:root{--bg:#fff;--text:#111827;--muted:#6b7280;--border:#e5e7eb;--card:#f9fafb}html,body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji}