.toc {
  background: var(--color-bg-dark);
  clip-path: var(--card-clip);
  margin-block-end: var(--space-section);
  z-index: var(--z-toc);
  max-width: var(--text-block-width); /* aligns with the text column, not the full page width */
}
.toc__toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.5rem;
  color: var(--color-white);
  font-weight: var(--fw-btn);
}
.toc__arrow { transition: transform var(--transition-fast); color: var(--color-heading-accent); }
.toc[data-collapsed="true"] .toc__arrow { transform: rotate(180deg); }
.toc__list {
  display: grid;
  gap: 0.15rem;
  padding: 0 1.5rem 1.25rem;
}
.toc[data-collapsed="true"] .toc__list { display: none; }
.toc__link {
  display: block;
  padding: 0.5rem 0.25rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-cool-accent);
}
.toc__link:hover { color: var(--color-heading-accent); }