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

body {
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    line-height: 1.8;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

header {
    background: linear-gradient(90deg, #1a1a2e 0%, #16213e 100%);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
    padding: 8px 16px;
    border-radius: 20px;
}

.nav-links a:hover {
    background: rgba(255,255,255,0.1);
    color: #ffd700;
}

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

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: #fff;
    text-decoration: none;
    border-radius: 30px;
    font-size: 18px;
    transition: transform 0.3s, box-shadow 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.section {
    padding: 80px 0;
    background: #fff;
    margin: 30px 0;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #1a1a2e;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    margin: 15px auto 0;
    border-radius: 2px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    padding: 0 40px;
}

.feature-card {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #1a1a2e;
}

.feature-card p {
    color: #666;
    font-size: 16px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    padding: 0 40px;
}

.product-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.product-card:hover {
    transform: scale(1.02);
}

.product-img {
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
}

.product-info {
    padding: 30px;
}

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

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

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    padding: 0 40px;
}

.news-card {
    background: #fff;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.12);
}

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

.news-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #1a1a2e;
    line-height: 1.5;
}

.news-card p {
    color: #666;
    font-size: 15px;
}

.read-more {
    display: inline-block;
    margin-top: 15px;
    color: #667eea;
    text-decoration: none;
    font-weight: bold;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    padding: 0 40px;
    align-items: center;
}

.about-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #1a1a2e;
}

.about-text p {
    color: #666;
    margin-bottom: 15px;
    font-size: 16px;
}

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

.stat-item {
    text-align: center;
    padding: 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    color: #fff;
}

.stat-number {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    opacity: 0.9;
}

.contact-section {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    padding: 0 40px;
}

.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 25px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding: 20px;
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.contact-icon {
    font-size: 40px;
}

.contact-item h4 {
    font-size: 18px;
    color: #1a1a2e;
    margin-bottom: 5px;
}

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

footer {
    background: linear-gradient(90deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    padding: 60px 0 30px;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #ffd700;
}

.footer-content {
    opacity: 0.8;
    font-size: 14px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.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;
    opacity: 0.9;
}

.breadcrumb {
    padding: 15px 0;
    background: #f5f7fa;
}

.breadcrumb .container {
    display: flex;
    gap: 10px;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #667eea;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.content-section {
    padding: 60px 0;
}

.two-column {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.sidebar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 30px;
    border-radius: 15px;
    color: #fff;
}

.sidebar h3 {
    font-size: 22px;
    margin-bottom: 20px;
}

.sidebar ul {
    list-style: none;
}

.sidebar li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

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

.sidebar a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s;
}

.sidebar a:hover {
    color: #ffd700;
}

.article-content {
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.article-content h2 {
    font-size: 28px;
    color: #1a1a2e;
    margin-bottom: 20px;
}

.article-content p {
    color: #555;
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.8;
}

.article-meta {
    color: #999;
    font-size: 14px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.highlight-box {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 30px;
    border-radius: 15px;
    margin: 30px 0;
}

.highlight-box h4 {
    font-size: 22px;
    margin-bottom: 15px;
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

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

.stats-item .number {
    font-size: 56px;
    font-weight: bold;
    background: linear-gradient(90deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stats-item .label {
    font-size: 18px;
    opacity: 0.9;
    margin-top: 10px;
}

.partners-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.partners-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
}

.partner-item {
    padding: 30px 50px;
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 24px;
    font-weight: bold;
    color: #1a1a2e;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero h1 {
        font-size: 32px;
    }

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

    .about-content, .contact-grid, .two-column {
        grid-template-columns: 1fr;
    }

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