.top-banner-box {
    width: 100%;
    height: 500px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.top-banner-box .top-banner-img{
    width: 100%;
    height: 500px;
    z-index: -1;
    position: absolute;
    top: 0;
    left: 0; 
    object-fit: cover;
    overflow: hidden;
    animation: banner1 3s linear;
    -webkit-animation: banner1 3s linear; 
    animation-iteration-count: 1;
    animation-fill-mode: forwards;
}
.top-banner-box .top-banner-cn {
    margin-bottom: 10px;
    font-size: 70px;
    font-family: SourceHanSansCN-Medium, SourceHanSansCN;
    font-weight: 500;
    color: #FFFFFF;
    line-height: 70px;
}
.top-banner-box .top-banner-en {
    font-size: 28px;
    font-family: SourceHanSansCN-Light, SourceHanSansCN;
    font-weight: 300;
    color: #FFFFFF;
    line-height: 28px;
}

/* 产品列表 */
.product-center-list1 {
    padding: 110px 0 110px 0;
    background-color: #ffffff;
}
.product-list {
    margin-bottom: 50px;
    display: flex;
    flex-direction: column;
}
.product-list .product-title {
    width: 1200px;
    padding: 20px 0;
    margin-bottom: 60px;
    font-size: 28px;
    font-family: SourceHanSansCN-Normal, SourceHanSansCN;
    font-weight: 400;
    color: #111111;
    line-height: 28px;
    border-bottom: 1px solid #111111;
}
.product-list .product-title .text {
    margin-left: 20px;
    font-size: 18px;
    font-family: SourceHanSansCN-Normal, SourceHanSansCN;
    font-weight: 400;
    color: #515A5A;
    line-height: 18px;
}

.product-box {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}
.product-box .series-item-box{
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 270px;
    height: 346px;
    transition: all 1s;
    border-bottom: 1px solid #ddd;
    margin: 0 40px 40px 0;
    background-color: #fff;
    color: #0C0C0B;
    cursor: pointer;
}
.product-box .series-item-box .item-name {
    font-size: 16px;
    font-family: SourceHanSansCN-Light, SourceHanSansCN;
    font-weight: 300;
    color: #111111;
    line-height: 18px;
}
.product-box .series-item-box:hover{
    color: #0C0C0B;
    border-bottom: 1px solid #0C0C0B;
    box-shadow: 0px 2px 8px 0px rgba(156, 156, 156, 0.5);
}
.product-box .series-item-box:nth-of-type(4n){
    margin-right: 0;
}
.product-box .item-img-box{
    width: 270px;
    height: 270px;
    overflow: hidden;
    margin-bottom: 30px;
}

.product-box .product-item-img{
    width: 100%;
    height: 100%;
    transition: all 1s;
}
.product-box .series-item-box:hover .product-item-img{
    transform: scale(1.1);
}