.course-detail {
  .table-of-content {
    position: fixed;
    top: 60px;
    bottom: 0;
    width: 300px;
    padding: 20px;
    overflow-y: auto;
    border-right: 1px solid var(--color-border-2);
    background: #fff;
    z-index: 99;

    > h3 {
      margin: 0 0 10px 0;
    }

    .toc {
      padding-top: 20px;
      .level-1 {
        color: var(--color-text-3);
        line-height: 1.5;
        padding-top: 24px;
        font-size: 13px;
        &:first-of-type {
          padding-top: 0;
        }
      }
      .level-2 {
        margin: 6px 0;
        padding: 6px 12px 6px 6px;
        line-height: 1.5;
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 14px;
        color: var(--color-text-2);
        cursor: pointer;
        &:hover {
          color: var(--color-text-1);
          background: var(--color-fill-1);
          border-radius: 6px;
        }
        &.active {
          background: var(--color-fill-2);
          border-radius: 6px;
          color: var(--color-primary-1);
          .xicon,
          .time {
            color: var(--color-primary-1);
          }
        }
        .xicon {
          color: var(--color-text-4);
          margin-right: 6px;
        }
        .time {
          color: var(--color-text-4);
          font-size: 13px;
          text-align: right;
        }
      }
    }
  }
  .content {
    position: fixed;
    right: 0;
    top: 60px;
    bottom: 0;
    overflow-y: auto;
  }
}

.toggle {
  cursor: pointer;
  display: none;
  justify-content: center;
  align-items: center;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 199;
  width: 60px;
  height: 60px;
  background: #24292f;
  color: #d7d7d7;
  transition: all 0.25s ease-in-out;
  &:hover {
    color: var(--color-primary-2);
  }
  > svg {
    height: 24px;
  }
}

@media (max-width: 1120px) {
  .toggle {
    display: inline-flex;
  }
}