.index-banner-box{
    width: 100%;
    display: block;
    position: relative;
    overflow: hidden;
}
.index-banner-box,
.index-banner-list,
.index-video-box,
.index-video,
.index-video-bg{
    height: 800px;
}
.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,
.index-video-slong{
    width: 100%;
    font-size: 38px;
    color: #FFF;
    display: block;
    z-index: 9;
    cursor: context-menu;
    font-family: 'Cinzel';
    letter-spacing: 0.06em;
}
.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: 1200px;
    max-width: 100%;
    display: block;
    position: absolute;
    bottom: 115px;
    left: calc((100% - 1200px) / 2);
    z-index: 5;
    pointer-events: none;
}
.index-video-open{
    display: none;
}
.not-banner{
    display: none;
}


@media only screen and (max-width: 1200px){
    .index-banner-slong-box{
        width: 1000px;
        left: calc((100% - 1000px) / 2);
    }
}
@media only screen and (max-width: 1000px){
    .index-banner-slong-box{
        width: 95%;
        left: calc(5% / 2);
        bottom: 6vw;
    }
    .index-banner-box, 
    .index-banner-list, 
    .index-video-box, 
    .index-video, 
    .index-video-bg{
        height: calc((800 / 1920) * 100vw);
    }
}
@media only screen and (max-width: 768px){
    .index-banner-slong, .index-video-slong{
        font-size: 28px;
    }
}
@media only screen and (max-width: 550px){
    .index-banner-slong, .index-video-slong{
        font-size: 18px;
    }
    .index-banner-box, 
    .index-banner-list, 
    .index-video-box, 
    .index-video, 
    .index-video-bg{
        height: 200px
    }
}


@media only screen and (min-width: 1001px){