:root {
  --padding: 20px;
  --card-width: 320px;
  --card-height: 110px;
  --card-height-expand: 300px;
  --slidebar-width: 400px;
}

.tree_okr {
  width: 100%;
  height: calc(100vh - 156px);
  overflow: auto;
  position: relative;
}

  .tree_okr > .tree {
    overflow: hidden;
    padding: 20px;
  }

    .tree_okr > .tree > .tree_card:first-of-type.is_active ~ .horizontal_dash {
      top: calc(var(--card-height-expand) + var(--padding) + 20px);
    }

    .tree_okr > .tree > .horizontal_dash {
      top: calc(var(--card-height) + 2 * var(--padding));
      width: calc(100% - var(--card-width) - 2 * var(--padding));
      left: calc(var(--card-width) / 2 + var(--padding));
    }

.tree_okr_slidebar {
  width: var(--slidebar-width);
  height: calc(100vh - 57px);
  position: fixed;
  right: 0;
  bottom: 0;
  background-color: white;
  z-index: 98;
  box-shadow: 0px 4px 16px rgba(0, 0, 0, 0.14);
  transition: all 300ms ease;
}

  .tree_okr_slidebar .sliderbar_body {
    overflow-y: auto;
    height: calc(100% - 56px);
  }

.tree {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: fit-content;
  height: fit-content;
  position: relative;
}

  .tree .horizontal_dash {
    content: "";
    display: block;
    position: absolute;
    top: calc(var(--card-height) + var(--padding));
    transform: translateY(-50%);
    width: calc(100% - var(--card-width));
    left: calc(var(--card-width) / 2);
    border: none;
    border-bottom: 1px dashed rgba(0, 0, 0, 0.4);
  }

.tree_card {
  flex-direction: column;
  background-color: white;
  box-shadow: 0px 3px 7px rgba(0, 0, 0, 0.2);
  position: relative;
  border-radius: 4px;
  width: var(--card-width);
  height: var(--card-height);
}

  .tree_card.is_active {
    display: flex;
    padding-bottom: 20px;
    height: var(--card-height-expand);
  }

    .tree_card.is_active ~ .horizontal_dash {
      top: calc(var(--card-height-expand) + var(--padding));
    }

  .tree_card > ul {
    flex: 1 1 0%;
    overflow-y: auto;
  }

    .tree_card > ul::-webkit-scrollbar {
      width: 0px;
    }

  .tree_card ul li {
    margin-bottom: 10px;
  }

    .tree_card ul li:last-of-type {
      margin-bottom: 0;
    }

    .tree_card ul li ul {
      padding-left: 5px;
    }

      .tree_card ul li ul li {
        margin-bottom: 5px;
      }

  .tree_card::before,
  .tree_card::after {
    content: "";
    display: none;
    position: absolute;
    height: 8px;
    background-color: #FAFAFA;
    z-index: 9;
    width: 100000%;
  }

  .tree_card.is_first::before {
    display: block;
    top: -24px;
    left: auto;
    right: calc(50% + 1px);
  }

  .tree_card.is_last::after {
    display: block;
    top: -24px;
    right: auto;
    left: calc(50% + 1px);
  }

  .tree_card hr {
    background-color: #ecf0ff;
  }

  .tree_card.has_child .dash_line.child {
    display: block;
  }

  .tree_card.has_parent .dash_line.parent {
    display: block;
  }

  .tree_card .dash_line {
    position: absolute;
    border: none;
    border-left: 1px dashed rgba(0, 0, 0, 0.4);
    background-color: white;
    height: 20px;
    width: 1px;
  }

    .tree_card .dash_line.parent,
    .tree_card .dash_line.child {
      left: 50%;
      transform: translateX(-50%);
      display: none;
    }

    .tree_card .dash_line.parent {
      bottom: 100%;
    }

      .tree_card .dash_line.parent .icon {
        position: absolute;
        border-radius: 50%;
        width: 16px;
        height: 16px;
        background-color: #6b8fe0;
        color: white;
        bottom: -8px;
        left: calc(50% - 1px);
        transform: translateX(-50%);
      }

        .tree_card .dash_line.parent .icon span {
          font-size: 10px;
          font-weight: 600;
        }

    .tree_card .dash_line.child {
      top: 100%;
    }

.tree_card_list {
  gap: 20px;
  margin-top: 0px;
  padding: 10px;
  padding-top: 40px;
  overflow-x: hidden;
}