#wpp-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: #0073e6;
  width: 0%;
  z-index: 9999;
}
.wpp-toc {
  border: 1px solid #ddd;
  background: #f9f9f9;
  padding: 12px;
  margin: 20px 0;
  border-radius: 8px;
}
.wpp-toc-header {
  font-weight: bold;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.wpp-toc-menu {
  cursor: pointer;
  font-size: 18px;
}
.wpp-toc-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}
.wpp-toc-item {
  margin: 4px 0;
}
.wpp-toc-item a {
  text-decoration: none;
  color: #0073e6;
}
.wpp-toc-item a:hover {
  text-decoration: underline;
}