/* 响应式设计 */

/* 大屏幕 (1024px以下) */
@media (max-width: 1024px) {
    .container {
        padding: 10px 22px;
    }

    .section {
        padding: 64px 0;
    }

    .section-title h2 {
        font-size: 32px;
    }

    .hero {
        height: 500px;
    }

    .hero h2 {
        font-size: 36px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .business-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .footer-main {
        padding: 48px 0 24px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }

    .footer-about {
        max-width: none;
    }

    .footer-col h4 {
        font-size: 18px;
    }

    .footer-links a {
        font-size: 14px;
    }
}

/* 平板 (768px以下) */
@media (max-width: 768px) {
    body {
        padding-top: 74px;
    }

    .navbar-container {
        padding: 10px 16px;
        justify-content: center;
        position: relative;
    }

    .logo {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        margin: 0 auto;
    }

    .logo-img {
        width: 40px;
        height: 40px;
        margin-bottom: 4px;
    }

    .logo h1 {
        font-size: 14px;
        line-height: 18px;
    }

    .mobile-menu-btn {
        position: absolute;
        right: 16px;
        top: 50%;
        transform: translateY(-50%);
        padding: 8px;
        font-size: 20px;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        width: 100%;
        height: calc(100vh - 64px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 20px;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
        z-index: 100;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-links a {
        font-size: 16px;
        padding: 12px 20px;
        width: 100%;
        text-align: center;
        margin: 4px 0;
        border-radius: 0;
    }

    .nav-links a::after {
        display: none;
    }

    .nav-links a:hover {
        background: rgba(37, 99, 235, 0.05);
    }

    .section-title {
        margin-bottom: 32px;
    }

    .section-title h2 {
        font-size: 28px;
    }

    .hero {
        height: 400px;
    }

    .hero h2 {
        font-size: 32px;
    }

    .hero p {
        font-size: 16px;
    }

    .hero-btn {
        padding: 12px 32px;
        font-size: 16px;
    }

    .business-grid {
        grid-template-columns: 1fr;
    }

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

    .contact-form {
        padding: 24px;
    }

    .contact-item {
        padding: 24px;
    }

    .contact-icon {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }

    .footer-main {
        padding: 40px 0 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-col {
        text-align: center;
        align-items: center;
    }

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

    .footer-desc {
        text-align: center;
    }

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

    .footer-col h4 {
        font-size: 18px;
        margin-bottom: 12px;
    }

    .footer-col h4::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-links {
        align-items: center;
    }

    .footer-links a {
        justify-content: center;
    }

    .footer-links a::before {
        display: none;
    }

    .footer-links a:hover {
        padding-left: 0;
        transform: translateY(-2px);
    }

    .footer-contact .contact-item {
        padding: 10px 14px;
        max-width: 280px;
        margin: 0 auto;
    }

    .footer-contact .contact-item i {
        font-size: 15px;
    }

    .footer-contact .contact-item span {
        font-size: 13px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }

    .footer-icp {
        justify-content: center;
    }
    
    .footer-icp a {
        font-size: 12px;
    }
    
    .footer-icp .icp-icon,
    .footer-icp .gongan-icon {
        height: 14px;
    }
}

/* 手机 (480px以下) */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .navbar-container {
        padding: 8px 12px;
    }

    .logo-img {
        width: 36px;
        height: 36px;
    }

    .logo h1 {
        font-size: 12px;
    }

    .mobile-menu-btn {
        right: 12px;
        font-size: 18px;
    }

    .section {
        padding: 40px 0;
    }

    .hero {
        height: 300px;
    }

    .hero h2 {
        font-size: 24px;
        margin-bottom: 16px;
    }

    .hero p {
        font-size: 14px;
        margin-bottom: 24px;
    }

    .section-title {
        margin-bottom: 24px;
    }

    .section-title h2 {
        font-size: 20px;
    }

    .section-title .divider {
        width: 48px;
        height: 3px;
    }

    .about-content h3 {
        font-size: 18px;
        margin-bottom: 12px;
    }

    .about-content p {
        font-size: 14px;
        line-height: 1.6;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-top: 24px;
    }

    .stat-card {
        padding: 20px;
    }

    .stat-card .number {
        font-size: 28px;
    }

    .business-grid {
        gap: 16px;
        margin-top: 24px;
    }

    .business-card {
        padding: 20px;
    }

    .business-icon {
        width: 48px;
        height: 48px;
        margin-bottom: 16px;
    }

    .business-icon i {
        font-size: 20px;
    }

    .business-card h3 {
        font-size: 18px;
        margin-bottom: 12px;
    }

    .business-card p {
        font-size: 14px;
        margin-bottom: 16px;
    }

    .business-features {
        margin-top: 16px;
        padding-top: 16px;
    }

    .business-features li {
        font-size: 14px;
        margin-bottom: 8px;
    }

    .contact-grid {
        gap: 16px;
        margin-top: 24px;
    }

    .contact-item {
        padding: 20px;
        gap: 16px;
    }

    .contact-icon {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .contact-item h4 {
        font-size: 16px;
        margin-bottom: 6px;
    }

    .contact-item p {
        font-size: 14px;
    }

    .contact-item .text-sm {
        font-size: 12px;
    }

    .contact-form {
        padding: 20px;
    }

    .contact-form h3 {
        font-size: 20px;
        margin-bottom: 12px;
    }

    .form-group {
        margin-bottom: 16px;
    }

    .form-group label {
        font-size: 14px;
        margin-bottom: 6px;
    }

    .form-control {
        padding: 12px;
        font-size: 14px;
        border-radius: 8px;
    }

    .btn {
        padding: 12px 24px;
        font-size: 14px;
        border-radius: 8px;
    }

    .footer-main {
        padding: 32px 0 16px;
    }

    .footer-grid {
        gap: 24px;
    }

    .footer-logo .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 16px;
    }

    .footer-logo h3 {
        font-size: 16px;
    }

    .footer-desc {
        font-size: 14px;
    }

    .social-link {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }

    .footer-col h4 {
        font-size: 16px;
        margin-bottom: 10px;
        padding-bottom: 8px;
    }

    .footer-links {
        gap: 8px;
    }

    .footer-links a {
        font-size: 14px;
    }

    .footer-contact {
        gap: 8px;
    }

    .footer-contact .contact-item {
        padding: 8px 12px;
        gap: 10px;
    }

    .footer-contact .contact-item i {
        font-size: 14px;
        width: 18px;
    }

    .footer-contact .contact-item span {
        font-size: 12px;
    }

    .footer-bottom {
        padding: 16px 0;
    }

    .footer-copyright {
        font-size: 12px;
    }

    .footer-icp {
        gap: 12px;
    }
    
    .footer-icp a {
        font-size: 11px;
    }
    
    .footer-icp .icp-icon,
    .footer-icp .gongan-icon {
        height: 12px;
    }

    .hero-btn {
        padding: 10px 24px;
        font-size: 14px;
    }
}