:root{--bg: #ffffff;--bg-soft: #f6f8fb;--surface: #ffffff;--surface-2: #f1f5f9;--text: #0f172a;--text-2: #475569;--text-muted: #94a3b8;--border: #e7ebf1;--border-strong: #d6dde8;--brand: #4f46e5;--brand-600: #4338ca;--brand-700: #3730a3;--brand-soft: #eef2ff;--accent: #0ea5e9;--grad: linear-gradient(135deg, #6366f1 0%, #0ea5e9 100%);--success: #059669;--success-soft: #ecfdf5;--ring: rgba(79, 70, 229, .32);--shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .05);--shadow-md: 0 6px 18px -6px rgba(15, 23, 42, .12);--shadow-lg: 0 24px 50px -20px rgba(79, 70, 229, .35);--radius-sm: 10px;--radius: 16px;--radius-lg: 24px;--maxw: 1120px;--prose: 720px;--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif}:root[data-theme=dark]{--bg: #0b1020;--bg-soft: #0e1426;--surface: #131c30;--surface-2: #0f1828;--text: #e8edf6;--text-2: #aab4c5;--text-muted: #6b7689;--border: #232c44;--border-strong: #2e3a57;--brand: 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