.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: 100vh;
}
.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%;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    font-size: 0;
}

.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-url-box{
    width: 100%;
    position: absolute;
    bottom: 130px;
    left: 0;
    text-align: center;
}
.index-banner-url{
    width: 100%;
    display: block;
}
.index-banner-url a{
    display: inline-block;
    width: 360px;
    font-size: 18px;
    line-height: 58px;
    box-sizing: border-box;
    border: 1px solid #fff;
    font-family: "Noto Sans TC";
    font-weight: 100;
    color: #fff;
    transition: all .3s linear;
    background-color: rgba(0, 0, 0, 0.7);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.35);
}



.index-video-open{
    display: none;
}
.not-banner{
    display: none;
}



@media only screen and (min-width: 1921px){
    .index-banner{
        width: 100vw;
    }
}
@media only screen and (max-width: 1800px){
    .index-banner{
        width: 100%;
    }
}
@media only screen and (max-width: 1000px){
    .index-banner{
        width: 100%;
    }
    .index-banner-box, 
    .index-banner-list, 
    .index-video-box, 
    .index-video, 
    .index-video-bg{
        height: calc((920 / 1800) * 100vw);
    }
    .index-banner-url-box{
        bottom: 10%;
    }
}
@media only screen and (max-width: 550px){
    .index-banner-url a{
        width: 200px;
        font-size: 14px;
        line-height: 28px;
    }
}
@media only screen and (min-width: 1001px){
    .index-banner-url a:hover{
        background-color: #a37e7f;
        border-color: #a37e7f;
        color: #000;
    }
}