:
root { --primary-color: #6366f1; --bg-color: #f8fafc; --text-
color: #1e293b; --accent-color: #ec4899; }
        *
 { box-sizing: border-box; margin: 0; padding: 0; }
        body {
 font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; background: var(--bg-color);
 color: var(--text-color); line-height: 1.6; }
        .container { max
-width: 1200px; margin: 0 auto; padding: 0 20px; }

        header { background: #fff; padding: 15px 0; border-bottom: 1
px solid #e2e8f0; position: sticky; top: 0; z-index: 10
00; }
        nav { display: flex; justify-content: space-between; align-items: center; }
        
.nav-links { display: flex; align-items: center; gap: 0; }
        .nav-links a
 { padding: 0 15px; color: var(--text-color); text-decoration: none; font-weight:
 500; }
        .btn { padding: 10px 25px; border-
radius: 8px; cursor: pointer; transition: 0.3s; font-weight: 6
00; text-decoration: none; }
        .btn-primary { background: var(--primary-color
); color: white; }
        .hero { padding: 80px 0; text-align: center; background
: linear-gradient(135deg, #eef2ff 0%, #fff 100%); }

        h1 { font-size: 3rem; margin-bottom: 20px; color: #0f172
a; }
        .section { padding: 60px 0; }
        .grid-3 { display: grid
; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 
20px; }
        .card { background: #fff; padding: 30px; border-radius: 16
px; box-shadow: 0 4px 6px rgba(0,0,0,0.
05); transition: 0.3s; }
        .card:hover { transform: translateY(-5px); }

        .faq-item { margin-bottom: 15px; border: 1px solid #e
2e8f0; border-radius: 8px; }
        .faq-q { padding: 15
px; cursor: pointer; font-weight: bold; background: #f1f5f9; }
        
.faq-a { padding: 15px; display: none; }
        footer { background: #
1e293b; color: #cbd5e1; padding: 40px 0; text
-align: center; }
        .nav-links { gap: 0; }