@media screen and (max-width: 1400px) {
  .gc-cont-pic > img {
    margin-right: 30px;
  }
}
@media screen and (max-width: 1300px) {
  .pdu {
    display: flex;
    align-items: center;
  }
}
@media screen and (max-width: 1100px) {
  .about-cont {
    flex-direction: column;
  }
  .about-cont-pic {
    width: initial;
  }
  .about-cont-txt {
    margin: 5.6% 0 0 0;
    width: initial;
  }
  .pdu-xq-r,
  .pdu-xq-l {
    width: 100%;
  }
  .che-ul {
    margin-top: 45px;
    overflow: hidden;
    margin-left: -1.77%;
}
  .che-ul li {
    width: 31.56%;
    margin-bottom: 20px;
    float: left;
    margin-left: 1.77%;
}
}
@media screen and (max-width: 1000px) {
  .pdu {
    width: 100%;
    padding: 35px;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .pdu-pic {
    width: initial;
  }
  .pdu-cont {
    width: 100%;
    margin-left: initial;
    margin-top: 20px;
  }
  .pdu-ul li {
    width: 25%;
    margin-right: 0% !important;
  }
  .pdu-title {
    text-align: center;
  }
  .product-top li {
    width: 48%;
    margin-bottom: 20px;
  }
  .product-top ul {
    width: 100%;
  }
}
@media screen and (max-width: 950px) {
  .nav {
    display: none;
  }
  .menu {
    display: flex;
  }
  .gc-cont-pic {
    text-align: center;
  }
  .gc-cont-pic > img {
    float: initial;
    margin-right: initial;
  }
  .gc-cont-txt {
    margin-top: 40px;
  }
  .news-pic {
    height: initial;
  }
  .news-cont li {
    width: 45.6%;
  }
  .media-cont li {
    width: 47.2%;
  }
  .news-xq-l,
  .news-xq-r {
    float: initial;
    width: initial;
  }
  .news-xq-r {
    margin-top: 30px;
  }
  .news-back,
  .news-icon {
    width: 50%;
  }
  .news-icon {
    justify-content: space-evenly;
  }
  .news-xq-page {
    padding-top: 20px;
    border-top: 1px #e8e8e8 solid;
    display: flex;
    justify-content: space-between;
  }
  .news-previous,
  .news-next {
    width: 48%;
    padding: 0;
    border: none;
  }

  .contact-top-txt,
  .contact-top-tx span {
    width: 100%;
  }
  .contact-top-btn {
    margin-top: 20px;
  }
  .zhengshu-cont li {
    width: 45.2%;
  }
}

@media screen and (max-width: 830px) {
  .footer {
    height: initial;
  }
  .ft-l {
    float: initial;
  }
  .ft-r {
    padding: 25px 0;
    float: initial;
    text-align: center;
  }

  .my-map {
    width: 98%;
    height: 200px;
  }
  .ft-r ul {
    margin-top: 25px;
  }
  .ft-r li {
    margin: 0 8px;
  }
}
@media screen and (max-width: 640px) 
{
   .header-top-r {
    position: absolute;
    right: 140px;
    top: 29px;
   }
  .gc-image-cont {
    width: 100%;
    margin-right: initial;
    margin-top: 2.87%;
  }
  .news-cont li {
    width: 100%;
    margin-left: initial;
  }
  .news-cont ul {
    margin-left: initial;
  }
  .media-cont li {
    width: 100%;
    margin: 30px 0 0 0;
  }
  .media-cont ul {
    margin: 0;
  }
  .video {
    height: 100%;
  }
  .gc-cont-pic > img {
    width: 100%;
  }
  .pdu-ul2 li,
  .pdu-xq-cont li {
    width: 47.3%;
  }
  .product-top li{
    width: 100%;
  }
  .che-ul {
   
    margin-left: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.che-ul li {
  width: 70%;
  float: left;
  margin-left: 0;
}
  /*字体*/
  .ft-title {
    font-size: 24px;
  }
  .ft-tx {
    display: flex;
    font-size: 18px;
  }
  .mb-nav {
    font-size: 16px;
  }
}

@media screen and (max-width: 540px) {
  .logo {
    width: 15%;
  }
}