#toc-container {
    position: relative;
    margin-bottom: 1em;
  }
  
  #toc-container ul {
    list-style: none;
    padding-left: 0;
  }
  
  #toc-container li {
    margin-left: 1em;
  }
  
  .toc-level-1 a { font-weight: bold; }
  .toc-level-2 a { font-weight: normal; }
  .toc-level-3 a { font-weight: lighter; }
  /* 根据需要继续为更深层级的标题设置样式 */