:root{--font-sans: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";--font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--radius: 12px;--radius-sm: 8px;--radius-lg: 16px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-6: 24px;--space-8: 32px;--container: min(1400px, 90vw);--bg: #0f172a;--bg-elev: #111827;--surface: #1f2937;--surface-1: #161f2f;--text: #e5e7eb;--muted: #9ca3af;--primary: #6366f1;--primary-600: #5457e0;--ring: rgba(99, 102, 241, .35);--border: rgba(148, 163, 184, .2);--border-subtle: rgba(148, 163, 184, .3);--shadow: 0 10px 30px rgba(0, 0, 0, .35);--diff-added: rgba(34, 197, 94, .18);--diff-removed: rgba(239, 68, 68, .2);--diff-neutral: rgba(110, 118, 129, .12);--diff-added-gutter: rgba(34, 197, 94, .35);--diff-removed-gutter: rgba(239, 68, 68, 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