body{
    width: 100%;
    height: 100%;
    background: black;
}
.navigation{
    height: 70px;
    background: none;
    position: fixed;
    top: 0;
    left: 50%;
    width: 1200px;
    margin-left: -600px;
    z-index: 100;
    font-size: 16px;
    display: flex;
    align-items: center;
}
.logo{
    float: left;
    width: 150px;
    margin-right: 50px;
}
.top-menu{
    float: left;
    line-height: 30px;
}
.navigation a {
    margin-left: 0px;
    color: white;
    text-decoration: none;
}
.top-menu .nav-link{
    margin-right: 40px;
}
.navigation a:hover{
    text-decoration: none;
    color: #FFAF00;
}
#loginBtn:hover{
    background-color: #FFAE20;
    color: #fff;
}
#applyBtn:hover{
    background-color: #ff5207;
    color: #fff;
}
.nav-action{
    /* line-height: 30px; */
    /* margin-top: 20px; */
    float: left;
    margin-left: 50px;
    color: white;
}
.nav-action a{
    display: inline-block;
}
.nav-action .nav-phone{
    line-height: 30px;
}
.nav-btn{
    border-radius:20px;
}

#loginBtn{
    border: 1px solid #FFAE20;
    margin-left: 20px;
    margin-right: 10px;
    width: 100px;
    height: 40px;
    line-height: 40px;
    font-size: 16px;
    text-align: center;
    margin-top: -5px;
}
#applyBtn{
    width: 140px;
    height: 40px;
    line-height: 40px;
    font-size: 16px;
    text-align: center;
    background: #FFAE20;
}
.banner{
    width: 100%;
    height: 640px;
    margin-bottom: 120px;
}
.banner-mask{
    width: 100%;
    height: 640px;
    position: absolute;
    background-color: #000;
    opacity: 0.6;
    z-index: 90;
}
.video-back{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    z-index: 100;
    color: #fff;
    font-size: 26px;
    text-align: center;
}
.video-back-btn{
    display: block;
    margin: 0 auto;
    width: 128px;
    height: 50px;
    background-image: url("https://stc-op.fenbeitong.com/img_op/img/event717/video_back_btn.png");
}
.swiper-pagination{
    z-index: 100;
}
.swiper-pagination-bullet {
    width: 15px;
    height: 15px;
    text-align: center;
    color: #000;
    opacity: 1;
    background: #7D7D7D;
}

.swiper-pagination-bullet-active {
    color: #fff;
    background: #FF5207;
}

.block{
    width: 1200px;
    margin: 0 auto;
    margin-bottom: 110px;
}
.block .title{
    margin-bottom: 50px;
    text-align: center;
    font-size: 22px;
    font-weight: 700;
    color: #FF5207;
}
.block .detail{
    color: white;
    font-size: 22px;
}
.back .detail{
    background: white;
    color:black;
    padding: 20px;
    height: 442px;
}
.back-video{
    float: left;
    width: 714px;
    height: 402px;
}
#back-video-player{
    width: 714px;
    height: 402px;
}

.back-content{
    padding: 10px 0;
    margin-left: 60px;
    float: left;
    width: 350px;
}

.back-content ul li{
    font-size: 18px;
    margin-bottom: 47px;
    color: #000;
    cursor: pointer;
}
.back-content ul li.active{
    color: #ff5207 ;
}

.back-content ul li.active::before{
    content: "";
    display: block;
    position: absolute;
    width: 0;
    height: 0;
    margin-left: -20px;
    border-width: 12px;
    border-style: solid;
    border-color:     transparent transparent transparent #FF5207;
}
.guest .detail .swiper2{
    padding-bottom: 40px;
}
.guest-item{
  display: flex;
}
.guest-item li{
    position: relative;
    width: 288px;
    height: 400px;
    padding: 0 8px;
    overflow: hidden;
    cursor: pointer;
    display: inline-block;
}
.guest-item img{
    width: 288px;
    height: 400px;
}
.guest-item a{
    position: absolute;
    margin-top: 390px;
    top: -54px;
    height: 64px;
    width: 288px;
    overflow: hidden;
    padding: 13px;
    background: #FF5207;
    color: white;
    opacity: 0.77;
    transition: top  0.5s,height  0.5s;
    z-index: 100;
}
.guest-item li:hover a{
    top:-154px;
    height:164px;
    color: white;
    text-decoration: none;
    /* height:154px; */
}
.guest-content-title{
    margin-bottom: 12px;
    font-size: 20px;
}

.guest-content-title span{
    font-weight: 700;
    font-size: 26px;
    margin-right: 10px;
}
.guest-content-detail{
    font-size: 16px;
}

.news{
    margin-bottom: 60px;
}
.news .detail{
    height: 500px;
    font-size: 18px;
}

.news .detail ul li{
    width: 50%;
    float: left;
    height: 21px;
    margin-bottom: 28px;
    line-height: 21px;
    overflow: hidden;
}
.news .detail li::before{
    content: "";
    position: absolute;
    margin-left:-4px;
    margin-top:6px;
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #FF5207;
    border-radius: 4px;
    vertical-align: middle;
}

.news a{
    display: inline-block;
    color: white;
    width: 580px;
    padding-right: 40px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.news a:hover{
    color: #ff5207;
}
.friend{
    margin-bottom: 60px;
    width: 1224px;
}
.friend .title{
    margin-bottom: 40px;
}
.friend ul{
    font-size: 0px;
}
.friend li{
    display: inline-block;
    width: 180px;
    height: 72px;
    margin: 0 12px 20px 12px;
}
/* .special{
    margin-top:
} */
.special .detail{
    width: 816px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
}
.contact{
    height: 300px;
    margin-bottom: 200px;
}
.contact .mail{
    background: #343434;
    float: left;
    width: 660px;
    height: 260px;
    margin-top: 20px;
}
.mail .content{
    font-size: 18px;
    width: 176px;
    margin: 93px auto 0;
}
.contact .mail img{
    display: block;
    margin: 0 auto 16px;
    width: 26px;
    height: 18px;
}
.contact .mail p{
    margin: 0 0 16px 0;
    text-align: center;
}
.contact .gongzhonghao{
    background: #FF5207;
    float: left;
    width: 540px;
    height: 300px;
}
.contact .gongzhonghao img{
    display: block;
    margin: 55px auto 0;
    width: 144px;
    height: 144px;
}
.contact .gongzhonghao p{
    margin-top: 10px;
    text-align: center;
}