:root{--ink:#24304a;--muted:#8991a3;--orange:#ff925d;--yellow:#ffd86b;--cream:#fffaf0;--card:#fff;--line:#f2eadc;--mint:#b9e7cc;--pink:#f7c1be}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:'Noto Sans SC',sans-serif;background:var(--cream);overflow-x:hidden}.page-glow{position:fixed;width:420px;height:420px;border-radius:50%;filter:blur(2px);z-index:-1;opacity:.35}.glow-one{background:#ffe6b7;top:80px;left:-190px}.glow-two{background:#d9f4df;right:-180px;bottom:80px}.topbar{height:84px;padding:0 max(5vw,32px);display:flex;align-items:center;justify-content:space-between;position:relative;z-index:2}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;color:var(--ink)}.brand-mark{width:42px;height:42px;display:grid;place-items:center;border-radius:14px 14px 14px 5px;background:var(--orange);color:#fff;font-size:24px;font-weight:900;box-shadow:0 8px 18px #ff925d40}.brand b{display:block;font-size:17px;letter-spacing:1px}.brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:2px;margin-top:2px}.top-actions{display:flex;gap:12px;align-items:center}.pill{font-size:12px;color:#6a756f;background:#eff8e9;padding:9px 14px;border-radius:30px}.pill i{display:inline-block;width:7px;height:7px;border-radius:50%;background:#77c68b;margin-right:6px}.icon-button{background:#fff;border:1px solid var(--line);border-radius:50%;width:38px;height:38px;cursor:pointer;font-size:16px}.hero{max-width:1180px;margin:15px auto 66px;padding:40px 7% 20px;min-height:330px;display:flex;align-items:center;justify-content:space-between}.eyebrow,.section-kicker{font-size:11px;font-weight:700;letter-spacing:3px;color:#f39a73}.eyebrow span{color:var(--yellow);margin-left:7px;font-size:16px}.hero h1{font-size:clamp(35px,4vw,55px);line-height:1.22;margin:14px 0;color:var(--ink);letter-spacing:-1px}.hero h1 em{font-style:normal;color:var(--orange);position:relative}.hero h1 em:after{content:'';height:7px;background:#ffe19c;border-radius:50%;position:absolute;bottom:-1px;left:2px;right:2px;z-index:-1}.hero p{color:var(--muted);font-size:15px;margin:0 0 28px}.hero-stats{display:flex;gap:34px}.hero-stats strong{font-size:25px;color:var(--ink)}.hero-stats strong span{font-size:15px;color:var(--orange)}.hero-stats small{display:block;color:#a2a7b1;font-size:11px;margin-top:1px}.hero-art{width:330px;height:250px;position:relative}.planet{position:absolute;width:152px;height:152px;border-radius:50%;background:linear-gradient(145deg,#ffd968,#ffb76a);left:85px;top:50px;box-shadow:inset -15px -16px 0 #f4a95e55,0 20px 30px #f0bd7850;display:grid;place-items:center;transform:rotate(-8deg)}.planet span{font-family:serif;font-size:88px;color:#fffaf0;text-shadow:3px 4px #ee9b62}.orbit{position:absolute;border:1px solid #f5c878;transform:rotate(-20deg);border-radius:50%}.orbit-a{width:280px;height:85px;top:75px;left:17px}.orbit-b{width:230px;height:65px;top:92px;left:42px;border-color:#f4dba9}.spark,.star{position:absolute;color:#ffb665}.spark-a{font-size:25px;right:28px;top:70px}.spark-b{font-size:18px;left:30px;top:34px;color:#a8d8b9}.star{color:#f8a55f;font-size:15px}.star-a{left:15px;bottom:50px}.star-b{right:40px;bottom:26px}.rocket{position:absolute;right:13px;top:5px;font-size:39px;transform:rotate(28deg);filter:drop-shadow(4px 5px 0 #ffd76b)}.learning-shell{max-width:1180px;margin:auto;padding:0 5%}.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:24px}.section-heading h2{margin:4px 0 0;font-size:27px}.section-kicker{font-size:10px;color:#a5b59b}.progress-summary{width:220px;font-size:12px;color:var(--muted)}.progress-track{margin-top:9px;height:6px;background:#f0e8d9;border-radius:10px;overflow:hidden}.progress-track span{display:block;width:2.5%;height:100%;background:var(--orange);border-radius:10px;transition:width .4s}.learning-grid{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(280px,.8fr);gap:20px}.player-card,.playlist-card{background:var(--card);border:1px solid #f5ecdd;border-radius:24px;box-shadow:0 15px 40px #86775710}.player-card{padding:15px}.player-top{height:28px;display:flex;justify-content:space-between;align-items:center;padding:0 6px 11px;font-size:11px}.live-dot{color:#f2946f;font-weight:700}.player-tip{color:#abb0bb}.video-wrap{background:#202638;border-radius:17px;position:relative;overflow:hidden;aspect-ratio:632/566}.video-wrap video{width:100%;height:100%;display:block;object-fit:contain;background:#202638}.video-placeholder{position:absolute;inset:0;display:grid;place-items:center;align-content:center;background:linear-gradient(145deg,#fff0c2,#ffcc8f);color:#fff;cursor:pointer}.video-placeholder p{font-size:13px;margin-top:8px;text-shadow:0 1px #d69b67}.play-orb{width:60px;height:60px;border-radius:50%;background:#fff;color:var(--orange);display:grid;place-items:center;padding-left:3px;font-size:22px;box-shadow:0 6px 20px #c9854140}.video-wrap.is-playing .video-placeholder{display:none}.project-btn{position:absolute;right:14px;bottom:14px;border:0;border-radius:9px;background:#192134bd;color:#fff;padding:9px 12px;font-size:12px;cursor:pointer;backdrop-filter:blur(8px)}.player-bottom{display:flex;align-items:center;justify-content:space-between;padding:15px 5px 4px}.player-bottom h3{margin:0;font-size:16px}.player-bottom p{font-size:12px;color:var(--muted);margin:5px 0 0}.next-btn{border:0;background:#ffeadf;color:#e87e58;border-radius:12px;padding:11px 15px;font-weight:700;cursor:pointer}.next-btn span{font-size:18px;margin-left:4px}.playlist-card{padding:18px 13px 15px}.playlist-head{display:flex;align-items:center;justify-content:space-between;padding:0 5px 13px}.playlist-head h3{margin:0;font-size:16px}.playlist-head p{margin:4px 0 0;color:var(--muted);font-size:11px}.count-badge{font-size:11px;color:#83ae91;background:#edf8ef;padding:7px 10px;border-radius:20px}.lesson-list{height:378px;overflow-y:auto;padding:1px 4px 3px}.lesson-list::-webkit-scrollbar{width:5px}.lesson-list::-webkit-scrollbar-thumb{background:#f0dfc8;border-radius:8px}.lesson-item{height:53px;display:flex;align-items:center;gap:11px;padding:0 11px;border-radius:13px;cursor:pointer;transition:.2s;margin:2px 0}.lesson-item:hover{background:#fff6ec}.lesson-item.active{background:#fff0e6}.lesson-num{font-family:'Baloo 2';font-size:14px;color:#b5bbc4;width:25px}.lesson-item.active .lesson-num{color:var(--orange);font-weight:700}.lesson-info{flex:1}.lesson-info b{font-size:13px;font-weight:500}.lesson-info small{display:block;color:#b2b5bd;font-size:10px;margin-top:3px}.lesson-item.active .lesson-info b{color:#e17f5a;font-weight:700}.check{color:#78bd89;font-size:14px;opacity:0}.lesson-item.done .check{opacity:1}.feature-row{max-width:1070px;margin:68px auto 55px;display:grid;grid-template-columns:repeat(3,1fr);gap:30px;padding:0 5%}.feature{display:flex;gap:13px;align-items:center}.feature-icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;font-size:21px}.yellow{background:#fff0ba;color:#edac49}.mint{background:#e0f4e5;color:#65b47c}.pink{background:#ffdfdd;color:#e88a82}.feature b{font-size:13px}.feature p{font-size:11px;color:var(--muted);margin:5px 0 0;line-height:1.5}footer{border-top:1px solid #f3e8d7;display:flex;justify-content:space-between;max-width:1180px;margin:auto;padding:22px 5%;font-size:11px;color:#adb0b8}@media(max-width:800px){.hero{padding-top:20px;margin-bottom:35px}.hero-art{width:240px;transform:scale(.78);transform-origin:right center;margin-left:-50px}.learning-grid{grid-template-columns:1fr}.lesson-list{height:260px}.feature-row{grid-template-columns:1fr;gap:15px;margin-top:45px}.feature{padding:0 8%}.hero h1{font-size:36px}.hero p{font-size:13px}.hero-stats{gap:18px}.progress-summary{width:145px}}@media(max-width:580px){.topbar{height:70px;padding:0 20px}.pill{display:none}.hero{padding:18px 20px 0;display:block;min-height:420px}.hero-art{margin:5px auto 0;transform:scale(.8)}.section-heading{display:block}.progress-summary{margin-top:15px;width:100%}.learning-shell{padding:0 15px}.player-card{padding:9px}.player-bottom{align-items:start;gap:8px}.player-bottom h3{font-size:14px}.next-btn{font-size:11px;padding:10px}.feature-row{padding:0 25px}.feature p{font-size:10px}footer{padding:20px;display:block;line-height:2}}
body.projector-mode .topbar,body.projector-mode .hero,body.projector-mode .section-heading,body.projector-mode .playlist-card,body.projector-mode .feature-row,body.projector-mode footer{display:none}body.projector-mode{background:#111827}.projector-mode .learning-shell{max-width:1200px;padding:20px}.projector-mode .player-card{background:#1c2435;border:0;padding:10px}.projector-mode .player-top{color:#fff}.projector-mode .video-wrap{max-height:calc(100vh - 100px);aspect-ratio:auto;height:calc(100vh - 100px)}.projector-mode .player-bottom{color:#fff}.projector-mode .player-bottom p{color:#aeb8c8}.projector-mode .project-btn{background:#fff;color:#29334a}
@media (min-width:801px){.learning-grid{align-items:start}.player-card{align-self:start}.playlist-card{display:flex;flex-direction:column;min-height:0;align-self:start}.lesson-list{height:auto;flex:1;min-height:0}}
@media(min-width:801px){.player-actions{display:flex;gap:8px;align-items:center}.project-btn{position:static;border:0;border-radius:12px;background:#eef8f0;color:#68a477;padding:11px 13px;font-size:12px;font-weight:700;cursor:pointer}.project-btn:hover{background:#dff2e4}}
.cast-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);z-index:20;opacity:0;pointer-events:none;background:#24304a;color:#fff;padding:12px 18px;border-radius:12px;font-size:12px;box-shadow:0 8px 24px #24304a30;transition:.25s}.cast-toast.show{opacity:1;transform:translate(-50%,0)}
.player-actions{display:flex;gap:8px;align-items:center}.player-actions .project-btn{position:static;border:0;border-radius:12px;background:#eef8f0;color:#68a477;padding:11px 13px;font-size:12px;font-weight:700;cursor:pointer}.player-actions .project-btn:hover{background:#dff2e4}
.video-wrap .project-btn{position:absolute!important;right:14px!important;top:14px!important;bottom:auto!important;left:auto!important;border:0;border-radius:9px;background:#192134bd;color:#fff;padding:9px 12px;font-size:12px;cursor:pointer;backdrop-filter:blur(8px)}