/* 左侧 TOC（大屏浮现） */
.left-toc-container {
  top: 100px;
  left: 1px;
  bottom: 110px;
  overflow-y: auto;
  max-height: -webkit-fill-available;
  position: fixed;
  scrollbar-width: none;
  display: none;
}
.left-toc-container::-webkit-scrollbar { width: 10px; display: none; }
.left-toc-container::-webkit-scrollbar-thumb { background: white; border-radius: 5px; }
.left-toc-container::-webkit-scrollbar-track { background: transparent; }

.tocify ul, .tocify li {
  list-style: none;
  margin: 0;
  padding: 0;
  border: none;
  line-height: 30px;
}
.tocify-header { text-indent: 10px; }
.tocify-subheader { text-indent: 20px; display: none; border-left-width: 1px !important; }
.tocify-subheader li { font-size: 12px; }
.tocify-subheader .tocify-subheader { text-indent: 30px; }
.tocify-subheader .tocify-subheader .tocify-subheader { text-indent: 40px; }

.tocify a {
  color: #999;
  font-size: 13px;
  font-weight: 400;
  border-left: 4px solid transparent;
  padding: 4px 20px;
  display: block;
}
.tocify a:hover,
.tocify a.active {
  color: #4f7ddf;
  border-left-color: #4f7ddf;
  background: transparent;
}
.tocify .active > a { font-weight: 700; }
.tocify .active > ul.nav { display: block; }

@media screen and (min-width: 1500px) {
  .left-toc-container { display: block; }
}