:root{--primary: #1C5D9B;--primary-dark: #123F6C;--secondary: #C99A2E;--accent: #3E86C4;--bg: #FAFBFC;--surface: #FFFFFF;--on: #1C2530;--muted: #6B7784;--divider: #E3E9EF;--arabic: #16202B;--q: #1C5D9B}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--on);font-family:Segoe UI,system-ui,-apple-system,Roboto,Arial,sans-serif;-webkit-tap-highlight-color:transparent}.app{max-width:780px;margin:0 auto;padding-bottom:48px}.ar{font-family:Traditional Arabic,Amiri,Segoe UI,serif}.muted{color:var(--muted)}.center{justify-content:center}.header{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:6px;background:var(--primary);color:#fff;padding:10px 12px;box-shadow:0 2px 8px 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#00000014;transform:translateY(-1px)}.card-body{flex:1;min-width:0}.title-ar{font-weight:700;color:var(--arabic);font-size:22px}.chevron{color:var(--primary);font-size:22px}.badge{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:16px;flex-shrink:0;background:linear-gradient(135deg,var(--accent),var(--primary))}.badge.sm{width:40px;height:40px;font-size:15px}.topic-card{background:var(--surface);border:1px solid var(--divider);border-radius:14px;margin:8px 12px;overflow:hidden}.topic-main{display:flex;align-items:center;gap:12px;padding:14px;text-decoration:none;color:inherit}.topic-main .title-ar{font-size:20px}.thumbs{display:flex;gap:8px;overflow-x:auto;padding:4px 14px 12px;scrollbar-width:thin}.thumbs.center{justify-content:flex-start}.thumb{flex:0 0 auto;width:84px;cursor:pointer;border-radius:8px;overflow:hidden;border:1px solid var(--divider);background:var(--surface)}.thumb 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9px;border-radius:20px;white-space:nowrap}.kind-vocab{background:var(--accent)}.kind-dialogue{background:var(--primary)}.kind-exercise{background:var(--secondary)}.kind-grammar{background:#7a5aa8}.line{padding:12px 0;border-bottom:1px dashed var(--divider)}.line:last-child{border-bottom:none}.speaker{color:var(--secondary);font-weight:700;font-size:calc(16px * var(--ar-scale))}.line-ar{color:var(--arabic);font-weight:600;font-size:calc(23px * var(--ar-scale));line-height:1.85}.line-uz{color:var(--muted);font-size:15px;margin-top:6px}.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.chip{border:1px solid var(--divider);background:#eef4fa;color:var(--arabic);border-radius:20px;padding:4px 12px;font-size:calc(16px * var(--ar-scale));cursor:pointer}.chip:hover{background:#ddeaf6;border-color:var(--accent)}.state{text-align:center;color:var(--muted);padding:40px 20px}.state.error{color:#b23b3b}.btn{margin-top:12px;background:var(--primary);color:#fff;border:none;padding:10px 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