* {
    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: #f8f9fa;
}

#targetDiv {
    width: 100%;
    min-height: 100vh;
    background: #fff;
}

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

header {
    background: linear-gradient(135deg, #2d8cf0 0%, #1890ff 100%);
    color: #fff;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    font-size: 28px;
    font-weight: bold;
    letter-spacing: 2px;
}

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

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

.nav-links a:hover {
    opacity: 0.8;
}

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

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.downlbtnvmmn {
    display: inline-block;
    background: #fff;
    color: #667eea;
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 18px;
    font-weight: bold;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.downlbtnvmmn: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: 50px;
    color: #333;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin: 20px auto 0;
    border-radius: 2px;
}

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

.feature-card {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s;
    text-align: center;
}

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

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
    color: #667eea;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #333;
}

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

.platform-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.platform-item {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s;
}

.platform-item:hover {
    transform: scale(1.05);
}

.platform-item h4 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.platform-item p {
    color: #666;
    margin-bottom: 15px;
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item h3 {
    font-size: 48px;
    margin-bottom: 10px;
}

.stat-item p {
    font-size: 18px;
    opacity: 0.9;
}

.testimonials {
    background: #f8f9fa;
}

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

.testimonial-card {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.testimonial-card p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    font-weight: bold;
    color: #333;
}

.testimonial-role {
    color: #999;
    font-size: 14px;
}

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

.pricing-card {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    text-align: center;
    transition: transform 0.3s;
}

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

.pricing-card.featured {
    border: 3px solid #667eea;
    transform: scale(1.05);
}

.pricing-card h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

.pricing-price {
    font-size: 48px;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 20px;
}

.pricing-price span {
    font-size: 18px;
    color: #666;
}

.pricing-features {
    list-style: none;
    margin-bottom: 30px;
    text-align: left;
}

.pricing-features li {
    padding: 10px 0;
    color: #666;
    border-bottom: 1px solid #eee;
}

.pricing-features li::before {
    content: '✓';
    color: #667eea;
    margin-right: 10px;
    font-weight: bold;
}

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

.contact-section h2 {
    margin-bottom: 30px;
}

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

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

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

.footer-links a:hover {
    opacity: 0.8;
}

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .pricing-card.featured {
        transform: none;
    }
}