.product_detail_nav {
    padding: 28px 0;

}

.product_detail_nav a {
    font-weight: 400;
    font-size: 14px;
    color: #999999;
    text-decoration: none;
}


.product_detail_nav .product_detail_active {
    color: #222222;
}

.product_detail_bg {
    background-color: #f6f6f6;
    padding-bottom: 100px;
}

.product_detail_box {
    display: flex;
    justify-content: space-between;

}

.product_detail_box_left {
    width: 900px;
    background: #FFFFFF;
    border-radius: 10px;
    padding: 30px;
    border: 1px solid #E8E8E8;
}

.product_detail_box_right {
    width: 270px;
    background: #FFFFFF;
    border-radius: 10px;
    border: 1px solid #E8E8E8;
}

.product_detail_box_left_info {
    display: flex;
    justify-content: space-between;
}

.product_detail_box_left_info_txt {
    padding:0px 40px;
}

.product_detail_box_left_info_img {
    width: 400px;
    height:280px;
}

.product_detail_box_left_info_txt_content {
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 14px;
    color: #222222;
    line-height: 32px;
    padding: 20px 10px;
}

.product_detail_box_left_info_txt_btn {
    width: 217px;
    height: 52px;
    border-radius: 6px;
    border: 1px solid #CC0001;
    color: #CC0001;
    font-weight: 400;
    line-height: 52px;
    text-align: center;
}

.product_detail_box_left_txt_title {
    width: 840px;
    border-bottom: 1px solid #DDDDDD;
    margin-top: 30px;
}

.product_detail_box_left_txt_title div {
    width: 133px;
    height: 53px;
    background: #CC0001;
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 18px;
    color: #FEFEFE;
    line-height: 53px;
    text-align: center;
    letter-spacing: 1px;
}


.product_detail_box_left_txt_content {
    padding: 50px 0;
    display: flex;
    justify-content: center;
}

.product_detail_box_right {
    align-self: baseline
}

.product_detail_box_right_title {
    height: 65px;
    text-align: center;
    line-height: 65px;
    border-bottom: 1px solid #E8E8E8;
}

.product_detail_box_right_content {
    padding: 20px 30px;
}

.product_detail_box_right_item {
    display: block;
    text-decoration: none;
}

.product_detail_box_right_item_img {
    position: relative;
}

.product_detail_box_right_item_img img {
    width: 200px;
    height: 140px;
}

.product_detail_box_right_item_img_number {
    width: 42px;
    height: 42px;
    padding: 5px;
    background: linear-gradient(to bottom right, #CC0001 50%, transparent 50%);
    font-family: Microsoft YaHei;
    font-weight: bold;
    font-size: 14px;
    color: #FFFFFF;
    line-height: 20px;
    position: absolute;
    top: 0;
    left: 0;
}

.product_detail_box_right_item_title {
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 14px;
    color: #222222;
    margin-top: 12px;
}

.product_detail_box_right_item:not(:first-child) {
    margin-top: 24px;
}


@media screen and (max-width: 750px) {
    .product_detail_bg {
        padding-bottom: 1rem;
    }

    .product_detail_box,
    .product_detail_box_left_info {
        flex-direction: column;
        align-items: center;
    }

    .product_detail_box_left {
        width: 6.9rem;
        border-radius: .1rem;
        border: .01rem solid #E8E8E8;
        padding: .3rem;
    }

    .product_detail_box_right {
        margin: 0 auto;
        width: 6.9rem;
        margin-top: .5rem;
    }

    .product_detail_nav {
        padding: .3rem;
    }

    .product_detail_box_left_info_img {
        width: 4rem;
        height: 2.8rem;
    }

    .product_detail_box_left_info_txt {
        padding: 0px;
    }

    .product_detail_box_left_info_txt_content {
        padding: .4rem .16rem;
    }

    .product_detail_box_left_info_txt_btn {
        width: 6.26rem;
        height: 1.04rem;
        line-height: 1.04rem;
        border-radius: .06rem;
        border: .01rem solid #CC0001;
        margin-top: .3rem;
    }

    .product_detail_box_left_txt_title {
        width: 6.3rem;
    }

    .product_detail_box_left_txt_title div {
        width: 2.66rem;
        line-height: 1.06rem;
        height: 1.06rem;
        font-size: .36rem;
        background: #CC0001;
    }

    .product_detail_box_left_txt_content {
        text-align: center;
    }

    .product_detail_box_left_txt_content img {
        width: 6rem !important;
        height: auto !important;
    }

    .product_detail_box_left_txt_content {
        padding-top: .5rem;
        padding-bottom: .2rem;
    }

    .product_detail_box_right_title {
        height: 1.32rem;
        font-size: .45rem;
        line-height: 1.32rem;
        letter-spacing: 2px;
    }

    .product_detail_box_right_content {
        padding: .5rem .8rem;
    }

    .product_detail_box_right_item_img img {
        width: 5.25rem;
        height: 3.5rem;
    }

    .product_detail_box_right_item_img_number {
        width: 1.05rem;
        height: 1.05rem;
        font-size: .35rem;
        padding: .1rem;
    }

    .product_detail_box_right_item_title {
        font-size: .35rem;
        margin-top: .3rem;
    }

    .product_detail_box_right_item:not(:first-child) {
        margin-top: .6rem;
    }
}