@media (min-width: 991px) {
  .business {
    padding: 60px 0 80px 0;
    background: #EFF0F4;
  }
  .business .business-header {
    text-align: center;
  }
  .business .business-header .en-name {
    font-size: 30px;
    font-weight: 500;
    color: var(--xr-primary, #727272);
  }
  .business .business-header .title {
    font-size: 36px;
    font-weight: 500;
    color: #000000;
    margin: 10px 0 10px 0;
  }
  .business .business-header .line {
    width: 365px;
    height: 2px;
    background: #989898;
    margin: 10px auto;
  }
  .business .business-header .line span {
    display: block;
    width: 70px;
    height: 3px;
    opacity: 0.48;
    background-color: #000;
    margin: 0 auto;
  }
  .business .business-header .sub-title {
    font-size: 18px;
    font-weight: 500;
    color: var(--xr-primary, #727272);
  }
  .business .business-list {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
        -ms-flex-wrap: wrap;
            flex-wrap: wrap;
    margin-top: 40px;
  }
  .business .business-list .list-item {
    position: relative;
    width: 25%;
  }
  .business .business-list .list-item .text {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 10px;
    background-color: rgba(0, 0, 0, 0.8);
    color: #Fff;
    -webkit-transition: all 0.5s;
            transition: all 0.5s;
  }
  .business .business-list .list-item .text:hover {
    background-color: rgba(255, 255, 255, 0.3);
  }
  .business .business-list .list-item .text .title {
    font-size: 24px;
    line-height: 40px;
  }
  .business .business-list .list-item .text .intro {
    font-size: 16px;
    line-height: 30px;
  }
  .case {
    padding: 60px 0;
  }
  .case .case-header {
    text-align: center;
  }
  .case .case-header .en-name {
    font-size: 30px;
    font-weight: 500;
    color: var(--xr-primary, #727272);
    margin: 10px 0 10px 0;
  }
  .case .case-header .title {
    font-size: 36px;
    font-weight: 500;
    color: #000000;
  }
  .case .case-header .line {
    width: 365px;
    height: 2px;
    background: #989898;
    margin: 10px auto;
  }
  .case .case-header .line span {
    display: block;
    width: 70px;
    height: 3px;
    opacity: 0.48;
    background-color: #000;
    margin: 0 auto;
  }
  .case .case-header .sub-title {
    font-size: 18px;
    font-weight: 500;
    color: var(--xr-primary, #727272);
  }
  .case .case-list {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
        -ms-flex-wrap: wrap;
            flex-wrap: wrap;
    margin-top: 50px;
  }
  .case .case-list .list-item {
    width: 25%;
    padding: 3px;
    margin-bottom: 15px;
  }
  .case .case-list .list-item .img {
    width: 100%;
    position: relative;
  }
  .case .case-list .list-item .img .mask {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    -webkit-transition: background-color 1s;
            transition: background-color 1s;
    opacity: 0.6;
    background-repeat: no-repeat;
    background-position: center;
  }
  .case .case-list .list-item .img .mask::after {
    content: "";
    display: none;
    width: 64px;
    height: 64px;
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
        -ms-transform: translate(-50%, -50%);
            transform: translate(-50%, -50%);
    
  }
  .case .case-list .list-item .img:hover .mask {
    background-color: #000;
  }
  .case .case-list .list-item .img:hover .mask::after {
    display: block;
  }
  .case .case-list .list-item .img img {
    width: 100%;
  }
  .case .case-list .list-item .text {
    text-align: center;
  }
  .case .case-list .list-item .text .title {
    font-size: 24px;
    color: #616161;
  }
  .case .case-list .list-item .text .intro {
    font-size: 18px;
    color: #898989;
  }
}
@media (max-width: 990px) {
  .business {
    padding: 60px 0 80px 0;
    background: #EFF0F4;
  }
  .business .business-header {
    text-align: center;
  }
  .business .business-header .en-name {
    font-size: 24px;
    font-weight: 500;
    color: var(--xr-primary, #727272);
  }
  .business .business-header .title {
    font-size: 30px;
    font-weight: 500;
    color: #000000;
    margin: 10px 0 10px 0;
  }
  .business .business-header .line {
    width: 95%;
    height: 2px;
    background: #989898;
    margin: 10px auto;
  }
  .business .business-header .line span {
    display: block;
    width: 70px;
    height: 3px;
    opacity: 0.48;
    background-color: #000;
    margin: 0 auto;
  }
  .business .business-header .sub-title {
    font-size: 18px;
    font-weight: 500;
    color: var(--xr-primary, #727272);
  }
  .business .business-list {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
        -ms-flex-wrap: wrap;
            flex-wrap: wrap;
    margin-top: 40px;
  }
  .business .business-list .list-item {
    position: relative;
    width: 50%;
  }
  .business .business-list .list-item img {
    width: 100%;
  }
  .business .business-list .list-item .text {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 10px;
    background-color: rgba(0, 0, 0, 0.8);
    color: #Fff;
    -webkit-transition: all 0.5s;
            transition: all 0.5s;
  }
  .business .business-list .list-item .text:hover {
    background-color: rgba(255, 255, 255, 0.3);
  }
  .business .business-list .list-item .text .title {
    font-size: 18px;
    line-height: 40px;
  }
  .business .business-list .list-item .text .intro {
    font-size: 14px;
    line-height: 30px;
  }
  .case {
    padding: 60px 0;
  }
  .case .case-header {
    text-align: center;
  }
  .case .case-header .en-name {
    font-size: 24px;
    font-weight: 500;
    color: var(--xr-primary, #727272);
    margin: 10px 0 10px 0;
  }
  .case .case-header .title {
    font-size: 30px;
    font-weight: 500;
    color: #000000;
  }
  .case .case-header .line {
    width: 95%;
    height: 2px;
    background: #989898;
    margin: 10px auto;
  }
  .case .case-header .line span {
    display: block;
    width: 70px;
    height: 3px;
    opacity: 0.48;
    background-color: #000;
    margin: 0 auto;
  }
  .case .case-header .sub-title {
    font-size: 18px;
    font-weight: 500;
    color: var(--xr-primary, #727272);
  }
  .case .case-list {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
        -ms-flex-wrap: wrap;
            flex-wrap: wrap;
    margin-top: 50px;
  }
  .case .case-list .list-item {
    width: 50%;
    padding: 3px;
    margin-bottom: 15px;
  }
  .case .case-list .list-item .img {
    width: 100%;
    position: relative;
  }
  .case .case-list .list-item .img .mask {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    opacity: 0.6;
    background-repeat: no-repeat;
    background-position: center;
  }
  .case .case-list .list-item .img:hover .mask {
    background-color: #000;
  }
  .case .case-list .list-item .img img {
    width: 100%;
  }
  .case .case-list .list-item .text {
    text-align: center;
  }
  .case .case-list .list-item .text .title {
    font-size: 18px;
    color: #616161;
  }
  .case .case-list .list-item .text .intro {
    font-size: 14px;
    color: #898989;
  }
}