/* Responsive CSS - DeepDomain */

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .container {
        padding: 0 2rem;
    }

    /* 导航栏 */
    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    /* Hero区域 */
    .hero h1 {
        font-size: 3rem;
    }

    .hero p {
        font-size: 1.125rem;
    }

    /* 功能详情 */
    .feature-detail-content {
        gap: 4rem;
    }

    .feature-detail h2 {
        font-size: 2rem;
    }

    /* 定价网格 - 平板端 */
    .pricing-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 1.5rem;
    }

    /* 定价表格 */
    .table-header,
    .table-row {
        grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
        font-size: 0.9rem;
    }

    .table-cell {
        padding: 1rem 0.5rem;
    }


}

/* 移动设备 (最大768px) */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    /* 导航栏 */
    .nav {
        padding: 1rem 0;
    }

    .nav-brand {
        font-size: 1.25rem;
    }

    .mobile-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100vh;
        background: var(--bg-primary);
        z-index: 1000;
        transition: left 0.3s ease;
        padding: 2rem;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
    }

    .mobile-menu.active {
        left: 0;
    }

    .mobile-menu a {
        font-size: 1.5rem;
        color: var(--text-primary);
        text-decoration: none;
        padding: 1rem;
        border-bottom: 1px solid var(--border-color);
        width: 100%;
        text-align: center;
    }

    .mobile-menu-close {
        position: absolute;
        top: 2rem;
        right: 2rem;
        background: none;
        border: none;
        color: var(--text-primary);
        font-size: 2rem;
        cursor: pointer;
    }

    /* 页面标题 */
    .page-header {
        padding: 100px 0 60px;
    }

    .page-header h1 {
        font-size: 2.5rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    /* Hero区域 */
    .hero {
        padding: 120px 0 80px;
    }

    .hero h1 {
        font-size: 2.5rem;
        line-height: 1.2;
    }

    .hero p {
        font-size: 1rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
    }

    /* 功能概览 */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    /* 功能详情 */
    .feature-detail {
        padding: 60px 0;
    }

    .feature-detail-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .feature-detail.alternate .feature-detail-content {
        grid-template-columns: 1fr;
    }

    .feature-detail h2 {
        font-size: 2rem;
    }

    .feature-description {
        font-size: 1rem;
    }

    .feature-actions {
        justify-content: center;
        flex-wrap: wrap;
    }

    .feature-visual-card {
        padding: 2rem;
        min-height: 200px;
    }

    /* 定价网格 */
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .pricing-card {
        padding: 2rem;
    }

    .pricing-header h3 {
        font-size: 1.25rem;
    }

    .price-amount {
        font-size: 2.5rem;
    }

    /* 定价表格 */
    .traffic-table {
        overflow-x: auto;
    }

    .table-header,
    .table-row {
        grid-template-columns: 120px 100px 100px 100px 150px;
        min-width: 570px;
        font-size: 0.8rem;
    }

    .table-cell {
        padding: 1rem 0.5rem;
        font-size: 0.8rem;
    }

    .plan-name {
        font-size: 0.9rem;
    }

    .plan-desc {
        font-size: 0.75rem;
    }

    /* 计费说明 */
    .billing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .billing-section {
        padding: 60px 0;
    }

    .billing-content h2 {
        font-size: 2rem;
    }



    /* 支持类型 */
    .support-types-section {
        padding: 60px 0;
    }

    .support-types-content h2 {
        font-size: 2rem;
    }

    .support-types-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    /* FAQ */
    .faq-section {
        padding: 60px 0;
    }

    .faq-content h2 {
        font-size: 2rem;
    }

    .faq-question {
        padding: 1rem;
    }

    .faq-question h4 {
        font-size: 1rem;
    }

    .faq-answer.active {
        padding: 1rem;
    }

    /* CTA */
    .cta-section {
        padding: 60px 0;
    }

    .cta-content h2 {
        font-size: 2rem;
    }

    .cta-content p {
        font-size: 1rem;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }

    .cta-actions .btn {
        width: 100%;
        max-width: 300px;
    }

    /* 页脚 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-section h4 {
        margin-bottom: 1rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }
}

/* 小屏幕移动设备 (最大480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    /* 页面标题 */
    .page-header h1 {
        font-size: 2rem;
    }

    /* Hero区域 */
    .hero h1 {
        font-size: 2rem;
    }

    /* 功能详情 */
    .feature-detail h2 {
        font-size: 1.75rem;
    }

    .feature-badge {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }

    /* 定价卡片 */
    .pricing-card {
        padding: 1.5rem;
    }

    .price-amount {
        font-size: 2rem;
    }

    /* 定价表格 */
    .table-header,
    .table-row {
        grid-template-columns: 100px 80px 80px 80px 120px;
        min-width: 460px;
        font-size: 0.75rem;
    }

    .table-cell {
        padding: 0.75rem 0.25rem;
        font-size: 0.75rem;
    }



    /* 按钮 */
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }

    .btn.large {
        padding: 1rem 2rem;
        font-size: 1rem;
    }

    /* 工具类 */
    .text-center-mobile {
        text-align: center;
    }
}

/* 超小屏幕设备 (最大360px) */
@media (max-width: 360px) {
    .container {
        padding: 0 0.75rem;
    }

    /* 页面标题 */
    .page-header {
        padding: 80px 0 40px;
    }

    .page-header h1 {
        font-size: 1.75rem;
    }

    /* Hero区域 */
    .hero {
        padding: 100px 0 60px;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    /* 功能详情 */
    .feature-detail {
        padding: 40px 0;
    }

    .feature-detail h2 {
        font-size: 1.5rem;
    }

    /* 定价表格 */
    .table-header,
    .table-row {
        grid-template-columns: 90px 70px 70px 70px 100px;
        min-width: 400px;
        font-size: 0.7rem;
    }

    .table-cell {
        padding: 0.5rem 0.25rem;
        font-size: 0.7rem;
    }

    /* 各个section的padding调整 */
    .features-section,
    .pricing-section,
    .contact-section,
    .support-types-section,
    .faq-section,
    .cta-section,
    .billing-section,
    .traffic-section {
        padding: 40px 0;
    }

    /* 标题字体大小调整 */
    .features-content h2,
    .pricing-content h2,
    .billing-content h2,
    .traffic-content h2,
    .support-types-content h2,
    .faq-content h2,
    .cta-content h2 {
        font-size: 1.75rem;
    }
}

/* 横屏模式优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: 60px 0 40px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .page-header {
        padding: 80px 0 40px;
    }

    .mobile-menu {
        padding: 1rem;
        gap: 1rem;
    }

    .mobile-menu a {
        font-size: 1.25rem;
        padding: 0.5rem;
    }
}

/* 高分辨率屏幕优化 */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }

    .hero h1 {
        font-size: 4rem;
    }

    .hero p {
        font-size: 1.375rem;
    }

    .page-header h1 {
        font-size: 4rem;
    }

    .feature-detail h2 {
        font-size: 3rem;
    }

    .pricing-content h2,
    .billing-content h2,
    .traffic-content h2,
    .support-types-content h2,
    .faq-content h2,
    .cta-content h2 {
        font-size: 3rem;
    }
}

/* 打印样式 */
@media print {
    .nav,
    .mobile-menu-toggle,
    .mobile-menu,
    .hero-actions,
    .feature-actions,
    .cta-actions,
    .contact-form,
    .btn {
        display: none !important;
    }

    .page-header,
    .hero {
        padding: 2rem 0;
    }

    .feature-detail,
    .pricing-section,
    .contact-section,
    .support-types-section,
    .faq-section,
    .cta-section {
        padding: 1rem 0;
    }

    body {
        background: white !important;
        color: black !important;
    }

    .pricing-card,
    .contact-method,
    .support-type-card,
    .faq-item {
        border: 1px solid #ccc !important;
        background: white !important;
    }
}