/* Knowledge Center — article hub */

.knowledge-hub__toc {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  margin: 0 0 var(--space-8);
  padding: 0;
  list-style: none;
}

.knowledge-hub__toc a {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full, 999px);
  background: var(--color-bg-elevated);
  transition: border-color var(--duration-normal) var(--ease-default),
              color var(--duration-normal) var(--ease-default);
}

.knowledge-hub__toc a:hover,
.knowledge-hub__toc a:focus-visible {
  color: var(--color-text);
  border-color: var(--color-border-default);
}

body[data-page="knowledge-center"] .knowledge-preview__grid {
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  body[data-page="knowledge-center"] .knowledge-preview__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 72rem) {
  body[data-page="knowledge-center"] .knowledge-preview__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

body[data-page="knowledge-center"] .knowledge-card {
  scroll-margin-top: 6rem;
}

body[data-page="knowledge-center"] .knowledge-card:target {
  border-color: var(--color-text-accent-warm);
  box-shadow: var(--card-shadow);
}

body[data-page="knowledge-center"] .knowledge-card__excerpt {
  margin-bottom: var(--space-4);
}