.toc {
  margin: 1.5rem 0 2rem;
  padding: 1.25rem 1.5rem;
  background: #f8fafc;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
}

.toc__toggle {
  font-size: 0.875rem;
  font-weight: 700;
  color: #334155;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toc__toggle::before {
  content: '\25B6';
  font-size: 0.5625rem;
  transition: transform 0.2s ease;
  color: var(--brand-primary);
}

.toc__details[open] .toc__toggle::before {
  transform: rotate(90deg);
}

.toc__toggle::-webkit-details-marker {
  display: none;
}

.toc__list {
  margin: 0.75rem 0 0;
  padding: 0 0 0 1.25rem;
  counter-reset: toc;
}

.toc__item {
  margin-bottom: 0.375rem;
  list-style: none;
  counter-increment: toc;
}

.toc__item::marker {
  content: counter(toc) ". ";
  color: #94a3b8;
  font-size: 0.8125rem;
}

.toc__link {
  font-size: 0.875rem;
  line-height: 1.5;
  color: #64748b;
  text-decoration: none;
  transition: color .15s;
}

.toc__link:hover {
  color: var(--brand-primary);
}

@media (max-width: 768px) {
  .toc__details:not([open]) .toc__list {
    display: none;
  }
}