:root {
  --bg: #fbfbf9;
  --text: #1d1d1b;
  --muted: #62625d;
  --rule: #e2e2dc;
  --link: #2a5bd7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141413;
    --text: #ecece8;
    --muted: #a3a39c;
    --rule: #2e2e2b;
    --link: #8ab0ff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

main {
  max-width: 42rem;
  margin: 0 auto;
  padding: 3rem 1rem 4rem;
}

h1 { font-size: 1.75rem; line-height: 1.2; margin: 0 0 0.25rem; }
h2 { font-size: 1.1rem; margin: 2rem 0 0.5rem; }
p, li { margin: 0 0 0.75rem; }
ul { padding-left: 1.25rem; }
a { color: var(--link); }

.meta { color: var(--muted); margin-bottom: 2rem; }

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9rem;
}

footer a { margin-right: 1rem; }