:root{color-scheme:light dark;--fg:#1a1a1a;--muted:#666;--bg:#fff;--line:#e5e5e5;--accent:#2563eb}
@media (prefers-color-scheme:dark){:root{--fg:#eaeaea;--muted:#9a9a9a;--bg:#111;--line:#2a2a2a;--accent:#60a5fa}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:48px 20px 80px}
h1{font-size:1.9rem;line-height:1.2;margin:0 0 .3em}
h2{font-size:1.2rem;margin:2em 0 .5em;padding-top:1em;border-top:1px solid var(--line)}
.meta{color:var(--muted);font-size:.9rem;margin-bottom:2em}
a{color:var(--accent)}
ul{padding-left:1.2em}
footer{margin-top:4em;color:var(--muted);font-size:.85rem}