:root{--bg:#f5f5f5;--surface:#fff;--text:#111827;--muted:#6b7280;--line:#e5e7eb;--indigo:#4f46e5}*,:before,:after{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif}a{color:inherit;text-decoration:none}