.mobile-bg {
  display: none; }

.index-banner {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  width: 100%;
  height: 760px;
  position: relative;
  margin-bottom: 70px;
  overflow: hidden; }
  .index-banner .mobile-bg {
    display: none; }
  .index-banner .normal-bg {
    display: block; }
  .index-banner .banner-bg {
    position: absolute;
    width: auto;
    height: 100%;
    z-index: -1;
    -o-object-fit: cover;
       object-fit: cover; }
  .index-banner .banner-content {
    text-align: center; }
  .index-banner .banner-title {
    font-weight: 600;
    color: #fff;
    font-size: 60px;
    margin-bottom: 20px; }
  .index-banner .banner-des {
    font-weight: 400;
    color: #fff;
    font-size: 24px; }

.service-container .service-item {
  padding: 25px 0px; }
  .service-container .service-item .service-item-left .item-title {
    font-size: 20px;
    font-weight: normal; }
  .service-container .service-item .service-item-left .item-subtitle {
    margin-top: 12px;
    font-size: 40px;
    line-height: 40px; }
  .service-container .service-item .service-item-left .item-desc {
    font-size: 14px;
    line-height: 32px; }
  .service-container .service-item .service-item-right .picture {
    height: 398px; }
.service-container .service-item:nth-child(2n) {
  -webkit-box-orient: horizontal;
  -webkit-box-direction: reverse;
  -webkit-flex-direction: row-reverse;
      -ms-flex-direction: row-reverse;
          flex-direction: row-reverse; }
  .service-container .service-item:nth-child(2n) .service-item-left {
    margin-left: 100px;
    margin-right: 0; }
.service-container .service-item:nth-child(2n + 1) .service-item-left {
  margin-right: 120px;
  margin-left: 0; }