[hidden]{display:none!important}svg{width:22px;height:22px;flex-shrink:0}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit}button:disabled{cursor:not-allowed;opacity:.45}.brand{color:inherit;text-decoration:none}.brand-caption{font-size:8px;letter-spacing:1.8px;color:#7d9286;margin:12px 0 42px}.brand-dot{color:#c4f4ba}.brand-mark span{font-size:20px}.new-badge{margin-left:auto;font-size:9px;border:1px solid #405247;padding:3px 5px;border-radius:4px}.mini-element{width:48px;height:52px;border:1px solid #3c5142;border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;position:relative}.mini-element b{font-size:25px}.mini-element span{position:absolute;top:4px;left:5px;font-size:9px}.version-label{display:block;margin-top:28px;font-size:8px;letter-spacing:1.4px}.xp-pill{color:#c4f4ba;font-size:12px}.user-avatar{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#d9d6f2;color:#2a2441;font-size:11px;font-weight:700}.mobile-break{display:none}.heading-dot{color:#bce8b1}.hero{position:relative;min-height:328px;overflow:hidden}.hero-copy{position:relative;z-index:2}.hero-art{position:absolute;right:-15px;bottom:18px;width:47%;pointer-events:none}.hero-art svg{width:100%;height:auto;overflow:visible}.model-caption{display:block;text-align:center;font-family:monospace;font-size:8px;letter-spacing:2px;color:#51714e;margin-top:-15px}.hero-note{display:block;font-size:11px;margin-top:14px;opacity:.6}.hero .tag svg{width:13px;height:13px}.hero-molecule{animation:levitate 7s ease-in-out infinite;transform-origin:center}@keyframes levitate{50%{transform:translateY(-12px) rotate(5deg)}}.live-label{font-size:8px;letter-spacing:1px;color:#b2c5b8;display:flex;gap:5px;align-items:center}.live-label i{width:5px;height:5px;border-radius:50%;background:#c4f4ba}.duel-symbol{position:absolute;right:25px;top:65px;transform:rotate(-12deg);color:#a89dc7;opacity:.6}.duel-symbol svg{width:75px;height:75px}.arena-teaser{position:relative}.arena-teaser h2{position:relative}.arena-bottom{display:flex;align-items:center;gap:12px;margin-top:20px;font-size:10px;color:#8b9e92}.opponent-stack{display:flex;padding-left:6px}.opponent-stack .avatar{margin-left:-6px;display:grid;place-items:center;background:#353d32;border:2px solid #19231e;font-size:10px}.topic-card{text-align:left}.topic-card-top{display:flex;justify-content:space-between;align-items:center}.topic-count{display:flex;gap:12px;align-items:center;color:#84968a;font-size:11px}.topic-count svg{width:16px}.topic-icon{color:var(--topic-color);background:color-mix(in srgb,var(--topic-color) 9%,transparent)}.lab-banner{width:100%;display:flex;gap:20px;align-items:center;background:linear-gradient(110deg,#212725,#1b202a);border:1px solid #343c37;border-radius:16px;padding:24px;margin-top:24px;color:#e4eae1;text-align:left}.lab-banner-icon svg{width:38px;height:38px;color:#beb3e7}.lab-banner b{display:block;font-size:15px}.lab-banner small{display:block;margin-top:7px;color:#9aa59e;font-size:12px}.lab-banner-cta{display:flex;gap:10px;align-items:center;margin-left:auto;white-space:nowrap;font-size:12px}.page-footer{display:flex;justify-content:space-between;gap:20px;padding:36px 0 12px;color:#596b5f;font-size:10px}.page-footer>span:first-child{font-size:18px;font-weight:700;color:#90a294}.fine-print{font-size:12px;line-height:1.7;color:#87998c;margin:20px 0}.review-panel,.arena-start{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:24px}.review-panel p,.arena-start p{font-size:13px;color:#91a295;margin-top:8px}.arena-rules{display:flex;gap:32px;border-top:1px solid #28372e;border-bottom:1px solid #28372e;padding:20px 0;margin:0 0 30px;font-family:monospace;color:#9abd97}.arena-rules b{font:12px 'Segoe UI',sans-serif;margin-left:8px;color:#b2bfb5}.opponent-card-top{display:flex;justify-content:space-between;align-items:center}.selection-dot{width:15px;height:15px;border:1px solid #4b5a4f;border-radius:50%}.selected .selection-dot{background:#c4f4ba;border:4px solid #36573a}.opponent-avatar{color:var(--opponent-color);background:color-mix(in srgb,var(--opponent-color) 10%,transparent);font-family:Georgia,serif}.difficulty-bars{display:flex;gap:4px;margin-top:22px}.difficulty-bars i{width:100%;height:4px;border-radius:10px;background:#2a352e}.difficulty-bars .lit{background:#b6cea4}.bot-stats{display:flex;justify-content:space-between;margin-top:12px;color:#8b9c90;font-size:11px}.session-header{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:24px}.session-header>.eyebrow{font-size:10px}.session-header>span:last-child{color:#9eafa2;font-size:12px}.quiz-panel{max-width:800px;margin:0 auto}.quiz-panel>.progress-track{margin:25px 0 30px}.answer-btn{display:flex;align-items:center;gap:16px;text-align:left;width:100%}.answer-btn:disabled{opacity:1}.answer-letter{display:grid;place-items:center;width:30px;height:30px;flex-shrink:0;border:1px solid #3e4c42;border-radius:8px;font-size:12px;color:#98a99c}.answer-status{margin-left:auto}.feedback{animation:appear .2s ease-out}.feedback p{font-size:14px;line-height:1.7;margin-top:8px}.score-side{display:flex;gap:12px;align-items:center}.score-side>div>span{font-size:12px;color:#8b9c90}.score-value{display:block}.duel-score{max-width:800px;margin:0 auto 20px}.timer.urgent{color:#f3a99b;border-color:#b36858}.result-card{max-width:760px;margin:40px auto;text-align:center}.result-card h1{font-size:34px;margin:20px 0}.result-card>p{color:#9fb0a3}.result-icon{margin:0 auto 24px}.result-icon svg{width:42px;height:42px}.result-numbers{display:flex;justify-content:center;gap:65px;margin:35px 0}.result-numbers b{display:block;font-size:38px;color:#c4f4ba}.result-numbers span{display:block;font-size:12px;color:#9bac9e;margin-top:8px}.result-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}.level-panel .progress-track{margin-top:24px}.profile-orbit{color:#c4f4ba;margin-bottom:25px}.profile-orbit svg{width:60px;height:60px}.profile-numbers{display:grid;grid-template-columns:1fr 1fr;gap:25px;margin-top:35px}.profile-numbers b{display:block;font-size:28px}.profile-numbers span{font-size:12px;color:#8f9f93}.achievements-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.achievement>span{display:block;color:#7b8b7f;margin-bottom:18px}.achievement.unlocked>span{color:#c4f4ba}.achievement small{font-size:9px;letter-spacing:1px;display:block;margin-top:20px}.achievement p{font-size:12px;color:#8f9f93}.achievement.unlocked{border-color:#6d8e60}.history-row{display:grid;grid-template-columns:1fr 55px 90px;gap:10px;padding:18px 0;border-bottom:1px solid #26342c;font-size:13px}.history-row:last-child{border:0}.history-row>span:last-child{color:#87978b;font-size:11px}.leave-dialog{background:#17221b;color:#eef2e9;border:1px solid #425545;border-radius:20px;padding:30px;max-width:440px;width:calc(100% - 40px)}.leave-dialog::backdrop{background:#000a;backdrop-filter:blur(5px)}.leave-dialog p{line-height:1.7;color:#a2b1a5;margin:18px 0 25px}.leave-dialog>div{display:flex;gap:12px}.muted{color:#91a194;font-size:12px}@keyframes appear{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1450px){.hero-art{right:0;width:45%}}@media(max-width:1150px){.hero-art{opacity:.8;width:44%;right:-20px}.hero-copy h2{font-size:28px!important}.hero-copy p{max-width:230px}.hero .primary-btn{position:relative;z-index:3}.duel-symbol{display:none}}@media(max-width:760px){.brand-caption{display:none}.hero-art{width:43%;right:0;bottom:20px}.hero-copy p{font-size:13px}.hero-copy h2{font-size:30px!important}.hero{min-height:310px}.lab-banner-cta{font-size:0}.lab-banner{padding:20px}.page-footer>span:last-child{display:none}.arena-rules{gap:14px}.arena-rules span{font-size:11px}.arena-rules b{display:block;margin:6px 0 0}.review-panel,.arena-start{flex-direction:column;align-items:stretch}.session-header>.eyebrow{max-width:150px;text-align:center}.achievements-grid{grid-template-columns:1fr}.achievement{padding:22px!important}.result-card h1{font-size:28px}.brand-mark{display:none}.profile-grid{grid-template-columns:1fr}.quiz-actions{flex-wrap:wrap;gap:20px}.quiz-actions .primary-btn{width:100%}.score-side>div>span{font-size:10px}.result-numbers{gap:35px}.bottom-nav{padding-bottom:max(10px,env(safe-area-inset-bottom))}.main{padding-bottom:100px!important}.page-footer{padding-top:30px}}@media(max-width:420px){.hero-art{width:46%;right:-15px;bottom:66px;opacity:.65}.hero-copy h2{font-size:27px!important}.hero-copy p{font-size:12px}.hero .tag{font-size:8px}.hero-copy{z-index:2}.hero-note{font-size:10px}.model-caption{display:none}.mobile-break{display:block}.lab-banner small{line-height:1.5}.history-row{font-size:11px;grid-template-columns:1fr 35px 66px}.history-row>span:last-child{font-size:9px}}@media(prefers-reduced-motion:reduce){.hero-molecule{animation:none}.feedback{animation:none}}
/* Integrated layout contract */
.page-heading{display:block}.page-heading h1{max-width:850px;font-size:clamp(30px,3.1vw,44px);line-height:1.16;letter-spacing:-1.7px}.page-heading p{max-width:none;line-height:1.7}.stats-row{grid-template-columns:repeat(4,minmax(0,1fr))}.hero-art{display:block;top:auto}.hero-art svg{animation:none}.hero-copy{max-width:72%}.arena-teaser>.section-header{margin:0 0 10px;width:100%}.arena-teaser .secondary-btn{margin-top:22px}.arena-teaser .opponent-stack{position:static;margin:0;max-width:none;flex-wrap:nowrap}.arena-teaser{padding:28px}.achievement{display:block}.brand{gap:3px}.brand-mark{position:relative;margin-right:9px}.brand-mark span{position:absolute;right:0;top:0}.nav{margin-top:0}.opponent-card{color:#edf3e8}.opponent-avatar{margin-top:18px}.user-pill{background:none}.hero-note{white-space:nowrap}
@media(max-width:760px){.bottom-nav{grid-template-columns:repeat(5,minmax(0,1fr))}.bottom-nav button{font-size:9px}.stats-row{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-copy{max-width:100%}.hero-copy h2{max-width:250px}.hero-art{width:43%;bottom:50px;opacity:.65}.hero .tag{font-size:8px}.hero-copy p{max-width:240px}.hero-copy .primary-btn{margin-top:4px}.topic-count{font-size:9px;gap:2px}.topic-count svg{width:12px}.topic-card-top{gap:4px}.topic-icon{flex-shrink:0}.topbar .user-pill>span{display:flex!important}.topbar .user-pill>.user-avatar{display:grid!important}.arena-teaser{padding:24px}.page-heading h1{font-size:32px}.page-heading p{font-size:12px}.lab-banner-cta{display:none}.quiz-top{flex-wrap:wrap}.quiz-top .tag{white-space:normal}.bot-stats{gap:6px;font-size:9px}.hero{align-items:flex-start}.model-caption{display:none}.page-heading>.eyebrow{font-size:9px}.session-header{gap:6px}.session-header .ghost-btn{padding:9px;font-size:11px}.session-header>.eyebrow{max-width:120px}.user-pill{gap:8px}}