:root{color-scheme:dark;font-family:Inter,Segoe UI,Arial,sans-serif;background:#101218;color:#edeef7;font-size:15px}*{box-sizing:border-box}body{margin:0}aside{width:240px;position:fixed;inset:0 auto 0 0;padding:38px 24px;border-right:1px solid #272b37;background:#14171f;display:flex;flex-direction:column}.brand{font-size:23px;font-weight:750;color:#eee;text-decoration:none}.brand span{color:#a3a9ff}.eyebrow{font-size:11px;letter-spacing:2px;color:#939aa9;margin:28px 0 18px}nav{display:grid;gap:5px}nav button{text-align:left;background:none;border:0;color:#aeb4c6}nav button.active{background:#282c47;color:#c5c8ff}.local{margin-top:auto;color:#aeb4c6;font-size:12px}.local p{color:#7e869c;line-height:1.6}main{margin-left:240px;padding:32px 48px;max-width:1600px}header,.row{display:flex;align-items:center;justify-content:space-between;gap:16px}header{color:#8e97aa;font-size:12px;margin-bottom:36px}.badge{background:#202435;border:1px solid #30364b;padding:8px 12px;border-radius:20px;font-size:10px;letter-spacing:1px}h1{font-size:36px;letter-spacing:-1.3px;margin:12px 0}h2{font-size:21px;margin:0 0 12px}h3{font-size:16px;margin:0 0 12px}p{color:#a5aec2;line-height:1.65}button,input,select,textarea{font:inherit;border:1px solid #353c50;border-radius:9px;padding:11px 14px;background:#1c212e;color:#edf0fc}button{cursor:pointer}button:hover{border-color:#a1a7f5}button:disabled{opacity:.45;cursor:default}.primary{background:#929aff;color:#111526;border-color:#929aff;font-weight:650}.danger{background:#693245}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(245px,1fr));gap:16px;margin:24px 0}.card{background:#181c27;border:1px solid #2b3142;border-radius:15px;padding:23px;margin-bottom:16px}.card strong.big{display:block;font-size:32px;margin:12px 0}.muted,small{color:#929db2;font-size:12px;line-height:1.6}.bar{background:#2d3345;border-radius:20px;height:6px;margin:12px 0;overflow:hidden}.bar i{display:block;background:#939cff;height:100%}.actions{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}.tag{display:inline-block;border:1px solid #39405a;border-radius:6px;font-size:11px;padding:4px 7px;margin:3px;color:#c1c7da}.good{color:#8ae0b4}.bad{color:#f1a6ab}a{color:#b3baff;overflow-wrap:anywhere}label{display:grid;gap:7px;margin:14px 0}textarea{width:100%;min-height:140px;resize:vertical}input,select{max-width:100%}.timer{display:flex;flex-wrap:wrap;gap:18px;align-items:center;border-color:#5a619d}.clock{font-variant-numeric:tabular-nums;font-size:32px;color:#c0c6ff}.topic{border-left:3px solid #838cec}.resource{padding:13px 0;border-bottom:1px solid #2c3141}.resource a{font-weight:600}.question{font-size:18px;color:#e0e4ef;line-height:1.7}.feedback{padding:16px;border:1px solid #50587a;border-radius:9px;background:#22283b;margin:14px 0}.filters{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0}table{width:100%;border-collapse:collapse;font-size:13px}td,th{padding:12px;text-align:left;border-bottom:1px solid #313748}.scroll{overflow:auto}svg{width:100%;height:190px}dialog{background:#1b2030;color:#eee;border:1px solid #5c6590;border-radius:16px;width:min(580px,92vw);max-height:90vh;overflow:auto;padding:28px}dialog::backdrop{background:#000a}footer{color:#6d7790;font-size:11px;padding:28px 0}#notice:not(:empty){padding:15px;background:#303452;border-radius:9px;margin-bottom:15px}details{margin:12px 0}summary{cursor:pointer;padding:10px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid #c7cdff;outline-offset:3px}.sequence{display:flex;gap:7px;flex-wrap:wrap}.sequence span{padding:8px;border-radius:6px;background:#252b3d}.sequence .current{background:#767fd3;color:#fff}@media(max-width:850px){aside{position:static;width:auto;padding:20px}nav{display:flex;overflow:auto;margin-top:10px}nav button{white-space:nowrap}.local,.eyebrow{display:none}main{margin:0;padding:24px 18px}h1{font-size:29px}header{margin-bottom:20px}.grid{grid-template-columns:1fr}.row{flex-wrap:wrap}}
.paper-frame{width:100%;height:560px;border:1px solid #535d78;border-radius:10px;margin-top:12px}@media(max-width:600px){.paper-frame{height:440px}}
.resolution li,#view .card>ol li{margin:12px 0;line-height:1.6}.resolution{border-top:1px solid #535d78;padding-top:12px;margin-top:12px}
.drive-study{border-color:#777ef5}.drive-study select{width:100%;min-width:0}.drive-screen{overflow:hidden;border:1px solid #535d78;border-radius:10px;background:#10131c;margin-top:16px}.drive-screen.video{aspect-ratio:16/9}.drive-screen.document{height:560px}.drive-screen iframe{width:100%;height:100%;border:0;display:block}.drive-screen>p,.drive-screen>button{margin:20px}.drive-study input{max-width:100%}.drive-study h3,.drive-study p{overflow-wrap:anywhere}@media(max-width:600px){.drive-screen.document{height:440px}.drive-study .actions{gap:8px}.drive-study .actions button{white-space:normal}}
@media(max-width:850px){#view label{min-width:0;max-width:100%}#view select{width:100%;min-width:0}.filters{min-width:0}}
.lesson-heading{display:flex;align-items:baseline;justify-content:space-between;gap:12px}.lesson-heading h2{margin:0}.clean-lesson .lesson-pdf{margin-top:26px;padding-top:24px;border-top:1px solid #353c50}.lesson-meta{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:12px}.lesson-meta a{font-size:14px}.lesson-position{margin:0}.lesson-position summary{font-size:14px;padding:4px 0}.lesson-position label{margin-bottom:0}.lesson-position input{width:210px}.clean-lesson .drive-screen.document{height:480px}.clean-lesson>details:last-child{margin-bottom:0}.clean-lesson>details:last-child summary{font-size:14px}#view .card.topic>details{margin-top:16px}@media(max-width:600px){.clean-lesson .drive-screen.document{height:380px}.lesson-meta{align-items:flex-start}.lesson-navigation button{flex:1 1 auto}.clean-lesson .lesson-position input{width:100%}}