:root { --primary-blue: #0056b3; --accent-blue: #007bff; --text-dark: #333; --bg-light: #f8fbff; }
        body { font-family: 'PingFang SC', sans-serif; color: var(--text-dark); margin: 0; line-height: 1.6; background-color: #fff; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: #fff; border-bottom: 1px solid #eee; position: sticky; top: 0; z-index: 1000; }
        .nav-wrapper { display: flex; align-items: center; justify-content: space-between; height: 70px; }
        .nav-links { display: flex; gap: 0; align-items: center; }
        .nav-links a { padding: 0 15px; text-decoration: none; color: var(--text-dark); font-weight: 500; }
        .hero { padding: 100px 20px; text-align: center; background: linear-gradient(135deg, #eef6ff 0%, #ffffff 100%); }
        h1 { font-size: 2.5rem; color: var(--primary-blue); margin-bottom: 20px; }
        .btn { display: inline-block; padding: 12px 30px; background: var(--primary-blue); color: #fff; border-radius: 5px; text-decoration: none; margin: 10px; transition: 0.3s; }
        .btn:hover { background: var(--accent-blue); transform: translateY(-2px); }
        .section { padding: 60px 0; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
        .card { padding: 30px; border-radius: 15px; background: #fff; border: 1px solid #eef; box-shadow: 0 5px 15px rgba(0,0,0,0.05); transition: 0.3s; }
        .card:hover { transform: translateY(-5px); }
        .footer { background: #1a2a3a; color: #fff; padding: 40px 0; text-align: center; }
        .faq-item { margin-bottom: 15px; border-bottom: 1px solid #eee; padding-bottom: 10px; }
        .table-wrap { overflow-x: auto; }
        table { width: 100%; border-collapse: collapse; margin-top: 20px; }
        th, td { padding: 15px; border: 1px solid #eee; text-align: left; }
        .floating-kefu { position: fixed; right: 20px; bottom: 50px; z-index: 999; }