:root { --primary: #6366f1; --dark: #1e293b; --light: #f8fafc; --accent: #8b5cf6; }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'PingFang SC', sans-serif; color: var(--dark); line-height: 1.6; background: #ffffff; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: #fff; padding: 20px 0; border-bottom: 1px solid #eee; position: sticky; top: 0; z-index: 1000; }
        .nav-wrapper { display: flex; justify-content: space-between; align-items: center; }
        .nav-links { display: flex; gap: 0; align-items: center; }
        .nav-links a { padding: 0 15px; text-decoration: none; color: var(--dark); font-weight: 500; font-size: 14px; }
        .hero { padding: 100px 0; text-align: center; background: linear-gradient(135deg, #f0f7ff, #fff5f7); }
        h1 { font-size: 48px; margin-bottom: 20px; color: #0f172a; }
        .btn { display: inline-block; padding: 12px 30px; background: var(--primary); color: #fff; border-radius: 8px; text-decoration: none; font-weight: 600; transition: transform 0.3s; }
        .btn:hover { transform: translateY(-2px); }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; padding: 60px 0; }
        .card { padding: 30px; border-radius: 16px; background: #fff; border: 1px solid #e2e8f0; transition: 0.3s; }
        .card:hover { box-shadow: 0 10px 25px rgba(0,0,0,0.05); }
        table { width: 100%; border-collapse: collapse; margin: 20px 0; }
        th, td { border: 1px solid #e2e8f0; padding: 15px; text-align: left; }
        footer { background: #0f172a; color: #cbd5e1; padding: 60px 0 30px; }
        .faq-item { margin-bottom: 15px; }
        .faq-question { background: #f1f5f9; padding: 15px; border-radius: 8px; cursor: pointer; font-weight: 600; color: #334155; }
        .feedback-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
        .form-group { margin-bottom: 15px; }
        input, select, textarea { width: 100%; padding: 12px; border: 1px solid #cbd5e1; border-radius: 6px; }
        .floating-kefu { position: fixed; right: 20px; bottom: 50px; width: 80px; z-index: 999; }