body {
  max-width: 1920px;
  margin: 0 auto;
}
.main {
  width: 1200px;
  margin: 0 auto;
}
.fl {
  float: left;
}
.fr {
  float: right;
}
.h3_title {
  font-size: 42px;
  font-weight: 600;
  color: #18202d;
}
.form {
  width: 100%;
  height: 504px;
  background: white;
  padding: 64px 38px;
  box-sizing: border-box;
}
.form .form_top {
  margin-bottom: 50px;
  overflow: hidden;
}
.form .form_top .item {
  float: left;
  margin-right: 70px;
  height: 40px;
  color: #5f5f65;
  margin-bottom: 20px;
}
.form .form_top .item:last-child {
  margin-right: 0;
}
.form .form_top .item > label {
  margin-right: 15px;
  font-size: 18px;
}
.form .form_top .item > input {
  width: 248px;
  height: 38px;
  border: 1px solid #dbe2eb;
  padding: 0 10px;
  box-sizing: border-box;
  line-height: 38px;
}
.form .explain {
  width: 100%;
}
.form .explain p {
  font-size: 18px;
  margin-bottom: 27px;
}
.form .explain .explain_detail {
  width: 100%;
  height: 106px;
  border: 1px solid #dbe2eb;
  padding: 10px;
  box-sizing: border-box;
  resize: none;
  outline: none;
}
.form .submit {
  width: 206px;
  height: 54px;
  background: #0b15e0;
  line-height: 54px;
  text-align: center;
  font-size: 22px;
  color: white;
  margin: 60px auto 0;
  border-radius: 10px;
  cursor: pointer;
}
.contact {
  height: 730px;
  width: 100%;
}
.contact .img_top {
  height: 550px;
  width: 100%;
  background: url('../images/concact.jpg') no-repeat;
  background-size: 100% 100%;
  position: relative;
}
.contact .img_top .main {
  position: absolute;
  left: 50%;
  top: 60px;
  margin-left: -600px;
  height: 620px;
}
.contact .img_top .main h3 {
  font-size: 40px;
  font-weight: 600;
  color: white;
  text-align: center;
  margin-bottom: 57px;
}
.contact .contact_bottom {
  width: 100%;
  height: 180px;
  background: #f8f7f7;
}
.banner {
  height: 595px;
  width: 100%;
  background-size: 100% 100%;
}
.banner .main {
  padding-top: 160px;
  box-sizing: border-box;
  color: white;
}
.banner .main .fl {
  width: 800px;
}
.banner .main .fl h3 {
  font-size: 65px;
  font-weight: 600;
}
.banner .main .fl .banner_p1 {
  font-size: 32px;
  margin: 35px 0;
}
.banner .main .fl .banner_p2 {
  font-size: 20px;
}
.fr_video {
  margin-top: 58px;
  width: 82px;
  height: 132px;
  text-align: center;
  font-size: 20px;
  cursor: pointer;
}
.fr_video img {
  width: 80px;
  height: 80px;
  display: block;
  margin: 0 auto;
  margin-bottom: 20px;
}
.move_img {
  width: 100%;
  height: 100%;
}
.commonUl {
  padding-top: 50px;
  padding-bottom: 80px;
  box-sizing: border-box;
  overflow: hidden;
}
.commonUl li {
  float: left;
  width: 220px;
  height: 314px;
  background: white;
  position: relative;
  margin-right: 106px;
  padding: 87px 20px 0;
  box-sizing: border-box;
  text-align: center;
  color: #15164f;
}
.commonUl li h2 {
  font-size: 23px;
  font-weight: 600;
}
.commonUl li .english_intro {
  height: 35px;
  position: relative;
  font-size: 13px;
  font-weight: 600;
  margin: 10px 0 25px;
}
.commonUl li .english_intro::before {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  margin-left: -17px;
  width: 34px;
  height: 2px;
  background: #3b7cff;
}
.commonUl li p {
  font-size: 16px;
  line-height: 30px;
  color: #5b5c77;
}
.commonUl li:last-child {
  margin-right: 0;
}
.commonUl li > img {
  position: absolute;
  left: 50%;
  top: -50px;
  margin-left: -53px;
  width: 106px;
  height: 106px;
  display: block;
}
.video_box {
  z-index: 999999999;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.4);
  display: none;
}
.video_box .video_content {
  position: absolute;
  width: 1200px;
  height: 600px;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  margin: auto;
}
.video_box .video_content .video_close {
  position: absolute;
  right: 16px;
  top: 0;
  width: 50px;
  height: 50px;
  background: rgba(204, 204, 204, 0.3);
  text-align: center;
  line-height: 50px;
  font-weight: 600;
  color: white;
  font-size: 30px;
  cursor: pointer;
}
.video_box .video_content .bannerVideo {
  width: 100%;
  height: 100%;
}
.banner_box {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  overflow: hidden;
}
.banner_box > img {
  width: 100%;
}
@keyframes rotate {
  0% {
    transform: rotate(0deg);
    transform-origin: 50% 50%;
  }
  50% {
    -webkit-transform: rotate(180deg);
    transform-origin: 50% 50%;
  }
  100% {
    transform: rotate(360deg);
    transform-origin: 50% 50%;
  }
}
body {
  color: #333333;
}
.ad-left {
  width: 170px;
  height: 100%;
  padding: 40px 20px;
  box-sizing: border-box;
  background: #025afa url("../images/factory_left.png") right bottom no-repeat;
  color: white;
}
.ad-left h2 {
  font-size: 16px;
}
.ad-left h1 {
  font-size: 22px;
  margin: 12px 0 21px;
}
.ad-left .factory-line {
  display: inline-block;
  width: 40px;
  height: 3px;
  background: white;
}
/*************展厅类型******/
.row.space8{ width:1200px; margin:0 auto; height:300px;}
.row .col-3 { width: 25%; float: left}
.home-build .tit {
    background-color: #fff;
    border: 1px solid #f4f4f4;
    padding: 5%; display:block;
    -webkit-transition: .4s ease-in-out;
    -ms-transition: .4s ease-in-out;
    transition: .4s ease-in-out;
}
.home-build .tit .icon {
    flex: 0 0 68px;
    height: 68px;
    position: relative;
}
.home-build  .tit .icon img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: contain;
    -webkit-transition: .4s ease-in-out;
    -ms-transition: .4s ease-in-out;
    transition: .4s ease-in-out;
}
.home-build  .tit .icon .img2 {
    opacity: 0;
}
.home-build  .tit .text {
    flex: 0 1 100%; text-align:center
}
.home-build  .tit .text h3 {
    position: relative;
    font-size: 32px;
    color: #E78014;
    line-height: 2;
}
.home-build  .tit .text p {
    margin-top: 14px;
    line-height: 24px;
    height: 96px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
    text-align: justify;
}
.home-build .tit:hover {
    background-color: #d20a2c;
    -webkit-transition: .4s ease-in-out;
    -ms-transition: .4s ease-in-out;
    transition: .4s ease-in-out;
}
.home-build .tit:hover .text p {
    color: #fff; 
    -webkit-transition: .4s ease-in-out;
    -ms-transition: .4s ease-in-out;
    transition: .4s ease-in-out;
}
.home-build .tit:hover .text h3 {
    color: #fff;
    -webkit-transition: .4s ease-in-out;
    -ms-transition: .4s ease-in-out;
    transition: .4s ease-in-out;
}
.home-build .tit:hover .icon .img2 {
    opacity: 1;
    -webkit-transition: .4s ease-in-out;
    -ms-transition: .4s ease-in-out;
    transition: .4s ease-in-out;
}
/******展厅类型**********/
.inner_wrap {
    background-color: #eef3f9; 
}
.inner_wrap ._tit {
    padding-top: 40px;
    height: 90px;
    line-height: 90px;
    font-size: 38px;
    color: #333;
    text-align: center;
    font-weight: normal;
}

.inner_wrap ._txt {
    padding-top: 20px;
    padding-bottom: 90px;
    line-height: 30px;
    color: #666;
    text-align: center;  width:800px; margin:0 auto;
}

.index-case {
  height: 910px;
  background: #ffffff;
  position: relative;
}
.index-case .case-top-main {
  position: relative;
  height: 100%;
}
.index-case .case-top-main .index-case-top {
  position: absolute;
  right: 0;
  top: 0;
  width: 100%;
  height: 485px;
  background: url("../images/case_menu_bg.png") no-repeat;
  background-size: 100% 100%;
  box-sizing: border-box;
  overflow: hidden;
}
.index-case .case-top-main .index-case-top .main {
  height: 100%;
  width: 1200px;
  box-sizing: border-box;
  padding-top: 60px;
  text-align: center;
  color: white;
}
.index-case .case-top-main .index-case-top .main h1 {
  font-size: 50px;
  margin-bottom: 40px;
}
.index-case .case-top-main .index-case-top .main p {
  font-size: 23px; color:#fff
}
.index-case .index-case-contain {
  position: absolute;
  left: 50%;
  top: 245px;
  z-index: 2;
  margin-left: -600px;
  height: 565px;
  width: 1200px;
}
.index-case .index-case-contain .case-number {
  position: absolute;
  right: -210px;
  top: 0;
  width: 187px;
  height: 547px;
}
.index-case .index-case-contain .case-number img {
  width: 100%;
}
.index-case .index-case-contain .case-menu {
  width: 200px;
  height: 100%;
}
.index-case .index-case-contain .case-menu .case-menu-item {
  height: calc(565px/6);
  padding-top: 41px;
  padding-left: 73px;
  box-sizing: border-box;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  background: #1a2d55;
  position: relative;
  cursor: pointer;
}
.index-case .index-case-contain .case-menu .case-menu-item.menu-item-select {
  background: #152545;
}
.index-case .index-case-contain .case-menu .case-menu-item::before {
  content: "";
  position: absolute;
  left: 40px;
  top: 41px;
  width: 25px;
  height: 26px;
  background: url("../images/case_icon1.png") no-repeat;
}
.index-case .index-case-contain .case-menu .case-menu-item:nth-child(1)::before {
  background-image: url("../images/case_icon1.png");
}
.index-case .index-case-contain .case-menu .case-menu-item:nth-child(2)::before {
  background-image: url("../images/case_icon2.png");
  top: 38px;
}
.index-case .index-case-contain .case-menu .case-menu-item:nth-child(3)::before {
  background-image: url("../images/case_icon3.png");
}
.index-case .index-case-contain .case-menu .case-menu-item:nth-child(4)::before {
  background-image: url("../images/case_icon4.png");
  top: 35px;
}
.index-case .index-case-contain .case-menu .case-menu-item:nth-child(5)::before {
  background-image: url("../images/case_icon5.png");
}
.index-case .index-case-contain .case-menu .case-menu-item:nth-child(6)::before {
  background-image: url("../images/case_icon6.png");
}
.index-case .index-case-contain .case-detail {
  width: 1000px;
  height: 100%;
}
.index-case .index-case-contain .case-detail .case-detail-item {
  width: 100%;
  height: 100%;
  display: none;
}
.index-case .index-case-contain .case-detail .case-detail-item.case-detail-select {
  display: block;
}
.index-case .index-case-contain .case-detail .case-detail-item .case-one {
  float: left;
  width: 50%;
  height: 50%;
  display: block;
  position: relative;
  cursor: pointer;
}
.index-case .index-case-contain .case-detail .case-detail-item .case-one:hover .case-one-bottom {
  opacity: 1;
}
.index-case .index-case-contain .case-detail .case-detail-item .case-one > img {
  width: 100%;
  height: 100%;
}
.index-case .index-case-contain .case-detail .case-detail-item .case-one .case-one-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 50px;
  width: 100%;
  padding: 0 50px 0 25px;
  box-sizing: border-box;
  color: white;
  line-height: 50px;
  background: rgba(0, 0, 0, 0.1);
  opacity: 0;
  transition: 0.3s;
}
.index-case .index-case-contain .case-detail .case-detail-item .case-one .case-one-bottom::after {
  content: "";
  position: absolute;
  right: 32px;
  top: 50%;
  margin-top: -13px;
  width: 26px;
  height: 26px;
  background: url("../images/case_video.png") no-repeat;
}


.index-visual {
  width: 100%;
  max-width: 1920px;
  height:700px;
  background: url("../images/visual.jpg") center no-repeat;
  background-size: 100% 100%;
  overflow: hidden;
  padding-top: 50px;
  box-sizing: border-box;
  color: white;
}
.index-visual .visual-title {
  text-align: center;
}
.index-visual .visual-title h1 {
  font-size: 50px;
}
.index-visual .visual-title p {
  font-size: 24px; color:#fff;
  margin: 28px 0;
}
.index-visual .visual-title .visual-line {
  display: inline-block;
  width: 56px;
  height: 3px;
  background: #025afa;
}
.index-visual .min-title {
  display: inline-block;
  position: relative;
  font-size: 20px;
  margin: 40px 0 60px; width:100%; text-align:center;
}
.index-visual .min-title::after {
  content: "";
  position: absolute;
  right: -25px;
  top: 5px;
  width: 13px;
  height: 8px;
  background: url("../images/arrow_bottom.png") no-repeat;
  background-size: 100% 100%;
}
.index-visual .visual-cards {
  width: 1200px;
  height: 324px;
  display: flex;
  justify-content: space-between;
}
.index-visual .visual-cards .cards-item {
  width: 282px;
  height: 100%;
  padding-top: 50px;
  box-sizing: border-box;
  text-align: center;
  color: white;
  background: url("../images/card_bg1.png") no-repeat;
  background-size: 100% 100%;
  transition: 0.5s;
}
.index-visual .visual-cards .cards-item > img {
  height: 111px;
  margin-bottom: 30px;
}
.index-visual .visual-cards .cards-item h1 {
  font-size: 24px;
  margin-bottom: 24px;
}
.index-visual .visual-cards .cards-item p {
  font-size: 17px;
  margin-bottom: 10px;
  opacity: 0.9; color:#fff;
}
.index-visual .visual-cards .cards-item:hover {
  background-image: url("../images/card_bg2.png") !important;
}
.index-serve {
  height: 867px;
}
.index-serve .main1 {
  height: 100%;
  padding-top: 80px;
  position: relative;
  box-sizing: border-box; width:1200px; margin:0 auto;
}
.index-serve .main1 .serve-title {
  height: 140px;
  padding: 20px 0 0 436px;
  box-sizing: border-box;
  background: url("../images/serve_title.png") left top no-repeat;
}
.index-serve .main1 .serve-title p {
  font-size: 17px;
  margin-bottom: 13px;
}
.index-serve .main1 .serve-img {
  position: relative;
  width: 100%;
  height: 422px;
}
.index-serve .main1 .serve-img > img {
  position: absolute;
  left: -100px;
  top: 0;
  height: 100%;
}