@media screen and (min-width: 1921px) and (max-width: 4000px) {
  html {
    font-size: 120px;
  }
}
@media screen and (min-width: 1441px) and (max-width: 1600px) {
  html {
    font-size: 90px;
  }
}
@media screen and (min-width: 1201px) and (max-width: 1440px) {
  html {
    font-size: 80px;
  }
}
@media screen and (min-width: 981px) and (max-width: 1200px) {
  html {
    font-size: 60px;
  }
}
@media screen and (min-width: 769px) and (max-width: 980px) {
  /**/
}

@media (min-width: 1024px) {
  .homepage .three .part2 .hd .swiper-button-next {
         display: none;
  }
  .homepage .three .part2 .hd .swiper-button-prev  {
    display: none;
}
}

@media (max-width: 768px) {
  .header {
    padding: 0.1rem 0.15rem;
    font-size: 0.16rem;
  }
  .header .search {
    position: absolute;
    top: 50%;
    width: 1.8rem;
    padding: 0 0.1rem;
    right: 0.55rem;
    transform: translate(0, -50%);
    margin: 0;
  }
  .header .m_nav i {
    width: 0.25rem;
    height: 0.25rem;
  }
  .header .nav {
    width: 100%;
    top: 100%;
  }
  .header .search input {
    height: 0.26rem;
    background: none;
  }
  .header .logo img {
    width: 1.2rem;
  }


  .map .m_nav i {
    width: 0.25rem;
    height: 0.25rem;
  }
  .map .nav {
    width: 100%;
    top: 0%;
  }

  .container {
    width: 100%;
    padding: 0 15px;
    max-width: 100%;
  }
  .hidden-xs {
    display: none;
  }
  .visible-xs {
    display: block;
  }
  /**/
  .homepage .banner .bd p {
    font-size: 0.2rem;
  }
  .homepage .three .tabtitle li {
    font-size: 0.12rem;
    width: 31.5%;
    text-align: center;
  }
  .homepage .three .tabtitle {
    margin-top: 0.3rem;
  }
  .banner_info img {
    height: 2rem;
  }
  .banner_info span {
    font-size: 0.24rem;
    letter-spacing: 0.01rem;
  }
  .banner_info span::after {
    margin-top: 0.15rem;
  }
  .news {
    padding: 0 0 0.3rem 0;
    font-size: 0.14rem;
  }
  .news .a,
  .news .b {
    padding-top: 0.3rem;
  }
  .news .a .bd {
    padding: 0 0.1rem;
  }
  .news .pages {
    margin-top: 0.3rem;
    font-size: 0.14rem;
  }
  .news .a .bd li {
    padding: 0.15rem 0;
  }
  .news .a .bd li a {
    display: block;
  }
  .news .a li .flex_item {
    margin: 0.1rem 0 0;
    padding: 0;
    border: none;
    height: auto;
  }
  .news p {
    line-height: 0.24rem;
  }
  .news b {
    font-size: 0.18rem;
  }
  .news .b .bd {
    padding: 0.15rem;
  }
  .news .b .bd ul {
    margin: -0.05rem;
  }
  .news .b .bd ul li {
    padding: 0.05rem;
  }
  .news .b .bd p {
    margin: 0.1rem 0 0;
  }

  .footer .bd {
    height: auto;
    display: block;
  }
  .footer .bd .left > div {
    padding: 0;
  }
  .footer .bd .logo {
    width: 30%;
  }
  .footer .bd .flex > div {
    padding: 0.15rem;
  }
  .footer .bd .left {
    padding: 0.15rem;
  }
  .footer .bd .left ul li {
    margin-top: 0.2rem;
    width: 100%;
  }
  .footer .bd .left ul p {
    max-width: 100%;
    font-size: 0.12rem;
  }
  .footer .bd .left ul h4 {
    font-size: 0.16rem;
  }

  /**/
  .homepage .four,
  .homepage .six {
    padding: 0.3rem 0;
  }
  .homepage .four .bd {
    display: block;
  }
  .homepage .four .side {
    width: 100%;
    margin: 0.2rem 0 0;
  }
  .homepage .two dt {
    font-size: 0.24rem;
  }
  .homepage .six .bd {
    padding-top: 0.3rem;
  }
  .homepage .six .bd ul li {
    width: 50%;
    padding: 0.1rem;
  }
  .homepage .six .bd img {
    width: 0.8rem;
  }
  .homepage .banner img {
    height: 3rem;
  }
  .homepage .banner .bd {
    font-size: 0.12rem;
    line-height: 0.24rem;
    padding: 0 0.1rem;
  }
  .homepage .banner .bd h3 {
    font-size: 0.18rem;
  }
  .homepage .banner .bd h3 span::before,
  .homepage .banner .bd h3 span::after {
    width: 0.3rem;
  }
  .homepage .one,
  .homepage .fire {
    padding: 0.3rem 0;
  }
  .homepage .one .titlecommon {
    font-size: 0.24rem;
  }
  .homepage .one .bd ul li img {
    width: 1rem;
  }
  .homepage .one .bd ul li .btn {
    width: 0.9rem;
    height: 0.4rem;
    font-size: 0.14rem;
  }
  .homepage .one .bd ul li,
  .homepage .four .bd p {
    font-size: 0.14rem;
  }
  .homepage .one .bd ul li p,
  .homepage .four .bd p {
    line-height: 0.22rem;
  }
  .homepage .one .bd,
  .homepage .fire .bd {
    margin-top: 0.3rem;
  }
  .homepage .four .bd p {
    margin-top: 0.1rem;
  }
  .homepage .two {
    height: 3rem;
    padding: 0 0.15rem;
  }
  .homepage .fire .bd ul {
    margin: -0.05rem;
  }
  .homepage .fire .bd ul li {
    width: 33.333%;
    padding: 0.05rem;
  }
  .homepage .seven .bd ul {
    margin: -0.05rem;
  }
  .homepage .seven .bd ul li {
    width: 50%;
    padding: 0.05rem;
  }
  .homepage .seven .bd {
    margin-top: 0.2rem;
  }
  .homepage .seven {
    padding: 0.3rem 0;
  }
  /**/
  .products .a ul {
    padding: 0.2rem 0;
    font-size: 0.13rem;
  }
  .products {
    font-size: 0.14rem;
  }

  .products .b .bd .box {
    display: block;
    padding: 0.3rem 0;
  }
  .products .b .bd .img {
    margin: 0 auto 0.2rem;
  }
  .products .b {
    padding-bottom: 0.2rem;
  }

  /**/
  .aboutus,
  .aboutus .b li dl {
    font-size: 0.14rem;
  }
  .aboutus .b li dl {
    width: 100%;
    left: 0;
    padding: 0 0.15rem;
  }
  .aboutus .a {
    padding: 0.3rem 0;
    line-height: 0.24rem;
  }
  .aboutus .b li img {
    height: 2rem;
  }
  .aboutus .b li dl dt {
    font-size: 0.24rem;
  }
  .homepage .three {
    padding: 0.3rem 0.15rem;
  }
  .homepage .three .part2 .hd .swiper-button-next {
    right: 0;
    background: #fff;
  }
  .homepage .three .part2 .hd .swiper-button-prev {
    left: 0;
    background: #fff;
  }
  .homepage .three .part2 .bd .flex {
    display: block;
  }
  .homepage .three .part2 .bd .flex > .flex_item {
    margin-bottom: 0.2rem;
  }
  .homepage .three .part2 .bd .flex .pic {
    width: 0.9rem;
    margin-right: 0.1rem;
  }
  .homepage .three .part2 .bd,
  .homepage .three .part2 .hd,
  .homepage .more a {
    margin-top: 0.3rem;
  }
  .homepage .more a {
    font-size: 0.14rem;
  }
  .homepage .three .part1 ul li {
    padding-top: 0.4rem;
  }
  .homepage .three .part1 ul li {
    width: 50%;
  }
  .homepage .three .part3 .piclist ul {
    margin: -0.05rem;
  }
  .homepage .three .part3 .piclist ul li {
    width: 33.333%;
    padding: 0.05rem;
  }
  .homepage .three .part3 .piclist,
  .homepage .three .part3 .textlist {
    padding: 0.3rem 0;
  }
  .homepage .three .part3 .textlist {
    line-height: 0.24rem;
  }
  .homepage .three .part3 .textlist ul li {
    width: 100%;
  }
  .homepage .three .part3 .textlist ol {
    display: block;
  }
  .homepage .more a i {
    width: 0.2rem;
    height: 0.2rem;
  }
  .homepage .three .part2 .hd {
    padding: 0 0.3rem;
  }
  .homepage .three .part2 .hd .swiper-button-next,
  .homepage .three .part2 .hd .swiper-button-prev {
    width: 0.3rem;
    height: 0.45rem;
    margin-top: -0.22rem;
  }
  .homepage .three .part2 .bd .flex li {
    font-size: 0.12rem;
  }
  .homepage .three .part2 .bd h4 {
    font-size: 0.15rem;
  }
  .news .b .bd .list_pic li {
    width: 100%;
  }
  .news .b .bd .list_pic li a {
    display: flex;
    align-items: center;
  }
  .news .b .bd .list_pic li .pic {
    width: 120px;
    margin-right: 15px;
  }
}

@media (max-width: 450px) {
  .homepage .three .tabtitle li a {
    font-size: 0.1rem;
  }
}