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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    line-height: 1.6;
    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: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: #667eea;
    text-decoration: none;
}

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

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

.nav-links a:hover {
    color: #667eea;
}

.hero {
    padding: 80px 0;
    text-align: center;
    color: white;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background: white;
    color: #667eea;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.section {
    padding: 80px 0;
    background: white;
}

.section:nth-child(even) {
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.section-title span {
    color: #667eea;
}

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

.product-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.product-card i {
    font-size: 48px;
    margin-bottom: 20px;
    color: #667eea;
}

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

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

.news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.news-item {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: box-shadow 0.3s ease;
}

.news-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.news-item h3 {
    margin-bottom: 10px;
    color: #333;
}

.news-item h3 a {
    text-decoration: none;
    color: #333;
    transition: color 0.3s ease;
}

.news-item h3 a:hover {
    color: #667eea;
}

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

.news-content {
    color: #666;
    line-height: 1.8;
}

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

.about-content p {
    margin-bottom: 20px;
    color: #666;
    font-size: 16px;
    line-height: 2;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

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

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

.contact-form button {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.contact-form button:hover {
    transform: translateY(-2px);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 50px;
    text-align: center;
}

.contact-info-item {
    padding: 20px;
}

.contact-info-item i {
    font-size: 32px;
    color: #667eea;
    margin-bottom: 10px;
}

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

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

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 40px 0;
}

footer p {
    margin-bottom: 10px;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .nav-links {
        gap: 15px;
    }

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

    .hero p {
        font-size: 16px;
    }

    .section-title {
        font-size: 28px;
    }
}