.header .header-nav-item:nth-child(1)::after{
    content: '';
}
.banner .swiper{
}
.banner .swiper-slide{
    position: relative;
}
.banner .swiper-slide .banner-text{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    color: #fff;
    width: 1200px;
    text-align: left;
}

.banner .swiper-slide .banner-title{
    font-size: 52px;
    line-height: 58px;
    font-weight: bold;
}
.banner .swiper-slide .banner-content{
    font-size: 20px;
    line-height: 30px;
    margin-top: 30px;
}
.banner .swiper-slide .banner-btn{
    width: 160px;
    height: 40px;
    background: rgba(255,255,255,0.4);
    border: 1px solid #FFFFFF;
    font-size: 16px;
    color: #FFFFFF;
    line-height: 40px;
    text-align: center;
    margin-top: 60px;
}
.banner .swiper-slide .banner-btn a{
    color: #FFFFFF;
}
.banner .swiper-pagination {
    height: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    bottom: 60px;
}
.banner .swiper-horizontal>.swiper-pagination-bullets .swiper-pagination-bullet,
.banner .swiper-pagination-horizontal.swiper-pagination-bullets .swiper-pagination-bullet{
    width: 60px;
    height: 4px;
    background-color: #FFFFFF;
    border-radius: 0;
    margin: 0;
    opacity: 1;
}
.banner .swiper-pagination-horizontal.swiper-pagination-bullets .swiper-pagination-bullet-active{
    background-color: #DA251C;
    height: 8px;
}



@media screen and (min-width: 1000px) and (max-width: 1440px){
    .banner .swiper-slide .banner-text{
        width: 900px;
    }
    .banner .swiper-slide .banner-title{
        font-size: 40px;
        line-height: 44px;
    }
    .banner .swiper-slide .banner-content{
        font-size: 16px;
        line-height: 24px;
    }
    .banner .swiper-slide .banner-btn{
        margin-top: 40px;
    }
}
@media screen and (max-width: 1000px){
    .banner .swiper-slide .banner-text{
        width: 700px;
    }
    .banner .swiper-slide .banner-title{
        font-size: 30px;
        line-height: 36px;
    }
    .banner .swiper-slide .banner-content{
        font-size: 14px;
        line-height: 21px;
        margin-top: 20px;
    }
    .banner .swiper-slide .banner-btn{
        margin-top: 30px;
        width: 120px;
        height: 30px;
        line-height: 30px;
        font-size: 14px;
    }
}


.about{
    width: 100%;
    background: #F6F6F6;
}
.about .about-content{
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.about .about-video-wrap{
    width: 50%;
    aspect-ratio: 960 / 560;
    position: relative;
    overflow: hidden;
}
.about .about-video-wrap .about-img{
    width: 100%;
    height: 100%;
}
.about .about-video-wrap .about-img img{
    width: 100%;
    height: 100%;
}
.about .about-video-wrap .about-img .about-img-icon{
    position: absolute;
    top: 50%;
    left: 50%;
    width: 80px;
    height: 80px;
    transform: translate(-50%,-50%);
    cursor: pointer;
    z-index: 1;
}
.about .about-video-wrap .about-video{
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 2;
    background-color: #E6E6E6;
    display: none;
}
.about .about-video-wrap .about-video video{
    width: 100%;
    height: 100%;
}
.about .about-content .about-text{
    width: calc(50% - 60px);
    padding-left: calc((50% - 600px));
}
.about .about-content .about-text .title{
    text-align: left;
}
.about .about-content .about-text .about-text-desc{
    font-size: 14px;
    color: #1A1A1A;
    line-height: 21px;
    margin-top: 30px;
}
.about .about-content .about-engineering{
    margin-top: 50px;
    display: flex;
    justify-content: space-between;
}
.about .about-content .about-engineering .about-engineering-item .about-engineering-item-num{
    font-weight: bold;
    font-size: 30px;
    color: #1A1A1A;
    line-height: 33px;
}
.about .about-content .about-engineering .about-engineering-item:hover .about-engineering-item-num{
    color: #DA251C;
}
.about .about-content .about-engineering .about-engineering-item .about-engineering-item-num span{
    font-size: 16px;
}
.about .about-content .about-engineering .about-engineering-item .about-engineering-item-name{
    font-size: 12px;
    color: #999999;
    line-height: 14px;
    margin-top: 10px;
}
.more{
    width: 108px;
    height: 40px;
    font-size: 14px;
    text-align: center;
    line-height: 40px;
    border-radius: 20px;
    border: 1px solid #D5D5D5;
}
.more a{
    width: 100%;
    height: 100%;
    display: block;
    color: #666666;
}
.more:hover{
    background: #DA251C;
    border-color: #DA251C;
}
.more:hover a{
    color: #FFFFFF;
}
.about .more{
    margin-top: 50px;
}


@media screen and (min-width: 1000px) and (max-width: 1440px){
    .about .about-content .about-text{
        width: calc(50% - 40px);
        padding-left: calc( 50% - 450px );
    }
    .about .about-content .about-text .about-text-desc{
        font-size: 12px;
        line-height: 16px;
        margin-top: 20px;
    }
    .about .about-content .about-engineering{
        margin-top: 30px;
    }
    .about .about-content .about-engineering .about-engineering-item .about-engineering-item-num{
        font-size: 24px;
        line-height: 27px;
    }
    .about .about-content .about-engineering .about-engineering-item .about-engineering-item-name{
        margin-top: 6px;
    }
    .about .more{
        margin-top: 30px;
    }
    .about .about-video-wrap .about-img .about-img-icon{
        width: 60px;
        height: 60px;
    }
}
@media screen and (max-width: 1000px){
    .about .about-content .about-text{
        width: calc(50% - 20px);
        padding-left: calc( 50% - 350px );
    }
    .about .about-content .about-text .about-text-desc{
        font-size: 12px;
        line-height: 16px;
        margin-top: 10px;
    }
    .about .about-content .about-engineering{
        margin-top: 10px;
    }
    .about .about-content .about-engineering .about-engineering-item .about-engineering-item-num{
        font-size: 20px;
        line-height: 22px;
    }
    .about .about-content .about-engineering .about-engineering-item .about-engineering-item-name{
        margin-top: 6px;
        font-size: 10px;
    }
    .more{
        width: 80px;
        height: 30px;
        line-height: 30px;
        font-size: 12px;
    }
    .about .more{
        margin-top: 10px;
    }
    .about .about-video-wrap .about-img .about-img-icon{
        width: 40px;
        height: 40px;
    }
}


.products{
    width: 1200px;
    margin: 80px auto;
}
.title-wrap{
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.title-wrap .title{
    font-weight: bold;
    font-size: 40px;
    color: #1A1A1A;
    line-height: 44px;
    text-align: left;
}

.products .product-list{
    margin-top: 30px;
    position: relative;
    padding-bottom: 50px;
}
.products .product-list .product-item{
    border: 1px solid #DBDBDB;
    cursor: pointer;
}
.products .product-list .product-item .product-img{
    width: 100%;
    aspect-ratio: 386 / 292;
    position: relative;
}
.products .product-list .product-item .product-img img{
    width: 100%;
    height: 100%;
}
.products .product-item .product-img .product-img-icon{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-color: rgba(0,0,0,.4);
    display: none;
}
.products .product-item .product-img .product-img-icon img{
    width: 40px;
    height: 40px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.products .product-item:hover .product-img .product-img-icon{
    display: block;
}
.products .product-list .product-item .product-title{
    font-weight: bold;
    font-size: 16px;
    color: #1A1A1A;
    line-height: 27px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    margin: 10px 16px;
}
.products .product-list .product-item .product-attr-wrap{
    padding: 0 16px;
}
.products .product-list .product-item .product-attr-wrap .product-attr-item{
    display: grid;
    grid-template-columns: 110px 1fr;
    margin-bottom: 10px;
    font-size: 14px;
}
.products .product-list .product-item .product-attr-wrap .product-attr-item .product-attr-key{
    color: #999999;
}
.products .product-list .product-item .product-attr-wrap .product-attr-item .product-attr-value{
    color: #666666;
}

.products .products-prev,
.products .products-next{
    position: absolute;
    bottom: 0;
    right: 0;
    width: 30px;
    height: 30px;
    z-index: 10;
    cursor: pointer;
}
.products .products-prev{
    right: 40px;
    background: url("../images/products-prev-active.webp") no-repeat center center;
    background-size: cover;
}
.products .products-next{
    background: url("../images/products-next-active.webp") no-repeat center center;
    background-size: cover;
}
.products .products-prev.swiper-button-disabled{
    cursor: not-allowed;
    background-image: url("../images/products-prev.webp");
}
.products .products-next.swiper-button-disabled{
    cursor: not-allowed;
    background-image: url("../images/products-next.webp");
}
.products .products-pagination{
    top: auto;
    bottom: 14px;
    width: calc( 100% - 90px );
    height: 2px;
}
.products .products-pagination .swiper-pagination-progressbar-fill{
    background: #DA251C;
}


@media screen and (min-width: 1000px) and (max-width: 1440px){
    .products{
        width: 900px;
        margin: 60px auto;
    }
    .title-wrap .title{
        font-size: 30px;
        line-height: 40px;
    }
    .products .product-list .product-item .product-title{
        font-size: 14px;
        line-height: 21px;
        margin: 5px 10px;
    }
    .products .product-list .product-item .product-attr-wrap{
        padding: 0 10px;
    }
    .products .product-list .product-item .product-attr-wrap .product-attr-item{
        margin-bottom: 5px;
        font-size: 12px;
        grid-template-columns: 90px 1fr;
    }
}
@media screen and (max-width: 1000px){
    .products{
        width: 700px;
        margin: 40px auto;
    }
    .title-wrap .title{
        font-size: 24px;
        line-height: 30px;
    }
    .products .product-list{
        margin-top: 20px;
        padding-bottom: 40px;
    }
    .products .product-item .product-img .product-img-icon img{
        width: 30px;
        height: 30px;
    }
    .products .product-list .product-item .product-title{
        font-size: 12px;
        line-height: 18px;
        margin: 2px 5px;
    }
    .products .product-list .product-item .product-attr-wrap{
        padding: 0 5px;
    }
    .products .product-list .product-item .product-attr-wrap .product-attr-item{
        margin-bottom: 0;
        font-size: 12px;
        line-height: 18px;
        grid-template-columns: 85px 1fr;
    }

    .products .products-prev, .products .products-next{
        width: 20px;
        height: 20px;
    }
    .products .products-prev{
        right: 25px;
    }
    .products .products-pagination{
        width: calc(100% - 55px);
        bottom: 9px;
    }
}


.service-wrap{
    width: 100%;
    aspect-ratio: 1920 / 700;
    background-size: cover;
    background-position: center center;
    padding: 80px 0;
}
.service-wrap .service{
    width: 1200px;
    margin: 0 auto;
}
.service-wrap .service .title{
    color: #FFFFFF;
    text-align: left;
}
.service-wrap .service .service-desc{
    width: 50%;
    font-size: 14px;
    color: rgba(255, 255, 255, .6);
    line-height: 21px;
    margin-top: 40px;
}
.service-wrap .service .more{
    margin-top: 60px;
    background: rgba(255,255,255,0.3);
}
.service-wrap .service .more a{
    color: #FFFFFF;
}
.service-wrap .service .more:hover{
    background: #DA251C;
}
.service-wrap .service .service-content{
    margin-top: 130px;
    display: flex;
    justify-content: space-between;
}
.service-wrap .service .service-content .service-item{
    text-align: center;
    cursor: pointer;
}
.service-wrap .service .service-content .service-item .service-icon{
    width: 55px;
    height: 55px;
    transition: all 0.5s;
}
.service-wrap .service .service-content .service-item .service-title{
    margin-top: 40px;
    font-weight: bold;
    font-size: 24px;
    color: #FFFFFF;
}
.service-wrap .service .service-content .service-item:hover .service-icon{
    transform: rotateY(180deg);
}


@media screen and (min-width: 1000px) and (max-width: 1440px){
    .service-wrap{
        padding: 50px 0;
    }
    .service-wrap .service{
        width: 900px;
    }
    .service-wrap .service .service-desc{
        margin-top: 20px;
    }
    .service-wrap .service .more{
        margin-top: 40px;
    }
    .service-wrap .service .service-content{
        margin-top: 40px;
    }
    .service-wrap .service .service-content .service-item .service-icon{
        width: 45px;
        height: 45px;
    }
    .service-wrap .service .service-content .service-item .service-title{
        margin-top: 20px;
        font-size: 20px;
    }
}
@media screen and (max-width: 1000px){
    .service-wrap{
        padding: 20px 0;
    }
    .service-wrap .service{
        width: 700px;
    }
    .service-wrap .service .service-desc{
        margin-top: 10px;
        font-size: 12px;
        line-height: 18px;
    }
    .service-wrap .service .more{
        margin-top: 10px;
    }
    .service-wrap .service .service-content{
        margin-top: 20px;
    }
    .service-wrap .service .service-content .service-item .service-icon{
        width: 30px;
        height: 30px;
    }
    .service-wrap .service .service-content .service-item .service-title{
        margin-top: 10px;
        font-size: 16px;
    }
}


.news{
    width: 1200px;
    margin: 80px auto;
}
.news .news-list{
    margin-top: 40px;
    display: flex;
}
.news .news-list .news-item{
    cursor: pointer;
    width: 32%;
    margin-right: 2%;
}
.news .news-list .news-item:nth-child(3n){
    margin-right: 0;
}
.news .news-list .news-item .news-item-img{
    width: 100%;
    aspect-ratio: 386 / 330;
    position: relative;
}
.news .news-list .news-item .news-item-img img{
    width: 100%;
    height: 100%;
}
.news .news-list .news-item .news-item-img .news-item-img-icon{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-color: rgba(0,0,0,.4);
    display: none;
}
.news .news-list .news-item .news-item-img .news-item-img-icon img{
    width: 40px;
    height: 40px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.news .news-list .news-item:hover .news-item-img .news-item-img-icon{
    display: block;
}
.news .news-list .news-item .news-item-title{
    font-weight: bold;
    font-size: 18px;
    color: #1A1A1A;
    line-height: 27px;
    margin-top: 10px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.news .news-list .news-item .news-item-desc{
    font-size: 12px;
    color: #666666;
    line-height: 18px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    margin-top: 10px;
}





@media screen and (min-width: 1000px) and (max-width: 1440px){
    .news{
        width: 900px;
        margin: 60px auto;
    }
    .news .news-list{
        margin-top: 30px;
    }
    .news .news-list .news-item .news-item-title{
        font-size: 16px;
        line-height: 24px;
        margin-top: 5px;
    }
    .news .news-list .news-item .news-item-desc{
        margin-top: 5px;
    }
}
@media screen and (max-width: 1000px) {
    .news{
        width: 700px;
        margin: 40px auto;
    }
    .news .news-list{
        margin-top: 20px;
    }
    .news .news-list .news-item .news-item-img .news-item-img-icon img{
        width: 30px;
        height: 30px;
    }
    .news .news-list .news-item .news-item-title{
        font-size: 14px;
        line-height: 21px;
        margin-top: 2px;
    }
    .news .news-list .news-item .news-item-desc{
        margin-top: 2px;
    }
}