.course-detail {
  padding-top: 60px;

  aside {
    padding: 20px;
    > h2 {
      margin-bottom: 10px;
    }

    .toc {
      .level-1 {
        color: var(--color-text-4);
        padding: 30px 0 5px 0;
      }
      .level-2 {
        display: grid;
        padding-left: 10px;
        line-height: 30px;
        grid-template-columns: 9fr 1fr;
        color: var(--color-text-2);
        cursor: pointer;
        &:hover {
          color: var(--color-text-1);
        }
        &.active {
          color: rgb(var(--primary-4));
        }
        .time {
          color: var(--color-text-4);
          text-align: right;
        }
      }
    }
  }

  article {
    position: relative;
    height: 100%;
    .mask {
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      top: 0;
      z-index: 30;
      background: rgba(255, 255, 255, 1);
      display: flex;
      justify-content: center;
      align-items: center;
    }
    > main {
      height: 100%;
      .player-container {
        height: 100%;
        position: relative;
        overflow: hidden;
        &.float {
          position: fixed !important;
          left: 0;
          top: 60px;
          bottom: 0;
          height: auto !important;
          right: calc((100% - 1120px) / 2);
          z-index: 20;
        }
      }
    }
  }
}
