@media screen and (max-width: 570px) {
  .nav-mobile {
    width: 100vw;
    height: 0.9rem;
    display: block;
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0;
    z-index: 999;
    background-color: #ffffff;
  }
  .nav {
    display: none;
  }
  .mobile-item ul {
    width: 100vw;
    position: fixed;
    top: 0.9rem;
    z-index: 88;
    background: #1979FF;
  }
  .mobile-item ul li {
    list-style: none;
    width: 100%;
    height: 0.8rem;
    text-align: center;
    line-height: 0.8rem;
    font-size: 0.3rem;
    border-bottom: 1px solid #ffffff;
  }
  .mobile-item ul li a {
    color: #ffffff;
    width: 100%;
    height: 100%;
    text-decoration: none;
  }
  .swiper {
    height: 5.8rem;
  }
  .swipe-phone {
    width: 100vw;
    height: 5.8rem !important;
  }
  .sever {
    width: 95%;
    margin-left: auto;
    margin-right: auto;
    flex-wrap: wrap;
  }
  .sever-item {
    width: 45%;
  }
  .sever-mobile {
    margin-bottom: 0.3rem;
  }
  .item-english {
    font-size: 0.25rem;
  }
  .flow {
    width: 95%;
    margin-left: auto;
    margin-right: auto;
    flex-wrap: wrap;
  }
  .advantage {
    width: 95%;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-left: auto;
    margin-right: auto;
  }
  .case {
    width: 95%;
    margin-left: auto;
    margin-right: auto;
  }
  .case-item {
    width: 45%;
    height: 2rem;
  }
  .submit-con {
    width: 95%;
    margin-left: auto;
    margin-right: auto;
  }
  .submit {
    height: auto;
  }
  .input-submit {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .input-submit input {
    margin-left: 0 !important;
    width: 90% !important;
    margin-bottom: 0.2rem;
  }
  .but {
    margin: 0;
  }
  .foot {
    margin-top: 0.3rem;
    height: auto;
  }
  .foot-top {
    width: 95%;
    justify-content: space-between;
    flex-wrap: wrap;
  }
  .foot-item {
    margin-left: 0.4rem;
    margin-right: 0.4rem;
  }
  .foot-top {
    display: none;
  }
  .foot-records {
    text-align: center;

    font-size: 0.22rem;

    color: #ffffff;
  }
}