.index-banner-box{
    width: 100%;
    display: block;
    position: relative;
    overflow: hidden;
    margin-top: 180px;
    background-color: #f5f5f5;
}
.index-banner-box,
.index-banner-list,
.index-video-box,
.index-video,
.index-video-bg{
    height: calc((600 / 1200) * 1000px);
}
.index-banner-list-box{
    width: 1000px;
    max-width: 100%;
    margin: 0 auto;
    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%;
    text-align: center;
    font-size: 36px;
    color: #FFF;
    display: block;
    position: absolute;
    z-index: 9;
    top: 48%;
    text-shadow: rgba(0,0,0,0.6) 2px 2px 2px;
    cursor: context-menu;
}
.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: 48%;
    left: 0;
    z-index: 5;
    pointer-events: none;
    text-align: center;
}
.index-video-open{
    display: none;
}
.not-banner{
    display: none;
}
.index-banner-list-box.slick-dotted.slick-slider{
    margin-bottom: 0;
}
.index-banner-list-box .slick-dots{
    bottom: 0px;
}
.index-banner-list-box .slick-dots li button:before{
    color: #7B2532;
}
.index-banner-list-box .slick-dots li.slick-active button:before{
    color: #7B2532;
    opacity: 1;
}
.index-banner-list-box .slick-dots li button:hover:before, 
.index-banner-list-box .slick-dots li button:focus:before{
    opacity: 0.75;
}

/* @media only screen and (max-width: 1300px){
    .index-banner-list-box{
        width: 1180px;
    }
    .index-banner-box, 
    .index-banner-list, 
    .index-video-box, 
    .index-video, 
    .index-video-bg {
        height: calc((600 / 1200) * 1180px);
    }
}
@media only screen and (max-width: 1200px){
    .index-banner-list-box{
        width: 980px;
    }
    .index-banner-box, 
    .index-banner-list, 
    .index-video-box, 
    .index-video, 
    .index-video-bg {
        height: calc((600 / 1200) * 980px);
    }
} */
@media only screen and (max-width: 1000px){
    .index-banner-list-box{
        width: 740px;
    }
    .index-banner-box, 
    .index-banner-list, 
    .index-video-box, 
    .index-video, 
    .index-video-bg {
        height: calc((600 / 1200) * 740px);
    }
    .index-banner-box{
        margin-top: 93px;
    }
}
@media only screen and (max-width: 768px){
    .index-banner-list-box{
        width: 100%;
    }
    .index-banner-box, 
    .index-banner-list, 
    .index-video-box, 
    .index-video, 
    .index-video-bg {
        height: calc((600 / 1200) * 100vw);
    }
}
@media only screen and (max-width: 550px){
    .index-banner-box{
        margin-top: 65px;
    }
}