body{font-family:-apple-system,Segoe UI,Roboto,sans-serif;max-width:720px;margin:40px auto;padding:0 20px;line-height:1.6;color:#222}
h1{color:#1a5f8a}h2{margin-top:1.6em}footer{margin-top:3em;color:#777;font-size:.9em;border-top:1px solid #eee;padding-top:1em}
@media(prefers-color-scheme:dark){body{background:#111;color:#ddd}h1{color:#5ab0e0}footer{color:#888;border-color:#333}}