:root{--bg: #050505;--surface-1: #0b0b0b;--surface-2: #101010;--surface-3: #141414;--card: #0a0a0a;--border: rgba(255, 255, 255, .05);--border-strong: rgba(255, 255, 255, .1);--text: #ffffff;--text-secondary: rgba(255, 255, 255, .6);--text-muted: rgba(255, 255, 255, .35);--accent: #ffffff;--ease: cubic-bezier(.4, 0, .2, 1);--t-ui: .2s;--t-page: .4s;--sidebar-w: 64px;font-family:Inter,SF Pro Display,Geist,-apple-system,BlinkMacSystemFont,Segoe 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var(--ease)}.rb-play:hover{transform:scale(1.05)}.rb-right{width:280px;display:flex;align-items:center;justify-content:flex-end;gap:8px}.rb-progress{font-size:12px;color:var(--text-muted);font-variant-numeric:tabular-nums}.rb-btn:disabled,.rb-play:disabled{opacity:.3;cursor:default}.rb-btn:disabled:hover{color:var(--text-secondary);background:none}.rb-play:disabled:hover{transform:none}.btn-ghost.saved{color:var(--text);border-color:var(--border-strong);background:#ffffff1a}.reader{position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;background:var(--bg);display:flex;flex-direction:column;animation:fade-in var(--t-page) var(--ease)}.reader-top{display:flex;align-items:center;gap:16px;padding:16px 24px;border-bottom:1px solid 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var(--ease)}.reader-toc-item:hover{color:var(--text);background:#ffffff0a}.lang-switch{position:absolute;top:28px;right:40px;display:flex;gap:4px;background:var(--surface-1);border:1px solid var(--border);border-radius:10px;padding:4px;z-index:10}.lang-switch button{font-size:12px;font-weight:600;padding:5px 10px;border-radius:7px;color:var(--text-muted);transition:all var(--t-ui) var(--ease)}.lang-switch button.active{color:#000;background:var(--accent)}.page{padding:24px 40px 120px;display:flex;flex-direction:column;gap:40px;max-width:1500px;animation:page-in var(--t-page) var(--ease)}@keyframes 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var(--border);border-radius:12px;background:var(--surface-1);overflow:hidden}.settings-row{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 18px;border-bottom:1px solid var(--border)}.settings-row:last-child{border-bottom:0}.settings-row>span{color:var(--text-secondary);font-size:14px}.segmented,.stepper{display:inline-flex;align-items:center;gap:4px;border:1px solid var(--border);border-radius:10px;padding:4px;background:var(--surface-2)}.segmented button{height:32px;min-width:42px;border-radius:7px;color:var(--text-muted);font-size:12px;font-weight:650}.segmented button.active{color:#000;background:var(--accent)}.stepper button{width:32px;height:32px;border-radius:7px;display:grid;place-items:center;color:var(--text-secondary)}.stepper button:hover{color:var(--text);background:#ffffff0d}.stepper 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var(--ease)}.ai-refresh:hover:not(:disabled){color:var(--text);border-color:var(--border-strong);background:#ffffff0d}.ai-refresh:disabled{cursor:default;opacity:.62}.ai-controls{display:grid;gap:12px;margin-bottom:20px}.ai-control-group{display:grid;gap:8px}.ai-control-group>span{color:var(--text-muted);font-size:12px;font-weight:650;letter-spacing:.04em;text-transform:uppercase}.ai-choice-row{display:flex;flex-wrap:wrap;gap:8px}.ai-choice-row button{min-height:34px;padding:0 12px;border:1px solid var(--border);border-radius:9px;color:var(--text-secondary);background:var(--surface-1);font-size:13px;font-weight:600;transition:color var(--t-ui) var(--ease),border-color var(--t-ui) var(--ease),background var(--t-ui) var(--ease)}.ai-choice-row button:hover{color:var(--text);border-color:var(--border-strong)}.ai-choice-row button.active{color:#000;border-color:var(--accent);background:var(--accent)}.ai-recommendation-row{display:flex;gap:18px;overflow-x:auto;overflow-y:hidden;padding-bottom:8px;scroll-snap-type:x proximity}.ai-recommendation-item{width:160px;flex:0 0 160px;scroll-snap-align:start}.ai-reason{display:block;margin-top:8px;color:var(--text-muted);font-size:12px;line-height:1.35}.reader{background:radial-gradient(circle at 18% 0%,rgba(167,113,61,.14),transparent 28%),radial-gradient(circle at 86% 14%,rgba(85,116,124,.12),transparent 34%),repeating-radial-gradient(circle at 38% 42%,rgba(255,255,255,.025) 0 1px,transparent 1px 4px),linear-gradient(90deg,#080706,#15100d 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