:root {
  --text: #1d1d1f;
  --muted: #6e6e73;
  --background: #ffffff;
  --tint: #0071e3;
  --line: #d2d2d7;
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --background: #000000;
    --tint: #4da3ff;
    --line: #424245;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 17px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}
main { max-width: 40rem; margin: 0 auto; padding: 48px 16px 64px; }
header { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; }
header a.home { font-weight: 600; color: var(--text); text-decoration: none; }
nav a { color: var(--muted); font-size: 15px; }
h1 { font-size: 34px; line-height: 1.15; margin: 40px 0 8px; }
h2 { font-size: 22px; margin: 36px 0 8px; }
p, li { color: var(--text); }
.lead { font-size: 20px; color: var(--muted); margin-top: 0; }
.updated { color: var(--muted); font-size: 15px; }
a { color: var(--tint); }
footer { margin-top: 56px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 15px; }
footer a { color: var(--muted); }