.main {
    padding: 4.75rem 7.5rem;
    /* background-color: #ECEFF4; */
    background-color: #4c6197;
    position: relative;
}

.layui-nav .layui-nav-item a {
    color: #000000;
}

.layui-nav-item {
    background-color: #fff;
}

.layui-nav {
    width: auto;
    background-color: #fff;
    text-align: center;
    /* white-space: nowrap; */
    /* word-wrap: normal; */
    /* word-break: normal; */
    /* overflow-x: auto; */
    /* scrollbar-width: none; */
    /* -ms-overflow-style: none; */
}

.layui-nav::-webkit-scrollbar {
    width: 0;
    height: 0;
    display: none;
    opacity: 0;
    background-color: transparent;
}

.product_box {
    margin: auto;
    /* padding-bottom: 2.75rem; */
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    clear: both;
    transition: all 0.35s;
}

.product_box_roll {
    display: block !important;
    flex-wrap: nowrap;
    justify-content: left;
    align-items: center;
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
}

.product_item {
    cursor: pointer;
    margin-left: 5rem;
    margin-right: 5rem;
    display: inline-block;
    transition: all 0.35s;
    /* min-width: 10.3125rem; */
    width: calc(100% / 3 - 10rem);
}

.product_item:last-child {
    /* padding-right: 0; */
}

.clear {
    clear: both;
}

.product_item img {
    max-height: 15.625rem;
}

.product_title {
    margin-top: 1.5rem;
    font-size: 1em;
    /* color: #999999; */
    color: #fff;
}

.list_cover_bg {
    height: 15.625rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.list_cover_bg_on {
    transform: translateY(2.75rem);
    position: relative;
    z-index: 10;
}

.list_cover_bg_on .product_title {
    font-size: 1em;
    font-weight: bold;
    color: #333333;
}

.list_cover_bg_on .jt_box {
    opacity: 1;
}

.list_cover_bg_on .list_cover_bg::after {
    opacity: 1;
}

.list_cover_bg::after {
    content: '';
    display: block;
    width: 11.875rem;
    height: 11.875rem;
    border-radius: 100%;
    position: absolute;
    transform: translateX(-50%) translateY(-50%);
    left: 50%;
    top: 50%;
    z-index: -1;
    background-color: #28399C;
    opacity: 0;
    transition: all 0.35s;
}

.main_box {
    margin-bottom: 5rem;
}

.jt_box {
    border-radius: 100%;
    width: 2rem;
    height: 2rem;
    background-color: #28399C;
    margin: 1rem auto 0;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.35s;
    opacity: 0;
    display: none;
}

.layui-nav .layui-this a {
    color: #28399C !important;
    font-weight: bold;
}

.layui-nav .layui-this {
    background-color: #ECEFF4;
    color: #28399C !important;
}

.layui-nav .layui-this:after {
    top: 0;
    bottom: auto;
    width: 100%;
}

.layui-nav .layui-this:after,
.layui-nav-bar {
    top: 0 !important;
    background-color: #28399C !important;
}

.item_a {
    color: #999999 !important;
    cursor: pointer;
}

.pLeft {
    position: absolute;
    top: 50%;
    left: 3.5vw;
    transform: translateY(-50%);
    width: auto;
    height: auto;
    cursor: pointer;
    z-index: 866;
    padding: .5rem;
    margin: -.5rem;
}

.pLeft .pl {
    display: block;
}

.pLeft .plOn {
    display: none;
}

/* .pLeft:hover .pl {
    display: none;
}

.pLeft:hover .plOn {
    display: block;
} */

.pRight {
    position: absolute;
    top: 50%;
    right: 3.5vw;
    transform: translateY(-50%);
    width: auto;
    height: auto;
    cursor: pointer;
    z-index: 866;
    padding: .5rem;
    margin: -.5rem;
}

.pRight .pr {
    display: block;
}

.pRight .prOn {
    display: none;
}

/* .pRight:hover .pr {
    display: none;
}

.pRight:hover .prOn {
    display: block;
} */

.not_show {
    display: none !important;
}

.product_desc {
    width: 100%;
    height: 100%;
    position: absolute;
    z-index: 866;
    left: 0;
    top: 0;
    display: none;
}

.product_desc_bj {
    width: 100%;
    height: 100%;
    position: absolute;
    z-index: -11;
    left: 0;
    top: 0;
    background: #4c6197;
    opacity: 0.8;
}

.filter {
    filter: blur(2px);
}

.product_desc_close {
    position: absolute;
    right: 20px;
    top: 20px;
    z-index: 1;
    cursor: pointer;
    display: none;
}

.product_desc_box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translateX(-50%) translateY(-50%);
    z-index: 99;
    max-width: 100%;
    color: #fff;
}

.product_desc_box>div {
    padding: 0 13.125rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product_desc_img {
    height: 17.1875rem;
    width: auto;
    /* width: 15.625rem;
    height: 15.625rem; */
    margin-right: 7.375rem;
}

.product_desc_value {
    width: 35.625rem;
    flex: 0 0 auto;
}

.product_desc_value h2 {
    font-size: 2.5em;
    color: #FFFFFF;
    margin-bottom: 1.625rem;
}

.product_desc_value p {
    margin-bottom: 1.3125rem
        /* 21px -> 1.3125rem */
    ;
    font-size: .875em;
    color: #FFFFFF;
    line-height: 1.5rem;
}

.product_desc_value a {
    font-size: .875em;
    color: #FFFFFF;
    cursor: pointer;
    text-decoration: none;
}

@media screen and (max-width:48rem) {
    .product_desc_img {
        margin-right: 1.25rem;
    }

    .product_desc_value {
        max-width: 21rem;
    }
}

@media screen and (max-width: 33.75rem) {
    .product_desc {
        width: 100vw;
        height: 100vh;
        position: fixed;
        top: 0;
        left: 0;
        z-index: 900;
    }

    .product_desc_box>div {
        align-items: initial;
        flex-wrap: wrap;
        align-content: space-between;
        padding: 0 1.25rem;
    }

    .product_desc_img {
        margin-right: 0;
    }

    .product_desc_value {
        max-width: calc(100vw - 3.75rem);
        margin: auto;
    }

    .layui-nav-item {
        background-color: transparent !important;
    }

    .item_a {
        padding: .0625rem !important;
    }

    .layui-nav {
        padding: 0 .625rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .product_item {
        margin-left: 1rem;
        margin-right: 1rem;
        width: calc(100% - 2rem) !important;
    }

    .product_item img {
        min-height: 80%;
    }
}

@media screen and (max-width: 64rem) {
    .product_item {
        width: calc(50% - 10rem);
        float: none !important;
        /* margin-right: 0 !important; */
        /* margin-bottom: 4rem !important; */
    }

    .main {
        padding: 2.5rem 3.25rem;
    }

    .product_desc_value h2 {
        font-size: 2em;
        color: #FFFFFF;
        margin-bottom: 1.625rem;
    }

    .product_desc_close {
        display: block;
    }
}