.page-top .site-header {
  border-bottom: 2px solid #243447;
}

.page-top .site-brand {
  color: #243447;
}

.page-index {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-index-item {
  margin: 0;
}

.page-index-link {
  display: block;
  padding: 1rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.page-index-link:hover {
  border-color: #243447;
  box-shadow: 0 2px 10px rgba(36, 52, 71, 0.08);
}

.page-index-title {
  display: block;
  font-weight: 700;
  font-size: 1.05rem;
  color: #243447;
}

.page-index-desc {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.95rem;
}