@import url(https://fonts.googleapis.com/earlyaccess/cwtexfangsong.css);
.index-banner-box{
    width: 100%;
    display: block;
    position: relative;
    overflow: hidden;
    margin-top: 80px;
}
.index-banner-box,
.index-banner-list,
.index-video-box,
.index-video,
.index-video-bg{
     height: calc(100vh - 80px);
}
.index-banner-list-box{
    width: 100%;
    display: block;
    position: relative;
}
.index-banner-list{
    width: 100%;
    display: block;
     position: relative;
}
.index-banner-list span{
    height: 100%;
    width: 100%;
    display: block;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
}
.index-banner{
    width: 100%;
    height: 100%;
    display: block;
    position: relative;
}

.index-banner-slong-box{
    position: relative;
    text-align: center;
    cursor: context-menu;
}
.index-banner-slong-1,
.index-banner-slong-2{
    font-size: 36px;
    letter-spacing: 4px;
    color: #000;
    display: inline-block;
    vertical-align: top;
    font-family: 'cwTeXFangSong';
    writing-mode: vertical-rl;
    position: relative;
}
.index-banner-slong-1 span,
.index-banner-slong-2 span{
    position: relative;
    z-index: 1;
}
.index-banner-slong-2{
    margin-top: 36px;
}
.index-banner-slong-1:before,
.index-banner-slong-2:before,
.index-banner-slong-1:after,
.index-banner-slong-2:after{
    content: '';
    position: absolute;
    z-index: 0;
    width: 30px;
    height: 30px;
    display: block;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    opacity: 0.5;
    left: 12px;
}
.index-banner-slong-1:before{
    background-image: url(../img/front/index-banner-slong-g.png);
    top: 3px;
}
.index-banner-slong-2:before{
    background-image: url(../img/front/index-banner-slong-b.png);
    top: 3px;
}
.index-banner-slong-1:after{
    background-image: url(../img/front/index-banner-slong-y.png);
    bottom: 10px;
}
.index-banner-slong-2:after{
    background-image: url(../img/front/index-banner-slong-r.png);
    bottom: 8px;
}
.index-video-mask{
    width: 100%;
    height: 100%;
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    background-color: #000;
    opacity: 0.4;
    z-index: 5;
}
.index-video-box{
    width: 100%;
    display: block;
    position: relative;
}
.index-video{
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 5;
    display: block;
}

.index-video-bg{
    width: 100%;
    height: 100%;
    display: block;
    position: absolute;
    z-index: 1;
    top: 0;
    left: 0;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
}

.index-banner-slong-box{
    width: 100%;
    display: block;
    position: absolute;
    top: 36px;
    left: 0;
    z-index: 5;
    pointer-events: none;
    text-align: center;
}
.index-video-open{
    display: none;
}
.not-banner{
    display: none;
}


@media only screen and (max-width: 1000px){
    .index-banner-box{
        margin-top: 68px;
    }
    .index-banner-box, 
    .index-banner-list, 
    .index-video-box, 
    .index-video, 
    .index-video-bg{
        height: 500px;
    }
    .index-banner-slong-1, 
    .index-banner-slong-2{
        font-size: 28px;
    }
    .index-banner-slong-1:before, 
    .index-banner-slong-2:before, 
    .index-banner-slong-1:after, 
    .index-banner-slong-2:after{
        width: 20px;
        height: 20px;
    }
}
@media only screen and (max-width: 550px){
    .index-banner-box{
        margin-top: 53px;
    }
    .index-banner-box, 
    .index-banner-list, 
    .index-video-box, 
    .index-video, 
    .index-video-bg{
        height: 300px;
    }
    .index-banner-slong-1, 
    .index-banner-slong-2{
        font-size: 20px;
        letter-spacing: 2px;
    }
    .index-banner-slong-1:before, 
    .index-banner-slong-2:before, 
    .index-banner-slong-1:after, 
    .index-banner-slong-2:after{
        width: 14px;
        height: 14px;
    }
    .index-banner-slong-1:after,
    .index-banner-slong-2:after{
        bottom: 5px;
    }
}