/* ==========================================================================
   响应式设计标准样式 - 移动端适配
   适用于所有页面
   ========================================================================== */

/* ==========================================================================
   断点定义
   ========================================================================== */
/* 超小屏幕 (手机竖屏) */
@media (max-width: 480px) {
    
    /* 顶部通栏 */
    .top-bar {
        padding: 4px 0;
    }
    
    .top-bar .container {
        flex-direction: column;
        gap: 6px;
        font-size: 10px;
        padding: 0 10px;
    }
    
    .top-bar-item {
        padding: 2px 6px;
    }
    
    /* Header & Navigation */
    .header {
        top: 60px;
        height: 50px;
    }
    
    .header .container {
        padding: 8px 12px;
    }
    
    .logo img {
        height: 35px !important;
    }
    
    .logo-slogan {
        display: none;
    }
    
    /* 导航菜单 - 移动端 */
    .nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.95);
        flex-direction: column;
        padding: 80px 20px 20px;
        z-index: 9999;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav.active {
        display: flex;
    }
    
    .nav a,
    .nav .dropdown-btn {
        color: white !important;
        padding: 16px 20px;
        font-size: 16px;
        width: 100%;
        text-align: left;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        min-height: 44px;
        display: flex;
        align-items: center;
        touch-action: manipulation;
        -webkit-tap-highlight-color: rgba(255, 255, 255, 0.2);
        transition: background-color 0.2s ease;
    }
    
    .nav a:active,
    .nav .dropdown-btn:active {
        background-color: rgba(255, 255, 255, 0.15);
    }
    
    .nav a:hover,
    .nav .dropdown-btn:hover {
        background-color: rgba(255, 255, 255, 0.1);
    }
    
    .nav .dropdown-content {
        position: static;
        background: rgba(255, 255, 255, 0.05);
        border: none;
        box-shadow: none;
        padding: 10px 0;
        margin: 0;
        display: none;
    }
    
    .nav .dropdown.active .dropdown-content {
        display: block;
    }
    
    .nav .dropdown-content a {
        color: rgba(255, 255, 255, 0.8) !important;
        padding: 10px 20px 10px 30px;
        font-size: 14px;
    }
    
    .nav .dropdown-content a:hover {
        color: white !important;
        background: rgba(255, 255, 255, 0.1);
    }
    
    .nav-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
        z-index: 10000;
        font-size: 22px;
        color: #333;
        background: none;
        border: none;
        cursor: pointer;
        padding: 12px;
        min-width: 44px;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        touch-action: manipulation;
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
        transition: transform 0.2s ease, color 0.2s ease;
    }
    
    .mobile-menu-btn:active {
        transform: scale(0.95);
        color: #00B42A;
    }
    
    .mobile-menu-btn.active {
        color: #00B42A;
    }
    
    /* Hero Banner */
    .hero-banner {
        padding: 20px 0 30px;
    }
    
    .hero-content {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 22px;
        margin-bottom: 12px;
        line-height: 1.2;
    }
    
    .hero-title-highlight {
        font-size: 18px;
        padding: 6px 14px;
        margin-bottom: 8px;
    }
    
    .hero-title-main {
        font-size: 20px;
        margin-bottom: 8px;
    }
    
    .hero-title .highlight {
        font-size: 18px;
        padding: 4px 10px;
    }
    
    .hero-subtitle {
        font-size: 13px;
        margin-bottom: 16px;
        line-height: 1.6;
    }
    
    .hero-subtitle-line {
        font-size: 13px;
        line-height: 1.5;
    }
    
    .hero-subtitle-line:first-child {
        font-size: 14px;
        padding: 8px 14px;
        margin-bottom: 12px;
    }
    
    /* Hero Actions */
    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: 12px;
        margin: 20px 0;
        padding: 0 15px;
    }
    
    .hero-action-btn {
        padding: 16px 24px;
        font-size: 14px;
        width: 100%;
        max-width: 280px;
        justify-content: center;
        border-radius: 24px;
        min-height: 44px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
        transition: all 0.3s ease;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }
    
    .hero-action-btn:active {
        transform: scale(0.98);
        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
    }
    
    .hero-action-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }
    
    .hero-action-icon {
        font-size: 16px;
    }
    
    /* Cost Comparison */
    .cost-comparison {
        padding: 20px 15px;
        border-radius: 16px;
    }
    
    .cost-comparison-wrapper {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 0 10px;
    }
    
    .cost-gap-display {
        padding: 20px 15px;
    }
    
    .chart-title {
        font-size: 18px;
        margin-bottom: 20px;
    }
    
    .chart-bars {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .bar-group {
        padding: 18px;
    }
    
    .bar-label {
        font-size: 15px;
        margin-bottom: 14px;
    }
    
    .bar-header {
        margin-bottom: 8px;
    }
    
    .bar-name {
        font-size: 11px;
    }
    
    .bar-amount {
        font-size: 20px;
    }
    
    .bar-wrapper {
        height: 45px;
    }
    
    .bar-fill::after {
        font-size: 11px;
        right: 10px;
    }
    
    .bar-group:last-child .bar-fill {
        min-width: 70px;
    }
    
    .bar-group:last-child .bar-fill::after {
        left: 70px;
    }
    
    .chart-note {
        font-size: 10px;
        padding: 8px 14px;
        margin-top: 15px;
    }
    
    /* Comparison Cards */
    .comparison-cards {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .comparison-card {
        padding: 20px;
    }
    
    .card-header {
        margin-bottom: 15px;
    }
    
    .card-title {
        font-size: 16px;
    }
    
    .price-value {
        font-size: 20px;
    }
    
    .vs-divider {
        display: none;
    }
    
    /* Features Grid */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .feature-item {
        padding: 20px 15px;
        border-radius: 12px;
        transition: all 0.3s ease;
        touch-action: manipulation;
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    }
    
    .feature-item:active {
        transform: scale(0.98);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    }
    
    .feature-item:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
    
    .feature-icon {
        font-size: 32px;
        margin-bottom: 10px;
    }
    
    .feature-title {
        font-size: 14px;
        margin-bottom: 6px;
    }
    
    .feature-desc {
        font-size: 12px;
    }
    
    /* Cases Grid */
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .case-item {
        padding: 20px;
        border-radius: 12px;
        transition: all 0.3s ease;
        touch-action: manipulation;
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    }
    
    .case-item:active {
        transform: scale(0.98);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    }
    
    .case-item:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
    
    .case-title {
        font-size: 15px;
        margin-bottom: 8px;
    }
    
    .case-desc {
        font-size: 13px;
    }
    
    /* Target Cards */
    .target-cards {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .target-card {
        padding: 20px;
        border-radius: 12px;
        transition: all 0.3s ease;
        touch-action: manipulation;
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    }
    
    .target-card:active {
        transform: scale(0.98);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    }
    
    .target-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
    
    .card-title {
        font-size: 17px;
    }
    
    .card-pain {
        font-size: 13px;
    }
    
    .card-solution {
        font-size: 12px;
        padding: 10px;
    }
    
    /* Section */
    .section {
        padding: 40px 15px;
    }
    
    .section-title {
        font-size: 24px;
        margin-bottom: 30px;
    }
    
    /* Comparison Table */
    .comparison-table {
        font-size: 11px;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 10px 6px;
    }
    
    /* Buttons */
    .btn {
        padding: 12px 24px;
        font-size: 14px;
        min-height: 44px;
        min-width: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        touch-action: manipulation;
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
        transition: all 0.3s ease;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }
    
    .btn:active {
        transform: scale(0.98);
        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
    }
    
    .btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }
    
    .contact-btn {
        padding: 10px 20px;
        font-size: 12px;
        min-height: 40px;
    }
    
    /* Hero Tabs */
    .hero-tabs {
        flex-direction: column;
        gap: 10px;
        margin: 20px 0;
    }
    
    .hero-tab {
        padding: 12px 16px;
        font-size: 13px;
    }
    
    .tab-icon {
        font-size: 20px;
    }
    
    .tab-text {
        font-size: 12px;
    }
    
    /* Gap Display */
    .gap-bar {
        padding: 12px 18px;
    }
    
    .gap-value {
        font-size: 20px;
    }
    
    .gap-vs {
        width: 50px;
        height: 50px;
        font-size: 18px;
    }
    
    .gap-savings {
        padding: 10px 18px;
        font-size: 13px;
    }
    
    .gap-savings strong {
        font-size: 18px;
    }
    
    /* Scenario Solutions - 4列布局移动端适配 */
    #scenarios .container > div {
        grid-template-columns: 1fr !important;
        gap: 15px !important;
    }
    
    #scenarios .container > div > div {
        padding: 20px 18px !important;
    }
    
    #scenarios .container > div > div > div > div:nth-child(1) {
        width: 42px !important;
        height: 42px !important;
    }
    
    #scenarios .container > div > div > div > div:nth-child(1) i {
        font-size: 20px !important;
    }
    
    #scenarios .container > div > div > div > h3 {
        font-size: 16px !important;
    }
    
    #scenarios .container > div > div > div > div:nth-child(3) {
        font-size: 11px !important;
    }
    
    #scenarios .container > div > div > div > div:nth-child(4) {
        gap: 12px !important;
    }
    
    #scenarios .container > div > div > div > div:nth-child(4) > div {
        font-size: 9px !important;
    }
    
    #scenarios .container > div > div > div > div:nth-child(4) > div > div:last-child {
        font-size: 14px !important;
    }
    
    #scenarios .container > div > div > div > a {
        font-size: 12px !important;
        padding: 7px 14px !important;
    }
}

/* 小屏幕 (手机横屏) */
@media (min-width: 481px) and (max-width: 768px) {
    
    /* 顶部通栏 */
    .top-bar {
        padding: 5px 0;
    }
    
    .top-bar .container {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
        font-size: 11px;
    }
    
    /* Header & Navigation */
    .header {
        top: 65px;
        height: 52px;
    }
    
    .header .container {
        padding: 10px 15px;
    }
    
    .logo img {
        height: 38px !important;
    }
    
    .logo-slogan {
        display: none;
    }
    
    /* 导航菜单 - 移动端 */
    .nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.95);
        flex-direction: column;
        padding: 80px 20px 20px;
        z-index: 9999;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav.active {
        display: flex;
    }
    
    .nav a,
    .nav .dropdown-btn {
        color: white !important;
        padding: 15px 20px;
        font-size: 16px;
        width: 100%;
        text-align: left;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav .dropdown-content {
        position: static;
        background: rgba(255, 255, 255, 0.05);
        border: none;
        box-shadow: none;
        padding: 10px 0;
        margin: 0;
        display: none;
    }
    
    .nav .dropdown.active .dropdown-content {
        display: block;
    }
    
    .nav .dropdown-content a {
        color: rgba(255, 255, 255, 0.8) !important;
        padding: 10px 20px 10px 30px;
        font-size: 14px;
    }
    
    .nav .dropdown-content a:hover {
        color: white !important;
        background: rgba(255, 255, 255, 0.1);
    }
    
    .nav-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
        z-index: 10000;
        font-size: 24px;
        color: #333;
        background: none;
        border: none;
        cursor: pointer;
        padding: 10px;
    }
    
    /* Hero Banner */
    .hero-banner {
        padding: 25px 0 35px;
    }
    
    .hero-content {
        padding: 0 20px;
    }
    
    .hero-title {
        font-size: 26px;
        margin-bottom: 16px;
    }
    
    .hero-title-highlight {
        font-size: 22px;
        padding: 8px 18px;
        margin-bottom: 10px;
    }
    
    .hero-title-main {
        font-size: 24px;
        margin-bottom: 10px;
    }
    
    .hero-title .highlight {
        font-size: 22px;
        padding: 5px 14px;
    }
    
    .hero-subtitle {
        font-size: 14px;
        margin-bottom: 20px;
    }
    
    .hero-subtitle-line {
        font-size: 14px;
    }
    
    .hero-subtitle-line:first-child {
        font-size: 16px;
        padding: 10px 18px;
        margin-bottom: 14px;
    }
    
    /* Hero Actions */
    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: 14px;
        margin: 24px 0;
        padding: 0 20px;
    }
    
    .hero-action-btn {
        padding: 14px 28px;
        font-size: 15px;
        width: 100%;
        max-width: 320px;
        justify-content: center;
    }
    
    /* Cost Comparison */
    .cost-comparison {
        padding: 25px 20px;
    }
    
    .cost-comparison-wrapper {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 15px;
    }
    
    .cost-gap-display {
        padding: 22px 18px;
    }
    
    .chart-title {
        font-size: 20px;
        margin-bottom: 25px;
    }
    
    .chart-bars {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    
    .bar-group {
        padding: 20px;
    }
    
    .bar-label {
        font-size: 16px;
        margin-bottom: 16px;
    }
    
    .bar-header {
        margin-bottom: 10px;
    }
    
    .bar-name {
        font-size: 12px;
    }
    
    .bar-amount {
        font-size: 22px;
    }
    
    .bar-wrapper {
        height: 48px;
    }
    
    .bar-fill::after {
        font-size: 12px;
    }
    
    .chart-note {
        font-size: 11px;
        padding: 10px 18px;
        margin-top: 18px;
    }
    
    /* Comparison Cards */
    .comparison-cards {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    
    .comparison-card {
        padding: 22px;
    }
    
    .card-title {
        font-size: 17px;
    }
    
    .price-value {
        font-size: 22px;
    }
    
    .vs-divider {
        display: none;
    }
    
    /* Features Grid */
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }
    
    .feature-item {
        padding: 22px 18px;
    }
    
    .feature-icon {
        font-size: 34px;
        margin-bottom: 12px;
    }
    
    .feature-title {
        font-size: 15px;
        margin-bottom: 8px;
    }
    
    .feature-desc {
        font-size: 13px;
    }
    
    /* Cases Grid */
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }
    
    .case-item {
        padding: 22px;
    }
    
    .case-title {
        font-size: 16px;
        margin-bottom: 10px;
    }
    
    .case-desc {
        font-size: 14px;
    }
    
    /* Target Cards */
    .target-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }
    
    .target-card {
        padding: 22px;
    }
    
    .card-title {
        font-size: 18px;
    }
    
    .card-pain {
        font-size: 14px;
    }
    
    .card-solution {
        font-size: 13px;
        padding: 12px;
    }
    
    /* Section */
    .section {
        padding: 50px 20px;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 35px;
    }
    
    /* Comparison Table */
    .comparison-table {
        font-size: 12px;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 12px 10px;
    }
    
    /* Buttons */
    .btn {
        padding: 12px 24px;
        font-size: 15px;
    }
    
    .contact-btn {
        padding: 10px 20px;
        font-size: 13px;
    }
    
    /* Hero Tabs */
    .hero-tabs {
        gap: 12px;
        margin: 25px 0;
    }
    
    .hero-tab {
        padding: 14px 18px;
        font-size: 14px;
    }
    
    .tab-icon {
        font-size: 22px;
    }
    
    .tab-text {
        font-size: 13px;
    }
    
    /* Gap Display */
    .gap-bar {
        padding: 14px 20px;
    }
    
    .gap-value {
        font-size: 22px;
    }
    
    .gap-vs {
        width: 55px;
        height: 55px;
        font-size: 20px;
    }
    
    .gap-savings {
        padding: 12px 22px;
        font-size: 14px;
    }
    
    .gap-savings strong {
        font-size: 20px;
    }
    
    /* Scenario Solutions - 4列布局小屏幕适配 */
    #scenarios .container > div {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 18px !important;
    }
    
    #scenarios .container > div > div {
        padding: 22px 20px !important;
    }
    
    #scenarios .container > div > div > div > div:nth-child(1) {
        width: 45px !important;
        height: 45px !important;
    }
    
    #scenarios .container > div > div > div > div:nth-child(1) i {
        font-size: 21px !important;
    }
    
    #scenarios .container > div > div > div > h3 {
        font-size: 17px !important;
    }
    
    #scenarios .container > div > div > div > div:nth-child(3) {
        font-size: 11px !important;
    }
    
    #scenarios .container > div > div > div > div:nth-child(4) {
        gap: 14px !important;
    }
    
    #scenarios .container > div > div > div > div:nth-child(4) > div {
        font-size: 10px !important;
    }
    
    #scenarios .container > div > div > div > div:nth-child(4) > div > div:last-child {
        font-size: 15px !important;
    }
    
    #scenarios .container > div > div > div > a {
        font-size: 13px !important;
        padding: 8px 16px !important;
    }
}

/* 中等屏幕 (平板) */
@media (min-width: 769px) and (max-width: 1024px) {
    
    /* 顶部通栏 */
    .top-bar .container {
        font-size: 11px;
        gap: 16px;
    }
    
    /* Header & Navigation */
    .header {
        height: 55px;
    }
    
    .header .container {
        padding: 12px 18px;
    }
    
    .logo img {
        height: 42px !important;
    }
    
    .logo-slogan {
        font-size: 12px;
    }
    
    /* 导航菜单 */
    .nav {
        gap: 14px;
    }
    
    .nav a {
        padding: 8px 12px;
        font-size: 14px;
    }
    
    .nav .dropdown-btn {
        padding: 8px 12px;
        font-size: 14px;
    }
    
    .nav .dropdown-content {
        min-width: 700px;
        max-width: 900px;
    }
    
    /* Hero Banner */
    .hero-banner {
        padding: 30px 0 45px;
    }
    
    .hero-content {
        padding: 0 30px;
    }
    
    .hero-title {
        font-size: 34px;
        margin-bottom: 20px;
    }
    
    .hero-title-highlight {
        font-size: 28px;
        padding: 10px 22px;
        margin-bottom: 14px;
    }
    
    .hero-title-main {
        font-size: 30px;
        margin-bottom: 14px;
    }
    
    .hero-title .highlight {
        font-size: 26px;
        padding: 6px 16px;
    }
    
    .hero-subtitle {
        font-size: 15px;
        margin-bottom: 24px;
    }
    
    .hero-subtitle-line {
        font-size: 15px;
    }
    
    .hero-subtitle-line:first-child {
        font-size: 17px;
        padding: 12px 22px;
        margin-bottom: 16px;
    }
    
    /* Hero Actions */
    .hero-actions {
        gap: 16px;
        margin: 30px 0;
        padding: 0 30px;
    }
    
    .hero-action-btn {
        padding: 15px 30px;
        font-size: 15px;
    }
    
    /* Cost Comparison */
    .cost-comparison {
        padding: 30px 25px;
    }
    
    .cost-comparison-wrapper {
        grid-template-columns: 300px 1fr;
        gap: 22px;
        padding: 0 18px;
    }
    
    .cost-gap-display {
        padding: 24px 20px;
    }
    
    .chart-title {
        font-size: 22px;
        margin-bottom: 28px;
    }
    
    .chart-bars {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .bar-group {
        padding: 22px;
    }
    
    .bar-label {
        font-size: 17px;
        margin-bottom: 18px;
    }
    
    .bar-header {
        margin-bottom: 10px;
    }
    
    .bar-name {
        font-size: 12px;
    }
    
    .bar-amount {
        font-size: 24px;
    }
    
    .bar-wrapper {
        height: 50px;
    }
    
    .bar-fill::after {
        font-size: 13px;
    }
    
    .chart-note {
        font-size: 12px;
        padding: 10px 20px;
        margin-top: 20px;
    }
    
    /* Comparison Cards */
    .comparison-cards {
        grid-template-columns: 1fr auto 1fr;
        gap: 20px;
    }
    
    .comparison-card {
        padding: 24px;
    }
    
    .card-title {
        font-size: 18px;
    }
    
    .price-value {
        font-size: 24px;
    }
    
    .vs-divider {
        display: flex;
    }
    
    /* Features Grid */
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    
    .feature-item {
        padding: 24px 20px;
    }
    
    .feature-icon {
        font-size: 36px;
        margin-bottom: 14px;
    }
    
    .feature-title {
        font-size: 16px;
        margin-bottom: 10px;
    }
    
    .feature-desc {
        font-size: 13px;
    }
    
    /* Cases Grid */
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .case-item {
        padding: 24px;
    }
    
    .case-title {
        font-size: 17px;
        margin-bottom: 12px;
    }
    
    .case-desc {
        font-size: 14px;
    }
    
    /* Target Cards */
    .target-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .target-card {
        padding: 24px;
    }
    
    .card-title {
        font-size: 19px;
    }
    
    .card-pain {
        font-size: 14px;
    }
    
    .card-solution {
        font-size: 13px;
        padding: 14px;
    }
    
    /* Section */
    .section {
        padding: 60px 20px;
    }
    
    .section-title {
        font-size: 30px;
        margin-bottom: 40px;
    }
    
    /* Comparison Table */
    .comparison-table {
        font-size: 13px;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 14px 12px;
    }
    
    /* Buttons */
    .btn {
        padding: 12px 26px;
        font-size: 15px;
    }
    
    .contact-btn {
        padding: 10px 22px;
        font-size: 13px;
    }
    
    /* Hero Tabs */
    .hero-tabs {
        gap: 14px;
        margin: 28px 0;
    }
    
    .hero-tab {
        padding: 14px 20px;
        font-size: 14px;
    }
    
    .tab-icon {
        font-size: 24px;
    }
    
    .tab-text {
        font-size: 13px;
    }
    
    /* Gap Display */
    .gap-bar {
        padding: 16px 22px;
    }
    
    .gap-value {
        font-size: 24px;
    }
    
    .gap-vs {
        width: 60px;
        height: 60px;
        font-size: 22px;
    }
    
    .gap-savings {
        padding: 14px 24px;
        font-size: 15px;
    }
    
    .gap-savings strong {
        font-size: 22px;
    }
}

/* 大屏幕 (桌面) */
@media (min-width: 1025px) {
    
    /* 顶部通栏 */
    .top-bar .container {
        font-size: 11px;
        gap: 20px;
    }
    
    /* Header & Navigation */
    .header {
        height: 60px;
    }
    
    .header .container {
        padding: 14px 20px;
    }
    
    .logo img {
        height: 45px !important;
    }
    
    .logo-slogan {
        font-size: 13px;
    }
    
    /* 导航菜单 */
    .nav {
        gap: 16px;
    }
    
    .nav a {
        padding: 8px 14px;
        font-size: 14px;
    }
    
    .nav .dropdown-btn {
        padding: 8px 14px;
        font-size: 14px;
    }
    
    .nav .dropdown-content {
        min-width: 800px;
        max-width: 1000px;
    }
    
    /* Hero Banner */
    .hero-banner {
        padding: 35px 0 50px;
    }
    
    .hero-content {
        padding: 0 40px;
    }
    
    .hero-title {
        font-size: 42px;
        margin-bottom: 24px;
    }
    
    .hero-title-highlight {
        font-size: 36px;
        padding: 12px 24px;
        margin-bottom: 20px;
    }
    
    .hero-title-main {
        font-size: 30px;
        margin-bottom: 8px;
    }
    
    .hero-title .highlight {
        font-size: 26px;
        padding: 6px 16px;
    }
    
    .hero-subtitle {
        font-size: 14px;
        margin-bottom: 24px;
    }
    
    .hero-subtitle-line {
        font-size: 16px;
    }
    
    .hero-subtitle-line:first-child {
        font-size: 18px;
        padding: 10px 20px;
        margin-bottom: 12px;
    }
    
    /* Hero Actions */
    .hero-actions {
        gap: 20px;
        margin: 48px 0;
        padding: 0 40px;
    }
    
    .hero-action-btn {
        padding: 16px 32px;
        font-size: 16px;
    }
    
    /* Cost Comparison */
    .cost-comparison {
        padding: 35px 40px;
    }
    
    .cost-comparison-wrapper {
        grid-template-columns: 360px 1fr;
        gap: 25px;
        padding: 0 20px;
    }
    
    .cost-gap-display {
        padding: 25px 20px;
    }
    
    .chart-title {
        font-size: 20px;
        margin-bottom: 25px;
    }
    
    .chart-bars {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .bar-group {
        padding: 24px;
    }
    
    .bar-label {
        font-size: 16px;
        margin-bottom: 18px;
    }
    
    .bar-header {
        margin-bottom: 8px;
    }
    
    .bar-name {
        font-size: 11px;
    }
    
    .bar-amount {
        font-size: 22px;
    }
    
    .bar-wrapper {
        height: 45px;
    }
    
    .bar-fill::after {
        font-size: 12px;
    }
    
    .chart-note {
        font-size: 11px;
        padding: 8px 20px;
        margin-top: 20px;
    }
    
    /* Comparison Cards */
    .comparison-cards {
        grid-template-columns: 1fr auto 1fr;
        gap: 20px;
    }
    
    .comparison-card {
        padding: 25px;
    }
    
    .card-title {
        font-size: 18px;
    }
    
    .price-value {
        font-size: 24px;
    }
    
    .vs-divider {
        display: flex;
    }
    
    /* Features Grid */
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }
    
    .feature-item {
        padding: 25px 20px;
    }
    
    .feature-icon {
        font-size: 36px;
        margin-bottom: 12px;
    }
    
    .feature-title {
        font-size: 15px;
        margin-bottom: 8px;
    }
    
    .feature-desc {
        font-size: 12px;
    }
    
    /* Cases Grid */
    .cases-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    
    .case-item {
        padding: 25px;
    }
    
    .case-title {
        font-size: 16px;
        margin-bottom: 10px;
    }
    
    .case-desc {
        font-size: 13px;
    }
    
    /* Target Cards */
    .target-cards {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    
    .target-card {
        padding: 25px;
    }
    
    .card-title {
        font-size: 19px;
    }
    
    .card-pain {
        font-size: 13px;
    }
    
    .card-solution {
        font-size: 13px;
        padding: 12px;
    }
    
    /* Section */
    .section {
        padding: 70px 20px;
    }
    
    .section-title {
        font-size: 32px;
        margin-bottom: 45px;
    }
    
    /* Comparison Table */
    .comparison-table {
        font-size: 14px;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 20px;
    }
    
    /* Buttons */
    .btn {
        padding: 14px 28px;
        font-size: 16px;
    }
    
    .contact-btn {
        padding: 10px 24px;
        font-size: 14px;
    }
    
    /* Hero Tabs */
    .hero-tabs {
        gap: 15px;
        margin: 30px 0;
    }
    
    .hero-tab {
        padding: 14px 20px;
        font-size: 13px;
    }
    
    .tab-icon {
        font-size: 24px;
    }
    
    .tab-text {
        font-size: 13px;
    }
    
    /* Gap Display */
    .gap-bar {
        padding: 15px 24px;
    }
    
    .gap-value {
        font-size: 24px;
    }
    
    .gap-vs {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .gap-savings {
        padding: 12px 24px;
        font-size: 15px;
    }
    
    .gap-savings strong {
        font-size: 22px;
    }
}

/* ==========================================================================
   移动端菜单按钮样式
   ========================================================================== */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #333;
    cursor: pointer;
    padding: 10px;
    transition: all 0.3s ease;
    z-index: 10000;
}

.mobile-menu-btn:hover {
    color: var(--primary-color);
}

.mobile-menu-btn.active {
    color: var(--primary-color);
}

/* ==========================================================================
   移动端菜单遮罩层
   ========================================================================== */
.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9998;
}

.menu-overlay.active {
    display: block;
}

/* ==========================================================================
   滚动条样式优化
   ========================================================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* 移动端滚动条优化 */
@media (max-width: 768px) {
    ::-webkit-scrollbar {
        width: 4px;
        height: 4px;
    }
    
    ::-webkit-scrollbar-thumb {
        background: rgba(10, 186, 181, 0.5);
    }
}

/* ==========================================================================
   触摸优化
   ========================================================================== */
@media (hover: none) and (pointer: coarse) {
    .nav a,
    .nav .dropdown-btn,
    .btn,
    .hero-action-btn {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .dropdown-content a {
        min-height: 48px;
    }
}

/* ==========================================================================
   平台采购链接样式
   ========================================================================== */
.platform-purchase-link {
    background: linear-gradient(135deg, #00B42A, #36CFC9) !important;
    color: white !important;
    padding: 12px 24px !important;
    border-radius: 8px !important;
    font-weight: 600 !important;
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    transition: all 0.3s ease !important;
    box-shadow: 0 4px 12px rgba(0, 180, 42, 0.3) !important;
}

.platform-purchase-link:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 16px rgba(0, 180, 42, 0.4) !important;
    background: linear-gradient(135deg, #36CFC9, #00B42A) !important;
}

.platform-purchase-link i {
    font-size: 14px !important;
}

@media (max-width: 768px) {
    .platform-purchase-link {
        justify-content: center !important;
        margin: 10px 0 !important;
        padding: 14px 20px !important;
        min-height: 48px !important;
        font-size: 16px !important;
        box-shadow: 0 4px 12px rgba(0, 180, 42, 0.4) !important;
    }
    
    .platform-purchase-link:hover {
        transform: translateY(-2px) scale(1.02) !important;
        box-shadow: 0 6px 16px rgba(0, 180, 42, 0.5) !important;
    }
    
    .platform-purchase-link:active {
        transform: translateY(0) scale(0.98) !important;
        box-shadow: 0 2px 8px rgba(0, 180, 42, 0.3) !important;
    }
}

/* ==========================================================================
   打印样式
   ========================================================================== */
@media print {
    .mobile-menu-btn,
    .menu-overlay {
        display: none !important;
    }
    
    .nav {
        display: none !important;
    }
    
    .hero-banner {
        padding: 20px 0;
    }
    
    .cost-comparison {
        box-shadow: none;
        border: 1px solid #e2e8f0;
    }
}