:root{color-scheme:light}html,body,#root{height:100%;margin:0;background:#fff;color:#111827;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}.card{border:1px solid #e5e7eb;border-radius:12px;padding:12px;background:#fff}.muted{color:#6b7280;font-size:12px}