/**
 * banner styles
 **/
.banner .swiper{
}
.swiper-slide{
    position: relative;
}
.swiper-slide-img{
    width: 100%;
}
.swiper-slide-img img{
    width: 100%;
    height: 100%;
}
.swiper-slide-content{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 1200px;
}
.swiper-slide-content .swiper-slide-title{
    font-size: 46px;
    line-height: 1.5;
    color: #FFFFFF;
    font-weight: bold;
}
.swiper-slide-content .swiper-slide-desc{
    font-size: 20px;
    color: rgba(255, 255, 255, .8);
    line-height: 30px;
    margin-top: 26px;
}
.swiper-slide-content .swiper-slide-btn{
    margin-top: 50px;
}
.swiper-slide-content .swiper-slide-btn .swiper-slide-btn-item{
    width: 178px;
    height: 58px;
    background: #E60012;
    border-radius: 8px;
    float: left;
    font-size: 18px;
    color: #FFFFFF;
    line-height: 58px;
    text-align: center;
    cursor: pointer;
}
.swiper-slide-content .swiper-slide-btn .swiper-slide-btn-item img{
    width: 26px;
    height: 16px;
    margin-left: 10px;
}
.swiper-slide-content .swiper-slide-btn .swiper-slide-btn-item:last-child{
    background: #FFFFFF;
    margin-left: 20px;
    color: #E60012;
}

.swiper-horizontal>.swiper-pagination-bullets,
.swiper-pagination-bullets.swiper-pagination-horizontal,
.swiper-pagination-custom, .swiper-pagination-fraction{
    width: auto;
    height: auto;
    left: 50%;
    transform: translateX(-50%);
    bottom: 40px;
}
.swiper-horizontal>.swiper-pagination-bullets .swiper-pagination-bullet,
.swiper-pagination-horizontal.swiper-pagination-bullets .swiper-pagination-bullet{
    width: 6px;
    height: 6px;
    background-color: #FFFFFF;
    border-radius: 50%;
    margin: 0 3px;
    opacity: 1;
    align-items: center;
}
.swiper-horizontal>.swiper-pagination-bullets .swiper-pagination-bullet.swiper-pagination-bullet-active,
.swiper-pagination-horizontal.swiper-pagination-bullets .swiper-pagination-bullet.swiper-pagination-bullet-active{
    background-color: #E60012;
    width: 8px;
    height: 8px;
    margin-bottom: -1px;
}


@media only screen and (min-width: 1000px) and (max-width: 1440px) {
    .swiper-slide-content{
        width: 900px;
    }
    .swiper-slide-content .swiper-slide-title{
        font-size: 36px;
    }
    .swiper-slide-content .swiper-slide-desc{
        font-size: 16px;
        line-height: 24px;
        margin-top: 16px;
    }
    .swiper-slide-content .swiper-slide-btn{
        margin-top: 30px;
    }
}
@media only screen and (max-width: 1000px) {
    .swiper-slide-content{
        width: 700px;
    }
    .swiper-slide-content .swiper-slide-title{
        font-size: 24px;
    }
    .swiper-slide-content .swiper-slide-desc{
        font-size: 12px;
        line-height: 18px;
        margin-top: 6px;
    }
    .swiper-slide-content .swiper-slide-btn{
        margin-top: 10px;
    }
    .swiper-slide-content .swiper-slide-btn .swiper-slide-btn-item{
        width: 120px;
        height: 40px;
        font-size: 14px;
        line-height: 40px;
    }
    .swiper-slide-content .swiper-slide-btn .swiper-slide-btn-item img{
        width: 20px;
        height: 12px;
        margin-left: 0;
    }
}


.service-wrap{
    width: 100%;
    position: relative;
    background: #EFEFEF;
}
.service-bg{
    width: 100%;
    aspect-ratio: 1920 / 587;
    position: absolute;
    top: 0;
    left: 0;
    background: url("../images/service-bg.webp") no-repeat center center;
    background-size: cover;
}
.service{
    width: 1200px;
    margin: 0 auto;
    padding-top: 80px;
    position: relative;
}
.index-title{
    font-size: 16px;
    color: #E60012;
    line-height: 18px;
    position: relative;
    padding-left: 40px;
}
.index-title::after{
    content: "";
    width: 30px;
    height: 2px;
    background: #E60012;
    position: absolute;
    top: 8px;
    left: 0;
}
.service .service-title-wrap{
    margin-top: 30px;
    display: flex;
    justify-content: space-between;
}
.service .service-title{
    font-weight: bold;
    font-size: 50px;
    color: #FFFFFF;
    line-height: 60px;
}
.service .service-more{
    width: 150px;
    height: 45px;
    border: 1px solid #FFFFFF;
}
.service .service-more a{
    display: block;
    font-size: 16px;
    color: #FFFFFF;
    line-height: 45px;
    text-align: center;
}
.service .service-more a img{
    margin-left: 10px;
}
.service .service-desc{
    font-size: 16px;
    color: rgba(255, 255, 255, .7);
    line-height: 24px;
    margin-top: 30px;
}
.service .service-list{
    margin-top: 80px;
    display: flex;
    justify-content: space-between;
}
.service .service-list .service-item{
    width: 32%;
    aspect-ratio: 1 / 1;
    background-color: #ffffff;
    position: relative;
    padding: 30px;
    cursor: pointer;
}
.service .service-list .service-item::after{
    content: "";
    border-bottom: 74px solid #EFEFEF;
    border-left: 74px solid transparent;
    position: absolute;
    bottom: 0;
    right: 0;
}
.service .service-list .service-item .service-item-num{
    font-size: 16px;
    color: #666666;
    line-height: 18px;
    position: relative;
    padding-left: 40px;
}
.service .service-list .service-item .service-item-num::after{
    content: "";
    width: 30px;
    height: 2px;
    background: #666666;
    position: absolute;
    top: 8px;
    left: 0;
}
.service .service-list .service-item .service-item-icon{
    width: 55px;
    height: 55px;
    margin-top: 33%;
}
.service .service-list .service-item .service-item-icon img{
    width: 100%;
    height: 100%;
}
.service .service-list .service-item .service-item-icon img.active{
    display: none;
}
.service .service-list .service-item .service-item-title{
    margin-top: 40px;
    font-weight: bold;
    font-size: 24px;
    color: #1A1A1A;
    line-height: 27px;
}
.service .service-list .service-item:hover .service-item-icon img.normal{
    display: none;
}
.service .service-list .service-item:hover .service-item-icon img.active{
    display: inline-block;
}


@media only screen and (min-width: 1000px) and (max-width: 1440px) {
    .service{
        width: 900px;
        padding-top: 60px;
    }
    .service .service-title-wrap{
        margin-top: 20px;
    }
    .service .service-title{
        font-size: 36px;
        line-height: 44px;
    }
    .service .service-desc{
        font-size: 14px;
        line-height: 21px;
        margin-top: 20px;
    }
    .service .service-list{
        margin-top: 60px;
    }
    .service .service-list .service-item{
        padding: 20px;
    }
    .service .service-list .service-item .service-item-num{
        padding-left: 35px;
    }
    .service .service-list .service-item .service-item-num::after{
        width: 25px;
    }
    .service .service-list .service-item .service-item-icon{
        width: 50px;
        height: 50px;
    }
    .service .service-list .service-item .service-item-title{
        margin-top: 30px;
        font-size: 20px;
    }
    .service .service-list .service-item::after{
        border-width: 60px;
    }
}
@media only screen and (max-width: 1000px) {
    .service{
        width: 700px;
        padding-top: 40px;
    }
    .service .service-title-wrap{
        margin-top: 10px;
    }
    .service .service-title{
        font-size: 26px;
        line-height: 34px;
    }
    .service .service-desc{
        font-size: 12px;
        line-height: 18px;
        margin-top: 15px;
    }
    .service .service-list{
        margin-top: 40px;
    }
    .service .service-list .service-item{
        padding: 10px;
    }
    .service .service-list .service-item .service-item-num{
        padding-left: 30px;
    }
    .service .service-list .service-item .service-item-num::after{
        width: 20px;
    }
    .service .service-list .service-item .service-item-icon{
        width: 40px;
        height: 40px;
    }
    .service .service-list .service-item .service-item-title{
        margin-top: 20px;
        font-size: 16px;
    }
    .service .service-list .service-item::after{
        border-width: 40px;
    }
}


.about-wrap{
    background: #EFEFEF;
    padding: 80px 0;
}
.about{
    width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.about .about-left{
    width: 50%;
}
.about .about-title{
    font-weight: bold;
    font-size: 50px;
    color: #1A1A1A;
    line-height: 60px;
    margin-top: 30px;
}
.about .about-desc{
    font-size: 16px;
    color: #666666;
    line-height: 24px;
    margin-top: 30px;
}
.about .about-more{
    width: 150px;
    height: 45px;
    border: 1px solid #C4C4C4;
    margin-top: 60px;
}
.about .about-more a{
    display: block;
    font-size: 16px;
    color: #666666;
    line-height: 45px;
    text-align: center;
}
.about .about-more a img{
    margin-left: 10px;
}
.about .about-right{
    width: 46%;
}
.about .about-right .about-right-wrap{
    width: calc( 100% - 30px );
    aspect-ratio: 540 / 520;
    border: 1px solid #B4B4B4;
    position: relative;
}
.about .about-right .about-right-wrap::after{
    content: "";
    width: 100%;
    height: 115px;
    position: absolute;
    bottom: 0;
    left: 0;
    background: #E60012;
}
.about .about-video-wrap{
    width: 100%;
    position: absolute;
    top: 30px;
    left: -30px;
    aspect-ratio: 540 / 460;
    z-index: 1;
}
.about .about-video-wrap .about-img{
    width: 100%;
    position: relative;
}
.about .about-video-wrap .about-img img{
    width: 100%;
    height: 100%;
}
.about .about-video-wrap .about-img .about-img-icon{
    width: 46px;
    height: 46px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
}
.about .about-video-wrap .about-img .about-img-icon img{
    width: 46px;
    height: 46px;
}
.about .about-video-wrap .about-img .about-img-icon .about-img-icon-text{
    font-size: 12px;
    color: #FFFFFF;
    line-height: 18px;
    text-align: center;
    margin-top: 22px;
}
.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-engineering{
    width: 1200px;
    margin: 80px auto 0;
    display: flex;
    justify-content: space-between;
}
.about-engineering .about-engineering-item{
    width: 24%;
    position: relative;
    z-index: 1;
    padding: 30px 20px 0 30px;
    cursor: pointer;
}
.about-engineering .about-engineering-item .about-engineering-item-img{
    width: 60px;
    height: 60px;
}
.about-engineering .about-engineering-item .about-engineering-item-img img{
    width: 100%;
    height: 100%;
    transition: all 0.5s;
}
.about-engineering .about-engineering-item .about-engineering-item-num{
    font-weight: bold;
    font-size: 50px;
    color: #1A1A1A;
    line-height: 56px;
    text-align: right;
    margin-top: 40px;
}
.about-engineering .about-engineering-item .about-engineering-item-title{
    font-size: 18px;
    color: #666666;
    line-height: 20px;
    text-align: right;
    margin-top: 10px;
}
.about-engineering .about-engineering-item .about-engineering-item-bg{
    width: 100%;
    height: 160px;
    position: absolute;
    top: 0;
    left: 0;
    background: #FFFFFF;
    z-index: -1;
}
.about-engineering .about-engineering-item:hover .about-engineering-item-img img{
    transform: rotateY(180deg);
}


@media only screen and (min-width: 1000px) and (max-width: 1440px) {
    .about-wrap{
        padding: 60px 0;
    }
    .about{
        width: 900px;
    }
    .about .about-title{
        margin-top: 20px;
        font-size: 36px;
        line-height: 44px;
    }
    .about .about-desc{
        font-size: 14px;
        line-height: 21px;
        margin-top: 20px;
    }
    .about .about-more{
        margin-top: 40px;
    }
    .about .about-video-wrap{
        top: 20px;
        left: -20px;
    }
    .about-engineering{
        width: 900px;
        margin-top: 60px;
    }
    .about-engineering .about-engineering-item{
        padding: 20px 15px 0 20px;
    }
    .about-engineering .about-engineering-item .about-engineering-item-img{
        width: 50px;
        height: 50px;
    }
    .about-engineering .about-engineering-item .about-engineering-item-num{
        font-size: 36px;
        line-height: 46px;
        margin-top: 30px;
    }
    .about-engineering .about-engineering-item .about-engineering-item-title{
        font-size: 14px;
        margin-top: 5px;
    }
    .about-engineering .about-engineering-item .about-engineering-item-bg{
        height: 123px;
    }
}
@media only screen and (max-width: 1000px) {
    .about-wrap{
        padding: 40px 0;
    }
    .about{
        width: 700px;
    }
    .about .about-title{
        margin-top: 10px;
        font-size: 26px;
        line-height: 30px;
    }
    .about .about-desc{
        font-size: 12px;
        line-height: 18px;
        margin-top: 10px;
    }
    .about .about-more{
        width: 120px;
        height: 40px;
        margin-top: 20px;
    }
    .about .about-more a{
        font-size: 14px;
        line-height: 40px;
    }
    .about .about-more a img{
        margin-left: 5px;
    }
    .about .about-video-wrap{
        top: 20px;
        left: -20px;
    }
    .about-engineering{
        width: 700px;
        margin-top: 40px;
    }
    .about-engineering .about-engineering-item{
        padding: 15px 10px 0 15px;
    }
    .about-engineering .about-engineering-item .about-engineering-item-img{
        width: 40px;
        height: 40px;
    }
    .about-engineering .about-engineering-item .about-engineering-item-num{
        font-size: 26px;
        line-height: 36px;
        margin-top: 20px;
    }
    .about-engineering .about-engineering-item .about-engineering-item-title{
        font-size: 12px;
        margin-top: 0;
    }
    .about-engineering .about-engineering-item .about-engineering-item-bg{
        height: 93px;
    }
}


.product{
    width: 1200px;
    margin: 80px auto;
}
.product .product-title-wrap{
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-top: 30px;
}
.product .product-title{
    font-weight: bold;
    font-size: 50px;
    color: #1A1A1A;
    line-height: 56px;
}
.product .product-more{
    width: 150px;
    height: 45px;
    border: 1px solid #C4C4C4;
}
.product .product-more a{
    display: block;
    font-size: 16px;
    color: #666666;
    line-height: 45px;
    text-align: center;
}
.product .product-more a img{
    margin-left: 10px;
}

.product .product-list{
    display: flex;
    flex-wrap: wrap;
}
.product .product-list .product-item{
    width: 32%;
    margin-right: 2%;
    margin-top: 30px;
}
.product .product-list .product-item:nth-child(3n){
    margin-right: 0;
}
.product .product-list .product-item .product-item-video{
    width: 100%;
    aspect-ratio: 1 / 1; /* 1:1 的宽高比，即高度等于宽度 */
    position: relative;
    overflow: hidden;
}
.product .product-list .product-item .product-item-video img{
    width: 100%;
    height: 100%;
}
.product .product-list .product-item .product-item-video .product-item-video-icon{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-color: rgba(0,0,0,.4);
    display: none;
}
.product .product-list .product-item .product-item-video .product-item-video-icon img{
    width: 50px;
    height: 50px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.product .product-list .product-item .product-item-title{
    font-weight: bold;
    font-size: 20px;
    color: #1A1A1A;
    line-height: 27px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    margin: 10px 0;
}
.product .product-list .product-item .product-item-desc{
    font-size: 16px;
    color: #666666;
    line-height: 24px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.product .product-list .product-item:hover .product-item-video .product-item-video-icon{
    display: block;
}


@media only screen and (min-width: 1000px) and (max-width: 1440px) {
    .product{
        width: 900px;
        margin: 60px auto;
    }
    .product .product-title-wrap{
        margin-top: 20px;
    }
    .product .product-title{
        font-size: 36px;
        line-height: 44px;
    }
    .product .product-list .product-item .product-item-title{
        font-size: 16px;
        line-height: 24px;
        margin: 5px 0;
    }
    .product .product-list .product-item .product-item-desc{
        font-size: 14px;
        line-height: 21px;
    }
}
@media only screen and (max-width: 1000px) {
    .product{
        width: 700px;
        margin: 40px auto;
    }
    .product .product-title-wrap{
        margin-top: 10px;
    }
    .product .product-title{
        font-size: 26px;
        line-height: 34px;
    }
    .product .product-list .product-item{
        margin-top: 20px;
    }
    .product .product-list .product-item .product-item-title{
        font-size: 14px;
        line-height: 21px;
        margin: 2px 0;
    }
    .product .product-list .product-item .product-item-desc{
        font-size: 12px;
        line-height: 18px;
    }
    .product .product-list .product-item .product-item-video .product-item-video-icon img{
        width: 40px;
        height: 40px;
    }
    .product .product-more{
        width: 120px;
        height: 40px;
    }
    .product .product-more a{
        font-size: 14px;
        line-height: 40px;
    }
}


.production-wrap{
    width: 100%;
    aspect-ratio: 1920 / 800;
    background-size: cover;
    padding-top: 80px;
}
.production{
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    position: relative;
}
.production .production-title{
    font-weight: bold;
    font-size: 50px;
    color: #FFFFFF;
    line-height: 60px;
    margin-top: 30px;
}
.production .production-content{
    width: 45%;
    position: absolute;
    bottom: 80px;
    right: 0;
}
.production .production-content .production-desc{
    font-size: 16px;
    color: #FFFFFF;
    line-height: 24px;
}
.production .production-content .production-more{
    border-top: 1px solid #FFFFFF;
    border-bottom: 1px solid #FFFFFF;
    margin-top: 30px;
}
.production .production-content .production-more a{
    display: flex;
    line-height: 57px;
    justify-content: space-between;
    align-items: center;
    color: #FFFFFF;
}
.production .production-content .production-more a img{
    width: 14px;
    height: 16px;
}


@media only screen and (min-width: 1000px) and (max-width: 1440px) {
    .production-wrap{
        padding-top: 60px;
    }
    .production{
        width: 900px;
    }
    .production .production-title{
        font-size: 36px;
        line-height: 44px;
        margin-top: 20px;
    }
    .production .production-content{
        bottom: 60px;
    }
    .production .production-content .production-desc{
        font-size: 14px;
        line-height: 21px;
    }
    .production .production-content .production-more{
        margin-top: 20px;
    }
    .production .production-content .production-more a{
        line-height: 50px;
    }
}
@media only screen and (max-width: 1000px) {
    .production-wrap{
        padding-top: 40px;
    }
    .production{
        width: 700px;
    }
    .production .production-title{
        font-size: 26px;
        line-height: 34px;
        margin-top: 10px;
    }
    .production .production-content{
        bottom: 40px;
    }
    .production .production-content .production-desc{
        font-size: 12px;
        line-height: 18px;
    }
    .production .production-content .production-more{
        margin-top: 10px;
    }
    .production .production-content .production-more a{
        line-height: 40px;
    }
}

.news{
    width: 1200px;
    margin: 80px auto;
}
.news .news-title-wrap{
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-top: 30px;
}
.news .news-title{
    font-weight: bold;
    font-size: 50px;
    color: #1A1A1A;
    line-height: 56px;
}
.news .news-more{
    width: 150px;
    height: 45px;
    border: 1px solid #E60012;
}
.news .news-more a{
    display: block;
    font-size: 16px;
    color: #E60012;
    line-height: 45px;
    text-align: center;
}
.news .news-more a img{
    margin-left: 10px;
}
.news .news-list{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
.news .news-list .news-item{
    width: 49%;
    margin-top: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #ECECEC;
}
.news .news-list .news-item a{
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.news .news-list .news-item .news-item-video{
    width: 180px;
    aspect-ratio: 1 / 1;
    position: relative;
}
.news .news-list .news-item .news-item-video img{
    width: 100%;
    height: 100%;
}
.news .news-list .news-item .news-item-video .news-item-video-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-video .news-item-video-icon img{
    width: 20px;
    height: 20px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.news .news-list .news-item .news-item-content{
    width: calc( 100% - 200px );
}
.news .news-list .news-item .news-item-date{
    font-size: 12px;
    color: #666666;
    line-height: 14px;
}
.news .news-list .news-item .news-item-title{
    font-weight: bold;
    font-size: 18px;
    color: #1A1A1A;
    line-height: 27px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    margin-top: 10px;
}
.news .news-list .news-item .news-item-desc{
    font-size: 12px;
    color: #666666;
    line-height: 18px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    margin-top: 10px;
}
.news .news-list .news-item .news-item-more{
    font-size: 14px;
    color: #E60012;
    line-height: 16px;
    margin-top: 20px;
}
.news .news-list .news-item:hover .news-item-video .news-item-video-icon{
    display: block;
}


@media screen and (min-width: 1000px) and (max-width: 1440px) {
    .news{
        width: 900px;
        margin: 60px auto;
    }
    .news .news-title-wrap{
        margin-top: 20px;
    }
    .news .news-title{
        font-size: 36px;
        line-height: 44px;
    }
    .news .news-list{
        margin-top: 20px;
    }
    .news .news-list .news-item{
        padding-bottom: 20px;
        margin-top: 20px;
    }
    .news .news-list .news-item .news-item-video{
        width: 135px;
    }
    .news .news-list .news-item .news-item-content{
        width: calc(100% - 150px);
    }
    .news .news-list .news-item .news-item-title{
        font-size: 16px;
        line-height: 21px;
        margin-top: 5px;
    }
    .news .news-list .news-item .news-item-desc{
        margin-top: 5px;
    }
    .news .news-list .news-item .news-item-more{
        margin-top: 0;
        font-size: 12px;
        line-height: 14px;
    }
}

@media only screen and (max-width: 1000px) {
    .news{
        width: 700px;
        margin: 40px auto;
    }
    .news .news-title-wrap{
        margin-top: 10px;
    }
    .news .news-title {
        font-size: 26px;
        line-height: 34px;
    }
    .news .news-more {
        width: 120px;
        height: 40px;
    }
    .news .news-more a {
        font-size: 14px;
        line-height: 40px;
    }
    .news .news-list{
        margin-top: 10px;
    }
    .news .news-list .news-item{
        padding-bottom: 10px;
        margin-top: 10px;
    }
    .news .news-list .news-item .news-item-video{
        width: 105px;
    }
    .news .news-list .news-item .news-item-content{
        width: calc(100% - 115px);
    }
    .news .news-list .news-item .news-item-title{
        font-size: 14px;
        line-height: 18px;
        margin-top: 0;
    }
    .news .news-list .news-item .news-item-desc{
        margin-top: 0;
    }
    .news .news-list .news-item .news-item-more{
        margin-top: 0;
        font-size: 12px;
        line-height: 14px;
    }
}