@font-face{font-family:"CMU Serif";font-style:roman;font-weight:500;src:url(/lecturetex/assets/cmu-serif-500-roman-eT-JDYhI.woff2) format("woff2"),url(/lecturetex/assets/cmu-serif-500-roman-DzIVZ5Ds.ttf) format("truetype")}@font-face{font-family:"CMU Serif";font-style:italic;font-weight:500;src:url(/lecturetex/assets/cmu-serif-500-italic-Ea3rjVFP.woff2) format("woff2"),url(/lecturetex/assets/cmu-serif-500-italic-DmklLiNq.ttf) format("truetype")}@font-face{font-family:"CMU Serif";font-style:roman;font-weight:700;src:url(/lecturetex/assets/cmu-serif-700-roman-CFvVWXrf.woff2) format("woff2"),url(/lecturetex/assets/cmu-serif-700-roman-BjpK3YEj.ttf) format("truetype")}@font-face{font-family:"CMU Serif";font-style:italic;font-weight:700;src:url(/lecturetex/assets/cmu-serif-700-italic-CxA60R0R.woff2) format("woff2"),url(/lecturetex/assets/cmu-serif-700-italic-ysTsm4l3.ttf) format("truetype")}:root{--color-brand: #111111;--color-brand-light: #2a2a2a;--color-brand-dark: #000000;--radius-sm: 0px;--radius-md: 0px;--radius-lg: 0px;--radius-xl: 0px;--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--bg-hover: #e2e8f0;--border: #e2e8f0;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--shadow: 0 1px 3px rgba(0,0,0,.08);--shadow-lg: 0 10px 25px rgba(0,0,0,.1)}@media (prefers-color-scheme: dark){:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--bg-hover: #475569;--border: #334155;--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-muted: #64748b;--shadow: 0 1px 3px rgba(0,0,0,.3);--shadow-lg: 0 10px 25px rgba(0,0,0,.3)}}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100%;font-family:"CMU Serif",serif;font-weight:500;background:var(--bg-primary);color:var(--text-primary);font-size:14px;line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;text-shadow:0 1px 0 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var(--border);background:var(--bg-secondary);color:var(--text-primary);font-size:14px;font-weight:600;cursor:pointer;transition:all .15s}.btn-secondary:hover{border-color:var(--text-primary);color:var(--text-primary)}.btn-ghost{padding:11px 20px;border-radius:var(--radius-md);border:none;background:none;color:var(--text-muted);font-size:14px;font-weight:500;cursor:pointer;transition:color .15s}.btn-ghost:hover{color:var(--text-primary)}.btn-new{padding:10px 24px;border-radius:var(--radius-md);border:1.5px solid var(--color-brand);background:none;color:var(--color-brand);font-size:14px;font-weight:700;cursor:pointer;transition:all .15s}.btn-new:hover{background:var(--color-brand);color:#fff}