.toc {
  background: var(--color-card);
  border-radius: var(--radius-card);
  padding: 0.5rem;
  margin-top: var(--space-section);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(79, 106, 104, 0.3);
}

.toc__toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.toc__arrow {
  width: 22px;
  height: 22px;
  color: var(--color-heading);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.toc__toggle[aria-expanded="false"] .toc__arrow {
  transform: rotate(-90deg);
}

.toc__list {
  display: grid;
  gap: 0.15rem;
  padding: 0.25rem 0.5rem 0.75rem;
  overflow: hidden;
}

.toc__list[hidden] {
  display: none;
}

.toc__list li {
  border-bottom: 1px solid rgba(79, 106, 104, 0.18);
}

.toc__list li:last-child {
  border-bottom: none;
}

.toc__link {
  display: block;
  padding: 0.7rem 0.75rem;
  color: var(--color-text);
  font-size: 0.95rem;
  transition: color var(--transition), padding var(--transition);
}

.toc__link:hover,
.toc__link:focus-visible {
  color: var(--color-heading);
  padding-left: 1.1rem;
}

@media (prefers-reduced-motion: reduce) {
  .toc__arrow,
  .toc__link {
    transition: none;
  }
}