:root { --primary: #6366f1; --dark: #1e293b; --light: #f8fafc; --accent: #8b5cf6; }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; line-height: 1.6; color: #334155; background: #fff; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: rgba(255,255,255,0.95); backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid #e2e8f0; }
        nav { display: flex; align-items: center; justify-content: space-between; height: 80px; }
        .nav-links { display: flex; gap: 0; align-items: center; }
        .nav-links a { text-decoration: none; color: #475569; padding: 0 15px; font-weight: 500; }
        .hero { padding: 100px 0; text-align: center; background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%); }
        .hero h1 { font-size: 3rem; margin-bottom: 20px; background: linear-gradient(to right, #4f46e5, #ec4899); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .btn { padding: 12px 30px; border-radius: 8px; font-weight: 600; display: inline-block; cursor: pointer; transition: 0.3s; text-decoration: none; }
        .btn-primary { background: var(--primary); color: #fff; }
        .section { padding: 80px 0; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
        .card { padding: 30px; border-radius: 16px; background: #fff; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1); border: 1px solid #f1f5f9; transition: transform 0.3s; }
        .card:hover { transform: translateY(-5px); }
        .faq-item { margin-bottom: 15px; border: 1px solid #e2e8f0; border-radius: 8px; overflow: hidden; }
        .faq-q { padding: 15px; background: #f1f5f9; cursor: pointer; font-weight: 600; }
        .faq-a { padding: 15px; display: none; }
        footer { background: var(--dark); color: #94a3b8; padding: 50px 0; text-align: center; }
        .social-qr { width: 150px; }