:root{color-scheme:dark;--paper:#edf1e9;--muted:#a1aaa1;--line:#e2f0de1c;--lime:#c8f49d;--glass:#202a2385;--danger:#e5a99f}*{box-sizing:border-box}body{margin:0;background:#101511;color:var(--paper);font:15px/1.6 "Segoe UI","Microsoft YaHei",sans-serif;min-height:100vh}button,input{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.38;cursor:not-allowed}a{color:inherit;text-decoration:none}.ambient{position:fixed;border-radius:50%;filter:blur(100px);pointer-events:none;z-index:-1}.ambient-a{width:640px;height:650px;top:-260px;right:-100px;background:#75915c42;animation:float 22s ease-in-out infinite alternate}.ambient-b{width:650px;height:600px;bottom:-360px;left:-240px;background:#71804d26}.grain{position:fixed;inset:0;pointer-events:none;opacity:.025;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' opacity='.5' filter='url(%23n)'/%3E%3C/svg%3E");z-index:9}.workspace{width:min(1100px,calc(100% - 64px));margin:auto}.topbar{height:112px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{display:flex;gap:13px;align-items:center;font-weight:600;letter-spacing:1px}.brand-mark{width:45px;height:45px;border:1px solid #c8f49d55;border-radius:15px;display:grid;place-items:center;color:var(--lime)}.brand small{display:block;font-size:9px;letter-spacing:2.4px;font-weight:400;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:18px;font-size:12px;color:var(--muted)}.intro{display:flex;justify-content:space-between;align-items:end;padding:62px 0 50px}.eyebrow{font-size:10px;letter-spacing:2.4px;font-weight:600;color:var(--lime);margin:0 0 15px;display:flex;align-items:center;gap:10px}.tiny-line{height:1px;width:24px;background:var(--lime)}h1{font-size:clamp(40px,5.7vw,64px);font-weight:350;line-height:1.3;letter-spacing:-2px;margin:0 0 16px}h1 em{font-style:normal;color:#a7b79d}h2{font-size:25px;font-weight:500;letter-spacing:-.5px;margin:0}h3{font-size:23px;font-weight:450;margin:15px 0}.lead,.muted{color:var(--muted)}.lead{margin:0;font-size:14px}.intro-index{display:grid;text-align:right;gap:8px;padding-bottom:9px}.intro-index span{font-size:30px;font-weight:300;letter-spacing:3px}.intro-index small{color:var(--muted);font-size:11px}.glass{border:1px solid var(--line);border-radius:25px;background:linear-gradient(125deg,#38433265,#18221c80);backdrop-filter:blur(28px);-webkit-backdrop-filter:blur(28px);padding:30px;box-shadow:inset 0 1px #ffffff0a,0 25px 80px #0002;margin-bottom:24px;animation:reveal .6s cubic-bezier(.16,1,.3,1) both}.card-head,.actions{display:flex;justify-content:space-between;gap:16px;align-items:center}.card-head .eyebrow{margin-bottom:7px}.auth{max-width:510px}.auth label{display:grid;gap:9px;margin:25px 0 18px;font-size:12px;color:var(--muted)}input[type=email],input[type=password],input[type=text],input[type=number]{width:100%;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:#0d140f65;color:var(--paper);outline:none}input:focus-visible{border-color:var(--lime)}button{border:0;display:inline-flex;align-items:center;justify-content:center;gap:10px;background:transparent;color:var(--paper);border-radius:12px;padding:12px 17px;transition:background .2s,transform .2s}button:hover:not(:disabled){background:#ffffff0b;transform:translateY(-1px)}button:focus-visible,a:focus-visible{outline:2px solid var(--lime);outline-offset:4px}.primary{background:var(--lime);color:#182113;font-weight:600}.primary:hover:not(:disabled){background:#defbbf}.full{width:100%;justify-content:space-between}.quiet{font-size:12px;color:var(--muted);border:1px solid var(--line)}.icon-button{width:40px;height:40px;padding:9px;border:1px solid var(--line)}svg{display:block;flex-shrink:0}button svg{width:18px;height:18px}.tile-icon{color:var(--lime)}.hint{font-size:12px;color:#9da992;margin-top:18px;min-height:18px}.connection{display:grid;grid-template-columns:1fr 300px;align-items:center;min-height:285px;overflow:hidden}.connection h2{font-size:29px}.connection-copy .muted{max-width:450px;margin:12px 0 26px}.connection-art{height:205px;position:relative;display:flex;align-items:center;justify-content:center;flex-direction:column;color:var(--lime)}.connection-art>span{border:1px solid #c8f49d50;width:80px;height:80px;display:grid;place-items:center;border-radius:24px;background:#c8f49d0d;transform:rotate(-8deg)}.connection-art svg{width:35px;height:35px}.connection-art small{position:absolute;bottom:0;font-size:8px;letter-spacing:2px;color:var(--muted)}.orbit{position:absolute;width:190px;height:190px;border:1px solid #c8f49d12;border-radius:50%;transform:rotateX(45deg) rotate(-25deg)}.orbit.second{width:250px;height:250px;transform:rotateX(60deg) rotate(25deg)}.qr-layout{display:grid;grid-template-columns:270px 1fr;gap:40px;align-items:center;margin-top:28px}.qr-frame{width:250px;height:250px;display:grid;place-items:center;background:#fff;border-radius:18px;padding:10px;overflow:hidden}.qr-frame img{max-width:100%;max-height:100%;object-fit:contain}.loader{width:30px;height:30px;border:2px solid #738a6650;border-top-color:#64814c;border-radius:50%;animation:spin 1s linear infinite}.pill{font-size:11px;padding:7px 12px;border:1px solid #c8f49d33;border-radius:30px;color:var(--lime);background:#c8f49d0a}.library-toolbar{display:flex;justify-content:space-between;align-items:center;margin:25px 0 18px}.segmented{display:flex;padding:4px;background:#0e170f80;border-radius:12px;border:1px solid var(--line)}.segmented button{font-size:12px;padding:8px 19px;border-radius:9px;color:var(--muted)}.segmented button.active{background:#c8f49d18;color:var(--lime)}input[type=checkbox]{accent-color:var(--lime);width:17px;height:17px;flex-shrink:0;cursor:pointer}.check-all{display:flex;gap:8px;align-items:center;font-size:12px;color:var(--muted)}.library-scroll{height:340px;overflow:auto;scrollbar-width:thin;scrollbar-color:#52664a transparent;padding-right:7px}.course-row{display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line);padding:17px 6px;cursor:pointer}.course-row:hover{background:#ffffff04}.course-number{font-size:11px;font-variant-numeric:tabular-nums;color:#687b62;width:24px}.course-body{flex:1;min-width:0}.course-body strong{display:block;font-size:14px;font-weight:500}.course-body small{font-size:11px;color:var(--muted)}.course-status{font-size:10px;color:var(--muted);white-space:nowrap}.course-row.done .course-status{color:var(--lime)}.course-row.done{opacity:.55}.library-footer{border-top:1px solid var(--line);padding-top:23px;margin-top:19px;display:flex;align-items:center;justify-content:space-between;gap:15px}.library-footer strong,.library-footer small{display:block}.library-footer strong{font-size:13px;font-weight:500}.library-footer small{font-size:10px;color:var(--muted);margin-top:3px}.count{font-size:11px;border-radius:20px;padding:3px 7px;background:#ffffff08;color:var(--muted);margin-left:6px}.queue-center{text-align:center;padding:27px 0}.queue-orb{border:1px solid #c8f49d3a;width:60px;height:60px;border-radius:20px;display:grid;place-items:center;color:var(--lime);margin:auto}.queue-center h3{font-size:42px;margin:0;letter-spacing:-1px}.danger{color:var(--danger)}.player{display:grid;grid-template-columns:185px 1fr;gap:32px;align-items:center}.player-art{display:grid;place-items:center;gap:17px}.record{width:160px;height:160px;border-radius:50%;display:grid;place-items:center;background:repeating-radial-gradient(circle,#162016 0 2px,#34432c 3px,#1f2c1d 4px);border:1px solid #ffffff18;box-shadow:0 20px 35px #0004;animation:spin 22s linear infinite}.record>span{width:55px;height:55px;display:grid;place-items:center;background:var(--lime);color:#21351c;border-radius:50%}.player-meta,.player-bottom,.track-label{display:flex;justify-content:space-between;align-items:center;gap:12px}.player-meta .eyebrow{margin:0}.player-content>p{font-size:11px;margin:20px 0 4px}.player-content h2{font-size:29px;line-height:1.4;min-height:41px}.track-progress{margin:24px 0}.track-progress progress{display:block;width:100%;height:5px;border:0;border-radius:20px;overflow:hidden;background:#ffffff0d}.track-progress progress::-webkit-progress-bar{background:#ffffff0d}.track-progress progress::-webkit-progress-value{background:var(--lime);transition:width 1s}.track-progress progress::-moz-progress-bar{background:var(--lime)}.track-label{font-size:10px;color:var(--muted);margin-top:10px;font-variant-numeric:tabular-nums}.player-bottom{font-size:12px;color:var(--muted)}.equalizer{display:flex;height:15px;gap:4px;align-items:center}.equalizer b{width:3px;height:8px;background:var(--lime);animation:pulse 1.3s ease-in-out infinite alternate}.equalizer b:nth-child(2n){animation-delay:.4s}.equalizer b:nth-child(3n){animation-delay:.7s}.playlist{grid-column:1/-1;border-top:1px solid var(--line);max-height:300px;overflow:auto;padding-top:12px}.playlist .course-row{cursor:default}.empty{display:grid;place-items:center;height:200px;text-align:center;color:var(--muted);font-size:13px}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:#30402bee;border:1px solid #c8f49d3d;border-radius:13px;padding:14px 22px;max-width:calc(100% - 32px);color:var(--paper);backdrop-filter:blur(24px);z-index:20}.toast.bad{border-color:#c37b73}.hidden{display:none!important}footer{display:flex;justify-content:space-between;padding:44px 0;color:#657362;font-size:10px;letter-spacing:1px}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{to{height:15px}}@keyframes float{to{transform:translate(-60px,90px)}}@keyframes reveal{from{opacity:0;transform:translateY(17px)}to{opacity:1;transform:translateY(0)}}@media(max-width:700px){.workspace{width:calc(100% - 32px)}.topbar{height:83px}.top-actions #identity{max-width:130px;overflow:hidden;text-overflow:ellipsis}.intro{padding:37px 0 30px}.intro-index{display:none}.glass{padding:22px;border-radius:20px}.connection{grid-template-columns:1fr;min-height:240px}.connection-art{display:none}.connection h2{font-size:24px}.qr-layout{grid-template-columns:1fr;justify-items:center;gap:20px}.qr-layout>div:last-child{text-align:center}.library-toolbar{flex-wrap:wrap;gap:14px}.library-scroll{height:320px}.player{grid-template-columns:1fr;gap:17px}.player-art{display:none}.player-content h2{font-size:24px}.course-row{gap:10px}.course-number{display:none}.card-head h2{font-size:22px}.card-head .quiet{font-size:10px;padding:9px}.segmented button{padding:7px 13px}footer span:last-child{display:none}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}
.admin-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(205px,1fr));gap:14px;margin:22px 0 30px}.admin-tile{display:grid;gap:7px;background:#ffffff04;border:1px solid var(--line);border-radius:15px;padding:18px;overflow-wrap:anywhere}.admin-tile span,.admin-tile small{font-size:12px;color:var(--muted)}.admin-tile strong{font-size:22px;font-weight:400}.admin-mail{height:260px;margin-top:18px}

dialog.glass{max-width:560px;width:calc(100% - 40px);color:var(--text,#edf3ee);background:#18201df2}dialog::backdrop{background:#060b09b8;backdrop-filter:blur(8px)}#skipped-results{margin-bottom:24px}
progress::-webkit-progress-value{transition:width .9s linear}
@media(max-width:700px){.topbar{height:auto;min-height:83px;flex-wrap:wrap;gap:12px;padding:16px 0}.top-actions{margin-left:auto;gap:10px;max-width:100%;flex-wrap:wrap}}@media(prefers-reduced-motion:reduce){progress::-webkit-progress-value{transition:none!important}}

.auth input{appearance:none;caret-color:var(--paper)}.auth input:-webkit-autofill{-webkit-text-fill-color:var(--paper);box-shadow:0 0 0 1000px #182019 inset;caret-color:var(--paper)}

/* Account identity stays left; account controls stay together on the right. */
.top-actions{min-width:0;flex-wrap:nowrap}.top-actions #identity{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;margin-left:auto}@media(max-width:700px){.top-actions{width:100%;margin-left:0;justify-content:space-between;flex-wrap:nowrap}.top-actions #identity{max-width:none;flex:1}#rotate-password{white-space:nowrap}.account-actions{gap:8px}}

.more-wrap{position:relative}.more-menu{position:absolute;right:0;top:calc(100% + 10px);width:210px;padding:8px;border:1px solid var(--line);border-radius:16px;background:#1b251ef5;backdrop-filter:blur(24px);box-shadow:0 18px 45px #0005;z-index:30}.more-menu button{width:100%;justify-content:flex-start;border-radius:10px;font-size:13px;white-space:nowrap}.more-menu svg{width:18px;height:18px;color:var(--lime)}.more-menu .danger svg{color:var(--danger)}#delete-form label{display:grid;gap:10px;margin-top:22px;font-size:12px;color:var(--muted)}

.more-menu button{padding:12px 17px;font-size:13px;line-height:1.6;gap:10px}.project-link{display:inline-flex;align-items:center;gap:8px;color:var(--lime);overflow-wrap:anywhere}.project-link:hover{text-decoration:underline}.project-link svg{width:16px;height:16px}

.more-menu .menu-link{display:flex;align-items:center;padding:12px 17px;gap:10px;font-size:13px;border-radius:10px;color:var(--paper)}.menu-link:hover{background:#ffffff0b}.footer-links{display:flex;gap:22px;letter-spacing:0}.footer-links a:hover{color:var(--lime)}.document-page{max-width:850px;margin:40px auto}.document-body{line-height:1.9;overflow-wrap:anywhere}.document-body h1{font-size:30px;letter-spacing:-.5px;margin:40px 0 18px;scroll-margin-top:25px}.document-body h2{font-size:21px;margin:28px 0 12px;scroll-margin-top:25px}.document-body p{color:var(--muted);margin:14px 0}.document-body a{color:var(--lime);text-decoration:underline;text-underline-offset:4px}.document-body ul{padding-left:24px;color:var(--muted)}.document-body code{padding:2px 5px;border-radius:5px;background:#ffffff0a;color:var(--paper)}.document-body blockquote{margin:22px 0;padding:2px 18px;border-left:2px solid var(--lime);background:#c8f49d08}.document-body img{display:block;max-width:100%;width:min(340px,100%);height:auto;border-radius:15px;margin:25px auto}.document-body hr{border:0;border-top:1px solid var(--line);margin:30px 0}.document-nav{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.document-nav a{color:var(--lime)}@media(max-width:700px){.document-page{margin:24px auto}.document-body h1{font-size:25px}.document-body h2{font-size:19px}footer{flex-wrap:wrap;gap:15px}}

.document-body ul ul{margin:8px 0 16px;padding-left:22px;border-left:1px solid var(--line);list-style-type:circle}.document-body li{margin:7px 0}.document-body>ul>li:has(ul)>a{font-weight:600;color:var(--paper)}.document-body ul ul a{font-size:14px}