:root { --primary: #ff3e3e; --secondary: #2563eb; --dark: #1e293b; --light: #f8fafc; }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', sans-serif; color: var(--dark); line-height: 1.6; background: #fff; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: #fff; padding: 15px 0; border-bottom: 1px solid #eee; position: sticky; top: 0; z-index: 1000; }
        nav { display: flex; align-items: center; justify-content: space-between; }
        .nav-links { display: flex; gap: 0; }
        .nav-links a { padding: 10px 15px; text-decoration: none; color: var(--dark); font-weight: 500; font-size: 14px; }
        .hero { padding: 80px 0; text-align: center; background: linear-gradient(135deg, #fff 0%, #f1f5f9 100%); }
        h1 { font-size: 3rem; margin-bottom: 20px; color: var(--primary); }
        .btn { display: inline-block; padding: 12px 30px; border-radius: 50px; text-decoration: none; color: #fff; background: var(--primary); transition: 0.3s; }
        .card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; padding: 60px 0; }
        .card { padding: 30px; border: 1px solid #eee; border-radius: 12px; transition: 0.3s; }
        .card:hover { box-shadow: 0 10px 25px rgba(0,0,0,0.1); transform: translateY(-5px); }
        .section-title { text-align: center; margin-bottom: 40px; }
        .table-wrap { overflow-x: auto; margin: 40px 0; }
        table { width: 100%; border-collapse: collapse; }
        th, td { padding: 15px; border: 1px solid #ddd; text-align: left; }
        .faq-item { border-bottom: 1px solid #eee; padding: 20px 0; }
        .form-group { margin-bottom: 15px; }
        input, select, textarea { width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 6px; }
        footer { background: var(--dark); color: #fff; padding: 40px 0; text-align: center; }
        .float-kefu { position: fixed; bottom: 30px; right: 30px; z-index: 999; }