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var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.login__brand{font-size:22px;margin-bottom:20px}.login__lead{color:var(--ink-2);font-size:14px}.login__actions{display:flex;justify-content:space-between;margin-top:14px;font-size:14px}.bar{position:relative;height:8px;border-radius:999px;overflow:hidden;background-color:var(--surface-2);background-image:repeating-linear-gradient(90deg,var(--line-strong) 0 8px,transparent 8px 16px);background-size:100% 2px;background-repeat:no-repeat;background-position:0 3px}.bar__fill{position:absolute;top:0;bottom:0;left:0;background-color:var(--accent);background-image:repeating-linear-gradient(90deg,color-mix(in srgb,var(--on-accent) 45%,transparent) 0 8px,transparent 8px 16px);background-size:100% 2px;background-repeat:no-repeat;background-position:0 3px;animation:road-in .4s ease-out;transition:width .4s ease-out}.bar--slim{height:6px;background-position:0 2px;background-image:repeating-linear-gradient(90deg,var(--line-strong) 0 6px,transparent 6px 12px)}.bar--slim .bar__fill{background-position:0 2px;background-image:repeating-linear-gradient(90deg,color-mix(in srgb,var(--on-accent) 45%,transparent) 0 6px,transparent 6px 12px)}@keyframes road-in{0%{width:0}}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:var(--gap)}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;color:inherit;text-decoration:none;display:flex;flex-direction:column}a.card:hover{border-color:var(--line-strong)}.card__body{padding:18px 20px;display:flex;flex-direction:column;gap:12px;flex:1}.card h2{font-size:18px;margin:0}a.card .card__body>p.muted{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px}.card img{width:100%;aspect-ratio:16 / 9;object-fit:cover}.notice{padding:16px 20px;background:var(--accent-soft);border-radius:var(--radius)}.notice h2{font-size:16px;margin-bottom:4px;color:var(--accent-ink)}.notice--warn{background:var(--warn-soft)}.notice--warn h2{color:var(--warn)}.notice--continue{display:flex;flex-wrap:wrap;align-items:center;gap:16px 24px;max-width:720px;margin-bottom:36px}.notice--continue p{margin:0}.tree{display:flex;flex-direction:column;gap:14px;max-width:780px}.module{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.module__head{display:flex;align-items:center;gap:12px;padding:14px 18px;background:var(--surface-2);border-bottom:1px solid var(--line)}.module__title{font-weight:500}.module__head .muted{font-size:14px}.module__count{margin-left:auto;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;color:var(--ink-3)}.lesson-row{display:flex;align-items:center;gap:12px;padding:11px 18px;border-top:1px solid var(--line);color:inherit;text-decoration:none}.lesson-row:first-of-type{border-top:none}.lesson-row:hover:not(.lesson-row--shut){background:var(--surface-2)}.lesson-row--shut{color:var(--ink-3);cursor:not-allowed}.lesson-row--now{color:var(--accent-ink);font-weight:500}.lesson-row__mark{width:20px;display:inline-flex;justify-content:center;color:var(--ok);font-size:16px}.lesson-row--now .lesson-row__mark{color:var(--accent)}.lesson-row--shut .lesson-row__mark{color:var(--ink-3)}.lesson-row__title{flex:1;min-width:0}.lesson-row .bar{width:96px;flex:none}.lesson-row__pct{width:44px;text-align:right;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;color:var(--ink-3)}.lesson{max-width:860px}.lesson--loading{min-height:60vh}.lesson__head{margin-bottom:20px}.lesson__head h1{margin-top:6px}.lesson__section{color:var(--ink-3);font-size:14px;margin:0}.lesson__nav{display:flex;justify-content:space-between;gap:12px;margin-top:32px}.lesson__hint{margin-top:12px;font-size:14px;color:var(--ink-3)}.block{margin-bottom:26px}.block__caption,.block--image figcaption{margin-top:10px;font-size:14px;color:var(--ink-2)}.block--video{margin-bottom:30px}.block--text h2{font-size:18px;margin-top:8px}.block--text ul{padding-left:22px;margin:0 0 1em;max-width:var(--measure)}.block--text li{margin-bottom:4px}.block--image{margin-left:0;margin-right:0}.block--iframe iframe,.block--image img{width:100%;border:0;border-radius:var(--radius)}.block--materials ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.block--materials li{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-control)}.block--materials a{text-decoration:none}.block--materials a:hover{text-decoration:underline}.block--audio audio{width:100%}.player{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.player video{width:100%;display:block;aspect-ratio:16 / 9;background:var(--player)}.player--error{display:grid;place-items:center;aspect-ratio:16 / 9;background:var(--player);color:var(--player-ink);font-size:16px}.player__rail{position:relative;height:4px;overflow:hidden;background-color:var(--surface-2);background-image:repeating-linear-gradient(90deg,var(--line-strong) 0 6px,transparent 6px 12px);background-size:100% 2px;background-repeat:no-repeat;background-position:0 1px}.player__rail-fill{position:absolute;top:0;bottom:0;left:0;background-color:var(--accent);background-image:repeating-linear-gradient(90deg,color-mix(in srgb,var(--on-accent) 45%,transparent) 0 6px,transparent 6px 12px);background-size:100% 2px;background-repeat:no-repeat;background-position:0 1px;animation:road-in .4s ease-out;transition:width .4s ease-out}.rating{display:flex;align-items:center;gap:10px;padding:16px 0;border-top:1px solid var(--line);font-size:16px;color:var(--ink-2)}.empty{max-width:460px;margin:12vh auto;text-align:center}.splash{display:grid;place-items:center;height:100%}.splash__pulse{width:34px;height:34px;border-radius:50%;border:3px solid var(--line-strong);border-top-color:var(--accent);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}table.board{width:100%;max-width:640px;border-collapse:separate;border-spacing:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}table.board th,table.board td{padding:11px 16px;text-align:left;border-bottom:1px solid var(--line)}table.board tr:last-child td{border-bottom:none}table.board th{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-3);background:var(--surface-2);font-weight:500}table.board td:first-child{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--ink-3)}table.board td.num,table.board th.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;text-align:right}table.board tr.self td{background:var(--accent-soft);color:var(--accent-ink);font-weight:500}.facts{display:grid;grid-template-columns:minmax(0,max-content) minmax(0,1fr);gap:6px 20px;margin:0 0 14px}.facts dd{margin:0}.homework{padding:20px 22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:26px}.homework h2{font-size:18px;margin-bottom:8px}.homework__brief{color:var(--ink-2);white-space:pre-line}.homework textarea{padding:11px 13px;border:1px solid var(--line-strong);border-radius:var(--radius-control);background:var(--surface);color:var(--ink);font:inherit;resize:vertical;width:100%}.homework textarea:focus{outline:none;border-color:var(--accent)}.homework__files{margin-bottom:16px}.homework__files ul{list-style:none;padding:0;margin:12px 0 0;display:flex;flex-direction:column;gap:6px}.homework__files li{display:flex;align-items:center;gap:10px;padding:8px 12px;background:var(--surface-2);border-radius:var(--radius-control);font-size:14px}.homework__files li>span:first-child{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.homework__files li.is-bad{color:var(--crit)}.homework__history{list-style:none;padding:0;margin:0 0 20px;display:flex;flex-direction:column;gap:10px}.verdict{padding:12px 16px;background:var(--surface-2);border-radius:var(--radius)}.verdict--ok{background:var(--ok-soft)}.verdict--bad{background:var(--crit-soft)}.verdict--wait{background:var(--warn-soft)}.verdict__head{display:flex;align-items:baseline;gap:10px;font-size:14px;margin-bottom:6px}.verdict__grade{font-family:var(--font-num);font-variant-numeric:tabular-nums}.verdict__body{margin:0 0 6px;white-space:pre-line;font-size:14px}.verdict__files{list-style:none;padding:0;margin:0 0 6px;font-size:14px}.verdict__files a{text-decoration:none}.verdict__files a:hover{text-decoration:underline}.verdict__comment{margin:0;font-size:14px}@media(prefers-reduced-motion:reduce){.bar__fill,.player__rail-fill{animation:none;transition:none}.splash__pulse{animation:none}}