/* 目录样式 */
.index-ul {
  list-style: none;
  padding-left: 0;
  min-width: 200px; /* 增加最小宽度 */
}

.index-ul li {
  margin: 8px 0;
  transition: all 0.3s ease;
  line-height: 1.5;
}

.index-ul li a {
  display: flex;
  align-items: center;
  width: 100%;
  color: #666;
  text-decoration: none;
  transition: all 0.3s ease;
}

/* 不同层级的缩进和样式 */
.toc-level-1 { padding-left: 0 !important; }
.toc-level-2 { padding-left: 20px !important; }
.toc-level-3 { padding-left: 40px !important; }
.toc-level-4 { padding-left: 60px !important; }
.toc-level-5 { padding-left: 80px !important; }
.toc-level-6 { padding-left: 100px !important; }

/* 圆点样式 */
.index-ul li i {
  font-size: 12px;
  margin-right: 5px;
  color: #ccc;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
}

/* 当前项高亮样式 */
.index-ul li.active i {
  color: #007bff; /* 蓝色高亮 */
}

.index-ul li.active a {
  color: #007bff; /* 文字也变成蓝色 */
  font-weight: 500;
}