:root { --ink:#16161a; --muted:#6b6b73; --line:#e5e5e8; --bg:#fbfbf9; }
* { box-sizing:border-box; }
body { margin:0; padding:48px 20px 96px; background:var(--bg); color:var(--ink);
  font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif; }
main { max-width:720px; margin:0 auto; }
h1 { font-size:28px; font-weight:600; line-height:1.25; margin:0 0 8px; }
h2 { font-size:18px; font-weight:600; margin:36px 0 10px; }
.meta { color:var(--muted); font-size:14px; margin:0 0 32px; padding-bottom:24px;
  border-bottom:1px solid var(--line); }
ul { padding-left:22px; } li { margin:6px 0; }
a { color:var(--ink); }
footer { margin-top:48px; padding-top:24px; border-top:1px solid var(--line);
  color:var(--muted); font-size:14px; }
@media (prefers-color-scheme: dark) {
  :root { --ink:#ececed; --muted:#9a9aa2; --line:#2a2a2e; --bg:#131316; }
}