*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Microsoft YaHei','PingFang SC',sans-serif;line-height:1.6;color:#333;background:#f8f9fa}
.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: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:24px;font-weight:bold;text-decoration:none;color:#fff}
.nav-links{display:flex;gap:25px;list-style:none}
.nav-links a{color:#fff;text-decoration:none;font-size:15px;transition:opacity 0.3s}
.nav-links a:hover{opacity:0.8}
.lang-switch{background:rgba(255,255,255,0.2);padding:6px 14px;border-radius:20px;color:#fff;text-decoration:none;font-size:14px}
.hero{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;padding:80px 0;text-align:center}
.hero h1{font-size:48px;margin-bottom:20px}
.hero p{font-size:20px;margin-bottom:30px;opacity:0.9}
.btn{display:inline-block;padding:14px 36px;background:#fff;color:#667eea;text-decoration:none;border-radius:30px;font-weight:bold;font-size:16px;transition:transform 0.3s,box-shadow 0.3s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 25px rgba(0,0,0,0.2)}
.btn-primary{background:#ff6b6b;color:#fff}
.features{padding:80px 0;background:#fff}
.section-title{text-align:center;font-size:36px;margin-bottom:50px;color:#333}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px}
.feature-card{background:#f8f9fa;padding:35px;border-radius:15px;text-align:center;transition:transform 0.3s,box-shadow 0.3s}
.feature-card:hover{transform:translateY(-5px);box-shadow:0 15px 35px rgba(0,0,0,0.1)}
.feature-icon{font-size:48px;margin-bottom:20px}
.feature-card h3{font-size:22px;margin-bottom:15px;color:#667eea}
.feature-card p{color:#666;line-height:1.8}
.products{padding:80px 0;background:#f8f9fa}
.product-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}
.product-card{background:#fff;border-radius:15px;overflow:hidden;box-shadow:0 5px 20px rgba(0,0,0,0.08);transition:transform 0.3s}
.product-card:hover{transform:translateY(-5px)}
.product-img{width:100%;height:200px;object-fit:cover}
.product-content{padding:25px}
.product-content h3{font-size:20px;margin-bottom:12px;color:#333}
.product-content p{color:#666;margin-bottom:18px;line-height:1.7}
.news{padding:80px 0;background:#fff}
.news-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:30px}
.news-card{background:#f8f9fa;border-radius:12px;overflow:hidden;transition:box-shadow 0.3s}
.news-card:hover{box-shadow:0 10px 30px rgba(0,0,0,0.1)}
.news-img{width:100%;height:180px;object-fit:cover}
.news-content{padding:22px}
.news-date{color:#999;font-size:13px;margin-bottom:10px}
.news-content h3{font-size:18px;margin-bottom:12px}
.news-content h3 a{color:#333;text-decoration:none}
.news-content h3 a:hover{color:#667eea}
.faq{padding:80px 0;background:#f8f9fa}
.faq-item{background:#fff;margin-bottom:15px;border-radius:10px;padding:25px;box-shadow:0 2px 10px rgba(0,0,0,0.05)}
.faq-item h3{color:#667eea;margin-bottom:12px;font-size:18px}
.faq-item p{color:#666;line-height:1.8}
.steps{margin-top:12px;padding-left:20px}
.steps li{margin-bottom:8px;color:#555;line-height:1.7}
.download-section{padding:80px 0;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;text-align:center}
.download-section h2{font-size:36px;margin-bottom:20px}
.download-section p{font-size:18px;margin-bottom:30px;opacity:0.9}
.download-btns{display:flex;justify-content:center;gap:20px;flex-wrap:wrap}
.download-btn{display:inline-block;padding:16px 40px;background:#fff;color:#667eea;text-decoration:none;border-radius:30px;font-weight:bold;font-size:16px;transition:transform 0.3s}
.download-btn:hover{transform:translateY(-2px);box-shadow:0 10px 25px rgba(0,0,0,0.2)}
footer{background:#2c3e50;color:#fff;padding:50px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{margin-bottom:18px;font-size:16px}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:#bbb;text-decoration:none;transition:color 0.3s}
.footer-col a:hover{color:#fff}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid #444;color:#999;font-size:14px}
.breadcrumb{background:#fff;padding:15px 0;border-bottom:1px solid #eee}
.breadcrumb a{color:#667eea;text-decoration:none}
.breadcrumb span{color:#999;margin:0 8px}
.article{padding:50px 0;background:#fff}
.article-header{margin-bottom:30px}
.article-header h1{font-size:32px;margin-bottom:15px;color:#333}
.article-meta{color:#999;font-size:14px;margin-bottom:20px}
.article-meta span{margin-right:20px}
.article-content{line-height:1.9;font-size:16px;color:#444}
.article-content p{margin-bottom:18px}
.article-content img{max-width:100%;height:auto;border-radius:8px;margin:20px 0}
.article-content h2{font-size:24px;margin:30px 0 15px;color:#333}
.article-content h3{font-size:20px;margin:25px 0 12px;color:#444}
.article-content ul,.article-content ol{margin:15px 0;padding-left:30px}
.article-content li{margin-bottom:10px}
.about{padding:80px 0;background:#fff}
.about-content{max-width:800px;margin:0 auto}
.about-content h2{font-size:28px;margin-bottom:20px;color:#667eea}
.about-content p{margin-bottom:18px;line-height:1.9;color:#555}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:30px;margin:40px 0;text-align:center}
.stat-item h3{font-size:36px;color:#667eea;margin-bottom:8px}
.stat-item p{color:#666}
@media(max-width:768px){.hero h1{font-size:32px}.hero p{font-size:16px}.section-title{font-size:28px}.nav-links{display:none}.feature-grid,.product-grid,.news-grid{grid-template-columns:1fr}}