.product_index_page {
    width: 100%;
    height: auto
}

.product_index_page .title {
    font-size: 36px;
    line-height: 50px;
    font-weight: 700;
    color: #191919;
    margin-bottom: 40px;
    margin-top: 66px
}

.product_index_page .subtitle {
    display: block;
    font-size: 20px;
    line-height: 28px;
    font-weight: 800;
    color: #191919;
    margin-top: 20px;
    margin-bottom: 10px
}

.product_index_page .desc {
    font-size: 16px;
    line-height: 22px;
    color: #191919;
    opacity: .69;
    font-weight: 500
}

.product_index_page .buy {
    width: 100px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background-color: #f4f4f4;
    border-radius: 20px;
    color: #0d7fef;
    font-size: 16px;
    font-weight: 700
}

.product_index_page .buy:hover {
    background-color: #efefef;
    color: #359ffc
}

.product_index_page nav {
    width: 100%;
    min-width: 1280px;
    height: 100px;
    background-color: #f8f8f8
}

.product_index_page ul.nav {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    flex-wrap: nowrap;
    align-items: center
}

.product_index_page ul.nav li {
    font-size: 18px;
    color: #111;
    font-weight: 500;
    cursor: pointer
}

.product_index_page ul.nav li.active, .product_index_page ul.nav li:hover {
    font-weight: 800
}

.product_index_page .content {
    width: 1280px;
    margin: 0 auto;
    padding-bottom: 104px;
}

.product_index_page .content .con {
    display: flex;
    flex-wrap: wrap
}

.product_index_page .content .case.new::before {
    content: '新品';
    position: absolute;
    left: 30px;
    top: 30px;
    width: 51px;
    line-height: 18px;
    font-size: 13px;
    color: #db0000;
    font-weight: 800;
    border: 1px solid #db0000;
    border-radius: 11px;
    text-align: center;
    padding: 1px 0;
    background-color: #FFF5F5
}

.product_index_page .content .case {
    width: 300px;
    margin-right: 45px;
    position: relative
}

.product_index_page .content .case:nth-child(3n) {
    margin-right: 0
}

.product_index_page .content .case a.img:hover > img {
    transform: scale(1.05);
    transform-origin: center
}

.product_index_page .content .case .img {
    display: block;
    width: 300px;
    height: 300px;
    line-height: 300px;
    background-color: #f5f5f5;
    text-align: center
}

.product_index_page .content .case .img img {
    transition: all .3s ease-in-out
}

.product_index_page .content .case .buyWrapper {
    height: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 54px
}