:root {
  color-scheme: light dark;
  --text: #1c1c1e;
  --muted: #5c5c60;
  --bg: #ffffff;
  --link: #0a58ca;
  --rule: #d8d8dc;
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #f2f2f7;
    --muted: #a1a1a6;
    --bg: #111113;
    --link: #6ea8fe;
    --rule: #3a3a3c;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 42rem; margin: 0 auto; padding: 2.5rem 1.25rem 4rem; }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 .25rem; }
h2 { font-size: 1.2rem; margin: 2.25rem 0 .5rem; padding-top: 1rem; border-top: 1px solid var(--rule); }
p, li { margin: .4rem 0; }
ul { padding-left: 1.25rem; }
a { color: var(--link); }
.meta { color: var(--muted); margin-bottom: 1.5rem; }
footer { margin-top: 3rem; color: var(--muted); font-size: .9rem; }