@media screen and (max-width: 1500px) {
    .main {
      max-width: 1200px;
    }
  }
  @media screen and (max-width: 1200px) {
    .main {
      max-width: 1100px;
    }
  }
  @media screen and (max-width: 1024px) {
    body,
    input,
    button,
    input,
    select,
    textarea {
      font-size: 15.5px;
      font-family: "PingFangSC-Regular,", "PingFangSC-Light", "PingFangSC-Medium", "PingFangSC-Semibold", sans-serif;
    }
    .main {
      max-width: none;
      margin: 0 10px;
    }
   
    .footer .link .select dd ul li {
      width: 25%;
    }
  }
  @media screen and (max-width: 779px) {
    .header .top {
      padding: 9.5px 0;
    }
    .header .top .fl {
      font-size: 0px;
      vertical-align: middle;
    }
    .header .top .fl a {
      display: none;
    }
    .header .top .fl a:hover {
      text-decoration: underline;
    }
    .header .top .fl a.bmxz {
      padding-left: 0;
      display: inline-block;
    }
    .header .top .fr {
      font-size: 0px;
      vertical-align: middle;
    }
    .header .top .fr a:nth-of-type(1),
    .header .top .fr a:nth-of-type(2),
    .header .top .fr a:nth-of-type(3),
    .header .top .fr a:nth-of-type(4) {
      display: none !important;
    }
    .header .top .fr a:hover {
      text-decoration: underline;
    }
    .header .index-menu {
      background: #fafafa;
    }
    .header .index-menu .main .bmxz-bd:nth-last-of-type(1) {
      padding-bottom: 13px;
    }
    .header .index-menu .main .bmxz-bd li {
      width: 50%;
    }
    .header .logo {
      width: 80%;
      margin: 0 auto;
      float: none;
      padding: 18px 0 0 0;
    }
    .header .search {
      width: 80%;
      margin: 0 auto;
      float: none;
      padding: 15px 0 30px 0;
    }
    .header .search .box {
      background: rgba(225, 235, 242, .8);
    }
    .footer {
      padding: 10px 0;
    }
    .footer .link {
      padding-bottom: 13px;
    }
    .footer .link .main {
      background: none;
    }
    .footer .link .select {
      width: 50%;
    }
    .footer .link .select dd {
      bottom: 70px;
    }
    .footer .link .select dd ul li {
      width: 50%;
    }
    .footer .link .select:nth-child(even) {
      background: none;
    }
    .footer .link .select:nth-of-type(3) dd,
    .footer .link .select:nth-of-type(4) dd {
      top: 60px;
      bottom: auto;
    }
    .footer .jcxx {
      padding-top: 15px;
    }
    .footer .jcxx .jcxx-l {
      width: 100%;
      float: none;
      text-align: center;
    }
    .footer .jcxx .jcxx-l p {
      margin-top: 5px;
      line-height: 28px;
    }
    .footer .jcxx .jcxx-r {
      width: 100%;
      float: none;
      margin-top: 20px;
      text-align: center;
    }

  

   .header {
       height: 450px;
       background-size: auto 100%;
   }
   .header .banner-txt img{
      margin: 0 auto 0 auto;
   }
   .content .menu {
      top: -105px;
      padding: 15px 20px 0 20px;
      width: calc(100% - 40px);
      height: 90px;
   }
    .content .menu .menu-c .x-title{
        margin: 30px auto 30px auto;
        height: 30px;
        font-size: 19px;
        line-height: 30px;
    }
  
    .content .xy {
        margin: 0 20px;
        padding: 0 30px 50px 30px;
        width: calc(100% - 100px);
        font-size: 16px;
    }

   

    .content .tab-item {
        padding: 0 20px;
        width: calc(100% - 40px);
    }
    .content .tab-item .h-title{
        margin: 30px auto 0 auto;
        height: 19px;
        font-size: 19px;
        line-height: 20px;
    }
    .content .tab-item ul li{
        margin-right: 20px;
        width: calc((100% - 20px) / 2);
        height: 90px;
    }
    .content .tab-item ul li:nth-child(3n+3){
        margin-right: 20px;
    }
    .content .tab-item ul li:nth-child(2n+2){
        margin-right: 0;
    }
    .content .tab-item ul li span{
        font-size: 16px;
        line-height: 90px;
    }
}