/* ============================================
   登士柏节能科技官网 - 响应式布局样式表
   深度优化版本 - 支持PC/平板/手机全端适配
   修复版本 - 手机端布局优化
   ============================================ */

/* ============================================
   响应式断点定义
   PC端：> 1200px (默认样式)
   平板端：768px - 1200px  
   手机端：< 768px
   小屏手机：< 480px
   ============================================ */

/* ============================================
   平板端响应式 (768px - 1200px)
   ============================================ */
@media (max-width: 1200px) {
    /* 容器调整 */
    .container {
        max-width: 960px;
        padding: 0 15px;
    }
    
    /* 头部导航 */
    .header .container {
        height: 70px;
    }
    
    .logo img {
        height: 40px;
    }
    
    .logo-text .company {
        font-size: 16px;
    }
    
    .nav {
        gap: 20px;
        margin: 0 15px;
    }
    
    .nav-item {
        font-size: 14px;
        padding: 8px 2px;
    }
    
    .header-phone {
        font-size: 14px;
        padding: 6px 12px;
    }
    
    .nav-item.highlight a {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    /* Banner Hero */
    .banner.hero {
        min-height: auto;
        padding: 120px 0 80px;
        margin-top: 70px;
    }
    
    .hero-content h1 {
        font-size: 38px;
    }
    
    .hero-content .subtitle {
        font-size: 18px;
    }
    
    .garage-scene {
        width: 45%;
    }
    
    /* 核心业务 */
    .business-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .business-card {
        padding: 30px 20px;
    }
    
    .business-icon {
        width: 70px;
        height: 70px;
    }
    
    /* 数据统计 */
    .data-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    
    .data-number {
        font-size: 40px;
    }
    
    /* 技术优势 */
    .tech-grid {
        gap: 20px;
    }
    
    .tech-card {
        padding: 30px;
        gap: 20px;
    }
    
    .tech-icon {
        width: 70px;
        height: 70px;
    }
    
    /* 解决方案 */
    .solutions-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }
    
    .solution-item {
        height: 240px;
    }
    
    /* 案例卡片 */
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .case-image {
        height: 180px;
    }
    
    /* 咨询表单 */
    .consultation-wrapper {
        grid-template-columns: 1fr 350px;
        gap: 40px;
    }
    
    .consultation-form {
        padding: 40px;
    }
    
    /* 服务流程 */
    .service-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 产品中心 */
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    
    .product-card {
        padding: 20px;
    }
    
    /* 关于我们 - 发展历程 */
    .timeline {
        padding: 0 20px;
    }
    
    /* 页脚 */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    /* ==========================================
       联系我们页面 - 平板端
       ========================================== */
    .contact-wrapper {
        gap: 30px;
    }
    
    .contact-form {
        padding: 30px;
    }
    
    .contact-info {
        padding: 30px;
    }
}

/* ============================================
   手机端响应式 (< 768px)
   ============================================ */
@media (max-width: 768px) {
    /* 容器调整 */
    .container {
        max-width: 100%;
        padding: 0 12px;
    }
    
    /* 通用section padding缩小 */
    .section {
        padding: 50px 0;
    }
    
    .section-header {
        margin-bottom: 30px;
    }
    
    .section-header h2 {
        font-size: 26px;
    }
    
    .section-header p {
        font-size: 14px;
    }
    
    /* ==========================================
       头部导航 - 手机端
       ========================================== */
    .header .container {
        height: 60px;
    }
    
    .nav {
        display: none !important;
    }
    
    .header-phone {
        display: none;
    }
    
    .logo img,
    .logo-img {
        height: 32px;
    }
    
    .logo-text .company {
        font-size: 14px;
    }
    
    .logo-text .slogan {
        font-size: 10px;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    /* 移动端导航菜单 */
    .mobile-nav {
        display: block;
    }
    
    .mobile-nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-nav-menu {
        width: 280px;
    }
    
    .mobile-nav-menu li a {
        padding: 14px 20px;
        font-size: 15px;
    }
    
    /* ==========================================
       Hero Banner - 手机端
       ========================================== */
    .banner.hero {
        min-height: auto;
        padding: 80px 0 50px;
        margin-top: 60px;
    }
    
    .hero-content {
        text-align: center;
        max-width: 100%;
    }
    
    .hero-content h1 {
        font-size: 28px;
        line-height: 1.3;
        margin-bottom: 15px;
    }
    
    .hero-content h1 .highlight {
        font-size: 28px;
    }
    
    .hero-content .subtitle {
        font-size: 15px;
        margin-bottom: 25px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 260px;
        padding: 12px 24px;
        font-size: 15px;
    }
    
    /* 车库场景缩小 */
    .garage-scene {
        display: none;
    }
    
    /* ==========================================
       核心业务卡片 - 手机端
       ========================================== */
    .business-cards {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .business-card {
        padding: 25px 18px;
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .business-icon {
        width: 60px;
        height: 60px;
    }
    
    .business-card h3 {
        font-size: 17px;
    }
    
    .business-card p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    /* ==========================================
       产品中心 - 手机端
       ========================================== */
    .products-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .product-card {
        padding: 20px 15px;
        display: flex;
        flex-direction: column;
    }
    
    .product-image {
        height: 160px;
        width: 100%;
    }
    
    .product-info h3 {
        font-size: 16px;
    }
    
    .product-info p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    .product-tags {
        flex-wrap: wrap;
    }
    
    .product-tag {
        font-size: 11px;
        padding: 3px 8px;
    }
    
    /* ==========================================
       解决方案 - 手机端
       ========================================== */
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .solution-item {
        height: auto;
        min-height: 200px;
        padding: 25px 18px;
    }
    
    .solution-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 15px;
    }
    
    .solution-content h3 {
        font-size: 17px;
    }
    
    .solution-content p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    /* ==========================================
       案例展示 - 手机端（单列）
       ========================================== */
    .cases-grid {
        grid-template-columns: 1fr !important;
        gap: 20px;
    }
    
    .case-card {
        width: 100% !important;
        margin: 0 !important;
        display: flex;
        flex-direction: column;
    }
    
    .case-image {
        height: 180px;
        width: 100%;
        object-fit: cover;
    }
    
    .case-content {
        padding: 18px;
        flex: 1;
    }
    
    .case-content h3 {
        font-size: 16px;
        white-space: normal;
    }
    
    .case-tag {
        font-size: 11px;
        padding: 3px 10px;
    }
    
    .case-stats {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .case-stat span {
        font-size: 12px;
    }
    
    /* ==========================================
       技术优势 - 手机端
       ========================================== */
    .tech-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .tech-card {
        padding: 25px 18px;
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .tech-icon {
        width: 60px;
        height: 60px;
    }
    
    .tech-card h3 {
        font-size: 17px;
    }
    
    .tech-card p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    /* ==========================================
       数据统计 - 手机端
       ========================================== */
    .data-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .data-item {
        padding: 20px 10px;
    }
    
    .data-number {
        font-size: 32px;
    }
    
    .data-label {
        font-size: 13px;
    }
    
    .data-unit {
        font-size: 14px;
    }
    
    /* ==========================================
       服务流程 - 手机端
       ========================================== */
    .service-steps {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .service-step {
        padding: 25px 18px;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 20px;
        margin-bottom: 15px;
    }
    
    .service-step h3 {
        font-size: 17px;
    }
    
    .service-step p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    /* ==========================================
       发展历程时间线 - 手机端
       ========================================== */
    .timeline {
        padding: 0 10px;
    }
    
    .timeline-item {
        padding-left: 30px;
        margin-bottom: 25px;
    }
    
    .timeline-year {
        font-size: 18px;
        left: 0;
    }
    
    .timeline-title {
        font-size: 15px;
    }
    
    .timeline-desc {
        font-size: 14px;
        line-height: 1.6;
    }
    
    /* ==========================================
       咨询表单 - 手机端
       ========================================== */
    .consultation-wrapper {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
    }
    
    .consultation-form {
        padding: 20px 15px !important;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-group label {
        font-size: 14px;
        margin-bottom: 6px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px 12px;
        font-size: 14px;
        width: 100%;
    }
    
    .consultation-info {
        padding: 15px !important;
        text-align: center !important;
    }
    
    .contact-item {
        padding: 10px 4px !important;
    }
    
    .contact-icon {
        width: 30px !important;
        height: 30px !important;
    }
    
    .contact-item h4 {
        font-size: 11px !important;
    }
    
    .contact-item p {
        font-size: 12px !important;
        line-height: 1.4 !important;
    }
    
    /* ==========================================
       联系我们页面 - 手机端（核心修复）
       ========================================== */
    .contact-wrapper {
        display: flex;
        flex-direction: column !important;
        gap: 25px;
    }
    
    .contact-form,
    .contact-info {
        width: 100% !important;
        display: block !important;
    }
    
    .contact-form {
        padding: 25px 18px;
    }
    
    .contact-form h2 {
        font-size: 22px;
        margin-bottom: 20px;
    }
    
    .contact-form .form-row {
        flex-direction: column;
    }
    
    .contact-form input,
    .contact-form select,
    .contact-form textarea {
        width: 100% !important;
        padding: 12px;
        font-size: 14px;
    }
    
    .contact-form .btn {
        width: 100%;
        padding: 14px 24px;
        font-size: 15px;
    }
    
    .contact-info {
        padding: 25px 18px;
        background: #f8f9fa;
    }
    
    .contact-info h2 {
        font-size: 22px;
        margin-bottom: 20px;
    }
    
    .contact-info-list {
        display: flex;
        flex-direction: column;
        gap: 20px;
    }
    
    .contact-info-item {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .contact-info-icon {
        width: 45px;
        height: 45px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .contact-info-text h4 {
        font-size: 15px;
    }
    
    .contact-info-text p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    .contact-map {
        height: 200px;
        margin-top: 20px;
    }
    
    /* ==========================================
       品牌展示 - 手机端
       ========================================== */
    .brands-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    
    .brand-item {
        padding: 15px;
    }
    
    .brand-item img {
        max-height: 35px;
    }
    
    /* ==========================================
       页脚 - 手机端
       ========================================== */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 25px;
        text-align: center;
    }
    
    .footer-grid {
        padding: 25px 15px;
    }
    
    .footer-info p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    .footer-links h4 {
        font-size: 16px;
        margin-bottom: 12px;
    }
    
    .footer-links ul li a {
        font-size: 14px;
        padding: 6px 0;
    }
    
    .footer-bottom {
        padding: 20px 15px;
        font-size: 13px;
        flex-direction: column;
        gap: 10px;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    /* ==========================================
       浮动咨询按钮 - 手机端隐藏
       ========================================== */
    .float-consult,
    .float-btn {
        display: none !important;
    }
    
    /* ==========================================
       通用按钮和字体优化
       ========================================== */
    .btn {
        padding: 12px 20px;
        font-size: 14px;
    }
    
    .btn-lg {
        padding: 14px 24px;
        font-size: 15px;
    }
    
    /* 通用标题字号 */
    h1 {
        font-size: 24px !important;
    }
    
    h2 {
        font-size: 20px !important;
    }
    
    h3 {
        font-size: 18px !important;
    }
    
    h4 {
        font-size: 16px !important;
    }
    
    p {
        font-size: 14px !important;
        line-height: 1.7 !important;
    }
    
    .cta-section {
        padding: 50px 0;
    }
    
    .cta-content h2 {
        font-size: 24px;
    }
    
    .cta-content p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    /* ==========================================
       解决方案详情 - 手机端（左右图文变上下）
       ========================================== */
    .solution-detail {
        grid-template-columns: 1fr !important;
        display: flex !important;
        flex-direction: column !important;
        gap: 25px;
        margin-bottom: 40px;
    }
    
    .solution-detail.reverse {
        direction: ltr;
    }
    
    .solution-visual {
        height: 200px;
        width: 100%;
    }
    
    .solution-visual svg,
    .solution-visual img {
        width: 80px;
        height: 80px;
    }
    
    .solution-detail-content h3 {
        font-size: 20px;
        margin-bottom: 12px;
    }
    
    .solution-detail-content p {
        font-size: 14px;
        line-height: 1.7;
        margin-bottom: 15px;
    }
    
    .problem-list h4,
    .feature-list h4 {
        font-size: 14px;
        margin-bottom: 8px;
    }
    
    /* 场景卡片 - 手机端 */
    .scene-card {
        width: 100% !important;
        margin: 0 !important;
        padding: 20px 15px !important;
    }
    
    /* 内联flex数据块 - 手机端 */
    .solution-detail div[style*="display: flex"] {
        flex-wrap: wrap;
        gap: 15px !important;
    }
    
    .solution-detail div[style*="font-size: 32px"] {
        font-size: 24px !important;
    }
    
    .solution-detail div[style*="font-size: 14px"][style*="color"] {
        font-size: 13px !important;
    }
    
    /* ==========================================
       案例卡片数据截断修复 - 手机端
       ========================================== */
    .case-card {
        overflow: hidden;
    }
    
    .case-content h3 {
        white-space: normal;
        overflow: visible;
    }
    
    .case-content p {
        font-size: 14px;
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    
    .case-stats {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .case-stat .number {
        font-size: 18px;
    }
    
    .case-stat .label {
        font-size: 12px;
    }
    
    /* ==========================================
       关于我们页面 - 手机端优化
       ========================================== */
    .about-hero {
        padding: 50px 0 30px;
    }
    
    .about-hero h1 {
        font-size: 24px;
    }
    
    .about-intro {
        font-size: 14px;
        line-height: 1.7;
    }
    
    .about-values {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .value-card {
        padding: 20px 15px;
    }
    
    /* ==========================================
       产品中心 - 手机端优化
       ========================================== */
    .product-filters {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .product-filter-btn {
        padding: 6px 14px;
        font-size: 13px;
    }
    
    .product-card .product-image {
        height: 140px;
    }
    
    .product-info h3 {
        font-size: 15px;
        white-space: normal;
    }
    
    .product-info p {
        font-size: 14px;
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    
    /* ==========================================
       图片自适应优化
       ========================================== */
    img {
        max-width: 100%;
        height: auto;
    }
    
    /* ==========================================
       列表样式优化
       ========================================== */
    ul, ol {
        padding-left: 20px;
    }
    
    li {
        font-size: 14px;
        line-height: 1.7;
    }
    
    /* ==========================================
       表格响应式
       ========================================== */
    table {
        font-size: 13px;
    }
    
    th, td {
        padding: 10px 8px;
    }
    /* 联系区域container撑满宽度 */
    .consultation-section .container {
        max-width: 100% !important;
        padding: 0 10px !important;
    }
    
    /* 联系我们区域 - 手机端美化 */
    .consultation-section {
        padding: 25px 0 !important;
    }
    .consultation-wrapper {
        gap: 20px !important;
    }
    .consultation-form {
        padding: 20px 15px !important;
        border-radius: 12px !important;
        box-shadow: 0 4px 15px rgba(0,0,0,0.08) !important;
    }
    .consultation-form h3 {
        font-size: 17px !important;
        margin-bottom: 6px !important;
        text-align: center !important;
    }
    .consultation-form > p {
        font-size: 12px !important;
        margin-bottom: 15px !important;
        text-align: center !important;
        opacity: 0.7 !important;
    }
    .form-group {
        margin-bottom: 10px !important;
    }
    .form-group label {
        font-size: 13px !important;
        margin-bottom: 4px !important;
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px 12px !important;
        font-size: 14px !important;
        border-radius: 6px !important;
    }
    .consultation-info {
        padding: 20px !important;
        text-align: center !important;
    }
    .consultation-info h3 {
        font-size: 22px !important;
        margin-bottom: 8px !important;
    }
    .consultation-info > p {
        font-size: 13px !important;
        margin-bottom: 18px !important;
        line-height: 1.5 !important;
    }
    /* 联系方式：3横排+地址长条 */
    .contact-list {
        display: grid !important;
        grid-template-columns: 1fr 1fr 1fr !important;
        gap: 6px !important;
    }
    .contact-item {
        padding: 10px 4px !important;
        gap: 4px !important;
        flex-direction: column !important;
        align-items: center !important;
        text-align: center !important;
        background: rgba(255,255,255,0.1) !important;
        border-radius: 8px !important;
    }
    .contact-icon {
        width: 30px !important;
        height: 30px !important;
        border-radius: 50% !important;
    }
    .contact-icon svg {
        width: 16px !important;
        height: 16px !important;
    }
    .contact-item .label {
        font-size: 10px !important;
        margin-bottom: 1px !important;
    }
    .contact-item .value {
        font-size: 11px !important;
        word-break: break-all !important;
    }
    /* 第4个：地址横跨全行，横向排列 */
    .contact-item:nth-child(4) {
        grid-column: 1 / -1 !important;
        flex-direction: row !important;
        justify-content: center !important;
        gap: 8px !important;
        padding: 8px 12px !important;
    }
    .contact-item:nth-child(4) .contact-icon {
        width: 26px !important;
        height: 26px !important;
    }
    .contact-item:nth-child(4) .label {
        display: none !important;
    }
    .contact-item:nth-child(4) .value {
        font-size: 12px !important;
    }
    .contact-item {
        padding: 12px 6px !important;
        gap: 6px !important;
        flex-direction: column !important;
        align-items: center !important;
        text-align: center !important;
        background: rgba(255,255,255,0.1) !important;
        border-radius: 10px !important;
    }
    .contact-icon {
        width: 36px !important;
        height: 36px !important;
        border-radius: 50% !important;
        background: rgba(255,255,255,0.15) !important;
    }
    .contact-icon svg {
        width: 18px !important;
        height: 18px !important;
    }
    .contact-item .label {
        font-size: 11px !important;
        opacity: 0.75 !important;
        margin-bottom: 2px !important;
    }
    .contact-item .value {
        font-size: 13px !important;
        font-weight: 600 !important;
        word-break: break-all !important;
    }


    /* 头部 */
    .header .container {
        height: 55px;
    }
    
    .logo img,
    .logo-img {
        height: 28px;
    }
    
    .logo-text .company {
        font-size: 13px;
    }
    
    .mobile-menu-btn {
        width: 36px;
        height: 36px;
    }
    
    /* Hero */
    .banner.hero {
        padding: 60px 0 40px;
    }
    
    .hero-content h1 {
        font-size: 22px;
    }
    
    .hero-content h1 .highlight {
        font-size: 22px;
    }
    
    .hero-content .subtitle {
        font-size: 14px;
    }
    
    .hero-buttons .btn {
        padding: 11px 20px;
        font-size: 14px;
    }
    
    /* 卡片 */
    .business-card,
    .product-card,
    .solution-item,
    .case-card,
    .tech-card {
        padding: 18px 12px;
    }
    
    .business-icon,
    .tech-icon {
        width: 50px;
        height: 50px;
    }
    
    /* 数据 */
    .data-grid {
        gap: 10px;
    }
    
    .data-item {
        padding: 15px 8px;
    }
    
    .data-number {
        font-size: 26px;
    }
    
    .data-label {
        font-size: 12px;
    }
    
    /* 时间线 */
    .timeline-item {
        padding-left: 25px;
        margin-bottom: 20px;
    }
    
    .timeline-year {
        font-size: 16px;
    }
    
    /* 品牌 */
    .brands-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    /* 页脚 - 手机端2列布局 */
    .footer {
        padding-top: 40px;
    }
    
    .footer-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px 12px;
        padding: 0 12px 30px;
        margin-bottom: 0;
    }
    
    .footer-brand {
        grid-column: 1 / -1;
        text-align: center;
        padding-bottom: 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .footer-brand .logo {
        justify-content: center;
        margin-bottom: 12px;
    }
    
    .footer-brand .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 16px;
    }
    
    .footer-brand .logo span {
        font-size: 11px;
    }
    
    .footer-brand p {
        font-size: 11px;
        line-height: 1.6;
        margin-bottom: 8px;
    }
    
    .footer-col {
        text-align: left;
    }
    
    .footer-col h4 {
        font-size: 13px;
        margin-bottom: 10px;
        color: #fff;
    }
    
    .footer-col a {
        font-size: 11px;
        padding: 2px 0;
        color: rgba(255, 255, 255, 0.7);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
        padding: 15px 12px;
        font-size: 11px;
    }
    
    .brand-strip {
        font-size: 10px;
    }
    
    /* 联系我们 - 小屏 */
    .contact-form,
    .contact-info {
        padding: 20px 15px;
    }
    
    .contact-form h2,
    .contact-info h2 {
        font-size: 20px;
    }
    
    /* 标题优化 */
    h1 {
        font-size: 20px !important;
    }
    
    h2 {
        font-size: 18px !important;
    }
    
    h3 {
        font-size: 16px !important;
    }
    
    p, li {
        font-size: 13px !important;
    }
    
    /* 案例卡片 - 小屏 */
    .case-image {
        height: 160px;
    }
    
    .case-content {
        padding: 15px;
    }
    
    .case-content h3 {
        font-size: 15px;
    }

    /* 服务优势 - 手机端2列布局 */
    .service-steps {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
        padding: 0 8px;
    }
    
    .service-step {
        padding: 15px 10px;
        text-align: center;
        border: 1px solid var(--primary-light);
        border-radius: 8px;
        background: #fff;
    }
    
    .service-step::after {
        display: none;
    }
    
    .step-number {
        width: 30px;
        height: 30px;
        line-height: 30px;
        font-size: 14px;
        margin: 0 auto 8px;
    }
    
    .service-step h4 {
        font-size: 13px;
        margin-bottom: 4px;
        line-height: 1.3;
    }
    
    .service-step p {
        font-size: 10px;
        line-height: 1.4;
        color: var(--gray);
        margin: 0;
        display: none;
    }

}




/* ============================================
   手机端页面压缩布局 - 新增样式
   目标：2列grid、隐藏次要描述、缩小padding
   添加时间: 2026-05-15
   ============================================ */

/* ============================================
   手机端响应式 (< 768px) - 压缩布局增强
   ============================================ */
@media (max-width: 768px) {
    
    /* 首页压缩 - 产品展示区改为2列 */
    .business-cards {
        grid-template-columns: 1fr 1fr !important;
        gap: 10px !important;
    }
    
    .business-card {
        padding: 12px 8px !important;
        text-align: center;
    }
    
    .business-icon {
        width: 45px !important;
        height: 45px !important;
        margin: 0 auto 8px !important;
    }
    
    .business-card h3 {
        font-size: 13px !important;
        margin-bottom: 4px !important;
    }
    
    .business-card p {
        display: none !important;
    }
    
    /* 技术优势 - 2列 */
    .tech-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 10px !important;
    }
    
    .tech-card {
        padding: 12px 8px !important;
        text-align: center;
    }
    
    .tech-icon {
        width: 40px !important;
        height: 40px !important;
        margin: 0 auto 8px !important;
    }
    
    .tech-card h3 {
        font-size: 13px !important;
        margin-bottom: 4px !important;
    }
    
    .tech-card p {
        display: none !important;
    }
    
    /* 数据统计 - 2列 */
    .data-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 10px !important;
    }
    
    .data-item {
        padding: 15px 8px !important;
        text-align: center;
    }
    
    .data-number {
        font-size: 24px !important;
    }
    
    .data-label {
        font-size: 11px !important;
    }
    
    /* 品牌展示 - 3列 */
    .brands-grid {
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 8px !important;
    }
    
    .brand-item {
        padding: 10px 5px !important;
    }
    
    /* 产品中心压缩 - 12个产品改为2列 */
    .products-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 10px !important;
    }
    
    .product-card {
        padding: 10px 8px !important;
    }
    
    .product-image {
        height: 80px !important;
    }
    
    .product-info h3 {
        font-size: 12px !important;
        margin-bottom: 4px !important;
        line-height: 1.3 !important;
    }
    
    .product-info p {
        display: none !important;
    }
    
    .product-tags {
        display: none !important;
    }
    
    /* 解决方案压缩 - 改为2列 */
    .solutions-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 10px !important;
    }
    
    .solution-item {
        padding: 12px 8px !important;
        min-height: auto !important;
        text-align: center;
    }
    
    .solution-icon {
        width: 40px !important;
        height: 40px !important;
        margin: 0 auto 8px !important;
    }
    
    .solution-content h3 {
        font-size: 13px !important;
        margin-bottom: 4px !important;
    }
    
    .solution-content p {
        display: none !important;
    }
    
    /* 场景卡片详情 - 压缩 */
    .scene-card {
        padding: 15px 10px !important;
    }
    
    .scene-card h3 {
        font-size: 14px !important;
    }
    
    .scene-card p, .scene-card .desc {
        font-size: 12px !important;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    
    /* 案例展示压缩 - 9个案例改为2列 */
    .cases-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 10px !important;
    }
    
    .case-card {
        padding: 0 !important;
    }
    
    .case-image {
        height: 90px !important;
    }
    
    .case-content {
        padding: 10px 8px !important;
    }
    
    .case-content h3 {
        font-size: 12px !important;
        margin-bottom: 4px !important;
        line-height: 1.3 !important;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    
    .case-content > p:first-of-type {
        display: none !important;
    }
    
    .case-tag, .case-stats {
        display: none !important;
    }
    
    /* 关于我们压缩 */
    .about-intro {
        font-size: 13px !important;
        line-height: 1.6 !important;
        padding: 0 !important;
    }
    
    .about-values {
        grid-template-columns: 1fr 1fr !important;
        gap: 10px !important;
    }
    
    .value-card {
        padding: 12px 8px !important;
        text-align: center;
    }
    
    .value-card h3 {
        font-size: 13px !important;
    }
    
    .value-card p {
        display: none !important;
    }
    
    /* 发展历程时间线压缩 */
    .timeline-item {
        padding-left: 20px !important;
        margin-bottom: 15px !important;
    }
    
    .timeline-year {
        font-size: 14px !important;
    }
    
    .timeline-content h4 {
        font-size: 13px !important;
    }
    
    .timeline-content p {
        font-size: 12px !important;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    
    /* 联系我们压缩 */
    .contact-info-list {
        gap: 12px !important;
    }
    
    .contact-info-item {
        padding: 12px 8px !important;
    }
    
    .contact-info-icon {
        width: 35px !important;
        height: 35px !important;
    }
    
    .contact-info-text h4 {
        font-size: 13px !important;
    }
    
    .contact-info-text p {
        font-size: 12px !important;
    }
    
    .contact-map {
        height: 180px !important;
    }
    
    /* 通用压缩规则 */
    .section {
        padding: 40px 0 !important;
    }
    
    .section-header {
        margin-bottom: 20px !important;
    }
    
    .section-header h2 {
        font-size: 22px !important;
    }
    
    .section-header p {
        font-size: 12px !important;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    
    .section img, .banner img, .solution-visual img, .about-hero img {
        max-height: 120px !important;
        object-fit: cover;
    }
    
    .cta-section {
        padding: 40px 0 !important;
    }
    
    .cta-content h2 {
        font-size: 20px !important;
    }
    
    .cta-content p {
        font-size: 13px !important;
    }
    
    /* 解决方案详情页压缩 */
    .solution-detail-content h3 {
        font-size: 16px !important;
    }
    
    .problem-list h4, .feature-list h4 {
        font-size: 13px !important;
    }
    
    .problem-list li, .feature-list li {
        font-size: 12px !important;
        line-height: 1.5 !important;
    }
    
    .solution-detail div[style*="font-size: 32px"] {
        font-size: 20px !important;
    }
    
    .solution-detail div[style*="font-size: 14px"] {
        font-size: 12px !important;
    }
    
}

/* ============================================
   小屏手机 (< 480px) - 进一步压缩
   ============================================ */
@media (max-width: 480px) {
    
    .products-grid { gap: 8px !important; }
    .product-card { padding: 8px 5px !important; }
    .product-image { height: 70px !important; }
    .product-info h3 { font-size: 11px !important; }
    
    .cases-grid { gap: 8px !important; }
    .case-image { height: 75px !important; }
    
    .solutions-grid { gap: 8px !important; }
    .solution-item { padding: 10px 5px !important; }
    
    .business-cards { gap: 8px !important; }
    .business-card { padding: 10px 5px !important; }
    
    .tech-grid { gap: 8px !important; }
    .tech-card { padding: 10px 5px !important; }
    
    .data-grid { gap: 8px !important; }
    .data-item { padding: 12px 5px !important; }
    
    .section { padding: 30px 0 !important; }
    .section-header h2 { font-size: 20px !important; }
    
    .about-values { gap: 8px !important; }
    .value-card { padding: 10px 5px !important; }
    .value-card h3 { font-size: 12px !important; }
    
    .timeline-item { margin-bottom: 12px !important; }
    
    .brands-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
    }
    
    .cta-section { padding: 30px 0 !important; }
    .cta-content h2 { font-size: 18px !important; }
    .cta-content p { font-size: 12px !important; }
    

    /* 咨询表单 - 超小屏压缩 */
    .consultation-section {
        padding: 30px 0 !important;
    }
    
    .consultation-section .section-header h2 {
        font-size: 18px !important;
    }
    
    .consultation-section .section-header p {
        font-size: 12px !important;
    }
    
    .consultation-wrapper {
        gap: 15px !important;
    }
    
    .consultation-form {
        padding: 15px 12px !important;
    }
    
    .consultation-info {
        padding: 15px 12px !important;
        display: grid !important;
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 12px !important;
    }
    
    .contact-item {
        padding: 8px 0 !important;
        flex-direction: column !important;
        align-items: center !important;
        text-align: center !important;
    }
    
    .contact-icon {
        width: 30px !important;
        height: 30px !important;
        font-size: 14px !important;
    }
    
    .contact-item h4 {
        font-size: 11px !important;
        margin-bottom: 2px !important;
    }
    
    .contact-item p {
        font-size: 10px !important;
        line-height: 1.4 !important;
    }
    
    .consultation-form h3 {
        font-size: 16px !important;
        margin-bottom: 12px !important;
    }
    
    .form-grid {
        gap: 10px !important;
    }
    
    .form-group {
        margin-bottom: 10px !important;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px 8px !important;
        font-size: 12px !important;
    }
    
    .consultation-form .btn {
        padding: 12px 16px !important;
        font-size: 14px !important;
    }
    

}
/* 二维码区域手机端适配 */
@media (max-width: 768px) {
    .wechat-qr-box img {
        width: 140px !important;
        height: 140px !important;
    }
}