.proD_top {
    justify-content: space-between;
}

.proD_top_left {
    width: 46.2%;
    box-shadow: 4px 4px 4px 0px rgba(0, 0, 0, 0.1);
    border-radius: 20px;
}

.proD_top_left_swi .imgBox {
    border-radius: 20px;
    padding-bottom: 100%;
}

.proD_top_right {
    width: 51.35%;
}

.proD_top_right .big_title,
.proD_top_right .rec_desc {
    text-align: left;
}

.proD_top_right .rec_btn {
    margin-top: 20px;
}

.proD_top_right .rec_btn a {
    padding: 0 44px;
    height: 48px;
    line-height: 48px;
}

.proD_main {
    margin-top: 38px;
}

.proD_main_desc {
    margin-top: 10px;
}

.proD_main_desc,
.proD_main_desc * {
    font-family: Arial-Regular;
    font-weight: 400;
    font-size: 16px;
    color: #666666;
    line-height: 2;
}

.proD_down_main {
    flex-wrap: wrap;
    margin-top: 5%;
}

.proD_down_div {
    width: calc((100% - 50px) / 3);
    margin-right: 25px;
    position: relative;
}

.proD_down_main .proD_down_div:nth-child(3n) {
    margin-right: 0;
}

.proD_down_div .imgBox {
    padding-bottom: 70%;
}

.proD_down_text {
    background: #FF5E14;
    padding: 40px;
    justify-content: center;
    width: 100%;
    height: 0;
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
}

.proD_down_text>div {
    width: 100%;
}

.proD_down_tit {
    font-family: Arial-Bold;
    font-weight: bold;
    font-size: 32px;
    color: #FFFFFF;
    text-align: center;
}


.proD_down_download_btn {
    justify-content: center;
    width: 100%;
    height: 56px;
    line-height: 56px;
    font-family: Arial-Regular;
    font-weight: 400;
    font-size: 16px;
    color: #333333;
    background: #FFFFFF;
    border-radius: 4px 4px 4px 4px;
    margin-top: 30px;
}

.proD_down_download_btn::after {
    content: '';
    display: inline-block;
    width: 22px;
    height: 22px;
    background: url('img/down.png') no-repeat;
    background-size: 100% 100%;
    margin-left: 15px;
}

.proD_down_div:hover .proD_down_text{
    opacity: 1;
    height: 100%;
}

@media only screen and (max-width: 950px) {
    .proD_top{
        flex-wrap: wrap;
    }

    .proD_top_left{
        margin-bottom: 20px;
        width: 100%;
    }

    .proD_top_right{
        width: 100%;
    }

    .proD_down_div{
        width: 100%;
        margin-right: 0;
        margin-bottom: 20px;
    }
}