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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 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: #fff;
    padding: 15px 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: 24px;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo .emoji {
    font-size: 28px;
}

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: color 0.3s;
}

nav ul li a:hover {
    color: #ffd700;
}

.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 120px 0 100px;
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 20px;
    line-height: 1.4;
}

.hero h1 .emoji {
    font-size: 48px;
    margin-right: 10px;
}

.hero p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.features {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.feature {
    text-align: center;
    max-width: 200px;
}

.feature .emoji {
    font-size: 40px;
    display: block;
    margin-bottom: 15px;
}

.feature h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.feature p {
    font-size: 14px;
    opacity: 0.9;
}

.cta {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-primary {
    background: #ffd700;
    color: #333;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    font-size: 16px;
    transition: all 0.3s;
}

.btn-primary:hover {
    background: #ffed4a;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 215, 0, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    font-size: 16px;
    border: 2px solid #fff;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: #fff;
    color: #667eea;
}

section {
    padding: 80px 0;
}

section h2 {
    font-size: 32px;
    text-align: center;
    margin-bottom: 15px;
    color: #333;
}

section h2 .emoji {
    font-size: 36px;
    margin-right: 10px;
}

.section-desc {
    text-align: center;
    color: #666;
    font-size: 16px;
    margin-bottom: 50px;
}

.products {
    background: #fff;
}

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

.product-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid #e9ecef;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.product-card .emoji {
    font-size: 48px;
    display: block;
    margin-bottom: 20px;
}

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

.product-card p {
    color: #666;
    font-size: 14px;
    margin-bottom: 20px;
}

.product-card ul {
    list-style: none;
    text-align: left;
}

.product-card ul li {
    padding: 8px 0;
    font-size: 14px;
    color: #555;
    padding-left: 20px;
    position: relative;
}

.product-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.news {
    background: #f5f5f5;
}

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

.news-card {
    background: #fff;
    padding: 25px;
    border-radius: 15px;
    transition: all 0.3s;
    border: 1px solid #e9ecef;
}

.news-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

.news-date {
    font-size: 13px;
    color: #999;
    margin-bottom: 15px;
}

.news-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #333;
    line-height: 1.5;
}

.news-card h3 .emoji {
    font-size: 20px;
    margin-right: 8px;
}

.news-card p {
    color: #666;
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.read-more {
    color: #667eea;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s;
}

.read-more:hover {
    color: #764ba2;
}

.about {
    background: #fff;
}

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

.about-text h3 {
    font-size: 26px;
    margin-bottom: 20px;
    color: #333;
}

.about-text p {
    color: #666;
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 15px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat {
    text-align: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 25px;
    border-radius: 12px;
}

.stat .emoji {
    font-size: 32px;
    display: block;
    margin-bottom: 10px;
}

.stat-number {
    font-size: 28px;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 13px;
    color: #666;
}

.features-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #f8f9fa;
    padding: 15px 25px;
    border-radius: 25px;
    color: #333;
    font-size: 15px;
}

.feature-item .emoji {
    color: #28a745;
}

.contact {
    background: #f5f5f5;
}

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

.contact-item {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
}

.contact-item .emoji {
    font-size: 36px;
    display: block;
    margin-bottom: 15px;
}

.contact-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
}

.contact-item p {
    color: #666;
    font-size: 15px;
}

.download-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 50px;
    border-radius: 20px;
    text-align: center;
    color: #fff;
}

.download-section h3 {
    font-size: 28px;
    margin-bottom: 15px;
}

.download-section h3 .emoji {
    font-size: 32px;
    margin-right: 10px;
}

.download-section p {
    font-size: 16px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.download-btn {
    background: #fff;
    padding: 20px 40px;
    border-radius: 15px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: all 0.3s;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.download-btn .emoji {
    font-size: 40px;
}

.download-btn .btn-title {
    font-weight: bold;
    color: #333;
    font-size: 16px;
}

.download-btn .btn-subtitle {
    font-size: 13px;
    color: #666;
}

footer {
    background: #333;
    color: #fff;
    padding: 50px 0;
}

.footer-content {
    text-align: center;
}

.footer-brand {
    font-size: 24px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
}

.footer-brand .emoji {
    font-size: 28px;
}

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

.footer-links a {
    color: #fff;
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s;
}

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

.footer-copyright {
    font-size: 14px;
    opacity: 0.7;
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    nav ul {
        gap: 15px;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .features {
        gap: 20px;
    }
    
    .feature {
        max-width: 150px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .download-btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}