html,
body {
  scroll-behavior: smooth;
}


/*  */

.swiper-pagination-bullet {
  background-color: #fff;
}

.header {
  width: 100%;
  background-size: auto;
  margin: auto;
  position: fixed;
  top: 0;
  z-index: 99;
  opacity: .97;
  transition: all .35s ease-in-out;
  background-color: rgba(255, 255, 255, .97);
  box-shadow: 0 0 3px rgb(0 0 0 / 10%);
}

.header.transparent {
  background: rgba(0, 0, 0, .4);
}

.header.transparent .nav-item a {
  color: #fff;
}

.header .navbar {
  margin-bottom: 0;
}

.header .navbar-collapse {
  padding: 0;
}

.header .navbar a {
  font-size: 16px;
}

.logo img {
  height: 28px;
}

.navContent {
  width: 1200px;
  margin: 0 auto;
  line-height: 70px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mainContentWrapper {
  background-color: transparent;
  background-image: none;
  background-repeat: no-repeat;
  width: 100%;
  /* max-width: 1240px; */
  margin: auto;
}

.nav {
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 0 0 rgb(0 0 0 / 0%);
}

.navbar {
  min-height: auto;
}

.nav-item {
  font-size: 16px;
  padding: 0 5px;
  margin: 0;
  position: relative;
  height: 100%;
  line-height: inherit;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-item.current {
  overflow: hidden;
  background-color: rgba(255, 255, 255, 0);
  background-image: none;
  background-position: 50% 50%;
  background-size: auto;
}

.nav-item.nav-item.current a {
  color: #4ea5ff;
  font-weight: bold;
}

.nav-item a {
  height: 70px;
  margin: 0;
  padding: 6px 14px !important;
  outline: none;
  display: block;
  height: 100%;
  color: #333333;
  font-weight: 400;
  font-style: normal;
  text-align: center;
  font-size: 14px;
  text-decoration: none;
}

.nav-item a:hover,
.nav-item a:visited,
.nav-item a:focus {
  background: none !important;
}

.navbar-nav .login-btn {
  border: 1px solid #999999;
  border-radius: 5px;
  margin-left: 20px;
}

.navbar-nav .toggleEn {
  border-left: 1px solid #999999;
  margin-left: 15px;
  font-size: 14px!important;
  line-height: 30px;
  padding: 0 15px;
  color: #999;
}

.nav .open>a.toggleEn,
.nav .open>a.toggleEn:hover,
.nav .open>a.toggleEn:focus,
.nav>li>a.toggleEn:hover,
.nav>li>a.toggleEn:focus {
  background-color: transparent !important;
  border-color: #999;
}

.toggleText {
  font-size: 14px !important;
  color: #666 !important;
}

.xsBtn {
  padding: 6px 15px!important;
  border: 1px solid #ccc;
  color: #fff;
  margin: 15px 5px!important;
  line-height: 20px;
  font-size: 15px;
}

.xsBtn:hover {
  color: #4ea5ff;
}

.banner-box {
  background-image: url("../images/banner.jpg");
  background-position: 50% 50%;
  background-size: cover;
  background-color: rgb(255, 255, 255);
  opacity: 1;
  width: 100%;
  height: 800px;
  position: absolute;
  z-index: -1;
  top: 0;
  left: 0;
}

.swiper-container {
  width: 100%;
  height: auto;
}

.swiper img {
  width: 100%;
}

.centerWrapper {
  width: 1200px;
  margin: 0 auto;
}

.title {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 0 60px 0;
}

.title h2 {
  font-size: 30px;
  font-weight: bold;
  margin: 0 40px;
}

.productContent h3 {
  font-size: 22px;
  font-weight: bold;
  margin: 0;
  margin-bottom: 40px;
}

.productContent p {
  font-size: 18px;
  color: #4c4c4c;
  line-height: 34px;
}

.featureGroup {
  display: flex;
  align-items: center;
  justify-content: center;
}

.featureGroup .item {
  width: 320px;
  text-align: center;
}

.site-header {
  position: fixed;
  top: 0;
  z-index: 103;
  width: 100%;
  min-height: 50px;
  opacity: .97;
  border-bottom: 1px solid transparent;
  background-color: rgba(255, 255, 255, .97);
  -webkit-transition: all .35s ease-in-out;
  -o-transition: all .35s ease-in-out;
  transition: all .35s ease-in-out;
}

.itemBox {
  box-shadow: 0px 0px 2px rgba(153, 153, 153, 0.6);
  border-radius: 10px;
  text-align: center;
  height: 280px;
  width: 260px;
  /* flex: 1; */
  margin-top: 60px;
}
.itemBox-en {
  box-shadow: 0px 0px 2px rgba(153, 153, 153, 0.6);
  border-radius: 10px;
  text-align: center;
  height: 280px;
  width: 260px;
  /* flex: 1; */
  margin-top: 60px;
}
.Box-en {
  padding: 0 20px;
  height: 310px;
}

.itemBox img {
  margin: 45px 0;
}

.itemBox h3,
.infoBox h3 {
  font-size: 18px;
  font-weight: bold;
  margin: 0;
}

.itemBox p {
  font-size: 15px;
  color: #333;
  margin-top: 20px;
}

.infoBox {
  border: 2px solid #fff;
  border-radius: 10px;
  background-color: rgb(244, 247, 251);
  box-shadow: 0px 0px 10px 0px rgba(236, 238, 241, 0.6);
  width: 260px;
  height: 390px;
  padding: 0 20px;
  text-align: center;
}

.infoBox-en {
  border: 2px solid #fff;
  border-radius: 10px;
  background-color: rgb(244, 247, 251);
  box-shadow: 0px 0px 10px 0px rgba(236, 238, 241, 0.6);
  width: 260px;
  height: 400px;
  padding: 0 20px;
  text-align: center;
}
}

.infoBox h3 {
  margin-top: 40px;
}

.infoBox img {
  margin: 25px 0;
}

.infoBox p {
  font-size: 15px;
  color: #333;
}

.contactGroup {
  margin: 60px 0 80px;
  display: flex;
  align-items: center;
}

.contactBox {
  background-color: #ecf5ff;
  flex: 1;
  height: 240px;
  padding: 25px 40px;
}

.contactBox h3 {
  font-size: 24px;
  font-weight: bold;
}

.contactItem {
  display: flex;
  align-items: center;
  margin: 30px 0;
}

.contactItem p {
  margin: 0 15px;
  font-size: 18px;
}

.contactItem text {
  font-size: 16px;
}

.footer {
  background-color: #1b1b1b;
}

.footer-address {
  text-align: center;
  color: #888;
  padding: 30px;
  font-size: 14px;
  line-height: 30px;
}

.footer-address p {
  margin: 0;
}


/*  */


/* media */

@media (max-width:768px) {
  /*  */
  .centerWrapper {
    width: 100%;
    padding: 0 20px;
  }
  .navbar {
    margin-bottom: 0;
    margin: 8px;
  }
  .nav-item a {
    text-align: right;
  }
  /*  */
  .menu {
    height: 30px;
  }
  .navContent {
    width: 100%;
    align-items: flex-start;
  }
  .navContent .navbar {
    margin: 0 8px;
  }
  .navContent .navbar-toggle {
    padding: 0;
    margin: 0;
  }
  .nav {
    display: inherit;
  }
  .navbar-toggle {
    /* margin-right: 20px; */
    /* padding: 0; */
    padding: 10px;
    margin: 0;
    /* margin-top: 20px; */
  }
  .logo img {
    height: 30px;
    margin-left: 10px;
  }
  .featureGroup {
    display: block;
  }
  .featureGroup .item {
    width: 100%;
    margin-bottom: 20px;
  }
  .featureGroup .itemBox {
    width: 100%;
    margin-top: 30px
  }
  .featureGroup .infoBox {
    width: 100%;
    margin-bottom: 20px;
    height: 360px;
  }
  .processImg img {
    width: 100%;
  }
  .contactGroup {
    display: block;
  }
  .contactGroup .conImg {
    width: 100%;
  }
  .login-btn {
    display: none!important;
  }
  .navbar-nav .toggleEn {
    border-left: none;
    border-top: 1px solid #888;
    margin-top: 10px;
    padding: 10px 15px !important;
    color: #444;
    text-align: right;
  }
  .toggleText {
    color: #444!important;
    text-align: right;
  }
  .Box-en {
    height: 290px;
  }
  .featureGroup .infoBox-en {
    height: 400px;
  }
}

@media (max-width:375px) {
  .title {
    padding: 60px 0 30px 0;
  }
  .title h2 {
    font-size: 22px;
    margin: 0 20px;
  }
  .productContent h3 {
    font-size: 18px;
    margin-bottom: 20px;
  }
  .productContent p {
    font-size: 15px;
    line-height: 28px;
  }
  .featureGroup .infoBox-en {
    height: 450px;
  }
}


/* @media (max-width: 768px) {} */

@media (min-width:768px) and (max-width:1200px) {
  .navContent {
    width: 100%;
  }
  .centerWrapper {
    width: 100%;
    padding: 0 20px;
  }
  .featureGroup .itemBox {
    flex: 1;
    margin: 60px 5px 0 5px;
  }
  .itemBox img {
    margin: 30px 0;
  }
  .featureGroup .infoBox {
    flex: 1;
    padding: 0;
    margin: 0 5px;
  }
  .infoBox h3 {
    margin-top: 30px;
  }
  .infoBox p {
    padding: 0 5px;
  }
  .processImg img {
    width: 100%;
  }
  .conImg {
    height: 200px;
  }
  .contactBox {
    height: 200px;
    padding: 0 40px;
  }
}

@media (min-width: 1200px) {}