/* TOC principal */
.article-toc {
  margin: 1.5em 0;
  padding: 1em;
  background: #f8f9fb;
  border-radius: 12px;
  border: 1px solid #e3e6ee;
}

/* Résumé / titre déroulant */
.article-toc summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  list-style: none;
  display: block;
}

.article-toc summary::-webkit-details-marker {
  display: none;
}

.article-toc summary::after {
  content: "▼";
  float: right;
  transition: transform 0.3s ease;
}

.article-toc[open] summary::after {
  transform: rotate(180deg);
}

/* Liste principale */
.article-toc ul {
  margin-top: 0.8em;
  padding-left: 1em;
}

/* Éléments H2 */
.article-toc li {
  margin-bottom: 0.4em;
}

/* Liens */
.article-toc a {
  text-decoration: none;
  color: #2a2a2a;
}

.article-toc a:hover {
  text-decoration: underline;
}

/* ===== STYLES H3 (sous-niveaux) ===== */
.article-toc ul ul {
  margin-top: 0.3em;
  margin-left: 1em;
  font-size: 0.85em;
  opacity: 0.9;
}