/* 响应式设计 - 移动端优化 */

/* 平板设备 (992px 及以下) */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        padding-right: 0;
        margin-bottom: 50px;
    }

    .hero h1 {
        font-size: 2.8rem;
        margin-bottom: 30px;
    }

    .cta-buttons {
        justify-content: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-section .container {
        grid-template-columns: 1fr;
    }

    .products-grid.multi {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
        width: 100%;
        max-width: 100%;
    }

    .product-slider {
        width: 100%;
        padding: 0 20px;
    }

    .company-intro .container {
        grid-template-columns: 1fr;
    }

    .intro-image {
        order: -1;
    }

    .custom-service .container {
        flex-direction: column;
    }

    .custom-service-content {
        text-align: center;
    }

    .news-item {
        flex-direction: column;
    }

    .news-item-image {
        flex: 0 0 200px;
    }
}

/* 手机设备 (768px 及以下) */
@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
        margin-bottom: 30px;
    }

    .hero {
        padding: 60px 0;
    }

    .hero h1 {
        font-size: 2.2rem;
        margin-bottom: 20px;
    }

    .hero p {
        font-size: 1.1rem;
        margin-bottom: 25px;
    }

    .mobile-menu-btn {
        display: block;
    }

    nav {
        position: absolute;
        top: 80px;
        left: 0;
        background-color: white;
        width: 100%;
        padding: 0;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        max-height: 0;
        overflow: hidden;
        transition: var(--transition);
    }

    nav.active {
        max-height: 300px;
    }

    nav ul {
        flex-direction: column;
        padding: 20px 0;
    }

    nav ul li {
        margin: 0;
    }

    nav ul li a {
        display: block;
        padding: 10px 20px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }

    .footer-bottom-links {
        margin-top: 10px;
    }

    .footer-bottom-links a {
        margin: 0 10px;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .products-grid.multi {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .process-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .download-options {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .product-slider {
        gap: 20px;
        padding: 0 15px;
    }

    .product-card {
        flex: 0 0 280px;
    }

    .container {
        padding: 0 10px;
    }

    .project-process,
    .products,
    .download-section,
    .partners,
    .contact-section {
        padding: 60px 0;
    }

    /* 关于我们页面响应式 */
    .timeline:before {
        left: 30px;
    }

    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        float: right;
        width: calc(100% - 80px);
        margin-left: 80px;
    }

    .timeline-item:nth-child(odd) .timeline-date,
    .timeline-item:nth-child(even) .timeline-date {
        left: -40px;
        top: -30px;
    }

    .timeline-dot {
        left: 30px;
    }

    .mission-vision-cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .team-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    /* 产品页面响应式 */
    .product-features {
        grid-template-columns: 1fr;
    }

    .version-info {
        width: 100%;
        margin: 0 0 20px 0;
        padding: 20px;
    }

    .version-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    /* 新闻页面响应式 */
    .news-item {
        flex-direction: column;
    }

    .news-item-image {
        flex: 0 0 180px;
    }

    .news-item-content {
        padding: 20px;
    }

    /* 联系我们页面响应式 */
    .contact-info-card,
    .contact-form-container {
        padding: 20px;
    }

    /* 下载页面响应式 */
    .platform-tabs {
        flex-direction: column;
        gap: 5px;
        max-width: 300px;
        margin: 0 auto 40px;
    }

    .platform-tab {
        text-align: center;
        width: 100%;
    }
}

/* 小屏手机 (576px 及以下) */
@media (max-width: 576px) {
    .hero h1 {
        font-size: 1.8rem;
    }

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

    .section-title {
        font-size: 1.8rem;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }

    .btn {
        padding: 12px 20px;
        font-size: 14px;
        min-width: 150px;
    }

    .product-card {
        flex: 0 0 260px;
    }

    .process-card,
    .download-card {
        padding: 20px;
    }

    .contact-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .contact-item i {
        margin-right: 0;
        margin-top: 0;
    }

    .footer-content {
        gap: 30px;
    }

    .footer-link-group {
        margin-bottom: 20px;
    }

    /* 团队成员卡片 */
    .team-member {
        margin-bottom: 20px;
    }

    .member-image {
        height: 200px;
    }

    .member-info {
        padding: 15px;
    }

    /* 统计数据 */
    .stats-container {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .stat-item {
        padding: 15px;
    }

    .stat-number {
        font-size: 2rem;
    }

    /* 版本信息 */
    .version-info {
        padding: 15px;
    }

    .version-header h3 {
        font-size: 1.2rem;
    }

    /* 新闻卡片 */
    .news-item-content {
        padding: 15px;
    }

    .news-item-content h3 {
        font-size: 1.2rem;
    }

    /* 使命愿景卡片 */
    .mission-card,
    .vision-card,
    .values-card {
        padding: 20px 15px;
    }

    .card-icon {
        font-size: 2.5rem;
    }

    /* 时间线适配 */
    .timeline-content {
        padding: 15px;
    }

    .timeline-date {
        font-size: 0.8rem;
        padding: 6px 0;
        width: 100px;
    }
}

/* 超小屏设备 (480px 及以下) */
@media (max-width: 480px) {
    .container {
        padding: 0 8px;
    }

    .hero {
        padding: 40px 0;
    }

    .hero h1 {
        font-size: 1.6rem;
        line-height: 1.2;
    }

    .section-title {
        font-size: 1.6rem;
        margin-bottom: 25px;
    }

    .product-card {
        flex: 0 0 240px;
    }

    .btn {
        padding: 10px 16px;
        font-size: 13px;
        min-width: 120px;
    }

    .project-process,
    .products,
    .download-section,
    .partners,
    .contact-section {
        padding: 40px 0;
    }

    /* 页面标题适配 */
    .about-hero,
    .contact-hero,
    .download-hero {
        padding: 50px 0;
    }

    .about-hero h1,
    .contact-hero h1,
    .download-hero h1 {
        font-size: 2rem;
    }

    .about-hero p,
    .contact-hero p,
    .download-hero p {
        font-size: 1rem;
    }

    /* 产品特性网格 */
    .product-features {
        gap: 8px 15px;
    }

    .product-features span {
        font-size: 0.8rem;
    }

    /* 联系信息 */
    .contact-info h2 {
        font-size: 1.8rem;
    }

    /* 统计图标 */
    .stat-icon {
        font-size: 2.5rem;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .stat-title {
        font-size: 1rem;
    }
}

/* 横屏手机优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: 30px 0;
    }

    .hero h1 {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }

    .section-title {
        margin-bottom: 30px;
    }

    .about-hero,
    .contact-hero,
    .download-hero {
        padding: 40px 0;
    }

    .about-hero h1,
    .contact-hero h1,
    .download-hero h1 {
        font-size: 2rem;
        margin-bottom: 10px;
    }

    .project-process,
    .products,
    .download-section,
    .partners,
    .contact-section {
        padding: 30px 0;
    }
}

/* 高DPI屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }

    /* 确保高分辨率屏幕上的图像清晰度 */
    .hero-image img,
    .product-card img,
    .news-item-image img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    /* 增大触摸目标 */
    .btn {
        min-height: 44px;
        padding: 12px 20px;
    }

    nav ul li a {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    .mobile-menu-btn {
        min-width: 44px;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* 移除悬停效果，避免触摸设备上的粘滞状态 */
    .product-card:hover,
    .process-card:hover,
    .download-card:hover,
    .news-item:hover,
    .team-member:hover {
        transform: none;
    }

    /* 使用活动状态替代悬停 */
    .product-card:active,
    .process-card:active,
    .download-card:active {
        transform: translateY(-5px);
        transition: transform 0.1s ease;
    }
}