:root {
  color-scheme: light dark;
  --bg: #fbfaf6;
  --ink: #1d1c19;
  --muted: #5f5c55;
  --rule: #d9d5cb;
  --link: #2a5a9c;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171614;
    --ink: #ece9e1;
    --muted: #a8a49a;
    --rule: #3a3833;
    --link: #8db4ea;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 3rem 1.25rem 4rem;
}
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 0.25rem; }
h2 { font-size: 1.25rem; margin: 2rem 0 0.5rem; }
p, li { margin: 0 0 0.75rem; }
ul { padding-left: 1.25rem; }
a { color: var(--link); }
.subtitle { color: var(--muted); margin-bottom: 2rem; }
.meta { color: var(--muted); font-size: 0.9rem; }
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; }