body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;max-width:720px;margin:3rem auto;padding:0 1.25rem;line-height:1.55;color:#1d1d1f;background:#fff}
h1{font-size:1.9rem;margin-bottom:.25rem}h2{font-size:1.2rem;margin-top:2rem}
nav a{margin-right:1rem}footer{margin-top:3rem;font-size:.9rem;color:#666}
@media (prefers-color-scheme:dark){body{background:#111;color:#e8e8e8}footer{color:#999}a{color:#8ab4f8}}