:root{--bg: #f6f3ee;--surface: #ffffff;--ink: #1f1d1a;--muted: #6f6a62;--line: #e6e0d6;--accent: #2f5d50;--accent-ink: #ffffff;--accent-soft: #e3ece8;--gold: #b8862f;--danger: #a33a2c;--radius: 14px;color-scheme:light}@media(prefers-color-scheme:dark){:root{--bg: #151514;--surface: #1f1f1d;--ink: #eeeae3;--muted: #a39d93;--line: #34322e;--accent: #7fb8a5;--accent-ink: #10201b;--accent-soft: #23332e;--gold: #d9aa55;--danger: #e07a6b;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0}body{background:var(--bg);color:var(--ink);font-family:Assistant,Heebo,system-ui,-apple-system,Segoe UI,Arial,sans-serif;font-size:16px;line-height:1.45;-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit}.app{max-width:720px;margin:0 auto;min-height:100vh}.page{padding:12px 16px 48px;display:flex;flex-direction:column;gap:12px}.center{min-height:60vh;display:grid;place-items:center;padding:24px;text-align:center}.spinner{width:28px;height:28px;border:3px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:8px;padding:calc(8px + env(safe-area-inset-top)) 8px 8px;background:color-mix(in srgb,var(--bg) 92%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.topbar h1{flex:1;margin:0;font-size:18px;font-weight:700;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.icon-btn,.icon-spacer{width:40px;height:40px;flex:none}.icon-btn{display:grid;place-items:center;border:0;background:none;border-radius:10px;cursor:pointer}.icon-btn:active{background:var(--line)}.icon-btn svg{width:22px;height:22px;stroke:var(--ink);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}.meta{color:var(--muted);font-size:13px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}.eyebrow{color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.02em}.bar{height:6px;border-radius:3px;background:var(--line);overflow:hidden;margin-top:6px}.bar>div{height:100%;background:var(--accent);border-radius:3px;transition:width .3s}.continue{display:flex;flex-direction:column;gap:4px;border-color:var(--accent);background:var(--accent-soft);position:relative}.continue-name{font-size:17px;font-weight:700}.play-pill{align-self:flex-start;margin-top:8px;background:var(--accent);color:var(--accent-ink);padding:6px 14px;border-radius:999px;font-weight:700;font-size:14px}.summary{display:flex;align-items:center;gap:16px}.summary>div:last-child{flex:1}.big{font-size:34px;font-weight:800;color:var(--accent);min-width:72px;text-align:center;line-height:1}.big small{font-size:16px;font-weight:700}.summary-line{font-size:15px}.search{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font:inherit}.search:focus{outline:2px solid var(--accent);outline-offset:-1px}.topics,.lessons{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.topic{display:flex;gap:12px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px}.topic:active{background:var(--accent-soft)}.topic-num{width:34px;height:34px;flex:none;display:grid;place-items:center;border-radius:10px;background:var(--accent-soft);color:var(--accent);font-weight:800;font-size:14px}.topic-body{flex:1;min-width:0;display:flex;flex-direction:column}.topic-name{font-weight:700;display:flex;align-items:center;gap:6px;flex-wrap:wrap}.badge{background:var(--gold);color:#fff;font-size:11px;font-weight:700;padding:1px 7px;border-radius:999px}.lessons{gap:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.lesson{display:flex;align-items:center;gap:4px;border-bottom:1px solid var(--line)}.lesson:last-child{border-bottom:0}.lesson-main{flex:1;min-width:0;display:flex;flex-direction:column;padding:11px 12px 11px 0}.lesson-main:active{background:var(--accent-soft)}.lesson-name{font-size:15px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}.lesson.done .lesson-name{color:var(--muted)}.where{color:var(--accent);font-weight:600}.empty{padding:16px;color:var(--muted);text-align:center}.st-btn{border:0;background:none;padding:10px 12px 10px 6px;cursor:pointer;display:grid;place-items:center}.st{width:24px;height:24px}.st-new circle{fill:none;stroke:var(--line);stroke-width:2}.st-started circle{fill:none;stroke:var(--accent);stroke-width:2}.st-started path{fill:var(--accent)}.st-done circle{fill:var(--accent)}.st-done path{stroke:var(--accent-ink);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}.kind{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linejoin:round}.group{display:flex;flex-direction:column;gap:8px}.group-head{display:flex;align-items:center;gap:10px;border:0;background:none;padding:6px 2px;cursor:pointer;text-align:start}.group-name{flex:1;font-weight:700;font-size:16px}.chev{display:inline-block;transition:transform .2s;font-size:20px;color:var(--muted);transform:rotate(0);width:14px}.chev.open{transform:rotate(-90deg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:11px 16px;border-radius:12px;border:1px solid var(--line);background:var(--surface);font-weight:600;cursor:pointer;text-align:center}.btn:active{transform:scale(.98)}.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.btn.danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn.wide{width:100%}.btn.primary.wide{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}.link-btn{border:0;background:none;color:var(--muted);text-decoration:underline;cursor:pointer;font-size:14px}.danger-zone{display:flex;gap:8px;align-items:center;justify-content:center;flex-wrap:wrap;margin-top:16px}.banner{background:#fbeee9;color:#7a2a1e;border:1px solid #f0cfc6;border-radius:12px;padding:10px 14px;font-size:14px;margin:8px 16px 0}.banner a{text-decoration:underline}.player .media{margin:0 -16px}.lesson-title{margin:4px 0 0;font-size:20px}.done-tag{color:var(--accent);font-weight:700}.nav-row{display:flex;justify-content:space-between;gap:8px}.nav-row .btn{flex:1}.up-next{justify-content:center}.login{min-height:100vh;justify-content:center;max-width:420px;margin:0 auto;text-align:center}.login-title{font-size:30px;margin:0;color:var(--accent)}.login form{display:flex;flex-direction:column;gap:10px}.or{color:var(--muted);font-size:13px}.settings{display:flex;flex-direction:column;gap:8px;align-items:flex-start}.email{font-weight:700}.admin-link{border-color:var(--accent)}.names .name-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}.name-orig{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}.name-row{display:flex;gap:8px;align-items:center}.name-row .search{flex:1;min-width:0;padding:10px 12px}.btn.small{padding:9px 10px;font-size:13px;white-space:nowrap}.save-bar{position:sticky;bottom:0;display:flex;gap:12px;align-items:center;justify-content:flex-end;padding:12px 0 calc(12px + env(safe-area-inset-bottom));background:var(--bg);border-top:1px solid var(--line)}.btn:disabled{opacity:.5;cursor:default}.login-form{display:flex;flex-direction:column;gap:8px;text-align:start}.login-form label{font-size:14px;font-weight:600;margin-top:4px}.login .card{display:flex;flex-direction:column;gap:10px;text-align:start}.vp{position:relative;background:#000;color:#fff;aspect-ratio:16 / 9;max-height:70vh;width:100%;overflow:hidden;user-select:none;-webkit-user-select:none;touch-action:manipulation}.vp.audio{aspect-ratio:auto;height:220px;background:linear-gradient(160deg,#23443b,#11221d)}.vp video{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:contain;background:#000}.vp.audio video{opacity:0}.vp-audio-art{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center}.vp-audio-art svg{width:64px;height:64px;fill:none;stroke:#ffffff8c;stroke-width:1.6}.vp.fs{max-height:none;height:100%;aspect-ratio:auto}.vp-ctrl{transition:opacity .25s}.vp.hide .vp-ctrl{opacity:0;pointer-events:none}.vp.hide{cursor:none}.vp:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(to top,rgba(0,0,0,.65),transparent 35%,transparent 70%,rgba(0,0,0,.45));pointer-events:none;transition:opacity .25s}.vp.hide:after{opacity:0}.vp-center,.vp-bottom,.vp-top,.vp-flash,.vp-buffering{z-index:2}.vp-center{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;gap:36px;pointer-events:none;direction:ltr}.vp-center>*{pointer-events:auto}.vp-icon{border:0;background:none;color:#fff;cursor:pointer;display:grid;place-items:center;padding:0}.vp-icon svg{width:26px;height:26px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.vp-play{width:68px;height:68px;border-radius:50%;background:#00000073}.vp-play svg{width:32px;height:32px;fill:#fff;stroke:none}.vp-skip{position:relative;width:52px;height:52px;border-radius:50%;background:#0000004d}.vp-skip{flex-direction:column;gap:0}.vp-skip svg{width:22px;height:22px}.vp-skip span{font-size:10px;font-weight:700;line-height:1;margin-top:1px}.vp-bottom{position:absolute;left:0;right:0;bottom:0;display:flex;align-items:center;gap:10px;padding:8px 12px calc(10px + env(safe-area-inset-bottom));font-variant-numeric:tabular-nums}.vp-time{font-size:12px;min-width:38px;text-align:center}.vp-seek{position:relative;flex:1;height:28px;display:flex;align-items:center}.vp-rail{position:absolute;left:0;right:0;height:4px;border-radius:2px;background:#ffffff40;overflow:hidden}.vp-buf{position:absolute;inset:0 auto 0 0;background:#ffffff59}.vp-fill{position:absolute;inset:0 auto 0 0;background:#6fd0b0}.vp-seek input{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;margin:0;opacity:0;cursor:pointer}.vp-seek:hover .vp-rail,.vp-seek:active .vp-rail{height:6px}.vp-chip{border:1px solid rgba(255,255,255,.5);background:#0000004d;color:#fff;border-radius:999px;padding:3px 9px;font-size:12px;font-weight:700;cursor:pointer}.vp-speed-wrap{position:relative}.vp-menu{position:absolute;bottom:34px;right:-6px;background:#141414f2;border-radius:10px;padding:4px;display:flex;flex-direction:column;min-width:70px}.vp-menu button{border:0;background:none;color:#fff;padding:8px 12px;font-size:14px;text-align:center;border-radius:6px;cursor:pointer}.vp-menu button.on{background:#2f5d50;font-weight:700}.vp-fsbtn svg{width:22px;height:22px}.vp-top{position:absolute;top:0;left:0;right:0;display:flex;align-items:center;gap:8px;padding:calc(10px + env(safe-area-inset-top)) 12px 10px;direction:rtl}.vp-title{font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.vp-top .vp-icon{width:40px;height:40px}.vp-top .vp-icon svg{transform:scaleX(-1)}.vp-flash{position:absolute;top:50%;transform:translateY(-50%);background:#00000080;border-radius:999px;padding:10px 16px;font-weight:700;font-size:15px;pointer-events:none}.vp-flash.fwd{right:12%}.vp-flash.back{left:12%}.vp-buffering{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;pointer-events:none}.vp-spinner{width:30px;height:30px;border:3px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite;display:block}@media(prefers-reduced-motion:reduce){.vp-ctrl,.vp:after{transition:none}}