:root {
  color-scheme: light dark;
  --bg: #f8fafc;
  --fg: #172033;
  --muted: #5f6b7a;
  --card: #ffffff;
  --border: #d8dee8;
  --accent: #2563eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10131a;
    --fg: #edf2f7;
    --muted: #a5afbd;
    --card: #171b24;
    --border: #2c3442;
    --accent: #7aa2ff;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 40px 20px 64px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px;
}

h1, h2, h3 {
  line-height: 1.25;
}

h1 {
  margin: 0;
  font-size: 2rem;
}

.brand-line {
  margin: 0.2rem 0 1rem;
  color: var(--muted);
  font-size: 1.05rem;
}

h2 {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 1.35rem;
}

.language-block:first-of-type h2 {
  margin-top: 1.5rem;
}

h3 {
  margin-top: 1.5rem;
  font-size: 1.05rem;
}

.muted {
  color: var(--muted);
}

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

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
}

ul {
  padding-left: 1.25rem;
}

hr {
  margin: 48px 0;
  border: 0;
  border-top: 1px solid var(--border);
}