:root { --bg:#fbfaf7; --fg:#1f2328; --muted:#5b636d; --line:#e3e0d8; --accent:#2f5d8a; --box:#f1eee6; }
@media (prefers-color-scheme: dark) {
  :root { --bg:#16181b; --fg:#e6e6e3; --muted:#a3a8ad; --line:#2d3136; --accent:#8db4dc; --box:#202327; }
}
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--fg);
  font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif; }
main { max-width:720px; margin:0 auto; padding:32px 16px 64px; }
nav { display:flex; flex-wrap:wrap; gap:16px; padding-bottom:16px; border-bottom:1px solid var(--line); margin-bottom:24px; }
nav a { color:var(--accent); text-decoration:none; font-weight:600; }
h1 { font-size:1.8rem; line-height:1.25; margin:0 0 8px; }
h2 { font-size:1.25rem; margin:32px 0 8px; }
p.meta { color:var(--muted); margin-top:0; }
a { color:var(--accent); }
.box { background:var(--box); border-radius:8px; padding:12px 16px; margin:16px 0; }
table { border-collapse:collapse; width:100%; font-size:0.95rem; }
th, td { text-align:left; vertical-align:top; padding:8px; border-bottom:1px solid var(--line); }
blockquote { margin:8px 0; padding:8px 16px; border-left:3px solid var(--accent); background:var(--box); }
footer { margin-top:48px; color:var(--muted); font-size:0.9rem; }