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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft Sans Serif', sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 600;
    color: #1a73e8;
}

.logo-icon {
    margin-right: 10px;
    font-size: 28px;
    color: #1a73e8;
}

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

.nav-menu li {
    margin-left: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #1a73e8;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(26, 115, 232, 0.2) 0%, rgba(13, 71, 161, 0.2) 100%),
                url('images/bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    z-index: 1;
    padding: 100px 20px 20px;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p:first-of-type {
    font-size: 24px;
    margin-bottom: 15px;
    opacity: 0.9;
}

.hero-desc {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.85;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
    margin: 0 10px;
}

.btn-primary {
    background: white;
    color: #1a73e8;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 255, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #1a73e8;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    color: #333;
    margin-bottom: 20px;
}

.divider {
    width: 60px;
    height: 4px;
    background: #1a73e8;
    margin: 0 auto;
    border-radius: 2px;
}

.about {
    padding: 100px 0;
    background: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 28px;
    color: #333;
    margin-bottom: 20px;
}

.about-text p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 40px;
    font-weight: 700;
    color: #1a73e8;
}

.stat-label {
    font-size: 14px;
    color: #666;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 80px;
    box-shadow: 0 10px 40px rgba(26, 115, 232, 0.3);
}

.building-icon {
    font-size: 100px;
}

.services {
    padding: 100px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 32px;
}

.service-icon span {
    font-size: 32px;
    line-height: 1;
}

.icon-code {
    font-family: monospace;
    font-weight: bold;
    font-size: 28px;
}

.icon-cloud {
    font-size: 36px;
}

.icon-database {
    font-size: 36px;
}

.icon-shield {
    font-size: 36px;
    font-weight: bold;
}

.icon-mobile {
    font-size: 36px;
}

.icon-chart {
    font-size: 36px;
}

.service-card h3 {
    font-size: 22px;
    color: #333;
    margin-bottom: 15px;
}

.service-card p {
    color: #666;
    font-size: 14px;
    line-height: 1.7;
}

.contact {
    padding: 100px 0;
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-icon-small {
    color: #bdc3c7;
    margin-right: 10px;
}

.contact-item h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 5px;
}

.contact-item p {
    color: #666;
    font-size: 16px;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #1a73e8;
}

.contact-form textarea {
    resize: vertical;
}

.contact-form button {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 30px;
    background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%);
    color: white;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.contact-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(26, 115, 232, 0.4);
}

.footer {
    background: #2c3e50;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    margin-top: 15px;
    color: #bdc3c7;
    font-size: 14px;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 20px;
    font-size: 18px;
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-contact p {
    color: #bdc3c7;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-contact .contact-icon-small {
    color: #bdc3c7;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.footer-bottom .beian {
    flex: 1;
    text-align: center;
}

.footer-bottom p {
    color: #bdc3c7;
    font-size: 14px;
}

.footer-bottom a {
    color: #bdc3c7;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: white;
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 20px 0;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero p:first-of-type {
        font-size: 20px;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        justify-content: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}