.main{
  .logo-con{
    height: 64px;
    // flex 居中：收起态只剩徽标也自动居中
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    overflow: hidden;
    white-space: nowrap;
    // 渐变徽标：与登录页主色同源，无底色块，直接落在侧栏上
    .logo-badge{
      flex: none;
      width: 36px;
      height: 36px;
      line-height: 36px;
      text-align: center;
      border-radius: 10px;
      background: linear-gradient(135deg, #4f6ef7, #7c5cf0);
      color: #fff;
      font-size: 20px;
      font-weight: 700;
      box-shadow: 0 2px 8px rgba(79, 110, 247, .3);
    }
    // 文字：深墨色，轻字重间隔，与侧栏浅底协调
    .logo-name{
      font-size: 21px;
      font-weight: 600;
      letter-spacing: .5px;
      color: #1f2d50;
    }
  }
  .header-con{
    background: #fff;
    padding: 0 20px;
    width: 100%;
  }
  .main-layout-con{
    height: 100%;
    overflow: hidden;
  }
  .main-content-con{
    height: ~"calc(100% - 60px)";
    overflow: hidden;
  }
  .tag-nav-wrapper{
    padding: 0;
    height:40px;
    background:#f5f7fa;
  }
  .content-wrapper{
    padding: 18px;
    height: ~"calc(100% - 80px)";
    overflow: auto;
    // 内容填充白色背景
    background: #fff;
  }
  .left-sider{
    // 浅灰蓝侧边栏：比内容区深半档，形成层次但不沉重
    background: #f0f3fa;
    // 分隔线用 border 而非 box-shadow：阴影会被右侧内容区（标签栏等）背景盖住
    border-right: 1px solid #e2e8f5;
    .ivu-layout-sider-children{
      overflow-y: scroll;
      margin-right: -18px;
    }
  }
}
.ivu-menu-item > i{
  margin-right: 12px !important;
}
.ivu-menu-submenu > .ivu-menu > .ivu-menu-item > i {
  margin-right: 8px !important;
}
.collased-menu-dropdown{
  width: 100%;
  margin: 0;
  line-height: normal;
  padding: 7px 0 6px 16px;
  clear: both;
  font-size: 12px !important;
  white-space: nowrap;
  list-style: none;
  cursor: pointer;
  transition: background 0.2s ease-in-out;
  &:hover{
    background: rgba(100, 100, 100, 0.1);
  }
  & * {
    color: #515a6e;
  }
  .ivu-menu-item > i{
    margin-right: 12px !important;
  }
  .ivu-menu-submenu > .ivu-menu > .ivu-menu-item > i {
    margin-right: 8px !important;
  }
}

.ivu-select-dropdown.ivu-dropdown-transfer{
  max-height: 400px;
}