:root {
  color-scheme: light dark;
  --ink: #111;
  --muted: #555;
  --bg: #fff;
  --line: #e5e5e5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f2f2f2;
    --muted: #a0a0a0;
    --bg: #0a0a0b;
    --line: #2a2a2a;
  }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 4px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
p, li { color: var(--ink); }
.meta { color: var(--muted); font-size: 14px; margin-bottom: 32px; }
a { color: inherit; }
ul { padding-left: 20px; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }