Preview:
.document-toc-link.document-toc-link:not(.button)[aria-current]:not([aria-current=""]):not([aria-current=false]) {
  background-color: var(--background-toc-active);
  border-left: 2px solid var(--category-color);
  color: var(--text-primary);
  font-weight: 600;
}
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