:root { --text:#1d1d1f; --muted:#6b6b70; --link:#0a58ca; --bg:#ffffff; --rule:#e3e3e6; }
@media (prefers-color-scheme: dark) { :root { --text:#ececef; --muted:#a0a0a8; --link:#7fb0ff; --bg:#141416; --rule:#2c2c31; } }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--text); font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 40px 16px 64px; }
h1 { font-size: 1.8rem; line-height:1.2; margin: 0 0 4px; }
h2 { font-size: 1.1rem; margin: 28px 0 6px; }
a { color: var(--link); }
.meta, .lang { color: var(--muted); font-size: .9rem; }
.lang { margin-bottom: 24px; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 48px 0; }
ul, ol { padding-left: 1.3rem; }