:root{--bg:#fbfbfc;--fg:#1d2230;--muted:#5b6475;--accent:#2457c5;--line:#e3e6ee}
@media (prefers-color-scheme:dark){:root{--bg:#12151c;--fg:#e8eaf0;--muted:#9aa3b5;--accent:#8fb0ff;--line:#262c3a}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
main{max-width:46rem;margin:0 auto;padding:3rem 1.25rem 4rem}
h1{font-size:2rem;line-height:1.2;margin:0 0 .5rem}
h2{font-size:1.2rem;margin:2.2rem 0 .4rem}
p,li{margin:.5rem 0}
a{color:var(--accent)}
nav{display:flex;gap:1.25rem;padding-bottom:1.25rem;margin-bottom:1.75rem;border-bottom:1px solid var(--line);font-size:.95rem}
.muted{color:var(--muted);font-size:.9rem}
code{background:var(--line);padding:.1rem .35rem;border-radius:4px;font-size:.9em;word-break:break-all}