:root {
  --ink: #1a202c;
  --muted: #4a5568;
  --accent: #2b6cb0;
  --bg: #f7fafc;
  --card: #ffffff;
  --rule: #e2e8f0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

header.site {
  background: var(--card);
  border-bottom: 1px solid var(--rule);
}

header.site .wrap,
main .wrap,
footer.site .wrap {
  max-width: 52rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

nav.site {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  padding: 0.875rem 0;
}

nav.site .brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
  text-decoration: none;
}

nav.site a {
  color: var(--accent);
  text-decoration: none;
}

nav.site a:hover { text-decoration: underline; }
nav.site .spacer { flex: 1; }

main .wrap { padding-top: 2rem; padding-bottom: 3rem; }

h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 0.75rem; }
h2 { font-size: 1.3rem; margin: 2rem 0 0.5rem; }
h3 { font-size: 1.05rem; margin: 1.5rem 0 0.25rem; }

.lede { font-size: 1.1rem; color: var(--muted); max-width: 42rem; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 0.5rem;
  padding: 1rem;
}

.card h3 { margin-top: 0; }

a.button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.55rem 1.1rem;
  border-radius: 0.375rem;
  text-decoration: none;
  font-weight: 600;
}

a.button:hover { background: #245a94; }

.meta {
  color: var(--muted);
  font-size: 0.9rem;
}

footer.site {
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.875rem;
  padding: 1.25rem 0 2rem;
}

footer.site a { color: var(--accent); }

code {
  background: #edf2f7;
  padding: 0.1em 0.3em;
  border-radius: 0.25rem;
  font-size: 0.9em;
}

blockquote {
  margin: 1rem 0;
  padding: 0.5rem 1rem;
  border-left: 3px solid var(--rule);
  color: var(--muted);
}