:root{--bg:#fff;--fg:#1c1c1c;--muted:#666;--line:#e5e5e5;--link:#1a56db}
@media (prefers-color-scheme:dark){:root{--bg:#141414;--fg:#eaeaea;--muted:#9a9a9a;--line:#2a2a2a;--link:#7aa2ff}}
body{background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;margin:0}
main{max-width:760px;margin:0 auto;padding:40px 16px 80px}
h1{font-size:1.8rem;margin:0 0 .25rem}h2{font-size:1.15rem;margin:2rem 0 .5rem}
.muted{color:var(--muted);font-size:.9rem}a{color:var(--link)}
hr{border:0;border-top:1px solid var(--line);margin:3rem 0}
nav a{margin-right:1rem}ul{padding-left:1.2rem}