*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:#f6f7f9;color:#1a1a1a}a{color:#1a4d8c}main{max-width:720px;margin:0 auto;padding:1rem 1.25rem 3rem}.banner{background:#fff8e6;border:1px solid #f0d78c;border-radius:6px;padding:.6rem .85rem;font-size:.9rem;margin-bottom:1rem}