:root { --primary: #2563eb; --dark
: #1e293b; --light: #f8fafc; --accent: #f59
e0b; }
        * { 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: #fff; border-bottom: 1px solid #e2e8f0; position: sticky;
 top: 0; z-index: 1000; }
        .nav-wrapper { display: flex
; align-items: center; justify-content: space-between; height: 70px; }

        .nav-links { display: flex; align-items: center; gap: 0; }
        .nav-links a
 { padding: 0 15px; text-decoration: none; color: var(--dark); font-weight
: 500; font-size: 14px; }
        .btn { padding: 10px 
20px; border-radius: 6px; cursor: pointer; transition: 0.3s;
 display: inline-block; text-decoration: none; font-weight: 600; }
        .
btn-primary { background: var(--primary); color: #fff; }
        .hero { padding: 80px 
0; text-align: center; background: linear-gradient(135deg, #eff6ff 0%, #
fff 100%); }
        h1 { font-size: 3rem; color: var(--dark
); margin-bottom: 20px; }
        .section-title { text-align: center;
 margin-bottom: 40px; font-size: 2rem; }
        .grid { display
: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr
)); gap: 20px; margin-top: 30px; }
        .card { padding
: 30px; border: 1px solid #e2e8f0; border-radius: 12
px; transition: 0.3s; background: #fff; }
        .card:hover { transform
: translateY(-5px); box-shadow: 0 10px 25px rgba(0,0,0,
0.1); }
        .faq-item { margin-bottom: 15px; border-bottom
: 1px solid #e2e8f0; }
        .faq-q { padding: 1
5px 0; cursor: pointer; font-weight: 600; display: flex; justify-
content: space-between; }
        .faq-a { padding: 10px 0 20px; display:
 none; color: #64748b; }
        footer { background: var(--dark); color
: #cbd5e1; padding: 40px 0; margin-top: 60px; }
        
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4
0px; }
        .footer-links a { display: block; color: #cbd5e1; text
-decoration: none; margin-bottom: 10px; }