:root{--blue: #2563eb;--purple: #7c3aed;--green: #059669;--orange: #d97706;--red: #dc2626;--cyan: #0891b2;--bg: #f8fafc;--surface: #ffffff;--border: #e5e7eb;--text: #1a1a2e;--text-muted: #6b7280;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-400: #9ca3af;--gray-500: #6b7280;--gray-900: #111827;--shadow-sm: 0 1px 3px rgba(0,0,0,.08);--shadow-md: 0 4px 16px rgba(0,0,0,.1);--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px}[data-theme=dark]{--bg: #0f1117;--surface: #1a1d26;--border: #2d3148;--text: #f1f5f9;--text-muted: #94a3b8;--gray-50: #1a1d26;--gray-100: #22263a;--gray-400: #64748b;--gray-500: #94a3b8;--gray-900: #f1f5f9}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:DM Sans,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;transition:background .2s,color .2s}.header{position:sticky;top:0;z-index:100;background:var(--surface);border-bottom:1px solid var(--border);padding:12px 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