:root {
  --bg: #fbfaf7;
  --text: #1d1d1b;
  --muted: #5f5e58;
  --rule: #e3e1da;
  --link: #1f5fa8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --text: #ecebe6;
    --muted: #a3a29b;
    --rule: #33322f;
    --link: #8bb8ec;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
main, footer {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 16px;
}
main { padding-top: 64px; }
h1 {
  font-size: 2.2rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}
h2 {
  font-size: 1.15rem;
  margin: 40px 0 8px;
}
.lede {
  font-size: 1.15rem;
  color: var(--muted);
  margin: 0;
}
header {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 24px;
}
.note, .meta { color: var(--muted); }
ul { padding-left: 1.25em; }
li { margin: 4px 0; }
a { color: var(--link); }
footer {
  margin-top: 56px;
  padding-top: 16px;
  padding-bottom: 48px;
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--muted);
}