,env(safe-area-inset-top)) 0 0;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#091711a3;flex-direction:column;justify-content:flex-end;align-items:center;display:flex;position:fixed;inset:0}.decision-video-experience .decision-card{width:100%;max-width:620px;max-height:90dvh;padding:24px 20px calc(24px + env(safe-area-inset-bottom));overscroll-behavior:contain;border-radius:24px 24px 0 0;overflow-y:auto}.decision-card:before{content:"";background:#cdd6cb;border-radius:4px;width:36px;height:4px;margin:-10px auto 19px;display:block}.decision-video-experience .decision-time{margin-top:12px;font-size:.8125rem;line-height:1.7;display:block}.decision-video-experience .decision-card h2{font:700 1.375rem/1.6 var(--story-font);margin:10px 0 22px}.decision-video-experience .decision-choices{gap:11px}.decision-video-experience .decision-choices button{border-radius:12px;min-height:58px;padding:13px}.decision-video-experience .decision-choices i{flex-basis:30px;width:30px;height:30px}.decision-video-experience .decision-choices span,.decision-video-experience .decision-text-feedback p{font-size:1rem;line-height:1.7}.decision-video-experience .decision-replay-note{margin:16px 0 0;font-size:.8125rem;display:block}.decision-video-experience .decision-overlay.mode-branch{background:#0d1812;justify-content:center;padding:16px 0}.decision-overlay.mode-branch .branch-video-stage{aspect-ratio:16/9;border-radius:0;width:100%;max-width:760px;height:auto;overflow:visible}.decision-overlay.mode-branch .branch-video-toolbar{background:#0d1812;align-items:center;gap:12px;padding:14px 16px;display:flex;position:absolute;top:100%;bottom:auto}.branch-video-toolbar span{font-size:.8125rem;line-height:1.6}.decision-video-experience.is-interactive-fullscreen .decision-overlay{z-index:12;position:absolute}.decision-video-experience.has-active-interaction .interactive-fullscreen-button{z-index:13}.decision-inline-sync{flex-direction:column;align-items:stretch}.decision-inline-sync button{min-height:44px}.decision-video-experience .interaction-replay-bar{gap:4px;max-width:calc(100% - 188px);padding:4px;top:8px;left:8px}.interaction-replay-bar>span{padding:0 5px}.decision-video-experience .interaction-replay-bar button{min-height:38px;padding:7px 10px}}@media (width<=760px) and (height<=500px){.decision-video-experience .decision-overlay{justify-content:center;padding:8px}.decision-video-experience .decision-card{border-radius:16px;max-height:calc(100dvh - 16px);padding:18px 20px}.decision-card:before,.decision-video-experience .decision-time,.decision-video-experience .decision-replay-note{display:none}.decision-video-experience .decision-card h2{margin:8px 0 14px;font-size:1.125rem}.decision-video-experience .decision-choices{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.decision-video-experience .decision-choices button{min-height:54px;padding:10px}.decision-overlay.mode-branch .branch-video-stage{width:min(100%,177.778dvh - 160px)}}@media (prefers-reduced-motion:reduce){.visual-design *,.learner-header *,.story-spotlight *,.lesson-card,.curated-path *{transition:none}}.remote-admin{color:var(--ink);background:#f4f7f3}.remote-admin-header{border-color:var(--line);background:#fffffff7;height:76px;padding:0 max(24px,50% - 680px)}.remote-admin-header>a{gap:11px}.remote-admin-header>a>span{border-radius:13px;width:40px;height:40px;font-size:1.25rem}.remote-admin-header>a div b{font:700 1.25rem/1.25 var(--story-font)}.remote-admin-header>a div small{color:var(--muted);margin-top:2px;font-size:.75rem}.remote-admin-header nav{gap:8px}.remote-admin-header nav a,.remote-admin-header nav button{min-height:44px;color:var(--muted);border-radius:10px;padding:9px 14px;font-size:.875rem}.remote-admin-header nav a:hover,.remote-admin-header nav button:hover{color:var(--green-dark);background:var(--surface-soft);border-color:#b9cbbb}.remote-admin-body{max-width:1360px;padding:42px 24px 90px}.remote-admin-title{align-items:end;gap:24px;margin-bottom:24px}.remote-admin-title>div>span,.remote-admin-toolbar>div>span{letter-spacing:.08em;font-size:.75rem}.remote-admin-title h1{font:700 clamp(1.8rem,3vw,2.35rem)/1.35 var(--story-font);margin:7px 0 6px}.remote-admin-title p{font-size:.9375rem;line-height:1.7}.remote-admin-title>button{background:var(--green);border-radius:11px;min-height:46px;padding:10px 18px;font-size:.9375rem}.remote-admin-stats{grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;margin:18px 0 28px}.remote-admin-stats article{box-shadow:none;border-radius:16px;padding:20px 22px}.remote-admin-stats small{color:var(--muted);font-size:.8125rem}.remote-admin-stats b{font:600 1.9rem/1.25 var(--ui-font);color:var(--ink);font-variant-numeric:tabular-nums;margin:5px 0 3px}.remote-admin-stats span{color:#78877f;font-size:.75rem}.admin-insights-toggle button{border-radius:10px;min-height:44px;font-size:.875rem}.learner-admin-panel,.remote-admin-content{border-color:var(--line);box-shadow:none;border-radius:20px}.learner-admin-panel>header{padding:22px 24px}.learner-admin-panel h2,.remote-admin-toolbar h2{font:700 1.55rem/1.4 var(--story-font)}.remote-admin-toolbar{padding:22px 24px}.remote-admin-toolbar>div:last-child{gap:8px}.remote-admin-toolbar button{border-radius:10px;min-height:44px;padding:9px 14px;font-size:.875rem}.admin-category-groups{background:#f7f9f6;gap:18px;padding:20px}.admin-category-group{border-color:var(--line);border-radius:16px}.admin-category-heading{padding:16px 18px}.admin-category-heading>i{border-radius:12px;width:40px;height:40px;font-size:1.05rem}.admin-category-heading h3{font:700 1.2rem/1.45 var(--story-font)}.admin-category-heading span{color:var(--muted);margin-top:2px;font-size:.75rem}.remote-admin-list>article{grid-template-columns:118px minmax(240px,1fr) 170px 76px 54px;gap:16px;padding:16px 18px}.admin-category-group .cover.mini{border-radius:10px;width:118px}.remote-admin-list article>div b{font:700 1rem/1.55 var(--story-font)}.remote-admin-list article>div small{margin-top:4px;font-size:.75rem;line-height:1.55}.remote-admin-list .video-connected{font-size:.75rem}.remote-admin-list .video-pending{color:#9a7654;margin-top:5px;font-size:.75rem;display:block}.experience-settings{border:1px solid var(--line);border-radius:13px;margin:4px 0;padding:17px}.experience-settings legend{color:var(--ink);padding:0 7px;font-weight:700}.experience-settings>p{color:var(--muted);margin:0 0 13px;font-size:.8125rem;line-height:1.6}.workspace-form label>small{color:var(--muted);margin-top:5px;font-size:.75rem;line-height:1.5;display:block}.remote-admin-list .admin-row-actions button,.remote-admin-list>article>button{border-radius:9px;min-height:40px;font-size:.8125rem}.remote-admin-list>article>button{padding:7px 5px}.admin-category-empty{font-size:.875rem}.lesson-workspace-shell{max-width:1460px;padding:28px 24px 90px}.lesson-workspace-header{grid-template-columns:170px minmax(0,1fr) 150px;gap:24px;margin-bottom:24px}.lesson-workspace-header>button:first-child{min-height:44px;color:var(--muted);font-size:.875rem}.lesson-workspace-header>div>span{color:var(--green);letter-spacing:.08em;font-size:.75rem}.lesson-workspace-header h1{font:700 clamp(1.6rem,3vw,2.15rem)/1.35 var(--story-font);margin:5px 0 4px}.lesson-workspace-header small{font-size:.8125rem;line-height:1.55}.workspace-publish{border-radius:11px;min-height:46px;font-size:.875rem}.lesson-workspace-grid{grid-template-columns:minmax(360px,.78fr) minmax(520px,1.22fr);gap:22px}.lesson-workspace-preview,.workspace-form,.workspace-content-panel{border-color:var(--line);box-shadow:var(--shadow-card);border-radius:18px}.workspace-player-status{background:#f7faf6;padding:14px 16px}.workspace-player-status small{font-size:.75rem}.workspace-player-status b{font-size:1.5rem}.workspace-player-status>span{font-size:.8125rem}.workspace-video-actions :is(button,a){border-radius:10px;min-height:44px;font-size:.875rem}.workspace-section-nav{gap:3px;padding:8px}.workspace-section-nav button{border-radius:11px;min-height:60px}.workspace-section-nav b{font-size:.9375rem}.workspace-section-nav small{font-size:.75rem}.workspace-section-nav button:hover,.workspace-section-nav button.is-active{background:var(--surface-soft)}.workspace-section-nav button.is-active>i{background:var(--green)}.workspace-form,.workspace-content-panel{padding:clamp(24px,3vw,36px)}.workspace-editor-heading>span{letter-spacing:.08em;font-size:.75rem}.workspace-editor-heading h2{font:700 1.75rem/1.35 var(--story-font);margin:5px 0 7px}.workspace-editor-heading p{font-size:.875rem;line-height:1.7}.workspace-editor-heading>button{min-height:44px;font-size:.875rem}.lesson-workspace-editor label{margin:17px 0;font-size:.875rem;line-height:1.7}.lesson-workspace-editor input,.lesson-workspace-editor select,.lesson-workspace-editor textarea{border-radius:10px;min-height:46px;font-size:1rem}.lesson-workspace-editor input:focus,.lesson-workspace-editor select:focus,.lesson-workspace-editor textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px #26704e1a}.workspace-save-bar{border-radius:12px;padding:10px 12px}.workspace-save-bar span{font-size:.8125rem}.workspace-save-bar button{min-height:44px;font-size:.875rem}.publish-check-panel{border-radius:13px;margin:8px;padding:16px}.publish-check-panel h3{font-size:1rem}.publish-check-panel p,.publish-check-panel small,.publish-check-panel li b,.publish-check-panel li span{font-size:.8125rem}.publish-check-panel>button,.publish-check-panel>a{min-height:44px;font-size:.875rem}.auth-shell{background:radial-gradient(circle at 18% 12%,#dcecdf,#0000 33%),#f4f7f3}.auth-card{border-color:var(--line);box-shadow:var(--shadow-card);border-radius:22px;padding:38px}.auth-brand{gap:10px}.auth-mark{border-radius:13px;width:40px;height:40px;font-size:1.25rem}.auth-brand b{font:700 1.25rem/1.3 var(--story-font)}.auth-brand small{margin-top:2px;font-size:.6875rem}.auth-heading{margin:32px 0 22px}.auth-heading>span{letter-spacing:.08em;font-size:.75rem}.auth-heading h1{font:700 2rem/1.4 var(--story-font);margin:6px 0 8px}.auth-heading p,.auth-phone-note,.muted-note{font-size:.875rem;line-height:1.7}.auth-form label{margin:15px 0;font-size:.875rem}.auth-form input,.auth-form select{border-radius:10px;min-height:48px;font-size:1rem}.auth-form>button{border-radius:11px;min-height:48px;font-size:.9375rem}.auth-switch button,.auth-method-switch button{min-height:44px;font-size:.875rem}.auth-error,.auth-success{font-size:.875rem;line-height:1.6}.auth-return,.auth-recovery-link{align-items:center;min-height:44px;font-size:.875rem;display:inline-flex}@media (width<=1050px){.remote-admin-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-workspace-grid{grid-template-columns:1fr}.lesson-workspace-preview{position:static}}@media (width<=760px){.remote-admin-header{height:calc(66px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 14px 0}.remote-admin-header>a div small{display:none}.remote-admin-header nav a{white-space:nowrap;color:#0000;width:44px;padding:0;overflow:hidden}.remote-admin-header nav a:first-letter{color:var(--green-dark)}.remote-admin-header nav button{padding:8px 10px;font-size:.8125rem}.remote-admin-body{padding:26px 14px 80px}.remote-admin-title{flex-direction:column;align-items:stretch;margin-bottom:18px}.remote-admin-title h1{font-size:1.65rem}.remote-admin-title p{font-size:.875rem}.remote-admin-title>button{width:100%}.remote-admin-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:14px 0 22px}.remote-admin-stats article{padding:15px 13px}.remote-admin-stats b{font-size:1.6rem}.learner-admin-panel,.remote-admin-content{border-radius:16px}.remote-admin-toolbar{flex-direction:column;align-items:stretch;gap:14px;padding:18px 16px}.remote-admin-toolbar>div:last-child{grid-template-columns:1fr 1fr;display:grid}.admin-category-groups{gap:12px;padding:10px}.admin-category-heading{padding:13px}.remote-admin-list>article{grid-template-columns:92px minmax(0,1fr);gap:12px;padding:14px 12px}.admin-category-group .cover.mini{width:92px}.admin-row-actions{grid-area:auto/1/auto/-1}.remote-admin-list>article>button{min-height:44px}.remote-admin-list>article>.is-live,.remote-admin-list>article>.is-draft{grid-column:1}.remote-admin-list>article>.admin-delete{grid-column:2}.lesson-workspace-shell{padding:18px 12px calc(80px + env(safe-area-inset-bottom))}.lesson-workspace-header{grid-template-columns:minmax(0,1fr);gap:12px}.lesson-workspace-header>button:first-child,.lesson-workspace-header>div,.lesson-workspace-header .workspace-publish{grid-column:1}.lesson-workspace-header>button:first-child{justify-self:start}.lesson-workspace-header h1{white-space:normal;font-size:1.5rem}.workspace-publish{width:100%}.workspace-player-status{flex-direction:column;align-items:flex-start;gap:6px}.workspace-player-status>span{text-align:left;max-width:none}.workspace-section-nav{scrollbar-width:none;display:flex;overflow-x:auto}.workspace-section-nav button{flex:0 0 150px}.workspace-form,.workspace-content-panel{border-radius:16px;padding:20px 16px}.workspace-editor-heading h2{font-size:1.55rem}.workspace-save-bar{bottom:calc(8px + env(safe-area-inset-bottom));margin:26px 0 0}.auth-shell{padding:16px}.auth-card{border-radius:18px;padding:28px 22px}.auth-heading h1{font-size:1.75rem}}.story-share-shell{color:#24302a;background:linear-gradient(#f7f9f5 0,#eef3ec 100%);min-height:100vh;padding-bottom:54px}.story-share-topbar{justify-content:space-between;align-items:center;gap:20px;max-width:1180px;min-height:74px;margin:auto;padding:14px 24px;display:flex}.story-share-brand{color:#25332c;align-items:center;gap:10px;text-decoration:none;display:flex}.story-share-brand>span{color:#fff;background:#3b875a;border-radius:12px;place-items:center;width:40px;height:40px;font:800 20px Songti SC,serif;display:grid}.story-share-brand b,.story-share-brand small{display:block}.story-share-brand b{letter-spacing:.08em;font:800 20px/1.1 Songti SC,serif}.story-share-brand small{color:#8a968e;letter-spacing:.11em;margin-top:4px;font-size:8px}.story-share-topbar>a:last-child{color:#4d6858;font-size:14px;text-decoration:none}.story-share-card{background:#fff;border:1px solid #dfe7de;border-radius:28px;grid-template-columns:minmax(0,1.08fr) minmax(380px,.92fr);width:min(1120px,100% - 48px);margin:38px auto 28px;display:grid;overflow:hidden;box-shadow:0 24px 65px #2641311a}.story-share-cover{background:#263c34;min-height:520px}.story-share-cover .story-cover{height:100%;min-height:520px}.story-share-copy{flex-direction:column;justify-content:center;padding:clamp(32px,5vw,58px);display:flex}.story-share-kicker{align-items:center;gap:9px;display:flex}.story-share-kicker span,.story-share-kicker small{color:#2f734c;background:#eaf3e9;border-radius:6px;padding:5px 8px;font-size:12px;font-weight:700}.story-share-kicker small{color:#76684b;background:#f3f1e9}.story-share-copy h1{letter-spacing:-.025em;text-wrap:balance;margin:17px 0 10px;font:700 clamp(30px,3.2vw,45px)/1.36 Songti SC,serif}.story-share-subtitle{color:#52685b;margin:0;font-size:17px;line-height:1.7}.story-share-meta{flex-wrap:wrap;gap:8px;margin:23px 0;display:flex}.story-share-meta span{color:#65766b;background:#f8faf7;border:1px solid #e1e8e0;border-radius:8px;padding:7px 9px;font-size:13px}.story-share-meta b{color:#325842}.story-share-description{color:#697a70;margin:0 0 26px;font-size:15px;line-height:1.8}.story-share-cta{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.story-share-primary,.story-share-actions button{cursor:pointer;border-radius:11px;justify-content:center;align-items:center;gap:11px;min-height:48px;padding:11px 17px;font-size:15px;font-weight:700;text-decoration:none;display:inline-flex}.story-share-primary{color:#fff;background:#34764e;border:1px solid #34764e}.story-share-primary span{font-size:20px}.story-share-actions{position:relative}.story-share-actions button{color:#3f5d49;background:#fff;border:1px solid #d5dfd5}.story-share-actions button svg{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;width:19px;height:19px}.story-share-actions>span{color:#4f6858;min-width:120px;font-size:12px;position:absolute;top:55px;left:0}.story-share-account-note{color:#8b968f;margin:14px 0 0;font-size:12px}.story-share-footer{color:#6e7d74;justify-content:space-between;gap:20px;width:min(1120px,100% - 48px);margin:auto;padding:16px 4px;font-size:13px;display:flex}.story-share-footer b{color:#405c4b;font-family:Songti SC,serif}.story-share-missing{place-items:center;padding:24px;display:grid}.story-share-missing>section{background:#fff;border:1px solid #dce5dc;border-radius:22px;width:min(520px,100%);padding:40px;box-shadow:0 20px 55px #26413117}.story-share-missing h1{margin:38px 0 12px;font:700 32px/1.4 Songti SC,serif}.story-share-missing p{color:#697a70;margin:0 0 24px;font-size:15px;line-height:1.7}.lesson-share-link,.story-card-share{color:#356c49;align-items:center;min-height:36px;font-size:13px;font-weight:650;text-decoration:none;display:inline-flex}.lesson-share-link{background:#fff;border:1px solid #dce5db;border-radius:7px;padding:5px 9px}.experience-upgrade .card-bottom .story-card-share{min-height:42px;padding:8px 5px}.spotlight-share-link{color:#d3e4d5;text-underline-offset:4px;font-size:13px}@media (width<=760px){.story-share-topbar{min-height:64px;padding:12px 16px}.story-share-topbar>a:last-child{font-size:13px}.story-share-card{border-radius:20px;flex-direction:column;width:calc(100% - 28px);margin:18px auto 22px;display:flex}.story-share-cover,.story-share-cover .story-cover{aspect-ratio:16/9;height:auto;min-height:0}.story-share-copy{padding:25px 20px 28px}.story-share-copy h1{font-size:30px}.story-share-subtitle{font-size:16px}.story-share-description{font-size:15px}.story-share-cta{flex-direction:column;align-items:stretch}.story-share-primary,.story-share-actions,.story-share-actions button{width:100%}.story-share-actions>span{text-align:center;margin-top:7px;display:block;position:static}.story-share-footer{flex-direction:column;align-items:flex-start;width:calc(100% - 32px)}.lesson-share-link{min-height:44px}}.experience-upgrade{--night:#0d1516;--night-soft:#142022;--night-panel:#172426;--night-line:#e2eee621;--night-text:#f2f1e9;--night-muted:#a9b5b0;--night-accent:#d7bc7d;--night-green:#9ebd9e;min-height:100vh;color:var(--night-text);background:radial-gradient(at 78% -10%,#587b6f40,#0000 42%),radial-gradient(at 8% 34%,#6b513421,#0000 32%),linear-gradient(#0c1415 0%,#10191a 54%,#0b1213 100%)}.experience-upgrade .learner-header.site-header{border-color:var(--night-line);height:76px;color:var(--night-text);-webkit-backdrop-filter:blur(18px)saturate(120%);background:#0b1213d6}.experience-upgrade .learner-header .brand-button,.experience-upgrade .learner-header .logo b{color:var(--night-text)}.experience-upgrade .learner-header .logo>span{background:#bd9652;box-shadow:inset 0 -6px #4d33182e}.experience-upgrade .learner-header.site-header nav a{color:#95a29e}.experience-upgrade .learner-header.site-header nav a.active{color:#f3f1e8;background:#eef2e717}.experience-upgrade .learner-header .avatar{color:#18211d;background:#d7ddcc}.experience-upgrade .learner-header .user-login-link{color:#e9eadd;background:#ffffff0d;border-color:#ebf0e638}.experience-upgrade .learner-header .user-signout{color:#a7b2ae;background:0 0}.experience-upgrade .learn-page{padding-top:1px}.experience-upgrade .discovery-intro{align-items:flex-end;min-height:168px;padding:54px 0 28px}.experience-upgrade .hello-pill{color:var(--night-accent)}.experience-upgrade .discovery-intro h1{max-width:760px;color:var(--night-text);letter-spacing:.015em;margin-top:10px;font-size:clamp(2rem,4vw,3.4rem);line-height:1.25}.experience-upgrade .watched-chip{color:var(--night-muted)}.experience-upgrade .watched-chip b,.experience-upgrade .watched-chip svg{color:#c8d8c2}.experience-upgrade .story-spotlight{border:1px solid var(--night-line);background:#172224;border-radius:28px;grid-template-columns:minmax(0,1.42fr) minmax(350px,.78fr);min-height:420px;box-shadow:0 34px 90px #00000045}.experience-upgrade .story-spotlight h2{max-width:12em;font-size:clamp(2rem,3.2vw,3rem);line-height:1.34}.experience-upgrade .story-spotlight p,.experience-upgrade .story-metadata{color:#b3c0ba}.experience-upgrade .spotlight-kicker{color:#d9dfd5}.experience-upgrade .spotlight-kicker>span{background:var(--night-accent)}.experience-upgrade .story-spotlight .primary-action{color:#142019;min-width:210px;box-shadow:none;background:#d8dfc8;border-radius:999px}.experience-upgrade .story-spotlight .primary-action:hover{background:#f0f1e6}.experience-upgrade .spotlight-share-link{color:#a9b7b1}.experience-upgrade .library-section{padding-top:36px;padding-bottom:46px}.experience-upgrade .section-title h2{color:var(--night-text);font-size:1.75rem}.experience-upgrade .category-row button{color:#b2bdb8;border-color:var(--night-line);background:#ffffff0a}.experience-upgrade .category-row button small{color:#73817c}.experience-upgrade .category-row button.active small{color:#425048}.experience-upgrade .lesson-card{color:var(--night-text);border-color:var(--night-line);background:#ffffff0b;box-shadow:0 14px 38px #0000001f}.experience-upgrade .lesson-card:hover{border-color:#dce3d552;box-shadow:0 20px 50px #0000003b}.experience-upgrade .lesson-tags small,.experience-upgrade .lesson-card-copy>p{color:#93a09b}.experience-upgrade .lesson-card h3{color:#eeede5}.experience-upgrade .card-bottom{border-color:var(--night-line)}.experience-upgrade .card-bottom em,.experience-upgrade .story-status{color:#9eaaa5;background:#ffffff0f}.experience-upgrade .card-bottom .status-new{color:#89958f}.experience-upgrade .curated-path{color:#d9e0d8;border-color:var(--night-line);background:#ffffff0a}.experience-upgrade .curated-path summary small{color:#8d9b95}.experience-upgrade .curated-path li>span{color:#e4e8dd;background:#dce6d41f}.experience-upgrade .curated-path li button{color:#dce2da}.experience-upgrade .back-button{color:#9caaa4}.learning-experience .lesson-heading{padding-top:22px}.learning-experience .lesson-heading h1{color:var(--night-text);font-size:clamp(2rem,4vw,3.25rem)}.learning-experience .lesson-heading .lesson-tags>span{color:var(--night-accent)}.learning-experience .lesson-heading .lesson-tags small,.learning-experience .lesson-heading .lesson-subtitle{color:var(--night-muted)}.learning-experience .lesson-heading .story-period{border-color:var(--night-line);background:#ffffff0d}.learning-experience .lesson-heading .story-period svg{color:var(--night-accent)}.learning-experience .lesson-heading .story-period span,.learning-experience .lesson-heading .story-period b,.learning-experience .lesson-share-link{color:#aab6b1}.learning-experience .lesson-video{background:#050909;border:1px solid #e8efe41f;border-radius:26px;box-shadow:0 36px 90px #00000061}.learning-experience .lesson-intro{padding:28px 2px 0}.learning-experience .lesson-description{color:#aab6b0}.learning-experience .lesson-stage-summary{border-color:var(--night-line)}.learning-experience .lesson-stage-summary>span{color:#96a39d}.learning-experience .lesson-stage-summary>span.is-complete{color:#bdd0b9}.learning-experience .mark-video-button{color:#b2beb8;border-color:var(--night-line);background:#ffffff0a}.learning-experience .upgraded-quiz,.learning-experience .lesson-feedback,.experience-upgrade .next-stories{color:#23332d}.learning-experience .upgraded-quiz{background:#f0f1eb;border-radius:24px;margin-top:58px;padding:34px}.learning-experience .lesson-feedback{background:#f0f1eb;border-color:#0000}.experience-upgrade .next-stories{background:#f0f1eb;border-radius:22px;padding:28px}.learner-auth-shell{isolation:isolate;color:#eef0e8;background:radial-gradient(circle at 74% 18%,#6e897c40,#0000 30%),radial-gradient(circle at 12% 90%,#7d5c362e,#0000 34%),linear-gradient(135deg,#0b1214,#152225 55%,#10191b);min-height:100vh;padding:64px 24px;position:relative}.learner-auth-shell:before{content:"";z-index:-1;opacity:.18;pointer-events:none;background-image:linear-gradient(#ffffff08 1px,#0000 1px),linear-gradient(90deg,#ffffff08 1px,#0000 1px);background-size:56px 56px;position:fixed;inset:0;-webkit-mask-image:linear-gradient(#000,#0000 82%);mask-image:linear-gradient(#000,#0000 82%)}.learner-auth-shell .learner-auth-card{color:#eef0e8;width:min(480px,100%);box-shadow:none;background:0 0;border:0;border-radius:0;padding:18px 12px}.learner-auth-shell .auth-brand{color:#f2f2e9}.learner-auth-shell .auth-mark{color:#172019;background:#d3c088}.learner-auth-shell .auth-brand small{color:#87958f}.learner-auth-shell .auth-heading{margin:48px 0 26px}.learner-auth-shell .auth-heading>span{color:#c8ad70}.learner-auth-shell .auth-heading h1{color:#f2f1e9;font-size:clamp(2rem,5vw,2.65rem)}.learner-auth-shell .auth-heading p{color:#a7b3ae;font-size:.9375rem}.learner-auth-shell .auth-switch,.learner-auth-shell .auth-method-switch{background:#ffffff0a;border-color:#e5ece41f}.learner-auth-shell .auth-switch button,.learner-auth-shell .auth-method-switch button{color:#8f9c97}.learner-auth-shell .auth-switch button.active,.learner-auth-shell .auth-method-switch button.active{color:#eef0e8;background:#ffffff17}.learner-auth-shell .auth-form label{color:#bdc6c2}.learner-auth-shell .auth-form input,.learner-auth-shell .auth-form select{color:#f1f2ec;background:#ffffff0d;border-color:#e5ece424}.learner-auth-shell .auth-form input::placeholder{color:#697672}.learner-auth-shell .auth-form select option{color:#17201d}.learner-auth-shell .auth-form input:focus,.learner-auth-shell .auth-form select:focus{border-color:#c3ad78;box-shadow:0 0 0 3px #c3ad7824}.learner-auth-shell .auth-form>button{color:#152019;background:#d8dfc8;border-radius:999px;min-height:52px;margin-top:16px}.learner-auth-shell .auth-recovery-link,.learner-auth-shell .auth-return{color:#a9b5b0}.learner-auth-shell .auth-phone-note{color:#8f9d97}@media (width<=760px){.experience-upgrade .learner-header.site-header{background:#0d1516}.experience-upgrade .learner-header.site-header nav{border-color:var(--night-line);background:#0c1415f7;box-shadow:0 -10px 28px #00000040}.experience-upgrade .discovery-intro{min-height:132px;padding:34px 0 22px}.experience-upgrade .discovery-intro h1{font-size:2rem}.experience-upgrade .story-spotlight{border-radius:20px;min-height:0}.experience-upgrade .story-spotlight>.story-cover:after{background:linear-gradient(#0000 62%,#172224 100%)}.experience-upgrade .story-spotlight .spotlight-copy{padding:22px}.experience-upgrade .story-spotlight h2{font-size:1.75rem}.experience-upgrade .library-section{padding-top:14px}.experience-upgrade .category-row{width:calc(100% + 14px);padding-right:14px;display:flex;overflow-x:auto}.experience-upgrade .category-row button,.experience-upgrade .category-row button:first-child{grid-column:auto;justify-content:center;width:auto;min-width:max-content}.experience-upgrade .lesson-card{background:#ffffff0d}.learning-experience .lesson-heading{padding:14px 18px 20px}.learning-experience .lesson-heading h1{font-size:1.9rem}.learning-experience .lesson-video{border-left:0;border-right:0;border-radius:0;box-shadow:0 18px 50px #00000052}.learning-experience .lesson-intro{padding:22px 18px 0}.learning-experience .upgraded-quiz{border-radius:18px;margin:42px 14px 20px;padding:22px 18px}.learning-experience .lesson-feedback{background:#f0f1eb}.experience-upgrade .next-stories{margin-left:14px;margin-right:14px;padding:20px 18px}.learner-auth-shell{padding:34px 18px calc(40px + env(safe-area-inset-bottom));place-items:start center}.learner-auth-shell .learner-auth-card{padding:0}.learner-auth-shell .auth-heading{margin-top:42px}}@media (prefers-reduced-motion:reduce){.experience-upgrade *,.learner-auth-shell *{scroll-behavior:auto;transition:none!important}}.experience-upgrade{background-color:#07182a;background-image:linear-gradient(#0311222b,#040f1b85),url(/site-assets/homepage-background.webp);background-position:top;background-size:cover;background-attachment:fixed;min-height:100vh}.experience-upgrade.screen-lesson{background-image:linear-gradient(#030e1c24,#030d177a),url(/site-assets/video-view-background.webp)}.experience-upgrade .learner-header.site-header{-webkit-backdrop-filter:blur(18px)saturate(120%);background:linear-gradient(90deg,#061c31d4,#11364cab);border:1px solid #cee6eb45;border-radius:18px;width:min(1400px,100% - 64px);height:74px;margin:30px auto 0;padding:0 30px;top:16px;box-shadow:0 18px 45px #00081438}.experience-upgrade .learner-header .logo{min-width:190px}.experience-upgrade .learner-header .logo>span{background:#f3a640;border-radius:15px 15px 18px 18px;width:42px;height:42px}.experience-upgrade .learner-header .logo b{font-size:1.72rem}.experience-upgrade .learner-header .logo small{color:#c5d1d5}.experience-upgrade .learner-header.site-header nav{gap:12px}.experience-upgrade .learner-header.site-header nav a{color:#e5edf0;justify-content:center;min-width:126px}.experience-upgrade .learner-header.site-header nav a.active{color:#eff8d7;background:#2d63536e;border:1px solid #c2e0b861}.experience-upgrade .learner-header .user-login-link{color:#f0f7d9;background:#0c243657;border-color:#d7ebc799;border-radius:12px;justify-content:center;min-width:142px;font-size:1rem;font-weight:700}.experience-upgrade .discovery-intro{min-height:154px;padding:42px 0 22px}.experience-upgrade .hello-pill{color:#dce8ee;font-size:.98rem}.experience-upgrade .discovery-intro h1{color:#f5f6f3;text-shadow:0 3px 18px #00071447;margin-top:6px;font-size:clamp(2.55rem,4.1vw,4rem);font-weight:500}.experience-upgrade .story-spotlight{-webkit-backdrop-filter:blur(12px);background:#041e23bf;border-color:#d1e6df70;border-radius:22px;grid-template-columns:minmax(0,1.08fr) minmax(390px,.92fr);min-height:396px;box-shadow:0 28px 70px #00081454}.experience-upgrade .story-spotlight>.story-cover:after{background:linear-gradient(90deg,#0000 68%,#031c236b),linear-gradient(#0000 55%,#000c1724)}.experience-upgrade .story-spotlight .spotlight-copy{background:linear-gradient(135deg,#052a2bdb,#041a25cc);padding:46px 50px}.experience-upgrade .spotlight-kicker{font-size:.95rem}.experience-upgrade .story-spotlight h2{font-size:clamp(2.15rem,3vw,3.05rem);font-weight:500}.experience-upgrade .story-spotlight p{font-size:1.05rem}.experience-upgrade .story-metadata{font-size:.92rem}.experience-upgrade .story-spotlight .primary-action{color:#183427;background:linear-gradient(135deg,#e2f2c3,#c5e6ad);border-radius:14px;min-width:238px;min-height:56px;padding-inline:28px;font-size:1rem}.experience-upgrade .spotlight-share-link{color:#d2dcda;font-size:.92rem}.experience-upgrade .library-section{background:0 0;padding-top:4px}.experience-upgrade .section-title h2{text-shadow:0 2px 14px #0008144d;font-size:2rem;font-weight:500}.experience-upgrade .section-title>p{color:#d1dadc}.experience-upgrade .category-row button{-webkit-backdrop-filter:blur(10px);background:#061b2e8f;border-color:#cde2e570}.experience-upgrade .category-row button.active{color:#eff7dc;background:#236142c7;border-color:#98c495}.experience-upgrade .lesson-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.experience-upgrade .lesson-card{-webkit-backdrop-filter:blur(12px);background:#041625b3;border-color:#cfe3e557}.experience-upgrade .lesson-card-copy{background:linear-gradient(#0418286b,#03121fbf)}.experience-upgrade .curated-path{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#041928b8}.experience-upgrade.screen-lesson .back-button{color:#eef2ef;max-width:1000px;margin-top:28px;font-size:.95rem}.experience-upgrade.screen-lesson .lesson-hero{max-width:1000px;margin-bottom:32px}.experience-upgrade.screen-lesson .lesson-heading{padding:8px 0 20px}.experience-upgrade.screen-lesson .lesson-heading .lesson-tags>span{color:#65ebd2}.experience-upgrade.screen-lesson .lesson-heading .lesson-tags small{color:#e4eaeb}.experience-upgrade.screen-lesson .lesson-heading h1{color:#fff;margin:12px 0 4px;font-size:clamp(2.35rem,4vw,3.4rem);font-weight:500}.experience-upgrade.screen-lesson .lesson-caption-row{align-items:center}.experience-upgrade.screen-lesson .lesson-heading .lesson-subtitle{color:#e1e7e7;font-family:var(--story-font);flex:430px;font-size:1.25rem}.experience-upgrade.screen-lesson .lesson-heading .story-period,.experience-upgrade.screen-lesson .lesson-share-link{color:#e8eeee;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#08213578;border:1px solid #cbdfe540;border-radius:12px;min-height:46px;padding:10px 15px}.experience-upgrade.screen-lesson .lesson-heading .story-period :is(span,b){color:#e8eeee}.experience-upgrade.screen-lesson .lesson-share-link{border-color:#5dd3b266;text-decoration:none}.experience-upgrade.screen-lesson .lesson-video{border-color:#dce8e83d;border-radius:14px;box-shadow:0 30px 80px #00081461}.experience-upgrade.screen-lesson .lesson-intro{-webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);background:#03121f5c;border-top:1px solid #d1e1e32e;border-bottom:1px solid #d1e1e32e;margin-top:20px;padding:24px 28px}.experience-upgrade.screen-lesson .lesson-description{color:#e0e6e5}.experience-upgrade.screen-lesson .lesson-stage-summary{border-bottom:0}.experience-upgrade.screen-lesson .learning-experience .upgraded-quiz{margin-top:44px}.learner-auth-shell{background-image:linear-gradient(90deg,#020d1c73,#05162a1f 48%,#020d1c47),url(/site-assets/homepage-background.webp);background-position:50%;background-size:cover;min-height:100vh;padding:0;display:block;overflow:hidden}.learner-auth-topbar{z-index:2;align-items:center;gap:22px;display:flex;position:absolute;top:34px;left:50px;right:50px}.learner-auth-topbar .auth-brand{color:#fff}.learner-auth-topbar .auth-mark{color:#fff;background:0 0;width:auto;font-size:2rem}.learner-auth-topbar .auth-brand b{font-size:1.65rem}.learner-auth-topbar .auth-brand small{color:#b7c7df;letter-spacing:.3em}.auth-brand-line{color:#b8c7df;letter-spacing:.12em;border-left:1px solid #dce7f273;padding-left:22px}.auth-language{color:#eef3f8;background:#0c223b7a;border:1px solid #dae7f53d;border-radius:999px;margin-left:auto;padding:10px 18px}.auth-manifesto{color:#b9c8e1;flex-direction:column;display:flex;position:absolute;top:30%;left:5%}.auth-manifesto strong{font:400 clamp(2rem,3.2vw,3.15rem)/1.25 Georgia,serif}.auth-manifesto i{background:#9fb3d5;width:34px;height:2px;margin:28px 0 20px}.auth-manifesto span{letter-spacing:.12em;font-size:1.05rem;line-height:1.75}.learner-auth-shell .learner-auth-card{width:min(510px,100% - 36px);margin:132px auto 42px;padding:0}.auth-category-cards{perspective:900px;justify-content:center;align-items:center;gap:8px;height:182px;display:flex}.auth-category-cards>span{color:#f4f8ff;background:linear-gradient(160deg,#3276afad,#092a52d6);border:1px solid #97c6ef52;border-radius:16px;flex-direction:column;justify-content:flex-end;width:112px;min-height:144px;padding:18px 12px;display:flex;transform:rotateY(7deg)rotate(-3deg);box-shadow:0 18px 36px #00091c47}.auth-category-cards>span:nth-child(4){background:linear-gradient(160deg,#6274a1b8,#0f2a4ee0);transform:rotateY(-8deg)rotate(5deg)}.auth-category-cards svg{color:#a9dcff;width:32px;height:32px;margin-bottom:auto}.auth-category-cards small{color:#c1d2df;font-size:.72rem}.learner-auth-shell .auth-heading{text-align:center;margin:12px 0 20px}.learner-auth-shell .auth-heading h1{font-family:var(--ui-font);margin:0 0 4px;font-size:2.25rem}.learner-auth-shell .auth-heading h1 em{color:#48a2ff;font-style:normal}.learner-auth-shell .auth-heading p{color:#bdcbe0;letter-spacing:.1em;margin:0}.learner-auth-shell .auth-switch{background:0 0;border:0;border-bottom:1px solid #bcd1e933;border-radius:0;padding:0}.learner-auth-shell .auth-switch button{box-shadow:none;background:0 0;border-radius:0}.learner-auth-shell .auth-switch button.active{color:#fff;background:0 0;border-bottom:3px solid #2ba7ff}.learner-auth-shell .auth-method-switch{justify-content:center}.learner-auth-shell .auth-form input,.learner-auth-shell .auth-form select{background:#233f608f;border-radius:12px;min-height:56px}.learner-auth-shell .auth-form>button{color:#fff;background:linear-gradient(90deg,#1588fb,#3aa9ff);border-radius:12px;min-height:56px;font-size:1.05rem}.learner-auth-shell .auth-form>button:hover{background:linear-gradient(90deg,#2b99ff,#55b5ff)}.learner-auth-shell .auth-return{color:#bdcbe0}@media (width<=1180px){.experience-upgrade .lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.auth-manifesto{display:none}}@media (width<=760px){.experience-upgrade{background-position:top;background-attachment:scroll}.experience-upgrade .learner-header.site-header{width:100%;height:calc(64px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 16px 0;background:#051626e8;border-width:0 0 1px;border-radius:0;margin:0;top:0}.experience-upgrade .learner-header .logo{min-width:0}.experience-upgrade .learner-header.site-header nav{background:#051626f5}.experience-upgrade .learner-header.site-header nav a{min-width:0}.experience-upgrade .discovery-intro{padding-top:34px}.experience-upgrade .discovery-intro h1{font-size:2.05rem}.experience-upgrade .story-spotlight{grid-template-columns:1fr}.experience-upgrade .story-spotlight .spotlight-copy{padding:22px}.experience-upgrade .lesson-grid{grid-template-columns:1fr}.experience-upgrade.screen-lesson .back-button{margin-top:16px}.experience-upgrade.screen-lesson .lesson-heading h1{font-size:2rem}.experience-upgrade.screen-lesson .lesson-heading .lesson-subtitle{flex-basis:100%;font-size:1.05rem}.experience-upgrade.screen-lesson .lesson-heading .story-period,.experience-upgrade.screen-lesson .lesson-share-link{min-height:42px;padding:8px 10px}.experience-upgrade.screen-lesson .lesson-intro{margin-top:12px;padding:20px 18px}.learner-auth-shell{background-position:58%;min-height:100dvh;overflow:auto}.learner-auth-topbar{padding:22px 20px 0;position:relative;inset:auto}.auth-brand-line,.auth-language{display:none}.learner-auth-shell .learner-auth-card{margin:28px auto 36px}.auth-category-cards{gap:5px;height:116px}.auth-category-cards>span{border-radius:12px;width:78px;min-height:102px;padding:10px 8px}.auth-category-cards>span:nth-child(2),.auth-category-cards>span:nth-child(3){min-height:112px}.auth-category-cards svg{width:24px;height:24px}.auth-category-cards b{font-size:.82rem}.auth-category-cards small{display:none}.learner-auth-shell .auth-heading{margin-top:18px}.learner-auth-shell .auth-heading h1{font-size:1.85rem}.learner-auth-shell .auth-heading p{font-size:.82rem}}.experience-upgrade{padding-top:1px}.experience-upgrade .learner-header.site-header{margin-top:29px}.experience-upgrade :is(h1,h2,h3,h4,b,strong){color:#f4f5f1}.experience-upgrade :is(p,small,time){color:#b8c5c7}.experience-upgrade :is(a,button){color:inherit}.experience-upgrade .story-spotlight{contain:paint;overflow:hidden}.experience-upgrade .story-spotlight>.story-cover{aspect-ratio:auto;clip-path:inset(0 round 21px 0 0 21px);background:#263d49;border-radius:21px 0 0 21px;min-width:0;height:100%;overflow:hidden}.experience-upgrade .story-spotlight>.story-cover .cover-photo{object-fit:cover;object-position:center;width:100%;max-width:100%;height:100%;inset:0;transform:translateZ(0)}.experience-upgrade .story-spotlight>.story-cover .cover-period{display:none}.experience-upgrade .story-spotlight .spotlight-copy{border-radius:0 21px 21px 0;min-width:0;overflow:hidden}.experience-upgrade .story-spotlight .spotlight-copy :is(h2,p,small,span,a){color:inherit}.experience-upgrade .story-spotlight .spotlight-copy>p,.experience-upgrade .story-spotlight .story-metadata{color:#d0dcda}.experience-upgrade .story-spotlight .spotlight-kicker{color:#eef2ec}.experience-upgrade .story-spotlight .spotlight-share-link{color:#d8e2e1}.experience-upgrade .section-title h2,.experience-upgrade .lesson-card h3,.experience-upgrade .curated-path summary,.experience-upgrade .next-stories h2{color:#f4f5f1}.experience-upgrade .section-title>p,.experience-upgrade .lesson-card-copy>p,.experience-upgrade .lesson-tags small,.experience-upgrade .curated-path small{color:#bbc7c8}.experience-upgrade .lesson-tags>span{color:#bfe0d5}.experience-upgrade .card-bottom button{color:#eef4eb}.experience-upgrade .card-bottom em{color:#b9c5c4}.experience-upgrade .content-state{color:#e8efed;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#051c2dc2;border-color:#cde2e547}.experience-upgrade .content-state :is(h3,p){color:inherit}.experience-upgrade.screen-lesson .lesson-intro :is(p,span,b){color:#e0e8e7}.experience-upgrade.screen-lesson .lesson-stage-summary>span{color:#c5d0cf}.experience-upgrade.screen-lesson .lesson-stage-summary>span.is-complete{color:#bde5cd}.experience-upgrade.screen-lesson .mark-video-button{color:#e1e8e6}.experience-upgrade.screen-lesson .upgraded-quiz,.experience-upgrade.screen-lesson .lesson-feedback,.experience-upgrade.screen-lesson+.next-stories,.experience-upgrade .next-stories{color:#e8efed;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#051a2ac7;border:1px solid #cde2e538}.experience-upgrade.screen-lesson .upgraded-quiz :is(h2,h3,b,p,small,span,summary),.experience-upgrade.screen-lesson .lesson-feedback :is(h2,h3,b,p,small,span,summary),.experience-upgrade .next-stories :is(h2,h3,b,p,small,span){color:inherit}.experience-upgrade.screen-lesson .quiz-card,.experience-upgrade.screen-lesson .quiz-complete,.experience-upgrade.screen-lesson .empty-quiz{color:#e8efed;box-shadow:none;background:#122d3ab8;border-color:#cde2e52e}.experience-upgrade.screen-lesson .answer-grid button{color:#e9efed;background:#ffffff0d;border-color:#cde2e538}.experience-upgrade.screen-lesson .answer-grid button>i{color:#c7d8d1;background:#ffffff14}.experience-upgrade .next-stories button{color:#e7eeeb;background:#ffffff0d;border-color:#cde2e533}.learner-auth-shell:before{opacity:1;background:linear-gradient(90deg,#020d1b3d,#0000 32%,#0513231a 70%,#010a163d);-webkit-mask-image:none;mask-image:none}.learner-auth-topbar{top:30px;left:48px;right:44px}.learner-auth-topbar .auth-mark{background:0 0;border-radius:0;width:auto;height:auto;padding:0;font-size:2rem;line-height:1}.learner-auth-shell .learner-auth-card{margin-top:118px}.auth-category-cards{height:188px;margin-bottom:2px}.auth-category-cards>span{background:linear-gradient(165deg,#2e7eb2c7,#07264de6);border-color:#7cbaef59;width:116px}.learner-auth-shell .auth-heading h1{color:#fff;font-weight:700}.learner-auth-shell .auth-heading p{color:#c7d4e6}.learner-auth-shell .auth-switch{margin-top:22px}.learner-auth-shell .auth-switch button{min-height:48px;font-size:1rem}.learner-auth-shell .auth-identity-hint{color:#adbfce;font-size:.8125rem;line-height:1.5;display:block}.learner-auth-shell .auth-recovery-link{color:#d0e4f3;text-underline-offset:4px;justify-self:end;align-items:center;min-height:44px;font-size:.875rem;display:inline-flex}.learner-auth-shell .auth-form{margin-top:20px}.learner-auth-shell .auth-identity-field,.learner-auth-shell .auth-password-field{margin:0 0 14px}.learner-auth-shell .auth-identity-field>span,.learner-auth-shell .auth-password-field>span{clip-path:inset(50%);width:1px;height:1px;position:absolute;overflow:hidden}.learner-auth-shell .auth-form input,.learner-auth-shell .auth-form select{color:#f5f8fc;background:#243d5ca3;border-color:#b7cfea4d;box-shadow:inset 0 1px #ffffff0a}.learner-auth-shell .auth-form input::placeholder{color:#b2c0d4;opacity:1}.learner-auth-shell .auth-form>button{margin-top:0;box-shadow:0 14px 34px #0063c633}.learner-auth-shell .auth-return{text-align:center;color:#b9c8dc;margin-top:16px;display:block}@media (width<=760px){.experience-upgrade{padding-top:0}.experience-upgrade .learner-header.site-header{margin-top:0}.experience-upgrade .story-spotlight>.story-cover{aspect-ratio:16/9;clip-path:inset(0 round 19px 19px 0 0);border-radius:19px 19px 0 0;height:auto}.experience-upgrade .story-spotlight .spotlight-copy{border-radius:0 0 19px 19px}.learner-auth-topbar{padding-top:20px}.learner-auth-shell .learner-auth-card{margin-top:24px}}.experience-upgrade .learner-header.site-header{-webkit-backdrop-filter:blur(10px)saturate(110%);background:linear-gradient(90deg,#051b2f6b,#0c2f4445);border-color:#dcecf021;box-shadow:inset 0 1px #ffffff0a}.experience-upgrade .learner-header.site-header:before{content:"";z-index:-1;border-radius:inherit;pointer-events:none;background:linear-gradient(#ffffff08,#0000 72%);position:absolute;inset:0}.experience-upgrade .learner-header.site-header nav a.active{background:#2f695645;border-color:#c2e0b83d;box-shadow:inset 0 0 18px #8bc8a40d}.experience-upgrade .learner-header .user-login-link{background:#091f302b;border-color:#d7ebc759}.learner-auth-topbar{display:none}.auth-category-cards{align-items:center;gap:12px;height:342px;margin-bottom:-8px}.auth-category-cards>span{background:radial-gradient(circle at 50% 24%,#80d9ff47,#0000 28%),linear-gradient(165deg,#3589bee0,#08264ef2);border-radius:18px;width:132px;min-height:218px;padding:22px 16px;box-shadow:0 22px 42px #00081c5c}.auth-category-cards>span:nth-child(2){background:radial-gradient(circle at 50% 24%,#88eedb4d,#0000 30%),linear-gradient(165deg,#3b979fe0,#08324bf5);min-height:254px;transform:translateY(-8px)rotate(-1deg)}.auth-category-cards>span:nth-child(3){background:radial-gradient(circle at 50% 24%,#6cb6ff57,#0000 28%),linear-gradient(165deg,#2366b0e6,#07224ff5);min-height:232px;transform:translateY(6px)rotateY(-5deg)rotate(2deg)}.auth-category-cards>span:nth-child(4){background:radial-gradient(circle at 50% 24%,#ffbd944d,#0000 30%),linear-gradient(165deg,#5c79abe6,#0c264cf5);min-height:212px;transform:translateY(18px)rotateY(-8deg)rotate(5deg)}.auth-category-cards svg{color:#d7efff;stroke-width:1.35px;background:#98daff21;border-radius:16px;width:52px;height:52px;margin:16px auto auto;padding:10px}.auth-category-cards b{font-size:1.08rem}.auth-category-cards small{margin-top:4px;font-size:.78rem}.learner-auth-shell .auth-heading{margin-top:0}.learner-auth-shell .auth-switch,.learner-auth-shell .auth-form,.learner-auth-shell .auth-return{width:min(500px,100%);margin-left:auto;margin-right:auto}.experience-upgrade.screen-lesson .upgraded-quiz{background:linear-gradient(145deg,#071f33e6,#0a2939d6);border-color:#9ec2d233;box-shadow:0 24px 62px #00081438}.experience-upgrade.screen-lesson .upgraded-quiz .quiz-head>div>span{color:#6fe0cf}.experience-upgrade.screen-lesson .upgraded-quiz .quiz-head h2{color:#f2f6f5}.experience-upgrade.screen-lesson .upgraded-quiz .quiz-head>p{color:#aebfc2}.experience-upgrade.screen-lesson .upgraded-quiz progress{accent-color:#43c8bd}.experience-upgrade.screen-lesson .upgraded-quiz progress::-webkit-progress-bar{background:#ffffff1a}.experience-upgrade.screen-lesson .upgraded-quiz progress::-webkit-progress-value{background:linear-gradient(90deg,#33b9ae,#75ded0)}.experience-upgrade.screen-lesson .upgraded-quiz progress::-moz-progress-bar{background:#43c8bd}.experience-upgrade.screen-lesson .quiz-card,.experience-upgrade.screen-lesson .quiz-complete,.experience-upgrade.screen-lesson .empty-quiz{background:#0f2f3fb8;border-color:#abccd72b}.experience-upgrade.screen-lesson .answer-grid button:hover:not(:disabled){background:#418c9129;border-color:#67daca7a}.experience-upgrade.screen-lesson .answer-grid button.correct{color:#e9fff3;background:#25704d78;border-color:#5dc28a}.experience-upgrade.screen-lesson .answer-grid button.wrong{color:#ffece8;background:#7d352e6b;border-color:#d27b6d}.experience-upgrade.screen-lesson .answer-feedback.good{color:#e9fff3;background:#25704d75}.experience-upgrade.screen-lesson .answer-feedback.retry{color:#ffece8;background:#7d352e6b}.experience-upgrade.screen-lesson .quiz-complete>span{color:#dff8e8;background:#3e9e6b59}.experience-upgrade.screen-lesson .quiz-score{color:#76dfc3}.experience-upgrade.screen-lesson .quiz-review{color:#dfe8e7;border-color:#b0ccd32b}.experience-upgrade.screen-lesson .quiz-review li{border-color:#b0ccd321}@media (width<=760px){.experience-upgrade .learner-header.site-header{-webkit-backdrop-filter:blur(12px);background:#051626b8;border-color:#dcecf01f}.learner-auth-shell .learner-auth-card{margin-top:24px}.auth-category-cards{gap:5px;height:166px}.auth-category-cards>span{width:78px;min-height:122px;padding:12px 8px}.auth-category-cards>span:nth-child(2){min-height:148px}.auth-category-cards>span:nth-child(3){min-height:136px}.auth-category-cards>span:nth-child(4){min-height:120px}.auth-category-cards svg{border-radius:9px;width:31px;height:31px;margin-top:7px;padding:5px}.auth-category-cards b{font-size:.8rem}.auth-category-cards small{display:none}.learner-auth-shell .auth-heading h1{font-size:2rem}.learner-auth-shell .auth-heading p{font-size:.86rem}}.learner-auth-topbar{display:flex;top:32px;left:50px;right:44px}.learner-auth-topbar .auth-brand{align-items:center;gap:0;display:flex}.learner-auth-topbar .auth-wordmark{align-items:baseline;gap:15px;display:flex}.learner-auth-topbar .auth-wordmark b{color:#f7f8fa;font:800 2.05rem/1 var(--ui-font);letter-spacing:.02em}.learner-auth-topbar .auth-wordmark small{color:#c6d5ea;font:500 .9rem/1 var(--ui-font);letter-spacing:.34em}.learner-auth-topbar .auth-brand-line{color:#b9c9e2;letter-spacing:.16em;font-size:.92rem}.learner-auth-topbar .auth-language{text-align:center;min-width:106px}.learner-auth-shell .learner-auth-card{width:min(600px,100% - 36px);margin-top:118px}.auth-category-cards{gap:8px;height:290px;margin-bottom:8px}.auth-category-cards>span{background:linear-gradient(#173d66 0%,#0b2a51 100%);border-color:#59a1df59;border-radius:16px;width:138px;min-height:210px;padding:0 14px 15px;overflow:hidden}.auth-category-cards>span:first-child{transform:translateY(18px)rotate(-5deg)}.auth-category-cards>span:nth-child(2){min-height:244px;transform:translateY(-4px)rotate(-2deg)}.auth-category-cards>span:nth-child(3){min-height:220px;transform:translateY(10px)rotate(2deg)}.auth-category-cards>span:nth-child(4){min-height:206px;transform:translateY(20px)rotate(5deg)}.auth-category-cards img{object-fit:cover;object-position:center;border-bottom:1px solid #7cbce82e;width:calc(100% + 28px);height:58%;margin:0 -14px auto;display:block}.auth-category-cards b{color:#f4f7fb;margin-top:11px;font-size:1rem;line-height:1.2}.auth-category-cards small{color:#b9cae1;margin-top:6px;font-size:.7rem;line-height:1.45}.learner-auth-shell .auth-heading h1{font-size:2.35rem}.learner-auth-shell .auth-heading p{font-size:1rem}@media (width<=760px){.learner-auth-topbar{padding:20px 20px 0;display:flex;position:relative;inset:auto}.learner-auth-topbar .auth-wordmark b{font-size:1.55rem}.learner-auth-topbar .auth-wordmark small{font-size:.72rem}.learner-auth-topbar .auth-brand-line,.learner-auth-topbar .auth-language{display:none}.learner-auth-shell .learner-auth-card{margin-top:10px}.auth-category-cards{gap:5px;height:172px;margin-bottom:2px}.auth-category-cards>span{border-radius:11px;width:79px;min-height:126px;padding:0 7px 9px}.auth-category-cards>span:nth-child(2){min-height:150px}.auth-category-cards>span:nth-child(3){min-height:138px}.auth-category-cards>span:nth-child(4){min-height:124px}.auth-category-cards img{width:calc(100% + 14px);height:58%;margin:0 -7px auto}.auth-category-cards b{margin-top:6px;font-size:.75rem}.auth-category-cards small{display:none}}.account-shell.experience-upgrade{isolation:isolate;color:#edf4f5;background:#071724;min-height:100vh;position:relative}.account-shell.experience-upgrade:before{content:"";z-index:-2;background:linear-gradient(#04121fdb,#05141ff0),url(/site-assets/homepage-background.webp) 50%/cover no-repeat;position:fixed;inset:0}.account-shell.experience-upgrade:after{content:"";z-index:-1;pointer-events:none;background:radial-gradient(circle at 75% 14%,#3898cc2e,#0000 27%),radial-gradient(circle at 18% 42%,#deac5e1a,#0000 25%);position:fixed;inset:0}.account-shell.experience-upgrade .learner-header.site-header{background:#05131fcc;border-color:#a6cde221}.account-shell.experience-upgrade .account-page{max-width:1180px;padding-top:44px}.account-shell.experience-upgrade .account-overview{background:linear-gradient(115deg,#0f3048eb,#081f33c7),url(/site-assets/video-view-background.webp) 50% 40%/cover no-repeat;border:1px solid #91c7e533;border-radius:24px;padding:34px 38px;position:relative;overflow:hidden;box-shadow:0 26px 75px #0008144d}.account-shell.experience-upgrade .account-overview:before{content:"";pointer-events:none;background:linear-gradient(90deg,#0000 45%,#3496c51a);position:absolute;inset:0}.account-shell.experience-upgrade .account-overview:after{border:42px solid #68cae012;width:340px;height:340px;display:block;bottom:-190px;right:-92px}.account-shell.experience-upgrade .account-profile-copy>span{color:#72d6e8;letter-spacing:.14em;font-size:.78rem;font-weight:700}.account-shell.experience-upgrade .account-profile-line>i{color:#062039;background:linear-gradient(145deg,#79d9e7,#318fb8);border:1px solid #93dcec5c;border-radius:18px;box-shadow:0 12px 32px #02101d59}.account-shell.experience-upgrade .account-name-display h1{color:#f5f7f7;font-family:var(--ui-font)}.account-shell.experience-upgrade .account-name-display p,.account-shell.experience-upgrade .account-profile-meta,.account-shell.experience-upgrade .account-profile-meta small{color:#afc4d1}.account-shell.experience-upgrade .account-name-display>button,.account-shell.experience-upgrade .account-name-form button{color:#d8e8ee;background:#ffffff12;border-color:#a1cfe340}.account-shell.experience-upgrade .account-name-display>button:hover,.account-shell.experience-upgrade .account-name-form button:hover{background:#6fc8dd21}.account-shell.experience-upgrade .account-name-form input{color:#fff;background:#04132185;border-color:#a1cfe347}.account-shell.experience-upgrade .account-name-form button[type=submit]{color:#062236;background:#6bd1df;border-color:#6bd1df}.account-shell.experience-upgrade .account-profile-meta a,.account-shell.experience-upgrade .account-profile-meta button{color:#c8dbe4}.account-shell.experience-upgrade .account-stat-grid{gap:14px;margin:18px 0 28px}.account-shell.experience-upgrade .account-stat-grid article{background:linear-gradient(145deg,#0f2d40e0,#081d2ed6);border:1px solid #8fbed529;position:relative;overflow:hidden;box-shadow:0 14px 38px #0008122e}.account-shell.experience-upgrade .account-stat-grid article:after{content:"";background:#59c4d70f;border-radius:50%;width:78px;height:78px;position:absolute;top:-28px;right:-24px}.account-shell.experience-upgrade .stat-symbol{color:#7ed7e5;background:#66c7d61c}.account-shell.experience-upgrade .stat-symbol.quiz{color:#e9bf78;background:#e5b8691c}.account-shell.experience-upgrade .stat-symbol.active{color:#82d4ba;background:#75cbb11c}.account-shell.experience-upgrade .account-stat-grid small{color:#9db2be}.account-shell.experience-upgrade .account-stat-grid b{color:#f0f5f5}.account-shell.experience-upgrade .account-stat-grid p{color:#718b99}.account-shell.experience-upgrade .account-history{-webkit-backdrop-filter:blur(18px);background:#071b2bc7;border:1px solid #8fbed529;border-radius:22px;box-shadow:0 24px 66px #00081238}.account-shell.experience-upgrade .account-history>header{border-bottom:0}.account-shell.experience-upgrade .account-history>header span{color:#63cddd;letter-spacing:.15em;font-size:.72rem}.account-shell.experience-upgrade .account-history h2{color:#f2f5f4}.account-shell.experience-upgrade .account-history>header p{color:#8fa6b2}.account-shell.experience-upgrade .account-history-filters{border-color:#97c2d724}.account-shell.experience-upgrade .account-history-filters button{color:#9fb3bd;background:#ffffff0a;border-color:#97c2d72b}.account-shell.experience-upgrade .account-history-filters button[aria-pressed=true]{color:#d9f5f6;background:#4cb2c729;border-color:#68d2e080}.account-shell.experience-upgrade .account-history-list>article{border-color:#97c2d71f}.account-shell.experience-upgrade .account-history-copy>span{color:#e0b977;background:#e0b9771a;border-radius:999px}.account-shell.experience-upgrade .account-history-copy>span.status-complete{color:#79d4b4;background:#53bb961c}.account-shell.experience-upgrade .account-history-copy h3{color:#edf3f3}.account-shell.experience-upgrade .account-history-copy>p,.account-shell.experience-upgrade .account-quiz-record small,.account-shell.experience-upgrade .account-quiz-record span{color:#829ba7}.account-shell.experience-upgrade .account-quiz-record{border-color:#97c2d724}.account-shell.experience-upgrade .account-quiz-record b{color:#e6bd78}.account-shell.experience-upgrade .account-resume{color:#bfeef2;background:#46afc421;border-color:#66d1de47}.account-shell.experience-upgrade .account-resume:hover{background:#46afc438;border-color:#77dce88a}.account-shell.experience-upgrade .account-history-empty>span{color:#79d8e5;background:#54bdcd1c}.account-shell.experience-upgrade .account-history-empty h3{color:#eef4f4}.account-shell.experience-upgrade .account-history-empty p{color:#8da3ae}.account-shell.experience-upgrade .account-history-empty a{color:#062138;background:linear-gradient(90deg,#4ebed2,#76d7df)}.account-shell.experience-upgrade .quiz-review{color:#cbd9dd;border-color:#97c2d721}@media (width<=760px){.account-shell.experience-upgrade:before{background:linear-gradient(#04121fe8,#05141ff7),url(/site-assets/homepage-background.webp) 62%/cover no-repeat}.account-shell.experience-upgrade .learner-header.site-header nav{background:#05131ff5;border-color:#97c2d729}.account-shell.experience-upgrade .account-page{padding-top:18px}.account-shell.experience-upgrade .account-overview{padding:24px 20px}.account-shell.experience-upgrade .account-stat-grid article{padding:14px 8px}.account-shell.experience-upgrade .account-history-list>article{border-color:#97c2d71f}}.knowledge-corner-zone{color:#edf4f6;background:linear-gradient(115deg,#051f2ff5,#092538e6),url(/site-assets/video-view-background.webp) 50%/cover no-repeat;border:1px solid #97c4da30;border-radius:26px;width:min(1180px,100% - 44px);margin:-54px auto 100px;padding:34px 40px 22px;box-shadow:0 30px 86px #0008144d}.knowledge-corner-heading{border-bottom:1px solid #97c4da2b;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;padding-bottom:20px;display:grid}.knowledge-corner-icon{color:#f3db83;background:#e2bd571c;border:1px solid #edcc7057;border-radius:14px;place-items:center;width:48px;height:48px;display:grid}.knowledge-corner-icon svg{width:27px;height:27px}.knowledge-corner-heading>div{align-items:baseline;gap:18px;display:flex}.knowledge-corner-heading h2{font:700 1.7rem/1.3 var(--story-font);letter-spacing:.05em;margin:0}.knowledge-corner-heading p{color:#a7b9c3;margin:0;font-size:.9rem}.knowledge-corner-heading small{color:#7f97a3;letter-spacing:.08em;font-size:.8rem}.knowledge-corner-pages{touch-action:pan-y;display:grid}.knowledge-corner-card{visibility:hidden;opacity:0;pointer-events:none;grid-area:1/1;grid-template-columns:minmax(0,1.08fr) minmax(330px,.92fr);min-height:500px;padding:34px 0 26px;transition:opacity .18s;display:grid}.knowledge-corner-card.is-active{visibility:visible;opacity:1;pointer-events:auto}.knowledge-corner-copy{flex-direction:column;padding:0 38px 0 0;display:flex}.knowledge-corner-copy h3{color:#f5f6f5;font:700 clamp(1.55rem, 2.6vw, 2.3rem)/1.35 var(--story-font);grid-template-columns:auto 1px minmax(0,1fr);align-items:center;gap:16px;margin:0 0 22px;display:grid}.knowledge-corner-copy h3 span{color:#e3bd72;font:700 1.45rem/1 Georgia,serif}.knowledge-corner-copy h3 i{background:#cbdae059;width:1px;height:28px}.knowledge-corner-body p,.knowledge-closing{color:#c5d2d7;font-size:1rem;line-height:1.9}.knowledge-corner-body p{margin:0 0 10px}.knowledge-closing{margin:17px 0 0}.knowledge-highlights{background:#062635b8;border:1px solid #4fcec052;border-radius:14px;margin-top:10px;padding:16px 18px}.knowledge-highlights>b{color:#b6d3d8;margin-bottom:11px;font-size:.88rem;display:block}.knowledge-highlights>div{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.knowledge-highlights span{background:#143e4fbf;border-radius:11px;min-width:0;padding:13px 16px}.knowledge-highlights small,.knowledge-highlights strong{display:block}.knowledge-highlights small{color:#a8bcc4;font-size:.78rem}.knowledge-highlights strong{color:#74d9c3;font:700 clamp(1.35rem, 2.4vw, 2rem)/1.15 Georgia, var(--ui-font);overflow-wrap:anywhere;margin-top:5px}.knowledge-highlights span:nth-child(2) strong{color:#ef9b94}.knowledge-source{color:#8da9b6;align-self:flex-start;margin-top:auto;padding-top:18px;font-size:.78rem;line-height:1.5;text-decoration:none}.knowledge-source:hover{color:#c7e6eb}.knowledge-source span{margin-left:6px}.knowledge-corner-visual{background:#0a263b;border:1px solid #97c4da2b;border-radius:19px;min-height:390px;position:relative;overflow:hidden}.knowledge-corner-visual:after{content:"";pointer-events:none;background:linear-gradient(90deg,#051d2c47,#0000 44%),linear-gradient(#0000 55%,#03131f73);position:absolute;inset:0}.knowledge-corner-visual>img,.knowledge-corner-visual>.cover{object-fit:cover;border-radius:0;width:100%;height:100%;min-height:390px}.knowledge-corner-visual>.cover .cover-symbol{transform:scale(1.35)}.knowledge-corner-visual>span{z-index:2;color:#c8d7dd;background:#0416239e;border:1px solid #ffffff2b;border-radius:999px;padding:7px 10px;font-size:.75rem;position:absolute;bottom:13px;right:14px}.knowledge-corner-nav{border-top:1px solid #97c4da26;grid-template-columns:140px 1fr 140px;align-items:center;gap:20px;padding-top:18px;display:grid}.knowledge-corner-nav>button{color:#c5d8df;cursor:pointer;background:#ffffff0a;border:1px solid #97c4da42;border-radius:999px;min-height:44px}.knowledge-corner-nav>button:last-child{color:#d9f7ed;background:#33a38f2e;border-color:#57cfb461}.knowledge-corner-nav>button span{padding:0 8px;font-size:1.2rem}.knowledge-corner-nav>button:disabled{opacity:.32;cursor:default}.knowledge-corner-nav>div{flex-wrap:wrap;justify-content:center;align-items:center;gap:0;min-width:0;display:flex}.knowledge-corner-nav>div>button{cursor:pointer;background:0 0;border:0;border-radius:12px;place-items:center;width:28px;height:44px;padding:0;display:grid}.knowledge-corner-nav>div>button:after{content:"";border:1px solid #91a8b3;border-radius:50%;width:8px;height:8px}.knowledge-corner-nav>div>button[aria-pressed=true]:after{background:#f5f6f3;border-color:#f5f6f3}.knowledge-corner-nav>div small{color:#8ea2ac;margin-left:7px;font-size:.75rem}.knowledge-edit-form{border:1px solid var(--line);background:#f8faf8;border-radius:16px;margin:24px 0;padding:24px}.knowledge-edit-form h3{font:700 1.25rem/1.4 var(--story-font);margin:0 0 18px}.knowledge-edit-form fieldset{border:0;margin:0;padding:0}.knowledge-edit-form label{color:#5d6b65;margin:13px 0;font-size:.875rem;font-weight:700;display:block}.knowledge-edit-form input,.knowledge-edit-form textarea{border:1px solid var(--line);width:100%;color:var(--ink);background:#fff;border-radius:10px;outline:none;margin-top:7px;padding:11px 12px}.knowledge-edit-form textarea{resize:vertical;line-height:1.65}.knowledge-edit-form input:focus,.knowledge-edit-form textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px #3ba66b1a}.knowledge-edit-form label>small{color:#8b9791;margin-top:5px;font-weight:400;display:block}.knowledge-highlight-fields>div,.knowledge-source-fields{grid-template-columns:1fr 1fr;gap:14px;display:grid}.knowledge-active-field{align-items:center;gap:9px;display:flex!important}.knowledge-active-field input{width:18px;height:18px;margin:0}.knowledge-editor-list{margin:22px 0 0;padding:0;list-style:none}.knowledge-editor-list li{border-bottom:1px solid var(--line);grid-template-columns:46px minmax(0,1fr);gap:14px;padding:17px 0;display:grid}.knowledge-editor-list li>i{width:38px;height:38px;color:var(--green-dark);background:#eef5ef;border-radius:11px;place-items:center;font-style:normal;font-weight:800;display:grid}.knowledge-editor-list b,.knowledge-editor-list small{display:block}.knowledge-editor-list b{font-size:.95rem;line-height:1.5}.knowledge-editor-list small{color:#87938d;margin-top:4px;font-size:.75rem}.knowledge-editor-list .quiz-row-actions{margin-top:10px}@media (width<=800px){.knowledge-corner-zone{border-radius:20px;width:calc(100% - 28px);margin:-70px auto 86px;padding:22px 16px 16px}.knowledge-corner-heading{grid-template-columns:auto 1fr;gap:12px}.knowledge-corner-heading>div{display:block}.knowledge-corner-heading h2{font-size:1.45rem}.knowledge-corner-heading p{margin-top:3px;font-size:.82rem}.knowledge-corner-heading>small{display:none}.knowledge-corner-card{grid-template-columns:1fr;min-height:0;padding:24px 0 18px}.knowledge-corner-copy{padding:0}.knowledge-corner-copy h3{gap:11px;margin-bottom:17px;font-size:1.45rem}.knowledge-corner-copy h3 span{font-size:1.15rem}.knowledge-corner-body p,.knowledge-closing{font-size:.94rem;line-height:1.8}.knowledge-highlights>div{grid-template-columns:1fr 1fr;gap:8px}.knowledge-highlights span{padding:12px 10px}.knowledge-highlights strong{font-size:1.2rem}.knowledge-source{margin:18px 0}.knowledge-corner-visual,.knowledge-corner-visual>img,.knowledge-corner-visual>.cover{min-height:220px}.knowledge-corner-nav{grid-template-columns:48px 1fr 48px;gap:8px}.knowledge-corner-nav>button{width:48px;padding:0;font-size:0}.knowledge-corner-nav>button span{padding:0;font-size:1.55rem;display:inline}.knowledge-corner-nav>div{gap:0}.knowledge-corner-nav>div small{display:none}.knowledge-highlight-fields>div,.knowledge-source-fields{grid-template-columns:1fr;gap:0}.knowledge-edit-form{padding:18px 14px}}@media (prefers-reduced-motion:reduce){.knowledge-corner-zone *{scroll-behavior:auto}.knowledge-corner-card{transition:none}}html{-webkit-text-size-adjust:100%;-moz-text-size-adjust:100%;text-size-adjust:100%}body{text-rendering:optimizelegibility}.experience-upgrade .learner-header.site-header nav a,.experience-upgrade .learner-header.site-header nav button{font-size:.9375rem;line-height:1.35}.experience-upgrade .learner-header .user-signout,.experience-upgrade .learner-header .user-login-link{font-size:.9375rem}.experience-upgrade button,.experience-upgrade a{line-height:1.45}.experience-upgrade .hello-pill{font-size:1rem;line-height:1.6}.experience-upgrade .discovery-intro h1{max-width:820px;line-height:1.2}.experience-upgrade .story-spotlight p{font-size:1.0625rem;line-height:1.75}.experience-upgrade .story-metadata,.experience-upgrade .spotlight-share-link,.experience-upgrade .section-title>p,.experience-upgrade .category-row button,.experience-upgrade .category-row button span{font-size:.9375rem}.experience-upgrade .category-row button small{font-size:.8125rem}.experience-upgrade .lesson-card-copy{padding:23px}.experience-upgrade .lesson-card h3{font-size:1.375rem;line-height:1.45}.experience-upgrade .lesson-card-copy>p{font-size:.9375rem;line-height:1.75}.experience-upgrade .lesson-tags span,.experience-upgrade .lesson-tags small,.experience-upgrade .card-bottom em{font-size:.8125rem}.experience-upgrade .card-bottom button,.experience-upgrade .story-card-share{min-height:42px;font-size:.875rem}.experience-upgrade .curated-path summary{font-size:1rem;line-height:1.5}.experience-upgrade .curated-path summary small{font-size:.8125rem}.experience-upgrade .curated-path li button{font-size:.9375rem;line-height:1.55}.experience-upgrade.screen-lesson .lesson-heading .lesson-tags>span,.experience-upgrade.screen-lesson .lesson-heading .lesson-tags small{font-size:.875rem}.experience-upgrade.screen-lesson .lesson-description{font-size:1.0625rem;line-height:1.85}.experience-upgrade.screen-lesson .lesson-stage-summary>span{font-size:.9375rem;line-height:1.55}.experience-upgrade.screen-lesson .mark-video-button{font-size:.9375rem}.experience-upgrade.screen-lesson .upgraded-quiz{padding:36px}.experience-upgrade.screen-lesson .upgraded-quiz .quiz-head>div>span{font-size:.8125rem}.experience-upgrade.screen-lesson .upgraded-quiz .quiz-head h2{font-size:1.75rem;line-height:1.4}.experience-upgrade.screen-lesson .upgraded-quiz .quiz-head>p,.experience-upgrade.screen-lesson .upgraded-quiz .quiz-count small{font-size:.875rem}.experience-upgrade.screen-lesson .quiz-card h3{font-size:1.5rem;line-height:1.55}.experience-upgrade.screen-lesson .answer-grid button{min-height:64px;padding:14px 16px;font-size:1rem;line-height:1.55}.experience-upgrade.screen-lesson .answer-feedback b{font-size:.9375rem}.experience-upgrade.screen-lesson .answer-feedback p{font-size:.875rem;line-height:1.7}.experience-upgrade.screen-lesson .answer-feedback button,.experience-upgrade.screen-lesson .empty-quiz button,.experience-upgrade.screen-lesson .quiz-complete button{min-height:42px;font-size:.875rem}.experience-upgrade.screen-lesson .empty-quiz p,.experience-upgrade.screen-lesson .quiz-complete p{font-size:.9375rem;line-height:1.7}.experience-upgrade.screen-lesson .lesson-feedback summary{font-size:1.125rem}.experience-upgrade.screen-lesson .lesson-feedback legend,.experience-upgrade.screen-lesson .lesson-feedback label{font-size:.9375rem}.experience-upgrade .next-stories button span,.experience-upgrade .next-stories button small{font-size:.875rem}.knowledge-corner-heading p{font-size:.9375rem;line-height:1.6}.knowledge-corner-heading small{font-size:.8125rem}.knowledge-corner-body p,.knowledge-closing{font-size:1.0625rem;line-height:1.9}.knowledge-highlights>b{font-size:.9375rem}.knowledge-highlights small,.knowledge-source,.knowledge-corner-visual>span,.knowledge-corner-nav>div small{font-size:.8125rem}.knowledge-corner-nav>button{font-size:.9375rem}.account-shell.experience-upgrade .account-profile-copy>span,.account-shell.experience-upgrade .account-profile-identity>small,.account-shell.experience-upgrade .account-primary-stat>small,.account-shell.experience-upgrade .account-primary-stat p,.account-shell.experience-upgrade .account-stat-grid small,.account-shell.experience-upgrade .account-stat-grid p,.account-shell.experience-upgrade .account-history>header span,.account-shell.experience-upgrade .account-history-copy>span,.account-shell.experience-upgrade .account-record-progress small,.account-shell.experience-upgrade .account-quiz-record small,.account-shell.experience-upgrade .account-quiz-record span{font-size:.8125rem;line-height:1.55}.account-shell.experience-upgrade .account-profile-line p,.account-shell.experience-upgrade .account-history>header p,.account-shell.experience-upgrade .account-history-copy>p,.account-shell.experience-upgrade .account-resume{font-size:.875rem;line-height:1.55}.account-shell.experience-upgrade .account-history-copy h3{font-size:1.1875rem}.account-shell.experience-upgrade .account-history>header h2{font-size:1.875rem}.learner-auth-shell .auth-category-cards b{font-size:1.0625rem}.learner-auth-shell .auth-category-cards small{font-size:.78rem;line-height:1.55}.learner-auth-shell .auth-heading p{line-height:1.65}.learner-auth-shell .auth-switch button{font-size:1rem}.learner-auth-shell .auth-method-switch button,.learner-auth-shell .auth-phone-note,.learner-auth-shell .auth-recovery-link,.learner-auth-shell .auth-return{font-size:.875rem;line-height:1.6}.learner-auth-shell .auth-form input,.learner-auth-shell .auth-form select{font-size:1rem;line-height:1.5}.learner-auth-shell .auth-error,.learner-auth-shell .auth-success{font-size:.875rem;line-height:1.6}@media (width<=760px){.experience-upgrade .learner-header.site-header nav a,.experience-upgrade .learner-header.site-header nav button{font-size:.8125rem}.experience-upgrade .discovery-intro{min-height:140px;padding:38px 18px 20px}.experience-upgrade .discovery-intro h1{font-size:2.15rem;line-height:1.25}.experience-upgrade .story-spotlight .spotlight-copy{padding:24px 20px 26px}.experience-upgrade .story-spotlight h2{font-size:1.85rem;line-height:1.35}.experience-upgrade .story-spotlight p{font-size:1rem}.experience-upgrade .story-spotlight .primary-action{width:100%;min-width:0}.experience-upgrade .section-title{align-items:flex-end;gap:16px}.experience-upgrade .section-title h2{font-size:1.65rem;line-height:1.35}.experience-upgrade .section-title>p{font-size:.8125rem}.experience-upgrade .lesson-card-copy{padding:20px}.experience-upgrade .lesson-card h3{font-size:1.3rem}.experience-upgrade .lesson-card-copy>p{font-size:.9375rem}.experience-upgrade.screen-lesson .lesson-heading h1{font-size:2.1rem;line-height:1.3}.experience-upgrade.screen-lesson .lesson-heading .lesson-subtitle{font-size:1.0625rem;line-height:1.7}.experience-upgrade.screen-lesson .lesson-description{font-size:1rem;line-height:1.8}.experience-upgrade.screen-lesson .upgraded-quiz{padding:22px 16px}.experience-upgrade.screen-lesson .upgraded-quiz .quiz-head{align-items:flex-start;gap:12px}.experience-upgrade.screen-lesson .upgraded-quiz .quiz-head h2{font-size:1.45rem}.experience-upgrade.screen-lesson .quiz-card{padding:22px 16px}.experience-upgrade.screen-lesson .quiz-card h3{margin:24px 0 20px;font-size:1.25rem}.experience-upgrade.screen-lesson .answer-grid{grid-template-columns:1fr}.experience-upgrade.screen-lesson .answer-grid button{min-height:58px;font-size:.9375rem}.experience-upgrade.screen-lesson .answer-feedback{flex-direction:column;align-items:flex-start}.experience-upgrade.screen-lesson .answer-feedback button{width:100%}.knowledge-corner-heading p{font-size:.875rem}.knowledge-corner-body p,.knowledge-closing{font-size:1rem;line-height:1.82}.knowledge-highlights small,.knowledge-source{font-size:.8125rem}.account-shell.experience-upgrade .account-overview{gap:20px}.account-shell.experience-upgrade .account-history>header h2{font-size:1.55rem}.account-shell.experience-upgrade .account-history-copy h3{white-space:normal}.learner-auth-shell .learner-auth-card{width:min(560px,100% - 28px)}.learner-auth-shell .auth-heading h1{font-size:2rem;line-height:1.3}.learner-auth-shell .auth-heading p{font-size:.9375rem}}@media (width<=390px){.experience-upgrade .learner-header.site-header{padding-inline:12px}.experience-upgrade .discovery-intro h1{font-size:1.95rem}.learner-auth-shell .auth-category-cards{gap:3px}.learner-auth-shell .auth-category-cards>span{width:74px}}.experience-upgrade.screen-lesson .learning-experience .lesson-hero{margin-bottom:24px}.lesson-flow-guide{-webkit-backdrop-filter:blur(14px);background:#0418288a;border:1px solid #9ec2d22e;border-radius:16px;grid-template-columns:auto minmax(36px,1fr) auto;align-items:center;gap:12px;width:min(1000px,100% - 48px);margin:0 auto 26px;padding:13px 16px;display:grid;box-shadow:inset 0 1px #ffffff08}.lesson-flow-guide.has-knowledge{grid-template-columns:auto minmax(36px,1fr) auto minmax(36px,1fr) auto}.lesson-flow-guide>span{color:#8298a2;align-items:center;gap:9px;min-width:0;display:flex}.lesson-flow-guide>span small{color:#91a5ad;background:#ffffff0a;border:1px solid #9dbecc3d;border-radius:50%;flex:0 0 29px;place-items:center;width:29px;height:29px;font-size:.72rem;display:grid}.lesson-flow-guide>span b{color:inherit;white-space:nowrap;font-size:.875rem;font-weight:600}.lesson-flow-guide>i{background:linear-gradient(90deg,#73b4af29,#73b4af7a,#73b4af29);width:100%;height:1px}.lesson-flow-guide>span.is-current{color:#e8f3ef}.lesson-flow-guide>span.is-current small{color:#dffff7;background:#2d96833d;border-color:#5cd5bf94;box-shadow:0 0 0 4px #46cab20f}.lesson-flow-guide>span.is-complete{color:#a8d8c9}.lesson-flow-guide>span.is-complete small{color:#c9f5e5;background:#2f7e604d;border-color:#68c5a666}.lesson-study-sequence{width:min(1000px,100% - 48px);margin:0 auto 58px}.experience-upgrade.screen-lesson .lesson-study-sequence .upgraded-quiz{border-radius:22px;width:100%;max-width:none;margin:0;padding:32px 34px 36px}.lesson-module-transition{color:#90a8b2;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;min-height:70px;padding:0 22px;display:grid}.lesson-module-transition>span{background:linear-gradient(90deg,#0000,#7fa9b747);height:1px}.lesson-module-transition>span:last-child{background:linear-gradient(90deg,#7fa9b747,#0000)}.lesson-module-transition>b{color:#9fb5bd;letter-spacing:.08em;font-size:.8125rem;font-weight:500}.lesson-study-sequence .knowledge-corner-zone{border-radius:22px;width:100%;max-width:none;margin:0;padding:32px 34px 22px}.experience-upgrade.screen-lesson .lesson-feedback{width:min(1000px,100% - 48px);max-width:none;margin-top:-24px}@media (width<=800px){.experience-upgrade.screen-lesson .learning-experience .lesson-hero{margin-bottom:18px}.lesson-flow-guide,.lesson-study-sequence,.experience-upgrade.screen-lesson .lesson-feedback{width:calc(100% - 28px)}.lesson-flow-guide{grid-template-columns:auto minmax(12px,1fr) auto;gap:7px;margin-bottom:18px;padding:11px 12px}.lesson-flow-guide.has-knowledge{grid-template-columns:auto minmax(12px,1fr) auto minmax(12px,1fr) auto}.lesson-flow-guide>span{text-align:center;flex-direction:column;gap:5px}.lesson-flow-guide>span small{flex-basis:26px;width:26px;height:26px;font-size:.67rem}.lesson-flow-guide>span b{font-size:.75rem}.experience-upgrade.screen-lesson .lesson-study-sequence .upgraded-quiz{border-radius:19px;padding:24px 16px}.lesson-module-transition{gap:10px;min-height:58px;padding:0 8px}.lesson-module-transition>b{letter-spacing:.04em;white-space:nowrap;font-size:.75rem}.lesson-study-sequence .knowledge-corner-zone{border-radius:19px;width:100%;padding:22px 16px 16px}.experience-upgrade.screen-lesson .lesson-feedback{margin-top:-30px}}@media (width<=420px){.lesson-flow-guide{gap:4px;padding-inline:8px}.lesson-flow-guide>span b,.lesson-module-transition>b{font-size:.7rem}}.experience-upgrade .lesson-grid{grid-auto-rows:1fr;align-items:stretch}.experience-upgrade .lesson-card{flex-direction:column;height:100%;display:flex}.experience-upgrade .lesson-card>.story-cover{aspect-ratio:16/9;flex:none;width:100%}.experience-upgrade .lesson-card-copy{flex-direction:column;flex:1;min-width:0;display:flex}.experience-upgrade .lesson-card .lesson-tags{min-height:1.55rem}.experience-upgrade .lesson-card h3{-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;min-height:2.9em;display:-webkit-box;overflow:hidden}.experience-upgrade .lesson-card-copy>p{-webkit-line-clamp:3;line-clamp:3;-webkit-box-orient:vertical;min-height:5.25em;display:-webkit-box;overflow:hidden}.experience-upgrade .lesson-card .card-capabilities{border-top:1px solid #dce3d529;align-items:center;min-height:46px;margin-top:auto;padding:10px 0 8px;display:flex}.experience-upgrade .lesson-card .card-capabilities .story-status{white-space:nowrap;text-overflow:ellipsis;max-width:100%;overflow:hidden}.experience-upgrade .lesson-card .card-bottom{border-top:0;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:14px;min-height:52px;margin-top:0;padding-top:0;display:grid}.experience-upgrade .lesson-card .card-bottom>:is(button,a){min-width:0}.experience-upgrade .lesson-card .card-bottom button{justify-content:flex-start}.experience-upgrade .lesson-card .card-bottom .story-card-share{justify-self:end}@media (width<=760px){.experience-upgrade .lesson-card h3{min-height:3em}.experience-upgrade .lesson-card-copy>p{min-height:4.65em}.experience-upgrade .lesson-card .card-capabilities{min-height:44px}.experience-upgrade .lesson-card .card-bottom{min-height:50px}}.zhiye-v3{--z3-bg:#06111a;--z3-panel:#111a1c;--z3-panel-soft:#151f21;--z3-text:#f4f2e9;--z3-muted:#9ba8a4;--z3-line:#ebefe61f;--z3-accent:#d8c28a;--z3-cta:#e6eadb;background-color:var(--z3-bg);background-image:linear-gradient(#030c14ba 0%,#040e16db 46%,#040c12f0 100%),url(/site-assets/homepage-background.webp);background-position:top;background-size:cover;background-attachment:fixed;min-height:100vh}.zhiye-v3 .z3-page{background:linear-gradient(#0000 0%,#040c122e 48%,#040c1285 100%);min-height:calc(100vh - 76px);padding:0 0 40px}.zhiye-v3 .learner-header.site-header{width:min(1400px,100% - 48px);height:76px;box-shadow:none;-webkit-backdrop-filter:blur(18px)saturate(115%);backdrop-filter:blur(18px)saturate(115%);background:#040d15b8;border:0;border-bottom:1px solid #e7efec1f;border-radius:0;margin:0 auto;padding:0;top:0}.zhiye-v3 .learner-header.site-header:before{display:none}.zhiye-v3 .learner-header .logo{align-content:center;gap:2px;min-width:92px;display:grid}.zhiye-v3 .learner-header .logo>span{display:none}.zhiye-v3 .learner-header .logo b{color:#f4f4ef;letter-spacing:.12em;font:800 1.7rem/.95 Songti SC,serif}.zhiye-v3 .learner-header .logo small{color:#d6deda;letter-spacing:.34em;width:auto;font:700 .56rem/1 Arial,sans-serif;display:block}.zhiye-v3 .learner-header nav{gap:2px;margin-left:28px}.zhiye-v3 .learner-header.site-header nav a{color:#9eaaa7;background:0 0;border:0;border-radius:0;min-width:76px;height:76px;padding:0 17px}.zhiye-v3 .learner-header.site-header nav a svg{display:none}.zhiye-v3 .learner-header.site-header nav a.active{color:#f4f5ef;box-shadow:none;background:0 0;border:0}.zhiye-v3 .learner-header.site-header nav a:after{content:"";background:#e8ece5;border-radius:2px;height:2px;display:block;position:absolute;bottom:0;left:17px;right:17px;transform:scaleX(0)}.zhiye-v3 .learner-header.site-header nav a.active:after{transform:scaleX(1)}.zhiye-v3 .learner-header-user{gap:10px}.zhiye-v3 .z3-header-search{color:#aab5b2;cursor:pointer;background:#ffffff0a;border:1px solid #e3ebe82e;border-radius:999px;align-items:center;gap:10px;width:clamp(160px,20vw,270px);height:40px;padding:0 15px;display:flex}.zhiye-v3 .z3-header-search span{display:none}.zhiye-v3 .z3-header-search:hover{background:#ffffff12;border-color:#ffffff47}.zhiye-v3 .learner-header .user-signout,.zhiye-v3 .learner-header-user:before{display:none}.zhiye-v3 .z3-header-search{border-radius:50%;justify-content:center;width:44px;height:44px;padding:0}.mobile-login-label,.mobile-bottom-nav{display:none}.z3-hero{isolation:isolate;touch-action:pan-y;border:1px solid var(--z3-line);background:#182224;border-radius:20px;align-items:end;width:min(1400px,100% - 48px);height:auto;min-height:clamp(340px,27.5vw,390px);max-height:none;margin:16px auto 0;display:grid;position:relative;overflow:hidden;box-shadow:0 34px 100px #00000057}.z3-hero-media,.z3-hero-shade{position:absolute;inset:0}.z3-hero-media{animation:.9s both z3-hero-media-in}.z3-hero-media .story-cover{width:100%;height:100%}.z3-hero-media .cover-photo{object-fit:cover;object-position:center 43%;width:100%;height:100%}.z3-hero-media .cover-symbol{transform:scale(1.7)}.z3-hero-shade{z-index:1;background:linear-gradient(90deg,#050a0beb 0%,#050a0bad 38%,#050a0b1f 72%),linear-gradient(#0000 45%,#050a0bbd 100%)}.z3-hero-copy{z-index:2;width:min(680px,60%);margin:clamp(28px,3.2vw,44px) clamp(30px,4.8vw,68px);animation:.72s both z3-hero-copy-in;position:relative}.z3-hero-copy>small,.z3-section-heading small,.z3-random small,.z3-explore-heading small,.z3-journey-heading small{color:var(--z3-accent);letter-spacing:.17em;font:700 .75rem/1.2 Arial,sans-serif;display:block}.z3-hero-copy h1{max-width:13em;color:var(--z3-text);letter-spacing:-.035em;text-wrap:balance;margin:12px 0 9px;font:700 clamp(2.1rem,3.35vw,3.25rem)/1.13 Songti SC,STSong,serif}.z3-hero-copy>p{color:#c6cfca;max-width:620px;margin:0;font-size:1rem;line-height:1.6}.z3-hero-meta{color:#aeb9b4;flex-wrap:wrap;align-items:center;gap:8px;margin:14px 0 18px;font-size:.8125rem;display:flex}.z3-hero-meta i{background:#74817c;border-radius:50%;width:3px;height:3px}.z3-primary-cta{color:#101816;background:var(--z3-cta);border-radius:999px;align-items:center;gap:11px;width:fit-content;min-height:48px;padding:11px 19px;font-size:1rem;font-weight:750;text-decoration:none;transition:transform .2s,background .2s;display:inline-flex}.z3-primary-cta:hover{background:#fffdf2;transform:translateY(-2px)}.z3-primary-cta svg:last-child{margin-left:8px}.z3-hero-pagination{z-index:3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#040b0f6b;border:1px solid #ffffff21;border-radius:999px;align-items:center;gap:2px;padding:2px 6px;display:flex;position:absolute;bottom:24px;right:clamp(24px,3.4vw,48px)}.z3-hero-pagination button{color:#f0f1e9;cursor:pointer;background:0 0;border:0;border-radius:999px;place-items:center;width:32px;height:44px;padding:0;display:grid}.z3-hero-pagination button span{background:#eef1e866;border-radius:50%;width:6px;height:6px;transition:width .25s,background .25s}.z3-hero-pagination button.active span{background:#f0f1e9;border-radius:999px;width:18px}.z3-hero-pagination button.active{width:32px}.z3-hero-pagination button:hover{background:#ffffff1a}.z3-hero-pagination .z3-hero-step{width:44px;font-size:1.75rem}@keyframes z3-hero-media-in{0%{opacity:.22;transform:scale(1.018)}to{opacity:1;transform:scale(1)}}@keyframes z3-hero-copy-in{0%{opacity:0;transform:translateY(9px)}to{opacity:1;transform:translateY(0)}}.z3-section{width:min(1400px,100% - 48px);margin:54px auto 0}.z3-experiences{margin-top:38px}.z3-section-heading{justify-content:space-between;align-items:end;gap:28px;margin-bottom:28px;display:flex}.z3-section-heading h2,.z3-random h2,.z3-explore-heading h1,.z3-journey-heading h2{color:var(--z3-text);letter-spacing:-.02em;margin:10px 0 0;font:700 clamp(1.8rem,3vw,2.65rem)/1.25 Songti SC,STSong,serif}.z3-section-heading>p{max-width:430px;color:var(--z3-muted);text-align:right;margin:0;font-size:.9375rem;line-height:1.7}.z3-section-heading>button,.z3-explore-more button{color:#c9d2cc;cursor:pointer;background:0 0;border:0;align-items:center;gap:8px;font-size:.9375rem;display:inline-flex}.z3-experience-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;display:grid}.z3-experience-card{isolation:isolate;color:#f4f3eb;text-align:left;cursor:pointer;background:#1c292b 50%/cover no-repeat;border:0;border-radius:14px;flex-direction:column;justify-content:space-between;align-items:flex-start;min-height:250px;padding:24px;transition:transform .22s,box-shadow .22s;display:flex;position:relative;overflow:hidden;box-shadow:inset 0 0 0 1px #ffffff17}.z3-experience-card:before{content:"";z-index:-2;background:inherit;transition:transform .4s;position:absolute;inset:0}.z3-experience-card:after{content:"";z-index:-1;background:linear-gradient(#050a0b2e,#050a0be6);position:absolute;inset:0}.z3-experience-card.experience-mystery{background-image:url(/site-assets/experience-mystery.webp);background-position:50%}.z3-experience-card.experience-decision{background-image:url(/site-assets/experience-decision.webp);background-position:58%}.z3-experience-card.experience-story{background-image:url(/site-assets/experience-moment.webp);background-position:50%}.z3-experience-card.experience-challenge{background-image:url(/site-assets/experience-challenge.webp);background-position:66%}.z3-experience-card:hover{transform:translateY(-4px);box-shadow:inset 0 0 0 1px #ffffff2e,0 22px 50px #00000042}.z3-experience-card:hover:before{transform:scale(1.035)}.z3-experience-card>small{color:#d7c28f;letter-spacing:.14em;font:700 .75rem Arial,sans-serif}.z3-experience-card>span{margin-top:auto}.z3-experience-card b,.z3-experience-card em{display:block}.z3-experience-card b{font:700 1.35rem/1.4 Songti SC,serif}.z3-experience-card em{color:#b9c3be;margin-top:7px;font-size:.875rem;font-style:normal;line-height:1.5}.z3-experience-card>svg{width:22px;position:absolute;bottom:23px;right:22px}.z3-story-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;display:grid}.z3-story-card{min-width:0;box-shadow:inset 0 0 0 1px var(--z3-line),0 16px 38px #00000024;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0711188f;border-radius:14px;transition:transform .22s,background .22s;overflow:hidden}.z3-story-card:hover{background:#ffffff12;transform:translateY(-5px)}.z3-story-card>a{height:100%;color:inherit;grid-template-rows:auto 1fr;text-decoration:none;display:grid}.z3-story-card .story-cover{aspect-ratio:16/9;height:auto}.z3-story-card .cover-photo{object-fit:cover;width:100%;height:100%}.z3-story-card-copy{flex-direction:column;min-height:158px;padding:17px 18px;display:flex}.z3-story-card-copy>p{color:#97a49f;margin:0;font-size:.8125rem;line-height:1.45}.z3-story-card-copy h3{color:#efeee7;letter-spacing:-.01em;margin:10px 0 17px;font:700 1.12rem/1.48 Songti SC,serif}.z3-story-card-copy>div{color:#c9d2cc;justify-content:space-between;align-items:center;margin-top:auto;font-size:.875rem;display:flex}.z3-story-card-copy>div svg{width:19px;transition:transform .2s}.z3-story-card:hover .z3-story-card-copy>div svg{transform:translate(4px)}.z3-latest .z3-story-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.z3-future-card{cursor:default}.z3-future-card:hover{transform:translateY(-3px)}.z3-future-card-inner{grid-template-rows:auto 1fr;height:100%;display:grid}.z3-future-cover{aspect-ratio:16/9;background:#162329;position:relative;overflow:hidden}.z3-future-cover:after{content:"";background:linear-gradient(#0000 50%,#040b1070);position:absolute;inset:0}.z3-future-cover img{object-fit:cover;width:100%;height:100%;transition:transform .45s;display:block}.z3-future-card:hover .z3-future-cover img{transform:scale(1.025)}.z3-future-cover span{z-index:1;color:#eff0e9;-webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);background:#050d1294;border:1px solid #ffffff36;border-radius:999px;padding:6px 9px;font-size:.75rem;font-weight:700;position:absolute;top:13px;left:13px}.z3-future-card .z3-story-card-copy>div small{color:#788580;letter-spacing:.1em;font-size:.68rem}.z3-random{width:min(1400px,100% - 48px);min-height:190px;box-shadow:inset 0 0 0 1px var(--z3-line);background:linear-gradient(90deg,#050f17f5 0%,#05111ac7 55%,#0510184d 100%),url(/site-assets/homepage-background.webp) 50% 58%/cover no-repeat;border-radius:18px;justify-content:space-between;align-items:center;gap:40px;margin:58px auto 0;padding:clamp(30px,5vw,62px);display:flex}.z3-random p{color:#aab6b0;margin:10px 0 0;font-size:1rem}.z3-random>button{color:#111a17;cursor:pointer;background:#e3e7d8;border:0;border-radius:999px;flex:none;align-items:center;gap:14px;min-height:54px;padding:14px 22px;font-size:1rem;font-weight:750;display:inline-flex}.z3-explore-more{border-top:1px solid var(--z3-line);border-bottom:1px solid var(--z3-line);justify-content:space-between;align-items:center;gap:30px;width:min(1400px,100% - 48px);margin:58px auto 0;padding:36px 0;display:flex}.z3-explore-more p{color:#d7dcd4;max-width:620px;margin:0;font:700 clamp(1.35rem,2.5vw,2rem)/1.5 Songti SC,serif}.z3-brand-line{color:#707d78;justify-content:space-between;align-items:baseline;gap:24px;width:min(1400px,100% - 48px);margin:0 auto;padding:34px 0 4px;display:flex}.z3-brand-line span{color:#b8c1bb;letter-spacing:.08em;font:700 1.15rem Songti SC,serif}.z3-brand-line p{letter-spacing:.06em;margin:0;font-size:.75rem}.zhiye-v3 .z3-explore-section{background:0 0;border:0;width:min(1320px,100% - 48px);margin:0 auto;padding:70px 0 110px}.z3-explore-heading{max-width:760px}.z3-explore-heading h1{font-size:clamp(2.7rem,5vw,4.6rem)}.z3-explore-heading p{color:#98a59f;margin:14px 0 0;font-size:1rem;line-height:1.75}.z3-search-row{grid-template-columns:minmax(0,1fr) auto;align-items:stretch;gap:14px;margin:38px 0 58px;display:grid}.z3-search{border:1px solid var(--z3-line);color:#aeb9b3;cursor:text;background:#ffffff0d;border-radius:16px;grid-template-columns:24px minmax(0,1fr) auto;align-items:center;column-gap:10px;min-height:60px;padding:6px 14px;display:grid}.z3-search:focus-within{border-color:#e0d6b78c;box-shadow:0 0 0 3px #d0bf8e17}.z3-search>svg{align-self:center;width:22px}.z3-search input{color:#eff0e9;background:0 0;border:0;outline:0;width:100%;min-width:0;min-height:44px;font-size:1rem}.z3-search input::placeholder{color:#a4b1ac}.z3-search input::-webkit-search-cancel-button{display:none}.z3-search>button{color:#e5e7df;cursor:pointer;background:0 0;border:0;border-radius:50%;width:44px;height:44px;padding:0;font-size:1.5rem}.z3-results-summary{color:#aeb9b4;margin:10px 0 0;font-size:.875rem;line-height:1.5}.zhiye-v3 button:disabled{opacity:.5;cursor:not-allowed}.zhiye-v3 :is(a,button,input):focus-visible{outline-offset:4px;outline:3px solid #dbc083}.zhiye-v3 .z3-search input:focus-visible{outline:0}.account-signout-error{color:#ffd3bd;background:#412b28;border:1px solid #ba7363;border-radius:12px;padding:14px 18px}.z3-random-light{border:1px solid var(--z3-line);color:#cbd3ce;cursor:pointer;background:#ffffff08;border-radius:16px;justify-content:space-between;align-items:center;gap:16px;min-width:230px;padding:0 20px;display:flex}.z3-random-light:hover{color:#f0f1e9;background:#ffffff0f;border-color:#e7ebe247}.z3-random-light svg{width:19px}.z3-subject-section{margin:0 0 42px}.z3-filter-heading{justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px;display:flex}.z3-filter-heading small,.z3-results-line small,.z3-change-direction small{color:#d2bd88;letter-spacing:.13em;font-size:.75rem;font-weight:750}.z3-filter-heading h2{color:#e8e9e2;margin:7px 0 0;font:700 clamp(1.6rem,2.5vw,2.2rem)/1.25 Songti SC,serif}.z3-filter-heading>button{color:#aeb8b3;cursor:pointer;background:0 0;border:0}.z3-subject-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.z3-subject-grid>button{isolation:isolate;text-align:left;border:1px solid var(--z3-line);color:#e7e9e2;cursor:pointer;background:#182226;border-radius:18px;flex-direction:column;align-items:flex-start;min-height:210px;padding:22px;display:flex;position:relative;overflow:hidden}.z3-subject-grid>button:before{content:"";z-index:-2;background:var(--subject-image) center/cover;opacity:.58;transition:transform .3s,opacity .3s;position:absolute;inset:0}.z3-subject-grid>button:after{content:"";z-index:-1;background:linear-gradient(#060d0f3d 18%,#050b0df0);position:absolute;inset:0}.z3-subject-grid>button:hover:before,.z3-subject-grid>button.active:before{opacity:.72;transform:scale(1.035)}.z3-subject-grid>button.active{border-color:#e3d7b1ad;box-shadow:inset 0 0 0 2px #e3d7b124}.z3-subject-grid>button>span{justify-content:space-between;align-items:center;width:100%;display:flex}.z3-subject-grid i{background:#050c0e8c;border-radius:50%;place-items:center;width:30px;height:30px;display:grid}.z3-subject-grid i svg{width:16px}.z3-subject-grid small{color:#ccd3cf;font-size:.8125rem}.z3-subject-grid b{margin-top:auto;font:700 1.55rem/1.25 Songti SC,serif}.z3-subject-grid em{color:#aab5b0;margin-top:7px;font-size:.8125rem;font-style:normal}.z3-subject-grid>button>svg{width:20px;position:absolute;bottom:24px;right:20px}.z3-experience-filter-block{border-top:1px solid var(--z3-line);border-bottom:1px solid var(--z3-line);padding:24px 0 28px}.z3-experience-filter-block>span{color:#8f9c97;margin-bottom:13px;font-size:.8125rem;display:block}.z3-experience-filters{flex-wrap:wrap;gap:9px;display:flex}.z3-experience-filters button{border:1px solid var(--z3-line);color:#aeb9b4;cursor:pointer;min-height:42px;box-shadow:none;white-space:nowrap;background:#ffffff09;border-radius:999px;padding:10px 15px;font-size:.875rem}.z3-experience-filters button.active{color:#121a17;background:#dfe4d7;border-color:#dfe4d7}.z3-results-line{justify-content:space-between;align-items:end;gap:18px;margin:56px 0 22px;display:flex}.z3-results-line h2{color:#dfe3db;margin:7px 0 0;font:700 1.65rem Songti SC,serif}.z3-results-line h2 span{color:#7d8b85;font:500 .95rem var(--ui-font);margin-left:7px}.z3-results-line button{color:#aeb8b3;cursor:pointer;background:0 0;border:0}.z3-all-stories{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}.z3-story-result-group>h3{color:#dfe3db;margin:0 0 18px;font:700 1.15rem/1.4 Songti SC,serif}.z3-story-result-group>h3 span{color:#8f9b96;font:500 .85rem var(--ui-font);margin-left:6px}.z3-upcoming-stories{border-top:1px solid var(--z3-line);margin-top:34px}.z3-upcoming-stories summary{color:#d8ded8;cursor:pointer;justify-content:space-between;align-items:center;gap:16px;min-height:64px;padding:14px 2px;list-style:none;display:flex}.z3-upcoming-stories summary::-webkit-details-marker{display:none}.z3-upcoming-stories summary span{font:700 1.12rem/1.4 Songti SC,serif}.z3-upcoming-stories summary b{color:#8f9b96;font:500 .85rem var(--ui-font);margin-left:6px}.z3-upcoming-stories summary small{color:#a9b4af;font-size:.8125rem}.z3-upcoming-stories[open] summary{margin-bottom:18px}.experience-filter-toggle{display:none}.z3-explore-story-card{border:1px solid var(--z3-line);background:#091216a6;border-radius:16px;min-width:0;overflow:hidden}.z3-explore-story-card>a{height:100%;color:inherit;grid-template-rows:auto 1fr;text-decoration:none;display:grid}.z3-explore-story-card .story-cover{aspect-ratio:16/9;height:auto}.z3-explore-story-card .cover-photo{object-fit:cover;width:100%;height:100%}.z3-explore-story-copy{flex-direction:column;min-height:260px;padding:19px;display:flex}.z3-experience-badge{color:#cfbf96;background:#ffffff0a;border:1px solid #dee2d824;border-radius:999px;align-self:flex-start;padding:5px 8px;font-size:.75rem}.z3-explore-story-copy h3{color:#eff0e9;margin:13px 0 8px;font:700 1.2rem/1.48 Songti SC,serif}.z3-explore-story-copy>p{color:#929f99;-webkit-line-clamp:2;-webkit-box-orient:vertical;min-height:46px;margin:0;font-size:.875rem;line-height:1.65;display:-webkit-box;overflow:hidden}.z3-explore-card-meta{color:#7f8d87;flex-wrap:wrap;align-items:center;gap:7px;margin:16px 0 14px;font-size:.8rem;display:flex}.z3-explore-card-meta i{background:#596660;border-radius:50%;width:3px;height:3px}.z3-explore-card-action{border-top:1px solid var(--z3-line);color:#c9d0cc;justify-content:space-between;align-items:center;margin-top:auto;padding-top:13px;font-size:.875rem;display:flex}.z3-explore-card-action svg{width:18px}.z3-change-direction{border:1px solid var(--z3-line);background:linear-gradient(115deg,#42514c3d,#0b1316b8);border-radius:20px;grid-template-columns:minmax(0,1fr) minmax(320px,.8fr);align-items:center;gap:48px;margin-top:72px;padding:32px;display:grid}.z3-change-direction h2{color:#ecece5;margin:8px 0;font:700 1.8rem Songti SC,serif}.z3-change-direction p{color:#98a59f;max-width:570px;margin:0;line-height:1.7}.z3-change-direction>a{border-left:1px solid var(--z3-line);color:inherit;flex-direction:column;padding-left:28px;text-decoration:none;display:flex}.z3-change-direction>a span{color:#8f9c97;font-size:.8125rem}.z3-change-direction>a b{color:#e6e8e1;margin:9px 0 16px;font:700 1.12rem/1.5 Songti SC,serif}.z3-change-direction>a em{color:#cfc091;justify-content:space-between;align-items:center;font-size:.82rem;font-style:normal;display:flex}.z3-change-direction>a svg{width:18px}.story-share-shell{--z3-text:#f4f2e9;--z3-muted:#9ba8a4;--z3-line:#ebefe61f;--z3-accent:#d8c28a;min-height:100vh;color:var(--z3-text);background:radial-gradient(circle at 78% -10%,#4a675e33,#0000 38%),#091011;padding-bottom:44px}.story-share-topbar{width:min(1400px,100%);max-width:none;min-height:76px;padding:14px 24px}.story-share-brand{color:#f1f0e9}.story-share-brand>span{color:#172019;background:#d3c089}.story-share-brand small{color:#77847f}.story-share-topbar>a:last-child{color:#b9c3be}.story-share-card.z3-detail-hero{isolation:isolate;border:1px solid var(--z3-line);background:#172224;border-radius:30px;grid-template-columns:minmax(0,1fr);align-items:end;width:min(1400px,100% - 48px);height:auto;min-height:620px;margin:18px auto 0;display:grid;position:relative;overflow:hidden;box-shadow:0 32px 100px #00000059}.z3-detail-hero .story-share-cover,.z3-detail-hero .story-share-cover .story-cover{width:100%;height:100%;min-height:0;position:absolute;inset:0}.z3-detail-hero .story-share-cover .cover-photo{object-fit:cover;object-position:center 42%;width:100%;height:100%}.z3-detail-hero .story-share-cover .cover-symbol{transform:scale(1.7)}.z3-detail-shade{z-index:1;background:linear-gradient(90deg,#05090af0 0%,#05090ab0 43%,#05090a1a 78%),linear-gradient(#0000 42%,#05090acc);position:absolute;inset:0}.z3-detail-hero .story-share-copy{z-index:2;width:min(700px,58%);margin:clamp(34px,6vw,78px) clamp(30px,6vw,86px);padding:0;position:relative}.story-share-kicker span,.story-share-kicker small{color:#d8c28a;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#0f18198f;border:1px solid #e6ebe129}.z3-detail-hero .story-share-copy h1{color:#f4f2e9;letter-spacing:-.04em;max-width:13em;margin:18px 0 12px;font-size:clamp(2.5rem,5vw,4.6rem);line-height:1.15}.z3-detail-hero .story-share-subtitle{color:#c8d0cc;font-size:1.125rem}.z3-detail-hero .story-share-meta{gap:6px;margin:20px 0}.z3-detail-hero .story-share-meta span{color:#aeb9b4;background:0 0;border:0;padding:0}.z3-detail-hero .story-share-meta span:not(:last-child):after{content:"·";color:#67736f;margin-left:7px}.z3-detail-hero .story-share-description{color:#b6c0bb;max-width:650px;margin-bottom:24px;font-size:1rem;line-height:1.75}.story-share-primary,.story-save-button,.story-share-actions button{border-radius:999px;min-height:50px;padding:12px 18px}.story-share-primary{color:#111917;background:#e4e8dc;border-color:#e4e8dc}.story-share-primary.is-pending{color:#c5cec8;cursor:default;background:#0c14158a;border-color:#ecf0e62e}.story-save-button,.story-share-actions button{color:#e0e4dd;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);cursor:pointer;background:#0c141575;border:1px solid #ecf0e638;font-size:.9375rem;font-weight:700}.story-save-button.is-saved{color:#151d1a;background:#c8d5c2}.z3-detail-hero .story-share-account-note{color:#818e89}.z3-journey{width:min(1200px,100% - 48px);margin:92px auto 34px}.z3-journey-heading{max-width:580px}.z3-journey-heading p{color:#929f99;margin:12px 0 0;line-height:1.65}.z3-journey ol{grid-template-columns:repeat(5,minmax(0,1fr));margin:42px 0 0;padding:0;list-style:none;display:grid}.z3-journey li{border-top:1px solid #ecf0e62e;min-height:120px;padding:0 18px 0 0;position:relative}.z3-journey li:before{content:"";background:#d2bc84;border-radius:50%;width:7px;height:7px;position:absolute;top:-4px;left:0}.z3-journey li small,.z3-journey li span{display:block}.z3-journey li small{color:#7b8983;margin-top:19px;font-size:.75rem}.z3-journey li span{color:#dce1d9;margin-top:10px;font:700 1.05rem Songti SC,serif}.z3-interaction-note{flex-wrap:wrap;gap:10px;margin-top:18px;display:flex}.z3-interaction-note span{border:1px solid var(--z3-line);color:#aab6b0;border-radius:999px;padding:8px 11px;font-size:.8125rem}.story-share-footer{border-top:1px solid var(--z3-line);color:#74817b;width:min(1200px,100% - 48px);padding:30px 0 8px}.story-share-footer b{color:#bcc5bf}.story-share-missing{background:#091011}.story-share-missing>section{color:#e9ece4;border-color:var(--z3-line);background:#141e20}.story-share-missing p{color:#a0ada7}@media (width<=1080px){.zhiye-v3 .learner-header-user:before{display:none}.zhiye-v3 .z3-header-search{width:200px}.z3-experience-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.z3-experience-card{min-height:230px}.z3-story-grid,.z3-latest .z3-story-grid,.z3-all-stories{grid-template-columns:repeat(2,minmax(0,1fr))}.z3-subject-grid{scrollbar-width:none;grid-template-columns:repeat(3,minmax(220px,1fr));overflow-x:auto}}@media (width<=900px){.zhiye-v3 .z3-page{padding-bottom:calc(82px + env(safe-area-inset-bottom))}.zhiye-v3 .learner-header.site-header{width:100%;height:calc(62px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 14px 0;z-index:90;background:#040d15f0;border-bottom:1px solid #e7efec1a;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:10px;margin:0;display:grid}.zhiye-v3 .learner-header.site-header .desktop-header-nav{display:none!important}.zhiye-v3 .learner-header .brand-button{min-width:0;display:block}.zhiye-v3 .learner-header .logo{width:auto;min-width:0}.zhiye-v3 .learner-header .logo b{letter-spacing:.09em;font-size:1.4rem}.zhiye-v3 .learner-header .logo small{display:none}.zhiye-v3 .learner-header-user{justify-self:end;gap:6px;min-width:0;margin-left:0}.zhiye-v3 .learner-header-user:before{display:none}.zhiye-v3 .z3-header-search{background:0 0;border:0;border-radius:50%;justify-content:center;width:44px;height:44px;padding:0}.zhiye-v3 .z3-header-search span{display:none}.zhiye-v3 .learner-header .avatar{width:44px;height:44px}.zhiye-v3 .learner-header .user-login-link{color:#e4e8e1;white-space:nowrap;background:#ffffff0f;border-color:#e7efec33;border-radius:999px;align-items:center;min-height:44px;padding:0 11px;display:inline-flex}.zhiye-v3 .learner-header .desktop-login-label{display:none}.zhiye-v3 .learner-header .mobile-login-label{display:inline}.zhiye-v3 .mobile-bottom-nav{z-index:120;width:100%;height:calc(66px + env(safe-area-inset-bottom));padding:5px 8px calc(5px + env(safe-area-inset-bottom));-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#040d15fa;border-top:1px solid #e7efec1f;align-items:stretch;bottom:0;left:0;right:0;box-shadow:0 -12px 34px #00000040;display:flex!important;position:fixed!important;top:auto!important}.zhiye-v3 .mobile-bottom-nav a{color:#899693;border-radius:10px;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:3px;min-width:0;min-height:56px;padding:5px 4px;font-size:.875rem;text-decoration:none;display:flex;position:relative}.zhiye-v3 .mobile-bottom-nav a svg{width:21px;height:21px}.zhiye-v3 .mobile-bottom-nav a.active{color:#f3f4ed}.zhiye-v3 .mobile-bottom-nav a.active:after{content:"";background:#e8ece5;border-radius:999px;height:2px;position:absolute;top:-5px;left:28%;right:28%}.zhiye-v3.screen-lesson{padding-bottom:calc(84px + env(safe-area-inset-bottom))}.zhiye-v3.account-shell .account-page{padding-bottom:calc(100px + env(safe-area-inset-bottom))}}@media (width<=760px){.zhiye-v3{background-position:61% 0;background-attachment:scroll}.zhiye-v3 .z3-page{min-height:100vh;padding-bottom:calc(78px + env(safe-area-inset-bottom))}.z3-hero{border:1px solid var(--z3-line);border-radius:18px;width:calc(100% - 24px);height:auto;min-height:clamp(440px,58svh,520px);max-height:none;margin:10px auto 0}.z3-hero-media .cover-photo{object-position:center 34%}.z3-hero-shade{background:linear-gradient(#0710110a 0%,#07101159 35%,#071011f0 75%,#071011 96%)}.z3-hero-copy{width:auto;margin:100px 20px 22px}.z3-hero-copy h1{max-width:15em;margin:10px 0 7px;font-size:clamp(1.85rem,8.5vw,2.3rem);line-height:1.18}.z3-hero-copy>p{-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:.9375rem;line-height:1.58;display:-webkit-box;overflow:hidden}.z3-hero-meta{gap:6px;margin:11px 0 14px;font-size:.75rem}.z3-primary-cta{min-height:48px;padding:11px 17px;font-size:.9375rem}.z3-hero-pagination{padding:2px 4px;top:12px;bottom:auto;right:12px}.z3-hero-pagination button,.z3-hero-pagination button.active{width:44px}.z3-hero-pagination .z3-hero-step{display:none}.z3-section{width:calc(100% - 32px);margin-top:42px}.z3-experiences{margin-top:34px}.z3-section-heading{margin-bottom:21px;display:block}.z3-section-heading h2{font-size:1.75rem}.z3-section-heading>p{text-align:left;margin-top:10px;font-size:.875rem}.z3-section-heading>button{margin-top:12px;padding:0}.z3-experiences{width:100%}.z3-experiences .z3-section-heading{padding:0 16px}.z3-experience-grid{scroll-snap-type:x mandatory;scrollbar-width:none;gap:12px;padding:0 16px 6px;display:flex;overflow-x:auto}.z3-experience-grid::-webkit-scrollbar{display:none}.z3-experience-card{scroll-snap-align:start;width:132px;min-width:132px;min-height:154px;padding:16px}.z3-experience-card>small{font-size:.65rem}.z3-experience-card b{max-width:5em;font-size:1.02rem}.z3-experience-card em{display:none}.z3-experience-card>svg{width:18px;bottom:14px;right:14px}.z3-story-grid{scroll-snap-type:x mandatory;scrollbar-width:none;gap:12px;padding:0 0 6px;display:flex;overflow-x:auto}.z3-story-grid::-webkit-scrollbar{display:none}.z3-story-grid .z3-story-card{scroll-snap-align:start;width:min(82vw,330px);min-width:min(82vw,330px)}.z3-story-grid,.z3-latest .z3-story-grid,.z3-all-stories{grid-template-columns:minmax(0,1fr);gap:18px}.z3-story-card-copy{min-height:166px;padding:18px}.z3-story-card-copy h3{margin-bottom:18px;font-size:1.22rem}.z3-random{flex-direction:column;justify-content:space-between;align-items:flex-start;width:calc(100% - 32px);min-height:220px;margin-top:46px;padding:26px 22px}.z3-random h2{font-size:1.8rem}.z3-random>button{justify-content:space-between;width:100%}.z3-explore-more{flex-direction:column;align-items:flex-start;width:calc(100% - 32px);margin-top:62px;padding:32px 0}.z3-brand-line{flex-direction:column;align-items:flex-start;width:calc(100% - 32px);padding-bottom:12px}.z3-brand-line p{line-height:1.6}.zhiye-v3 .z3-explore-section{width:calc(100% - 32px);padding:42px 0 calc(100px + env(safe-area-inset-bottom))}.z3-explore-heading h1{font-size:2.8rem}.z3-search-row{grid-template-columns:minmax(0,1fr);margin:28px 0 42px}.z3-search{min-height:58px}.z3-random-light{min-width:0;min-height:48px}.z3-filter-heading{align-items:flex-start}.z3-filter-heading h2{font-size:1.7rem}.z3-subject-grid{scroll-snap-type:x mandatory;scrollbar-width:none;grid-template-columns:none;grid-auto-columns:min(78vw,290px);grid-auto-flow:column;gap:12px;width:calc(100% + 16px);padding-right:16px;overflow-x:auto}.z3-subject-grid>button{scroll-snap-align:start;min-height:188px}.z3-experience-filter-block{margin-top:32px}.experience-filter-toggle{color:#d7dfda;width:100%;min-height:48px;font:600 .9375rem/1.4 var(--ui-font);background:0 0;border:0;border-top:1px solid #e1ede51f;justify-content:space-between;align-items:center;padding:10px 0;display:flex}.experience-filter-row{display:none}.experience-filter-row.is-open{display:grid}.z3-experience-filters{scrollbar-width:none;flex-wrap:nowrap;width:calc(100% + 16px);padding-right:16px;overflow-x:auto}.z3-experience-filters button{flex:none}.z3-results-line{margin-top:40px}.z3-all-stories{grid-template-columns:minmax(0,1fr);gap:16px}.z3-upcoming-stories{margin-top:28px}.z3-upcoming-stories summary{min-height:58px}.z3-explore-story-copy{min-height:245px}.z3-change-direction{grid-template-columns:minmax(0,1fr);gap:24px;margin-top:52px;padding:24px 20px}.z3-change-direction>a{border-top:1px solid var(--z3-line);border-left:0;padding:20px 0 0}.story-share-topbar{min-height:64px;padding:11px 16px}.story-share-card.z3-detail-hero{border:0;border-radius:0 0 24px 24px;width:100%;height:auto;min-height:680px;margin:0}.z3-detail-hero .story-share-cover .cover-photo{object-position:center 28%}.z3-detail-shade{background:linear-gradient(#0000 0%,#07101157 31%,#071011f5 69%,#071011 95%)}.z3-detail-hero .story-share-copy{width:auto;margin:200px 20px 28px}.z3-detail-hero .story-share-copy h1{margin:13px 0 8px;font-size:clamp(2rem,9vw,2.7rem);line-height:1.17}.z3-detail-hero .story-share-subtitle{font-size:.9375rem;line-height:1.55}.z3-detail-hero .story-share-meta{margin:14px 0;font-size:.75rem}.z3-detail-hero .story-share-description{-webkit-line-clamp:3;-webkit-box-orient:vertical;margin-bottom:17px;font-size:.875rem;line-height:1.55;display:-webkit-box;overflow:hidden}.z3-detail-hero .story-share-cta{grid-template-columns:1fr 1fr;gap:8px;display:grid}.z3-detail-hero .story-share-primary{grid-column:1/-1;width:100%}.z3-detail-hero .story-save-button,.z3-detail-hero .story-share-actions,.z3-detail-hero .story-share-actions button{width:100%}.z3-detail-hero .story-share-account-note{margin-top:10px;font-size:.8125rem;line-height:1.6}.z3-journey{width:calc(100% - 32px);margin:62px auto 24px}.z3-journey ol{grid-template-columns:1fr;margin-top:32px}.z3-journey li{border-top:0;border-left:1px solid #ecf0e62e;min-height:0;padding:0 0 24px 38px}.z3-journey li:before{top:0;left:-4px}.z3-journey li small{margin-top:-2px}.z3-journey li span{margin-top:5px}.story-share-footer{width:calc(100% - 32px);padding-bottom:calc(16px + env(safe-area-inset-bottom))}}@media (width<=390px){.zhiye-v3 .learner-header.site-header{padding-inline:12px}.zhiye-v3 .learner-header .logo b{font-size:1.28rem}.zhiye-v3 .z3-header-search{width:44px;height:44px}.zhiye-v3 .learner-header .user-login-link{min-height:44px;padding-inline:10px}.z3-hero-meta span:nth-of-type(2),.z3-detail-hero .story-share-meta span:nth-child(2),.z3-hero-meta i:first-of-type,.z3-detail-hero .story-share-meta span:first-child:after{display:none}}@media (prefers-reduced-motion:reduce){.z3-hero-media,.z3-hero-copy{animation:none}.z3-experience-card,.z3-experience-card:before,.z3-story-card,.z3-primary-cta,.z3-hero-pagination button span{transition:none}}.zhiye-v3.experience-upgrade .z3-primary-cta{color:#101816;background:#e6eadb;border:1px solid #f3f0df;box-shadow:0 8px 24px #00000042}.zhiye-v3.experience-upgrade .z3-primary-cta:hover,.zhiye-v3.experience-upgrade .z3-primary-cta:focus-visible{color:#101816;background:#fffdf2}.zhiye-v3.experience-upgrade .z3-random>button{color:#111a17;background:#e3e7d8;border:1px solid #f0eddc;box-shadow:0 8px 24px #00000038}.zhiye-v3.experience-upgrade .z3-section-heading>button,.zhiye-v3.experience-upgrade .z3-explore-more button,.zhiye-v3.experience-upgrade .z3-filter-heading>button,.zhiye-v3.experience-upgrade .z3-results-line button{color:#edf0e9;background:#ffffff12;border:1px solid #e9eee53d;border-radius:999px;min-height:42px;padding:9px 14px;font-size:.875rem;font-weight:700;text-decoration:none;box-shadow:inset 0 1px #ffffff0d}.zhiye-v3.experience-upgrade .z3-section-heading>button:hover,.zhiye-v3.experience-upgrade .z3-explore-more button:hover,.zhiye-v3.experience-upgrade .z3-filter-heading>button:hover,.zhiye-v3.experience-upgrade .z3-results-line button:hover{background:#ffffff1f;border-color:#e9eee570}.zhiye-v3.experience-upgrade .z3-random-light{color:#edf0e9;background:#ffffff12;border-color:#e7ece247;font-weight:700;box-shadow:inset 0 1px #ffffff0d}.zhiye-v3.experience-upgrade .z3-story-card-copy>div,.zhiye-v3.experience-upgrade .z3-explore-card-action{color:#ead69f;border-top:1px solid #ebefe624;margin-top:auto;padding-top:12px;font-weight:700}.zhiye-v3.experience-upgrade :is(.z3-primary-cta,.z3-random>button,.z3-section-heading>button,.z3-explore-more button,.z3-random-light,.z3-filter-heading>button,.z3-results-line button):focus-visible{outline-offset:3px;outline:3px solid #f3cf79}.story-share-shell .story-save-button,.story-share-shell .story-share-actions button{color:#f1f2eb;background:#131f1fb8;border-color:#eef1e857;box-shadow:inset 0 1px #ffffff12}.story-share-shell .story-save-button:hover,.story-share-shell .story-share-actions button:hover{background:#253330db;border-color:#eef1e88f}.story-share-shell .story-save-button.is-saved{color:#151d1a;background:#d9e2d3;border-color:#d9e2d3}.zhiye-v3.experience-upgrade .mark-video-button{color:#eef3f1;background:#ffffff14;border-color:#e1ebe857}@media (width<=760px){.zhiye-v3.experience-upgrade .z3-section-heading>button{width:fit-content;margin-top:14px;padding:9px 14px}.zhiye-v3.experience-upgrade .z3-explore-more button,.zhiye-v3.experience-upgrade .z3-random>button,.zhiye-v3.experience-upgrade .z3-random-light{justify-content:space-between;width:100%}}.account-shell.experience-upgrade .story-bookshelf{background:radial-gradient(circle at 74% 0,#dbb8711a,#0000 31%),linear-gradient(145deg,#0b2333f0,#051624f5);border:1px solid #97c2d72b;border-radius:24px;margin:22px 0 24px;position:relative;overflow:hidden;box-shadow:0 24px 66px #0008123b}.story-bookshelf-heading{justify-content:space-between;align-items:end;gap:24px;padding:30px 32px 22px;display:flex}.story-bookshelf-heading>div:first-child>span{color:#d6bb82;letter-spacing:.16em;font-size:.75rem;font-weight:800}.story-bookshelf-heading h2{color:#f2f3ed;margin:7px 0 4px;font:700 2rem/1.3 Songti SC,serif}.story-bookshelf-heading p{color:#8ea3ae;margin:0;font-size:.875rem}.story-bookshelf-progress{color:#a8bac2;grid-template-columns:auto 1fr;align-items:baseline;column-gap:8px;min-width:180px;display:grid}.story-bookshelf-progress b{color:#f1d397;font:700 2.25rem/1 Georgia,serif}.story-bookshelf-progress span{font-size:.8125rem}.story-bookshelf-progress>i{background:#ffffff17;border-radius:999px;grid-column:1/-1;height:5px;margin-top:9px;overflow:hidden}.story-bookshelf-progress>i>em{border-radius:inherit;background:linear-gradient(90deg,#b6975f,#f0d59c);height:100%;display:block}.story-bookcase{background:linear-gradient(90deg,#ffe0ab0a,#0000 11% 89%,#0000003d),repeating-linear-gradient(87deg,#ffffff04 0 1px,#0000 1px 9px),linear-gradient(#21170f 0%,#160f0b 62%,#0d0907 100%);border:1px solid #d8b1703d;border-radius:18px;margin:0 32px;padding:22px 24px 28px;position:relative;box-shadow:inset 0 18px 34px #0000004f,inset 0 0 42px #da9e4d0d,0 12px 26px #0000002e}.story-bookcase:before{content:"";z-index:0;background:linear-gradient(90deg,#0000,#f5cf85 9%,#ffe2a4 50%,#f5cf85 91%,#0000);height:2px;position:absolute;top:0;left:5%;right:5%;box-shadow:0 7px 20px 6px #ebab4f40}.story-shelf-layer{z-index:1;color:#9bb0ba;letter-spacing:.08em;margin:0 10px 8px;font-size:.75rem;display:block;position:relative}.story-shelf-row{z-index:1;min-width:0;position:relative}.story-shelf-books{grid-template-columns:repeat(10,minmax(26px,1fr));align-items:end;gap:clamp(5px,1vw,11px);height:136px;padding:0 10px;display:grid}.story-shelf-board{background:repeating-linear-gradient(92deg,#ffffff08 0 1px,#0000 1px 11px),linear-gradient(#765136,#3b2416 62%,#24140d);border-radius:3px;height:10px;display:block;box-shadow:0 8px 14px #0000007a,inset 0 1px #ffe5b73d,inset 0 -2px #0003}.story-book,.story-book-slot{border-radius:3px 3px 1px 1px;justify-content:space-between;justify-self:center;align-items:center;width:100%;min-width:0;display:flex;overflow:hidden}.story-book{color:#f5efdf;background-blend-mode:screen,soft-light,screen;transform-origin:bottom;background-image:linear-gradient(90deg,#ffffff21,#0000 9% 84%,#0000003b),repeating-linear-gradient(3deg,#ffffff07 0 1px,#0000 1px 4px),radial-gradient(at 34% 24%,#ffeecb17,#0000 42%);border:1px solid #ffe8bd2e;height:120px;padding:9px 7px 8px;text-decoration:none;transition:transform .18s,filter .18s;position:relative;box-shadow:inset 3px 0 #ffffff17,inset -2px 0 #0000002b,4px 3px 9px #00000059}.story-book:before{content:"";z-index:0;pointer-events:none;border-top:1px solid #ecca8859;border-bottom:1px solid #ecca884f;position:absolute;inset:7px 4px 17px;box-shadow:inset 0 1px #00000024,inset 0 -1px #0000002e}.story-book:after{content:"";z-index:0;pointer-events:none;border:1px solid #efd2976b;width:5px;height:5px;position:absolute;top:12px;left:50%;transform:translate(-50%)rotate(45deg)}.story-book:hover{z-index:2;filter:brightness(1.13);transform:translateY(-5px)scale(1.04)}.story-book.is-latest{animation:.7s cubic-bezier(.2,.8,.2,1) both story-book-grow-in;box-shadow:inset 3px 0 #ffffff1f,0 0 0 1px #efcd8b57,0 0 24px #e5b96638}.story-book b{z-index:1;color:#fff8e8;letter-spacing:.08em;text-align:center;text-orientation:upright;text-shadow:0 2px 3px #000000b3;writing-mode:vertical-rl;-webkit-font-smoothing:antialiased;width:100%;height:calc(100% - 14px);margin:auto;font:800 .92rem/1.12 Songti SC,STSong,serif;position:relative;overflow:hidden}.story-book small{color:#fff8e3d1;text-shadow:0 1px 2px #000000a6;font-size:.67rem;font-weight:700;position:absolute;bottom:3px;right:3px}.story-book>em{color:#f3d89f;letter-spacing:.04em;white-space:nowrap;background:#142431;border:1px solid #f7da9e6b;border-radius:999px;padding:3px 6px;font-size:.58rem;font-style:normal;font-weight:800;position:absolute;top:-7px;left:50%;transform:translate(-50%)}.story-book-tone-0{background-color:#86483e}.story-book-tone-1{background-color:#365d61}.story-book-tone-2{background-color:#7a6037}.story-book-tone-3{background-color:#414f70}.story-book-tone-4{background-color:#60445d}.story-book-tone-5{background-color:#3d5945}.story-book-tone-6{background-color:#674a39}.story-book-slot{background:#ffffff04;border:1px dashed #bbced51f;height:112px}.story-book-slot.is-next{background:linear-gradient(#edc98412,#ffffff05);border-color:#edc98475;animation:2.8s ease-in-out infinite story-next-slot;position:relative;box-shadow:inset 0 0 22px #edc9840d}.story-book-slot.is-next small{color:#ceb984;text-align:center;writing-mode:vertical-rl;font-size:.65rem;font-weight:800;position:absolute;bottom:12px;left:0;right:0}.story-bookshelf-empty{color:#dce5e5;text-align:center;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#051420a8;place-content:center;justify-items:center;padding:20px;display:grid;position:absolute;inset:0}.story-bookshelf-empty b{font:700 1.1rem Songti SC,serif}.story-bookshelf-empty p{color:#91a6b0;margin:7px 0 14px;font-size:.8125rem}.story-bookshelf-empty a{color:#10202a;background:#e7e8db;border-radius:999px;padding:9px 13px;font-size:.8125rem;font-weight:750;text-decoration:none}.current-shelf-card{background:#dabc7e12;border:1px solid #dabc7e6b;border-radius:16px;grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);min-height:260px;margin:0 32px;display:grid;overflow:hidden}.current-shelf-card .current-shelf-visual{aspect-ratio:1672/941;background-position:50%;background-size:100% 100%;border:0;border-right:1px solid #e7be772e;border-radius:0;width:100%;height:auto;min-height:0;position:relative;overflow:hidden}.current-shelf-card .current-shelf-visual:after{content:"";z-index:0;pointer-events:none;background:linear-gradient(#0000,#030c1394);position:absolute;inset:32% 0 0}.current-shelf-spines{z-index:2;position:absolute;inset:0}.current-shelf-spine{color:#fff7e6;border:1px solid #0000;border-radius:2px;justify-content:center;align-items:center;padding:5px 2px 13px;text-decoration:none;transition:border-color .18s,filter .18s,background-color .18s;display:flex;position:absolute;overflow:hidden}.current-shelf-spine.is-owned:hover,.current-shelf-spine.is-owned:focus-visible{z-index:3;filter:brightness(1.14);background:#fff4d712;border-color:#f6da9f85;outline:none}.current-shelf-spine.is-latest{border-color:#efcd8b4d;box-shadow:0 0 16px #e5b9662e}.current-shelf-spine.is-empty{pointer-events:none;background:#020a0f9e;box-shadow:inset 0 0 12px #0000004d}.shelf-spine-1{width:6.5%;height:37.6%;top:38.8%;left:19.7%}.shelf-spine-2{width:5.4%;height:35%;top:41.4%;left:26.2%}.shelf-spine-3{width:5.7%;height:33.1%;top:43.3%;left:31.6%}.shelf-spine-4{width:5.2%;height:35.4%;top:41%;left:37.5%}.shelf-spine-5{width:6%;height:37.7%;top:38.7%;left:42.7%}.shelf-spine-6{width:5.9%;height:36.3%;top:40.1%;left:48.7%}.shelf-spine-7{width:5.7%;height:34.6%;top:41.8%;left:54.7%}.shelf-spine-8{width:4.6%;height:35.9%;top:40.5%;left:60.4%}.shelf-spine-9{width:5.1%;height:34.7%;top:41.7%;left:65%}.shelf-spine-10{width:6.3%;height:35.8%;top:40.6%;left:70.1%}.current-shelf-spine b{max-height:100%;color:inherit;letter-spacing:.035em;text-align:center;text-orientation:upright;text-shadow:0 1px 3px #000000eb,0 0 8px #000000ad;writing-mode:vertical-rl;font:800 clamp(.62rem,.8vw,.78rem)/1.05 Songti SC,STSong,serif;overflow:hidden}.current-shelf-spine small{color:#fff8e3d6;text-shadow:0 1px 2px #000000b3;font-size:clamp(.52rem,.65vw,.64rem);font-weight:800;position:absolute;bottom:2px;right:2px}.current-shelf-hint{z-index:2;color:#e7ebe5c7;text-align:center;text-shadow:0 1px 3px #000000d9;margin:0;font-size:.75rem;position:absolute;bottom:7%;left:5%;right:5%}.current-shelf-copy{flex-direction:column;justify-content:center;padding:28px;display:flex}.current-shelf-copy>span{color:#d1b677;letter-spacing:.06em;font-size:.75rem;font-weight:800}.current-shelf-copy h3{color:#f3f2e9;margin:8px 0 7px;font:700 1.6rem/1.3 Songti SC,serif}.current-shelf-copy>p{color:#94a8b1;margin:0;font-size:.8125rem;line-height:1.6}.current-shelf-progress{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;margin-top:22px;display:grid}.current-shelf-progress>i{background:#ffffff14;border-radius:999px;height:5px;display:block;overflow:hidden}.current-shelf-progress>i>em{border-radius:inherit;background:linear-gradient(90deg,#58c5cf,#e6cb91);height:100%;display:block}.current-shelf-progress small{color:#e0c789;font-size:.75rem;font-weight:750}.current-shelf-copy>a{color:#e0c789;border-bottom:1px solid #e0c78973;width:fit-content;margin-top:20px;padding-bottom:3px;font-size:.8125rem;font-weight:750;text-decoration:none}.current-shelf-copy>a:hover{color:#f3dfaa;border-bottom-color:currentColor}.story-growth-status{grid-template-columns:minmax(260px,.7fr) minmax(0,1.3fr);gap:14px;margin:16px 32px 0;display:grid}.story-growth-cycle,.story-layer-growth{background:#ffffff06;border:1px solid #97c2d721;border-radius:14px}.story-growth-cycle{justify-content:center;align-items:center;gap:9px;padding:17px 14px;display:flex}.story-growth-cycle span{color:#6f8590;white-space:nowrap;font-size:.75rem;font-weight:750}.story-growth-cycle span.is-active{color:#e7d29f}.story-growth-cycle i{color:#526b77;font-size:.8rem;font-style:normal}.story-layer-growth{padding:15px 17px}.story-layer-growth header{justify-content:space-between;align-items:center;gap:18px;display:flex}.story-layer-growth header small,.story-layer-growth header b{display:block}.story-layer-growth header small{color:#7ccfd6;letter-spacing:.08em;font-size:.7rem;font-weight:800}.story-layer-growth header b{color:#e8ece8;margin-top:3px;font:700 1rem Songti SC,serif}.story-layer-growth header strong{color:#efd294;font:700 1.55rem Georgia,serif}.story-layer-growth header strong span{color:#849aa4;font-size:.78rem}.story-layer-growth>i,.milestone-building>i{background:#ffffff14;border-radius:999px;height:5px;display:block;overflow:hidden}.story-layer-growth>i{margin-top:11px}.story-layer-growth>i>em,.milestone-building>i>em{border-radius:inherit;background:linear-gradient(90deg,#58c5cf,#e6cb91);height:100%;display:block}.story-layer-growth p{color:#879da7;margin:9px 0 0;font-size:.72rem;line-height:1.5}.story-milestones-title{color:#e6e9e4;margin:24px 32px 0;font:700 1.2rem Songti SC,serif}.story-shelf-milestones{grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;padding:20px 32px 30px;display:grid}.story-shelf-milestones article{grid-column:span 2}.story-shelf-milestones article:nth-child(n+4){grid-column:span 3}.story-shelf-milestones article{color:#738c98;background:#ffffff06;border:1px solid #97c2d71f;border-radius:14px;min-width:0;padding:15px}.story-shelf-milestones article.is-current{background:#dabc7e12;border-color:#dabc7e6b}.story-shelf-milestones article.is-unlocked{border-color:#70cab34d}.story-shelf-milestones article>span{color:#b89d68;letter-spacing:.08em;margin-top:11px;font-size:.6875rem;font-weight:800;display:block}.story-shelf-milestones h3{color:#dce5e4;margin:4px 0 5px;font:700 1.05rem Songti SC,serif}.story-shelf-milestones p{min-height:2.7em;margin:0;font-size:.75rem;line-height:1.45}.story-shelf-milestones small{color:#91a7b0;margin-top:8px;font-size:.7rem;display:block}.story-shelf-milestones .is-unlocked small{color:#75cdb2}.milestone-building{grid-template-columns:1fr auto;align-items:center;gap:9px;margin-top:9px;display:grid}.milestone-building>i{min-width:60px}.milestone-building small{color:#e0c789;white-space:nowrap;margin:0}.milestone-visual{background:#030f1880;border-bottom:4px solid #705238;border-radius:6px 6px 2px 2px;align-items:end;gap:4px;height:112px;padding:7px 8px 5px;display:flex}.milestone-visual i{background:#637d7d;border-radius:2px 2px 0 0;flex:1}.milestone-visual i:first-child{background:#8e5548;height:70%}.milestone-visual i:nth-child(2){background:#b08a51;height:92%}.milestone-visual i:nth-child(3){background:#4d7273;height:76%}.milestone-visual i:nth-child(4){background:#716280;height:88%}.milestone-visual i:nth-child(5){background:#55715a;height:64%}.milestone-visual-10,.milestone-visual-50,.milestone-visual-100,.milestone-visual-200,.milestone-visual-500{background-color:#13202a;background-position:50%;background-size:cover;border:1px solid #e7be7733;border-bottom:5px solid #4a2d1c;display:block;box-shadow:inset 0 0 0 1px #ffffff12,inset 0 -12px 24px #0003,0 6px 12px #0003}.milestone-visual-10{background-image:linear-gradient(#0000 38%,#050f16bd),url(/site-assets/shelf-10.webp)}.milestone-visual-50{background-image:linear-gradient(#0000 38%,#050f16bd),url(/site-assets/shelf-50.webp)}.milestone-visual-100{background-image:linear-gradient(#0000 38%,#050f16bd),url(/site-assets/shelf-100.webp)}.milestone-visual-200{background-image:linear-gradient(#0000 38%,#050f16bd),url(/site-assets/shelf-200.webp)}.milestone-visual-500{background-image:linear-gradient(#0000 38%,#050f16bd),url(/site-assets/shelf-500.webp)}@media (width<=760px){.account-shell.experience-upgrade .story-bookshelf{border-radius:18px;margin:14px 0 18px}.story-bookshelf-heading{flex-direction:column;align-items:start;gap:11px;padding:18px 15px 12px}.story-bookshelf-heading>div:first-child>span,.story-bookshelf-heading>div:first-child>p{display:none}.story-bookshelf-heading h2{margin:0;font-size:1.45rem}.story-bookshelf-progress{width:100%}.story-bookshelf-progress b{font-size:1.75rem}.story-bookshelf-progress span{font-size:.72rem}.current-shelf-card{border-radius:14px;grid-template-columns:1fr;min-height:0;margin:0 12px}.current-shelf-card .current-shelf-visual{aspect-ratio:1672/941;border-bottom:1px solid #e7be772e;border-right:0;height:auto;min-height:0}.current-shelf-spine{padding:3px 1px 9px}.current-shelf-spine b{letter-spacing:0;font-size:clamp(.5rem,2.25vw,.68rem)}.current-shelf-spine small{font-size:.46rem;bottom:1px;right:1px}.current-shelf-hint{font-size:.68rem;bottom:5%}.current-shelf-copy{padding:16px}.current-shelf-copy h3{margin:5px 0;font-size:1.2rem}.current-shelf-copy>p{font-size:.75rem}.current-shelf-progress{margin-top:14px}.current-shelf-copy>a{margin-top:14px;font-size:.78rem}.story-bookcase{scroll-snap-type:x proximity;margin:0 12px;padding:17px 10px 21px;overflow-x:auto}.story-shelf-layer{color:#fff3d8;letter-spacing:.05em;text-shadow:0 2px 3px #000000bf;background:#091924e0;border:1px solid #efcf8f61;border-radius:999px;width:fit-content;margin:0 8px 9px;padding:5px 8px;font-size:.78rem;font-weight:800}.story-shelf-row{min-width:520px}.story-shelf-books{grid-template-columns:repeat(10,43px);justify-content:start;gap:7px;height:126px;padding:0 7px}.story-book{scroll-snap-align:start;min-width:43px;height:112px;padding:8px 5px}.story-book b{color:#fffaf0;letter-spacing:.04em;text-align:center;text-orientation:upright;text-shadow:0 2px 4px #000;writing-mode:vertical-rl;background:0 0;width:100%;height:calc(100% - 14px);max-height:none;padding:0;font-size:.8rem;line-height:1.08;display:block}.story-book small{font-size:.56rem}.story-book>em{display:none}.story-book-slot{scroll-snap-align:start;width:43px;min-width:43px;height:106px}.story-book-slot.is-next small{font-size:.56rem}.story-growth-status{grid-template-columns:1fr;gap:8px;margin:12px}.story-growth-cycle{display:none}.story-layer-growth{padding:12px 14px}.story-layer-growth header small{display:none}.story-layer-growth header b{margin:0;font-size:.9rem}.story-layer-growth header strong{font-size:1.25rem}.story-layer-growth p{font-size:.68rem}.story-milestones-title{margin:18px 14px 0;font-size:1.05rem}.story-shelf-milestones{grid-template-columns:1fr;gap:8px;padding:16px 12px 22px}.story-shelf-milestones article,.story-shelf-milestones article:nth-child(n+4){grid-column:auto;grid-template-columns:88px 1fr;align-items:center;column-gap:11px;padding:11px;display:grid}.story-shelf-milestones .milestone-visual{grid-row:1/4;width:88px;height:70px}.story-shelf-milestones article>span{color:#e7cc91;margin-top:0;font-size:.68rem}.story-shelf-milestones h3,.story-shelf-milestones p,.story-shelf-milestones small{grid-column:2}.story-shelf-milestones h3{color:#fff8e9;text-shadow:0 2px 3px #000000b3;margin:2px 0;font-size:1rem}.story-shelf-milestones p{display:none}.story-shelf-milestones small{margin-top:3px;font-size:.65rem}.story-shelf-milestones .milestone-building{grid-column:2;margin-top:4px}.account-shell.experience-upgrade .account-stat-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.account-shell.experience-upgrade .account-stat-grid article{text-align:center;padding:10px 5px;display:block}.account-shell.experience-upgrade .account-stat-grid .stat-symbol,.account-shell.experience-upgrade .account-stat-grid p{display:none}.account-shell.experience-upgrade .account-stat-grid small{font-size:.66rem}.account-shell.experience-upgrade .account-stat-grid b{margin-top:3px;font-size:1.25rem}}@media (prefers-reduced-motion:reduce){.story-book{transition:none}.story-book.is-latest,.story-book-slot.is-next{animation:none}}@keyframes story-book-grow-in{0%{opacity:.35;transform:translateY(18px)scaleY(.72)}to{opacity:1;transform:translateY(0)scaleY(1)}}@keyframes story-next-slot{0%,to{border-color:#edc98447}50%{border-color:#edc9849e;box-shadow:inset 0 0 24px #edc98417}}:root{--action-height:48px;--action-radius:16px;--action-gap:10px;--action-ink:#e7ece5;--action-surface:#e1ede50f;--action-border:#e1ede51f;--action-primary:#d9d0bb;--action-primary-ink:#18221f}:is(.zhiye-v3.experience-upgrade,.story-share-shell,.learner-auth-shell,.learning-experience) :is(.z3-primary-cta,.z3-random>button,.z3-random-light,.z3-section-heading>button,.z3-explore-more button,.z3-filter-heading>button,.z3-results-line button,.explore-filter-options button,.content-state button,.lesson-caption-row .lesson-share-link,.mark-video-button,.answer-feedback button,.quiz-complete>button,.lesson-feedback button,.knowledge-corner-nav>button,.learning-sync button,.account-name-form button,.account-profile-actions :is(button,a),.account-history-filters button,.account-resume,.account-history-empty a,.story-share-primary,.story-save-button,.story-share-actions button,.auth-form>button,.auth-method-switch button),.video-with-toolbar :is(.video-toolbar-button,.branch-video-toolbar button,.player-error button,.decision-inline-sync button,.interaction-sync-banner button,.decision-text-feedback button,.route-footer button){box-sizing:border-box;min-height:var(--action-height);border:1px solid var(--control-border,var(--action-border));border-radius:var(--control-radius,var(--action-radius));background:var(--control-surface,var(--action-surface));height:auto;color:var(--control-ink,var(--action-ink));font-family:var(--ui-font);text-align:center;letter-spacing:0;box-shadow:none;cursor:pointer;justify-content:center;align-items:center;gap:8px;padding:11px 16px;font-size:.9375rem;font-weight:600;line-height:1.4;text-decoration:none;transition:background .18s,border-color .18s,color .18s;display:inline-flex}:is(.zhiye-v3.experience-upgrade,.story-share-shell,.learner-auth-shell,.learning-experience) :is(.z3-primary-cta,.answer-feedback button,.lesson-feedback button,.account-name-form button[type=submit],.account-history-empty a,.story-share-primary,.auth-form>button),.video-with-toolbar :is(.video-play-button,.branch-video-toolbar button,.decision-text-feedback button,.route-footer .route-continue){--control-border:transparent;--control-surface:var(--action-primary);--control-ink:var(--action-primary-ink);--control-hover-border:transparent;--control-hover-surface:#e9e2d2;--control-hover-ink:var(--action-primary-ink)}.zhiye-v3.experience-upgrade :is(.explore-filter-options button,.account-history-filters button)[aria-pressed=true],.learner-auth-shell .auth-method-switch button[aria-pressed=true],.story-share-shell .story-save-button.is-saved{--control-border:#e1d2b140;--control-surface:#e1d2b121;--control-ink:#f0dfb9;font-weight:650}.zhiye-v3.experience-upgrade :is(.z3-random>button,.z3-random-light,.account-resume){--control-border:#e1d2b12e;--control-surface:#e1d2b114;--control-ink:#e9dbb9}:is(.zhiye-v3.experience-upgrade,.learning-experience) :is(.z3-section-heading>button,.z3-explore-more button,.z3-filter-heading>button,.z3-results-line button,.lesson-caption-row .lesson-share-link,.mark-video-button){--control-border:transparent;--control-surface:transparent;--control-ink:#cbd7cd}.zhiye-v3.experience-upgrade :is(.explore-filter-options button,.account-history-filters button),.learner-auth-shell .auth-method-switch button{--control-radius:999px}.zhiye-v3.experience-upgrade :is(.explore-filter-options button,.account-history-filters button):not([aria-pressed=true]),.learner-auth-shell .auth-method-switch button:not([aria-pressed=true]){--control-border:transparent;--control-surface:transparent;--control-ink:#c7d1c9}@media (hover:hover){:is(.zhiye-v3.experience-upgrade,.story-share-shell,.learner-auth-shell,.learning-experience) :is(.z3-primary-cta,.z3-random>button,.z3-random-light,.z3-section-heading>button,.z3-explore-more button,.z3-filter-heading>button,.z3-results-line button,.explore-filter-options button,.lesson-share-link,.mark-video-button,.answer-feedback button,.quiz-complete>button,.lesson-feedback button,.knowledge-corner-nav>button,.account-profile-actions :is(button,a),.account-name-form button,.account-history-empty a,.account-history-filters button,.account-resume,.story-share-primary,.story-save-button,.story-share-actions button,.auth-form>button,.auth-method-switch button,.learning-sync button,.content-state button):hover:not(:disabled):not([aria-pressed=true]),.video-with-toolbar :is(.video-toolbar-button,.branch-video-toolbar button,.player-error button,.decision-text-feedback button,.route-footer button):hover:not(:disabled){border-color:var(--control-hover-border,#e1ede533);background:var(--control-hover-surface,#e1ede51c);color:var(--control-hover-ink,#f4f3e9)}}:is(.zhiye-v3,.story-share-shell,.learner-auth-shell,.video-with-toolbar) :is(button,a,summary):focus-visible{outline-offset:3px;outline:2px solid #ead5a1}.zhiye-v3.experience-upgrade :is(.z3-random-light,.z3-random>button,.answer-feedback button,.account-name-form button,.account-profile-actions button,.z3-results-line button):disabled,.video-with-toolbar :is(.video-toolbar-button,.player-error button,.decision-inline-sync button,.interaction-sync-banner button,.route-footer button):disabled{opacity:1;color:#9aaca6;cursor:not-allowed;background:#e1ede508;border-color:#0000}.zhiye-v3.experience-upgrade :is(.answer-grid,.decision-choices) button:disabled{opacity:1}.zhiye-v3.experience-upgrade.screen-lesson .answer-grid button{border-radius:var(--action-radius);color:#e7ece5;background:#e1ede50a;border-color:#e1ede51f;transition:background .18s,border-color .18s}.zhiye-v3.experience-upgrade.screen-lesson .answer-grid button>i{color:#bfcfc5;background:0 0;font-weight:500}.zhiye-v3.experience-upgrade.screen-lesson .answer-grid button.correct{color:#e3f5e9;background:#588f6f33;border-color:#85c19d8c}.zhiye-v3.experience-upgrade.screen-lesson .answer-grid button.wrong{color:#f7e5df;background:#9e685b2e;border-color:#d197878c}@media (hover:hover){.zhiye-v3.experience-upgrade.screen-lesson .answer-grid button:hover:not(:disabled){background:#e1ede517;border-color:#e1ede547}}.learning-experience .lesson-video.has-player-toolbar{aspect-ratio:auto}.decision-video-experience.video-with-toolbar{border-radius:inherit;background:#0d1619;flex-direction:column;width:100%;min-width:0;display:flex;position:relative;inset:auto}.video-with-toolbar .story-video-frame{aspect-ratio:16/9;border-radius:inherit;background:#080c0e;flex:none;width:100%;min-height:0;position:relative}.video-with-toolbar>.story-video-frame{border-radius:14px 14px 0 0}.video-with-toolbar .story-video-frame>iframe{border-radius:inherit;background:#080c0e;border:0;width:100%;height:100%;position:absolute;inset:0}.story-video-toolbar{align-items:center;gap:var(--action-gap);background:#132226;border-top:1px solid #e1ede51f;border-radius:0 0 14px 14px;flex-wrap:wrap;flex:none;padding:14px 16px;display:flex;position:relative}.video-toolbar-secondary{gap:var(--action-gap);flex-wrap:wrap;margin-left:auto;display:flex}.video-with-toolbar .video-toolbar-button{white-space:nowrap;flex-shrink:0}.video-toolbar-button svg{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;width:19px;height:19px}.video-with-toolbar .video-play-button{min-width:134px}.video-interaction-status,.video-quality-note{color:#c3d1cb;flex:0 0 100%;margin:0;font-size:.8125rem;line-height:1.6}.video-quality-note{color:#e3ece7;background:#1b302e;border:1px solid #526862;border-radius:10px;padding:12px 14px}.video-with-toolbar.has-active-interaction>.story-video-toolbar{visibility:hidden}.video-with-toolbar .interaction-upcoming{max-width:calc(100% - 24px);top:14px}.video-with-toolbar .interaction-upcoming span{font-size:.8125rem}.video-with-toolbar>.interaction-sync-banner{border-radius:0 0 14px 14px;flex-wrap:wrap;margin:0;position:static}.video-with-toolbar .player-error{color:#fff;background:#172b2b;border-color:#8ba49a}.video-with-toolbar .player-error p{margin:0 0 10px}.video-with-toolbar .player-error button{margin:0 8px 8px 0}.decision-video-experience.video-with-toolbar:is(:fullscreen,.is-interactive-fullscreen){z-index:1300;border-radius:0;width:100vw;height:100dvh;position:fixed;inset:0}.video-with-toolbar.is-interactive-fullscreen>.story-video-frame{aspect-ratio:auto;border-radius:0;flex:1 1 0}.video-with-toolbar.is-interactive-fullscreen>.story-video-toolbar{padding-bottom:max(14px, env(safe-area-inset-bottom));border-radius:0;max-height:42dvh;overflow-y:auto}.video-with-toolbar.is-interactive-fullscreen .video-interaction-status{display:none}.video-with-toolbar .interaction-dialog-actions{top:max(12px, env(safe-area-inset-top));right:max(12px, env(safe-area-inset-right));z-index:30;position:absolute}.decision-video-experience.video-with-toolbar .decision-overlay{padding-top:76px}.video-with-toolbar .route-overlay{z-index:1200;padding-top:76px}.video-with-toolbar .decision-card{max-height:100%}.video-with-toolbar .decision-overlay.mode-branch{flex-direction:column;justify-content:center;align-items:center;padding:76px 16px 16px;display:flex}.video-with-toolbar .decision-overlay.mode-branch .branch-video-stage{aspect-ratio:auto;flex-direction:column;width:100%;max-width:1000px;height:100%;display:flex;position:relative;inset:auto}.video-with-toolbar .branch-video-stage>.story-video-frame{aspect-ratio:auto;flex:1 1 0}.video-with-toolbar .decision-overlay.mode-branch .branch-video-toolbar{background:#132226;border-radius:0 0 12px 12px;flex:none;justify-content:space-between;gap:12px;margin:0;padding:12px;display:flex;position:static}.video-with-toolbar .branch-video-toolbar span{color:#e2e9e4;max-width:none;font-size:.875rem;line-height:1.5}.video-with-toolbar .branch-video-toolbar button{flex:none}.zhiye-v3 .simple-explore{max-width:1160px;padding:36px 0 56px}.explore-heading h1{color:#f4f2e9;font:700 clamp(1.75rem, 3vw, 2.25rem)/1.4 var(--story-font);margin:0}.simple-explore .z3-search-row{grid-template-columns:minmax(0,1fr);margin:20px 0 22px}.simple-explore .z3-search{background:#e1ede50a;border-color:#e1ede52e;border-radius:18px;min-height:56px}.simple-explore .z3-search:focus-within{border-color:#cfbea0;box-shadow:0 0 0 3px #e1d2b11a}.simple-explore .z3-search>button{color:#d6dfd7;background:0 0;border-radius:50%}.explore-filters{border-bottom:1px solid #e1ede51f;gap:14px;padding-bottom:22px;display:grid}.explore-filter-row{grid-template-columns:44px minmax(0,1fr);align-items:start;gap:14px;display:grid}.explore-filter-row h2{color:#c6d1cb;min-height:48px;font:600 .875rem/1.4 var(--ui-font);align-items:center;margin:0;display:flex}.explore-filter-options{flex-wrap:wrap;gap:8px;min-width:0;display:flex}.zhiye-v3.experience-upgrade .simple-explore .explore-filter-options button{white-space:normal;overflow-wrap:anywhere;min-width:112px;padding:11px 16px}.simple-explore .z3-results-line{align-items:center;margin:24px 0 18px}.simple-explore .z3-results-line h2{margin:0;font-size:1.25rem;line-height:1.4}.simple-explore .z3-results-summary{color:#b8c5bf;margin-top:6px;font-size:.875rem}.simple-explore .z3-results-line>button{flex:none}.z3-results-line h2 span,.z3-explore-card-meta{color:#b2c1b9}.z3-explore-story-copy{min-height:248px}.z3-explore-story-copy>p{color:#b7c3bd}.z3-explore-story-copy h3{overflow-wrap:anywhere}.zhiye-v3.experience-upgrade .z3-explore-card-action{min-height:var(--action-height);color:#e4d5b2;background:0 0;border:0;border-top:1px solid #e1ede51f;border-radius:0;padding:12px 0 0;font-weight:600}.z3-explore-story-card>a:focus-visible{outline-offset:-3px}.experience-upgrade.screen-lesson .back-button{min-height:var(--action-height);color:#edf1e9;align-items:center;padding:0;display:flex}.experience-upgrade.screen-lesson .lesson-caption-row{gap:12px;margin-top:12px}.experience-upgrade.screen-lesson .lesson-share-link{flex:none}.experience-upgrade.screen-lesson .lesson-heading .story-period{background:#1b2b2b;border-color:#53685e;border-radius:8px;min-height:32px;padding:5px 9px}.experience-upgrade.screen-lesson .lesson-stage-summary{align-items:center;gap:14px 20px}.experience-upgrade.screen-lesson .mark-video-button{margin-left:auto}.account-shell.experience-upgrade .account-profile-meta{margin:10px 0 0 78px}.account-shell.experience-upgrade .account-profile-identity{flex:1;min-width:0}.account-shell.experience-upgrade .account-name-display p{white-space:normal;overflow-wrap:anywhere;max-width:100%}.account-profile-actions{grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;gap:10px;width:min(100%,520px);margin-top:22px;display:grid}.account-shell.experience-upgrade .account-profile-actions>:is(button,a){width:100%;min-width:0;margin:0}.account-shell.experience-upgrade .account-name-form{width:min(100%,520px);margin-top:16px}.account-name-message{margin:12px 0 0;font-size:.875rem;line-height:1.5}.account-name-message.success{color:#b9efd3}.account-name-message.error{color:#ffd0bd}.account-shell.experience-upgrade .account-name-form>div{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:stretch;gap:10px;display:grid}.account-shell.experience-upgrade .account-name-form input{width:100%;min-height:var(--action-height);border-radius:12px;grid-column:1/-1;min-width:0}.account-shell.experience-upgrade .account-name-form button{width:100%}.account-shell.experience-upgrade .account-history-filters{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;display:grid;overflow:visible}.account-shell.experience-upgrade .account-history-filters button{white-space:normal;width:100%;min-width:0}.account-shell.experience-upgrade .account-history-list>article{grid-template-columns:136px minmax(0,1fr) 108px 144px;align-items:center;gap:20px}.account-shell.experience-upgrade .account-history-list .account-resume{grid-area:1/4;place-self:center end;width:144px;min-width:0}.account-shell.experience-upgrade .account-history-list .account-inline-review{grid-column:1/-1}.account-shell.experience-upgrade .account-history-copy h3{overflow-wrap:anywhere}.account-shell.experience-upgrade .account-quiz-record :is(small,span),.account-shell.experience-upgrade .account-playback-position{color:#b6c8d0}.story-share-shell .story-share-actions{flex-direction:column;gap:10px;display:flex}.story-share-shell .z3-detail-hero span.story-share-primary.is-pending{color:#9aaca6;cursor:default;background:#e1ede508;border-color:#0000}.zhiye-v3.experience-upgrade .learner-header :is(.z3-header-search,.user-signout,.user-login-link){border-radius:12px;min-height:44px}.learner-auth-shell .auth-switch button{min-height:var(--action-height)}.learner-auth-shell :is(.auth-recovery-link,.auth-return){align-items:center;min-height:44px;display:inline-flex}.zhiye-v3.experience-upgrade .knowledge-corner-nav>button:disabled{opacity:1;color:#9aaca6;background:#e1ede508;border-color:#0000}@media (width<=760px){.zhiye-v3 .simple-explore{padding:24px 0 32px}.simple-explore .z3-search-row{margin:16px 0 20px}.explore-filters{gap:16px;padding-bottom:20px}.explore-filter-row{grid-template-columns:minmax(0,1fr);gap:8px}.explore-filter-row h2{min-height:0}.explore-filter-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.explore-experience-options{grid-template-columns:repeat(3,minmax(0,1fr))}.zhiye-v3.experience-upgrade .simple-explore .explore-filter-options button{width:100%;min-width:0;padding:11px 8px;font-size:.875rem}.simple-explore .z3-results-line{flex-wrap:wrap;gap:12px;margin-top:20px}.z3-explore-story-copy{min-height:236px}.story-video-toolbar{align-items:stretch;gap:10px;padding:12px}.video-toolbar-secondary{flex-wrap:wrap;justify-content:flex-end;gap:8px;width:100%;margin-left:0;display:flex}.video-toolbar-secondary>button{width:auto;min-width:0;padding-inline:10px}.video-with-toolbar .player-error{max-height:calc(100% - 16px);padding:12px;inset:8px 8px auto;overflow-y:auto}.video-with-toolbar .player-error button{min-height:44px;padding:9px 12px;font-size:.875rem}.decision-video-experience.video-with-toolbar .decision-card{max-height:calc(100dvh - 88px)}.video-with-toolbar .route-overlay{padding:76px 0 0}.video-with-toolbar .route-player-strip{padding:10px 12px}.video-with-toolbar .decision-overlay.mode-branch .branch-video-stage{height:auto;max-height:100%}.video-with-toolbar .branch-video-stage>.story-video-frame{aspect-ratio:16/9;flex:none}.video-with-toolbar .branch-video-toolbar{flex-wrap:wrap}.video-with-toolbar .branch-video-toolbar button{margin-left:auto}.experience-upgrade.screen-lesson .lesson-caption-row{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px;display:grid}.experience-upgrade.screen-lesson .lesson-heading .story-period{grid-column:1;width:fit-content;max-width:100%}.experience-upgrade.screen-lesson .lesson-share-link{color:#d9c99f;white-space:nowrap;background:0 0;border:0;border-radius:0;grid-column:2;width:auto;min-height:36px;margin-left:auto;padding:6px 2px;font-size:.8125rem}.experience-upgrade.screen-lesson .mark-video-button{width:100%;margin:0}.account-shell.experience-upgrade .account-profile-meta{margin-left:60px}.account-profile-actions{gap:8px;width:100%;margin-top:20px}.account-shell.experience-upgrade.zhiye-v3 .account-profile-actions>:is(button,a){overflow-wrap:anywhere;padding:11px 8px;font-size:.875rem}.account-shell.experience-upgrade .account-history-filters{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.account-shell.experience-upgrade .account-history-list>article{grid-template-columns:88px minmax(0,1fr);align-items:start;gap:14px}.account-shell.experience-upgrade .account-history-list .cover.mini{aspect-ratio:16/9;grid-area:1/1;width:88px;height:auto}.account-shell.experience-upgrade .account-history-copy{grid-area:1/2}.account-shell.experience-upgrade .account-quiz-record{text-align:left;border-left:0;flex-wrap:wrap;grid-area:2/1/auto/-1;align-items:baseline;gap:6px 12px;padding:12px 0 0;display:flex}.account-shell.experience-upgrade .account-quiz-record b{margin:0}.account-shell.experience-upgrade .account-history-list .account-resume{grid-area:3/1/auto/-1;justify-self:stretch;width:100%}.account-shell.experience-upgrade .account-history-list .account-inline-review{grid-row:4}.knowledge-corner-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.zhiye-v3.experience-upgrade .knowledge-corner-nav>button{width:100%;padding:11px 12px;font-size:.9375rem}.knowledge-corner-nav>button span{padding:0;font-size:1.25rem}.knowledge-corner-nav>div{grid-area:2/1/auto/-1}}@media (width>=761px) and (width<=1000px){.account-shell.experience-upgrade .account-history-list>article{grid-template-columns:112px minmax(0,1fr) 144px;gap:16px}.account-shell.experience-upgrade .account-history-copy{grid-area:1/2}.account-shell.experience-upgrade .account-quiz-record{border-left:0;grid-area:2/2;padding-left:0}.account-shell.experience-upgrade .account-history-list .account-resume{grid-area:1/3/3}}@media (height<=500px) and (orientation:landscape){.video-with-toolbar.is-interactive-fullscreen>.story-video-toolbar{flex-wrap:nowrap;max-height:28dvh;padding:8px 12px}.video-with-toolbar.is-interactive-fullscreen .video-play-button{width:auto}.video-with-toolbar.is-interactive-fullscreen .video-toolbar-secondary{flex-wrap:nowrap;width:auto;margin-left:auto}.video-with-toolbar.is-interactive-fullscreen .video-quality-button,.video-with-toolbar.is-interactive-fullscreen .video-quality-note{display:none}.video-with-toolbar .decision-overlay.mode-branch .branch-video-stage{width:min(100%,177.778dvh - 295.111px)}.video-with-toolbar .branch-video-toolbar span{display:none}.video-with-toolbar .branch-video-toolbar{padding:8px}}@media (prefers-reduced-motion:reduce){:is(.zhiye-v3,.story-share-shell,.learner-auth-shell,.video-with-toolbar) :is(button,a){transition:none}}.account-shell.experience-upgrade .account-profile-actions{flex-wrap:wrap;gap:4px 18px;width:auto;margin-top:18px;display:flex}.account-shell.experience-upgrade.zhiye-v3 .account-profile-actions>:is(button,a){color:#aebbb5;background:0 0;border:0;border-radius:0;width:auto;min-width:0;min-height:44px;padding:8px 0;font-size:.875rem;font-weight:500}.account-shell.experience-upgrade.zhiye-v3 .account-profile-actions>:is(button,a):hover{color:#f0f2eb;text-underline-offset:4px;background:0 0;text-decoration:underline}.account-shell.experience-upgrade .account-history-filters{border-bottom:1px solid #e1ede51f;gap:22px;padding-bottom:0;display:flex}.account-shell.experience-upgrade.zhiye-v3 .account-history-filters button{color:#9caaa4;background:0 0;border:0;border-bottom:2px solid #0000;border-radius:0;width:auto;min-width:0;min-height:44px;padding:10px 0;font-size:.875rem;font-weight:500}.account-shell.experience-upgrade.zhiye-v3 .account-history-filters button[aria-pressed=true]{color:#ecefe8;background:0 0;border-bottom-color:#d8c28a}.account-shell.experience-upgrade .account-history-list .account-resume{color:#dfcfaa;background:0 0;border:0;border-radius:0;justify-self:end;width:auto;min-width:0;min-height:44px;padding:8px 0;font-weight:600}.account-shell.experience-upgrade .account-history-list .account-resume:hover{color:#f2e5c6;background:0 0}@media (width<=760px){.account-shell.experience-upgrade .account-profile-actions{gap:2px 16px;margin-top:14px}.account-shell.experience-upgrade.zhiye-v3 .account-profile-actions>:is(button,a){width:auto;padding:8px 0}.account-shell.experience-upgrade .account-history-filters{gap:18px;padding-bottom:0;display:flex;overflow-x:auto}.account-shell.experience-upgrade.zhiye-v3 .account-history-filters button{white-space:nowrap;flex:none;width:auto}.account-shell.experience-upgrade .account-history-list .account-resume{justify-self:start;width:auto}.learner-auth-shell .auth-category-cards{grid-template-columns:repeat(4,minmax(0,1fr));justify-content:stretch;display:grid}.learner-auth-shell .auth-category-cards>span{width:auto;min-width:0}.zhiye-v3 .learner-header.site-header{height:calc(58px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 12px 0}.zhiye-v3 .mobile-bottom-nav{height:calc(62px + env(safe-area-inset-bottom));padding-top:3px}.zhiye-v3 .mobile-bottom-nav a{min-height:52px;font-size:.8125rem}.zhiye-v3 .z3-hero{border-radius:16px;width:calc(100% - 16px);min-height:clamp(390px,56svh,455px);margin-top:8px}.zhiye-v3 .z3-hero-copy{margin:86px 16px 18px}.zhiye-v3 .z3-hero-copy>small{font-size:.6875rem}.zhiye-v3 .z3-hero-copy h1{max-width:14em;margin-top:8px;font-size:clamp(1.72rem,8vw,2.12rem);line-height:1.18}.zhiye-v3 .z3-hero-copy>p{font-size:.875rem;line-height:1.5}.zhiye-v3 .z3-hero-meta{margin:9px 0 12px}.zhiye-v3 .z3-primary-cta{min-height:46px;padding:10px 15px}.zhiye-v3 .z3-section{width:calc(100% - 24px);margin-top:34px}.zhiye-v3 .z3-section-heading{margin-bottom:16px}.zhiye-v3 .z3-section-heading h2{font-size:1.55rem}.zhiye-v3 .z3-section-heading>p{margin-top:7px;line-height:1.55}.zhiye-v3 .z3-section-heading>button{min-height:44px;margin-top:9px}.zhiye-v3 .z3-story-grid{gap:10px}.zhiye-v3 .z3-story-grid .z3-story-card{border-radius:13px;width:min(82vw,310px);min-width:min(82vw,310px)}.zhiye-v3 .z3-story-card-copy{min-height:138px;padding:14px 15px}.zhiye-v3 .z3-story-card-copy>p{font-size:.75rem}.zhiye-v3 .z3-story-card-copy h3{-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:8px 0 10px;font-size:1.08rem;line-height:1.45;display:-webkit-box;overflow:hidden}.zhiye-v3 .z3-story-card-copy>div{padding-top:9px;font-size:.8125rem}.zhiye-v3 .z3-experiences{width:100%;margin-top:34px}.zhiye-v3 .z3-experience-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:0 12px;display:grid;overflow:visible}.zhiye-v3 .z3-experience-card{width:auto;min-width:0;min-height:148px;padding:15px}.zhiye-v3 .z3-experience-card b{max-width:6.5em;font-size:1.05rem;line-height:1.35}.zhiye-v3 .z3-random{gap:18px;width:calc(100% - 24px);min-height:166px;margin-top:36px;padding:20px}.zhiye-v3 .z3-random h2{font-size:1.55rem}.zhiye-v3 .z3-random p{margin-top:7px;font-size:.875rem}.zhiye-v3.experience-upgrade .z3-random>button{width:fit-content;min-height:44px;padding:9px 14px}.zhiye-v3 .z3-brand-line{gap:7px;width:calc(100% - 24px);padding-top:26px}.zhiye-v3 .z3-brand-line p{font-size:.6875rem}.zhiye-v3 .simple-explore{width:calc(100% - 24px);padding:26px 0 calc(84px + env(safe-area-inset-bottom))}.zhiye-v3 .explore-heading h1{font-size:2.05rem}.zhiye-v3 .simple-explore .z3-search-row{margin:14px 0 18px}.zhiye-v3 .simple-explore .z3-search{border-radius:14px;min-height:52px}.zhiye-v3 .explore-filters{gap:13px;padding-bottom:16px}.zhiye-v3 .explore-filter-options{gap:7px}.zhiye-v3.experience-upgrade .simple-explore .explore-filter-options button{min-height:44px;padding:9px 7px}.zhiye-v3 .simple-explore .z3-results-line{margin:18px 0 14px}.zhiye-v3 .simple-explore .z3-results-summary{display:none}.zhiye-v3 .z3-story-result-group>h3{margin-bottom:12px}.zhiye-v3 .z3-all-stories{gap:12px}.zhiye-v3 .z3-explore-story-card{border-radius:14px}.zhiye-v3 .z3-explore-story-copy{min-height:0;padding:15px}.zhiye-v3 .z3-explore-story-copy h3{margin:10px 0 6px;font-size:1.08rem;line-height:1.45}.zhiye-v3 .z3-explore-story-copy>p{-webkit-line-clamp:1;min-height:0;font-size:.8125rem}.zhiye-v3 .z3-explore-card-meta{margin:11px 0 9px;font-size:.75rem}.zhiye-v3.experience-upgrade .z3-explore-card-action{min-height:42px;padding-top:9px;font-size:.8125rem}.zhiye-v3 .z3-upcoming-stories{margin-top:22px}.story-share-shell .story-share-card.z3-detail-hero{border-radius:0 0 18px 18px;min-height:clamp(590px,100svh - 64px,660px)}.story-share-shell .z3-detail-hero .story-share-copy{margin:155px 16px 22px}.story-share-shell .z3-detail-hero .story-share-copy h1{max-width:14em;font-size:clamp(1.8rem,8.2vw,2.35rem);line-height:1.18}.story-share-shell .z3-detail-hero .story-share-description{-webkit-line-clamp:2;margin-bottom:14px}.story-share-shell .z3-detail-hero .story-share-cta{gap:7px}.story-share-shell .z3-journey{width:calc(100% - 24px);margin-top:44px}.story-share-shell .z3-journey-heading h2{font-size:1.65rem}.story-share-shell .z3-journey-heading p{margin-top:8px;font-size:.875rem}.story-share-shell .z3-journey ol{margin-top:26px}.account-shell.experience-upgrade .account-page{padding:12px 10px calc(78px + env(safe-area-inset-bottom))}.account-shell.experience-upgrade .account-overview{border-radius:17px;gap:16px;padding:20px 16px}.account-shell.experience-upgrade .account-profile-line{margin-top:11px}.account-shell.experience-upgrade .account-profile-line h1{font-size:1.75rem}.account-shell.experience-upgrade .account-primary-stat{padding:15px 16px}.account-shell.experience-upgrade .account-primary-stat strong{font-size:2.35rem}.account-shell.experience-upgrade .story-bookshelf{margin-top:10px}.account-shell.experience-upgrade .story-bookshelf-heading{padding:16px 14px 10px}.account-shell.experience-upgrade .story-bookshelf-heading h2{font-size:1.3rem}.account-shell.experience-upgrade .story-bookcase{margin-inline:8px}.account-shell.experience-upgrade .story-milestones-title{margin-top:15px}.account-shell.experience-upgrade .story-shelf-milestones{scroll-snap-type:x mandatory;scrollbar-width:none;gap:9px;padding:12px 10px 18px;display:flex;overflow-x:auto}.account-shell.experience-upgrade .story-shelf-milestones::-webkit-scrollbar{display:none}.account-shell.experience-upgrade .story-shelf-milestones article,.account-shell.experience-upgrade .story-shelf-milestones article:nth-child(n+4){scroll-snap-align:start;grid-template-columns:78px 1fr;min-width:min(76vw,270px);padding:10px}.account-shell.experience-upgrade .story-shelf-milestones .milestone-visual{width:78px;height:64px}.account-shell.experience-upgrade .account-stat-grid{margin:10px 0 14px}.account-shell.experience-upgrade .account-stat-grid small,.account-shell.experience-upgrade .story-layer-growth p,.account-shell.experience-upgrade .story-shelf-milestones article>span,.account-shell.experience-upgrade .story-shelf-milestones article>small{font-size:.75rem}.account-shell.experience-upgrade .account-history>header{padding:17px 14px}.account-shell.experience-upgrade .account-history>header h2{font-size:1.35rem}.account-shell.experience-upgrade .account-history-list>article{padding:13px 11px}}.video-with-toolbar .route-footer .route-undo{--control-border:#c5c7c3;--control-surface:#f7f5ef;--control-ink:#34404e}.video-with-toolbar .route-footer .route-reset{--control-border:#d8c092;--control-surface:#fff8e8;--control-ink:#704f2a}.video-with-toolbar .route-footer .route-history-action>span{color:#8a6331}.video-with-toolbar .route-footer .route-history-action:disabled{--control-border:#d9ddd9;--control-surface:#edf0ed;--control-ink:#8b928f}@media (width<=760px){.learner-auth-shell .auth-form :is(input,select),.recovery-card .auth-form input,.account-shell.experience-upgrade .account-name-form input,.zhiye-v3 .simple-explore .z3-search input{font-size:16px}.experience-upgrade.screen-lesson .lesson-page{padding-bottom:calc(82px + env(safe-area-inset-bottom))}.experience-upgrade.screen-lesson .back-button{min-height:44px;margin:10px 16px 2px;font-size:.8125rem}.experience-upgrade.screen-lesson .lesson-heading{padding:8px 16px 15px}.experience-upgrade.screen-lesson .lesson-heading h1{margin:9px 0 8px;font-size:clamp(1.65rem,7.5vw,2rem);line-height:1.28}.experience-upgrade.screen-lesson .lesson-heading .lesson-tags{gap:8px}.experience-upgrade.screen-lesson .lesson-heading .lesson-tags>span,.experience-upgrade.screen-lesson .lesson-heading .lesson-tags small{font-size:.75rem}.experience-upgrade.screen-lesson .lesson-heading .lesson-subtitle{margin-top:7px;font-size:.9375rem;line-height:1.55}.experience-upgrade.screen-lesson .lesson-caption-row{margin-top:10px}.experience-upgrade.screen-lesson .lesson-share-link{min-height:44px;padding-block:10px}.experience-upgrade.screen-lesson .lesson-heading .story-period{min-height:34px;padding:5px 8px}.experience-upgrade.screen-lesson .lesson-video{border-radius:0;box-shadow:0 18px 48px #00081452}.video-with-toolbar>.story-video-frame{border-radius:0}.video-with-toolbar .story-video-toolbar{background:#0f1d21;border-radius:0;min-height:54px;padding:7px 12px}.video-with-toolbar .video-toolbar-secondary>button{color:#cbd8d2;background:0 0;border-color:#0000;border-radius:9px;min-height:44px;padding:7px 10px;font-size:.8125rem}.video-with-toolbar .video-toolbar-secondary>button svg{width:17px;height:17px}.video-with-toolbar .video-interaction-status{color:#aebeb8;flex:1 0 100%;padding-top:1px;font-size:.75rem}.video-with-toolbar .decision-choices button{min-height:48px;padding:8px 10px}.video-with-toolbar .decision-choices span,.video-with-toolbar .decision-text-feedback p{font-size:.875rem}.video-with-toolbar .decision-text-feedback button{min-height:44px}.experience-upgrade.screen-lesson .lesson-intro{-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0;border-top:0;margin:0;padding:17px 16px 0}.experience-upgrade.screen-lesson .lesson-description{margin:0;font-size:.875rem;line-height:1.7}.experience-upgrade.screen-lesson .lesson-stage-summary{background:#e1ede508;border:1px solid #e1ede51c;border-radius:13px;grid-template-columns:minmax(0,1fr);gap:0;margin-top:15px;padding:0;display:grid;overflow:hidden}.experience-upgrade.screen-lesson .lesson-stage-summary>span{border-bottom:1px solid #e1ede517;min-height:45px;padding:10px 12px;font-size:.8125rem}.experience-upgrade.screen-lesson .lesson-stage-summary>span:last-of-type{border-bottom:0}.experience-upgrade.screen-lesson .mark-video-button{color:#d8c99f;border-top:1px solid #e1ede517;min-height:44px;margin:0;padding:9px 12px;font-size:.8125rem}.experience-upgrade.screen-lesson .lesson-flow-guide{border-radius:13px;width:calc(100% - 32px);margin:16px auto 18px;padding:10px}.experience-upgrade.screen-lesson .lesson-flow-guide>span b{font-size:.75rem}.experience-upgrade.screen-lesson .lesson-study-sequence,.experience-upgrade.screen-lesson .lesson-feedback{width:calc(100% - 24px)}.video-with-toolbar .route-footer .route-history-action{border-radius:11px;min-height:46px;padding:9px 7px;font-size:.8125rem}.video-with-toolbar .route-footer .route-continue{border-radius:11px;min-height:48px}}.remote-admin.admin-simple{--ink:#203138;--muted:#64747b;--line:#e1e7e9;--green:#286652;--green-dark:#215542;min-height:100dvh;color:var(--ink);font:400 1rem/1.6 var(--ui-font);background:#f5f7f9}.admin-simple *,.admin-simple :before,.admin-simple :after{box-sizing:border-box}.admin-simple :is(h1,h2,h3,p){overflow-wrap:anywhere}.admin-simple :is(h1,h2,h3){color:var(--ink);font-family:var(--ui-font);letter-spacing:0}.admin-simple a{text-decoration:none}.remote-admin.admin-simple :is(button,.admin-primary,.admin-secondary,.admin-more>summary){border:1px solid var(--line);color:#354c53;min-height:44px;font:600 .875rem/1.45 var(--ui-font);text-align:center;cursor:pointer;box-shadow:none;background:#f5f8f8;border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:10px 15px;transition:background .16s,border-color .16s;display:inline-flex}.remote-admin.admin-simple .admin-primary,.admin-simple :is(.editor-actions,.workspace-editor-heading)>button:first-of-type,.admin-simple .interaction-admin-form>button[type=submit]{color:#fff;background:#286652;border-color:#0000}.remote-admin.admin-simple :is(button,a)[aria-disabled=true],.remote-admin.admin-simple button:disabled{color:#7c878b;cursor:not-allowed;opacity:1;background:#edf1f2;border-color:#0000}.admin-simple :is(button,a,summary,input,select,textarea):focus-visible{outline-offset:3px;outline:2px solid #438a73}.admin-simple :is(input,select,textarea){color:#203138;width:100%;min-width:0;min-height:46px;font:400 1rem/1.5 var(--ui-font);box-shadow:none;background:#fff;border:1px solid #d3dde0;border-radius:10px;padding:11px 12px}.admin-simple textarea{resize:vertical}.admin-simple label{color:#344b52;flex-direction:column;gap:7px;margin:0 0 18px;font-size:.875rem;font-weight:550;display:flex}.admin-simple label small,.admin-simple label em{color:var(--muted);font-size:.8125rem;font-style:normal;font-weight:400;line-height:1.6}.admin-simple input:is([type=checkbox],[type=radio]){accent-color:#286652;width:20px;min-width:20px;height:20px;min-height:20px;margin:0;padding:0}.admin-simple input[type=file]{padding:8px;font-size:.875rem}.admin-simple input::file-selector-button{color:#285844;min-height:34px;font:inherit;cursor:pointer;background:#edf3f0;border:0;border-radius:7px;margin-right:10px;padding:6px 10px}.admin-simple .admin-check{flex-direction:row;align-items:center;min-height:44px}.admin-simple .admin-message{color:#36594b;overflow-wrap:anywhere;background:#eef5f1;border:1px solid #d8e4de;border-radius:12px;margin:16px 0;padding:13px 16px;font-size:.9375rem}.admin-topbar{border-bottom:1px solid var(--line);background:#fff;justify-content:space-between;align-items:center;gap:16px;padding:16px max(24px,50% - 590px);display:flex}.admin-brand{color:var(--ink);align-items:center;gap:10px;display:inline-flex}.admin-brand>span{color:#fff;width:36px;height:36px;font-family:var(--story-font);background:#286652;border-radius:11px;place-items:center;font-size:1.2rem;display:grid}.admin-brand b{white-space:nowrap;font-size:1.125rem}.admin-brand small{color:var(--muted);margin-left:10px;font-size:.875rem;font-weight:400}.admin-topbar nav{align-items:center;gap:12px;display:flex}.admin-topbar nav a{color:#455f68;align-items:center;min-height:44px;font-size:.875rem;display:inline-flex}.remote-admin.admin-simple .admin-topbar nav button{color:#64747b;background:0 0;border-color:#0000}.admin-home-shell,.admin-editor-shell{width:min(1180px,100%);margin:0 auto;padding:26px 24px 64px}.admin-view-nav{gap:8px;padding-bottom:22px;display:flex}.remote-admin.admin-simple :is(.admin-view-nav,.admin-editor-tabs,.admin-subtabs) button{color:#687980;background:0 0;border-color:#0000;font-weight:500}.remote-admin.admin-simple :is(.admin-view-nav,.admin-editor-tabs) button[aria-current],.remote-admin.admin-simple .admin-subtabs button[aria-pressed=true]{color:#245b48;background:#e6eeea;font-weight:650}.admin-home-heading,.admin-editor-header{justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px;display:flex}.admin-home-heading h1,.admin-editor-header h1{margin:0;font-size:clamp(1.5rem,3vw,1.875rem);font-weight:650;line-height:1.5}.admin-home-heading p{color:var(--muted);margin:5px 0 0;font-size:.875rem}.admin-home-heading>button{flex-shrink:0}.admin-story-list{border:1px solid var(--line);background:#fff;border-radius:18px;overflow:hidden}.admin-story-list>article{grid-template-columns:112px minmax(0,1fr) auto;align-items:center;gap:20px;padding:22px;display:grid}.admin-story-list>article+article{border-top:1px solid #edf0f2}.admin-simple .admin-story-list .cover.mini{aspect-ratio:16/9;border-radius:10px;width:112px;height:auto;min-height:0}.admin-story-copy{min-width:0}.admin-story-copy>div{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.admin-story-copy h2{margin:0;font-size:1.0625rem;font-weight:650;line-height:1.5}.admin-story-copy p{color:#62757c;margin:5px 0;font-size:.875rem}.admin-story-copy>small{color:#71838b;font-size:.8125rem;line-height:1.65;display:block}.admin-recommendations{gap:20px;display:grid}.admin-recommendations>.admin-home-heading{margin-bottom:4px}.admin-recommendation-panel{border:1px solid var(--line);background:#fff;border-radius:18px;padding:24px}.admin-recommendation-panel .admin-section-title{margin-bottom:16px}.admin-recommendation-list,.admin-recommendation-candidates{gap:0;display:grid}.admin-recommendation-list>article,.admin-recommendation-candidates>article{border-top:1px solid #edf0f2;align-items:center;gap:14px;padding:14px 0;display:grid}.admin-recommendation-list>article{grid-template-columns:34px 112px minmax(0,1fr) auto}.admin-recommendation-candidates>article{grid-template-columns:96px minmax(0,1fr) auto}.admin-recommendation-list>article:first-child,.admin-recommendation-candidates>article:first-child{border-top:0}.admin-recommendation-list .cover.mini{aspect-ratio:16/9;border-radius:9px;width:112px;height:auto;min-height:0}.admin-recommendation-candidates .cover.mini{aspect-ratio:16/9;border-radius:9px;width:96px;height:auto;min-height:0}.admin-recommendation-rank{color:#7e8e94;font-variant-numeric:tabular-nums;font-size:.8125rem}.admin-recommendation-list b,.admin-recommendation-candidates b{font-size:.9375rem;line-height:1.5;display:block}.admin-recommendation-list small,.admin-recommendation-candidates small{color:var(--muted);margin-top:4px;font-size:.8125rem;display:block}.admin-recommendation-actions{gap:5px;display:flex}.remote-admin.admin-simple .admin-recommendation-actions button{min-width:44px;padding-inline:10px}.admin-state{color:#626f77;white-space:nowrap;background:#edf1f3;border-radius:7px;align-items:center;width:fit-content;padding:3px 9px;font-size:.8125rem;display:inline-flex}.admin-state.live{color:#326449;background:#e9f3ec}.admin-empty{text-align:center;color:var(--muted);padding:38px 24px}.admin-empty h2{font-size:1.25rem}.admin-empty p{margin:8px 0 0}.remote-admin.admin-simple .admin-back{color:#64747b;background:0 0;border-color:#0000;margin:-8px 0 18px;padding-left:0}.admin-editor-header>div:first-child{min-width:0}.admin-editor-header h1{margin-top:7px}.admin-editor-actions{flex-wrap:wrap;flex-shrink:0;align-items:center;gap:8px;display:flex}.admin-save-hint{color:#7e6942;margin:-10px 0 20px;font-size:.875rem}.admin-editor-tabs{z-index:5;background:#f5f7f9;grid-template-columns:repeat(5,minmax(0,1fr));gap:5px;padding:10px 0 14px;display:grid;position:sticky;top:0}.admin-editor-tabs button span{color:inherit;opacity:.75;font-variant-numeric:tabular-nums;font-size:.8125rem}.admin-editor-content{border:1px solid var(--line);background:#fff;border-radius:18px;min-width:0;padding:28px}.admin-details-form>fieldset,.admin-dialog form>fieldset{border:0;min-width:0;margin:0;padding:0}.admin-section-title{margin-bottom:24px}.admin-section-title h2{margin:0;font-size:1.25rem;font-weight:650}.admin-section-title p{color:var(--muted);margin:6px 0 0;font-size:.875rem}.admin-basics-grid{grid-template-columns:minmax(220px,.8fr) minmax(0,1.6fr);gap:28px;display:grid}.admin-simple .cover-photo-field>div{aspect-ratio:16/9;border-radius:12px;height:auto;min-height:0;overflow:hidden}.admin-simple .cover-photo-field>div>img{object-fit:cover;width:100%;height:100%}.admin-simple .cover-photo-field em{font-size:.8125rem}.admin-fields-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;display:grid}.admin-fold{border-top:1px solid var(--line);margin:18px 0 0}.admin-fold>summary{color:#405a63;cursor:pointer;flex-wrap:wrap;align-items:center;gap:6px 14px;min-height:54px;padding:14px 0;font-size:.9375rem;font-weight:600;list-style:none;display:flex}.admin-fold>summary::-webkit-details-marker{display:none}.admin-fold>summary:after{content:"+";margin-left:auto;font-size:1.125rem;font-weight:400}.admin-fold[open]>summary:after{content:"−"}.admin-fold>summary>span{color:#70818a;font-size:.8125rem;font-weight:400}.admin-fold-content{padding:8px 0}.admin-save-bar{bottom:max(12px, env(safe-area-inset-bottom));z-index:6;border:1px solid var(--line);background:#fff;border-radius:14px;justify-content:space-between;align-items:center;gap:16px;margin-top:24px;padding:12px 14px;display:flex;position:sticky;box-shadow:0 4px 22px #1a2d350f}.admin-save-bar>span{color:#6e7f87;font-size:.875rem}.admin-video-panel{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:28px;display:grid}.admin-video-preview{aspect-ratio:16/9;background:#17282e;border-radius:12px;width:100%;position:relative;overflow:hidden}.admin-video-preview>:is(iframe,video,div){width:100%;height:100%}.admin-video-preview iframe{border:0}.admin-video-empty{text-align:center;color:#e2ebe5;flex-direction:column;justify-content:center;align-items:center;gap:6px;padding:20px;display:flex}.admin-video-empty p{color:#afc0bb;margin:0;font-size:.875rem}.admin-upload-form{min-width:0}.admin-upload-form h3{margin:0 0 18px;font-size:1.125rem}.admin-simple .stream-file-drop{text-align:center;background:#f7faf8;border-color:#d2dfda;border-radius:14px;padding:24px 16px}.admin-simple .stream-file-drop b{overflow-wrap:anywhere;font-size:1rem}.admin-simple .stream-file-drop small{margin-top:5px}.admin-simple .stream-hint,.admin-simple .stream-upload-state p{line-height:1.65;font-size:.875rem!important}.admin-simple .stream-upload-state{grid-template-columns:minmax(0,1fr) auto}.admin-simple .stream-upload-state>span{font-size:.8125rem}.admin-simple .stream-upload-state>span:first-child{text-align:left;grid-column:1/-1}.admin-simple .stream-upload-state progress{accent-color:#286652;width:100%;height:6px}.admin-simple .admin-upload-form>button{width:100%}.admin-interactions-panel{grid-template-columns:minmax(240px,.8fr) minmax(0,1.3fr);align-items:start;gap:24px;display:grid}.admin-interaction-video{position:sticky;top:85px}.admin-interaction-video p,.admin-interaction-video>span{color:var(--muted);margin:12px 0 0;font-size:.875rem}.admin-subtabs{gap:8px;margin-bottom:20px;display:flex}.admin-simple .lesson-edit-interactions{background:0 0;border:0;margin:0;padding:0}.admin-simple .lesson-edit-interactions>header{flex-wrap:wrap;align-items:center;gap:12px}.admin-simple .lesson-edit-interactions>header h3{margin:0;font-size:1.125rem}.admin-simple .lesson-edit-interactions>header small{font-size:.8125rem}.admin-simple .lesson-edit-interactions>header>div>span{display:none}.admin-simple .interaction-admin-list article{grid-template-columns:60px minmax(0,1fr) auto;gap:10px}.admin-simple .interaction-admin-list .interaction-delete{grid-column:3}.admin-simple .interaction-admin-form fieldset{min-width:0}.admin-simple .interaction-admin-form :is(label,small,legend,p){font-size:.875rem}.admin-simple .interaction-admin-form input{font-size:1rem}.admin-simple .interaction-form-row{flex-direction:column;align-items:stretch;display:flex}.admin-simple .interaction-active-toggle{flex-direction:row;align-items:center;gap:10px;display:flex}.admin-simple .workspace-content-panel{box-shadow:none;background:0 0;border:0;padding:0}.admin-simple .workspace-editor-heading{margin-bottom:24px}.admin-simple .workspace-editor-heading h2{margin:0;font-size:1.25rem}.admin-simple .workspace-editor-heading p{color:var(--muted);margin:7px 0 14px;font-size:.875rem;line-height:1.6}.admin-simple :is(.quiz-edit-form,.knowledge-edit-form){border:1px solid var(--line);background:#fafbfc;border-radius:14px;margin:0;padding:22px}.admin-simple :is(.quiz-edit-form,.knowledge-edit-form) h3{margin-top:0;font-size:1.125rem}.admin-simple :is(.quiz-edit-form,.knowledge-edit-form)>fieldset{border:0;min-width:0;margin:0;padding:0}.admin-simple .editor-actions{gap:10px;margin-top:20px;display:flex}.admin-simple :is(.workspace-quiz-panel>ol,.knowledge-editor-list){gap:0;margin:0;padding:0;list-style:none;display:grid}.admin-simple :is(.workspace-quiz-panel>ol,.knowledge-editor-list)>li{border:0;border-bottom:1px solid var(--line);background:0 0;border-radius:0;grid-template-columns:32px minmax(0,1fr);align-items:start;gap:14px;padding:20px 0;display:grid}.admin-simple :is(.workspace-quiz-panel>ol,.knowledge-editor-list)>li>i{color:#60757c;width:32px;min-width:32px;height:32px;font:500 .875rem/32px var(--ui-font);text-align:center;background:#edf2f3;border:0;border-radius:50%;padding:0}.admin-simple :is(.workspace-quiz-panel>ol,.knowledge-editor-list) b{font-size:1rem;font-weight:600;display:block}.admin-simple :is(.workspace-quiz-panel>ol,.knowledge-editor-list) small{color:var(--muted);margin-top:5px;font-size:.8125rem;display:block}.admin-simple .quiz-row-actions{align-items:center;gap:8px;margin-top:12px;display:flex}.admin-simple .danger-text{color:#975645}.admin-more{position:relative}.admin-more>summary{list-style:none}.admin-more>summary::-webkit-details-marker{display:none}.admin-more>summary>span{color:#8a999f}.admin-more-items{z-index:20;border:1px solid var(--line);background:#fff;border-radius:13px;gap:4px;min-width:160px;padding:7px;display:grid;position:absolute;top:calc(100% + 6px);right:0;box-shadow:0 12px 35px #1a2d351f}.admin-more:not([open])>.admin-more-items{display:none}.admin-simple .quiz-row-actions .admin-more-items{left:0;right:auto}.remote-admin.admin-simple .admin-more-items>button{white-space:nowrap;background:0 0;border-color:#0000;justify-content:flex-start}.admin-simple .admin-publish-details{margin-top:18px}.admin-simple .publish-check-panel{background:0 0;border:0;padding:0 0 18px}.admin-simple .publish-check-panel :is(p,li,small){font-size:.875rem}.admin-settings-list{border:1px solid var(--line);background:#fff;border-radius:16px;padding:0 22px}.admin-settings-list article{align-items:center;gap:14px;padding:20px 0;display:flex}.admin-settings-list article+article{border-top:1px solid var(--line)}.admin-settings-list article>span{color:#fff;border-radius:10px;place-items:center;width:36px;height:36px;display:grid}.admin-settings-list h2{flex:1;margin:0;font-size:1rem;font-weight:600}.admin-settings-list small{color:var(--muted);font-size:.875rem}.admin-insights-view>.admin-fold{border:1px solid var(--line);background:#fff;border-radius:14px;padding:0 20px}.admin-simple .learning-dashboard{margin-top:0}.admin-simple .learning-dashboard :is(p,small,th,td),.admin-simple .learner-admin-list small{font-size:.875rem}.admin-simple .admin-invite-note{color:var(--muted);padding:10px 0 18px;font-size:.875rem}.admin-dialog{color:#203138;background:#fff;border:1px solid #dfe5e8;border-radius:20px;width:min(540px,100% - 32px);max-height:calc(100dvh - 40px);margin:auto;padding:0;overflow:auto;box-shadow:0 24px 90px #0f232b33}.admin-dialog::backdrop{background:#1021286b}.admin-dialog-body{padding:32px;position:relative}.remote-admin.admin-simple .admin-dialog-close{background:0 0;border-color:#0000;width:44px;padding:0;font-size:1.5rem;font-weight:400;position:absolute;top:12px;right:12px}.admin-dialog h2{margin:0 42px 12px 0;font-size:1.5rem}.admin-dialog form>p{color:#64747b;margin:0 0 24px;font-size:.875rem}.admin-dialog-actions{justify-content:flex-end;gap:10px;margin-top:24px;display:flex}.admin-answer-row{align-items:center;gap:12px;margin-bottom:12px;display:flex}.admin-simple .admin-answer-key{flex-direction:row;align-items:center;gap:10px;min-width:62px;min-height:44px;margin:0}.admin-simple .admin-answer-copy{flex:1;min-width:0;margin:0}.admin-answer-hint{color:var(--muted);margin:18px 0 12px;font-size:.875rem}@media (hover:hover){.remote-admin.admin-simple :is(button,.admin-secondary,.admin-more>summary):hover:not(:disabled){background:#eaf0ef;border-color:#c9d8d3}.remote-admin.admin-simple .admin-primary:hover:not(:disabled){background:#215945;border-color:#0000}}@media (width<=900px){.admin-editor-header{flex-direction:column;align-items:flex-start}.admin-video-panel,.admin-interactions-panel{grid-template-columns:minmax(0,1fr)}.admin-interaction-video{max-width:600px;position:static}}@media (width<=600px){.admin-topbar{gap:10px;padding:10px 16px}.admin-brand small{margin:0;font-size:.8125rem;display:block}.admin-brand b{font-size:1rem}.admin-topbar nav{gap:4px}.remote-admin.admin-simple .admin-topbar nav button{padding-inline:8px}.admin-home-shell,.admin-editor-shell{padding:18px 16px 40px}.admin-view-nav{gap:4px;padding-bottom:16px}.remote-admin.admin-simple .admin-view-nav button{padding-inline:12px}.admin-home-heading{gap:12px}.admin-home-heading h1{font-size:1.5rem}.admin-story-list>article{grid-template-columns:84px minmax(0,1fr);align-items:start;gap:12px;padding:18px 16px}.admin-simple .admin-story-list .cover.mini{width:84px}.admin-story-copy h2{font-size:1rem}.admin-story-copy>div{gap:6px}.admin-story-list>article>button{grid-column:1/-1;width:100%}.admin-view-nav{scrollbar-width:none;overflow-x:auto}.admin-view-nav::-webkit-scrollbar{display:none}.remote-admin.admin-simple .admin-view-nav button{flex:none}.admin-recommendation-panel{padding:18px 16px}.admin-recommendation-list>article{grid-template-columns:28px 82px minmax(0,1fr);gap:10px}.admin-recommendation-list .cover.mini{width:82px}.admin-recommendation-actions{grid-column:2/-1}.admin-recommendation-actions button:last-child{margin-left:auto}.admin-recommendation-candidates>article{grid-template-columns:76px minmax(0,1fr);gap:10px}.admin-recommendation-candidates .cover.mini{width:76px}.admin-recommendation-candidates>article>button{grid-column:1/-1;width:100%}.admin-editor-header{gap:16px;margin-bottom:16px}.admin-editor-actions{width:100%}.admin-editor-actions>:is(a,button){flex:1}.admin-editor-tabs{gap:2px}.remote-admin.admin-simple .admin-editor-tabs button{flex-direction:column;gap:1px;min-width:0;padding:9px 2px;font-size:.875rem}.admin-editor-tabs button span{font-size:.75rem}.admin-editor-content{border-radius:15px;padding:20px 16px}.admin-basics-grid{grid-template-columns:minmax(0,1fr);gap:0}.admin-fields-row{gap:14px}.admin-simple .cover-photo-field>div{max-height:240px}.admin-save-bar{gap:10px;padding:10px}.admin-save-bar>span{font-size:.8125rem}.admin-fold>summary>span{flex-basis:70%}.admin-simple :is(.quiz-edit-form,.knowledge-edit-form){padding:16px 12px}.admin-simple .editor-actions{grid-template-columns:1fr 1fr;display:grid}.admin-simple .knowledge-highlight-fields,.admin-simple .knowledge-source-fields{grid-template-columns:minmax(0,1fr)}.admin-simple .lesson-edit-interactions>header{align-items:flex-start}.admin-simple .interaction-time-input{flex-direction:column;display:flex}.admin-dialog-body{padding:26px 20px}.admin-dialog-actions{grid-template-columns:auto minmax(0,1fr);display:grid}}@media (width<=370px){.admin-fields-row{grid-template-columns:minmax(0,1fr);gap:0}.admin-topbar nav a{font-size:.8125rem}.admin-home-heading{flex-direction:column;align-items:flex-start}}@media (prefers-reduced-motion:reduce){.admin-simple *{scroll-behavior:auto;transition:none}}.challenge-page{--challenge-gold:#d9bd87;--challenge-muted:#b4c0bc;color:#f3f1e8;background:radial-gradient(at 60% 0,#243438 0,#102029 45%,#09151f 100%);min-height:100svh;padding:0 0 64px;font-family:PingFang SC,Microsoft YaHei,sans-serif}.challenge-page *{box-sizing:border-box}.challenge-page button,.challenge-page a{touch-action:manipulation}.challenge-page button{font:inherit;cursor:pointer}.challenge-page button:disabled{opacity:.65;cursor:not-allowed}.challenge-page button:focus-visible,.challenge-page a:focus-visible{outline-offset:4px;outline:2px solid #f0c889}.challenge-page h1:focus{outline:none}.challenge-page .challenge-shell{width:min(1180px,100% - 48px);margin:0 auto;padding:1px 0 30px}.challenge-page .learner-header .desktop-header-nav a{white-space:nowrap}.challenge-eyebrow{color:#b8b59f;letter-spacing:2px;justify-content:space-between;gap:16px;margin:32px 0;font-size:11px;display:flex}.challenge-eyebrow>span:first-child{color:#dfc899}.challenge-intro{text-align:center;margin:38px 0 34px}.challenge-kicker{letter-spacing:3px;color:#bcc4ba;font-size:12px}.challenge-page .challenge-intro h1{letter-spacing:.14em;color:#f3ecdc;margin:15px 0 12px;font:500 clamp(40px,5.8vw,64px)/1.3 Songti SC,SimSun,serif}.challenge-intro>p{color:var(--challenge-muted);margin:0;font-size:14px;line-height:1.8}.challenge-rules{color:#afbab5;flex-wrap:wrap;justify-content:center;align-items:center;gap:0;margin:24px 0 0;font-size:12px;display:flex}.challenge-rules>span{border-right:1px solid #c8d4cf24;padding:0 20px;line-height:1.8}.challenge-rules>span:last-child{border-right:0}.challenge-page .challenge-rules b{color:#e0ccaa;margin-right:5px;font-weight:500}.challenge-categories{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;display:grid}.challenge-category{isolation:isolate;background:#15262d;border:1px solid #d7d2b92e;border-radius:14px;min-width:0;transition:border-color .2s,transform .2s;position:relative;overflow:hidden}@media (hover:hover){.challenge-category:hover{border-color:#d2b27899;transform:translateY(-4px)}}.challenge-category>img{object-fit:cover;z-index:-2;opacity:.75;width:100%;height:100%;position:absolute;inset:0}.challenge-category-shade{z-index:-1;background:linear-gradient(#101b2505 0%,#0c1c2666 25%,#101f2bf2 57%,#101e29 100%);position:absolute;inset:0}.challenge-category-copy{flex-direction:column;min-height:380px;padding:25px 26px 18px;display:flex}.challenge-category-copy>small{letter-spacing:2px;color:#eee6cf;text-shadow:0 1px 8px #000;margin-bottom:100px;font-size:10px}.challenge-page .challenge-category h2{letter-spacing:2px;color:#faf5e9;margin:0;font:500 26px/1.5 Songti SC,SimSun,serif}.challenge-category p{color:#bfcac5;margin:8px 0 18px;font-size:12px;line-height:1.7}.challenge-personal{color:#d5c7a8;margin:0 0 20px;font-size:11px}.challenge-page .challenge-primary,.challenge-page .challenge-category-copy>button:not(.challenge-text-button){color:#15242a;background:#d9bd87;border:1px solid #e6cf9f;border-radius:7px;min-height:48px;padding:13px 21px;font-size:14px;font-weight:650;line-height:1.5;transition:background .15s}@media (hover:hover){.challenge-page .challenge-primary:not(:disabled):hover,.challenge-page .challenge-category-copy>button:not(.challenge-text-button):hover{background:#efdaa9}}.challenge-category-copy>button:not(.challenge-text-button){text-align:left;margin-top:auto}.challenge-category-copy>button>span{float:right}.challenge-page .challenge-text-button{color:#c7cebd;background:0 0;border:0;border-radius:6px;min-height:44px;margin-top:7px;padding:10px;font-size:12px}.challenge-text-button:hover{text-decoration:underline}.challenge-footnote{letter-spacing:1px;text-align:center;color:#aab7b3;margin:26px 0 0;font-size:11px;line-height:1.8}.challenge-page .challenge-back{color:#b9c5be;text-align:left;background:0 0;border:0;min-height:44px;padding:8px 0;font-size:12px}.challenge-section-title{flex-wrap:wrap;align-items:baseline;gap:16px;margin:18px 0 26px;display:flex}.challenge-section-title>p{color:#ccba96;letter-spacing:2px;order:2;margin:0;font-size:12px}.challenge-page .challenge-section-title h1{letter-spacing:2px;color:#f6efdf;margin:0;scroll-margin-top:100px;font:500 clamp(28px,3vw,38px)/1.5 Songti SC,SimSun,serif}.challenge-ready{text-align:center;background:linear-gradient(145deg,#26383e80,#12212b);border:1px solid #d7d2b92e;border-radius:14px;padding:38px 24px}.challenge-page .challenge-ready-number{color:var(--challenge-gold);font-variant-numeric:tabular-nums;font:400 72px/1.1 Georgia,serif}.challenge-ready-number small{letter-spacing:3px;color:#c3bda9;margin-top:6px;font:12px/2.5 sans-serif;display:block}.challenge-page .challenge-ready h2{color:#eee9dc;margin:22px 0 14px;font:400 clamp(20px,2vw,26px)/1.6 Songti SC,SimSun,serif}.challenge-ready>p{color:#bdc8c1;margin:0;font-size:13px;line-height:2}.challenge-ready .challenge-primary{min-width:240px;margin:24px 0 16px}.challenge-ready .challenge-fine{color:#aab6b0;font-size:11px}.challenge-play{grid-template-columns:minmax(0,1fr) 200px;align-items:start;gap:28px;display:grid}.challenge-question{background:linear-gradient(145deg,#22343b,#14252f);border:1px solid #d8cfad2e;border-radius:14px;min-width:0;padding:30px}.challenge-question-meta{color:#aebeb8;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;font-size:12px;display:flex}.challenge-page .challenge-question-meta b{color:#e5cea5;font-variant-numeric:tabular-nums;font-weight:600}.challenge-page .challenge-question h2{letter-spacing:.01em;color:#f6f0e2;overflow-wrap:anywhere;margin:28px 0;font:500 clamp(22px,2.6vw,29px)/1.7 Songti SC,SimSun,serif}.challenge-options{gap:12px;display:grid}.challenge-page .challenge-options button{color:#f0f0e5;text-align:left;background:#12242ee6;border:1px solid #b4c0b647;border-radius:9px;align-items:center;gap:16px;width:100%;min-width:0;min-height:64px;padding:14px 18px;font-size:15px;line-height:1.65;transition:background .15s,border-color .15s;display:flex}.challenge-options .challenge-option-letter{color:#e2c899;background:#d9bd8712;border:1px solid #d9bd873b;border-radius:7px;flex:0 0 30px;place-items:center;height:30px;font:16px/1 Georgia,serif;display:grid}.challenge-options .challenge-option-text{overflow-wrap:anywhere;min-width:0;color:inherit;flex:1}.challenge-page .challenge-options .challenge-option-mark{color:#bce1bf;margin-left:auto;font-weight:700}@media (hover:hover){.challenge-page .challenge-options button:not(:disabled):hover{background:#2c3c40;border-color:#e1c38d}}.challenge-page .challenge-options .is-selected{background:#354144;border-color:#e8ca8a;box-shadow:0 0 0 1px #e8ca8a44}.challenge-page .challenge-options .is-correct{color:#f3f8ee;opacity:1;background:#254237;border-color:#9cc4a0}.challenge-saving{color:#e3c78e;margin:0 0 12px;font-size:12px}.challenge-timer{color:var(--challenge-gold);background:#162731b3;border:1px solid #d8cfad26;border-radius:14px;flex-direction:column;justify-content:center;align-self:start;align-items:center;padding:26px 16px;display:flex;position:sticky;top:100px}.challenge-timer svg{width:90px;height:133px;margin:2px 0 18px}.challenge-page .challenge-timer strong{font-variant-numeric:tabular-nums;color:var(--challenge-gold);font:400 52px/1.15 Georgia,serif}.challenge-timer>span{color:#c3c3af;margin:12px 0 20px;font-size:11px;line-height:1.6}.challenge-timer progress{accent-color:#d9bd87;border:0;border-radius:99px;width:100%;max-width:120px;height:5px;overflow:hidden}.challenge-timer progress::-webkit-progress-bar{background:#344348;border-radius:99px}.challenge-timer progress::-webkit-progress-value{background:#d9bd87;border-radius:99px}.challenge-timer.is-urgent{color:#f5a38a;border-color:#e6a08988}.challenge-page .challenge-timer.is-urgent strong{color:#f5a38a}.challenge-timer.is-urgent progress{accent-color:#f5a38a}.challenge-timer.is-urgent progress::-webkit-progress-value{background:#f5a38a}.challenge-explanation{border-top:1px solid #e1e7d923;margin-top:24px;padding-top:22px}.challenge-page .challenge-explanation>b{color:#bcd6b4;font-size:14px;font-weight:600}.challenge-explanation>p{color:#cbd5c7;margin:12px 0 18px;font-size:14px;line-height:1.9}.challenge-explanation .challenge-primary{width:100%}.challenge-board{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);align-items:start;gap:26px;display:grid}.challenge-board:not(:has(.challenge-result)){grid-template-columns:1fr;max-width:800px;margin:auto}.challenge-result,.challenge-ranking{background:linear-gradient(145deg,#22343b,#14252f);border:1px solid #d8cfad2e;border-radius:14px;min-width:0;padding:30px}.challenge-page .challenge-result-label{color:#d9c9a4;font-size:14px}.challenge-page .challenge-result>strong{color:#e4c68f;font-variant-numeric:tabular-nums;margin:18px 0 6px;font:400 80px/1.2 Georgia,serif;display:block}.challenge-result>strong small{color:#c9c6b2;margin-left:10px;font:14px/1.5 sans-serif}.challenge-result-caption{color:#aebfb3;margin:8px 0 22px;font-size:12px;line-height:1.8}.challenge-result-answer{border-top:1px solid #e4e4d621;margin-top:20px;padding-top:20px}.challenge-result-answer>small{color:#aebfb3;font-size:11px}.challenge-page .challenge-result-answer>b{color:#e9e2cd;margin:9px 0;font-size:17px;font-weight:500;line-height:1.6;display:block}.challenge-result-answer>p{color:#c0ccc1;margin:0;font-size:13px;line-height:1.9}.challenge-result .challenge-primary{width:100%;margin-top:25px}.challenge-page .challenge-ranking h2{color:#f0e7d2;margin:0 0 12px;font:500 24px/1.5 Songti SC,SimSun,serif}.challenge-ranking h2 small{letter-spacing:2px;color:#d2bc8e;float:right;margin-top:7px;font:10px/2 sans-serif}.challenge-ranking>p{color:#aebfb7;margin:0 0 14px;font-size:12px;line-height:1.8}.challenge-ranking ol{margin:8px 0 20px;padding:0;list-style:none}.challenge-ranking li{border-bottom:1px solid #e2e6da1a;align-items:center;gap:18px;padding:17px 10px;font-size:14px;display:flex}.challenge-ranking li>span{color:#ccb88c;font-variant-numeric:tabular-nums;flex-shrink:0;font:20px/1.2 Georgia,serif}.challenge-page .challenge-ranking li>b{overflow-wrap:anywhere;color:#e1e9df;flex:1;min-width:0;font-weight:400;line-height:1.5}.challenge-page .challenge-ranking li>strong{white-space:nowrap;color:#e4c68f;font-variant-numeric:tabular-nums}.challenge-ranking li small{color:#c2c8b9;margin-left:7px;font-size:11px;font-weight:400}.challenge-ranking li em{color:#e8cd91;border:1px solid #d4bb8547;border-radius:4px;margin-left:8px;padding:0 5px;font:10px/1.8 sans-serif;display:inline-block}.challenge-ranking .is-me{background:#d3c0880c;border-radius:6px}.challenge-empty{text-align:center;color:#afc0b6;padding:44px 14px;font-size:14px;line-height:2}.challenge-error{color:#f3c6b0;background:#51372d45;border:1px solid #c88a6a80;border-radius:9px;margin:0 0 24px;padding:18px 20px;line-height:1.7}.challenge-error>p{margin:0 0 12px;font-size:13px}.challenge-page .challenge-error button,.challenge-page .challenge-ranking button:not(.challenge-primary){color:#e8d8b5;background:#11232bc7;border:1px solid #c3b58a80;border-radius:6px;min-height:44px;margin-right:10px;padding:10px 18px;font-size:13px}@media (width<=1000px) and (width>=761px){.challenge-page .challenge-shell{width:calc(100% - 40px)}.challenge-categories{gap:15px}.challenge-category-copy{padding:22px 20px 16px}.challenge-page .challenge-category h2{letter-spacing:1px;font-size:23px}.challenge-play{grid-template-columns:minmax(0,1fr) 150px;gap:20px}.challenge-timer{padding:24px 12px}}@media (width<=760px){.challenge-page{padding:0 0 calc(90px + env(safe-area-inset-bottom));background-attachment:scroll}.challenge-page .challenge-shell{width:calc(100% - 32px);padding-bottom:10px}.challenge-eyebrow{letter-spacing:1px;margin:22px 0;font-size:10px}.challenge-intro{margin:26px 0}.challenge-page .challenge-intro h1{letter-spacing:5px;margin:13px 0 9px;font-size:42px}.challenge-kicker{letter-spacing:2px;font-size:11px}.challenge-intro>p{font-size:13px}.challenge-rules{gap:8px 0;margin-top:19px;font-size:10px}.challenge-rules>span{padding:0 10px}.challenge-rules b{margin-right:3px}.challenge-categories{grid-template-columns:1fr;gap:16px}.challenge-category-copy{min-height:300px;padding:22px 23px 16px}.challenge-category-copy>small{margin-bottom:46px}.challenge-page .challenge-category h2{font-size:27px}.challenge-category p{margin:6px 0 13px}.challenge-personal{margin-bottom:18px}.challenge-category-shade{background:linear-gradient(#11202b15,#101f2bbf 33%,#101e29 72%)}.challenge-footnote{letter-spacing:.3px;margin:22px 0;font-size:10px}.challenge-section-title{gap:7px 14px;margin:12px 0 19px}.challenge-section-title>p{font-size:11px}.challenge-page .challenge-section-title h1{scroll-margin-top:78px;font-size:28px}.challenge-ready{padding:30px 18px}.challenge-page .challenge-ready-number{font-size:65px}.challenge-page .challenge-ready h2{font-size:20px}.challenge-ready>p{font-size:12px}.challenge-ready .challenge-primary{width:100%;min-width:0;margin:24px 0 14px}.challenge-play{flex-direction:column;gap:14px;display:flex}.challenge-timer{top:calc(58px + env(safe-area-inset-top));z-index:20;background:#172a34fa;border-radius:10px;order:-1;grid-template-columns:38px 48px minmax(0,1fr) 56px;align-items:center;gap:10px;width:100%;padding:10px 13px;display:grid;position:sticky;box-shadow:0 8px 20px #07101755}.challenge-timer svg{width:33px;height:52px;margin:0}.challenge-page .challenge-timer strong{font-size:34px}.challenge-timer>span{margin:0;font-size:10px;line-height:1.6}.challenge-timer progress{width:56px;height:4px}.challenge-question{border-radius:12px;width:100%;padding:22px 17px}.challenge-question-meta{gap:8px;font-size:11px}.challenge-page .challenge-question h2{margin:22px 0;font-size:22px;line-height:1.65}.challenge-options{gap:11px}.challenge-page .challenge-options button{gap:12px;min-height:62px;padding:13px 12px;font-size:14px}.challenge-options .challenge-option-letter{flex-basis:27px;height:27px;font-size:14px}.challenge-explanation{margin-top:21px;padding-top:20px}.challenge-explanation>p{font-size:13px}.challenge-board{grid-template-columns:1fr;gap:18px}.challenge-result,.challenge-ranking{border-radius:12px;padding:25px 20px}.challenge-page .challenge-result>strong{font-size:68px}.challenge-ranking li{gap:13px;padding:16px 5px}.challenge-ranking li>b{font-size:13px}.challenge-error{margin-bottom:18px;padding:16px}.challenge-error>p{font-size:12px}}@media (width<=360px){.challenge-rules>span{padding:0 7px}.challenge-timer{grid-template-columns:34px 44px minmax(0,1fr);gap:8px}.challenge-timer progress{display:none}.challenge-page .challenge-options button{gap:9px}}@media (prefers-reduced-motion:reduce){.challenge-category,.challenge-page .challenge-options button{transition:none}.challenge-category:hover{transform:none}}.challenge-page.zhiye-v3 .learner-header.site-header{width:min(1180px,100% - 48px);height:76px;box-shadow:none;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#182a317a;border:0;border-bottom:1px solid #d9bd871f;border-radius:0;gap:24px;margin:0 auto;padding:0}.challenge-page.zhiye-v3 .learner-header .logo b{color:#eee4cd}.challenge-page.zhiye-v3 .learner-header .logo small{color:#bbbaaa}.challenge-page.zhiye-v3 .learner-header.site-header .desktop-header-nav{box-shadow:none;background:0 0;border:0;align-items:center;gap:5px;margin-left:8px;padding:0}.challenge-page.zhiye-v3 .learner-header.site-header nav a{color:#b9c3ba;background:0 0;border:1px solid #0000;border-radius:7px;min-width:72px;height:40px;padding:0 17px;font-size:13px;line-height:1;transition:background .15s,color .15s}.challenge-page.zhiye-v3 .learner-header.site-header nav a:after{display:none}.challenge-page.zhiye-v3 .learner-header.site-header nav a.active{color:#e8d0a0;box-shadow:none;background:#d9bd8714;border-color:#d9bd872e}.challenge-page.zhiye-v3 .learner-header .avatar{color:#dfc898;box-shadow:none;background:#d9bd8717;border:1px solid #d9bd873d}.challenge-page.zhiye-v3 .learner-header .user-login-link{color:#ddd0b5;background:#d9bd870d;border:1px solid #d9bd8740;border-radius:7px;align-items:center;min-height:38px;padding:0 14px;font-size:12px;text-decoration:none;display:inline-flex}@media (hover:hover){.challenge-page.zhiye-v3 .learner-header.site-header nav a:hover{color:#f1e5ca;background:#d9bd870f}}@media (width<=1000px) and (width>=901px){.challenge-page.zhiye-v3 .learner-header.site-header{gap:18px;width:calc(100% - 40px)}.challenge-page.zhiye-v3 .learner-header.site-header nav a{padding:0 13px}}@media (width<=900px){.challenge-page{padding-bottom:calc(100px + env(safe-area-inset-bottom))}.challenge-page.zhiye-v3 .learner-header.site-header{width:100%;height:calc(62px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 16px 0;background:#182a31db;gap:10px;margin:0}.challenge-page.zhiye-v3 .mobile-bottom-nav{background:#0d1d26fa;border-top-color:#d9bd8729}.challenge-page.zhiye-v3 .mobile-bottom-nav a{color:#9eafa8}.challenge-page.zhiye-v3 .mobile-bottom-nav a.active{color:#e8d0a0;background:#d9bd870f}.challenge-page.zhiye-v3 .mobile-bottom-nav a.active:after{background:#d9bd87}.challenge-page .challenge-timer{top:calc(72px + env(safe-area-inset-top))}}@media (width<=760px){.challenge-page.zhiye-v3 .learner-header.site-header{height:calc(58px + env(safe-area-inset-top))}.challenge-page .challenge-timer{top:calc(58px + env(safe-area-inset-top))}}@media (prefers-reduced-motion:reduce){.challenge-page.zhiye-v3 .learner-header.site-header nav a{transition:none}}.challenge-page .friend-invite-banner{background:linear-gradient(100deg,#d9bd8710,#142731b3);border:1px solid #d9bd8740;border-radius:12px;justify-content:space-between;align-items:center;gap:22px;margin:0 0 28px;padding:19px 24px;display:flex}.friend-invite-banner>div{min-width:0}.challenge-page .friend-invite-banner b{color:#f0dfbb;font-size:16px;font-weight:500}.friend-invite-banner p{color:#b4c4bb;margin:6px 0 0;font-size:12px;line-height:1.7}.challenge-page .friend-invite-banner>a{color:#ecd3a0;background:#d9bd870a;border:1px solid #d9bd8770;border-radius:7px;flex-shrink:0;justify-content:center;align-items:center;min-height:44px;padding:10px 18px;font-size:13px;text-decoration:none;display:flex}.friend-page .challenge-eyebrow>a{color:#c9c7b2;letter-spacing:1px;align-items:center;min-height:28px;font-size:11px;text-decoration:none;display:inline-flex}.friend-entry-grid{grid-template-columns:1fr 1fr;gap:24px;display:grid}.friend-entry,.friend-lobby,.friend-finish{background:linear-gradient(145deg,#22343b,#14252f);border:1px solid #d7d2b92e;border-radius:14px;padding:30px}.friend-entry{flex-direction:column;align-items:stretch;display:flex}.friend-step{color:#d1bd95;letter-spacing:2px;font-size:10px}.challenge-page .friend-entry h2,.challenge-page .friend-lobby h2{color:#f4ecda;margin:18px 0 10px;font:500 26px/1.5 Songti SC,serif}.friend-entry>p,.friend-lobby>p{color:#b9c6bb;margin:0 0 24px;font-size:13px;line-height:1.8}.friend-page label{color:#c5cebe;margin-bottom:10px;font-size:12px;display:block}.friend-page input,.friend-page select{color:#f0ecdc;outline-offset:4px;background:#10232d;border:1px solid #b4c0b647;border-radius:7px;width:100%;min-width:0;min-height:48px;padding:12px 14px;font:14px/1.5 PingFang SC,Microsoft YaHei,sans-serif}.friend-page input::placeholder{color:#91a39d}.friend-page select option{color:#f0ecdc;background:#14252f}.friend-entry .challenge-primary,.friend-entry .friend-secondary{margin-top:22px}.challenge-page .friend-secondary{color:#e7d6ac;background:#d9bd8709;border:1px solid #dac79880;border-radius:7px;min-height:48px;padding:13px 21px;font-size:14px;font-weight:500;line-height:1.5}.friend-scoreboard{background:#1528319c;border:1px solid #d7d2b92e;border-radius:12px;grid-template-columns:1fr 1fr;gap:40px;margin-bottom:24px;padding:18px 24px;display:grid;position:relative}.friend-player{align-items:center;gap:14px;min-width:0;display:flex}.friend-player-avatar{color:#d8c297;background:#d9bd870e;border:1px solid #d9bd8733;border-radius:50%;flex:0 0 42px;place-items:center;height:42px;font:20px/1 serif;display:grid}.friend-player>div{flex:1;min-width:0}.challenge-page .friend-player b{color:#e7e9dc;overflow-wrap:anywhere;font-size:14px;font-weight:500;line-height:1.5;display:block}.friend-player small{color:#aabcae;margin-top:5px;font-size:11px;display:block}.challenge-page .friend-player>strong{color:#e5c68e;font-variant-numeric:tabular-nums;font:28px/1.2 Georgia,serif}.friend-versus{color:#c5b58f;font:11px/1 Georgia,serif;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.friend-player.is-me .friend-player-avatar{border-color:#d9bd8777}.friend-lobby h2{margin-top:0!important}.friend-room-code{flex-wrap:wrap;align-items:center;gap:16px;margin:18px 0 24px;display:flex}.friend-room-code>small{color:#aabbb1;font-size:11px}.challenge-page .friend-room-code>b{color:#e8d3a6;letter-spacing:2px;overflow-wrap:anywhere;font:500 19px/1.6 monospace}.friend-room-code .challenge-primary{margin-left:auto}.friend-page #friend-invite-url{color:#bfc9b8;font:12px/1.5 monospace}.friend-ready-line{justify-content:space-between;align-items:center;gap:24px;margin-top:24px;display:flex}.friend-ready-line p{color:#b3c3b6;margin:0;font-size:12px;line-height:1.9}.friend-ready-line button{flex-shrink:0;min-width:190px}.friend-round{max-width:900px;margin:auto}.friend-round .challenge-question{margin-top:16px}.friend-round .challenge-question>h2{margin-top:0}.friend-clock{color:#d9bd87;z-index:20;background:#162a34;border:1px solid #d7d2b92e;border-radius:10px;align-items:center;gap:12px;padding:13px 20px;display:flex;position:sticky;top:90px;box-shadow:0 7px 20px #07121b33}.friend-clock>span{color:#b4c3b6;font-size:12px}.challenge-page .friend-clock>strong{color:#e5c68e;font-variant-numeric:tabular-nums;min-width:62px;font:28px/1.3 Georgia,serif}.friend-clock strong small{color:#b4c3b6;margin-left:6px;font:10px/1 sans-serif}.friend-clock-status{margin-left:auto}.friend-clock.is-urgent,.challenge-page .friend-clock.is-urgent>strong{color:#f2a68b}.friend-clock.is-urgent{border-color:#e6a08988}.friend-countdown{text-align:center;padding:45px 20px}.challenge-page .friend-countdown h2{color:#f1ead8;font:400 23px/1.5 serif}.friend-countdown p{color:#b3c3b6;font-size:13px}.friend-submitted{color:#d9cea9;border-top:1px solid #d7d2b91e;margin:20px 0 0;padding-top:17px;font-size:12px;line-height:1.8}.challenge-page .challenge-options .friend-wrong{background:#472f2e;border-color:#c7826c}.friend-answer-results{flex-wrap:wrap;gap:9px;margin-top:13px;display:flex}.friend-answer-results>span{color:#c8d0b9;border:1px solid #c8d0b933;border-radius:99px;padding:6px 10px;font-size:11px}.friend-round .challenge-explanation small{color:#b6c0ac;font-size:11px}.friend-finish{text-align:center;padding:42px 26px}.friend-finish>span{color:#c9bd9e;font-size:12px}.challenge-page .friend-finish h2{color:#f3ead5;margin:18px 0;font:500 clamp(25px,4vw,36px)/1.5 Songti SC,serif}.challenge-page .friend-finish>strong{color:#e5c68e;font:64px/1.5 Georgia,serif;display:block}.friend-finish>strong small{color:#b7b59e;margin:0 24px;font-size:32px}.friend-finish>p{color:#b3c3b6;margin-bottom:24px;font-size:13px;line-height:1.8}.friend-finish .challenge-primary{min-width:230px}.friend-finish>a{color:#c4c9b4;min-height:44px;margin-top:8px;padding:15px 0 0;font-size:12px;text-decoration:none;display:block}.challenge-page .friend-leave{color:#b6b8a8;text-underline-offset:5px;background:0 0;border:0;min-height:44px;margin:25px auto 0;font-size:12px;text-decoration:underline;display:block}.friend-connection{color:#efd39d;background:#543f2633;border:1px solid #d9bd8740;border-radius:8px;padding:13px 16px;font-size:12px;line-height:1.8}.challenge-page .friend-connection button{color:#efdaa9;background:0 0;border:0;min-height:36px;padding:4px 10px;text-decoration:underline}@media (width<=900px){.friend-clock{top:calc(62px + env(safe-area-inset-top))}}@media (width<=760px){.challenge-page .friend-invite-banner{gap:14px;padding:17px}.challenge-page .friend-invite-banner b{font-size:14px}.friend-invite-banner p{font-size:11px}.challenge-page .friend-invite-banner>a{padding:10px 12px;font-size:12px}.friend-entry-grid{grid-template-columns:1fr;gap:18px}.friend-entry,.friend-lobby{padding:24px 20px}.challenge-page .friend-entry h2{font-size:24px}.friend-page .challenge-section-title h1{font-size:25px}.friend-scoreboard{gap:24px;margin-bottom:18px;padding:16px 12px}.friend-player{flex-wrap:wrap;gap:9px}.friend-player-avatar{flex-basis:30px;height:30px;font-size:16px}.friend-player>div{flex-basis:calc(100% - 40px)}.challenge-page .friend-player b{font-size:12px}.friend-player small{font-size:10px}.challenge-page .friend-player>strong{margin:3px 0 0 39px;font-size:24px}.friend-versus{font-size:9px}.friend-room-code{gap:10px}.challenge-page .friend-room-code>b{letter-spacing:1px;font-size:16px}.friend-room-code .challenge-primary{width:100%;margin:5px 0 0}.friend-ready-line{flex-direction:column;align-items:stretch;gap:18px}.friend-ready-line button{width:100%;min-width:0}.friend-ready-line p{font-size:11px}.friend-clock{top:calc(58px + env(safe-area-inset-top));gap:9px;padding:11px 13px}.friend-clock>span{font-size:10px}.friend-clock>svg{width:18px}.challenge-page .friend-clock>strong{min-width:50px;font-size:25px}.friend-clock-status{text-align:right;max-width:100px;line-height:1.5}.friend-finish{padding:30px 18px}.friend-finish .challenge-primary{width:100%;min-width:0}.challenge-page .friend-finish>strong{font-size:54px}.friend-countdown{padding:30px 10px}.friend-countdown p{font-size:12px}}@media (width<=380px){.challenge-page .friend-invite-banner{flex-direction:column;align-items:stretch;gap:10px}.friend-invite-banner>a{width:100%}.friend-clock-status{max-width:80px}}.challenge-page{--challenge-gold:#ddc392;--challenge-muted:#bac7c0;--challenge-text:#f2eee3;--challenge-text-soft:#d8dfd4;--challenge-ink:#14232b;--challenge-surface:#182c36;--challenge-surface-soft:#11242e;--challenge-line:#d5e1d52b;--challenge-line-strong:#ddc3925c;--challenge-success:#badabf;--challenge-error:#f0b69d;--challenge-radius:12px;--challenge-control-radius:8px;--challenge-font:"PingFang SC","Microsoft YaHei",Arial,sans-serif;--challenge-title-font:"Songti SC","SimSun",serif;font-family:var(--challenge-font);color:var(--challenge-text);background:radial-gradient(at 50% 0,#24363b 0,#11252f 48%,#0a1923 100%);font-size:14px;line-height:1.7}.challenge-page .challenge-shell{width:min(1120px,100% - 48px);padding-bottom:30px}.challenge-page.zhiye-v3 .learner-header.site-header{border-bottom-color:var(--challenge-line);background:#182b3394;width:min(1120px,100% - 48px)}.challenge-module-bar{justify-content:space-between;align-items:center;gap:24px;margin-bottom:30px;padding:25px 0 0;display:flex}.challenge-page .challenge-module-label{color:var(--challenge-gold);flex-direction:column;gap:3px;text-decoration:none;display:flex}.challenge-module-label>span{letter-spacing:2px;font-size:13px;font-weight:500}.challenge-module-label>small{color:var(--challenge-muted);letter-spacing:.5px;font-size:11px}.challenge-page .challenge-mode-nav{border:1px solid var(--challenge-line);background:#0b1d2766;border-radius:10px;align-items:stretch;gap:4px;padding:4px;display:flex}.challenge-page .challenge-mode-nav>a{min-width:128px;min-height:42px;color:var(--challenge-muted);white-space:nowrap;border:1px solid #0000;border-radius:7px;justify-content:center;align-items:center;gap:8px;padding:9px 17px;font-size:13px;text-decoration:none;display:flex}.challenge-mode-nav svg{width:17px;height:17px}.challenge-page .challenge-mode-nav>a[aria-current=page]{border-color:var(--challenge-line-strong);color:#efdbb4;background:#ddc3921a}.challenge-page .challenge-mode-nav>a:hover{color:#f4e5c9}.challenge-page .challenge-intro{text-align:center;margin:32px 0}.challenge-page .challenge-kicker{font-family:var(--challenge-font);color:var(--challenge-muted);letter-spacing:2px;font-size:12px;line-height:1.8}.challenge-page .challenge-intro h1{font:500 clamp(38px,4.8vw,54px)/1.4 var(--challenge-title-font);color:var(--challenge-text);letter-spacing:5px;margin:12px 0}.challenge-page .challenge-intro>p{color:var(--challenge-muted);margin:0;font-size:14px;line-height:1.9}.challenge-page .challenge-rules{color:var(--challenge-muted);gap:0;margin-top:22px;font-size:12px}.challenge-page .challenge-rules>span{border-right-color:var(--challenge-line);padding:0 18px;line-height:1.8}.challenge-page .challenge-rules b{color:var(--challenge-gold);font-weight:500}.challenge-page .challenge-section-title{gap:14px;margin:17px 0 24px}.challenge-page .challenge-section-title h1{font:500 clamp(27px,3vw,34px)/1.5 var(--challenge-title-font);color:var(--challenge-text);letter-spacing:1px;scroll-margin-top:94px}.challenge-page .challenge-section-title>p{letter-spacing:1px;color:var(--challenge-gold);order:2;margin:0;font-size:12px;line-height:1.8}.challenge-page :is(.challenge-ready,.challenge-question,.challenge-result,.challenge-ranking,.friend-entry,.friend-lobby,.friend-finish){border:1px solid var(--challenge-line);border-radius:var(--challenge-radius);background:linear-gradient(135deg,#21353e,#152a35);padding:28px}.challenge-page :is(.challenge-category,.friend-scoreboard,.challenge-timer,.friend-clock){border-color:var(--challenge-line);border-radius:var(--challenge-radius)}.challenge-page :is(.challenge-category h2,.friend-entry h2,.friend-lobby h2,.challenge-ranking h2){font:500 25px/1.5 var(--challenge-title-font);letter-spacing:1px;color:var(--challenge-text)}.challenge-page :is(.challenge-ready h2,.friend-countdown h2){font:500 24px/1.6 var(--challenge-title-font);letter-spacing:.5px;color:var(--challenge-text)}.challenge-page :is(.challenge-question h2,.friend-finish h2){font:500 clamp(23px,2.7vw,29px)/1.65 var(--challenge-title-font);color:var(--challenge-text);letter-spacing:0}.challenge-page .challenge-category{border-color:var(--challenge-line);border-radius:var(--challenge-radius)}.challenge-page .challenge-category-copy{min-height:365px;padding:24px}.challenge-page .challenge-category-copy>small,.challenge-page .friend-step{font:400 11px/1.8 var(--challenge-font);color:#d9d1b9;letter-spacing:1.5px}.challenge-page .challenge-category p,.challenge-page .friend-entry>p{color:var(--challenge-muted);font-size:13px;line-height:1.8}.challenge-page .challenge-personal{color:#d8c6a1;font-size:12px;line-height:1.7}.challenge-page :is(.challenge-primary,.challenge-category-copy>button:not(.challenge-text-button)){border-radius:var(--challenge-control-radius);background:var(--challenge-gold);min-height:48px;color:var(--challenge-ink);font:600 14px/1.6 var(--challenge-font);white-space:normal;text-align:center;box-shadow:none;border:1px solid #ead5af;justify-content:center;align-items:center;gap:10px;padding:12px 20px;text-decoration:none;display:inline-flex}.challenge-page .challenge-category-copy>button:not(.challenge-text-button){justify-content:space-between}.challenge-page .challenge-category-copy>button>span{float:none}.challenge-page .friend-secondary,.challenge-page .challenge-error button,.challenge-page .challenge-ranking button:not(.challenge-primary){border:1px solid var(--challenge-line-strong);border-radius:var(--challenge-control-radius);color:#e9d6b0;min-height:48px;font:500 14px/1.6 var(--challenge-font);box-shadow:none;background:#ddc3920d;justify-content:center;align-items:center;gap:8px;padding:12px 20px;text-decoration:none;display:inline-flex}.challenge-page :is(.challenge-text-button,.challenge-back,.friend-leave,.friend-finish>a){min-height:44px;font:400 12px/1.7 var(--challenge-font);color:var(--challenge-muted);text-underline-offset:4px}.challenge-page :is(.challenge-primary,.friend-secondary):disabled{opacity:.55;cursor:not-allowed}.challenge-page :is(.challenge-primary,.friend-secondary):not(:disabled):hover{filter:brightness(1.07)}.challenge-page .challenge-text-button:hover{background:#ddc3920a}.challenge-page input,.challenge-page select{border:1px solid var(--challenge-line-strong);border-radius:var(--challenge-control-radius);background:var(--challenge-surface-soft);height:auto;min-height:48px;color:var(--challenge-text);font:400 14px/1.6 var(--challenge-font);box-shadow:none;padding:12px 14px}.challenge-page label{font:400 12px/1.7 var(--challenge-font);color:var(--challenge-text-soft);margin-bottom:9px}.challenge-page input:focus-visible,.challenge-page select:focus-visible,.challenge-page button:focus-visible,.challenge-page a:focus-visible{outline:2px solid var(--challenge-gold);outline-offset:3px}.challenge-page .friend-entry{min-height:305px}.challenge-page .friend-entry>h2{margin-top:16px;margin-bottom:10px}.challenge-page .friend-entry>p{margin-bottom:24px}.challenge-page .friend-entry>.challenge-primary{width:100%;margin-top:22px}.challenge-page .friend-room-code .friend-secondary{margin-left:auto}.challenge-page .friend-ready-line{border-top:1px solid var(--challenge-line);margin-top:25px;padding-top:23px}.challenge-page .friend-ready-line p,.challenge-page .friend-lobby>p{color:var(--challenge-muted);font-size:13px;line-height:1.8}.challenge-page .challenge-options{gap:12px}.challenge-page .challenge-options button{border:1px solid var(--challenge-line-strong);border-radius:var(--challenge-control-radius);background:var(--challenge-surface-soft);color:var(--challenge-text);min-height:64px;font:400 15px/1.65 var(--challenge-font);gap:15px;padding:14px 17px}.challenge-page .challenge-options .challenge-option-letter{border:1px solid var(--challenge-line-strong);color:var(--challenge-gold);font:500 15px/1.2 var(--challenge-font);background:#ddc3920b;border-radius:6px;flex:0 0 28px;height:28px}.challenge-page .challenge-options button:disabled{opacity:.76}.challenge-page .challenge-options button.is-selected{opacity:1;background:#3b443f;border-color:#ddc392;box-shadow:0 0 0 1px #ddc39233}.challenge-page .challenge-options button.is-correct{color:#f1f7ed;box-shadow:none;opacity:1;background:#244136;border-color:#9cbca0}.challenge-page .challenge-options button.friend-wrong{color:#f1dfd4;opacity:1;background:#472f2d;border-color:#c58e77}.challenge-page .challenge-options .friend-wrong .challenge-option-mark{color:var(--challenge-error)}.challenge-page .challenge-explanation{border-color:var(--challenge-line);margin-top:22px;padding-top:21px}.challenge-page .challenge-explanation>b{font:500 14px/1.8 var(--challenge-font);color:var(--challenge-success)}.challenge-page .challenge-explanation>p{color:var(--challenge-text-soft);font-size:14px;line-height:1.9}.challenge-page .challenge-explanation>small{font:400 12px/1.8 var(--challenge-font);color:var(--challenge-muted)}.challenge-page .challenge-explanation .challenge-primary{width:100%}.challenge-page .friend-round{max-width:none}.challenge-page .friend-round .challenge-question{margin-top:16px}.challenge-page .friend-clock{background:var(--challenge-surface);padding:14px 20px;box-shadow:0 8px 20px #07121b33}.challenge-page .friend-clock>strong{color:var(--challenge-gold);font:400 32px/1.2 Georgia,serif}.challenge-page .friend-clock>span,.challenge-page .challenge-timer>span{color:var(--challenge-muted);font-size:12px}.challenge-page .friend-clock.is-urgent>strong,.challenge-page .challenge-timer.is-urgent strong{color:var(--challenge-error)}.challenge-page .friend-countdown{border:1px solid var(--challenge-line);border-radius:var(--challenge-radius);background:#182c3666;margin-top:16px;padding:40px 20px}.challenge-page .friend-countdown>strong{color:var(--challenge-gold);font:400 72px/1.3 Georgia,serif}.challenge-page .friend-scoreboard{background:#182c36bf;gap:40px;margin-bottom:24px;padding:20px 24px}.challenge-page .friend-player>strong{color:var(--challenge-gold);font:400 30px/1.3 Georgia,serif}.challenge-page .friend-player>b,.challenge-page .friend-player b{font:500 14px/1.6 var(--challenge-font);color:var(--challenge-text)}.challenge-page .friend-player small{font:400 12px/1.6 var(--challenge-font);color:var(--challenge-muted)}.challenge-page .friend-player small.is-ready{color:var(--challenge-success)}.challenge-page .friend-player>strong.friend-readiness{font:500 22px/1.3 var(--challenge-font);color:var(--challenge-muted)}.challenge-page .friend-answer-results{gap:9px;margin-top:13px}.challenge-page .friend-answer-results>span{font:400 12px/1.7 var(--challenge-font);border:1px solid var(--challenge-line);border-radius:6px;padding:5px 11px}.challenge-page .friend-answer-results>.is-correct{color:var(--challenge-success);background:#badabf08;border-color:#a8c8ad55}.challenge-page .friend-answer-results>.is-wrong,.challenge-page .friend-answer-results>.is-timeout{color:#edc5ae;background:#edc5ae07;border-color:#d4a38744}.challenge-page .challenge-error,.challenge-page .friend-connection{border-radius:var(--challenge-control-radius);color:var(--challenge-error);font:400 13px/1.8 var(--challenge-font);background:#533c2d33;border:1px solid #d4a38766;margin:0 0 22px;padding:16px 20px}.challenge-page .challenge-error>p{margin:0 0 12px;font-size:13px;line-height:1.8}.challenge-page .friend-connection button{min-height:36px;font-size:12px}.challenge-page .friend-finish,.challenge-page .challenge-ready{text-align:center;padding:38px 28px}.challenge-page .friend-finish>p,.challenge-page .challenge-ready>p{color:var(--challenge-muted);font-size:13px;line-height:1.9}.challenge-page .friend-finish>strong,.challenge-page .challenge-result>strong{color:var(--challenge-gold);font-variant-numeric:tabular-nums;font:400 72px/1.4 Georgia,serif}.challenge-page .friend-finish .challenge-primary{min-width:240px}.challenge-page .challenge-ranking li{border-bottom-color:var(--challenge-line);gap:16px;padding:17px 8px}.challenge-page .challenge-ranking li>b{font:400 14px/1.7 var(--challenge-font);color:var(--challenge-text-soft)}.challenge-page .challenge-ranking>p,.challenge-page .challenge-empty,.challenge-page .challenge-result-caption{color:var(--challenge-muted);font-size:12px;line-height:1.9}.challenge-page .challenge-footnote{font:400 12px/1.9 var(--challenge-font);color:var(--challenge-muted);letter-spacing:.5px;margin:25px 0 0}.challenge-page .friend-leave{margin-top:24px;padding:12px 15px}@media (width<=1000px) and (width>=901px){.challenge-page.zhiye-v3 .learner-header.site-header{width:calc(100% - 48px)}}@media (width<=900px){.challenge-page{padding-bottom:calc(100px + env(safe-area-inset-bottom))}.challenge-page.zhiye-v3 .learner-header.site-header{background:#182b33f0;width:100%}.challenge-page .friend-clock{top:calc(62px + env(safe-area-inset-top))}}@media (width<=760px){.challenge-page .challenge-shell{width:calc(100% - 32px);padding-bottom:12px}.challenge-module-bar{flex-direction:column;align-items:stretch;gap:17px;margin-bottom:24px;padding-top:22px}.challenge-page .challenge-module-label{flex-direction:row;justify-content:space-between;align-items:center;gap:12px}.challenge-module-label>span{font-size:12px}.challenge-module-label>small{letter-spacing:0;font-size:11px}.challenge-page .challenge-mode-nav>a{flex:1;min-width:0;min-height:44px;padding:10px;font-size:13px}.challenge-page .challenge-intro{margin:25px 0}.challenge-page .challenge-intro h1{letter-spacing:4px;margin:10px 0;font-size:37px}.challenge-page .challenge-intro>p{font-size:13px}.challenge-page .challenge-kicker{letter-spacing:1px;font-size:11px}.challenge-page .challenge-rules{row-gap:8px;margin-top:18px;font-size:11px}.challenge-page .challenge-rules>span{padding:0 9px}.challenge-page .challenge-section-title{gap:7px 12px;margin:12px 0 20px}.challenge-page .challenge-section-title h1{scroll-margin-top:78px;font-size:26px}.challenge-page .challenge-section-title>p{font-size:12px}.challenge-page :is(.challenge-ready,.challenge-question,.challenge-result,.challenge-ranking,.friend-entry,.friend-lobby,.friend-finish){padding:23px 19px}.challenge-page :is(.challenge-category h2,.friend-entry h2,.friend-lobby h2,.challenge-ranking h2){font-size:24px}.challenge-page :is(.challenge-ready h2,.friend-countdown h2){font-size:22px}.challenge-page :is(.challenge-question h2,.friend-finish h2){font-size:22px;line-height:1.65}.challenge-page .challenge-category-copy{min-height:295px;padding:22px}.challenge-page :is(.challenge-primary,.friend-secondary,.challenge-category-copy>button:not(.challenge-text-button)){min-height:48px;padding:12px 17px;font-size:14px}.challenge-page input,.challenge-page select{min-height:50px;padding:11px 13px;font-size:16px}.challenge-page .friend-entry{min-height:0}.challenge-page .friend-entry-grid{gap:16px}.challenge-page .friend-entry>p{margin-bottom:22px;font-size:13px}.challenge-page .friend-room-code{gap:10px}.challenge-page .friend-room-code .friend-secondary{width:100%;margin:6px 0 0}.challenge-page .friend-ready-line{margin-top:22px;padding-top:21px}.challenge-page .friend-ready-line p{font-size:12px}.challenge-page .challenge-options button{gap:12px;min-height:62px;padding:13px;font-size:14px}.challenge-page .challenge-options .challenge-option-letter{flex-basis:27px;height:27px;font-size:14px}.challenge-page .challenge-explanation>p,.challenge-page .challenge-explanation>b{font-size:13px}.challenge-page .friend-clock{top:calc(58px + env(safe-area-inset-top));gap:9px;padding:11px 13px}.challenge-page .friend-clock>strong{font-size:28px}.challenge-page .friend-clock>span,.challenge-page .challenge-timer>span{font-size:11px}.challenge-page .friend-scoreboard{gap:26px;margin-bottom:20px;padding:16px 12px}.challenge-page .friend-player b{font-size:12px;line-height:1.6}.challenge-page .friend-player small{font-size:11px}.challenge-page .friend-player>strong{font-size:26px}.challenge-page .friend-countdown{padding:30px 16px}.challenge-page .friend-countdown>strong{font-size:62px}.challenge-page .challenge-error,.challenge-page .friend-connection{margin-bottom:18px;padding:15px 17px;font-size:12px}.challenge-page .friend-finish>strong,.challenge-page .challenge-result>strong{font-size:62px}.challenge-page .friend-finish .challenge-primary{width:100%;min-width:0}.challenge-page .friend-finish>p,.challenge-page .challenge-ready>p{font-size:12px}.challenge-page .challenge-footnote{letter-spacing:0;font-size:11px}}@media (width<=360px){.challenge-module-label>small{font-size:10px}.challenge-page .challenge-rules>span{padding:0 7px}.challenge-page .friend-clock-status{max-width:70px}}@media (prefers-reduced-motion:reduce){.challenge-page .challenge-mode-nav>a{transition:none}}@media (width>=1101px){.challenge-page .challenge-categories{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.challenge-page .challenge-category-copy{min-height:380px;padding:22px 19px}.challenge-page .challenge-category h2{letter-spacing:1px;font-size:23px}.challenge-page .challenge-category p{min-height:47px}}@media (width>=761px) and (width<=1100px){.challenge-page .challenge-categories{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}}.challenge-page .challenge-mixed{border-color:#ddc39270}.challenge-page .challenge-mixed .challenge-category-copy>small{color:#f0d39a}.challenge-page .challenge-category{isolation:auto;background:#152a35;flex-direction:column;transition:border-color .2s,transform .2s;display:flex}.challenge-category-art{background:#1a3039;flex:none;height:175px;position:relative;overflow:hidden}.challenge-category-art>img{object-fit:cover;object-position:50% 10%;opacity:1;width:100%;height:100%;display:block;position:static}.challenge-category-art:after{content:"";pointer-events:none;background:linear-gradient(#0000 65%,#152a3599);position:absolute;inset:0}.challenge-page .challenge-category-copy{flex:1;min-height:245px;padding:22px 20px 15px}.challenge-page .challenge-category-copy h2{margin:0}.challenge-page .challenge-category-copy>p{min-height:47px;margin:10px 0 15px}.challenge-page .challenge-personal{margin-bottom:20px}.challenge-page .challenge-mixed .challenge-category-art>img{object-position:50% 8%}@media (width<=1100px) and (width>=761px){.challenge-category-art{height:190px}.challenge-page .challenge-category-copy{min-height:235px;padding:23px 24px 15px}}@media (width<=760px){.challenge-category-art{height:175px}.challenge-page .challenge-category-copy{min-height:225px;padding:22px 23px 15px}.challenge-page .challenge-category-copy>p{min-height:0;margin:9px 0 15px}.challenge-page .challenge-personal{margin-bottom:18px}}.challenge-page{background:radial-gradient(at 8% 0,#a58b5c1a,#0000 48%),radial-gradient(at 92% 28%,#3a65692b,#0000 45%),linear-gradient(160deg,#162b35,#091923 78%)}.challenge-page .challenge-module-bar{margin-bottom:18px;padding-top:26px}.challenge-page .challenge-module-label>span{letter-spacing:2.5px}.challenge-page .challenge-mode-nav{background:#0b1c254d;border-color:#d7e0d522;box-shadow:inset 0 1px #ffffff04}.challenge-page .challenge-intro{text-align:left;border-bottom:1px solid #d7e0d51a;margin:30px 0 29px;padding:2px 0 23px;position:relative}.challenge-page .challenge-intro h1{letter-spacing:6px;margin:9px 0 10px;font-size:52px;font-weight:500;line-height:1.3}.challenge-page .challenge-intro>p{color:#b9c9c2;letter-spacing:.25px;max-width:580px;font-size:14px}.challenge-page .challenge-kicker{color:#cbbd9d;letter-spacing:2px}.challenge-page .challenge-rules{justify-content:flex-start;gap:8px;margin:20px 0 0}.challenge-page .challenge-rules>span{white-space:nowrap;background:#ffffff03;border:1px solid #d7e0d51e;border-radius:99px;padding:6px 12px;font-size:11px;line-height:1.6}.challenge-page .challenge-rules>span:last-child{border-right:1px solid #d7e0d51e}.challenge-page .challenge-rules b{color:#e4d0a9;letter-spacing:.3px}.challenge-page .challenge-categories{grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch;gap:22px}.challenge-page .challenge-category{background:linear-gradient(140deg,#20343d,#142932);border:1px solid #d7e0d526;border-radius:14px;transform:translateY(0);box-shadow:0 12px 32px #020e171f}.challenge-page .challenge-category-art{background:#182d36;height:170px}.challenge-page .challenge-category-art>img{filter:saturate(.8)brightness(.93);transition:transform .6s,filter .6s}.challenge-page .challenge-category-art:after{background:linear-gradient(#0000 58%,#192e37b3 100%)}.challenge-page .challenge-category-copy{flex-direction:column;gap:0;min-height:227px;padding:23px 23px 20px;display:flex}.challenge-page .challenge-category-copy h2{letter-spacing:1px;color:#f0eadb;margin:0;font-size:25px;line-height:1.5}.challenge-page .challenge-category-copy>p{color:#b4c6be;min-height:0;margin:8px 0 13px;font-size:13px;line-height:1.8}.challenge-card-meta{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;min-height:44px;margin-top:auto;margin-bottom:13px;display:flex}.challenge-page .challenge-card-meta .challenge-personal{color:#c5c3aa;margin:0;font-size:11px;line-height:1.7}.challenge-page .challenge-card-meta .challenge-text-button{color:#bdc9bc;white-space:nowrap;border-radius:4px;min-height:44px;margin:0;padding:6px 0;font-size:11px}.challenge-page .challenge-category-copy>button:not(.challenge-text-button){color:#ecd7ae;background:#ddc3920b;border-color:#d8c3925c;border-radius:8px;width:100%;min-height:46px;margin:0;font-size:13px;font-weight:500;box-shadow:inset 0 1px #fff1cf08}.challenge-page .challenge-mixed{background:linear-gradient(100deg,#142b34,#21343a);border-color:#ddc39250;grid-column:1/-1;grid-template-columns:1.12fr 1fr;min-height:270px;display:grid;overflow:hidden}.challenge-page .challenge-mixed .challenge-category-art>img{object-position:50% 8%;filter:saturate(.8)brightness(.96)}.challenge-page .challenge-mixed .challenge-category-copy>p{color:#c0d0c4;max-width:340px;margin:12px 0 16px;font-size:14px;line-height:1.9}.challenge-page .challenge-mixed .challenge-card-meta{max-width:340px;margin-top:0;margin-bottom:13px}.challenge-page .challenge-mixed .challenge-category-copy>button:not(.challenge-text-button){color:#14232b;background:#ddc392;border-color:#e7d4ae;max-width:340px;min-height:48px;font-weight:600}.challenge-page .challenge-footnote{color:#96ada5;letter-spacing:.4px;margin-top:28px;font-size:11px}.challenge-page .friend-entry-grid{gap:24px}.challenge-page .friend-entry{background:linear-gradient(145deg,#21353e,#142932);border-color:#d7e0d526;border-radius:14px;min-height:310px;padding:29px;position:relative;box-shadow:0 12px 32px #020e171f}.friend-entry-heading{color:#d5c196;align-items:center;gap:12px;margin-bottom:4px;display:flex}.friend-entry-heading>svg{background:#ddc39208;border:1px solid #ddc39230;border-radius:9px;width:34px;height:34px;padding:7px}.challenge-page .friend-step{color:#c9bd9f;letter-spacing:1px;font-size:11px}.challenge-page .friend-entry>h2{letter-spacing:1px;margin-top:15px;margin-bottom:10px;font-size:27px;line-height:1.5}.challenge-page .friend-entry>p{color:#b4c6be;margin-bottom:24px;font-size:13px;line-height:1.85}.challenge-page .friend-entry label{color:#d2d8c8;font-size:12px}.challenge-page .friend-entry>.challenge-primary{margin-top:23px;box-shadow:0 4px 16px #020e1729}.challenge-page .challenge-ready,.challenge-page .friend-finish{background:radial-gradient(at 50% 0,#d9bd870a,#0000 68%),linear-gradient(145deg,#20353d,#132832);border-color:#d7e0d526;border-radius:14px;padding-top:45px;padding-bottom:42px;box-shadow:0 12px 32px #020e171a}.challenge-page .challenge-play{gap:24px}.challenge-page .challenge-question{background:linear-gradient(145deg,#21353e,#142932);border-color:#d7e0d526;border-radius:14px;padding:30px;box-shadow:0 12px 32px #020e171a}.challenge-page .challenge-question h2{letter-spacing:.3px;margin-top:25px;margin-bottom:26px;font-weight:500}.challenge-page .friend-round .challenge-question>h2{margin-top:0}.challenge-page .challenge-options button{background:#10263180;border-color:#c4d3c333;border-radius:9px;min-height:64px;transition:background .18s,border-color .18s}.challenge-page .challenge-timer{background:#142c3580;border-color:#d7e0d51f;box-shadow:0 12px 32px #020e1715}.challenge-page .friend-clock{background:#192f39ed;border-color:#d7e0d526;border-radius:12px}.challenge-page .friend-scoreboard{background:#172e3780;border-color:#d7e0d526;border-radius:12px}.challenge-page .friend-player-avatar{color:#e2ceaa;background:#ddc39209;border-color:#ddc3922e}.challenge-page .friend-player.is-me .friend-player-avatar{border-color:#ddc39275}.challenge-page .friend-versus{color:#bba67b;letter-spacing:1px;font-size:10px}.challenge-page .friend-lobby{background:linear-gradient(145deg,#20353d,#142932);border-color:#d7e0d526;border-radius:14px}.challenge-page .friend-room-code{background:#0e222c66;border:1px dashed #ddc3923b;border-radius:9px;margin-top:20px;margin-bottom:24px;padding:16px 18px}.challenge-page .friend-room-code>b{letter-spacing:1.7px;color:#e3cfaa;font-size:18px}.challenge-page .challenge-ranking,.challenge-page .challenge-result{background:linear-gradient(145deg,#20353d,#142932);border-color:#d7e0d526;border-radius:14px;box-shadow:0 12px 32px #020e171a}.challenge-page .challenge-ranking li:first-child>span,.challenge-page .challenge-ranking li:first-child>strong{color:#efd39b}.challenge-page .challenge-ranking .is-me{background:#ddc39209;border-radius:7px}@media (hover:hover){.challenge-page .challenge-category:hover{border-color:#ddc39270;transform:translateY(-3px)}.challenge-page .challenge-category:hover .challenge-category-art>img{filter:saturate(.95)brightness();transform:scale(1.035)}.challenge-page .challenge-category-copy>button:not(.challenge-text-button):hover{color:#fae8c7;background:#ddc39216;border-color:#e6d1a4a6}.challenge-page .challenge-mixed .challenge-category-copy>button:not(.challenge-text-button):hover{color:#14232b;background:#ecd5a9}}@media (width>=1101px){.challenge-page .challenge-intro .challenge-rules{justify-content:flex-end;max-width:420px;margin:0;position:absolute;bottom:26px;right:0}}@media (width>=761px) and (width<=1000px){.challenge-page .challenge-category-copy{padding:20px 18px}.challenge-page .challenge-category-copy h2{font-size:22px}.challenge-page .challenge-mixed .challenge-category-copy{padding:27px 25px 25px 15px}.challenge-page .challenge-mixed .challenge-category-copy h2{font-size:29px}.challenge-page .challenge-category-art{height:150px}.challenge-page .challenge-card-meta{gap:5px}.challenge-page .challenge-card-meta .challenge-personal{font-size:10px}}@media (width<=760px){.challenge-page .challenge-module-bar{gap:15px;margin-bottom:25px;padding-top:20px}.challenge-page .challenge-intro{margin:23px 0 24px;padding-bottom:23px}.challenge-page .challenge-intro h1{letter-spacing:4px;margin:10px 0 12px;font-size:39px}.challenge-page .challenge-intro>p{max-width:25em;font-size:13px;line-height:1.85}.challenge-page .challenge-rules{gap:6px;margin-top:18px}.challenge-page .challenge-rules>span{padding:5px 9px;font-size:10px}.challenge-page .challenge-categories{grid-template-columns:1fr;gap:18px}.challenge-page .challenge-category-art{height:155px}.challenge-page .challenge-category-copy{min-height:0;padding:21px 22px 20px}.challenge-page .challenge-category-copy h2{font-size:25px}.challenge-page .challenge-category-copy>p{margin:8px 0 10px;font-size:13px}.challenge-page .challenge-card-meta{gap:10px;min-height:40px;margin-bottom:11px}.challenge-page .challenge-card-meta .challenge-personal{font-size:11px}.challenge-page .challenge-card-meta .challenge-text-button{min-height:44px;font-size:11px}.challenge-page .challenge-category-copy>button:not(.challenge-text-button){min-height:48px;font-size:14px}.challenge-page .challenge-mixed{grid-column:auto;min-height:0;display:flex}.challenge-page .challenge-mixed .challenge-category-art{height:185px;min-height:0}.challenge-page .challenge-mixed .challenge-category-art:after{background:linear-gradient(#0000 55%,#21343a 100%)}.challenge-page .challenge-mixed .challenge-category-copy{min-height:0;padding:17px 23px 23px}.challenge-page .challenge-mixed .challenge-category-copy h2{letter-spacing:2px;font-size:29px}.challenge-page .challenge-mixed .challenge-category-copy>p{max-width:none;margin:10px 0;font-size:13px}.challenge-page .challenge-mixed .challenge-card-meta,.challenge-page .challenge-mixed .challenge-category-copy>button:not(.challenge-text-button){max-width:none}.challenge-page .friend-entry{border-radius:13px;min-height:0;padding:24px 22px}.challenge-page .friend-entry>h2{margin-top:14px;font-size:25px}.challenge-page .friend-entry>p{font-size:13px;line-height:1.85}.challenge-page .challenge-question{border-radius:13px;padding:25px 19px}.challenge-page .challenge-question h2{margin:22px 0;font-size:23px;line-height:1.65}.challenge-page .challenge-ready,.challenge-page .friend-finish{padding:34px 21px}.challenge-page .friend-room-code{gap:9px;padding:14px}.challenge-page .friend-room-code>b{letter-spacing:1px;font-size:16px}.challenge-page .friend-room-code .friend-secondary{font-size:13px}.challenge-page .challenge-footnote{max-width:28em;margin:23px auto 0;font-size:10px;line-height:1.9}}@media (prefers-reduced-motion:reduce){.challenge-page .challenge-category,.challenge-page .challenge-category-art>img,.challenge-page .challenge-options button{transition:none}.challenge-page .challenge-category:hover,.challenge-page .challenge-category:hover .challenge-category-art>img{transform:none}}.challenge-page .challenge-mixed{flex-direction:column;grid-column:auto;min-height:0;display:flex}.challenge-page .challenge-mixed .challenge-category-art{grid-area:auto;height:170px;min-height:0}.challenge-page .challenge-mixed .challenge-category-art:after{background:linear-gradient(#0000 58%,#192e37b3 100%)}.challenge-page .challenge-mixed .challenge-category-copy{grid-area:auto;justify-content:flex-start;min-height:227px;padding:23px 23px 20px}.challenge-page .challenge-mixed .challenge-category-copy h2{letter-spacing:1px;font-size:25px;line-height:1.5}.challenge-page .challenge-mixed .challenge-category-copy>p{max-width:none;margin:8px 0 13px;font-size:13px;line-height:1.8}.challenge-page .challenge-mixed .challenge-card-meta{max-width:none;margin-top:auto}.challenge-page .challenge-mixed .challenge-category-copy>button:not(.challenge-text-button){max-width:none}@media (width>=1101px){.challenge-page .challenge-categories{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.challenge-page .challenge-category-copy,.challenge-page .challenge-mixed .challenge-category-copy{padding:22px 19px 19px}.challenge-page .challenge-category-copy h2,.challenge-page .challenge-mixed .challenge-category-copy h2{font-size:23px}}@media (width>=761px) and (width<=1100px){.challenge-page .challenge-categories{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.challenge-page .challenge-mixed .challenge-category-art{height:170px}}@media (width<=760px){.challenge-page .challenge-mixed .challenge-category-art{height:155px}.challenge-page .challenge-mixed .challenge-category-copy{min-height:0;padding:21px 22px 20px}.challenge-page .challenge-mixed .challenge-category-copy h2{font-size:25px}.challenge-page .challenge-mixed .challenge-category-copy>p{margin:8px 0 10px}}.challenge-records{color:#e9eadc;background:linear-gradient(145deg,#20343d,#122730);border:1px solid #d7e0d526;border-radius:14px;margin:30px 0;padding:27px}.challenge-records>header{justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px;display:flex}.experience-upgrade .challenge-records h2{color:#f1ead8;letter-spacing:1px;margin:0;font:500 26px/1.5 Songti SC,serif}.challenge-records>header p{color:#b0c2b6;margin:7px 0 0;font-size:12px;line-height:1.8}.experience-upgrade .challenge-records>header>a{white-space:nowrap;color:#e5d1ab;background:#d9bd8707;border:1px solid #d9bd8759;border-radius:8px;justify-content:center;align-items:center;min-height:44px;padding:10px 17px;font-size:13px;text-decoration:none;display:inline-flex}.experience-upgrade .challenge-records h3{color:#c8d2c2;letter-spacing:0;margin:22px 0 13px;font-size:13px;font-weight:500;line-height:1.7}.challenge-record-bests{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.challenge-record-bests>article{background:#0b212b6b;border:1px solid #d7e0d51e;border-radius:10px;padding:19px 17px}.challenge-record-bests>article>span{color:#b4c8bc;font-size:12px;line-height:1.7}.experience-upgrade .challenge-record-bests strong{color:#e3c998;font-variant-numeric:tabular-nums;margin-top:8px;font:32px/1.5 Georgia,serif;display:block}.challenge-record-bests small{color:#b4c1ad;margin-left:7px;font:11px/1.7 sans-serif}.challenge-record-stats{border-top:1px solid #d7e0d51e;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:22px 0 0;padding:22px 0;display:grid}.challenge-record-stats>div{border-left:1px solid #d7e0d51e;flex-direction:column;gap:6px;padding-left:14px;display:flex}.challenge-record-stats>div:first-child{border-left:0;padding-left:0}.challenge-record-stats span{color:#b0c2b5;font-size:11px}.experience-upgrade .challenge-record-stats b{color:#e3dcc5;font-variant-numeric:tabular-nums;font:26px/1.4 Georgia,serif}.challenge-record-tabs{flex-wrap:wrap;gap:8px;margin:6px 0 16px;display:flex}.experience-upgrade .challenge-record-tabs button,.experience-upgrade .challenge-records-empty button,.experience-upgrade .challenge-record-more{color:#bcccbb;cursor:pointer;background:#d9bd8704;border:1px solid #c6cfb933;border-radius:8px;min-height:44px;padding:10px 16px;font:400 12px/1.7 PingFang SC,Microsoft YaHei,sans-serif}.experience-upgrade .challenge-record-tabs button[aria-pressed=true]{color:#e9d5a8;background:#ddc39212;border-color:#ddc39277}.challenge-record-list{margin:0;padding:0;list-style:none}.challenge-record-list>li{border-top:1px solid #d7e0d51c;grid-template-columns:minmax(0,1fr) auto auto 110px;align-items:center;gap:18px;padding:18px 3px;display:grid}.challenge-record-list>li>div{min-width:0}.experience-upgrade .challenge-record-list b{color:#e0e7d7;overflow-wrap:anywhere;font-size:13px;font-weight:500;line-height:1.7}.challenge-record-list p{color:#aabfaf;overflow-wrap:anywhere;margin:5px 0 0;font-size:11px;line-height:1.8}.experience-upgrade .challenge-record-list strong{color:#e0c692;white-space:nowrap;text-align:right;font-variant-numeric:tabular-nums;min-width:65px;font:22px/1.5 Georgia,serif}.challenge-record-list strong small{color:#aebda6;font:11px/1.5 sans-serif}.challenge-record-list time{color:#9eb49f;text-align:right;grid-column:-2/-1;font-size:11px}.challenge-record-result{white-space:nowrap;text-align:center;color:#b9c6b2;border:1px solid #c2d1bd33;border-radius:5px;min-width:42px;padding:3px 7px;font-size:11px}.challenge-record-result.won{color:#bcd9b8;background:#bcd9b807;border-color:#acd2ac44}.challenge-record-result.lost{color:#e1b9a0;border-color:#d8aa9144}.challenge-records-empty{color:#b8c8b8;text-align:center;padding:28px 8px;font-size:13px;line-height:1.9}.experience-upgrade .challenge-records-empty>a{color:#e6d0a5;min-height:44px;padding:12px 0 0;text-decoration:none;display:block}.challenge-record-note{color:#9caf9e;margin:16px 0 0;font-size:11px;line-height:1.8}.experience-upgrade .challenge-record-more{margin:14px 0 0}.challenge-records.is-matches-only>header{margin-bottom:12px}.challenge-records.is-matches-only .challenge-record-stats{border-top:0;margin-top:0;padding-top:6px}.friend-rematch{border-top:1px solid #d7e0d526;max-width:620px;margin:25px auto 0;padding-top:22px}.friend-rematch>p{color:#bdc8b6;margin:0 0 18px;font-size:13px;line-height:1.9}.friend-rematch>button{margin:5px 6px}.friend-rematch .friend-secondary{min-width:120px}@media (width<=760px){.challenge-records{margin:25px 0;padding:23px 18px}.challenge-records>header{align-items:flex-start;gap:14px}.experience-upgrade .challenge-records h2{font-size:23px}.challenge-records>header p{font-size:11px}.experience-upgrade .challenge-records>header>a{padding:9px 12px;font-size:12px}.challenge-record-bests{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.challenge-record-bests>article{padding:15px}.challenge-record-bests>article>span{font-size:12px}.experience-upgrade .challenge-record-bests strong{font-size:30px}.challenge-record-stats{gap:8px;padding:19px 0}.challenge-record-stats>div{padding-left:9px}.challenge-record-stats span{font-size:10px}.experience-upgrade .challenge-record-stats b{font-size:23px}.challenge-record-list>li{grid-template-columns:minmax(0,1fr) auto auto;gap:10px;padding:15px 0}.challenge-record-list time{text-align:left;grid-column:1/-1;margin-top:-4px}.experience-upgrade .challenge-record-list strong{min-width:45px;font-size:21px}.challenge-record-list p{font-size:11px}.challenge-record-result{min-width:38px;padding:3px 5px;font-size:10px}.friend-rematch>button{width:100%;margin:6px 0}.challenge-record-note{font-size:10px}}.admin-simple .admin-challenge-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:22px 0;display:grid}.admin-simple .admin-challenge-stats>div{background:#fff;border:1px solid #e0e7e9;border-radius:13px;flex-direction:column;gap:8px;padding:20px;display:flex}.admin-simple .admin-challenge-stats span{color:#64747b;font-size:13px}.admin-simple .admin-challenge-stats b{color:#294d43;font-size:25px;line-height:1.4}.admin-simple .admin-challenge-stats small{color:#64747b;font-size:12px;font-weight:400}.admin-simple .admin-challenge-form{background:#fff;border:1px solid #cbdcd5;border-radius:14px;margin:25px 0;padding:26px;scroll-margin-top:25px}.admin-simple .admin-challenge-form h2{margin:0 0 9px;font-size:23px}.admin-simple .admin-challenge-form>header p{color:#64747b;margin:0 0 25px;font-size:13px}.admin-simple .admin-challenge-form fieldset{border:0;gap:20px;min-width:0;margin:0;padding:0;display:grid}.admin-simple .admin-challenge-form label,.admin-simple .admin-challenge-filters>label{color:#40565c;flex-direction:column;gap:8px;min-width:0;font-size:13px;display:flex}.admin-simple .admin-challenge-form input:not([type=radio]):not([type=checkbox]),.admin-simple .admin-challenge-form textarea,.admin-simple .admin-challenge-form select,.admin-simple .admin-challenge-filters input,.admin-simple .admin-challenge-filters select{color:#243c44;width:100%;min-height:44px;font:14px/1.6 var(--ui-font);box-sizing:border-box;background:#fbfcfd;border:1px solid #d5dfe1;border-radius:9px;padding:11px 13px}.admin-simple .admin-challenge-form textarea{resize:vertical;min-height:90px}.admin-simple .admin-challenge-form-row{grid-template-columns:1fr 1fr;gap:20px;display:grid}.admin-simple .admin-challenge-option-heading{flex-wrap:wrap;align-items:center;gap:16px;display:flex}.admin-simple .admin-challenge-option-heading b{font-size:14px}.admin-simple .admin-challenge-option-heading span{color:#64747b;font-size:12px}.admin-simple .admin-challenge-options{gap:12px;display:grid}.admin-simple .admin-challenge-options>div{align-items:center;gap:12px;min-width:0;display:flex}.admin-simple .admin-challenge-radio{cursor:pointer;flex-direction:row;flex:0 0 58px;justify-content:center;align-items:center;gap:8px;min-height:44px;margin:0;display:flex}.admin-simple .admin-challenge-radio input,.admin-simple .admin-challenge-enabled input{accent-color:#286652;flex:0 0 18px;width:18px;height:18px;min-height:18px;margin:0;padding:0}.admin-simple .admin-challenge-form .admin-challenge-enabled{flex-direction:row;align-items:center;gap:10px;min-height:44px;display:flex}.admin-simple .admin-challenge-options>div>input{flex:1;min-width:0}.admin-simple .admin-challenge-form>footer{border-top:1px solid #e1e7e9;justify-content:flex-end;gap:12px;margin-top:25px;padding-top:20px;display:flex}.admin-simple .admin-challenge-filters{grid-template-columns:minmax(200px,1fr) 180px 150px auto;align-items:end;gap:15px;margin:25px 0;display:grid}.admin-simple .admin-challenge-filters>button{min-height:46px}.admin-simple .admin-challenge-list{gap:12px;display:grid}.admin-simple .admin-challenge-list>article{background:#fff;border:1px solid #e0e7e9;border-radius:12px;justify-content:space-between;align-items:center;gap:24px;padding:22px;display:flex}.admin-simple .admin-challenge-list>article>div:first-child{min-width:0}.admin-simple .admin-challenge-list small{color:#64747b;font-size:12px}.admin-simple .admin-challenge-list h3{color:#243c44;margin:8px 0;font-size:16px;line-height:1.8}.admin-simple .admin-challenge-list p{color:#64747b;overflow-wrap:anywhere;margin:0;font-size:12px;line-height:1.8}.admin-simple .admin-challenge-row-actions{flex-shrink:0;gap:9px;display:flex}@media (width<=760px){.admin-simple .admin-challenge-stats{gap:9px}.admin-simple .admin-challenge-stats>div{padding:15px 12px}.admin-simple .admin-challenge-stats span{font-size:11px}.admin-simple .admin-challenge-stats b{font-size:22px}.admin-simple .admin-challenge-form{padding:21px 16px}.admin-simple .admin-challenge-form-row{grid-template-columns:1fr;gap:18px}.admin-simple .admin-challenge-filters{grid-template-columns:1fr 1fr;gap:12px}.admin-simple .admin-challenge-filters>label:first-child,.admin-simple .admin-challenge-filters>button{grid-column:1/-1}.admin-simple .admin-challenge-list>article{flex-direction:column;align-items:stretch;padding:19px}.admin-simple .admin-challenge-row-actions{justify-content:flex-end}.admin-simple .admin-challenge-form input:not([type=radio]):not([type=checkbox]),.admin-simple .admin-challenge-form textarea,.admin-simple .admin-challenge-form select,.admin-simple .admin-challenge-filters input,.admin-simple .admin-challenge-filters select{font-size:16px}.admin-simple .admin-challenge-form>footer>button{flex:1}}.admin-simple .user-analytics{color:#243c44;min-width:0}.user-analytics .ua-heading{justify-content:space-between;align-items:flex-end;gap:24px;margin:28px 0;display:flex}.user-analytics .ua-heading h1{letter-spacing:-.5px;margin:8px 0;font-size:29px}.user-analytics .ua-heading p{color:#64747b;margin:8px 0 0;font-size:14px}.user-analytics .ua-heading small{color:#35705d;font-size:12px}.user-analytics .ua-heading-actions{flex-shrink:0;align-items:flex-end;gap:12px;display:flex}.user-analytics label{color:#64747b;gap:7px;min-width:0;font-size:12px;display:grid}.admin-simple .user-analytics input,.admin-simple .user-analytics select{box-sizing:border-box;color:#243c44;width:100%;min-height:44px;font:14px/1.5 var(--ui-font);background:#fff;border:1px solid #d5dfe1;border-radius:9px;padding:10px 12px}.user-analytics .ua-content{gap:22px;display:grid}.user-analytics .ua-loading{opacity:.6}.user-analytics .ua-kpis{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.user-analytics .ua-kpis article{background:#fff;border:1px solid #e0e7e9;border-radius:13px;flex-direction:column;align-items:flex-start;gap:10px;padding:22px;display:flex}.user-analytics .ua-kpis article>span{color:#64747b;font-size:13px}.user-analytics .ua-kpis article>b{color:#294d43;font-variant-numeric:tabular-nums;font-size:32px;font-weight:600;line-height:1.1}.user-analytics .ua-kpis small{color:#64747b;font-size:12px}.remote-admin.admin-simple .ua-kpis button{color:#326b56;min-height:24px;box-shadow:none;background:0 0;border:0;padding:0;font-size:12px}.user-analytics .ua-overview-grid{grid-template-columns:1fr 1fr;gap:20px;display:grid}.user-analytics .ua-panel{background:#fff;border:1px solid #e0e7e9;border-radius:14px;min-width:0;padding:24px}.user-analytics .ua-panel>header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;margin-bottom:23px;display:flex}.user-analytics h2{margin:0;font-size:18px}.user-analytics .ua-panel>header>span{color:#64747b;font-size:11px}.user-analytics .ua-panel header p{color:#64747b;margin:8px 0 0;font-size:12px;line-height:1.8}.user-analytics .ua-stages{gap:17px;margin:28px 0;display:grid}.user-analytics .ua-stages>div{grid-template-columns:95px 1fr 30px;align-items:center;gap:12px;font-size:12px;display:grid}.user-analytics .ua-stages b{text-align:right;font-size:14px}.user-analytics .ua-meter{background:#eef2f0;border-radius:20px;height:9px;overflow:hidden}.user-analytics .ua-meter i{background:#5b8b75;border-radius:20px;height:100%;display:block}.user-analytics .ua-followups{flex-wrap:wrap;gap:9px;display:flex}.remote-admin.admin-simple .ua-followups button{align-items:center;gap:14px;font-size:12px;display:flex}.user-analytics .ua-note{color:#64747b;margin:16px 0 0;line-height:1.9;font-size:12px!important}.user-analytics .ua-chart-legend{color:#64747b;gap:18px;font-size:11px;display:flex}.user-analytics .ua-chart-legend span{align-items:center;gap:7px;display:flex}.user-analytics .ua-chart-legend i{background:#b79a65;border-radius:2px;width:7px;height:7px}.user-analytics .ua-chart-legend span+span i{background:#5b8b75}.user-analytics .ua-chart-scroll{margin-top:16px;overflow-x:auto}.user-analytics .ua-chart{align-items:stretch;gap:4px;padding-top:8px;display:flex}.user-analytics .ua-chart-day{flex:1;min-width:9px;position:relative}.user-analytics .ua-chart-day>div{border-bottom:1px solid #dfe7e3;justify-content:center;align-items:flex-end;gap:2px;height:116px;display:flex}.user-analytics .ua-chart-day i{border-radius:3px 3px 0 0;flex:1;max-width:15px;display:block}.user-analytics .ua-new-bar{background:#b79a65}.user-analytics .ua-visit-bar{background:#5b8b75}.user-analytics .ua-chart-day>small{white-space:nowrap;color:#64747b;height:24px;padding-top:8px;font-size:9px;display:block}.user-analytics .ua-filters{grid-template-columns:minmax(180px,1fr) 180px 155px auto;align-items:end;gap:12px;margin:24px 0;display:grid}.user-analytics .ua-table-scroll{overflow-x:auto}.user-analytics table{border-collapse:collapse;text-align:left;width:100%;min-width:850px;font-size:12px}.user-analytics th,.user-analytics td{vertical-align:middle;border-bottom:1px solid #edf0f1;padding:17px 14px;line-height:1.7}.user-analytics thead th{color:#64747b;background:#f7f9f8;font-weight:500}.user-analytics tbody th{overflow-wrap:anywhere;max-width:240px;font-weight:400}.user-analytics td{white-space:nowrap}.user-analytics th small,.user-analytics td small{color:#64747b;margin-top:4px;font-size:11px;font-weight:400;display:block}.user-analytics th b{font-size:14px}.remote-admin.admin-simple .user-analytics td button{min-height:40px;padding:7px 12px;font-size:12px}.user-analytics .ua-pagination{justify-content:space-between;align-items:center;gap:16px;margin-top:20px;display:flex}.user-analytics .ua-pagination>span{color:#64747b;font-size:12px}.user-analytics .ua-pagination>div{gap:8px;display:flex}.user-analytics .ua-empty{text-align:center;color:#64747b;padding:30px 10px;font-size:13px;line-height:1.8}.user-analytics .ua-definitions{color:#64747b;padding:2px 4px;font-size:12px;line-height:1.9}.user-analytics .ua-definitions summary{cursor:pointer}.user-analytics .ua-definitions p{max-width:1000px}.user-analytics .ua-sr{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.admin-dialog:has(.user-detail){width:min(1000px,100% - 32px)}.user-detail>header small{color:#64747b;font-size:12px}.user-detail>header h2{margin:10px 45px 24px 0;font-size:25px}.user-detail .ua-profile{border-bottom:1px solid #e1e7e9;grid-template-columns:1fr 1fr;gap:20px 28px;margin:0;padding:0 0 24px;display:grid}.user-detail dt{color:#64747b;margin-bottom:7px;font-size:11px}.user-detail dd{overflow-wrap:anywhere;margin:0;font-size:13px;line-height:1.7}.user-detail .ua-user-id{font:11px/1.9 monospace}.user-detail .ua-detail-metrics{grid-template-columns:repeat(6,1fr);gap:8px;margin:23px 0;display:grid}.user-detail .ua-detail-metrics span{text-align:center;color:#64747b;background:#f2f6f3;border-radius:8px;padding:13px 8px;font-size:11px}.user-detail .ua-detail-metrics b{color:#294d43;margin-top:9px;font-size:21px;font-weight:600;display:block}.user-detail .ua-tabs{border-bottom:1px solid #e0e7e9;flex-wrap:wrap;gap:8px;margin-top:22px;padding-bottom:16px;display:flex}.remote-admin.admin-simple .user-detail .ua-tabs button[aria-pressed=true]{color:#fff;background:#345f50;border-color:#345f50}.user-detail .ua-story-list{gap:13px;margin-top:20px;display:grid}.user-detail .ua-story-list article{border:1px solid #e0e7e9;border-radius:10px;padding:20px}.user-detail .ua-story-list article>div{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.user-detail h3{margin:0;font-size:15px;line-height:1.8}.user-detail .ua-story-list dl{grid-template-columns:1fr 1fr;gap:16px;margin:20px 0 0;display:grid}.user-detail .ua-badge{color:#346a51;background:#edf4ef;border-radius:5px;padding:4px 8px;font-size:10px}.user-detail .ua-story-list small{color:#64747b;font-size:11px}.user-detail .ua-subtitle{flex-wrap:wrap;align-items:center;gap:14px;margin:26px 0 14px;display:flex}.user-detail .ua-subtitle small{color:#64747b;font-size:11px;font-weight:400}.user-detail .ua-compact-list article{border-bottom:1px solid #e6ece8;justify-content:space-between;align-items:center;gap:16px;padding:15px 0;font-size:13px;display:flex}.user-detail .ua-compact-list article>div{flex:1;min-width:0}.user-detail .ua-compact-list small{color:#64747b;margin-top:5px;font-size:11px;display:block}.user-detail .ua-events{margin:22px 0;padding:0;list-style:none}.user-detail .ua-events li{border-bottom:1px solid #e6ece8;grid-template-columns:150px 1fr;gap:20px;padding:17px 0;display:grid}.user-detail .ua-events time{color:#64747b;font-size:11px}.user-detail .ua-events b{font-size:12px;font-weight:500}.user-detail .ua-events span{margin-top:7px;font-size:13px;line-height:1.8;display:block}@media (width>=1400px){.user-analytics .ua-kpis{grid-template-columns:repeat(6,minmax(0,1fr))}}@media (width<=950px){.user-analytics .ua-overview-grid{grid-template-columns:1fr}.user-analytics .ua-filters{grid-template-columns:1fr 1fr}.user-analytics .ua-filters label:first-child,.user-analytics .ua-filters>button{grid-column:1/-1}}@media (width<=600px){.user-analytics .ua-heading{flex-direction:column;align-items:stretch;gap:20px}.user-analytics .ua-heading h1{font-size:25px}.user-analytics .ua-heading-actions{grid-template-columns:1fr auto;align-items:end;display:grid}.user-analytics .ua-kpis{grid-template-columns:1fr 1fr;gap:10px}.user-analytics .ua-kpis article{padding:18px 13px}.user-analytics .ua-kpis article>b{font-size:28px}.user-analytics .ua-kpis small{font-size:10px;line-height:1.7}.user-analytics .ua-kpis article>span{font-size:11px}.user-analytics .ua-panel{padding:20px 14px}.user-analytics .ua-panel>header{gap:10px}.user-analytics .ua-stages>div{grid-template-columns:85px 1fr 22px;gap:7px}.user-analytics .ua-pagination{flex-direction:column;align-items:stretch}.user-analytics .ua-pagination>div>button{flex:1}.admin-simple .user-analytics input,.admin-simple .user-analytics select{font-size:16px}.user-detail .ua-profile{grid-template-columns:1fr;gap:17px}.user-detail .ua-detail-metrics{grid-template-columns:repeat(3,1fr)}.user-detail .ua-story-list dl{grid-template-columns:1fr}.user-detail .ua-story-list article{padding:16px}.user-detail .ua-events li{grid-template-columns:1fr;gap:7px}.user-detail .ua-compact-list article{gap:10px}.user-detail .ua-tabs button{flex:1;padding-inline:8px;font-size:12px}}.user-analytics .ua-trend-details{color:#64747b;margin-top:14px;font-size:12px;line-height:1.8}.user-analytics .ua-trend-details summary{cursor:pointer}.user-analytics .ua-trend-table{max-height:240px;margin-top:10px;overflow:auto}.user-analytics .ua-trend-table table{min-width:0}.user-analytics .ua-trend-table th,.user-analytics .ua-trend-table td{padding:8px 10px;font-size:11px}.user-analytics .ua-trend-table thead{position:sticky;top:0}.zhiye-v3 .entry-shortcuts .z3-experience-grid{gap:16px;padding:14px 0 0}.zhiye-v3.experience-upgrade .entry-shortcuts .z3-experience-card{--shortcut-ink:#77603b;--shortcut-base:#e5d6b7;--shortcut-paper:#f4e9d4;width:auto;min-width:0;min-height:132px;box-shadow:none;isolation:auto;background:0 0;border:0;border-radius:20px;flex-direction:row;justify-content:flex-start;align-items:center;gap:17px;padding:20px 16px;transition:background .2s,transform .2s;display:flex;overflow:visible}.zhiye-v3 .entry-shortcuts .z3-experience-card:before,.zhiye-v3 .entry-shortcuts .z3-experience-card:after{content:none}.zhiye-v3.experience-upgrade .entry-shortcuts .experience-decision{--shortcut-ink:#3e6b5a;--shortcut-base:#c6dcd0;--shortcut-paper:#e7f2eb}.zhiye-v3.experience-upgrade .entry-shortcuts .experience-challenge{--shortcut-ink:#976348;--shortcut-base:#e9cdbb;--shortcut-paper:#f8e8dc}.zhiye-v3.experience-upgrade .entry-shortcuts .experience-story{--shortcut-ink:#4d6d85;--shortcut-base:#cbdbe5;--shortcut-paper:#e8f1f7}.zhiye-v3 .entry-shortcuts .z3-experience-card>span{margin:0}.zhiye-v3 .entry-shortcuts .experience-shortcut-icon{width:76px;height:76px;color:var(--shortcut-ink);background:linear-gradient(145deg,var(--shortcut-paper),var(--shortcut-base));border:0;border-radius:26px;flex:0 0 76px;place-items:center;transition:transform .22s,box-shadow .22s;display:grid;position:relative;box-shadow:0 5px 14px #00000012}.zhiye-v3 .entry-shortcuts .experience-shortcut-symbol{flex-shrink:0;width:47px;height:47px;position:static}.zhiye-v3 .entry-shortcuts .experience-shortcut-copy{flex:1;min-width:0;display:block}.zhiye-v3 .entry-shortcuts .z3-experience-card b{font:500 16px/1.7 var(--ui-font);color:#f1eee4;letter-spacing:.01em;max-width:none}.zhiye-v3 .entry-shortcuts .z3-experience-card em{font:12px/1.8 var(--ui-font);color:#a9b5af;max-width:13em;margin-top:5px;display:block}.zhiye-v3 .entry-shortcuts .z3-experience-card>svg{display:none}.zhiye-v3.experience-upgrade .entry-shortcuts .z3-experience-card:hover{box-shadow:none;background:#ffffff04;transform:translateY(-1px)}.zhiye-v3 .entry-shortcuts .z3-experience-card:hover .experience-shortcut-icon{transform:translateY(-3px)rotate(-3deg);box-shadow:0 9px 20px #00000020}.zhiye-v3.experience-upgrade .entry-shortcuts .z3-experience-card:active{transform:translateY(1px)}.zhiye-v3.experience-upgrade .entry-shortcuts .z3-experience-card:focus-visible{outline-offset:5px;outline:2px solid #e1ca94}.zhiye-v3 .entry-style-compare{color:#d5dfd8;background:#ffffff05;border:1px dashed #627064;border-radius:12px;justify-content:space-between;align-items:center;gap:16px;margin:20px 0 12px;padding:15px 18px;display:flex}.entry-style-compare>div:first-child b{font-size:12px;font-weight:500;display:block}.entry-style-compare span{color:#a8b8ae;margin-top:4px;font-size:11px;line-height:1.8;display:block}.entry-style-compare>div:last-child{flex-shrink:0;gap:6px;display:flex}.zhiye-v3.experience-upgrade .entry-style-compare button{color:#cad8ce;background:0 0;border:1px solid #708173;border-radius:8px;min-height:44px;padding:10px 15px;font-size:12px}.zhiye-v3.experience-upgrade .entry-style-compare button[aria-pressed=true]{color:#233c33;background:#dfd0ac;border-color:#dfd0ac}@media (width>=761px) and (width<=1180px){.zhiye-v3.experience-upgrade .entry-shortcuts .z3-experience-card{text-align:center;flex-direction:column;gap:15px;min-height:166px;padding:16px 10px}.zhiye-v3 .entry-shortcuts .z3-experience-card em{max-width:none}.zhiye-v3 .entry-shortcuts .experience-shortcut-copy{flex:0}.zhiye-v3 .entry-shortcuts .z3-experience-card b{font-size:15px}}@media (width<=760px){.zhiye-v3 .entry-shortcuts .z3-experience-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:5px;padding:16px 12px 0;overflow:visible}.zhiye-v3.experience-upgrade .entry-shortcuts .z3-experience-card{text-align:center;border-radius:15px;flex-direction:column;align-items:center;gap:13px;min-height:126px;padding:3px 2px 12px}.zhiye-v3 .entry-shortcuts .experience-shortcut-icon{border-radius:22px;flex:0 0 62px;width:62px;height:62px}.zhiye-v3 .entry-shortcuts .experience-shortcut-symbol{width:39px;height:39px}.zhiye-v3 .entry-shortcuts .z3-experience-card b{max-width:6em;font-size:12px;font-weight:500;line-height:1.65}.zhiye-v3 .entry-shortcuts .z3-experience-card em{display:none}.zhiye-v3 .entry-shortcuts .experience-shortcut-copy{flex:0;justify-content:center;width:100%;display:flex}.zhiye-v3 .entry-style-compare{flex-direction:column;align-items:stretch;gap:12px;margin:16px 12px 10px;padding:15px}.entry-style-compare>div:last-child{grid-template-columns:1fr 1fr;display:grid}}@media (width<=350px){.zhiye-v3 .entry-shortcuts .experience-shortcut-icon{border-radius:18px;flex-basis:54px;width:54px;height:54px}.zhiye-v3 .entry-shortcuts .experience-shortcut-symbol{width:35px;height:35px}.zhiye-v3 .entry-shortcuts .z3-experience-card b{font-size:11px}}@media (prefers-reduced-motion:reduce){.zhiye-v3 .entry-shortcuts .z3-experience-card:hover .experience-shortcut-icon{transform:none}.zhiye-v3.experience-upgrade .entry-shortcuts .z3-experience-card,.zhiye-v3 .entry-shortcuts .experience-shortcut-icon{transition:none}}.zhiye-v3.watch-page{background:#06111a;flex-direction:column;height:100dvh;min-height:0;padding:0;display:flex;overflow:hidden}.watch-page .learner-header.site-header{flex-shrink:0}.watch-heading{color:#e9eee7;flex-shrink:0;justify-content:space-between;align-items:center;gap:16px;width:min(1280px,100% - 64px);margin:0 auto;padding:23px 0 19px;display:flex}.watch-heading>div{align-items:baseline;gap:20px;display:flex}.watch-heading h1{font:500 23px/1.4 var(--ui-font);letter-spacing:.06em;margin:0}.watch-heading p{color:#96a8a4;margin:0;font-size:13px}.watch-heading>span{color:#9baea8;font-variant-numeric:tabular-nums;font-size:12px}.watch-feed{overscroll-behavior-y:contain;scroll-snap-type:y mandatory;scrollbar-width:none;outline-offset:-3px;flex:1;min-height:0;overflow-y:auto}.watch-feed::-webkit-scrollbar{display:none}.watch-slide{scroll-snap-align:start;scroll-snap-stop:always;justify-content:center;align-items:center;height:100%;min-height:100%;padding:14px 32px 38px;display:flex}.watch-slide-inner{grid-template-columns:minmax(0,2.5fr) minmax(235px,1fr);align-items:center;gap:40px;width:min(1280px,100%);min-width:0;display:grid}.watch-media{min-width:0}.watch-player-group{position:relative}.watch-video-frame,.watch-poster{aspect-ratio:16/9;background:#020609;border-radius:18px;width:100%;position:relative;overflow:hidden;box-shadow:0 18px 60px #0003}.watch-video-frame>iframe,.watch-video-frame>video{object-fit:contain;pointer-events:none;border:0;width:100%;height:100%;display:block}.watch-poster>.story-cover{aspect-ratio:16/9;width:100%;height:100%;min-height:0}.watch-poster img{object-fit:contain}.zhiye-v3.experience-upgrade .watch-video-touch{border-radius:inherit;cursor:pointer;touch-action:pan-y;color:#f4f5ee;width:100%;height:100%;box-shadow:none;background:0 0;border:0;place-items:center;padding:0;display:grid;position:absolute;inset:0}.watch-video-touch>span{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#07141cba;border:1px solid #ffffff30;border-radius:999px;align-items:center;gap:10px;padding:13px 20px;font-size:13px;display:flex}.watch-video-touch svg{width:18px;height:18px}.watch-playback-controls{color:#b8c5c0;align-items:center;gap:10px;min-height:56px;display:flex}.zhiye-v3.experience-upgrade .watch-playback-controls button{white-space:nowrap;color:#d9e3dc;cursor:pointer;min-height:44px;box-shadow:none;background:0 0;border:0;border-radius:8px;padding:6px 10px;font-size:12px}.watch-playback-controls input{accent-color:#d8c28a;cursor:pointer;flex:1;width:0;min-width:25px;height:32px}.watch-time{font-variant-numeric:tabular-nums;white-space:nowrap;font-size:11px}.watch-story-copy{color:#edf0e8;min-width:0}.watch-eyebrow{color:#cbb98f;align-items:center;gap:12px;font-size:12px;line-height:1.7;display:flex}.watch-eyebrow span+span{color:#95a6a0}.watch-story-copy h2{overflow-wrap:anywhere;margin:19px 0 15px;font:500 clamp(23px,2.5vw,35px)/1.5 Songti SC,Noto Serif SC,serif}.watch-description{color:#acbbb5;-webkit-line-clamp:3;-webkit-box-orient:vertical;margin:0 0 28px;font-size:14px;line-height:1.9;display:-webkit-box;overflow:hidden}.zhiye-v3 .watch-story-link{color:#243b32;background:#e3e8d9;border-radius:12px;justify-content:space-between;align-items:center;gap:20px;width:100%;min-height:48px;padding:12px 18px;font-size:14px;font-weight:500;text-decoration:none;display:flex}.watch-story-link svg{width:19px;height:19px}.watch-interaction-note{color:#8fa19a;margin-top:10px;font-size:11px;line-height:1.7;display:block}.watch-slide-navigation{border-top:1px solid #e7efe419;justify-content:space-between;align-items:center;gap:10px;margin-top:30px;padding-top:18px;display:flex}.watch-slide-navigation>span{color:#7f9590;white-space:nowrap;font-size:11px}.zhiye-v3.experience-upgrade .watch-slide-navigation button,.watch-slide-navigation>a{color:#c5d1c8;cursor:pointer;min-height:44px;box-shadow:none;background:0 0;border:0;align-items:center;padding:8px 0;font-size:12px;text-decoration:none;display:inline-flex}.watch-slide-navigation button:disabled{opacity:.3;cursor:default}.watch-end-message{color:#d8c28a;margin:15px 0 0;font-size:12px;line-height:1.7}.watch-video-error{z-index:4;color:#e6c5ab;background:#162426;border-radius:10px;align-items:center;gap:10px;max-height:calc(100% - 20px);padding:10px 14px;font-size:12px;line-height:1.6;display:flex;position:absolute;inset:auto 10px 10px;overflow-y:auto}.watch-video-error button{color:#f5e1b1;white-space:nowrap;cursor:pointer;background:0 0;border:0;min-height:44px}.watch-video-frame .player-error{z-index:3;color:#d9e4d9;background:#0d1c23f5;border:1px solid #52635e;border-radius:10px;padding:10px;font-size:12px;position:absolute;inset:auto 10px 10px}.watch-video-frame .player-error p{margin:0 0 6px}.watch-video-frame .player-error button{color:#e7d5a8;cursor:pointer;background:0 0;border:0;min-height:44px}.watch-state{color:#bcc9bf;text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:15px;padding:30px;display:flex}.watch-state a{color:#e3d1a9}.watch-state button{color:#e0e8db;cursor:pointer;background:0 0;border:1px solid #829487;border-radius:10px;min-height:44px;padding:8px 18px}.watch-accessible-status{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.watch-page :is(button,a,input):focus-visible{outline-offset:3px;outline:2px solid #e1ca94}@media (width>=761px) and (height<=650px){.watch-heading{padding:12px 0}.watch-slide{padding-bottom:15px}.watch-slide-inner{grid-template-columns:minmax(0,1.8fr) minmax(235px,1fr);gap:25px;max-width:1000px}.watch-story-copy h2{margin:12px 0;font-size:23px}.watch-description{-webkit-line-clamp:2;margin-bottom:15px;font-size:12px}.watch-slide-navigation{margin-top:15px;padding-top:8px}}@media (width<=900px){.zhiye-v3.watch-page{padding-bottom:calc(66px + env(safe-area-inset-bottom));background:radial-gradient(at 50% 32%,#162b2c 0%,#06111a 65%)}.watch-page .mobile-bottom-nav a{white-space:nowrap;flex:20%;padding-inline:2px;font-size:12px}.zhiye-v3 .watch-heading{width:100%;padding:12px 16px 10px}.watch-heading>div{gap:10px;min-width:0}.watch-heading h1{font-size:18px}.watch-heading p,.watch-heading>span{font-size:12px}.zhiye-v3 .watch-slide{align-items:stretch;min-height:0;padding:0 0 12px}.zhiye-v3 .watch-slide-inner{grid-template-rows:minmax(0,1fr) auto;grid-template-columns:minmax(0,1fr);gap:12px;width:100%;max-width:600px;height:100%;min-height:0;display:grid}.zhiye-v3 .watch-media{justify-content:center;align-items:center;width:100%;height:100%;min-height:0;display:flex;container-type:size}.zhiye-v3 .watch-player-group{flex:none;width:100%;min-width:0;max-width:100%}.zhiye-v3 .watch-video-frame,.zhiye-v3 .watch-poster{aspect-ratio:16/9;height:auto;min-height:0;max-height:none;box-shadow:none;border-radius:0;align-self:center;width:min(100cqw,177.778cqh - 88.8889px);margin-inline:auto}.zhiye-v3 .watch-playback-controls{flex-wrap:nowrap;gap:5px;min-height:50px;padding:0 10px}.zhiye-v3.experience-upgrade .watch-playback-controls button{flex-shrink:0;padding-inline:6px;font-size:12px}.zhiye-v3 .watch-story-copy{overscroll-behavior-y:contain;width:100%;min-height:0;max-height:min(310px,45dvh);padding:0 16px;overflow-y:auto}.zhiye-v3 .watch-eyebrow{flex-wrap:wrap;font-size:12px}.zhiye-v3 .watch-story-copy h2{-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:8px 0;font-size:22px;line-height:1.45;display:-webkit-box;overflow:hidden}.zhiye-v3 .watch-description{-webkit-line-clamp:2;margin-bottom:14px;font-size:14px;line-height:1.7}.zhiye-v3 .watch-story-link{min-height:46px;padding:11px 16px;font-size:13px}.zhiye-v3 .watch-interaction-note{margin-top:6px;font-size:12px}.zhiye-v3 .watch-slide-navigation{column-gap:8px;margin-top:12px;padding-top:6px}.zhiye-v3 .watch-slide-navigation>span{font-size:11px}.zhiye-v3 .watch-end-message{margin-top:8px;font-size:12px}.watch-video-error{border-radius:0}}@media (width<=900px) and (height<=740px) and (orientation:portrait){.zhiye-v3 .watch-heading{padding-block:8px}.zhiye-v3 .watch-slide-inner{gap:6px}.zhiye-v3 .watch-story-copy h2{margin:5px 0;font-size:19px}.zhiye-v3 .watch-description{-webkit-line-clamp:1;margin-bottom:10px}.zhiye-v3 .watch-slide-navigation{margin-top:6px;padding-top:0}.zhiye-v3 .watch-interaction-note{display:none}}@media (width<=900px) and (height<=620px) and (orientation:portrait){.zhiye-v3 .watch-heading p,.zhiye-v3 .watch-description,.zhiye-v3 .watch-eyebrow{display:none}.zhiye-v3 .watch-story-copy h2{margin:0 0 6px;font-size:17px}}@media (width<=900px) and (orientation:landscape){.zhiye-v3 .watch-heading{display:none}.zhiye-v3 .watch-slide{padding:8px max(16px,env(safe-area-inset-right)) 8px max(16px,env(safe-area-inset-left))}.zhiye-v3 .watch-slide-inner{grid-template-rows:minmax(0,1fr);grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:16px;max-width:none}.zhiye-v3 .watch-story-copy{align-self:center;max-height:100%;padding:0}.zhiye-v3 .watch-story-copy h2{margin:0 0 10px;font-size:18px}.zhiye-v3 :is(.watch-description,.watch-interaction-note,.watch-eyebrow,.watch-slide-navigation>span){display:none}.zhiye-v3 .watch-slide-navigation{grid-template-columns:1fr 1fr;margin-top:8px;padding-top:0}.zhiye-v3 .watch-video-frame,.zhiye-v3 .watch-poster{border-radius:10px}}@media (prefers-reduced-motion:reduce){.watch-feed{scroll-behavior:auto}}:is(.zhiye-v3,.story-share-shell,.learner-auth-shell){font-family:var(--ui-font);-webkit-text-size-adjust:100%;-moz-text-size-adjust:100%;text-size-adjust:100%}:is(.zhiye-v3,.story-share-shell,.learner-auth-shell) :is(button,input,select,textarea){font-family:var(--ui-font);letter-spacing:0}.zhiye-v3 :is(.z3-hero-copy h1,.z3-section-heading h2,.z3-random h2,.z3-explore-heading h1,.z3-explore-story-copy h3,.z3-story-card-copy h3,.watch-story-copy h2),.story-share-shell :is(.story-share-copy h1,.z3-journey-heading h2){font-family:var(--story-font);letter-spacing:0;overflow-wrap:anywhere}.zhiye-v3 .learner-header.site-header nav a{font:500 14px/1.4 var(--ui-font);white-space:nowrap;justify-content:center;align-items:center;display:flex}.zhiye-v3 .learner-header.site-header nav a.active{font-weight:600}.zhiye-v3 :is(.z3-hero-meta,.z3-explore-card-meta,.watch-eyebrow){row-gap:6px;line-height:1.6}.zhiye-v3 :is(.z3-story-card-copy h3,.z3-explore-story-copy h3){line-height:1.55}.zhiye-v3 .z3-story-card-copy>div svg,.zhiye-v3 .z3-explore-card-action svg{flex-shrink:0}.zhiye-v3 .entry-shortcuts .experience-shortcut-copy{align-self:center}.zhiye-v3 .entry-shortcuts .z3-experience-card b{text-wrap:pretty;line-height:1.6}.zhiye-v3 .account-stat-grid b,.zhiye-v3 .watch-time,.zhiye-v3 .challenge-personal,.zhiye-v3 .challenge-ranking strong{font-variant-numeric:tabular-nums}.zhiye-v3 .watch-heading>span{white-space:nowrap;flex-shrink:0}.zhiye-v3 .watch-story-copy h2{line-height:1.5}.zhiye-v3 .watch-playback-controls{align-items:center;line-height:1.4}.zhiye-v3.experience-upgrade .watch-playback-controls button{font-size:13px;font-weight:500}.zhiye-v3 .watch-time{text-align:center;min-width:3.2em;font-size:12px}.zhiye-v3 .watch-slide-navigation{grid-template-columns:1fr auto 1fr;align-items:center;column-gap:12px;display:grid}.zhiye-v3 .watch-slide-navigation>:last-child{justify-self:end}.zhiye-v3 .watch-slide-navigation>span{text-align:center;font-size:12px}.zhiye-v3.experience-upgrade .watch-slide-navigation button,.zhiye-v3 .watch-slide-navigation>a{white-space:nowrap;font-size:13px;line-height:1.5}.zhiye-v3 :is(.watch-interaction-note,.watch-end-message){font-size:12px;line-height:1.7}.zhiye-v3.challenge-page .challenge-fine{line-height:1.7}@media (width>=761px){.zhiye-v3 .z3-story-card-copy h3,.zhiye-v3 .z3-explore-story-copy h3{min-height:3.1em}.zhiye-v3 .challenge-category-copy>p{line-height:1.8}.zhiye-v3 .entry-shortcuts .z3-experience-card{align-items:center}}@media (width<=760px){.zhiye-v3 .mobile-bottom-nav a{font:500 12px/1.4 var(--ui-font);gap:4px}.zhiye-v3 .mobile-bottom-nav a>span{white-space:nowrap;line-height:1.4;display:block}.zhiye-v3 .mobile-bottom-nav a svg{flex-shrink:0;width:21px;height:21px}.zhiye-v3 .mobile-bottom-nav a.active{font-weight:600}.zhiye-v3 .entry-shortcuts .experience-shortcut-copy{align-self:stretch;align-items:flex-start}.zhiye-v3 .entry-shortcuts .z3-experience-card b{max-width:6em;min-height:3.2em;font-size:12px;line-height:1.6}.zhiye-v3 .entry-shortcuts .z3-experience-card{gap:12px}.zhiye-v3 .z3-section-heading{align-items:center;gap:16px}.zhiye-v3 .z3-section-heading:has(>button){justify-content:space-between;display:flex}.zhiye-v3 .z3-section-heading h2{line-height:1.45}.zhiye-v3 .z3-section-heading>button{flex-shrink:0;margin-top:0}.zhiye-v3 .z3-story-card-copy h3{min-height:3.1em}.zhiye-v3 .watch-heading,.zhiye-v3 .watch-story-copy{width:100%;padding-inline:16px}.zhiye-v3 .watch-heading>div{gap:10px;min-width:0}.zhiye-v3 .watch-heading p{font-size:12px;line-height:1.5}.zhiye-v3 .watch-heading>span,.zhiye-v3 .watch-eyebrow{font-size:12px}.zhiye-v3 .watch-description{font-size:14px;line-height:1.7}.zhiye-v3 .watch-playback-controls{gap:5px;padding-inline:10px}.zhiye-v3.experience-upgrade .watch-playback-controls button{padding-inline:6px;font-size:12px}.zhiye-v3 .challenge-card-meta .challenge-personal,.zhiye-v3 .challenge-card-meta .challenge-text-button,.zhiye-v3 .challenge-footnote{font-size:12px;line-height:1.7}}@media (width<=350px){.zhiye-v3 .watch-slide-navigation{column-gap:6px}.zhiye-v3 .watch-slide-navigation>span,.zhiye-v3 .entry-shortcuts .z3-experience-card b{font-size:11px}}@media (width<=760px) and (orientation:landscape){.zhiye-v3 .watch-story-copy{padding:0}.zhiye-v3 .watch-slide-navigation{grid-template-columns:1fr 1fr}}@media (width<=900px){.zhiye-v3 .mobile-bottom-nav{padding-left:max(8px,env(safe-area-inset-left));padding-right:max(8px,env(safe-area-inset-right))}.zhiye-v3 .learner-header.site-header{padding-left:max(12px,env(safe-area-inset-left));padding-right:max(12px,env(safe-area-inset-right))}.zhiye-v3 .watch-playback-controls input{touch-action:none;height:44px;min-height:44px}.zhiye-v3.friend-page :is(input,select),.zhiye-v3.friend-page #friend-invite-url{font-size:16px}}