.header .header-nav-item:nth-child(1)>a{
    color: #0C5BE2;
}

.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;
    z-index: 2;
}

.banner .swiper-slide .banner-title{
    font-size: 20px;
    line-height: 22px;
    padding-left: 24px;
    position: relative;
}
.banner .swiper-slide .banner-title::before{
    content: "";
    position: absolute;
    width: 4px;
    height: 20px;
    background: #0C5BE2;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
}
.banner .swiper-slide .banner-content{
    font-weight: bold;
    font-size: 56px;
    line-height: 75px;
    margin-top: 30px;
}
.banner .swiper-slide .banner-desc{
    font-size: 20px;
    color: #FFFFFF;
    line-height: 30px;
    margin-top: 30px;
}
.banner .swiper-slide .banner-btn{
    display: block;
    width: 160px;
    height: 50px;
    background: #0C5BE2;
    font-size: 14px;
    color: #FFFFFF;
    line-height: 50px;
    text-align: center;
    margin-top: 30px;
}

.banner .banner-prev,
.banner .banner-next{
    width: 70px;
    height: 70px;
    position: absolute;
    top: 50%;
    left: 30px;
    transform: translateY(-50%);
    background: url("../images/banner-prev.webp") no-repeat center center;
    z-index: 100;
}
.banner .banner-next {
    background-image: url("../images/banner-next.webp");
    left: auto;
    right: 30px;
}



@media screen and (min-width: 1000px) and (max-width: 1440px){
    .banner .swiper-slide .banner-text{
        width: 900px;
    }
    .banner .swiper-slide .banner-title{
        font-size: 18px;
    }
    .banner .swiper-slide .banner-content{
        font-size: 42px;
        line-height: 50px;
        margin-top: 20px;
    }
    .banner .swiper-slide .banner-desc{
        font-size: 18px;
        line-height: 26px;
        margin-top: 20px;
    }
    .banner .swiper-slide .banner-btn{
        margin-top: 20px;
    }
}
@media screen and (max-width: 1000px){
    .banner .swiper-slide .banner-text{
        width: 700px;
    }
    .banner .swiper-slide .banner-title{
        font-size: 16px;
        line-height: 18px;
    }
    .banner .swiper-slide .banner-content{
        font-size: 30px;
        line-height: 40px;
        margin-top: 10px;
    }
    .banner .swiper-slide .banner-desc{
        font-size: 14px;
        line-height: 20px;
        margin-top: 10px;
    }
    .banner .swiper-slide .banner-btn{
        margin-top: 10px;
        width: 120px;
        height: 36px;
        line-height: 36px;
        font-size: 12px;
    }
}


.products-wrap{
    width: 100%;
    padding-top: 80px;
    background: #F9FAFC;
}
.products{
    width: 1200px;
    margin: 0 auto;
}
.products .product-list{
    margin-top: 20px;
    position: relative;
    display: flex;
    flex-wrap: wrap;
}
.products .product-list .product-item{
    width: 24%;
    margin-right: 1.33%;
    margin-top: 20px;
}
.products .product-list .product-item:nth-child(4n){
    margin-right: 0;
}
.products .product-list .product-item .product-img{
    width: 100%;
    aspect-ratio: 1 / 1;
    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: 30px;
    height: 30px;
    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: 24px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    margin: 10px 0;
}
.products .product-list .product-item .product-more{
    font-size: 13px;
    color: #0C5BE2;
}


@media screen and (min-width: 1000px) and (max-width: 1440px){
    .products-wrap{
        padding-top: 60px;
    }
    .products{
        width: 900px;
    }
    .products .product-list .product-item{
        margin-top: 10px;
    }
    .products .product-list .product-item .product-title{
        font-size: 14px;
        line-height: 21px;
        margin: 6px 0;
    }
    .products .product-list .product-item .product-more{
        font-size: 12px;
    }
}
@media screen and (max-width: 1000px){
    .products-wrap{
        padding-top: 40px;
    }
    .products{
        width: 700px;
    }
    .products .product-list{
        margin-top: 10px;
    }
    .products .product-list .product-item{
        margin-top: 10px;
    }
    .products .product-item .product-img .product-img-icon img{
        width: 24px;
        height: 24px;
    }
    .products .product-list .product-item .product-title{
        font-size: 12px;
        line-height: 18px;
        margin: 2px 0;
    }
    .products .product-list .product-item .product-more{
        font-size: 11px;
    }
}


.service-wrap{
    width: 100%;
    background: #F9FAFC;
    padding-top: 80px;
}
.service{
    width: 1200px;
    margin: 0 auto;
    padding-bottom: 50px;
    position: relative;
    z-index: 2;
}
.service .service-list{
    width: 100%;
    margin-top: 40px;
    background: #FFFFFF;
}
.service .service-list .service-item{
    display: flex;
    align-items: center;
}
.service .service-list .service-item img{
    width: 66.67%;
    aspect-ratio: 800 / 375;
}
.service .service-list .service-item .service-text{
    width: 33.33%;
    padding: 0 30px;
}
.service .service-list .service-item .service-text .service-title{
    font-weight: bold;
    font-size: 20px;
    color: #1A1A1A;
    line-height: 22px;
}
.service .service-list .service-item .service-text .service-line{
    width: 60px;
    height: 4px;
    background: #0C5BE2;
    margin-top: 10px;
}
.service .service-list .service-item .service-text .service-desc{
    font-size: 12px;
    color: #666666;
    line-height: 18px;
    margin-top: 20px;
}
.service .service-pagination{
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: auto;
}
.service .service-pagination .swiper-pagination-bullet{
    width: 30px;
    height: 6px;
    background: #FFFFFF;
    border-radius: 0;
    opacity: 1;
}
.service .service-pagination .swiper-pagination-bullet.swiper-pagination-bullet-active{
    background: #0C5BE2;
}


@media screen and (min-width: 1000px) and (max-width: 1440px){
    .service-wrap{
        padding-top: 60px;
    }
    .service-wrap .service{
        width: 900px;
        padding-bottom: 40px;
    }
    .service .service-list{
        margin-top: 30px;
    }
    .service .service-list .service-item .service-text{
        padding: 0 20px;
    }
    .service .service-list .service-item .service-text .service-desc{
        margin-top: 10px;
    }
}
@media screen and (max-width: 1000px){
    .service-wrap{
        padding-top: 40px;
    }
    .service-wrap .service{
        width: 700px;
        padding-bottom: 30px;
    }
    .service .service-list{
        margin-top: 20px;
    }
    .service .service-list .service-item .service-text{
        padding: 0 10px;
    }
    .service .service-list .service-item .service-text .service-desc{
        margin-top: 10px;
    }
    .service .service-list .service-item .service-text .service-title{
        font-size: 16px;
        line-height: 16px;
    }
    .service .service-list .service-item .service-text .service-line{
        width: 40px;
        height: 3px;
        margin-top: 0;
    }
    .service .service-list .service-item .service-text .service-desc{
        margin-top: 2px;
        font-size: 11px;
        line-height: 15px;
    }
    .service .service-pagination .swiper-pagination-bullet{
        width: 20px;
        height: 3px;
    }
}

.engineering-wrap{
    width: 100%;
    height: 536px;
    position: relative;
    z-index: 1;
    margin-top: -188px;
}
.engineering-wrap .engineering-bg{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background: url("../images/about-bg-index.webp") no-repeat center bottom;
    background-size: cover;
    z-index: -1;
}
.engineering{
    width: 1200px;
    position: absolute;
    left: 50%;
    bottom: 100px;
    transform: translateX(-50%);
    display: flex;
}
.engineering .engineering-item{
    width: 33.33%;
    border-right: 1px solid #FFFFFF;
}
.engineering .engineering-item:last-child{
    border: none;
}
.engineering .engineering-item .engineering-item-num{
    font-family: DIN, DIN;
    font-weight: bold;
    font-size: 50px;
    color: #FFFFFF;
    line-height: 67px;
    text-align: center;
}
.engineering .engineering-item .engineering-item-name{
    font-size: 20px;
    color: #FFFFFF;
    line-height: 22px;
    text-align: center;
    margin-top: 20px;
}


@media screen and (min-width: 1000px) and (max-width: 1440px){
    .engineering-wrap{
        height: 402px;
        margin-top: -180px;
    }
    .engineering{
        width: 900px;
        bottom: 70px;
    }
    .engineering .engineering-item .engineering-item-num{
        font-size: 40px;
        line-height: 45px;
    }
    .engineering .engineering-item .engineering-item-name{
        font-size: 18px;
    }
}
@media screen and (max-width: 1000px){
    .engineering-wrap{
        height: 312px;
        margin-top: -140px;
    }
    .engineering{
        width: 700px;
        bottom: 50px;
    }
    .engineering .engineering-item .engineering-item-num{
        font-size: 36px;
        line-height: 40px;
    }
    .engineering .engineering-item .engineering-item-name{
        font-size: 16px;
    }
}


.about{
    width: 1200px;
    margin: 80px auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.about .about-video-wrap{
    width: 50%;
    aspect-ratio: 600 / 350;
    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: 42px;
    height: 42px;
    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-text{
    width: calc(50% - 60px);
    padding-left: calc((50% - 600px));
}
.about .about-text .title{
    text-align: left;
}
.about .about-text .title-line{
    margin: 10px 0;
}
.about .about-text .about-text-desc{
    font-size: 14px;
    color: #1A1A1A;
    line-height: 21px;
    margin-top: 40px;
}

@media screen and (min-width: 1000px) and (max-width: 1440px){
    .about{
        width: 900px;
        margin: 60px auto;
    }
    .about .about-text .about-text-desc{
        margin-top: 30px;
    }
}
@media screen and (max-width: 1000px){
    .about{
        width: 700px;
        margin: 40px auto;
    }
    .about .about-text .about-text-desc{
        margin-top: 14px;
        font-size: 12px;
        line-height: 18px;
    }
    .about .about-video-wrap .about-img .about-img-icon{
        width: 36px;
        height: 36px;
    }
}


.partner{
    width: 1200px;
    padding: 20px 0;
    margin: 0 auto;
    background: #202020;
    display: flex;
    position: relative;
    z-index: 1;
}
.partner .partner-item{
    width: 20%;
    cursor: pointer;
}
.partner .partner-item img{
    width: 100%;
}

@media screen and (min-width: 1000px) and (max-width: 1440px){
    .partner{
        width: 900px;
        padding: 15px 0;
    }
}
@media screen and (max-width: 1000px){
    .partner{
        width: 700px;
        padding: 10px 0;
    }
}


.news-wrap{
    width: 100%;
    background: #F9FAFC url("../images/news-bg.webp") no-repeat center top;
    background-size: 85%;
    margin-top: -80px;
}
.news{
    width: 1200px;
    margin: 0 auto;
    padding: 160px 0 80px;
}
.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;
}
.news .news-list .news-item .news-item-bottom{
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    line-height: 18px;
}
.news .news-list .news-item .news-item-bottom .news-item-date{
    color: #15499A;
}
.news .news-list .news-item .news-item-bottom .news-item-more{
    color: #666666;
}


@media screen and (min-width: 1000px) and (max-width: 1440px){
    .news-wrap{
        margin-top: -60px;
    }
    .news{
        width: 900px;
        padding: 120px 0 60px;
    }
    .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-wrap{
        margin-top: -45px;
    }
    .news{
        width: 700px;
        padding: 80px 0 40px;
    }
    .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;
    }
    .news .news-list .news-item .news-item-bottom{
        margin-top: 2px;
    }
}