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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

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

.logo span {
    color: #ffd700;
}

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

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 8px 15px;
    border-radius: 20px;
}

nav ul li a:hover {
    background-color: rgba(255,255,255,0.2);
}

.banner {
    margin-top: 80px;
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    padding: 100px 0;
    text-align: center;
    color: #fff;
}

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

.banner p {
    font-size: 20px;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    background-color: #fff;
    color: #667eea;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    font-size: 18px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.section {
    padding: 80px 0;
}

.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: #fff;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

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

.product-card .icon {
    font-size: 48px;
    margin-bottom: 20px;
}

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

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

.news-section {
    background-color: #fff;
}

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

.news-card {
    background: #f8f9fa;
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px 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: 36px;
}

.news-content {
    padding: 25px;
}

.news-content h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
    line-height: 1.4;
}

.news-content p {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
    line-height: 1.6;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    color: #999;
    font-size: 13px;
}

.about-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.about-section .section-title {
    color: #fff;
}

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

.about-content h3 {
    font-size: 28px;
    margin-bottom: 20px;
}

.about-content p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.contact-section {
    background-color: #fff;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: #f8f9fa;
    padding: 40px;
    border-radius: 15px;
}

.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: none;
}

.contact-info {
    text-align: center;
    margin-top: 40px;
}

.contact-info p {
    margin-bottom: 10px;
    color: #666;
}

footer {
    background-color: #333;
    color: #fff;
    padding: 50px 0;
    text-align: center;
}

.footer-links {
    margin-bottom: 20px;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
    margin: 0 15px;
    font-size: 14px;
}

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

footer p {
    color: #999;
    font-size: 14px;
}

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

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    nav ul {
        gap: 15px;
    }
    
    .banner h1 {
        font-size: 32px;
    }
    
    .banner p {
        font-size: 16px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
}