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

body {
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

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

ul {
    list-style: none;
}

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

.header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: #00d4ff;
    text-shadow: 0 0 10px rgba(0,212,255,0.5);
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    color: #fff;
    font-size: 16px;
    transition: all 0.3s;
    padding: 8px 15px;
    border-radius: 4px;
}

.nav a:hover {
    color: #00d4ff;
    background: rgba(0,212,255,0.1);
}

.header-actions {
    display: flex;
    gap: 15px;
}

.btn {
    display: inline-block;
    padding: 10px 25px;
    border-radius: 5px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    color: #fff;
    box-shadow: 0 4px 15px rgba(0,212,255,0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,212,255,0.6);
}

.btn-secondary {
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
    color: #fff;
    box-shadow: 0 4px 15px rgba(243,156,18,0.4);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(243,156,18,0.6);
}

.banner {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 80%, #e94560 100%);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.banner::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="40" fill="none" stroke="rgba(0,212,255,0.1)" stroke-width="0.5"/></svg>') repeat;
    opacity: 0.5;
}

.banner h1 {
    font-size: 48px;
    color: #fff;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.banner p {
    font-size: 20px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}

.banner-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    position: relative;
    z-index: 1;
}

.features {
    padding: 60px 0;
    background: #fff;
}

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

.feature-card {
    padding: 30px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid #dee2e6;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
}

.feature-card h3 {
    font-size: 22px;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.section-title p {
    font-size: 18px;
    color: #666;
}

.products {
    padding: 60px 0;
    background: #f5f7fa;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.product-image {
    height: 200px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #00d4ff;
    font-size: 60px;
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    font-size: 20px;
    color: #1a1a2e;
    margin-bottom: 10px;
}

.product-info p {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.product-price {
    font-size: 24px;
    color: #e94560;
    font-weight: bold;
    margin-bottom: 15px;
}

.news {
    padding: 60px 0;
    background: #fff;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background: #f8f9fa;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.news-image {
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 50px;
}

.news-content {
    padding: 25px;
}

.news-date {
    color: #999;
    font-size: 14px;
    margin-bottom: 10px;
}

.news-content h3 {
    font-size: 18px;
    color: #1a1a2e;
    margin-bottom: 10px;
    line-height: 1.5;
}

.news-content p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
}

.news-link {
    color: #00d4ff;
    font-weight: bold;
}

.about {
    padding: 80px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h2 {
    font-size: 36px;
    margin-bottom: 25px;
    color: #00d4ff;
}

.about-text p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: rgba(255,255,255,0.9);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
}

.stat-number {
    font-size: 42px;
    font-weight: bold;
    color: #00d4ff;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    color: rgba(255,255,255,0.8);
}

.contact {
    padding: 80px 0;
    background: #f5f7fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h3 {
    font-size: 28px;
    color: #1a1a2e;
    margin-bottom: 25px;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    font-size: 24px;
}

.contact-text {
    flex: 1;
}

.contact-text h4 {
    font-size: 16px;
    color: #1a1a2e;
    margin-bottom: 5px;
}

.contact-text p {
    color: #666;
}

.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.contact-form h3 {
    font-size: 24px;
    color: #1a1a2e;
    margin-bottom: 25px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    color: #1a1a2e;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    font-family: inherit;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00d4ff;
}

.footer {
    background: #1a1a2e;
    color: #fff;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h4 {
    font-size: 20px;
    color: #00d4ff;
    margin-bottom: 20px;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: rgba(255,255,255,0.8);
    transition: all 0.3s;
}

.footer-section ul li a:hover {
    color: #00d4ff;
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.6);
}

.breadcrumb {
    background: #f8f9fa;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

.breadcrumb-inner {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.breadcrumb a {
    color: #666;
}

.breadcrumb a:hover {
    color: #00d4ff;
}

.breadcrumb span {
    color: #999;
}

.breadcrumb .current {
    color: #1a1a2e;
}

.page-header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    padding: 60px 0;
    text-align: center;
    color: #fff;
}

.page-header h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 18px;
    color: rgba(255,255,255,0.8);
}

.page-content {
    padding: 60px 0;
    min-height: 500px;
}

.page-text {
    line-height: 2;
    color: #333;
}

.page-text h2 {
    font-size: 28px;
    color: #1a1a2e;
    margin: 40px 0 20px;
}

.page-text h3 {
    font-size: 22px;
    color: #1a1a2e;
    margin: 30px 0 15px;
}

.page-text p {
    margin-bottom: 20px;
    color: #555;
}

.page-text ul {
    margin: 20px 0;
    padding-left: 20px;
}

.page-text ul li {
    margin-bottom: 10px;
    list-style: disc;
    color: #555;
}

.news-detail {
    padding: 60px 0;
}

.news-detail-content {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.news-detail-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.news-detail-header h1 {
    font-size: 32px;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.news-meta {
    color: #999;
    font-size: 14px;
}

.news-detail-body {
    line-height: 2;
    color: #555;
}

.news-detail-body p {
    margin-bottom: 20px;
}

.news-detail-body h2 {
    font-size: 24px;
    color: #1a1a2e;
    margin: 30px 0 20px;
}

.back-link {
    display: inline-block;
    margin-top: 30px;
    color: #00d4ff;
    font-weight: bold;
}

.mobile-menu-btn {
    display: none;
    font-size: 28px;
    color: #fff;
    cursor: pointer;
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .header-actions {
        flex-direction: column;
        gap: 10px;
    }
    
    .banner h1 {
        font-size: 32px;
    }
    
    .banner p {
        font-size: 16px;
    }
    
    .banner-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .products-grid,
    .news-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
}