.index-banner-box{
    width: 100%;
    display: block;
    position: relative;
    overflow: hidden;
    margin-top: 80px;
    box-sizing: border-box;
    padding-left: 50px;
}
.index-banner{
    font-size: 0;
}
.index-banner-slong-box{
    width: 43.125rem;
    max-width: 100%;
    display: inline-block;
    vertical-align: middle;
    box-sizing: border-box;
    padding-bottom: 80px;
}
.index-banner-slong span{
    font-family: "Roboto";
    font-weight: 700;
    font-size: 5.5rem;
    line-height: 6.25rem;
    color: #000;
    letter-spacing: 0;
    opacity: 0;
    transition: all .3s linear;
}
.index-banner-slong-text{
    font-family: "Roboto";
    font-weight: 700;
    font-size: 1.75rem;
    line-height: 2.25rem;
    color: #000;
    letter-spacing: 0.06em;
    margin-top: 3.25rem;
    transition-delay: .1s;
}
.index-banner-list-box{
    width: calc(100% - 43.125rem - 80px);
    height: calc((880 / 1100) * (100vw - 43.125rem - 80px - 50px));
    display: inline-block;
    vertical-align: middle;
    margin-left: 80px;
    box-sizing: border-box;
    padding-bottom: 80px;
}
.index-banner-list{
    width: 100%;
    height: 100%;
    display: block;
    position: relative;
}
.index-banner-list .main-bg{
    position: relative;
    z-index: 1;
}
.index-video-mask{
    position: absolute;
    bottom: -80px;
    left: -80px;
    width: calc(100% + 80px);
    height: calc(100% - 20px);
    background-color: #00286e;
}
.index-video{
    width: 100%;
    height: 100%;
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}


@media only screen and (max-width: 1400px){
    .index-banner-slong span{
        font-size: 4.5rem;
        line-height: 4.5rem;
    }
    .index-banner-slong-box {
        width: 40rem;
    }
    .index-banner-slong-text{
        margin-top: 1.25rem;
    }
    .index-banner-list-box{
        width: calc(100% - 40rem - 40px);
        height: calc((880 / 1100) * (100vw - 40rem - 40px - 50px));
        margin-left: 40px;
        padding-bottom: 40px;
    }
    .index-video-mask {
        bottom: -40px;
        left: -40px;
        width: calc(100% + 40px);
        height: calc(100% - 20px);
    }
    .index-banner-slong-text{
        font-size: 1.5rem;
        line-height: 1.75rem;
    }
}
@media only screen and (max-width: 1000px){
    .index-banner-box{
        padding-left: 20px;
        margin-top: 50px;
    }
    .index-banner-slong span{
        font-size: 2.5rem;
        line-height: 2.5rem;
    }
    .index-banner-slong-box {
        width: 24rem;
        padding-bottom: 40px;
    }
    .index-banner-list-box{
        width: calc(100% - 24rem - 40px);
        height: calc((880 / 1100) * (100vw - 24rem - 40px - 20px));
    }
    .index-banner-slong-text{
        font-size: 1rem;
        line-height: 1.25rem;
    }
}
@media only screen and (max-width: 768px){
    .index-banner-slong span{
        font-size: 2rem;
        line-height: 2rem;
    }
    .index-banner-slong-box {
        width: 100%;
        padding: 40px 0;
        padding-right: 20px;
        padding-bottom: calc(100vw + 40px);
        z-index: 3;
        position: relative;
    }
    .index-banner-list-box{
        width: 100%;
        height: 90px;
        position: absolute;
        bottom: 0;
        right: 0;
        margin-left: 20px;
        padding-bottom: 20px;
    }
    .index-banner-list{
        position: static;
        margin-left: auto;
    }
    .index-banner-list .main-bg{
        width: calc(100vw - 20px);
        height: calc(100vw - 20px);
        position: absolute;
        bottom: 30px;
        right: 0;
    }
    .index-video-mask {
        bottom: -20px;
        left: 0;
        width: 100%;
        height: 100%;
    }
    .index-banner-slong-text{
        font-size: 0.875rem;
        line-height: 1rem;
        margin-top: 0.675rem;
    }
}



@media only screen and (min-width: 769px){
    .index-banner-slong-text{
        opacity: 0;
    }
    .index-banner-slong-text.anima{
        animation: fade 1.4s ease 2.6s 1 both;
    }
    .index-banner-list{
        animation: fadeInRight 1.4s ease 1.4s 1 both;
    }
}