body{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;margin:0;color:#1c2024;background:#f7f8fa}
header{padding:2rem;background:#12233d;color:#fff}main{max-width:52rem;margin:0 auto;padding:2rem}
code{background:#e8ebef;padding:.1rem .3rem;border-radius:3px}footer{padding:2rem;color:#6a737d}