/* 响应式设计 - 移动端优化 */

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) {
    .container {
        padding: 0 16px;
    }
    
    .nav-container {
        padding: 0 16px;
    }
    
    .hero-container {
        gap: 40px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .about-content {
        gap: 60px;
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 32px;
    }
    
    .cases-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

/* 手机设备 (最大768px) */
@media (max-width: 768px) {
    /* 导航栏移动端样式 */
    .nav-container {
        padding: 0 16px;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 40px;
        transition: left 0.3s ease;
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-item {
        margin: 20px 0;
    }
    
    .nav-link {
        font-size: 18px;
        padding: 12px 24px;
    }
    
    .nav-actions {
        gap: 8px;
    }
    
    .contact-btn {
        padding: 6px 12px;
        font-size: 14px;
    }
    
    .consult-btn {
        padding: 8px 16px;
        font-size: 14px;
    }
    
    /* 首屏Banner移动端 */
    .hero {
        min-height: 80vh;
        padding: 100px 0 60px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 2.2rem;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
        margin-bottom: 24px;
    }
    
    .hero-tags {
        margin-bottom: 32px;
    }
    
    .hero-tags .tag {
        font-size: 14px;
        padding: 6px 12px;
        margin: 4px;
    }
    
    .hero-actions {
        justify-content: center;
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }
    
    .btn {
        width: 200px;
        justify-content: center;
    }
    
    .hero-visual {
        height: 250px;
    }
    
    .floating-element {
        opacity: 0.5;
    }
    
    .element-1 {
        width: 60px;
        height: 60px;
    }
    
    .element-2 {
        width: 40px;
        height: 40px;
    }
    
    .element-3 {
        width: 80px;
        height: 80px;
    }
    
    .element-4 {
        width: 30px;
        height: 30px;
    }
    
    /* 章节标题移动端 */
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-title {
        font-size: 2rem;
        margin-bottom: 12px;
    }
    
    .section-subtitle {
        font-size: 1rem;
        padding: 0 20px;
    }
    
    /* 公司简介移动端 */
    .about-preview {
        padding: 60px 0;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-description {
        font-size: 1rem;
        margin-bottom: 32px;
    }
    
    .company-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .stat-item {
        padding: 20px 16px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 0.9rem;
    }
    
    .about-features {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-item {
        padding: 24px 20px;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
        margin-bottom: 16px;
    }
    
    .feature-item h3 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }
    
    .feature-item p {
        font-size: 0.9rem;
    }
    
    /* 服务项目移动端 */
    .services-preview {
        padding: 60px 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .service-card {
        padding: 32px 24px;
    }
    
    .service-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
        margin-bottom: 20px;
    }
    
    .service-card h3 {
        font-size: 1.3rem;
        margin-bottom: 12px;
    }
    
    .service-card p {
        font-size: 0.95rem;
        margin-bottom: 20px;
    }
    
    .service-features {
        margin-bottom: 24px;
    }
    
    .service-features li {
        font-size: 0.9rem;
        padding: 6px 0;
    }
    
    /* 成功案例移动端 */
    .cases-preview {
        padding: 60px 0;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        margin-bottom: 40px;
    }
    
    .case-card {
        border-radius: 8px;
    }
    
    .case-image {
        height: 160px;
    }
    
    .case-placeholder {
        font-size: 36px;
    }
    
    .case-content {
        padding: 20px;
    }
    
    .case-content h3 {
        font-size: 1.2rem;
        margin-bottom: 10px;
    }
    
    .case-content p {
        font-size: 0.9rem;
        margin-bottom: 12px;
    }
    
    .case-tags .tag {
        font-size: 12px;
        padding: 3px 8px;
    }
    
    /* 页脚移动端 */
    .footer {
        padding: 60px 0 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: left;
    }
    
    .footer-section:first-child {
        text-align: center;
    }
    
    .footer-logo {
        justify-content: center;
        margin-bottom: 16px;
    }
    
    .footer-logo h3 {
        font-size: 1.2rem;
    }
    
    .footer-section h4 {
        font-size: 1rem;
        margin-bottom: 16px;
    }
    
    .footer-links {
        display: block;
    }
    
    .footer-links li {
        margin-bottom: 8px;
    }
    
    .contact-info .container {
        padding-left: 20px;
    }
    
    .contact-grid {
        padding-left: 12px;
    }
    
    .contact-info {
        margin-bottom: 20px;
    }
    
    .contact-item {
        justify-content: flex-start;
        margin-bottom: 12px;
        padding: 8px 0;
    }
    
    .contact-item i {
        flex-shrink: 0;
        margin-right: 8px;
    }
    
    .contact-item span {
        word-break: break-all;
        line-height: 1.4;
    }
    
    .social-links {
        justify-content: flex-start;
    }
    
    .footer-section:first-child .social-links {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
    
    .footer-legal {
        justify-content: center;
        gap: 16px;
    }
    
    /* 模态框移动端 */
    .modal-content {
        margin: 10% auto;
        width: 95%;
        max-width: none;
    }
    
    .modal-header {
        padding: 20px 24px;
    }
    
    .modal-header h3 {
        font-size: 1.2rem;
    }
    
    .modal-body {
        padding: 24px;
    }
    
    .consult-form {
        gap: 20px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px; /* 防止iOS缩放 */
    }
}

/* 小屏手机 (最大480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }
    
    .nav-container {
        padding: 0 12px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .company-stats {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .stat-item {
        padding: 16px 12px;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .service-card {
        padding: 24px 20px;
    }
    
    .case-content {
        padding: 16px;
    }
    
    .modal-content {
        margin: 5% auto;
    }
    
    .modal-header {
        padding: 16px 20px;
    }
    
    .modal-body {
        padding: 20px;
    }
}

/* 横屏手机优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        min-height: 100vh;
        padding: 80px 0 40px;
    }
    
    .hero-container {
        gap: 30px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-visual {
        height: 200px;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-icon svg,
    .footer-logo svg {
        image-rendering: -webkit-optimize-contrast;
    }
}

/* 打印样式 */
@media print {
    .header,
    .footer,
    .modal,
    .consult-btn,
    .contact-btn {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: 20px 0;
    }
    
    .hero-visual {
        display: none;
    }
    
    .section-title,
    .hero-title {
        color: #000 !important;
    }
    
    .btn {
        border: 1px solid #000;
        background: transparent !important;
        color: #000 !important;
    }
}

/* 无障碍访问优化 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .floating-element {
        animation: none;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    /* 可以根据需要添加深色模式样式 */
}

/* 技术优势响应式设计 */
@media (max-width: 768px) {
    .advantages-grid {
        flex-direction: column;
        align-items: center;
    }
    
    .advantage-item {
        min-width: 280px;
        max-width: 100%;
    }
}

/* 服务流程响应式设计 */
@media (max-width: 1024px) {
    .process-steps {
        gap: 15px;
        padding: 15px 0;
    }
    
    .process-step {
        min-width: 180px;
    }
    
    .step-number {
        width: 60px;
        height: 60px;
        font-size: 1.2rem;
        margin-bottom: 16px;
    }
    
    .process-step::after {
        top: 30px;
        left: calc(50% + 30px);
        width: calc(100% - 60px);
    }
}

@media (max-width: 768px) {
    .process-steps {
        flex-direction: column;
        gap: 30px;
        overflow-x: visible;
    }
    
    .process-step {
        min-width: 100%;
    }
    
    .process-step::after {
        display: none;
    }
    
    .step-number {
        width: 80px;
        height: 80px;
        font-size: 1.5rem;
        margin-bottom: 24px;
    }
}

@media (max-width: 480px) {
    .advantage-item {
        min-width: 100%;
        padding: 30px 20px;
    }
    
    .advantage-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .contact-info .container {
        padding-left: 16px;
    }
    
    .contact-grid {
        padding-left: 8px;
    }
}

/* 返回顶部按钮响应式 */
@media (max-width: 768px) {
    .scroll-to-top {
        width: 45px;
        height: 45px;
        font-size: 18px;
        bottom: 20px;
        right: 20px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .btn:hover,
    .nav-link:hover,
    .service-card:hover,
    .case-card:hover,
    .feature-item:hover,
    .stat-item:hover,
    .advantage-item:hover {
        transform: none;
    }
    
    .btn:active,
    .nav-link:active {
        transform: scale(0.98);
    }
}