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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header .logo {
    font-size: 28px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 15px;
}

nav {
    text-align: center;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
}

nav ul li {
    display: inline;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 16px;
    padding: 10px 20px;
    border-radius: 25px;
    transition: all 0.3s ease;
}

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

.hero {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    padding: 60px 0;
    text-align: center;
    color: white;
}

.hero h1 {
    font-size: 36px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
}

.hero .download-btn {
    display: inline-block;
    background-color: #ff6b6b;
    color: white;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 30px;
    font-size: 18px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.hero .download-btn:hover {
    background-color: #ee5a5a;
    transform: translateY(-2px);
}

section {
    padding: 50px 0;
}

.section-title {
    text-align: center;
    font-size: 28px;
    margin-bottom: 40px;
    color: #333;
}

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

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

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

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

.product-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

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

.news-list {
    max-width: 800px;
    margin: 0 auto;
}

.news-item {
    background: white;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

.news-item:hover {
    box-shadow: 0 5px 15px rgba(0,0,0,0.12);
}

.news-item h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

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

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

.news-meta {
    color: #999;
    font-size: 14px;
    margin-bottom: 15px;
}

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

.about-section {
    background: white;
}

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

.contact-section .section-title {
    color: white;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    text-align: center;
}

.contact-item {
    padding: 30px;
}

.contact-item .icon {
    font-size: 36px;
    margin-bottom: 15px;
}

.contact-item h4 {
    font-size: 18px;
    margin-bottom: 10px;
}

.contact-item p {
    color: rgba(255,255,255,0.8);
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 30px 0;
}

footer p {
    color: #999;
}

@media (max-width: 768px) {
    header .logo {
        font-size: 22px;
    }
    
    nav ul {
        gap: 15px;
    }
    
    nav ul li a {
        padding: 8px 15px;
        font-size: 14px;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 24px;
    }
}