.section-banner{
    position: relative;
    width: 100%;
    /* height: 96.46rem; */
    height: 100vh;
    color: #fff;
}
.section-banner .banner-box{
    width: 100%;
    height: 100%;
}
.section-banner .banner-box .banner-item{
    width: 100%;
    height: 100%;

}
.section-banner .banner-box .banner-item .bgel{
    width: 100%;
    height: 100%;
}
.section-banner .banner-box .banner-item .banner-mask{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.banner-mask .banner-mask-content{
    width: 100%;
    height: 100%;
    position: relative;
}
.section-banner .banner-box .banner-item .banner1{
    width: 100%;
    height: 100%;
    background-image: ;
    background-repeat: no-repeat;
    background-size: cover; 
    background-position: center; 
}
/* .banner-mask .banner-mask-content .banner1-car{
    position: absolute;
    top: 25%;
    left: 12.3%;
    width: 78.125%;
    height: 58.7%;
    background-image: ;
    background-repeat: no-repeat;
    background-size: cover;    
} */
.banner-mask .banner-mask-content .banner1-text-top,
.banner-mask .banner-mask-content .banner1-text-bottom{
    width: 40%;
    height: 8.7%;
    border: none;
    border-top: 1px solid rgba(255,255,255,0.34);
    border-bottom: 1px solid rgba(255,255,255,0.34);
    display: flex;
    justify-content: center;
    align-items: center;
}
.banner-mask .banner-mask-content .banner1-text-top{
    position: absolute;
    top: 17.5%;
    left: 33.5%;
    width: 42.5%;
}
.banner-mask .banner-mask-content .banner1-text-bottom{  
    position: absolute;
    top: 68.8%;
    left: 12.3%;    
}

.banner-mask .banner-mask-content .banner1-text-top .banner1-text,
.banner-mask .banner-mask-content .banner1-text-bottom .banner1-text{ 
    width: 100%;  
    /* font-size: 34px; */
    font-size: 3.6rem;
    display: inline-block;
    white-space: nowrap;
    text-align: justify;
    font-family: 'alibaba_puhui_medium';
}
.banner-mask .banner-mask-content .banner1-text-top .banner1-text::after,
.banner-mask .banner-mask-content .banner1-text-bottom .banner1-text::after{
    content: '';
    display: inline-block;
    width: 100%;
}

.section-banner .banner-box .banner-item .banner2{
    width: 100%;
    height: 100%;
    background-image: ;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center; 
    position: relative;
}
.banner2-car{
    position: absolute;
    left: 21%;
    top: 33%;
    width: 109.3rem;
    height: 49.6rem;
    background-image: ;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;        
}
.banner2-text-top,
.banner2-text-bottom{
    font-family: 'alibaba_puhui_medium';
    font-size: 5.8rem;
    line-height: 72px;
    color: #fff;
    padding-left: 10px;
}
.banner2-text-top{
    position: absolute;
    left: 10.9375%;
    top: 13.5%;
}
.banner2-text-bottom{
    position: absolute;
    left: 10.9375%;
    top: 20%;
}
.banner2-item1,.banner2-item2,.banner2-item3{
    position: absolute;
    color: #cdd0d9;
    font-size: 1.8rem;
}
.banner2-item1{
    top: 47.5%;
    left: 72%;
}
.banner2-item2{
    top: 77.5%;
    left: 25.8%;
}
.banner2-item3{
    top: 54.5%;
    left: 22.3%;
}
.section-banner .banner-box .banner-item .banner3{
    width: 100%;
    height: 100%;
    background-image: ;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center; 
}
.banner3-text{
    width: 61%;
    position: absolute;
    left: 19.5%;
    top: 33%;
}
.banner3-text-top{
    /* width: 61%;
    height: 23rem;
    position: absolute;
    left: 19.5%;
    top: 33%; */
    width: 100%;
    height: 23rem;
    margin-bottom: 1rem;
    background-image: ;
    background-size: cover;
    background-repeat: no-repeat;
    /* font-size: 232px; */
    /* font-size: 23.5rem;
    letter-spacing: 1.6rem;
    text-shadow: 0 1.4rem 5.4rem rgba(3,11,21,0.14); */
}
.banner3-text-bottom{
    width: 100%;
    font-size: 4.8rem;
    letter-spacing: .2rem;
    display: inline-block;
    text-align: justify;
    font-family: "oswald_stencil_bold";
}
.banner3-text-bottom::after{
    content: '';
    display: inline-block;
    width: 100%;
} 
.banner3-text-img{
    width: 1114px;
    height: 227px;
    background-image: ;
    background-repeat: no-repeat;
    background-size: cover;
}

.section-banner .banner-nav{
    position: absolute;
    left: 10.9375%;
    bottom: 8.3%;
    width: 78.125%;
    height: 36px;
    padding-bottom: 20px; 
    display: flex;
    justify-content: space-between;
    z-index: 10;
}

.section-banner .banner-nav .banner-nav-item{
    position: relative;
    width: 27.5%;
    height: 100%;
    cursor: pointer;
}
.section-banner .banner-nav .banner-nav-item .nav-item{
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.section-banner .banner-nav .banner-nav-item .nav-active{
    opacity: 1;
}

.nav-item .nav-icon{
    display: inline-block;
    width: 36px;
    height: 36px;
    border: 1px solid rgba(255,255,255,0.18);
    display: flex;
    flex-shrink: 0;
    justify-content: center;
    align-items: center;
    /* font-size: 14px; */
    font-size: 1.5rem;
    opacity: 0.7;
}
.nav-item .nav-text{
    padding-left: 10px;
    padding-right: 5px;
    flex: 1;
    opacity: 0.67;
    /* font-size: 14px; */
    font-size: 1.5rem;
    font-family: 'alibaba_puhui_regular';
}
.nav-item .nav-next{
    width: 12px;
    height: 8px;
    flex-shrink: 0;
    background-image: ;
    background-repeat: no-repeat;
    background-size: cover;
    opacity: 0.35;
}
.section-banner .banner-nav .banner-nav-item .prossbar{
    margin-top: 20px;
    width: 100%;
    height: 1px;
    background: #fff;
    
}
.section-banner .banner-nav .banner-nav-item .prossbar-normal{
    opacity: 0.2;
}
.section-banner .banner-nav .banner-nav-item .prossbar-active{
    margin-top: 20px;
    width: 100%;
    height: 1px;
    background: #fff;
    opacity: 1;
}
.section-video{
    width: 100%;
    height: 97rem;
    /* height: 100vh; */
    position: relative;
    background-image: ;
    background-repeat: no-repeat;
    background-size: cover;
}

.video-mask{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: ;
    background-repeat: no-repeat;
    background-size: cover;
}
.section-video .video-intro{
    width: 100%;
    height: 5rem;
    color: #000;
    margin: 0 auto;
    position: absolute;
    top: 5%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.section-video .video-intro .intro-text{
    width: fit-content;
    /* font-size: 30px; */
    font-size: 3.2rem;
    font-weight: 600;
}
.section-video .video-box{
    width: 136.3rem;
    height: 76.8rem;
    position: absolute;
    top: 12%;
    left: 14.5%;
    border-radius: 10px;
    background: #06090c;
    overflow: hidden;
}
.section-video .video-box .mongolia-video{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.section-video .video-box .video-icon{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 80px;
    height: 80px;
    background-image: ;
    background-repeat: no-repeat;
    background-size: cover;
    cursor: pointer;
}
.section-video .video-box .video-mask{
    width: 100%;
    height: 100%;
    background-image: ;
    background-repeat: no-repeat;
    background-size: cover;
}