.site-header {
  position: sticky;
  top: 0;
  z-index: 6;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 20px;
  background: #ffffff;
  border-bottom: 1px solid var(--color-border, #e5e7eb);
}

.site-brand {
  font-weight: 700;
  letter-spacing: 0.3px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text-primary, #111827);
}

.site-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.site-nav a {
  text-decoration: none;
  color: var(--color-text-secondary, #6b7280);
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--color-border, #e5e7eb);
  background: #ffffff;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.site-nav a:hover {
  background: var(--color-secondary-bg, #e5e7eb);
  color: var(--color-text-primary, #111827);
}

.site-nav a[aria-current="page"],
.site-nav a.active {
  background: var(--color-secondary-bg, #e5e7eb);
  color: var(--color-text-primary, #111827);
  font-weight: 600;
  box-shadow: inset 0 0 0 1px var(--color-border, #e5e7eb);
}

@media print {
  .site-header {
    display: none !important;
  }
}