@charset "utf-8";

@import url(public.css);

/* header */
.header{width: 100%; height: 80px; position: fixed; top: 0; left: 0; z-index: 3;}
.header-content{width: 100%; position: relative; height: 100%; background-color: rgba(255,255,255,.4);}
.header .wrap{width: 100%; height: 100%; display: flex; justify-content: space-between; align-items: center;}
.header .logo{overflow: hidden; display: flex; height: 100%; align-items: center;}
.header .logo img{max-width: 100%; max-height: 100%; width: 189px; height: auto;}
/* menu */
.header-menu{position:absolute; top: 0; bottom: 0; right: 15px; margin: auto; z-index: 6; padding: 0; height: 20px; display:block; cursor:pointer;}
.header-menu .icon-bar{background:#333; width:30px; height: 3px; display: block;}
.header-menu .icon-bar:nth-child(2){margin: 5px 0;}
.header-menu .icon-bar:nth-child(3){width: 22px;}
.header-menu.on .icon-bar:nth-child(1){margin-top: 8px; transform:rotateZ(45deg);}
.header-menu.on .icon-bar:nth-child(2){opacity:0;}
.header-menu.on .icon-bar:nth-child(3){width: 30px; top:50%; position:absolute; transform:translate(0,-50%) rotateZ(135deg);}
/* nav */
.header-nav{position: relative;}
.header-nav .nav{max-width: 1200px; margin: 0 auto;}
.header-nav .nav-list{width: 100%;}
.header-nav .nav-list>li{float: left; position: relative; text-align: center; margin-left: 15px;}
.header-nav .nav-list>li>a{display: block; width: 125px; height: 30px; line-height: 30px; text-align: center;}
.header-nav .nav-list>li>a span{font-size: 16px; color: #1f1f1f; position: absolute; top: 0; left: 0; width: 100%; height: 100%;}
.header-nav .nav-list>li>a .CN{opacity: 1;}
.header-nav .nav-list>li>a .EN{opacity: 0; text-transform: uppercase;}
.header-nav .nav-list>li:hover>a{background-color: #1f1f1f;}
.header-nav .nav-list>li:hover>a .CN{opacity: 0;}
.header-nav .nav-list>li:hover>a .EN{opacity: 1; color: #fff;}
.header-nav .nav-list>li.on>a{background-color: #1f1f1f;}
.header-nav .nav-list>li.on>a .CN{opacity: 0;}
.header-nav .nav-list>li.on>a .EN{opacity: 1; color: #fff;}
.header-nav .nav-list>li>i{display: none;}
.header-nav .nav-down{display: none; position: absolute; top: 100%; left: 50%; min-width: 100%; transform: translateX(-50%); z-index: 4; background-color: #fff;}
.header-nav .nav-down li{text-align: center;}
.header-nav .nav-down li a{line-height:40px; font-size: 15px; color: var(--main-font-color); display: block; padding: 0 5px;  white-space: nowrap;}
.header-nav .nav-down li a:hover{color: var(--main-color);}
.header-tel{float: left;}
.header-tel .tel{font-size: 18px; color: var(--main-color); padding-left: 35px; line-height: 40px; background: url(../images/header_icon1.png) no-repeat left center;}
.header.small{position: fixed; left: 0; top: 0; z-index: 6; animation: nav_small 0.5s; box-shadow: 0 0 20px #ccc;}
@keyframes nav_small {
    from {top: -50px;}
    to {top: 0;}
}
@-webkit-keyframes nav_small {
    from {top: -50px;}
    to {top: 0;}
}
/* banner */
.banner{position: relative; font-size: 0;}
.banner img{width: 100%; height: auto;}
.banner .swiper-pagination-bullet{opacity: 1; background-color: #fff;}
.banner .swiper-pagination-bullet-active{background-color: var(--main-color); opacity: 1;}
.banner .banner-prev, .banner .banner-next{position: absolute; top: 0; bottom: 0; margin: auto; width: 33px; height: 66px; z-index: 2; line-height: 66px; text-align: center; font-size: 30px; color: #fff;}
.banner .banner-prev{left: -10%;}
.banner .banner-next{right: -10%;}
.banner:hover .banner-prev{left: 2%;}
.banner:hover .banner-next{right: 2%;}
/*  */
.banner-index img{height: calc(100vh - 51px); object-fit: cover;}
.banner-contact img{height: calc(100vh - 51px); object-fit: cover;}
.banner-index .mask{position: absolute; bottom: 5%; left: 0; z-index: 2; width: 100%;}

.advantage-list{width: 100%; display: flex; justify-content: space-between;}
.advantage-list li{width: 23%; float: left; background-color: rgba(255,255,255,.8); padding: 15px 0; text-align: center;}
.advantage-list .text1{font-size: 16px; color: #1f1f1f;}
.advantage-list .text1 span{font-size: 36px; color: #1f1f1f; font-weight: bold;}
.advantage-list .text2{font-size: 18px; color: #1f1f1f;}
.advantage-list li:hover {transform: translateY(-10px);}
/*  */
.footer{text-align: center; padding: 15px 0; background-color: #fff; border-top: 1px solid #cccccc;}
.footer .copyright{font-size: 14px; color: #666; line-height: 20px;}
/*  */
.inner-page{width: 100%; overflow: hidden; min-height: 400px;}
.sideBar{margin-bottom: 35px; padding: 30px 0 15px 0; border-bottom: 1px solid #e6e6e6;}
.sideBar .list{overflow: hidden;}
.sideBar .list li{float: left; margin: 0 15px 15px 0;}
.sideBar .list li a{display: inline-block; width: 195px; height: 40px; line-height: 38px; text-align: center; border: 1px solid #1f1f1f; font-size: 16px; color: #1f1f1f;}
.sideBar .list li a:hover{background-color: #1f1f1f; color: #fff;}
.sideBar .list li.on a{background-color: #1f1f1f; color: #fff;}
/*  */
.service-page{width: 100%;}
.service-page-list{width: 100%; overflow: hidden;}
.service-page-list li{padding: 40px 0;}
.service-page-list .item{width: 100%; overflow: hidden; display: flex;}
.service-page-list .item .img-box{width: 45%; position: relative; overflow: hidden;}
.service-page-list .item .img-box::before{content: ""; display: block; padding-top: 55%;}
.service-page-list .item .video-box{width: 45%; position: relative; overflow: hidden;}
.service-page-list .item .video-box::before{content: ""; display: block; padding-top: 55%;}
.service-page-list .item .content{flex: 1; padding: 0 0 0 30px;}
.service-page-list .item .title{font-size: 24px; color: #1f1f1f; margin-bottom: 20px;}
.service-page-list .item .text{font-size: 16px; color: #6b6b6b; line-height: 30px;}
.service-page-list .item:hover .img-box img{transform: scale(1.1);}
.service-page-list li:nth-child(even){background-color: #f0f0f0;}
.service-page-list li:nth-child(even) .item{flex-direction: row-reverse;}
.service-page-list li:nth-child(even) .item .content{padding: 0 30px 0 0;}
.service-page-list li:nth-child(1){padding: 0 0 40px 0;}
/*  */
.case-page{padding: 30px;}
.case-list-page{width: calc(100% + 20px);}
.case-list-page li{width: calc(100% / 3 - 20px); float: left; margin: 0 20px 20px 0;}
.case-list-page .item{width: 100%; overflow: hidden;}
.case-list-page .item .video-box{position: relative; overflow: hidden;}
.case-list-page .item .video-box::before{content: ""; display: block; padding-top: 59%;}
.case-list-page .item .video-box .video{position: absolute; top: 0; left: 0; bottom: 0; right: 0; margin: auto; width: 100%; height: 100%; }
.case-list-page .item .video-box .icon{position: absolute; top: 0; left: 0; right: 0; bottom: 0; margin: auto; width: 60px; height: 60px; background: url(../images/video_icon.png) no-repeat center center; background-size: 100% 100%;}
.case-list-page .item .text{font-size: 18px; color: #1f1f1f; line-height: 20px; margin-top: 10px; text-align: center;}
.case-list-page .item:hover .video-box .video{transform: scale(1.1);}
/*  */
.banner-contact{position: relative;}
.banner-contact .mask{position: absolute; top: 45%; left: 52%; z-index: 2;}
.banner-contact .mask .text{font-size: 16px; color: #000; line-height: 40px; padding-left: 35px; background-repeat: no-repeat; background-position: left center;}
.banner-contact .mask .text:nth-child(1){background-image: url(../images/contact_icon1.png);}
.banner-contact .mask .text:nth-child(2){background-image: url(../images/contact_icon2.png);}
.banner-contact .mask .text:nth-child(3){background-image: url(../images/contact_icon3.png);}
.banner-contact .mask2{position: absolute; bottom: 5%; left: 0; z-index: 2; width: 100%;}
.banner-contact .mask2 ul{display: flex; justify-content: space-between; width: 60%; margin: 0 auto;}
.banner-contact .mask2 ul li{float: left;}
.banner-contact .mask2 .icon{position: relative; overflow: hidden; display: block; width: 100px; height: 40px;}
.banner-contact .mask2 .icon img{position: absolute; top: 0; left: 0; bottom: 0; right: 0; margin: auto; max-width: 100%; max-height: 100%; object-fit: contain;}

/*  */
.case-details{width: 100%; overflow: hidden;}
.case-details .wrap1{padding: 40px 0; background-color: #fff;}
.case-details .img-box{text-align: center; overflow: hidden;}
.case-details .img-box img{width: 100%; height: auto;}
.case-details .video-box{text-align: center; overflow: hidden;}
.case-details .video-box video{width: 100%; height: auto; max-height:800px;}
.case-details .content{margin-top: 20px; text-align: center;}
.case-details .content .title{font-size: 24px; color: #1f1f1f; margin-bottom: 20px;}
.case-details .content .text{font-size: 16px; color: #585858; line-height: 2; text-align:left;}
/*  */
.case-details .wrap2{background-color: #f0f0f0; padding: 40px 0;}
.case-details{width: 100%; overflow: hidden;}
.case-details #certify {position: relative; width: 100%; overflow: hidden; padding-bottom: 30px;}
.case-details #certify  .swiper-slide {width: 70%;}
.case-details #certify .swiper-pagination {width: 100%; bottom: 0;}
.case-details #certify .swiper-pagination-bullets .swiper-pagination-bullet {margin: 0 5px;  background-color: #c9c9c9; width: 10px; height: 10px; opacity: 1;}
.case-details #certify .swiper-pagination-bullets .swiper-pagination-bullet-active {background-color: #444444;}
.case-details .img-box2{position: relative; overflow: hidden;}
.case-details .img-box2::before{content: ""; display: block; padding-top: 55%;}
.news-details{width: 100%; overflow: hidden; margin:50px auto;}
.news-details .title{text-align: center; border-bottom: 1px dotted #ddd; padding-bottom: 20px; margin-bottom: 20px;}
.news-details .title .title1{font-size: 18px; color: #333; line-height:2; font-weight:bold;}
.news-details .title .title2{font-size: 14px; color: #999; margin-top: 10px;}
.news-details .img-box{text-align: center; overflow: hidden;}
.news-details .img-box img{max-width: 100%; height: auto; display: inline-block;}
.news-details .txtbox{font-size: 14px; color: #333; line-height: 25px; margin-top: 20px;}
.news-details .txtbox img{ max-width:100% !important; height:auto !important;}


@media (max-width: 1199px){
    .header-nav .nav-list>li{margin-left: 5px;}
    .advantage-list .text1{font-size: 14px;}
    .advantage-list .text1 span{font-size: 28px;}
    .advantage-list .text2{font-size: 14px;}
    .service-page-list .item .title{font-size: 20px; margin-bottom: 10px;}
    .service-page-list .item .text{font-size: 14px; line-height: 25px;}
    /*  */
    .case-page{padding: 20px;}
	.case-details .video-box{text-align: center; overflow: hidden;}
	.case-details .video-box video{width: 100%; height: auto; max-height:400px;}

}

@media (min-width: 991px){
    .header .header-nav{display: block !important;}
	.case-details .video-box{text-align: center; overflow: hidden;}
}
@media (max-width: 991px){
    .case-details .video-box video{width: 100%; height: auto; max-height:300px;}
}

@media (max-width: 991px){
    .header{height: 70px;}
    .header-nav{position: fixed; top: 0; left: 0; z-index: 5; width: 100%; height: 100%; background-color: rgba(0,0,0,.6); display: none;}
    .header-nav .nav{position: absolute; top: 0; right: 0; width: 60%; height: 100%; background-color: #fff; transform: translateX(100%); transition: all .2s;}
    .header-nav .nav-list{padding: 80px 20px 0 20px;}
    .header-nav .nav-list>li{width: 100%; text-align: left; margin: 0;}
    .header-nav .nav-list>li::before{display: none;}
    .header-nav .nav-list>li>a{width: 100%; line-height: 40px; height: 40px; text-align: left;}
    .header-nav .nav-list>li>a span{left: 15px;}
    .header-nav .nav-list>li>i{display: block; position: absolute; top: 15px; right: 0; width: 20px; height: 20px; line-height: 18px; text-align: center; font-size: 14px;}
    .header-nav .nav.act{transform: translateX(0);}
    .header-nav .nav-down{display: none; position: static; width: 100%; transform: translateX(0); margin-bottom: 15px;}
    .header-nav .nav-down li{text-align: left;}
    .header-nav .nav-down li a{font-size: 12px; line-height: 30px; padding: 0 5px 0 20px;}
    .banner .banner-prev{left: 2%;}
    .banner .banner-next{right: 2%;}
    .banner-index img{height: calc(100vh - 180px);}
    .banner-contact img{height: calc(100vh - 180px);}
    .banner-index .mask{bottom: auto; top: 50%; transform: translateY(-50%);}
    /*  */
    .sideBar{padding: 20px 0 15px 0; margin-bottom: 25px;}
    .sideBar .list li{margin: 0 5px 5px 0;}
    .sideBar .list li a{width: 160px; height: 32px; line-height: 30px; font-size: 14px;}
    .advantage-list .text1 span{font-size: 24px;}
    .service-page-list .item .content{padding: 0 0 0 15px;}
    .service-page-list .item .title{font-size: 16px;}
    .case-page{padding: 10px;}
    .case-list-page{width: calc(100% + 10px);}
    .case-list-page li{width: calc(100% / 3 - 10px); margin: 0 10px 10px 0;}
    .case-list-page .item .video-box .icon{width: 40px; height: 40px;}
    .case-list-page .item .text{font-size: 14px;}
    .banner-contact .mask .text{font-size: 14px; line-height: 30px;}
    .case-details .content .title{font-size: 20px; margin-bottom: 10px;}
    .case-details .content .text{font-size: 14px;}
    .case-details .wrap1{padding: 30px 0;}
    .case-details .wrap2{padding: 30px 0;}
	.news-details{width: 100%; overflow: hidden; margin:40px auto;}
	.news-details .title .title1{font-size: 16px;}
	.case-details .video-box{text-align: center; overflow: hidden;}
	.case-details .video-box video{width: 100%; height: auto; max-height:300px;}
}

@media (max-width: 767px){
    .header-content{height: 60px;}
    /* .banner-index img{height: calc(100vh - 170px);}
    .banner-contact img{height: calc(100vh - 170px);} */
    .advantage-list{flex-wrap: wrap; width: calc(100% + 10px);}
    .advantage-list li{width: calc(50% - 10px); margin: 0 10px 10px 0;}
    .advantage-list li{padding: 10px 0; margin-bottom: 10px;}
    .advantage-list .text1{line-height: 1; font-size: 12px;}
    .advantage-list .text1 span{font-size: 18px;}
    .advantage-list .text2{line-height: 1; margin-top: 5px;}
    .footer{padding: 10px 0;}
    /*  */
    .sideBar{margin-bottom: 20px;}
    .sideBar .list li a{width: 120px; font-size: 14px; height: 30px; line-height: 28px;}
    .service-page-list li{padding: 15px 0;}
    .service-page-list .item{display: block;}
    .service-page-list .item .img-box{width: 100%;}
    .service-page-list .item .content{width: 100%; padding: 10px 0 0 0;}
    .service-page-list .item .title{font-size: 14px; padding-top:10px; line-height:1.5;}
    .service-page-list .item .text{font-size: 12px; line-height: 20px; height: 80px; overflow: hidden;}
    .service-page-list li:nth-child(1){padding: 0 0 15px 0;}
    .case-list-page li{width: calc(100% / 2 - 10px);}
    .case-list-page .item .text{ line-height: 20px; margin-top: 5px;}
    .banner-contact .mask{left: 25%;}
    .banner-contact .mask .text{font-size: 12px; line-height: 25px;}
    .case-details .wrap1{padding: 20px 0;}
    .case-details .content{margin-top: 10px;}
    .case-details .content .title{font-size: 16px;}
    .case-details .content .text{font-size: 12px;}
    .case-details .wrap2{padding: 20px 0;}
    .case-details #certify .swiper-slide{width: 90%;}
}