:root { --fg: #1d1f24; --muted: #5b6070; --bg: #fbfaf7; --line: #e3e0d8; --link: #1f5fbf; }
@media (prefers-color-scheme: dark) {
  :root { --fg: #e9e7e2; --muted: #a3a7b3; --bg: #16181d; --line: #2c2f37; --link: #8ab4f8; }
}
* { 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: 42rem; margin: 0 auto; padding: 3rem 1rem 4rem; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 .5rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 .4rem; }
p, li { color: var(--fg); }
.lede { color: var(--muted); font-size: 1.05rem; }
a { color: var(--link); }
ul { padding-left: 1.2rem; }
footer { border-top: 1px solid var(--line); margin-top: 3rem; padding-top: 1rem; color: var(--muted); font-size: .9rem; }
footer a { margin-right: 1rem; }