@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;
  }
  .nav .main .pc-nav ul li {
    width: 13%;
  }
  .nav .main .pc-nav ul li a {
    font-size: 18px;
  }
  .nav .main .pc-nav ul li:nth-of-type(1),
  .nav .main .pc-nav ul li:nth-last-of-type(1) {
    width: 11%;
  }
  .nav .main .nav-rgt {
    display: block;
  }
  .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 .logo {
    width: 80%;
    margin: 0 auto;
    float: none;
    padding: 18px 0 0 0;
  }
  .nav .main {
    overflow: hidden;
  }
  .nav .main .yd-nav {
    display: block;
  }
  .nav .main .yd-nav .swiper-slide-container {
    padding-right: 9.3%;
  }
  .nav .main .yd-nav .swiper-slide-container a {
    font-size: 17px;
  }
  .nav .main .pc-nav {
    display: none;
  }
}