/* 响应式设计 */

/* 平板设备 */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .intro-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .service-item {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .service-item.reverse {
        direction: ltr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

/* 移动设备 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem 0;
        gap: 0;
    }

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

    .nav-link {
        display: block;
        padding: 1rem;
        margin: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .hero {
        padding-top: 100px;
    }

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

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

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .section-title {
        font-size: 1.75rem;
    }

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

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

    .stat-number {
        font-size: 1.75rem;
    }

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

    .timeline-item {
        flex-direction: column;
        gap: 0.5rem;
    }

    .process-steps {
        flex-direction: column;
    }

    .process-step {
        min-width: auto;
    }

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

    .page-header {
        padding: 6rem 0 3rem;
    }

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

/* 小屏幕移动设备 */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

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

    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .feature-icon {
        font-size: 2rem;
    }

    .stat-item {
        padding: 1rem;
    }

    .timeline-item {
        padding-left: 1rem;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 0.625rem;
    }
}

/* 打印样式 */
@media print {
    .header,
    .footer,
    .hero-buttons,
    .hamburger {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: 2rem 0;
        background: white;
        color: black;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    a {
        text-decoration: none;
        color: black;
    }

    .page-break {
        page-break-before: always;
    }
}