:root{--bg: #001a33;--surface: #0d2847;--surface2: #1a3d5c;--border: #2a5a7f;--text: #e0e0e0;--text-dim: #999;--accent: #4da6ff;--accent-hover: #66b3ff;--accent-text: #000;--sidebar-bg: #0a1f35;--preview-bg: #0d1117;--preview-text: #c9d1d9;--preview-code-bg: #161b22;--preview-border: #30363d;--preview-heading-border: #21262d}.light-mode{--bg: #ffffff;--surface: #f5f5f5;--surface2: #efefef;--border: #d0d0d0;--text: #1a1a1a;--text-dim: #666;--accent: #2563eb;--accent-hover: #3b82f6;--accent-text: #fff;--sidebar-bg: #fafafa;--preview-bg: #ffffff;--preview-text: #1a1a1a;--preview-code-bg: #f6f8fa;--preview-border: #e1e4e8;--preview-heading-border: #e1e4e8}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%;width:100%}body{font-family:-apple-system,BlinkMacSystemFont,SF Pro,Segoe 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