/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #f0f0f0;
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.nav-logo h2 {
    color: #2563eb;
    font-weight: 600;
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #666;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #2563eb;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2563eb;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Hero区域样式 */
.hero {
    padding: 120px 0 80px;
    text-align: center;
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #64748b;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: #2563eb;
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);

    
}

.btn-secondary {
    background: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.btn-secondary:hover {
    background: #2563eb;
    color: white;
    transform: translateY(-2px);
}

/* 产品区域样式 */
.products {
    padding: 80px 0;
    background: #ffffff;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.product-card {
    background: #ffffff;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    overflow: hidden;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: #2563eb;
}

/* 产品图片区域 */
.product-image {
    position: relative;
    height: 250px;
    background: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover .product-img {
    transform: scale(1.05);
}

.image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    text-align: center;
}

.image-placeholder svg {
    margin-bottom: 1rem;
    opacity: 0.5;
}

.image-placeholder p {
    font-size: 0.875rem;
    color: #64748b;
}

/* 产品内容区域 */
.product-content {
    padding: 2.5rem;
    text-align: center;
}

.product-icon {
    color: #2563eb;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.product-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.product-content p {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.product-features {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.feature-tag {
    background: #f1f5f9;
    color: #475569;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* 关于我们区域样式 */
.about {
    padding: 80px 0;
    background: #f8fafc;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1.5rem;
}

.about-text p {
    font-size: 1.125rem;
    color: #64748b;
    margin-bottom: 3rem;
    line-height: 1.7;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

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

.stat-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #64748b;
    font-size: 0.875rem;
}

/* 联系我们区域样式 */
.contact {
    padding: 80px 0;
    background: #ffffff;
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content h2 {
    font-size: 2.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.contact-content p {
    font-size: 1.125rem;
    color: #64748b;
    margin-bottom: 3rem;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8fafc;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: #f1f5f9;
    transform: translateY(-2px);
}

.contact-icon {
    color: #2563eb;
    flex-shrink: 0;
}

.contact-item h4 {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: #64748b;
    margin: 0;
}

/* 页脚样式 */
.footer {
    background: #1e293b;
    color: #94a3b8;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-logo h3 {
    color: #ffffff;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.footer-logo p {
    color: #94a3b8;
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #ffffff;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #334155;
}

.footer-bottom p {
    color: #64748b;
    font-size: 0.875rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .product-content {
        padding: 2rem;
    }
    
    .product-image {
        height: 200px;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .product-content {
        padding: 1.5rem;
    }
    
    .product-image {
        height: 180px;
    }
}