:root {
    --primary-color: #1a365d;
    --secondary-color: #2b6cb0;
    --text-color: #2d3748;
    --background-color: #f7fafc;
    --border-color: #e2e8f0;
    --accent-color: #4299e1;
    --hover-color: #2c5282;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
    padding-top: 80px; /* 为固定头部留出空间 */
    scroll-behavior: smooth;
}

.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    padding: 1.2rem 1rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 10000;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    height: 50px;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.company-name {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.4rem;
    margin: 0;
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}
.app-box1 {
    float: left;
    width: 27%;
}
.app-box2 {
    float: left;
    width: 71%;
}

.app-box-big {
    display: flex;
}
.sys-1 {
    width: 100%;
}
.sys-2 {
    width: 100%;
}
.nav-menu a {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 600;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 6px;
}

.nav-menu a:hover {
    color: var(--accent-color);
    background-color: rgba(66, 153, 225, 0.08);
}

.nav-menu a:hover {
    color: var(--secondary-color);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.title {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }
    
    .header {
        padding: 1rem;
    }
    
    .header-container {
        padding: 0;
    }
    
    .company-name {
        font-size: 1.1rem;
    }
    
    .logo {
        height: 40px;
    }
    
    .section {
        padding: 2rem 1rem;
    }
    
    .section h2 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    .app-box1 {
        width: 100%;
    }
    .app-box2 {
        width: 100%;
    }
    
    .app-box-big {
        display: grid;
        gap: 1rem;
    }
    .about-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-top: 2rem;
        padding: 0;
    }
    
    .about-card {
        padding: 2rem 1.5rem;
    }

    .nav-container {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        transition: 0.3s;
    }

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

    .nav-menu {
        flex-direction: column;
        align-items: center;
        padding: 2rem 0;
    }

    .menu-toggle {
        display: block;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .logo {
        height: 40px;
    }

    .company-name {
        font-size: 1rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }

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

    .qualification-column {
        gap: 1rem;
    }

    .section {
        padding: 6rem 1rem;
    }

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

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 5px 0;
    transition: 0.3s;
}

.section {
    padding: 4rem 2rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    position: relative;
    background: var(--background-color);
    border-bottom: 1px solid var(--border-color);
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.section h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 3rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 1rem;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.hero-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 6rem 2rem;
    position: relative;
    overflow: hidden;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.05);
    opacity: 0.8;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    text-align: left;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.3;
    color: white;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
    font-weight: 300;
}

/* Hero区域亮点展示 */
.hero-highlights {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.5rem 0;
    transition: all 0.3s ease;
}

.highlight-item:hover {
    transform: translateX(5px);
}

.highlight-icon {
    font-size: 1.5rem;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.highlight-item:hover .highlight-icon {
    background: rgba(255, 255, 255, 0.2);
}

.highlight-item span:last-child {
    font-size: 1rem;
    font-weight: 400;
}

/* Hero视觉展示区域 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    height: 400px;
}

.hero-logo-container {
    position: relative;
    z-index: 2;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    width: 200px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.hero-logo-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.hero-logo {
    font-size: 3rem;
    color: white;
}

.decorative-circle {
    position: absolute;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    pointer-events: none;
}

.decorative-circle:nth-child(2) {
    width: 250px;
    height: 250px;
    top: 75px;
    left: 75px;
}

.decorative-circle:nth-child(3) {
    width: 300px;
    height: 300px;
    top: 50px;
    left: 50px;
    opacity: 0.5;
}

.decorative-circle:nth-child(4) {
    width: 350px;
    height: 350px;
    top: 25px;
    left: 25px;
    opacity: 0.3;
}

/* Hero响应式设计 */
@media (max-width: 768px) {
    .hero-section {
        min-height: auto;
        padding: 3rem 1rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-text {
        text-align: center;
        order: 2;
    }
    
    .hero-visual {
        order: 1;
        height: 250px;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-logo-container {
        width: 150px;
        height: 150px;
    }
    
    .hero-logo {
        font-size: 2.5rem;
    }
    
    .decorative-circle:nth-child(2) {
        width: 200px;
        height: 200px;
        top: 25px;
        left: 25px;
    }
    
    .decorative-circle:nth-child(3) {
        width: 230px;
        height: 230px;
        top: 10px;
        left: 10px;
    }
    
    .decorative-circle:nth-child(4) {
        width: 260px;
        height: 260px;
        top: -5px;
        left: -5px;
    }
    
    .hero-buttons {
        justify-content: center;
        gap: 0.8rem;
    }
    
    .hero-btn {
        padding: 0.7rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .hero-highlights {
        gap: 0.8rem;
        margin-bottom: 2rem;
    }
    
    .highlight-item:hover {
        transform: translateX(3px);
    }
}

/* Hero按钮样式 */
.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.hero-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.hero-btn.primary {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
}

.hero-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
}

.hero-btn.secondary {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
}

.hero-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    transform: translateY(-2px);
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    box-shadow: 0 4px 6px rgba(66, 153, 225, 0.2);
}

.cta-button:hover {
    background: var(--hover-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(66, 153, 225, 0.3);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 1rem;
}

/* 公司资质部分样式 */
.qualification-section {
    margin: 2rem 0;
    text-align: center;
}

.qualification-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    position: relative;
    display: inline-block;
}

.qualification-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.qualification-subtitle {
    font-size: 1.1rem;
    color: #6b7280;
    margin-bottom: 2rem;
    font-style: italic;
}

.qualification-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

.qualification-item {
    background: linear-gradient(145deg, #ffffff, #f8fafc);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.8);
    position: relative;
}

.qualification-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6, #06b6d4);
}

.qualification-image-wrapper {
    position: relative;
    overflow: hidden;
}

.qualification-img {
    width: 100%;
    height: 320px;
    object-fit: contain;
    display: block;
    background: #f8fafc;
    border-radius: 8px;
}

.qualification-info {
    padding: 2rem;
    text-align: center;
}

.qualification-info h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.8rem;
    line-height: 1.4;
}

.qualification-info p {
    color: #6b7280;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}



.about-card {
    background: linear-gradient(145deg, #ffffff, #f8fafc);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.about-card:hover::before {
    opacity: 1;
}

.about-card img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    transition: transform 0.3s ease;
}

.about-*ard:has(img) {
    padding: 1rem;
    background: linear-gradient(145deg, #ffffff, #f5f5f5);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.about-card:has(img):hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.about-card:has(img):hover img {
    transform: scale(1.02);
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}

.about-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
    transition: transform 0.3s ease;
}

.about-card:hover .about-icon {
    transform: scale(1.1);
}

.about-title {
    color: var(--primary-color);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    line-height: 1.4;
}

.about-description {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1.2rem;
    font-style: italic;
}

.about-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.about-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.about-features li {
    padding: 0.6rem 0;
    border-bottom: 1px solid #e2e8f0;
    position: relative;
    padding-left: 1.8rem;
    font-size: 0.9rem;
    color: #475569;
    transition: all 0.2s ease;
}

.about-features li:hover {
    color: var(--primary-color);
    padding-left: 2rem;
}

.about-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
    font-size: 1rem;
    top: 0.6rem;
}

.about-features li:last-child {
    border-bottom: none;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.advantage-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s;
}

.advantage-card:hover {
    transform: translateY(-5px);
}

.advantage-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem 0;
}

.product-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(20px);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.product-image {
    width: 140px;
    height: 140px;
    object-fit: contain;
    margin: 2.5rem auto;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

.product-card:hover .product-image {
    transform: scale(1.1);
}

.product-card h3 {
    padding: 1.5rem;
    margin: 0;
    color: var(--primary-color);
    font-size: 1.5rem;
    text-align: center;
    border-bottom: 2px solid var(--border-color);
}

.product-card p {
    padding: 1.5rem;
    color: #666;
    line-height: 1.6;
    flex-groe: 1;
    margin: 0;
}

.product-features {
    list-style: none;
    padding: 0 1.5rem;
    margin: 0 0 1.5rem;
}

.product-features li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: #555;
}

.product-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

.learn-more {
    display: inline-block;
    padding: 0. rem 1.5rem;
    background: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin: 1.5rem 1.5rem;
    text-align: center;
    transition: background-color 0.3s ease;
}

.learn-more:hover {
    background: #2980b9;
}
}

.learn-more {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    margin: 0 1.5rem 1.5rem;
    background: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s;
}

.learn-more:hover {
    background: var(--primary-color);
}

.case-carousel {
    margin-top: 3rem;
}

.case-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.case-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.case-content {
    pading: 2rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
    color: var(--text-color);
}

.contact-item {
    margin-bottom: 2rem;
}

.contact-form form {
    display: grid;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
}

.contact-form textarea {
    height: 150px;
    resize: vertical;
}

.submit-button {
    padding: 1rem 2rem;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

.submit-button:hover {
    background: var(--primary-color);
}

.footer {
    background: linear-gradient(135deg, var(--primary-color), #0f2027);
    color: white;
    padding: 4rem 1rem 2rem;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 2rem;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    width: 120px;
    height: 120px;
    margin-left: 40px;
}

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

.footer-column h4 {
    margin-bottom: 1rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.5rem;


    .footer-column a {
        color: white;
        text-decoration: none;
        transition: opacity 0.3s;
    }

    .footer-column a:hover {
        opacity: 0.8;
    }

    .footer-bottom {
        padding-top: 2rem;
        border-top: 1px 5olid rgba(255, 255, 255, 0.1);
        text-align: center;
    }

    @media (max-width: 768px) {
        .about-grid {
            grid-,
            2plate5columns: 1fr;
            padd5ng: 0 1re, ;
        }

        .header-cont iner {
            padding: 0 1rem;
        }

        .menu-to2gle {
            display: block;
        }

        .nav-contain5r5,
        position: fixed;
        top: 80px;
        left: 0;
        0.95);
        back;
        d background: rgba(255, 255, 255, 0.98);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        transform: translateY(-150%);
        opacity: 0;
        transition: transform 0.4s ease,
        opacity 0.3s ease;
        z-index: 999;
        padding: 1rem 0;
    }

    .nav-menu {
        display: flex;
        flex-direction: column;
        width: 100%;
        text-align: center;
        gap: 0;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-container.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-menu a {
        padding: 0.8rem 0;
        width: 100%;
        font-size: 1rem;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu a:last-child {
        border-bottom: none;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .logo {
        height: 32px;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

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

    .about-stats {
        grid-template-columns: 1fr;
    }

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

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

@media (min-width: 1200px) {
    .section {
        padding: 6rem 2rem;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        padding: 1.2rem;
        position: fixed;
        width: 100%;
        top: 0;
        z-index: 1000;
    }

    .header-container {
        max-width: 1200px;
        margin: 0 auto;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .logo {
        height: 50px;
    }

    .nav-menu {
        display: flex;
        list-style: none;
        gap: 2rem;
    }

    .nav-menu a {
        text-decoration: none;
        color: var(--primary-color);
        font-weight: 500;
        transition: color 0.3s;
    }

    .nav-menu a:hover {
        color: var(--secondary-color);
    }

    .menu-toggle {
        display: none;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0.5rem;
    }

    .menu-toggle span {
        display: block;
        width: 25px;
        height: 3px;
        background: var(--primary-color);
        margin: 5px 0;
        transition: 0.3s;
    }

    .section {
        padding: 8rem 2rem;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
        position: relative;
        background: var(--background-color);
    }

    @keyframes pulse {
        0% {
            transform: scale(1);
        }

        50% {
            transform: scale(1.05);
        }

        100% {
            transform: scale(1);
        }
    }

    .section-container {
        max-width: 1200px;
        margin: 0 auto;
        width: 100%;
    }

    .hero-section {
        background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        color: white;
        text-align: center;
        padding: 10rem 1rem 8rem;
        position: relative;
        overflow: hidden;
    }

    .hero-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><path fill="%23ffffff" fill-opacity="0.1" d="M0 0h200v200H0z"/></svg>');
        opacity: 0.1;
        animation: pulse 3s ease-in-out infinite;
    }

    .hero-content {
        /* max-width: 800px; */
        margin: 0 auto;
    }

    .hero-content h1 {
        font-size: 3rem;
        margin-bottom: 1.5rem;
    }

    .cta-button {
        display: inline-block;
        padding: 1rem 2rem;
        background: white;
        color: var(--primary-color);
        text-decoration: none;
        border-radius: 5px;
        font-weight: bold;
        transition: transform 0.3s;
    }

    .cta-button:hover {
        transform: translateY(-3px);
    }

    .about-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
        margin-top: 3rem;
        max-width: 1200px;
        margin-left: auto;
        margin-right: auto;
    }

    .qualification-card {
        padding: 2rem;
    }

    .qualification-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
        align-items: start;
    }

    .qualification-column {
        display: flex;
        flex-direction: column;
        gap: 2rem;
        justify-content: space-between;
        height: 100%;
    }

    .qualification-img {
        width: 100%;
        height: auto;
        border-radius: 8px;
        cursor: pointer;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .qualification-img:hover {
        transform: scale(1.02);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }

    .image-preview {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.9);
        z-index: 1000;
        cursor: pointer;
        padding: 2rem;
    }

    .image-preview img {
        max-width: 90%;
        max-height: 90%;
        margin: auto;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        border-radius: 8px;
        box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
    }

    .about-card {
        background: white;
        padding: 1.5rem;
        border-radius: 10px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        transition: all 0.3s ease;
        text-align: center;
    }

    .about-card img {
        width: 100%;
        height: auto;
        object-fit: contain;
        border-radius: 8px;
        transition: transform 0.3s ease;
    }

    .about-card:has(img) {
        padding: 1rem;
        background: linear-gradient(145deg, #ffffff, #f5f5f5);
        border: 1px solid rgba(0, 0, 0, 0.05);
    }

    .about-card:has(img):hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }

    .about-card:has(img):hover img {
        transform: scale(1.02);
    }

    .about-card:hover {
        transform: translateY(-5px);
    }

    .about-icon {
        font-size: 2.5rem;
        margin-bottom: 1rem;
        color: var(--secondary-color);
    }

    .about-features {
        list-style: none;
        padding: 0;
        margin: 1rem 0 0;
    }

    .about-features li {
        margin: 0.5rem 0;
        padding-left: 1.5rem;
        position: relative;
    }

    .about-features li::before {
        content: "✓";
        position: absolute;
        left: 0;
        color: var(--secondary-color);
    }

    .advantages-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2rem;
        margin-top: 3rem;
    }

    .advantage-card {
        background: white;
        padding: 2rem;
        border-radius: 10px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        text-align: center;
        transition: transform 0.3s;
    }

    .advantage-card:hover {
        transform: translateY(-5px);
    }

    .advantage-icon {
        font-size: 2.5rem;
        margin-bottom: 1rem;
    }

    .product-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 2rem;
        padding: 2rem 0;
    }

    .product-card {
        background: white;
        border-radius: 16px;
        overflow: hidden;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        display: flex;
        flex-direction: column;
        height: 100%;
        position: relative;
        border: 1px solid rgba(0, 0, 0, 0.05);
    }

    .product-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }

    .product-image {
        width: 120px;
        height: 120px;
        object-fit: contain;
        margin: 2rem auto;
        transition: transform 0.3s ease;
    }

    .product-card:hover .product-image {
        transform: scale(1.1);
    }

    .product-card h3 {
        padding: 1.5rem;
        margin: 0;
        color: var(--primary-color);
        font-size: 1.5rem;
        text-align: center;
        border-bottom: 2px solid var(--border-color);
    }

    .product-card p {
        padding: 1.5rem;
        color: #666;
        line-height: 1.6;
        flex-grow: 1;
        margin: 0;
    }

    .product-features {
        list-style: none;
        padding: 0 1.5rem;
        margin: 0 0 1.5rem;
    }

    .product-features li {
        position: relative;
        padding-left: 1.5rem;
        margin-bottom: 0.5rem;
        color: #555;
    }

    .product-features li::before {
        content: "✓";
        position: absolute;
        left: 0;
        color: var(--secondary-color);
        font-weight: bold;
    }

    .learn-more {
        display: inline-block;
        padding: 0.8rem 1.5rem;
        background: var(--secondary-color);
        color: white;
        text-decoration: none;
        border-radius: 5px;
        margin: 0 1.5rem 1.5rem;
        text-align: center;
        transition: background-color 0.3s ease;
    }

    .learn-more:hover {
        background: #2980b9;
    }
}

.learn-more {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    margin: 0 1.5rem 1.5rem;
    background: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s;
}

.learn-more:hover {
    background: var(--primary-color);
}

.case-carousel {
    margin-top: 3rem;
}

.case-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.case-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.case-content {
    padding: 2rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.contact-item {
    margin-bottom: 2rem;
}

.contact-form form {
    display: grid;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
}

.contact-form textarea {
    height: 150px;
    resize: vertical;
}

.submit-button {
    padding: 1rem 2rem;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

.submit-button:hover {
    background: var(--primary-color);
}

.footer {
    background: var(--primary-color);
    color: white;
    padding: 4rem 1rem 1rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 2rem;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    width: 120px;
    height: 120px;
}

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

.footer-column h4 {
    margin-bottom: 1rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.footer-column a:hover {
    opacity: 0.8;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    margin-top: 2rem;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }
    .section {
        padding: 1rem 2rem;
    }
    h2 {
        font-size: 1.2rem;
    }
    h3 {
        font-size: 1.1rem !important;
    }
    .company-name {
        font-size: 1.2rem;
    }
    .header-container {
        padding: 0 1rem;
    }

    .menu-toggle {
        display: block;
    }

    .nav-container {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.98);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        transform: translateY(-150%);
        opacity: 0;
        transition: transform 0.4s ease, opacity 0.3s ease;
        z-index: 999;
        padding: 1rem 0;
    }

    .nav-menu {
        display: flex;
        flex-direction: column;
        width: 100%;
        text-align: center;
        gap: 0;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-container.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-menu a {
        padding: 0.8rem 0;
        width: 100%;
        font-size: 1rem;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu a:last-child {
        border-bottom: none;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .logo {
        height: 32px;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

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

    .about-stats {
        grid-template-columns: 1fr;
    }
    .footer {
        padding: 0rem 1rem 1rem;
    }
    .footer-content {
        display: none;
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    /* 移动端政务互动屏样式 */
    .interactive-screens-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .screen-img {
        height: 200px;
    }

    .screen-caption {
        padding: 1rem;
        font-size: 0.9rem;
    }

    /* 移动端英雄区域样式 */
    .hero-overlay h3 {
        font-size: 1.8rem;
    }

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

    /* 移动端预警系统样式 */
    .warning-systems-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-top: 1.5rem;
    }
    
    .warning-system {
        margin: 0 auto;
        max-width: 100%;
    }

    .warning-img {
        height: 200px;
        object-fit: contain;
        background: #f8f9fa;
    }

    .warning-info {
        padding: 1.5rem 1rem;
    }
    
    .warning-info h4 {
        font-size: 1.1rem;
        margin-bottom: 0.5rem;
    }
    
    .warning-info p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .warning-description {
        padding: 1.5rem;
        margin: 1.5rem 0;
        border-radius: 8px;
    }
    
    .warning-description p {
        font-size: 1rem;
        line-height: 1.6;
    }

    /* 移动端公司资质样式 */
    .qualification-title {
        font-size: 1.8rem;
    }

    .qualification-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .qualification-container {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        padding: 0;
    }

    .qualification-img {
        height: 280px;
    }

    .qualification-info {
        padding: 1.8rem;
    }

    .qualification-info h4 {
        font-size: 1.1rem;
    }

    .view-text {
        font-size: 1rem;
        padding: 0.6rem 1.2rem;
    }
}

@media (min-width: 1200px) {
    .section {
        padding: 6rem 2rem;
    }
}

/* 加入我们部分样式 */
.join-us-section {
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    padding: 5rem 2rem;
    border-top: 1px solid var(--border-color);
    position: relative;
}

.join-us-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="%23e2e8f0" opacity="0.3"/></svg>') repeat;
    opacity: 0.5;
    pointer-events: none;
}

.contact-images {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.contact-item {
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}

.contact-item:hover::before {
    opacity: 1;
}

.contact-img {
    width: 200px;
    height: 200px;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

.contact-img:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.contact-item p {
    margin-top: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
}

/* 政务互动屏展示样式 */
.interactive-screens-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.screen-showcase {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.screen-showcase:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.15);
}

.screen-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
}

.screen-caption {
    padding: 1.5rem;
    text-align: center;
    font-weight: 600;
    color: var(--text-color);
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    border-top: 3px solid var(--primary-color);
}

/* 大数据分析英雄区域样式 */
.data-analysis-hero {
    position: relative;
    margin: 2rem 0;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

.hero-banner {
    width: 100%;
    height: auto;
    display: block;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.8), rgba(147, 51, 234, 0.6));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    padding: 2rem;
}

.hero-overlay h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-overlay p {
    font-size: 1.2rem;
    opacity: 0.95;
    max-width: 600px;
    line-height: 1.6;
}

/* 预警系统样式 */
.warning-description {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
    border-left: 4px solid #f59e0b;
}

.warning-description p {
    margin: 0;
    color: #92400e;
    font-size: 1.1rem;
    line-height: 1.7;
}

.warning-systems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.warning-system {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(239, 68, 68, 0.1);
}

.warning-system:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.2);
}

.warning-img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
}

.warning-info {
    padding: 2rem;
    text-align: center;
}

.warning-info h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.8rem;
}

.warning-info p {
    color: #6b7280;
    line-height: 1.6;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .contact-images {
        gap: 2rem;
    }
    
    .contact-img {
        width: 150px;
        height: 150px;
    }
    
    .join-us-section {
        padding: 3rem 1rem;
    }

}