:root{color-scheme:light dark;--bg:#fff;--fg:#1c1c1e;--mute:#6b6b70;--link:#0a5cd6}
@media (prefers-color-scheme:dark){:root{--bg:#000;--fg:#f2f2f7;--mute:#a1a1a6;--link:#6cb0ff}}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.55 -apple-system,BlinkMacSystemFont,"Helvetica Neue",sans-serif}
main{max-width:40rem;margin:0 auto;padding:1.5rem 1.25rem 3rem}
h1{font-size:1.75rem;line-height:1.2;margin:0 0 .25rem}
h2{font-size:1.2rem;margin:2rem 0 .4rem}
p,li{margin:.5rem 0}
ul{padding-left:1.25rem}
a{color:var(--link)}
.meta{color:var(--mute);font-size:.9rem}