.sectionNav {
  position: -webkit-sticky;
  position: sticky;
  top: var(--header-height);
  z-index: 60;
  margin: 0 -1.5rem 1.5rem;
  background: rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}

.inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
  padding: 0.125rem 1.5rem;
}

.item {
  position: relative;
  padding: 0.5rem 0.6rem;
  border: none;
  background: transparent;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.25;
  white-space: nowrap;
  color: var(--text-muted);
  transition: color 0.15s;
}

.item:hover {
  color: var(--text);
}

.itemActive {
  color: var(--action);
}

.itemActive::after {
  content: '';
  position: absolute;
  left: 0.4rem;
  right: 0.4rem;
  bottom: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--action);
}