:root {
  --accent: #0b5fff;
  --border: #e5e7eb;
  --ink: #111827;
  --muted: #6b7280;
  --surface: #f8fafc;
}

body {
  color: var(--ink);
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  padding: 16px 0;
  font-weight: 600;
}

.site-nav a {
  color: inherit;
  text-decoration: none;
}

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

.brand {
  font-size: 18px;
  letter-spacing: 0.2px;
  margin-right: 16px;
}

.page-content .wrapper {
  padding-top: 28px;
  padding-bottom: 48px;
}

.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  background: #fff;
}

.card h3 {
  margin-top: 0;
}

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

.site-footer {
  border-top: 1px solid var(--border);
  background: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  padding: 24px 0;
}

.footer-right {
  text-align: right;
}

@media (max-width: 640px) {
  .footer-right {
    text-align: left;
  }
}