.toc-sidebar {
  position: sticky;
  top: 20px;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  padding-left: 20px;
  border-left: 1px solid #eee;
}

.toc-title {
  font-size: 16px;
  font-weight: 700;
  color: #222;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid #8C1515;
}

.toc-sidebar #TableOfContents {
  padding-left: 0;
}

.toc-sidebar #TableOfContents ul {
  list-style: none;
  padding-left: 16px;
  margin-bottom: 0;
}

.toc-sidebar #TableOfContents > ul {
  padding-left: 0;
}

.toc-sidebar #TableOfContents li {
  margin-bottom: 6px;
}

.toc-sidebar #TableOfContents a {
  display: block;
  font-size: 13px;
  color: #666;
  padding: 3px 0;
  transition: color 0.2s ease;
  line-height: 1.4;
}

.toc-sidebar #TableOfContents a:hover {
  color: #8C1515;
  text-decoration: none;
}

.toc-sidebar #TableOfContents .toc-number {
  color: #999;
  font-weight: 400;
  margin-right: 2px;
}

@media (max-width: 991px) {
  .toc-sidebar {
    display: none;
  }
}