:root {
  color-scheme: light dark;
  --bg: #fbfbfa;
  --surface: #ffffff;
  --ink: #0d0d0c;
  --muted: #58605b;
  --border: #ececea;
  --green: #0b6e4f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0c0b;
    --surface: #151917;
    --ink: #f5f5f3;
    --muted: #a8b0ab;
    --border: #262b28;
  }
}

* { box-sizing: border-box; }

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

main {
  max-width: 820px;
  margin: 0 auto;
  padding: 28px 20px 48px;
}

h1,
h2 {
  line-height: 1.18;
  letter-spacing: 0;
}

h1 {
  margin: 0 0 10px;
  font-size: 32px;
}

h2 {
  margin: 28px 0 8px;
  font-size: 20px;
}

p,
li {
  color: var(--muted);
}

ul {
  padding-left: 22px;
}

a {
  color: var(--green);
}

.updated {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 22px;
}

.notice,
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
}

.card + .card {
  margin-top: 16px;
}