/* 响应式设计 */

/* 平板设备 (768px - 991px) */
@media (max-width: 991px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        height: auto;
        min-height: 500px;
    }
    
    .hero-content {
        flex-direction: column;
        text-align: center;
        padding: 60px 0 80px;
    }
    
    .hero-text {
        padding-right: 0;
        margin-bottom: 40px;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-features {
        text-align: left;
        max-width: 500px;
        margin: 0 auto 30px;
    }
    
    .feature-grid {
        max-width: 500px;
        margin: 0 auto;
    }
    
    /* 行业痛点 - 改为2列 */
    .pain-points-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 解决方案 - 标签页改为垂直布局 */
    .solution-content {
        flex-direction: column;
    }
    
    .solution-text {
        border-right: none;
        border-bottom: 1px solid var(--light-gray);
    }
    
    .tab-headers {
        flex-direction: column;
        align-items: center;
    }
    
    .tab-header {
        flex: 0 1 100%;
        max-width: 400px;
    }
    
    /* 系统架构 - 改为2列 */
    .architecture-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 核心功能 - 改为2列 */
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 客户案例 - 改为2列 */
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 联系试用 */
    .qr-section {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }
    
    .contact-details {
        text-align: center;
    }
    
    .contact-item {
        justify-content: center;
    }
    
    /* 页脚 - 改为2列 */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

/* 手机设备 (576px - 767px) */
@media (max-width: 767px) {
    .navbar {
        padding: 15px 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        z-index: 999;
        backdrop-filter: blur(10px);
        border-top: 1px solid var(--light-gray);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-links li {
        margin: 0;
        width: 100%;
        text-align: center;
    }
    
    .nav-links a {
        display: block;
        padding: 15px 0;
        border-bottom: 1px solid var(--light-gray);
        font-size: 1.1rem;
    }
    
    .nav-links a:last-child {
        border-bottom: none;
    }
    
    .nav-links a.active:after {
        display: none;
    }
    
    .hero {
        margin-top: 70px;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-btns {
        flex-direction: column;
        gap: 10px;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1.1rem;
    }
    
    section {
        padding: 60px 0;
    }
    
    /* 行业痛点 - 改为1列 */
    .pain-points-grid {
        grid-template-columns: 1fr;
    }
    
    .pain-point-card {
        max-width: 400px;
        margin: 0 auto;
    }
    
    /* 解决方案 */
    .solution-text h3 {
        font-size: 1.5rem;
    }
    
    .feature-list {
        grid-template-columns: 1fr;
    }
    
    /* 系统架构 - 改为1列 */
    .architecture-grid {
        grid-template-columns: 1fr;
    }
    
    /* 核心功能 - 改为1列 */
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    /* 客户案例 - 改为1列 */
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .case-card {
        max-width: 400px;
        margin: 0 auto;
    }
    
    /* 功能分类按钮 */
    .feature-categories {
        gap: 10px;
    }
    
    .category-btn {
        flex: 1 1 calc(50% - 10px);
        justify-content: center;
        padding: 10px 15px;
        font-size: 0.9rem;
    }
    
    .category-btn span {
        font-size: 0.9rem;
    }
    
    .category-btn i {
        font-size: 1rem;
    }
    
    /* 联系试用 */
    .contact-info h2 {
        font-size: 2rem;
    }
    
    .contact-subtitle {
        font-size: 1.1rem;
    }
    
    .qr-code-img {
        width: 150px;
        height: 150px;
    }
    
    /* 页脚 - 改为1列 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-column {
        text-align: center;
    }
    
    .footer-links a:hover {
        transform: none;
    }
    
    .footer-column h3:after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .carousel-controls {
        bottom: 20px;
    }
    
    .carousel-prev,
    .carousel-next {
        width: 40px;
        height: 40px;
    }
}

/* 小手机设备 (< 576px) */
@media (max-width: 575px) {
    .hero-text h1 {
        font-size: 1.8rem;
    }
    
    .hero-text .hero-badge {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
    }
    
    .feature-item span {
        font-size: 1rem;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    .feature-card h4 {
        font-size: 1.1rem;
    }
    
    .feature-card p {
        font-size: 0.85rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .tab-header {
        flex: 0 1 100%;
    }
    
    .tab-title {
        font-size: 1.1rem;
    }
    
    .solution-text,
    .solution-image {
        padding: 25px;
    }
    
    .solution-text h3 {
        font-size: 1.3rem;
    }
    
    .demo-content {
        padding: 15px;
    }
    
    .inventory-flow {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-categories {
        flex-direction: column;
        align-items: center;
    }
    
    .category-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .cases-grid {
        gap: 20px;
    }
    
    .case-card {
        padding: 20px;
    }
    
    .contact-info h2 {
        font-size: 1.8rem;
    }
    
    .qr-code-img {
        width: 120px;
        height: 120px;
    }
    
    .contact-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 8px;
    }
    
    .contact-item h4 {
        margin-bottom: 2px;
    }
    
    .btn-large {
        padding: 15px 30px;
        font-size: 1.1rem;
    }
}

/* 超小设备 (< 375px) */
@media (max-width: 374px) {
    .hero-text h1 {
        font-size: 1.6rem;
    }
    
    .feature-grid {
        gap: 15px;
    }
    
    .feature-card {
        padding: 15px;
    }
    
    .pain-point-card,
    .case-card {
        padding: 20px 15px;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .qr-section {
        padding: 25px 15px;
    }
    
    .contact-item p {
        font-size: 1rem;
    }
}





/* 移动端响应式优化 */
@media (max-width: 1200px) {
    .container {
        padding: 0 15px;
    }
}

@media (max-width: 768px) {
    .top-section {
        padding: 30px 0;
    }
    
    .main-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .cases-container {
        gap: 15px;
    }
    
    .case-card {
        padding: 20px;
        height: 160px;
    }
    
    .chart-section {
        max-width: 100%;
        margin-top: 20px;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 24px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .section-subtitle {
        font-size: 14px;
    }
    
    .business-tags {
        justify-content: center;
    }
    
    .tag {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    .solution-btn {
        width: 100%;
        padding: 12px 24px;
    }
    
    .case-card {
        height: 150px;
        padding: 15px;
    }
    
    .case-name {
        font-size: 16px;
    }
    
    .case-description {
        font-size: 13px;
    }
}