a.menu-dropdown-button {
  display: block;
  width: 40px;
  text-align: center;
  padding: 5px;
  border: 1px solid var(--color-main);
  cursor: pointer;
}
a.menu-dropdown-button svg {
  fill: var(--color-main);
}
.meta-toc-fixed {
  display: none;
  position: fixed;
  left: 5px;
  top: 10%;
  z-index: 111;
}
.meta-toc-fixed.fixed {
  display: block;
}

.meta-toc-fixed .wrap-toc {
  display: none;
  max-height: 410px;
}
.meta-toc-fixed.fixed .toc-head .bi-caret-down-fill {
  display: none;
}
.meta-toc-fixed.fixed .toc-list {
  max-height: 350px;
  margin-top: 10px;
  padding-left: 15px;
}
.meta-toc-fixed.fixed .toc-list > li > a::before {
  left: -15px;
}

.wrap-toc {
  display: block;
  padding: 10px;
  background-color: #a81f05;
  width: 100%;
  margin-top: 2px;
  border: 2px solid var(--color-main);
  font-size: 13px;
  margin-bottom: 10px;
}
.wrap-toc .toc-head svg {
  fill: #fff;
  margin-right: 10px;
}
.wrap-toc .toc-head {
  position: relative;
  display: flex;
  align-items: center;
  font-size: 20px;
  font-weight: 600;
  color: #fff;
  line-height: 1;
  cursor: pointer;
}

.meta-toc.fixed .wrap-toc {
  width: 350px;
  display: none;
}
.toc-list {
  margin-top: 20px;
  max-height: 500px;
  overflow-y: auto;
}
.toc-list li {
  list-style: none;
}
.toc-list li a {
  display: block;
  padding: 4px 0px;
  cursor: pointer;
  color: #fff !important;
}
.toc-list li a:hover,
.toc-list li a.active {
  color: red !important;
}

.toc-list > li > a {
  position: relative;
  font-size: 16px;
  font-weight: 500;
}
.toc-list > li > a::before {
  content: "\25be";
  display: block;
  position: absolute;
  width: 20px;
  height: 20px;
  left: -20px;
  top: 3px;
}

.toc-list > li > a:only-child::before {
  content: "";
}

.toc-list ul {
  padding-left: 20px;
}
.toc-list > li > ul li a {
  font-size: 15px;
}