body{font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;max-width:42rem;margin:3rem auto;padding:0 1.25rem;color:#171717}
h1{font-size:1.8rem;margin-bottom:.25rem}h2{font-size:1.15rem;margin-top:2rem}
a{color:#2a78d6}footer{margin-top:3rem;font-size:.85rem;color:#666}
@media(prefers-color-scheme:dark){body{background:#0a0a0a;color:#ededed}a{color:#3987e5}footer{color:#aaa}}