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h1{letter-spacing:-.03em;font-size:clamp(1.7rem,3vw,2.4rem);line-height:1.12}.live-detail-card>p{color:var(--muted);line-height:1.6}.back-button{border:1px solid var(--line);background:var(--surface-raised);width:fit-content;color:var(--muted);border-radius:999px;align-items:center;gap:8px;padding:8px 16px 8px 12px;font-size:.88rem;font-weight:700;text-decoration:none;transition:color .18s,border-color .18s;display:inline-flex}.back-button:hover{border-color:var(--line-strong);color:var(--text)}.video-frame{aspect-ratio:16/9;border-radius:var(--radius);background:#000;position:relative;overflow:hidden;box-shadow:0 30px 70px -30px #000c}.video-frame iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.html-summary{color:var(--muted);line-height:1.7}.html-summary :is(h1,h2,h3,h4){color:var(--text);margin:1.2em 0 .5em}.encyclopedia-card{border:1px solid var(--line);border-radius:calc(var(--radius) + 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12px;font-size:.88rem;text-decoration:none;display:inline-flex}.lemma-detail-appbar strong{color:var(--accent);letter-spacing:.08em;text-transform:uppercase;font-size:.8rem}.lemma-detail-grid{grid-template-columns:minmax(0,1fr) 300px;gap:34px;padding:clamp(20px,3.4vw,40px);display:grid}.lemma-detail-main{align-content:start;gap:14px;min-width:0;padding:clamp(20px,3.4vw,40px);display:grid}.lemma-detail-grid .lemma-detail-main{padding:0}.lemma-path{color:var(--accent);letter-spacing:.1em;text-transform:uppercase;font-size:.78rem;font-weight:800}.lemma-detail-main h1{letter-spacing:-.035em;font-size:clamp(1.8rem,3.4vw,2.7rem);line-height:1.1}.lemma-detail-main>p{color:var(--muted);font-size:1.06rem;line-height:1.6}.lemma-content{gap:30px;margin-top:10px;display:grid}.lemma-content-block{color:var(--muted);gap:12px;scroll-margin-top:90px;line-height:1.75;display:grid}.lemma-content-block h2{color:var(--text);letter-spacing:-.02em;font-size:1.4rem}.lemma-content-block 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img,.login-card img{object-fit:contain;width:100%;height:auto;box-shadow:0 0 0 1px var(--line-strong), 0 14px 34px -14px #ff7a0073;background:#15110d;border-radius:14px;padding:12px 14px}.login-card img{border-radius:18px;width:min(320px,100%);padding:16px 18px}.avatar{background:var(--gradient);width:34px;height:34px;color:var(--accent-ink);border-radius:50%;place-items:center;font-size:.8rem;font-weight:800;display:grid}.home-section{gap:14px;display:grid}.home-section>h2{color:var(--faint);letter-spacing:.14em;text-transform:uppercase;font-size:.72rem;font-weight:800}.stat-grid{grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;display:grid}.stat{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);gap:6px;padding:18px 20px;display:grid}.stat span{color:var(--muted);letter-spacing:.07em;text-transform:uppercase;font-size:.74rem;font-weight:700}.stat strong{letter-spacing:-.03em;overflow-wrap:anywhere;font-size:1.7rem;font-weight:800}.stat small{color:var(--faint)}.stat.good strong{color:var(--success)}.stat.bad strong{color:var(--danger)}.block{gap:14px;display:grid}.block-head{justify-content:space-between;align-items:center;gap:12px;display:flex}.block-head h2{letter-spacing:-.015em;font-size:1.15rem}.table-wrap{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);overflow-x:auto}.table{border-collapse:collapse;width:100%;font-size:.92rem}.table th{border-bottom:1px solid var(--line);color:var(--faint);letter-spacing:.1em;text-align:left;text-transform:uppercase;white-space:nowrap;padding:13px 16px;font-size:.7rem;font-weight:800}.table td{border-bottom:1px solid var(--line);vertical-align:middle;padding:13px 16px}.table tr:last-child td{border-bottom:0}.table tbody tr:hover{background:var(--surface-raised)}.table .right{text-align:right}.sub{color:var(--faint);margin-top:2px;font-size:.8rem;display:block}.user-line{align-items:center;gap:8px;padding:2px 0;display:flex}.link{color:var(--accent);align-items:center;gap:6px;font-weight:650;text-decoration:none;display:inline-flex}.badge{background:var(--surface-hover);color:var(--muted);white-space:nowrap;border-radius:999px;align-items:center;padding:3px 10px;font-size:.76rem;font-weight:750;display:inline-flex}.badge.good{background:color-mix(in srgb, var(--success) 18%, transparent);color:var(--success)}.badge.bad{background:color-mix(in srgb, var(--danger) 18%, transparent);color:var(--danger)}.badge.warn{background:var(--accent-soft);color:var(--accent)}.btn{background:var(--gradient);min-height:40px;color:var(--accent-ink);border:0;border-radius:999px;align-items:center;gap:8px;padding:0 16px;font-size:.88rem;font-weight:800;transition:transform .16s,filter .16s;display:inline-flex;box-shadow:0 10px 24px -12px #ff6e00b3}.btn:hover:not(:disabled){filter:brightness(1.08);transform:translateY(-1px)}.btn:disabled{opacity:.55;cursor:wait}.btn.ghost{border:1px solid var(--line);background:var(--surface-raised);min-height:34px;color:var(--text);box-shadow:none;padding:0 12px}.btn.ghost:hover:not(:disabled){border-color:var(--line-strong)}.btn.ghost.danger{border-color:var(--danger);color:var(--danger)}.row-actions{gap:8px;display:inline-flex}.inline-form{border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--accent-soft);flex-wrap:wrap;align-items:center;gap:10px;padding:16px;display:flex}.inline-form input,.editor{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-solid);min-width:0;color:var(--text);outline:0;padding:0 14px}.inline-form input{flex:160px;height:42px}.inline-form input:focus,.editor:focus{border-color:var(--line-strong);box-shadow:0 0 0 4px var(--accent-soft)}.error{color:var(--danger)}.bars{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);align-items:flex-end;gap:4px;height:140px;padding:18px 16px 8px;display:flex}.table .bars{background:0 0;border:0;height:54px;padding:0}.bar{flex-direction:column;flex:1;justify-content:flex-end;align-items:center;gap:4px;min-width:0;height:100%;display:flex}.bar i{background:var(--gradient);border-radius:6px 6px 2px 2px;width:100%;max-width:22px;display:block}.bar b{color:var(--muted);font-size:.66rem;font-weight:700}.bar span{color:var(--faint);font-size:.64rem}.table .bar b,.table .bar span{display:none}.goals{gap:16px;display:grid}.goal{gap:8px;display:grid}.goal-head{color:var(--muted);justify-content:space-between;gap:12px;display:flex}.goal-head strong{color:var(--text)}.progress{background:var(--surface-hover);border-radius:999px;height:10px;overflow:hidden}.progress i{border-radius:inherit;background:var(--gradient);height:100%;display:block}.timeline{gap:20px;margin:0;padding:0 0 0 28px;list-style:none;display:grid;position:relative}.timeline:before{content:"";background:linear-gradient(var(--accent), transparent);width:2px;position:absolute;top:8px;bottom:8px;left:7px}.timeline>li{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);gap:8px;padding:20px;display:grid;position:relative}.timeline>li:before{content:"";background:var(--accent);width:12px;height:12px;box-shadow:0 0 0 4px var(--accent-soft);border-radius:50%;position:absolute;top:24px;left:-27px}.timeline time{color:var(--accent);letter-spacing:.08em;font-size:.78rem;font-weight:800}.timeline h2{letter-spacing:-.01em;font-size:1.08rem}.timeline ul{color:var(--muted);gap:6px;margin:0;padding-left:18px;display:grid}.split{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:20px;display:grid}.editor{resize:vertical;min-height:340px;padding:14px;font-family:JetBrains Mono,ui-monospace,Consolas,monospace;font-size:.86rem;line-height:1.6}.email-preview{border:1px solid var(--line);border-radius:var(--radius);background:#fff;width:100%;min-height:380px}.live-tabs button{min-height:40px;color:var(--muted);background:0 0;border:0;border-radius:999px;align-items:center;gap:8px;padding:0 18px;font-weight:700;display:inline-flex}.live-tabs button.active{background:var(--gradient);color:var(--accent-ink)}@media (width<=860px){.split{grid-template-columns:1fr}.brand img{width:150px;padding:6px 8px}}.page-header{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px;display:flex}.course-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px;display:grid}.course-card{border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(180deg, var(--accent-soft), transparent 45%), var(--surface);box-shadow:var(--shadow);align-content:start;gap:12px;padding:24px;text-decoration:none;transition:transform .22s,border-color .22s,box-shadow .22s;display:grid}.course-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-hover);transform:translateY(-4px)}.course-card h2{letter-spacing:-.02em;font-size:1.4rem}.course-card p{color:var(--muted);line-height:1.5}.module-list{gap:12px;display:grid}.module{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}.module summary{cursor:pointer;align-items:center;gap:16px;padding:16px 20px;list-style:none;display:flex}.module summary::-webkit-details-marker{display:none}.module-number{background:var(--gradient);width:40px;height:40px;color:var(--accent-ink);border-radius:12px;flex:none;place-items:center;font-weight:800;display:grid}.module-title{flex:1;gap:2px;min-width:0;display:grid}.module-title small{color:var(--muted)}.module-body{border-top:1px solid var(--line);gap:18px;padding:4px 20px 20px;display:grid}.chapter h3{color:var(--accent);margin:16px 0 8px;font-size:.95rem}.chapter ul,.lesson-side ul,.file-list{gap:2px;margin:0;padding:0;list-style:none;display:grid}.chapter li a,.lesson-side li a{border-radius:var(--radius-sm);color:var(--text);align-items:center;gap:10px;padding:9px 12px;font-weight:600;text-decoration:none;transition:background .16s;display:flex}.chapter li a:hover,.lesson-side li a:hover{background:var(--surface-hover)}.chapter li a small,.lesson-side li a small{color:var(--faint);white-space:nowrap;margin-left:auto}.chapter li a svg,.lesson-side li a svg{color:var(--accent);flex:none}.lesson-side li a.active{background:var(--accent-soft);color:var(--accent)}.empty{color:var(--faint)}.lesson{grid-template-columns:minmax(0,1fr) 320px;align-items:start;gap:24px;display:grid}.lesson-main{gap:20px;min-width:0;display:grid}.lesson-main h1{letter-spacing:-.03em;font-size:clamp(1.7rem,3vw,2.4rem);line-height:1.12}.lede{color:var(--muted);font-size:1.05rem;line-height:1.6}.lesson-side{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);gap:12px;padding:18px;display:grid;position:sticky;top:84px}.lesson-side h2{font-size:1rem}.lesson-nav{justify-content:space-between;gap:12px;display:flex}.file-list li{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);align-items:center;gap:10px;padding:10px 14px;display:flex}.file-list li span{overflow-wrap:anywhere;flex:1;min-width:0;font-weight:600}.file-list li svg{color:var(--accent);flex:none}.code-view{border:1px solid var(--line);border-radius:var(--radius-sm);margin:0;overflow:hidden}.code-view figcaption{background:var(--accent-soft);padding:10px 16px;font-size:.85rem;font-weight:700}.code-view pre{color:#f1e6d6;background:#100d0a;max-height:480px;margin:0;padding:16px 18px;font-family:JetBrains Mono,ui-monospace,Consolas,monospace;font-size:.84rem;line-height:1.6;overflow:auto}@media (width<=1000px){.lesson{grid-template-columns:1fr}.lesson-side{position:static}}