.toc {
  background: var(--color-bg-dark);
  clip-path: var(--clip-panel);
  padding: 1.25rem var(--space-card-padding);
  margin-block: var(--space-section);
}

.toc__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  color: var(--color-heading-accent);
  font-weight: var(--fw-btn);
  font-size: var(--fs-h3);
}

.toc__arrow {
  transition: transform var(--transition-base);
}
.toc__toggle[aria-expanded="true"] .toc__arrow {
  transform: rotate(180deg);
}

.toc__list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 1rem;
}
.toc__list[hidden] { display: none; }

.toc__list a {
  display: block;
  padding: 0.4rem 0;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-cool-accent);
  transition: color var(--transition-fast);
}
.toc__list a:hover,
.toc__list a:focus-visible {
  color: var(--color-heading-accent);
}