body{font-family:system-ui,sans-serif;max-width:42rem;margin:2rem auto;padding:0 1rem;line-height:1.55;color:#222;background:#fff}
@media (prefers-color-scheme:dark){body{color:#ddd;background:#141414}a{color:#8ab4f8}}
h1{font-size:1.6rem}h2{font-size:1.15rem;margin-top:1.8rem}footer{margin-top:3rem;font-size:.9rem;opacity:.75}