.main {
  width: 81%;
  max-width: 1560px;
  position: relative;
  margin: 0 auto;
}

.container {
  width: 87.5%;
  max-width: 1680px;
  position: relative;
  margin: 0 auto;
}

.header {
  width: 100%;
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: rgba(0, 0, 0, 0.7);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
}

.header .search {
  width: 6.25%;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  flex-shrink: 0;
  cursor: pointer;
}

.header .search i {
  font-size: 20px;
  color: #999;
}

.header .main {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header .main .item {
  width: 10%;
  height: 100%;
  font-size: 16px;
  color: #ccc;
  display: block;
  text-align: center;
  position: relative;
}

.header .main .item > a {
  width: 100%;
  height: 100%;
  line-height: 110px;
  display: inline-block;
  color: #ccc;
}

.header .main .item span {
  display: inline-block;
  position: relative;
  height: 100%;
  line-height: 110px;
}

.header .main .item img {
  width: 114px;
  flex-shrink: 0;
}

.header .main .item.logo {
  width: 22%;
}

.header .main .item.active span:before {
  content: '';
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 2px;
  background-color: #fff;
  border-radius: 1px;
}

.header .main .item .down-box {
  position: absolute;
  top: 100%;
  width: 100%;
  left: 0;
  height: 0;
  overflow: hidden;
  transition: height 0.3s;
}

.header .main .item .down-box > a {
  width: 100%;
  height: 50px;
  line-height: 50px;
  text-align: center;
  display: block;
  padding: 0 10px;
  font-size: 16px;
  color: #ccc;
  background-color: rgba(0, 0, 0, 0.6);
  transition: all 0.3s;
}

.header .main .item .down-box > a:hover {
  background-color: rgba(0, 0, 0, 0.8);
  transition: all 0.3s;
}

.header .main .item:hover .down-box {
  height: 320px;
  transition: height 0.3s;
}

.header .language-box {
  width: 6.25%;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  flex-shrink: 0;
  cursor: pointer;
}

.header .language-box .language {
  padding: 5px;
  position: relative;
}

.header .language-box .language .txt {
  color: #999;
  font-size: 16px;
  display: inline-block;
  margin-right: 6px;
  text-transform: uppercase;
  font-family: 'Din';
}

.header .language-box .language i {
  font-size: 12px;
  color: #999;
}

.header .language-box .language .down-box {
  position: absolute;
  top: 30px;
  left: 0;
  width: 100%;
  background-color: #ccc;
  display: none;
}

.header .language-box .language .down-box a {
  display: block;
  height: 30px;
  line-height: 30px;
  color: #666;
  font-size: 16px;
  text-align: center;
  border-bottom: 1px solid #e6e6e6;
}

.header .language-box .language .down-box a:last-child {
  border-bottom: 0;
}

.header .language-box .language:hover .down-box {
  display: block;
}

.header.header-fix {
  position: sticky;
  background-color: #000;
}

.m-header, .m-cover {
  display: none;
}

.com-title {
  display: block;
}

.com-title .en {
  font-size: 52px;
  line-height: 56px;
  color: #333;
  font-family: 'Din';
}

.com-title .cn {
  font-size: 36px;
  line-height: 36px;
  margin-top: 10px;
}

.hide {
  display: none !important;
}

.com-more {
  width: 170px;
  height: 60px;
  line-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background-color: #333;
}

.com-more span {
  font-size: 14px;
  text-transform: uppercase;
  font-family: 'Din';
}

.com-more i {
  font-size: 16px;
  display: inline-block;
  transform: rotate(90deg);
  margin-left: 10px;
}

.com-more.white {
  border: 1px solid #fff;
  background-color: transparent;
}

.com-more.black {
  border: 1px solid #e6e6e6;
  background-color: transparent;
  color: #333;
}

.inner-banner {
  position: relative;
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
}

.inner-banner img {
  width: 100%;
  opacity: 0;
}

.inner-banner .text-position {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.inner-banner .text-position .title {
  position: absolute;
  left: 9.6%;
  bottom: 80px;
  color: #fff;
}

.inner-banner .text-position .title .en {
  font-size: 60px;
  line-height: 60px;
  font-family: 'Bigc';
}

.inner-banner .text-position .title .cn {
  font-size: 32px;
  line-height: 32px;
  margin-top: 20px;
}

.inner-banner .text-position .scroll-box {
  display: flex;
  align-items: center;
  flex-direction: column;
  position: absolute;
  bottom: 80px;
  right: 9.25%;
  z-index: 10;
}

.inner-banner .text-position .scroll-box .line {
  width: 1px;
  height: 34px;
  background-color: #999;
}

.inner-banner .text-position .scroll-box span {
  display: inline-block;
  margin-top: 14px;
  color: #999;
  font-size: 12px;
  writing-mode: vertical-lr;
  -webkit-writing-mode: vertical-rl;
  -ms-writing-mode: vertical-rl;
  -o-writing-mode: vertical-rl;
  -moz-writing-mode: vertical-rl;
  writing-mode: tb-rl;
}

.second-nav {
  margin-top: 80px;
}

.second-nav .main {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.second-nav .main .item {
  margin-bottom: 10px;
}

.second-nav .main .item > span {
  display: inline-block;
  position: relative;
  font-size: 20px;
  color: #666;
}

.second-nav .main .item.active > span {
  font-size: 24px;
  color: #333;
  font-weight: bold;
}

.second-nav .main .item.active > span:before {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 12px;
  background-color: #e0e0e0;
  z-index: -1;
}

.second-nav .main .line {
  width: 1px;
  height: 10px;
  background-color: #e6e6e6;
  margin: 0 30px;
}

.case-banner {
  position: relative;
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
}

.case-banner img {
  width: 100%;
  opacity: 0;
}

.case-banner .text-position {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
}

.case-banner .text-position .title {
  color: #fefefe;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.case-banner .text-position .title .en {
  font-size: 60px;
  line-height: 60px;
  font-family: 'Bigc';
}

.case-banner .text-position .title .cn {
  font-size: 56px;
  line-height: 60px;
  margin-top: 20px;
  font-weight: bold;
}

.case-banner .text-position .title .txt {
  font-size: 36px;
  line-height: 40px;
  margin-top: 10px;
}

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

.pages-box .item {
  width: 36px;
  height: 36px;
  line-height: 36px;
  text-align: center;
  display: inline-block;
  font-size: 16px;
  color: #999;
  border: 1px solid #e6e6e6;
  margin: 0 5px;
}

.pages-box .item.prev, .pages-box .item.next {
  background-size: 12px 13px;
  background-repeat: no-repeat;
  background-position: center;
}

.pages-box .item.prev {
  background-image: url("../img/41.png");
}

.pages-box .item.next {
  background-image: url("../img/42.png");
}

.pages-box .item:hover, .pages-box .item.active {
  background-color: #333;
  color: #fff;
}

.join-form {
  width: 600px;
  height: 354px;
  background-color: #fff;
  padding: 30px 40px;
}

.join-form .line {
  width: 100%;
  height: 36px;
  display: inline-block;
  margin-bottom: 6px;
}

.join-form .line .label {
  height: 36px;
  display: inline-block;
  float: left;
  font-size: 16px;
  line-height: 36px;
}

.join-form .line input {
  display: inline-block;
  float: left;
  width: 438px;
  height: 36px;
  background-color: #fff;
  border: none;
  border-bottom: 1px solid #f1f5fd;
  padding: 0 10px;
}

.join-form .line textarea {
  display: inline-block;
  float: left;
  width: 100%;
  height: 100px;
  background-color: #fff;
  border: 1px solid #f1f5fd;
  padding: 10px;
  resize: none;
}

.join-form .line .load {
  width: 438px;
  height: 25px;
  background-color: #fff;
  border: none;
  margin-top: 6px;
  display: inline-block;
  float: left;
}

.join-form .line img {
  display: inline-block;
  margin-left: 10px;
  width: 80px;
  height: 34px;
}

.join-form .line button {
  width: 120px;
  height: 38px;
  border-radius: 4px;
  background-color: #333;
  line-height: 38px;
  text-align: center;
  font-size: 16px;
  color: #fff;
  border: none;
  float: right;
}

.join-form .line.heightauto {
  height: auto;
}

.mail-box {
  background-color: #f3f3f3;
}

.mail-box .title {
  font-size: 24px;
  color: #333;
  font-weight: bold;
}

.mail-box .mail-form {
  margin-top: 50px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.mail-box .mail-form .input-line {
  width: 48%;
  height: 60px;
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.mail-box .mail-form .input-line input {
  width: 100%;
  height: 100%;
  background-color: #fff;
  padding-left: 20px;
  border: 1px solid transparent;
}

.mail-box .mail-form .input-line input:focus {
  border-color: #333;
}

.mail-box .mail-form .input-line .code-img {
  width: 200px;
  height: 100%;
  flex-shrink: 0;
  cursor: pointer;
}

.mail-box .mail-form .input-line .code-img img {
  width: 100%;
  height: 100%;
}

.mail-box .mail-form .input-line.short {
  width: 31%;
}

.mail-box .mail-form textarea {
  width: 100%;
  border: 1px solid transparent;
  padding: 20px;
  background-color: #fff;
  resize: none;
  margin-bottom: 20px;
}

.mail-box .mail-form textarea:focus {
  border-color: #333;
}

.mail-box .mail-form .send-btn {
  width: 175px;
  height: 60px;
  line-height: 60px;
  background-color: #333;
  font-size: 14px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 0;
}

.mail-box .mail-form .send-btn i {
  display: inline-block;
  margin-left: 14px;
  font-size: 16px;
}

.product-show-cover {
  position: fixed;
  z-index: 1001;
  top: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.6);
  width: 100%;
  height: 100%;
}

.product-show-cover .product-img-show {
  width: 62.5%;
  margin: 0 auto;
  position: relative;
  top: 50%;
  transform: translateY(-50%);
}

.product-show-cover .product-img-show .swiper-show {
  width: 58%;
  /* height: 500px; */
  height: 600px;
  margin: 0 auto;
}

.product-show-cover .product-img-show .swiper-show .swiper-slide {
  width: 100% !important;
  height: 100%;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
}

.product-show-cover .product-img-show .swiper-show .swiper-slide img {
  width: auto;
  opacity: 0;
}

.product-show-cover .product-img-show .show-prev, .product-show-cover .product-img-show .show-next {
  border-radius: 50%;
  width: 80px;
  height: 80px;
  text-align: center;
  line-height: 80px;
  border: 1px solid #fff;
  color: #fff;
  cursor: pointer;
  outline: none;
  position: absolute;
  top: calc(50% - 80px);
}

.product-show-cover .product-img-show .show-prev i, .product-show-cover .product-img-show .show-next i {
  font: size 16px;
  display: inline-block;
}

.product-show-cover .product-img-show .show-prev.swiper-button-disabled, .product-show-cover .product-img-show .show-next.swiper-button-disabled {
  border-color: transparent;
}

.product-show-cover .product-img-show .show-prev {
  left: 2.5%;
}

.product-show-cover .product-img-show .show-prev i {
  transform: rotate(-90deg);
}

.product-show-cover .product-img-show .show-next {
  right: 2.5%;
}

.product-show-cover .product-img-show .show-next i {
  transform: rotate(90deg);
}

.product-show-cover .product-img-show .close-btn {
  position: absolute;
  bottom: -100px;
  left: calc(50% - 20px);
  cursor: pointer;
}

.product-show-cover .product-img-show .close-btn i {
  font-size: 40px;
  color: #fff;
}

.product-pages {
  width: 100%;
  height: 340px;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  background-image: url("../img/72.png");
  display: flex;
  position: relative;
}

.product-pages .main-box {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding-top: 6.4%;
}

.product-pages .main {
  display: flex;
  align-items: flex-start;
}

.product-pages .pages {
  width: 50%;
}

.product-pages .pages .page {
  font-size: 16px;
  padding-bottom: 20px;
  display: block;
  color: #fff;
}

.product-pages .pages.prev-page .page {
  border-bottom: 1px solid rgba(255, 255, 255, 0.6);
}

.product-pages .pages.next-page {
  display: flex;
  justify-content: flex-end;
  flex-direction: column;
  text-align: right;
}

.product-pages .pages.next-page .page {
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.product-pages .pages .name {
  font-size: 32px;
  line-height: 32px;
  padding-top: 20px;
  font-family: 'Din';
  color: #fefefe;
}

.product-pages .pages .more {
  font-family: 'Din';
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 20px;
  display: block;
}

.product-pages .pages .more i {
  font-size: 16px;
  display: inline-block;
  margin-left: 10px;
  transform: rotate(90deg);
}

.footer {
  background-color: #222;
}

.footer .foot-top {
  padding: 40px 0 80px;
}

.footer .foot-top .main {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 0 6.5%;
}

.footer .foot-top .items-box .tt {
  font-size: 16px;
  color: #fff;
}

.footer .foot-top .items-box .items {
  margin-top: 20px;
}

.footer .foot-top .items-box .items .item {
  font-size: 14px;
  color: #999;
  line-height: 26px;
  display: block;
}

.footer .foot-bottom {
  border-top: 1px solid #333;
}

.footer .foot-bottom .main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6.5%;
}

.footer .foot-bottom .main a {
  color: #666;
  font-size: 14px;
  display: inline-block;
  padding: 20px 0;
}

.footer .foot-bottom .main a img {
  width: 18px;
  margin-right: 10px;
}

.footer .foot-bottom .main .right a {
  margin-left: 70px;
}

.footer .foot-bottom .main .right a:first-child {
  margin-left: 0;
}

.video-layer {
  background-color: #000 !important;
}

.video-layer .layui-layer-content {
  width: 1200px !important;
  height: 680px !important;
  overflow: hidden !important;
}

.video-layer video {
  width: 100% !important;
  height: 100% !important;
}