.banner{
    width: 100%;
    position: relative;
    overflow: hidden;
}
.banner .bg{
    width: 100%;
    overflow: hidden;
}
.banner .bg img{
    position: relative;
    left: 50%;
    transform: translateX(-50%);
}
.banner .img{
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: absolute;
    left: 0;
    top: 0;
}
.banner .img img{
    position: relative;
    z-index: 2;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}
.banner video{
    width: 100%;
}
.banner .wz{
    width: 41.1458%;    /* 790px */
    position: absolute;
    z-index: 3;
    left: 6.25%;
    top: 50%;
    transform: translateY(-50%);
    color: #ffffff;
}
.banner .wz h3{
    font-family: "HELVETICA-BOLD";
    font-size: 3.75rem;
    margin-bottom: 2.5rem;
}
.banner .wz p{
    font-size: 1.25rem;
    line-height: 1.875rem;
}


.title{
    font-family: "HELVETICA-BOLD";
    font-size: 3.75rem;
    line-height: 4.5rem;
    text-align: center;
    margin: 5rem 0 1.25rem;
}
.title span{
    color: #035ca7;
}
.subtitle{
    font-size: 1.5rem;
    line-height: 1.875rem;
    text-align: center;
    margin: 2.1875rem 0 3.4375rem;
}



.product_application ul{
    display: flex;
    justify-content: space-between;
    margin-bottom: 6.25rem;
}
.product_application ul li{
    width: 31.9444%;    /* 460px */
}
.product_application ul li div{
    overflow: hidden;
    aspect-ratio: 460/230;
}
.product_application ul li div video{
    width: 100%;
}
.product_application ul li p{
    text-align: center;
    font-size: 1.5rem;
    line-height: 1.875rem;
    margin-top: 1.25rem;
}


.product_function .box1{
    overflow: hidden;
    background: #f1f1f1;
}
.product_function .box1 ul{
    display: flex;
    justify-content: center;
    margin-bottom: 3.75rem;
}
.product_function .box1 ul li{
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 2.8125rem;
}
.product_function .box1 ul li h3{
    font-size: 1.125rem;
    line-height: 1.5rem;
    margin-top: 1.625rem;
}
.product_function .box1 .img{
    margin-bottom: 6.25rem;
}
.product_function .box1 .img img{
    width: 100%;
}

.product_function .box2{
    position: relative;
    width: 100%;
    overflow: hidden;
    aspect-ratio: 1920/669;
}
.product_function .box2 .bg img{
    width: 100%;
}
.product_function .box2 .w1440{
    height: 100%;
    position: absolute;
    z-index: 2;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.product_function .box2 .w1440 .title{
    width: 50%;
    text-align: left;
    font-size: 3rem;
    line-height: 3.75rem;
    color: #ffffff;
}
.product_function .box2 .w1440 .icon{
    margin: 3.75rem 0 1.875rem;
}
.product_function .box2 .w1440 .icon img{
    width: 4.8125rem;
    margin-right: 1.875rem;
}
.product_function .box2 .w1440 .con{
    width: 50%;
    font-size: 1.125rem;
    line-height: 2.25rem;
    color: #ffffff;
}

.product_function .box3{
    position: relative;
    width: 100%;
    overflow: hidden;
    /* aspect-ratio: 1920/963; */
}
.product_function .box3 .bg img{
    width: 100%;
}
.product_function .box3 .img{
    position: absolute;
    z-index: 3;
    width: 55.7291%; /* 1070 */
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none; /* 避免交互干扰 */
}
.product_function .box3 .img .img-inner{
    position: absolute;
    left: 0%;
    top: 0%;
    width: 100%;
}
.product_function .box3 .img .img-inner img {
    width: 100%;
    height: auto;
    display: block;
}
.product_function .box3 .w1440{
    position: absolute;
    z-index: 2;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    padding-left: 50%;
}
.product_function .box3 .w1440 .title{
    text-align: left;
    font-size: 3rem;
    line-height: 3.75rem;
}
.product_function .box3 .w1440 .icon{
    margin: 3.75rem 0 1.875rem;
}
.product_function .box3 .w1440 .icon img{
    width: 4.8125rem;
    margin-right: 1.875rem;
}
.product_function .box3 .w1440 .con{
    font-size: 1.125rem;
    line-height: 2.25rem;
}

.product_function .box5{
    overflow: hidden;
}
.product_function .box5 .subtitle{
    padding: 0 15.9722%;    /* padding: 0 230px; */
}
.product_function .box5 .img{
    overflow: hidden;
    margin-bottom: 5.625rem;
}
.product_function .box5 .img img{
    width: 100%;
}
.product_function .box5 .img video{
    width: 100%;
}

.product_parameters{
    overflow: hidden;
    background: #f1f1f1;
}
.product_parameters .con{
    background: #ffffff;
    border-radius: .625rem;
    padding: 1.875rem 1.25rem;
    margin-bottom: 6.25rem;
}
.product_parameters .con dl dt{
    width: 100%;
    padding-bottom: 10px;
    border-bottom: 1px solid #f1f1f1;
}
.product_parameters .con dl dt .scroll{
    min-width: 100%;
    display: flex;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-color: #035ca7 #e0eeff;
    scrollbar-width: thin;
}
.product_parameters .con dl dt .scroll span{
    font-family: "HELVETICA-BOLD";
    font-size: 1.5rem;
    display:inline-block;
    height: 2.8125rem;
    margin-right: 6.25%;    /* 90px */
    cursor: pointer;
    white-space: nowrap;
}
.product_parameters .con dl dt .scroll span.on{
    color: #035ca7;
    border-bottom: 3px solid #035ca7;
}
.product_parameters .con dl dt .scroll::-webkit-scrollbar {
    height: 5px;
}
.product_parameters .con dl dt .scroll::-webkit-scrollbar-track {
    background: #e0eeff;
    border-radius: 5px;
}
.product_parameters .con dl dt .scroll::-webkit-scrollbar-thumb {
    background: #035ca7;
    border-radius: 5px;
    border: 2px solid #e0eeff;
}
.product_parameters .con dl dt .scroll::-webkit-scrollbar-thumb:hover {
    background: #035ca7;
}
.product_parameters .con dl dd .box{
    display: none;
}
.product_parameters .con dl dd .box.on{
    display: block;
}
.product_parameters .con dl dd h4{
    font-family: "HELVETICA-BOLD";
    font-size: 1.5rem;
    padding: 2.5rem 0 1rem;
    border-bottom: 1px solid #f1f1f1;
}
.product_parameters .con dl dd ul{
    display: flex;
    flex-wrap: wrap;
}
.product_parameters .con dl dd ul li{
    width: 30%;    /* 420px */
    font-size: 1rem;
    line-height: 1.875rem;
    padding: .75rem 0;
    margin-right: 5%;
    border-bottom: 1px dashed #f1f1f1;
}
.product_parameters .con dl dd ul li:nth-child(3n){
    margin-right: 0;
}
.product_parameters .con dl dd ul li p{
    color: #666666;
}
.product_parameters .con dl dd ul li div{
    font-family: "HELVETICA-BOLD";
}

.product_parameters .con dl dd ul.ul4 li{
    width: 21.25%;    /* 290px */
    margin-right: 5%;
}
.product_parameters .con dl dd ul.ul4 li:nth-child(4n){
    margin-right: 0;
}






@media (max-width: 1360px) {
    .title{
        font-size: 2.5rem;
        line-height: 3.125rem;
        margin: 3.75rem 0 1.25rem;
    }
    .subtitle{
        margin: 1.25rem 0 2.5rem;
    }
}

@media (max-width: 1199px) {
    .title{
        font-size: 1.875rem;
        line-height: 2.5rem;
        margin: 2.5rem 0 1.25rem;
    }
}

@media (max-width: 768px) {
    .banner .bg img{
        width: 100%;
    }
    .banner .img img{
        width: 100%;
    }
    .banner .wz h3{
        font-size: 1.25rem;
        line-height: 1.875rem;
        margin-bottom: .625rem;
    }
    .banner .wz p{
        font-size: .875rem;
        line-height: 1.25rem;
    }



    .title{
        font-size: 1.5rem;
        line-height: 2.125rem;
        margin: 1.875rem 0 .9375rem;
    }
    .subtitle{
        font-size: 1rem;
        line-height: 1.625rem;
        margin: .625rem 0 1.25rem;
    }
    .subtitle br{
        display: none;
    }

    .product_application ul{
        margin-bottom: 3.125rem;
    }
    .product_application ul li p{
        font-size: .875rem;
    }

    .product_function .box1 ul li{
        width: 33.33%;
        margin: 0;
    }
    .product_function .box1 .img{
        margin-bottom: 3.125rem;
    }
    .product_function .box2 .w1440 .title{
        font-size: 1.5rem;
        line-height: 2.125rem;
        margin: 0;
    }
    .product_function .box2 .w1440 .icon{
        margin: .625rem 0;
    }
    .product_function .box2 .w1440 .icon img{
        width: 1.875rem;
    }
    .product_function .box2 .w1440 .con{
        font-size: .875rem;
        line-height: 1.25rem;
    }
    .product_function .box3 .w1440{
        top: 0;
        height: 100%;
    }
    .product_function .box3 .w1440 .title{
        font-size: 1.5rem;
        line-height: 2.125rem;
        margin: 0;
    }
    .product_function .box3 .w1440 .icon{
        margin: .625rem 0;
    }
    .product_function .box3 .w1440 .icon img{
        width: 1.875rem;
        margin-right: .9375rem;
    }
    .product_function .box3 .w1440 .con{
        font-size: .875rem;
        line-height: 1.25rem;
    }






    .product_parameters .con dl dt{
        display: flex;
        height: 3.75rem;
        padding-bottom: 0;
    }
    .product_parameters .con dl dt span{
        height: 3.75rem;
        font-size: 1rem;
        line-height: 1.5rem;
        margin-right: .9375rem;
    }
    .product_parameters .con dl dd h4{
        padding: 1.25rem 0 .625rem;
    }
    .product_parameters .con dl dd ul li{
        width: 48%;
        margin-right: 4%;
        line-height: 1.5rem;
    }
    .product_parameters .con dl dd ul li:nth-child(3n){
        margin-right: 4%;
    }
    .product_parameters .con dl dd ul li:nth-child(2n){
        margin-right: 0;
    }
    .product_parameters .con dl dd ul.ul4 li{
        width: 48%;
        margin-right: 4%;
    }
    .product_parameters .con dl dd ul.ul4 li:nth-child(2n){
        margin-right: 0;
    }

    
    
    
    
}

@media (max-width: 550px) {

}