@media (min-width: 1921px) {
  .container {
    max-width: 1580px;
  }
}

@media (max-width: 1920px) {
  .container {
    max-width: 1580px;
  }
}

@media (max-width: 1680px) {
  .container {
    max-width: 1320px;
  }

 
.top-box .logo img {
  padding: 0;
  margin: 0;
  max-height: 60px;
}
}

@media screen and (max-width:1440px) {
  .container {
    max-width: 1280px;
  }
  .nav-menu a { padding: 0 10px;}
  #banner .swiper-button {
    display: none;
  }
  .top-box .top_tel { padding: 0 10px;}
.top-box .logo img {
  padding: 0;
  margin: 0;
  max-height: 55px;
}
}

@media screen and (max-width:1280px) {
  .container {
    max-width: 1200px;
  }

  .nav-menu ul li {
    width: auto;
    padding: 0;
  }

  .top-box .logo img {
    max-height: 55px;
  }
  .nav-menu a{ padding: 0 3px;}
 

.top-box .top_tel {
  margin-left: 0;
}
.top-box .logo img {
  padding: 0;
  margin: 0;
  max-height: 50px;
}
.top-box .top_tel{ display: none;}
}

@media screen and (max-width:990px) {
.jiant { display: none;}
  /*头部*/
  .back-to-top {
    display: none !important;
  }
  .top-box{ padding: 0;}
  
  #header.header-scrolled{ background: #fff;}
  .headerBotRig {
    position: fixed;
    right: 70px;
    top: 15px;
    z-index: 999 !important;
}
#banner .pc_banner { display: none;}
#banner .mob_banner { display: block;}
  #header {
    height: 70px;
    position: relative;


  }
  .mobile-nav-toggle {
    top:13px;
  }
  .top-box .top_tel{ display: none;}
  .top-box .logo {
    justify-content: flex-start;
    height: 70px;
    padding-left: 10px;
  }

  .top-box .logo img {
    max-height: 55px;
  }

  .top-box .logo .logo-tu1 {
    display: block;
  }

  .top-box .logo .logo-tu2 {
    display: none;
  }
  #header.header-scrolled .top-box .logo .logo-tu1 {
    display: block !important;
}
  #header.header-scrolled .top-box .logo .logo-tu2 {
    display: none !important;
}
  .top-box { background: #fff;}
  #header.header-scrolled .top-box { background: #fff;}
  
  #case .swiper-slide img{ height: 240px;}
  /*banner*/

  #banner .swiper-button {
    display: none;
  }

  #banner .swiper-container-horizontal>.swiper-pagination-bullets,
  .swiper-pagination-custom,
  .swiper-pagination-fraction {
    bottom: 10px;

  }

  #banner .swiper-slide .pcimg {
    display: none !important;
  }

  #banner .swiper-slide .mobimg {
    display: block !important;
  }

  /*about*/
 
  .about-box {
    flex-direction: column;
  }

  .about_fl {
    width: 100%;
    padding-right: 0;
  }

  .about_fr {
    width: 100%;
  }


  .mobile-nav .drop-down li a img {
    display: none;
  }

  .pad_80 {
    padding: 30px 0;
  }

  .footer-list2 {
    display: none;
  }

  .main_title p b {
    font-size: 32px;
  }

  .main_title2 b {
    font-size: 24px;
  }

  .mobile-body-mask {
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    position: fixed;
    left: 0;
    top: 0;
    z-index: 999
  }

  .mobile-ico-close {
    width: 30px;
    height: 30px;
    background: #fff url(../images/close1.png) center center no-repeat;
    background-size: 50% auto;
    position: absolute;
    right: -35px;
    top: 0;
  }

 

  .mobile-head-items {
    position: fixed;
    top: 0;
    right: 0px;
    background: #000;
    width: 100%;
    height: 35px;
    line-height: 35px;
    text-align: left;
    display: block;
    z-index: 995;
    font-size: 24px;
    line-height: 35px;
  }

  .mobile-head-items .title {
    margin-top: 3px;
  }

  .mobile-head-item {
    float: right;
    width: 45px;
  }

  .mobile-head-item.mobile-head-aside {
    float: right
  }

  .mobile-head-item .title {
    width: 100%;
    height: 25px;
    line-height: 25px;
    overflow: hidden;
    text-align: center;
    color: #fff;
    cursor: pointer;
  }

  .mobile-head-item .title a {
    position: relative;
    display: block;
    color: #FFF;
  }

  .mobile-head-item .main-content-wrap {
    background: #FFF;
    top: 0;
    display: block;
    z-index: 99999;
  }

  .mobile-head-item .main-content-wrap .content-wrap {
    overflow-y: auto;
    height: 100%;
    padding: 15px 10px;
    background-color: #fff;
  }

  .mobile-head-item .main-content-wrap.middle-content-wrap .content-wrap {
    overflow-y: hidden;
  }

  .mobile-head-item .side-content-wrap {
    position: fixed;
    display: block;
    left: -70%;
    width: 70%;
    height: 100%;
    top: 105px;
  }

  .mobile-head-item .middle-content-wrap {
    position: absolute;
    left: 0;
    width: 100%;
    height: auto;
    padding: 20px 0;
    opacity: 0;
    visibility: hidden;
  }

  .mobile-head-item .middle-show-content-wrap {
    top: 30px;
    visibility: visible;
    opacity: 1;
  }
.productbg{ padding-top: 30px;}
  .pro_list a {
    position: relative;
    background: #fff;
    z-index: 1;
    padding: 10px;
    margin: 10px;
    width: calc(50% - 20px);
    overflow: hidden;
  }
 
  .scroll{ display: none;}
  .zyzs-content b { font-size: 30px;}
  .zyzs {
    margin: 0;
    width: calc(50% - 20px);}
 
  .news_box{ flex-direction: column;}
  .zyzs-icon a { display: flex; flex-direction: column;  align-items: center;}
    .zyzs-icon a img{ width: 32px; height: 32px;}
  .news_fl{ width: 100%; padding-right: 0;}
  .news_fr {
    width: 100%;
    padding-left: 0;
    margin-top: 20px;
}
.foot .ft-nav .ft-nav-list dl:first-child{ display: none;}
.foot .ft-nav .ft-nav-list{ flex-direction: column;}
.foot .ft-nav .ft-nav-list dl{ width: 100%!important;}
.foot .ft-nav .ft-nav-list dt{ text-align: center;}
.foot .ft-nav .ft-nav-list dl:nth-child(2) dd p{ width: 100%; text-align: center;}
.foot .ft-nav .ft-nav-list dl:last-child dd p{ width: 100%;}
.foot .ft-nav .ft-nav-list dl:last-child dd img { margin: 0px auto;}
.copyright .container{ flex-direction: column;}
.foot .ft-nav .ft-nav-list dt{ border: none; margin-bottom: 0;}
.zyzs { flex-direction: column;}
.zyzs-content{ width: 100%;}
.zyzs-icon{ width: 100%; padding: 20px 0;}
.zyzs:hover .zyzs-icon {
  margin-top:0px;
}
 .ys_case_mid .hover h4 {
    font-size: 18px;
  }

  .ys_case_mid .hover p {
    font-size: 14px;
  }

  .ys_case_mid .hover p img {
    height: 30px;
  }
.ys_case_bg{ display: none;}
  .ys_case_mid .default .main_title {
    font-size: 18px;
  }

  .ys_case_mid {
    height: 600px;
  }

  .ys_case_bg {
    height: 600px;
  }
   .ys_case_mid {
    height: 100%;
    margin: 0 10px;
  }

  .hover {
    position: relative;
    border-radius: 0;
    opacity: 1;
  }

  .ys_case_mid .default {
    display: none;
  }
      .ys_case .case-slide {
        width: 100%;
        float: none;
        margin: 20px 0px;
        z-index: 9;
        position: relative;
        opacity: 1;
        height: 100%;
    }
#case .swiper-slide p{ font-size: 14px; line-height: 28px;  padding: 10px 0;height: auto;}
.zzsc .tab a{ font-size: 20px;  background: #fff; color: #000;}
.zzsc .tab a.on{ background: #2AA2DE; color: #fff;}
.zzsc .co{ margin-top: 10px;}
.zzsc .tab{ padding-top: 0;}
.ys_list_left {
    float: left;
    width: 100%;
    padding: 20px 0px;
    line-height: 24px;
    font-size: 14px;
    color: #585657;
}

.ys_list_right{ width: 100%;}
.ys_list_left b{ margin-top: 0;}
.main_title p{ font-size: 34px;}
.main_title span{ font-size: 20px;}

.ys_list_left b{ font-size: 28px;}
.co li b:before{ font-size: 50px;}
.zzsc .co > ul{ padding: 10px;}
.ys_list_left p{ font-size: 14px;}
.tit{ font-size: 22px;}
}

@media screen and (max-width:768px) {

  /*头部*/
  #header {
    height: 60px;
  }

  .top-box .logo {
    justify-content: flex-start;
    height: 60px;
  }

  .top-box .logo img {
    max-height: 45px;
  }



  .product_con {
    padding: 10px;

  }


  .footer-copyright {
    padding: 10px 0 ;
  }

  .footer-main {
    padding-bottom: 20px;
  }

  .product {

    margin-top: 0px;
  }

  /*about*/

  .about_txt {
    font-size: 15px;
    line-height: 24px;
    margin: 15px auto;
    width: 88%;

  }

  .ab_list2 {

    margin-top: 30px;

  }

  .banner-slide-content .title {
    font-size: 20px;
    line-height: 32px;
    font-weight: 500;
    color: #fff;
    display: block;
    margin-bottom: 15px;
    letter-spacing: -0.25px;
    text-transform: capitalize;
  }


  .banner-slide-content p {

    font-size: 18px;
    font-family: "Poppins", sans-serif;
    color: #fff;

  }

  .about_fl p {
    margin: 0;
  }

  .bottom_nav {
    display: block;
  }

  .bottom_nav a span {
    margin: 0;
  }

  .bottom_nav a {
    flex-direction: column;
  }

  .bottom_nav a img {
    width: 26px;
  }

  .copyright {
    padding: 20px 0 ;
  }

  .copyright i {
    float: none;
  }

  .mobile-nav a {
    height: auto;

  }

  .mobile-nav .drop-down li a {
    background: url(../images/jt.png) no-repeat left;

  }


  .news_content .day span { font-size: 24px;}
.main_title p{ font-size: 24px;}
#case .swiper-slide img{ height: 200px;}
.mobile-nav-toggle { top:10px}
.zyzs{ padding: 20px; }

}

@media screen and (max-width:640px) {

  .main_title {
    padding: 5px;
  }

  #banner .swiper-slide .container {
    position: absolute;
    left: 0;
    right: 0;
    top: 33%;
    bottom: 0;
    margin: 0 auto;
  }

  .banner-slide-content .title {
    font-size: 16px;
    line-height: 28px;
    font-weight: 500;
    color: #fff;
    display: block;
    margin-bottom: 10px;

  }
  .banner-slide-content p {

    font-size: 14px;
    font-family: "Poppins", sans-serif;
    color: #fff;
  }
  .main_title p {
    margin-bottom: 8px;
  }


  .main_title p b {
    font-size: 28px;
  }
  .about_fr{ margin: 20px 0;}
  
  .main_title span{ font-size: 16px;}
 
  #case .swiper-slide img { height: 180px;}
  .news_content a{ margin-right: 0;}
  .news_info a b{ margin-bottom: 10px;}
  .news_info a p{ padding: 10px 0;}
  .news_content .newscon b{ font-size: 16px;}
  .foot{ padding: 30px 0;}
  .about_fr .ab_txt{ margin-top: 30px!important;}
}

@media screen and (max-width:480px) {
  #header {
    height: 50px;
  }

  .mobile-nav-toggle {
    top: 8px
  }
  .headerBotRig { top:9px}
  .top-box .logo {
    justify-content: flex-start;
    height: 50px;
  }
  
  .top-box .logo img {
    max-height: 35px;
  }
  
  .mobile-nav-toggle i {
    width: 34px;
    height: 34px;
    line-height: 34px;

  }
  .about-box {
    flex-direction: column;
  }
  .about_fl {
    width: 100%;
    padding: 0;
  }
  .banner-slide-content p {
    margin-top: 0;
    font-size: 12px;
  }
  .banner-slide-content .title {
    font-size: 14px;
    line-height: 24px;
  }
  #banner .swiper-slide .container {
    top: 13%
  }
  #case .swiper-slide img{ height: 170px;}
  .news_content .day span{ font-size: 15px;}
  .news_content .day p{ font-size: 16px;}

  .zyzs-content p{ color: #fff;}
.zzsc .tab a{ font-size:15px; }
.ys_case_mid .hover h4{ font-size: 18px;}
.ys_case_mid .hover strong a{ font-size: 14px;}
.ys_list_left p{ padding-top: 0;}
.news_content .day {
  display: none;
}
.news_content .newscon{ width: 100%;}
    #case .swiper-slide img {
      height: auto;
    }
    #case .swiper-slide{ margin: 0 0 30px;}
    .zyzs{ padding: 10px;}
    .zyzs-icon{ padding: 5px; font-size: 15px;}
    .news_info a b{font-size: 15px;}
.news_info a{ margin-bottom: 10px;}
}