/* ===================================
   移动端响应式适配样式
   断点: 768px
   =================================== */

@media screen and (max-width: 768px) {

    /* ---------- 全局重置 ---------- */
    body, html {
        font-size: 14px;
        overflow-x: hidden;
    }

    img {
        max-width: 100%;
        height: auto;
    }

    /* 去除所有 min-width 限制 */
    .nav_top .nav_cont,
    .cent_body,
    .cent_1200,
    footer .max1440,
    .kv_swiper,
    .brankv,
    .nav_top .nav_pro_cont div,
    .nav_top .nav_pro_cont div:first-child {
        min-width: 0 !important;
        max-width: 100% !important;
    }

    /* ---------- 顶部导航栏 ---------- */
    .nav_top {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 999;
        background: #fff;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }

    .nav_top .nav_cont {
        width: 100%;
        height: 56px;
        line-height: 56px;
        padding: 0 15px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        text-align: left;
    }

    .nav_top .nav_cont>* {
        display: inline-block;
    }

    .nav_top .logo {
        line-height: 56px !important;
        height: 56px !important;
        margin: 0 !important;
        flex-shrink: 0;
    }

    .nav_top .logo img {
        width: 80px;
        height: auto;
    }

    /* 隐藏默认导航链接 */
    .nav_top .nav_cont>a[data-values],
    .nav_top .pro,
    .nav_top .search {
        display: none !important;
    }

    /* 汉堡菜单按钮 */
    .nav-toggle {
        display: flex !important;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 36px;
        height: 36px;
        cursor: pointer;
        z-index: 1001;
        position: relative;
        border: none;
        background: transparent;
        padding: 0;
        margin: 0;
    }

    .nav-toggle span {
        display: block;
        width: 24px;
        height: 2px;
        background: #2c2c2c;
        margin: 3px 0;
        transition: all 0.3s ease;
        border-radius: 2px;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }

    /* 移动端下拉菜单 */
    .mobile-nav-menu {
        display: none;
        position: fixed;
        top: 56px;
        left: 0;
        width: 100%;
        background: #fff;
        z-index: 998;
        box-shadow: 0 4px 8px rgba(0,0,0,0.15);
        flex-direction: column;
        padding: 0;
    }

    .mobile-nav-menu.active {
        display: flex;
    }

    .mobile-nav-menu a {
        display: block;
        padding: 14px 20px;
        font-size: 16px;
        color: #2c2c2c;
        text-decoration: none;
        border-bottom: 1px solid #f0f0f0;
        font-weight: 700;
    }

    .mobile-nav-menu a:hover,
    .mobile-nav-menu a.active {
        color: #f08200;
        background: #fafafa;
    }

    /* 页面主体下移，避免被固定导航遮挡 */
    .bodycont {
        margin-top: 56px;
    }

    /* ---------- Banner/Swiper 区域 ---------- */
    .kv_swiper {
        height: 220px !important;
        min-width: 0 !important;
        width: 100% !important;
        overflow: hidden !important;
    }

    .kv_swiper .swiper-wrapper {
        height: 100% !important;
    }

    .kv_swiper .swiper-slide {
        height: 100% !important;
    }

    .kv_swiper .swiper-slide img {
        width: 100% !important;
        height: 100% !important;
        object-fit: cover !important;
        position: static !important;
        left: auto !important;
        top: auto !important;
        transform: none !important;
    }

    .brankv {
        height: 200px !important;
        min-width: 0 !important;
        width: 100% !important;
        overflow: hidden !important;
    }

    .brankv img {
        width: 100% !important;
        height: 100% !important;
        object-fit: cover !important;
        position: static !important;
        left: auto !important;
        top: auto !important;
        transform: none !important;
    }

    /* ---------- 首页 - 服务卡片区域 ---------- */
    .cent_body {
        min-width: 0 !important;
        max-width: 100% !important;
        padding: 20px 0;
    }

    .cent_1200 {
        width: 92% !important;
        margin: 0 auto;
    }

    .aboutChengXin {
        width: 92% !important;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .aboutChengXin .box {
        width: 48% !important;
        display: inline-block;
        padding: 25px 0 30px !important;
    }

    .aboutChengXin .box img {
        width: 30% !important;
    }

    .aboutChengXin .box .title {
        font-size: 16px !important;
        margin: 10px 0 3px !important;
    }

    .aboutChengXin .box .sub_title {
        font-size: 11px !important;
    }

    /* ---------- 首页 - 推荐车辆 ---------- */
    .tuijian ul li {
        font-size: 14px !important;
        margin: 0 10px 0 0 !important;
    }

    .tuijian_single {
        width: 48% !important;
        margin: 15px 0 0 0 !important;
    }

    .tuijian_single .title {
        font-size: 13px !important;
        line-height: 22px !important;
        margin-top: 5px !important;
    }

    .tuijian_single p {
        font-size: 11px !important;
        line-height: 18px !important;
        text-indent: 8px !important;
    }

    .tuijian_single .pirce {
        font-size: 16px !important;
        line-height: 22px !important;
    }

    .tuijian_single .renzheng {
        width: 40px !important;
    }

    .tuijianMore {
        margin-top: 20px !important;
        font-size: 13px !important;
    }

    .tuijianMore a {
        margin-right: 20px !important;
    }

    /* ---------- 首页 - 车型选择 ---------- */
    .typecar {
        padding: 30px 0 !important;
    }

    .typecar ul li {
        font-size: 13px !important;
        margin: 0 6px !important;
    }

    /* ---------- 首页 - 卖场 ---------- */
    .maichang {
        margin: 40px auto !important;
    }

    .maichang .cont {
        flex-wrap: wrap;
    }

    .maichang .mc_box {
        width: 48% !important;
        margin-bottom: 15px;
    }

    /* ---------- 首页 - 买车 ---------- */
    .buyCar .box {
        width: 100% !important;
        margin-bottom: 15px;
    }

    .buyCar .boxcent {
        margin: 0 !important;
    }

    /* ---------- 关于页面 ---------- */
    .cx-about .bodycont {
        overflow: visible !important;
    }

    .cx-about .kv_swiper {
        margin-bottom: 0 !important;
    }

    /* ---------- 关于页面 - Tab 标签 ---------- */
    .cx-about .tab {
        width: 92% !important;
        margin: 20px auto 30px !important;
        flex-wrap: wrap;
    }

    .cx-about .tab li {
        width: 32% !important;
        font-size: 13px !important;
        height: 44px !important;
        line-height: 44px !important;
        margin-bottom: 8px;
    }

    .cx-about .content {
        width: 92% !important;
    }

    .cx-about .content h2 {
        font-size: 18px !important;
        letter-spacing: 3px !important;
    }

    .cx-about .content h3 {
        font-size: 13px !important;
    }

    /* 认证内容 */
    .cx-about .content>ul {
        flex-wrap: wrap;
    }

    .cx-about .content>ul li {
        width: 100% !important;
        margin: 25px auto !important;
    }

    .cx-about .content>ul li h4 {
        font-size: 18px !important;
        margin: 10px auto 10px !important;
    }

    .cx-about .content>ul li p {
        font-size: 13px !important;
    }

    .cx-about .content>img {
        width: 100% !important;
        margin: 0 auto 40px !important;
    }

    /* 置换 */
    .cx-about .displace>ul li {
        width: 100% !important;
        margin: 25px auto 30px !important;
    }

    .cx-about .displace>ul li img {
        width: 25% !important;
    }

    /* 鉴定 */
    .cx-about .checked>ul li {
        width: 100% !important;
    }

    .cx-about .checked>ul li img {
        width: 25% !important;
    }

    /* Banner 遮罩层 */
    .cx-about .content .banner {
        margin: 25px auto 30px !important;
    }

    .cx-about .content .banner .mask {
        bottom: 0 !important;
        background: rgba(0,0,0,0.6) !important;
    }

    .cx-about .content .banner .mask .text {
        opacity: 1 !important;
        padding: 15px;
    }

    .cx-about .content .banner .mask h4 {
        font-size: 16px !important;
        margin-bottom: 15px !important;
    }

    .cx-about .content .banner .mask p {
        font-size: 12px !important;
        line-height: 20px !important;
    }

    .cx-about .content .banner .title {
        font-size: 15px !important;
    }

    /* 认证页 - feature */
    .cx-about .content .feature {
        display: flex;
        flex-wrap: wrap;
    }

    .cx-about .content .feature div {
        width: 100% !important;
        float: none !important;
        margin: 0 0 15px 0 !important;
    }

    /* ---------- 卖车页面 ---------- */
    .sale_nav li {
        width: 49% !important;
        font-size: 16px !important;
        line-height: 50px !important;
        margin: 10px 0 !important;
    }

    .sale_nav .margins {
        margin: 10px 0 !important;
    }

    .selectmy {
        font-size: 18px !important;
        letter-spacing: 8px !important;
        margin: 25px 0 30px !important;
    }

    .tese {
        width: 92% !important;
        margin: 0 auto 30px !important;
    }

    /* 流程 */
    .liucheng {
        padding: 20px 0 40px !important;
        margin-bottom: 40px !important;
    }

    .liucheng p {
        font-size: 18px !important;
    }

    .liucheng .liuchengtu {
        width: 92% !important;
        margin: 20px auto 0 !important;
    }

    /* 表单 */
    .sale_table {
        width: 100% !important;
    }

    .sale_table tr {
        height: auto !important;
    }

    .sale_table tr td {
        display: block;
        width: 100%;
        text-align: left;
        padding: 5px 15px;
        font-size: 14px !important;
    }

    .sale_table input,
    .sale_table .myselect {
        width: 100% !important;
        margin-left: 0 !important;
    }

    .submit-content {
        width: 100% !important;
        padding: 0 15px;
        box-sizing: border-box;
    }

    .submit-content li {
        width: 100% !important;
        margin-bottom: 20px !important;
    }

    .submit-content li label {
        width: 80px !important;
        font-size: 14px !important;
    }

    .submit-content li input,
    .submit-content li select {
        width: calc(100% - 90px) !important;
        font-size: 14px !important;
    }

    .onxinxiCont .cale_sub {
        margin: 20px auto 40px !important;
        width: 120px !important;
        height: 40px !important;
        line-height: 40px !important;
        font-size: 14px !important;
    }

    .tishi {
        width: 24px !important;
        bottom: -80px !important;
        margin-left: -12px !important;
    }

    /* ---------- 页脚 ---------- */
    footer {
        padding: 25px 0 15px !important;
    }

    footer .max1440 {
        min-width: 0 !important;
    }

    footer .max1440 .cent1200 {
        width: 92% !important;
        flex-wrap: wrap;
    }

    .cent1200 .footer_box {
        width: 48% !important;
        margin-bottom: 20px;
    }

    .cent1200 .footer_box_18,
    .cent1200 .footer_box_24 {
        width: 48% !important;
    }

    .cent1200 .footer_box .title {
        font-size: 13px !important;
        margin: 5px 0 10px !important;
    }

    .cent1200 .footer_box .title img {
        width: 11px !important;
        left: -16px !important;
        top: 9px !important;
    }

    .cent1200 .footer_box .img {
        width: 60px !important;
        margin-right: 10px !important;
    }

    .cent1200 .footer_box .footer_right p {
        font-size: 10px !important;
        margin-top: 3px !important;
    }

    .cent1200 .footer_box .about a {
        font-size: 10px !important;
        margin-right: 8% !important;
    }

    .cent1200 .footer_box p {
        font-size: 10px !important;
    }

    footer .beian {
        margin-top: 20px !important;
        padding-top: 12px !important;
    }

    footer .beian .text {
        font-size: 10px !important;
        line-height: 16px !important;
        padding: 0 10px;
        box-sizing: border-box;
    }

    footer .beian .text .pad_right {
        padding-right: 8px !important;
    }

    footer .beian .text .pad_left {
        padding-left: 8px !important;
    }

    /* ---------- 侧边栏 ---------- */
    .rightnav_cont {
        width: 36px !important;
        right: 5px !important;
        top: 70% !important;
    }

    /* ---------- 弹窗适配 ---------- */
    .qualityQuery .cont .main,
    .testdrve_tanchuang .cont .main {
        width: 92% !important;
        padding: 20px 15px !important;
    }

    .qualityQuery .cont .main p {
        width: 100% !important;
        font-size: 16px !important;
    }

    .qualityQuery .cont .main input {
        width: 100% !important;
    }

    .testdrve_tanchuang .main .carpic {
        width: 100% !important;
    }

    .testdrve_tanchuang .main .think select {
        width: 100% !important;
    }

    .testdrve_tanchuang .main .userxixi div {
        width: 100% !important;
        float: none !important;
    }

    .testdrve_tanchuang .main input {
        width: 100% !important;
    }

    .testdrve_tanchuang .btn {
        width: 100% !important;
    }

    .qualityQuery .btn {
        width: 100% !important;
    }

    .qualityassurance-content {
        width: 92% !important;
        height: auto !important;
        max-height: 80vh;
        overflow-y: auto;
        padding: 20px 15px;
    }

    .qualityassurance-content img {
        width: 100% !important;
        margin: 15px auto !important;
    }

    .qualityassurance-content h3 {
        font-size: 16px !important;
        width: 100% !important;
    }

    .qualityassurance-content ul {
        width: 100% !important;
    }

    .qualityassurance-content ul li {
        width: 100% !important;
        font-size: 13px !important;
    }

    .qualityassurance .close {
        transform: translate(calc(46vw - 25px), -40vh) !important;
        top: 50% !important;
        left: 50% !important;
    }

    /* ---------- 活动区域 ---------- */
    .activity {
        padding: 30px 0 !important;
        margin-top: 40px !important;
    }

    .activity-content {
        width: 92% !important;
    }

    .activity-content>.activity-img {
        width: 100% !important;
        margin-bottom: 15px;
    }

    .activity-content .activity-imgs {
        width: 48% !important;
    }

    .activity-content .activity-list {
        width: 48% !important;
    }

    .activity-content .activity-list li {
        font-size: 13px !important;
        height: 32px !important;
        line-height: 32px !important;
    }

    .activity-content .activity-img p {
        font-size: 14px !important;
        height: 35px !important;
        line-height: 35px !important;
    }

    .activity-all {
        font-size: 13px !important;
        right: 2% !important;
    }

    /* ---------- 通用按钮 ---------- */
    .btn {
        width: 100% !important;
        max-width: 280px;
        font-size: 15px !important;
    }

    .line_btn {
        font-size: 13px !important;
        height: 34px !important;
        line-height: 32px !important;
    }

    /* ---------- 分页 ---------- */
    .pages_num {
        width: 22px !important;
        height: 22px !important;
        font-size: 12px !important;
        line-height: 22px !important;
    }

    .before_page,
    .next_page {
        width: 20px !important;
        height: 20px !important;
    }

    /* ---------- 横屏提示 ---------- */
    .orientLayer {
        background-size: 50% !important;
    }

    /* ---------- 小屏手机优化 (< 375px) ---------- */
    @media screen and (max-width: 375px) {
        .aboutChengXin .box {
            width: 100% !important;
            padding: 20px 0 !important;
        }

        .aboutChengXin .box img {
            width: 25% !important;
        }

        .tuijian_single {
            width: 100% !important;
        }

        .maichang .mc_box {
            width: 100% !important;
        }

        .cent1200 .footer_box {
            width: 100% !important;
        }

        .kv_swiper {
            height: 180px !important;
        }

        .nav_top .logo img {
            width: 65px;
        }
    }
}

/* PC端隐藏汉堡菜单 */
.nav-toggle {
    display: none;
}

.mobile-nav-menu {
    display: none;
}