html,
body {
    position: relative;
    height: 100%;
}
a{
    text-decoration-line: none;
}
body {
    font-size: 14px;
    color: #000;
    margin: 0;
    padding: 0;
}
.mask{
    height: 100%;
    width: 100%;
    background:  rgba(0, 0, 0, .3);
    top:0;
    z-index: 1;
    position: absolute;
}
.right-mask50{
    height: 100%;
    width: 50%;
    background: linear-gradient(-90deg, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0) 100%);
    position: absolute;
    right: 0;
    z-index:3;
}

#nav-box-1{
    width: 100%;
    min-width: 1200px;
    display: flex;
    justify-content:center;
    align-items:center;
    position: absolute;
    padding-top: 34px;
    z-index: 999;
    background: linear-gradient(180deg, #000000 0%, rgba(0, 0, 0, 0) 100%);
}
.nav-box-2{
    width: 1200px;
    display: flex;
    justify-content:space-between;
}
.nav-box-2 .logo img{
    width: 154px;
    height: 54px;
}
.nav-right{
    display: flex;
    flex-direction: column;
    width: calc(100% - 154px);

}
.tel-lang-box{
    display: flex;
    justify-content:flex-end;
    font-size: 18px;
    font-weight: 400;
    color: #FDFDFD;
    line-height: 18px;
    margin-bottom: 25px;
}
.tel-lang-box .tel{
    background-repeat: no-repeat;
    padding-left: 24px;
    background-position:0 2px ;
    margin-right: 42px;
    font-weight: bold;
}
.lang-box{
    display: flex;
}
.lang-box .lang-splite{
    margin: 0 5px;
}
.lang-box a{
    font-size: 16px;
    color:#FDFDFD;
}
.nav-title-box{
    display: flex;
    justify-content:flex-end;
    padding-bottom: 30px;
    height: 18px;
}

.nav-title-box>div{

}
.nav li:hover>.plat {
    display: block;
    clear: both;
}
.navbar-nav>li {
    padding-bottom: 20px;
    padding-left: 40px;
    position: relative;
    overflow: unset;
    white-space: nowrap;
    float: left;
}
.navbar-nav.lang-box-en>li{
    padding-left: 30px;

}
.navbar-nav.lang-box-en>li>a{
    text-transform:Uppercase;
    white-space:nowrap;
    font-size: 17px;
}
.nav {
    padding: 0;
    margin: 0;
    list-style: none;
    /*display: flex;*/
}
.plat{
    top: 38px;
    left: 16px;
    display: none;
    position: absolute;
    min-width: 100%;
    white-space: nowrap;
    background: rgba(0, 0, 0, .5);
    box-shadow: 0px 1px 0px 0px rgb(7 3 4 / 20%);
    padding: 0;
    z-index: 100;
}

.nav li a {
    color: #FFF;
    font-size: 18px;
    line-height: 18px;
    padding:0px;
    padding-bottom:20px;
}

.plat li {
    list-style: none;
}

.plat li a {
    color: #FFF;
    padding: 14px 23px;
    display: inline-block;
    font-size: 16px;
}
.lang-box-en .plat li a{
    text-transform: Capitalize;
    white-space: nowrap;
}
a.active-nav,a.orange,.orange,.nav li:hover>a{
    color:#FF8921;
}
.swiper {
    width: 100%;
    height: 100%;
    min-width: 1200px;
}
.swiper-wrapper{
    transition-delay:.3s;
}
.content-box{
    z-index: 100;
    width: 100%;
    height: 100%;
    position: absolute;
    top:0;
    display: flex;
    justify-content:center;
    /*align-items:center;*/
}
.baner-title-box{
    display: flex;
}
.banner-title-line{
    margin:24px 10px;
    width: 86px;
    height: 1px;
    background: #FF8921;
}
.banner-title{
    font-size: 24px;
    font-weight: 300;
    color: #FFFFFF;
    line-height: 48px;
    text-transform: uppercase;
}
.bg{
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
}
.banner1-box,.banner2-box,.banner3-box,.banner4-box{
    width: 1200px;
    display: flex;
}
.yewu-box img:hover,.news-box img:hover{
    transform: scale(1.1);
    transition: 0.5s;
}
/*banner1*/
.banner1-box{
    justify-content:flex-end;
    align-items: center;
}
.banner1-desc-box img{
    width: 665px;
    margin-right: -208px;
    margin-left: -110px;
}
.banner1-box .banner1-desc{
    font-size: 50px;
    color: #FFFFFF;
    margin-bottom: 20px;
}
.banner1-box .banner1-desc-en{
    width: 484px;
    font-size: 38px;
    font-weight: bold;
    color: #FFFFFF;
    text-align: justify;
    margin-bottom: 10px;
}
/*banner2*/
.banner2-box{
    display: flex;
    align-items:center;
    flex-direction: column;
}
.banner2-title{
    margin-top:186px;
}
.yewu-box,.fuwu-box{
    width: 100%;
    margin-top: 72px;
    display: flex;
    justify-content:space-around;
}
.project{
    display: flex;
    flex-direction: column;
    align-items: center;
}
.yewu-box .project .img{
    width: 117px;
    height: 117px;
}
.yewu-box .project .desc{
    margin-top: 40px;
    font-size: 20px;
    font-weight: 300;
    color: #FFFFFF;
    line-height: 30px;
    text-align: center;
}
.fuwu-box{
    margin-top: 100px;
    justify-content:flex-start;
}
.fuwu-box .project:nth-child(2){
    margin-left: 260px;
}
.fuwu-box .project:nth-child(3){
    margin-left: 220px;
}
.fuwu-box .project:nth-child(4){
    margin-left: 265px;
}
.fuwu-box .project.lang-en:nth-child(2){
    margin-left: 196px;
}
.fuwu-box .project.lang-en:nth-child(3){
    margin-left: 122px;
}
.fuwu-box .project.lang-en:nth-child(4){
    margin-left: 116px;
}
.fuwu-box  .img{
    display: flex;
    justify-content: center;
    height: 62px;
    align-items: flex-end;
}
.fuwu-box .project .tips{
    font-size: 16px;
    color: #FFFFFF;
    text-align: center;
    margin-top: 10px;
}
.fuwu-box .project .desc,.fuwu-box .project .desc-en{
    margin-top: 25px;
    font-size: 28px;
    font-weight: 300;
    color: #FFFFFF;
    line-height: 30px;
    text-align: center;
}
.fuwu-box .project .desc-en{
    width: 180px;
}
/*banner3*/
.banner3-box{
    display: flex;
    align-items:center;
    flex-direction: column;
}
.banner3-title{
    margin-top:250px;
    width: 100%;
    justify-content: center;
    position: relative;
}
.banner3-title .news-jump-btn{
    position: absolute;
    right: 0;
    top: 17px;
}
.news-box{
    width: 100%;
    margin-top: 66px;
    display: flex;
    justify-content: space-between;
}
.news-box .news-info{
    display: flex;
    flex-direction: column;
    width: 348px;
}
.news-info .img,.news-info img{
    width: 348px;
    height: 236px;
}
.news-info .desc-box{
    margin-top: 45px;
    display: flex;
    flex-direction: column;
}
.news-info .desc-box .date-box{
    display: flex;
    width: 100%;
    border-bottom: 1px solid #FF8921;
    color: #FFFFFF;
    padding-bottom: 10px;
}
.date-box .date,.desc-box .title{
    font-size: 18px;

}
.date-box .year{
    margin-left: 10px;
    font-size: 14px;
    line-height: 24px;
    font-weight: 300;
}
.desc-box .title{
    margin-top: 16px;

}
.desc-box .title a{
    font-size: 18px;
    color: #FFFFFF;
}
/*banner4*/
.banner4-box{
    display: flex;
    align-items:center;
    flex-direction: column;
}
.banner4-title{
    margin-top:254px;
}
.cooperate-box{
    margin-top: 55px;
    width: 100%;
    display: flex;
    flex-direction: column;
}

.cooperate-box div{
    display: flex;
    justify-content: space-around;
    margin-bottom: 32px;
}
.cooperate-box div img{
    width: 158px;
    height: 84px;
}

/*footer*/
.footer-box{
    position: absolute;
    bottom: 0;
    width: 100%;
    background: rgba(0,0,0,.7);
    display: flex;
    justify-content: center;
    height: 86px;
    z-index: 100;
    min-width: 1200px;
}
.footer{
    width: 1200px;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.copyright-box{
    display: flex;
    color:#878787;
}
.copyright{
    font-size: 14px;
    margin-right: 15px;
}
.icp{
    font-size: 12px;
}
.icp .beian-icon{
    height: 14px;
    width: 14px;
    margin-right: 5px;
}
.follow{
    position: relative;
    padding: 13px 25px;
    border: 1px solid #878787;
    text-align: center;
    font-size: 18px;
    color: #878787;
}
.follow:hover{
    background: rgba(255,255,255,.1);
}
.follow .follow-img{
    position: absolute;
    top: -183px;
    right: -18px;
    width: 160px;
    height: 168px;
}
.follow.lang-box-en .follow-img{
    right: 40px;
}
/*分页*/
.swiper-pagination-vertical.swiper-pagination-bullets {
    display:flex;
    flex-direction:column;
    position:absolute;
    top:50%;
    right:52px;
    -webkit-transform:translate3d(0, -50%, 0);
    transform:translate3d(0, -50%, 0);
    will-change:transform;
    -webkit-backface-visibility:hidden;
    backface-visibility:hidden;
    z-index:5;
}
.swiper-pagination-vertical.swiper-pagination-bullets span {
    cursor:pointer;
    width:4px;
    height:4px;
    background:rgba(255, 255, 255, 0.5);
    border-radius:50%;
    margin-bottom:24px;
    position:relative;
    will-change:opacity, transform;
    -webkit-backface-visibility:hidden;
    backface-visibility:hidden;
    transition:background .3s ease-in-out;
}
.swiper-pagination-vertical.swiper-pagination-bullets span:before {
    content:'';
    position:absolute;
    width:400%;
    height:400%;
    top:-150%;
    left:-150%
}
.swiper-pagination-vertical.swiper-pagination-bullets span:after {
    content:'';
    position:absolute;
    width:100%;
    height:100%;
    top:0;
    left:0;
    border-radius:50%;
    -webkit-transform:scale(0);
    transform:scale(0);
    background:#fff;
    transition:-webkit-transform .4s cubic-bezier(.2, .3, 0, .85) 1s;
    transition:transform .4s cubic-bezier(.2, .3, 0, .85) 1s;
    transition:transform .4s cubic-bezier(.2, .3, 0, .85) 1s, -webkit-transform .4s cubic-bezier(.2, .3, 0, .85) 1s
}
.swiper-pagination-vertical.swiper-pagination-bullets span:last-child {
    margin-bottom:0
}
.swiper-pagination-vertical.swiper-pagination-bullets span:hover {
    background:rgba(255, 255, 255, 0.8)
}
.swiper-pagination-vertical.swiper-pagination-bullets span.swiper-pagination-bullet-active {
    pointer-events:none;
}
.swiper-pagination-vertical.swiper-pagination-bullets span.swiper-pagination-bullet-active:after {
    -webkit-transform:scale(1);
    transform:scale(1)
}
.swiper-pagination-vertical.swiper-pagination-bullets span.swiper-pagination-bullet-active svg {
    -webkit-transform:translate3d(-50%, -50%, 0) rotate(180deg);
    transform:translate3d(-50%, -50%, 0) rotate(180deg);
    transition:.8s cubic-bezier(.6, .3, .8, .5) .25s;
}
.swiper-pagination-vertical.swiper-pagination-bullets span.swiper-pagination-bullet-active svg circle {
    stroke-dashoffset:0;
    transition:.8s cubic-bezier(.6, .3, .8, .5) .25s
}
.swiper-pagination-vertical.swiper-pagination-bullets span svg {
    opacity:.45;
    position:absolute;
    top:50%;
    left:50%;
    -webkit-transform:translate3d(-50%, -50%, 0) rotate(0);
    transform:translate3d(-50%, -50%, 0) rotate(0);
    pointer-events:none;
    transition:.8s cubic-bezier(.6, .3, .8, .5);
}
.swiper-pagination-vertical.swiper-pagination-bullets span svg circle {
    transition:.8s cubic-bezier(.6, .3, .8, .5);
    stroke-dashoffset:70;
    stroke-dasharray:70
}
.swiper-pagination-vertical.swiper-pagination-bullets .swiper-pagination-bullet.hide {
    pointer-events:none;
}
.swiper-pagination-vertical.swiper-pagination-bullets .swiper-pagination-bullet.hide span {
    opacity:0;
    -webkit-transform:translateX(80px);
    transform:translateX(80px)
}
.swiper-pagination-vertical.swiper-pagination-bullets .swiper-pagination-bullet.hide span:nth-child(1) {
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .03s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .03s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .03s, transform .5s cubic-bezier(.2, .3, 0, .85) .03s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .03s, transform .5s cubic-bezier(.2, .3, 0, .85) .03s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .03s
}
.swiper-pagination-vertical.swiper-pagination-bullets .swiper-pagination-bullet.hide span:nth-child(2) {
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .06s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .06s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .06s, transform .5s cubic-bezier(.2, .3, 0, .85) .06s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .06s, transform .5s cubic-bezier(.2, .3, 0, .85) .06s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .06s
}
.swiper-pagination-vertical.swiper-pagination-bullets .swiper-pagination-bullet.hide span:nth-child(3) {
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .09s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .09s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .09s, transform .5s cubic-bezier(.2, .3, 0, .85) .09s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .09s, transform .5s cubic-bezier(.2, .3, 0, .85) .09s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .09s
}
.swiper-pagination-vertical.swiper-pagination-bullets .swiper-pagination-bullet.hide span:nth-child(4) {
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .12s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .12s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .12s, transform .5s cubic-bezier(.2, .3, 0, .85) .12s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .12s, transform .5s cubic-bezier(.2, .3, 0, .85) .12s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .12s
}
.swiper-pagination-vertical.swiper-pagination-bullets .swiper-pagination-bullet.hide span:nth-child(5) {
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .15s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .15s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .15s, transform .5s cubic-bezier(.2, .3, 0, .85) .15s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .15s, transform .5s cubic-bezier(.2, .3, 0, .85) .15s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .15s
}
.swiper-pagination-vertical.swiper-pagination-bullets .swiper-pagination-bullet.hide span:nth-child(6) {
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .18s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .18s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .18s, transform .5s cubic-bezier(.2, .3, 0, .85) .18s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .18s, transform .5s cubic-bezier(.2, .3, 0, .85) .18s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .18s
}
.swiper-pagination-vertical.swiper-pagination-bullets .swiper-pagination-bullet.hide span:nth-child(7) {
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .21s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .21s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .21s, transform .5s cubic-bezier(.2, .3, 0, .85) .21s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .21s, transform .5s cubic-bezier(.2, .3, 0, .85) .21s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .21s
}
.swiper-pagination-vertical.swiper-pagination-bullets .swiper-pagination-bullet.hide span:nth-child(8) {
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .24s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .24s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .24s, transform .5s cubic-bezier(.2, .3, 0, .85) .24s;
    transition:background .2s ease-in-out, opacity .5s cubic-bezier(.2, .3, 0, .85) .24s, transform .5s cubic-bezier(.2, .3, 0, .85) .24s, -webkit-transform .5s cubic-bezier(.2, .3, 0, .85) .24s
}
.swiper-pagination-vertical.swiper-pagination-bullets {
    display:flex;
    flex-direction:column;
}
.swiper-pagination-vertical.swiper-pagination-bullets span {
    margin-bottom:20px !important;
    display:none;
}
.swiper-pagination-vertical.swiper-pagination-bullets span:first-child {
    display:block
}
/* 下一页*/
.button-next {
    position: absolute;
    bottom: 95px;
    left: 50%;
    z-index: 99;
    cursor: pointer;
}
.button-next.swiper-button-disabled{
    display: none;
}
.button-next img{
    width: 24px;
    height: 14px;
    animation: bounce2 3s linear 0s infinite;
    -webkit-animation: bounce2 3s linear 0s infinite;
}

@keyframes bounce2 {
    0%, 100%, 20%, 53%, 80% {
        -webkit-transition-timing-function:cubic-bezier(0.215, .61, .355, 1);
        transition-timing-function:cubic-bezier(0.215, .61, .355, 1);
        -webkit-transform:translate3d(0, 0, 0);
        -ms-transform:translate3d(0, 0, 0);
        transform:translate3d(0, 0, 0)
    }
    40%, 43% {
        -webkit-transition-timing-function:cubic-bezier(0.755, .050, .855, .060);
        transition-timing-function:cubic-bezier(0.755, .050, .855, .060);
        -webkit-transform:translate3d(0, -30px, 0);
        -ms-transform:translate3d(0, -30px, 0);
        transform:translate3d(0, -30px, 0)
    }
    70% {
        -webkit-transition-timing-function:cubic-bezier(0.755, .050, .855, .060);
        transition-timing-function:cubic-bezier(0.755, .050, .855, .060);
        -webkit-transform:translate3d(0, -15px, 0);
        -ms-transform:translate3d(0, -15px, 0);
        transform:translate3d(0, -15px, 0)
    }
    90% {
        -webkit-transform:translate3d(0, -4px, 0);
        -ms-transform:translate3d(0, -4px, 0);
        transform:translate3d(0, -4px, 0)
    }
}