:root { --primary: #2563eb; --dark: #1e
293b; --light: #f8fafc; --accent: #8b5cf6; }
        *
 { box-sizing: border-box; margin: 0; padding: 0; }
        body {
 font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; color: #3341
55; line-height: 1.6; background: #ffffff; }
        .container { max-width
: 1200px; margin: 0 auto; padding: 0 20px; }

        header { padding: 20px 0; border-bottom: 1px solid #e2e8
f0; position: sticky; top: 0; background: rgba(255,255,255
,0.95); z-index: 100; }
        .nav-wrapper { display
: flex; justify-content: space-between; align-items: center; }
        .nav-links { display
: flex; gap: 0; align-items: center; }
        .nav-links a { padding
: 10px 15px; text-decoration: none; color: #475569; font-weight
: 500; transition: color 0.3s; }
        .hero { padding: 8
0px 0; text-align: center; background: linear-gradient(135deg, #eff
6ff 0%, #fef2f2 100%); }
        .hero h1 { font-size
: 3rem; margin-bottom: 20px; color: #0f172a; }
        .
btn { display: inline-block; padding: 12px 30px; border-radius: 8
px; text-decoration: none; font-weight: 600; transition: transform 0.2
s; }
        .btn-primary { background: var(--primary); color: #fff; }
        
.section { padding: 60px 0; }
        .grid { display: grid; grid-template-columns
: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }

        .card { padding: 30px; border-radius: 16px; border: 
1px solid #e2e8f0; background: #fff; transition: box-shadow 0.
3s; }
        .card:hover { box-shadow: 0 20px 25px -5px rgba
(0,0,0,0.1); }
        .faq-item { margin-bottom: 1
5px; border: 1px solid #e2e8f0; border-radius: 8px; overflow: hidden;
 }
        .faq-q { padding: 15px; background: #f1f5f9
; cursor: pointer; font-weight: bold; }
        .faq-a { padding: 15px; display:
 none; }
        footer { background: var(--dark); color: #94a3b8; padding: 4
0px 0; text-align: center; }
        .float-kefu { position: fixed; right
: 20px; bottom: 20px; z-index: 99; }
    </
style>