.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%;
    overflow: hidden;
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-60px);
}

.banner .img img {
    width: auto;
}

.banner video{
    width: 100%;
}
.banner .wz {
    width: 41.1458%;
    /* 790px */
    position: absolute;
    z-index: 3;
    left: 7.2916%;
    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 {
    width: 100%;
    overflow: hidden;
    padding-top: 7.8125%;
    /* 150px */
}

.product_function .box1 .w1440 {
    display: flex;
    justify-content: space-between;
}

.product_function .box1 .w1440 .l {
    width: 56.9444%;
    /* 820px */
}

.product_function .box1 .w1440 .l .title {
    margin: 0 0 1.25rem;
    text-align: left;
}

.product_function .box1 .w1440 .l .con {
    font-size: 1.125rem;
    line-height: 1.875rem;
}

.product_function .box1 .w1440 .l ul {
    display: flex;
    margin-top: 3.4375rem;
}

.product_function .box1 .w1440 .l ul li {
    width: 24.3902%;
    /* 200px */
    display: flex;
    flex-direction: column;
    align-items: center;
}

.product_function .box1 .w1440 .r {
    width: 42.7083%;
    /* 615px */
    position: relative;
}

.product_function .box1 .w1440 .r .img-inner {
    position: relative;
    left: 0;
    top: 0;
}


.product_function .box2 {
    display: flex;
    overflow: hidden;
    flex-direction: column;
}

.product_function .box2 .l {
    width: 100%;
}

.product_function .box2 .l img {
    width: 100%;
}

.product_function .box2 .r {
    width: 100%;
    background: #eeedeb;
    display: flex;
    flex-wrap: wrap;
}

.product_function .box2 .r li {
    width: 33.33%;
    /* 360.33px */
    display: flex;
    align-items: center;
}

.product_function .box2 .r li .img {
    width: 100%;
    height: 100%;
}

.product_function .box2 .r li .img img {
    width: 100%;
    object-fit: cover;
}

.product_function .box2 .r li .wz {
    padding: 0 5.5555%;
}

.product_function .box2 .r li .wz h3 {
    font-family: "HELVETICA-BOLD";
    font-size: 1.25rem;
    line-height: 2.25rem;
    color: #035ca7;
}

.product_function .box2 .r li .wz div {
    font-size: 1rem;
    line-height: 1.875rem;
}

.product_function .box3 {
    overflow: hidden;
}

.product_function .box3 .con {
    text-align: center;
    max-width: 960px;
    margin: 0 auto;
    font-size: 1.5rem;
    line-height: 2.25rem;
}

.product_function .box3 .img {
    width: 100%;
    position: relative;
}

.product_function .box3 .img .img-inner {
    position: relative;
    left: 50%;
    transform: translateX(-50%);
}

.product_function .box3 .img .img-inner img {
    max-width: 100%;
}

.product_function .box4 {
    overflow: hidden;
    background: url(../images/outdoor_40.jpg) no-repeat center;
}

.product_function .box4 .ul1 {
    display: flex;
    justify-content: center;
}

.product_function .box4 .ul1 li {
    width: 11.25rem;
    margin: 0 .3125rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.product_function .box4 .ul1 li div {
    width: 5.625rem;
    height: 5.625rem;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #035ca7;
    border-radius: 50%;
}

.product_function .box4 .ul1 li p {
    font-size: 1rem;
    line-height: 1.5rem;
    text-align: center;
    margin-top: 1.25rem;
}

.product_function .box4 .ul2 {
    display: flex;
    justify-content: center;
    margin: 3.125rem 0 6.25rem;
}

.product_function .box4 .ul2 li {
    width: 258px;
    margin: 0 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.product_function .box4 .ul2 li div {
    aspect-ratio: 258/260;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 1.5625rem;
}

.product_function .box4 .ul2 li p {
    font-size: 1rem;
    line-height: 1.5rem;
    text-align: center;
    margin-top: 1.875rem;
}

.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_parameters ul{
        margin-bottom: 3.125rem;
    }
    .product_function .box1{
        padding-top: 0;
    }
    .product_function .box1 .w1440{
        flex-direction: column;
    }
    .product_function .box1 .w1440 .l{
        width: 100%;
    }
    .product_function .box1 .w1440 .l ul{
        margin-top: 1.875rem;
    }
    .product_function .box1 .w1440 .l ul li{
        width: 33.33%;
        padding: 0 2%;
    }
    .product_function .box1 .w1440 .r{
        width: 100%;
    }
    .product_function .box1 .w1440 .r div img{
        width: 100%;
    }
    .product_function .box3 .con{
        font-size: .875rem;
        line-height: 1.25rem;
    }
    .product_function .box4 .ul1{
        flex-wrap: wrap;
    }
    .product_function .box4 .ul1 li{
        width: 33.33%;
        margin: 0 0 .9375rem;
        padding: 0 2%;
    }
    .product_function .box4 .ul2{
        flex-wrap: wrap;
        margin: 1.25rem 0 1.875rem;
    }
    .product_function .box4 .ul2 li{
        width: 48%;
        margin: 0 1%;
    }
    .product_function .box4 .ul2 li div img{
        width: 100%;
    }
    .product_function .box2 .r li{
        width: 100%;
    }
    .product_function .box2 .r li .wz{
        padding: 1.875rem 1.25rem;
        width: 100%;
    }
        
    
    
    
    .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) {

}