.pre_sale {
        padding: 8rem 0 5rem 0;
    }

    .pre_sale .pre_sale_title {
        margin-bottom: 3rem;
        font-weight: 600;
        font-size: 4.2rem;
        color: #2D3748;
        text-align: center;
        font-style: normal;
        text-transform: none;
        font-family: ROBOTO;
    }

    .pre_sale .pre_sale_list {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }

    .pre_sale .pre_sale_item_title {
        padding: 3.2rem;
        background-color: #1E3A5F;
        font-size: 3.2rem;
        color: #FFFFFF;
        text-align: left;
        font-style: normal;
        text-transform: none;
        font-weight: 600;
    }

    .pre_sale .pre_sale_rxst {
        padding: 3rem;

    }

    .pre_sale .pre_sale_item {
        background: #F2F4F8;
        transition: transform 0.3s ease;
    }

    .pre_sale .pre_sale_item:hover {
        transform: translateY(-1rem);
    }

    .pre_sale .pre_sale_rxst_title {
        font-size: 2.4rem;
        color: #1E3A5F;
        line-height: 2.9rem;
        text-align: left;
        font-style: normal;
        text-transform: none;
        margin-bottom: 1.6rem;
    }

    .pre_sale .pre_sale_rxst ul {
        padding-left: 2.5rem;
    }

    .pre_sale .pre_sale_rxst li {
        list-style: disc;
        font-weight: 400;
        font-size: 1.6rem;
        color: #4A5568;
        line-height: 2.9rem;
        text-align: left;
        font-style: normal;
        text-transform: none;
    }

    .pre_sale .pre_sale_rxst_hx {
        border: 1px solid rgba(30, 58, 95, 0.21);
        margin: 3rem 0;
    }

    .after_sales {
        padding: 8rem 0;
        background-color: #F2F4F8;
    }

    .after_sales .after_sales_title {
        margin-bottom: 3rem;
        font-weight: 600;
        font-size: 4.2rem;
        color: #2D3748;
        text-align: center;
        font-style: normal;
        text-transform: none;
        font-family: ROBOTO;
    }

    .after_sales_commom {
        background: #FFFFFF;
        padding: 3rem;
        background-position: bottom right;
        background-repeat: no-repeat;
        transition: transform 0.3s ease;
    }

    .after_sales_commom:hover {
        transform: translateY(-1rem);
    }

    .after_sales .after_sales_top {
        display: grid;
        grid-template-columns: 1fr 0.25fr;
        gap: 2rem;
    }

    .after_sales .after_sales_titlecom {
        margin-bottom: 1.6rem;
        font-weight: bold;
        font-size: 2.4rem;
        color: #1E3A5F;
        text-align: left;
        font-style: normal;
        text-transform: none;
    }

    .after_sales .after_sales_desccom {
        font-size: 1.6rem;
        color: #4A5568;
        line-height: 2.6rem;
        text-align: left;
        font-style: normal;
        text-transform: none;
    }

    .after_sales .after_sales_top_left {
        display: flex;
        flex-direction: column;
        gap: 2rem;
    }

    .after_sales .after_sales_top_left_bom {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .after_sales .after_sales_top_left_top {
        background-image: url("../image/service/k1.png");
    }

    .after_sales .after_sales_top_left_bom_left {
        background-image: url("../image/service/k2.png");
    }

    .after_sales .after_sales_top_left_bom_right {
        background-image: url("../image/service/k3.png");
    }

    .after_sales .after_sales_top_right {
        background-image: url("../image/service/k4.png");
    }

    .after_sales .after_sales_bom_left {
        background-image: url("../image/service/k5.png");
    }

    .after_sales .after_sales_bom_right {
        background-image: url("../image/service/k6.png");
    }

    .after_sales .after_sales_bom {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
        margin-top: 2rem;
    }

    .download {
        padding: 8rem 0;
    }

    .download .download_title {
        font-weight: 600;
        font-size: 4.2rem;
        color: #2D3748;
        line-height: 50px;
        text-align: center;
        font-style: normal;
        text-transform: none;
        margin-bottom: 3rem;
        font-family: ROBOTO;
    }

    .download .download_item {
        display: flex;
        align-items: center;
        justify-content: space-between;
        background: #F2F4F8;
        padding: 4.5rem 6rem;
        transition: transform 0.3s ease;
    }

    .download .download_item:hover {
        transform: translateY(-1rem);
    }

    .download .download_item_left {
        display: flex;
        align-items: center;
    }

    .download .download_hwj {
        display: none;
    }

    .download .download_hxz {
        display: none;
    }

    .download .download_item_left_img {
        max-width: 4.5rem;
        max-height: 4.6rem;
        margin-right: 5rem;
    }

    .download .download_item_left_img img {
        width: 100%;
        height: 100%;

    }

    .download .download_item_rext {
        padding-left: 5rem;

    }

    .download .download_item_title {
        font-size: 2.4rem;
        color: #1E3A5F;
        font-weight: 600;
        text-align: left;
        font-style: normal;
        text-transform: none;
    }

    .download .download_item_timer {
        display: flex;
        align-items: center;
        margin-top: 1rem;
        font-weight: 400;
        font-size: 1.4rem;
        color: #4A5568;
        text-align: left;
        font-style: normal;
        text-transform: none;
    }

    .download .download_item_sx {
        border-left: 1px solid rgba(30, 58, 95, 0.21);
        width: 1px;
        height: 3.6rem;
    }

    .download .download_item_timer img {
        max-width: 1.6rem;
        max-height: 1.6rem;
        margin-right: 0.8rem;
    }

    .download .download_item_right {
        max-width: 3.3rem;
        max-height: 3.6rem;
    }

    .download .download_item_right img {
        width: 100%;
        height: 100%;
    }

    .download .download_item:hover {
        background: #FFFFFF;
        box-shadow: 0px 4px 16px 0px rgba(113, 128, 150, 0.42);
    }

    .download .download_item:hover .download_swj {
        display: none;
    }

    .download .download_item:hover .download_sxz {
        display: none;
    }

    .download .download_item:hover .download_hwj {
        display: block;
    }

    .download .download_item:hover .download_hxz {
        display: block;
    }

    .download .download_item:hover .download_item_title {
        color: #E7832B;
    }

    .download .download_list {
        display: flex;
        flex-direction: column;
        gap: 2rem;
    }

    /* ============ service 模块自适应媒体查询 ============ */

    /* ≤1599px */
    @media (max-width: 1599px) {
        .pre_sale {
            padding: 7rem 0 5rem 0;
        }

        .pre_sale .pre_sale_title {
            font-size: 3.6rem;
            margin-bottom: 2.6rem;
        }

        .pre_sale .pre_sale_item_title {
            font-size: 2.8rem;
            padding: 2.8rem;
        }

        .pre_sale .pre_sale_rxst {
            padding: 2.6rem;
        }

        .pre_sale .pre_sale_rxst_title {
            font-size: 2.2rem;
            line-height: 2.7rem;
        }

        .pre_sale .pre_sale_rxst li {
            font-size: 1.5rem;
            line-height: 2.6rem;
        }

        .after_sales {
            padding: 7rem 0;
        }

        .after_sales .after_sales_title {
            font-size: 3.6rem;
            margin-bottom: 2.6rem;
        }

        .after_sales_commom {
            padding: 2.6rem;
        }

        .after_sales .after_sales_titlecom {
            font-size: 2.2rem;
        }

        .after_sales .after_sales_desccom {
            font-size: 1.5rem;
            line-height: 2.4rem;
        }

        .download {
            padding: 7rem 0;
        }

        .download .download_title {
            font-size: 3.6rem;
            margin-bottom: 2.6rem;
        }

        .download .download_item {
            padding: 4rem 5rem;
        }

        .download .download_item_title {
            font-size: 2.2rem;
        }
    }

    /* ≤1439px */
    @media (max-width: 1439px) {
        .after_sales .after_sales_top{
    grid-template-columns: minmax(0, 90rem) 1fr;
        }
        .pre_sale {
            padding: 6rem 0 4rem 0;
        }

        .pre_sale .pre_sale_title {
            font-size: 3.2rem;
            margin-bottom: 2.4rem;
        }

        .pre_sale .pre_sale_item_title {
            font-size: 2.6rem;
            padding: 2.6rem;
        }

        .pre_sale .pre_sale_rxst {
            padding: 2.4rem;
        }

        .pre_sale .pre_sale_rxst_title {
            font-size: 2rem;
            line-height: 2.5rem;
        }

        .pre_sale .pre_sale_rxst li {
            font-size: 1.4rem;
            line-height: 2.4rem;
        }

        .after_sales {
            padding: 6rem 0;
        }

        .after_sales .after_sales_title {
            font-size: 3.2rem;
            margin-bottom: 2.4rem;
        }

        .after_sales_commom {
            padding: 2.4rem;
        }

        .after_sales .after_sales_titlecom {
            font-size: 2rem;
        }

        .after_sales .after_sales_desccom {
            font-size: 1.4rem;
            line-height: 2.2rem;
        }

        .download {
            padding: 6rem 0;
        }

        .download .download_title {
            font-size: 3.2rem;
            margin-bottom: 2.4rem;
        }

        .download .download_item {
            padding: 3.5rem 4rem;
        }

        .download .download_item_title {
            font-size: 2rem;
        }

        .download .download_item_rext {
            padding-left: 4rem;
        }

        .download .download_item_left_img {
            margin-right: 4rem;
        }
    }

    /* ≤1279px */
    @media (max-width: 1279px) {
        .pre_sale {
            padding: 5rem 0 3rem 0;
        }

        .pre_sale .pre_sale_title {
            font-size: 2.8rem;
            margin-bottom: 2rem;
        }

        .pre_sale .pre_sale_item_title {
            font-size: 2.2rem;
            padding: 2.2rem;
        }

        .pre_sale .pre_sale_rxst {
            padding: 2rem;
        }

        .pre_sale .pre_sale_rxst_title {
            font-size: 1.8rem;
            line-height: 2.4rem;
        }

        .pre_sale .pre_sale_rxst li {
            font-size: 1.4rem;
            line-height: 2.2rem;
        }

        .after_sales {
            padding: 5rem 0;
        }

        .after_sales .after_sales_title {
            font-size: 2.8rem;
            margin-bottom: 2rem;
        }

        .after_sales_commom {
            padding: 2rem;
        }

        .after_sales .after_sales_titlecom {
            font-size: 1.8rem;
        }

        .after_sales .after_sales_desccom {
            font-size: 1.4rem;
            line-height: 2rem;
        }

        .download {
            padding: 5rem 0;
        }

        .download .download_title {
            font-size: 2.8rem;
            margin-bottom: 2rem;
        }

        .download .download_item {
            padding: 3rem 3.5rem;
        }

        .download .download_item_title {
            font-size: 1.8rem;
        }

        .download .download_item_rext {
            padding-left: 3rem;
        }

        .download .download_item_left_img {
            margin-right: 3rem;
            max-width: 4rem;
            max-height: 4rem;
        }
    }

    /* ≤1199px */
    @media (max-width: 1199px) {
        .pre_sale {
            padding: 4rem 0 3rem 0;
        }

        .pre_sale .pre_sale_title {
            font-size: 2.4rem;
            margin-bottom: 2rem;
        }

        .pre_sale .pre_sale_list {
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        .pre_sale .pre_sale_item_title {
            font-size: 2rem;
            padding: 2rem;
        }

        .pre_sale .pre_sale_rxst {
            padding: 1.8rem;
        }

        .pre_sale .pre_sale_rxst_title {
            font-size: 1.6rem;
            line-height: 2.2rem;
            margin-bottom: 1.2rem;
        }

        .pre_sale .pre_sale_rxst li {
            font-size: 1.4rem;
            line-height: 2rem;
        }

        .pre_sale .pre_sale_rxst_hx {
            margin: 2rem 0;
        }

        .after_sales {
            padding: 4rem 0;
        }

        .after_sales .after_sales_title {
            font-size: 2.4rem;
            margin-bottom: 2rem;
        }

        .after_sales .after_sales_top {
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        .after_sales .after_sales_top_right {
            min-height: 20rem;
        }

        .after_sales_commom {
            padding: 2rem;
        }

        .after_sales .after_sales_titlecom {
            font-size: 1.6rem;
            margin-bottom: 1.2rem;
        }

        .after_sales .after_sales_desccom {
            font-size: 1.4rem;
            line-height: 2rem;
        }

        .download {
            padding: 4rem 0;
        }

        .download .download_title {
            font-size: 2.4rem;
            margin-bottom: 2rem;
        }

        .download .download_item {
            padding: 2.5rem 3rem;
        }

        .download .download_item_title {
            font-size: 1.6rem;
        }

        .download .download_item_rext {
            padding-left: 2.5rem;
        }

        .download .download_item_left_img {
            margin-right: 2.5rem;
        }
    }

    /* ≤991px */
    @media (max-width: 991px) {
        .pre_sale {
            padding: 3rem 0 2rem 0;
        }

        .pre_sale .pre_sale_title {
            font-size: 2.2rem;
            margin-bottom: 1.5rem;
        }

        .pre_sale .pre_sale_list {
            grid-template-columns: 1fr;
            gap: 1.2rem;
        }

        .pre_sale .pre_sale_item_title {
            font-size: 1.8rem;
            padding: 1.8rem;
        }

        .pre_sale .pre_sale_rxst {
            padding: 1.5rem;
        }

        .pre_sale .pre_sale_rxst_title {
            font-size: 1.5rem;
            line-height: 2rem;
            margin-bottom: 1rem;
        }

        .pre_sale .pre_sale_rxst li {
            font-size: 1.4rem;
            line-height: 1.9rem;
        }

        .pre_sale .pre_sale_rxst_hx {
            margin: 1.5rem 0;
        }

        .after_sales {
            padding: 3rem 0;
        }

        .after_sales .after_sales_title {
            font-size: 2.2rem;
            margin-bottom: 1.5rem;
        }

        .after_sales .after_sales_top_left_bom {
            grid-template-columns: 1fr;
            gap: 1.2rem;
        }

        .after_sales .after_sales_bom {
            grid-template-columns: 1fr;
            gap: 1.2rem;
            margin-top: 1.2rem;
        }

        .after_sales .after_sales_top_right {
            min-height: 16rem;
        }

        .after_sales_commom {
            padding: 1.8rem;
        }

        .after_sales .after_sales_titlecom {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }

        .after_sales .after_sales_desccom {
            font-size: 1.4rem;
            line-height: 1.9rem;
        }

        .download {
            padding: 3rem 0;
        }

        .download .download_title {
            font-size: 2.2rem;
            margin-bottom: 1.5rem;
        }

        .download .download_item {
            padding: 2rem;
        }

        .download .download_item_title {
            font-size: 1.5rem;
        }

        .download .download_item_rext {
            padding-left: 2rem;
        }

        .download .download_item_left_img {
            margin-right: 2rem;
            max-width: 3.5rem;
            max-height: 3.5rem;
        }

        .download .download_item_sx {
            height: 3rem;
        }
    }

    /* ≤767px */
    @media (max-width: 767px) {
        .pre_sale {
            padding: 2rem 0 1rem 0;
        }

        .pre_sale .pre_sale_title {
            font-size: 2rem;
            margin-bottom: 1.2rem;
        }

        .pre_sale .pre_sale_list {
            grid-template-columns: 1fr;
            gap: 1rem;
        }

        .pre_sale .pre_sale_item_title {
            font-size: 1.6rem;
            padding: 1.5rem;
        }

        .pre_sale .pre_sale_rxst {
            padding: 1.2rem;
        }

        .pre_sale .pre_sale_rxst_title {
            font-size: 1.4rem;
            line-height: 1.9rem;
            margin-bottom: 0.8rem;
        }

        .pre_sale .pre_sale_rxst li {
            font-size: 1.4rem;
            line-height: 1.8rem;
        }

        .pre_sale .pre_sale_rxst_hx {
            margin: 1.2rem 0;
        }

        .after_sales {
            padding: 2rem 0;
        }

        .after_sales .after_sales_title {
            font-size: 2rem;
            margin-bottom: 1.2rem;
        }

        .after_sales .after_sales_top {
            grid-template-columns: 1fr;
            gap: 1rem;
        }

        .after_sales .after_sales_top_left_bom {
            grid-template-columns: 1fr;
            gap: 1rem;
        }

        .after_sales .after_sales_bom {
            grid-template-columns: 1fr;
            gap: 1rem;
            margin-top: 1rem;
        }

        .after_sales .after_sales_top_right {
            min-height: 14rem;
        }

        .after_sales_commom {
            padding: 1.5rem;
        }

        .after_sales .after_sales_titlecom {
            font-size: 1.4rem;
            margin-bottom: 0.8rem;
        }

        .after_sales .after_sales_desccom {
            font-size: 1.4rem;
            line-height: 1.8rem;
        }

        .download {
            padding: 2rem 0;
        }

        .download .download_title {
            font-size: 2rem;
            margin-bottom: 1.2rem;
        }

        .download .download_item {
            
            gap: 1.2rem;
            padding: 1.5rem;
        }

        .download .download_item_left {
            width: 100%;
        }

        .download .download_item_rext {
            padding-left: 1.5rem;
        }

        .download .download_item_left_img {
            margin-right: 1.5rem;
            max-width: 3rem;
            max-height: 3rem;
        }

        .download .download_item_sx {
            height: 2.5rem;
        }

        .download .download_item_title {
            font-size: 1.4rem;
        }

        .download .download_item_timer {
            font-size: 1.4rem;
            margin-top: 0.5rem;
        }

        .download .download_item_right {
            align-self: flex-end;
            max-width: 2.8rem;
            max-height: 3rem;
        }

        .download .download_list {
            gap: 1rem;
        }
    }