:root { --primary
-color: #2ecc71; --text-color: #333; --bg-light: #f9
fdfa; --border-color: #e1e8e2; }
        * { box-sizing: border
-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC',
 'Microsoft YaHei', sans-serif; line-height: 1.6; color: var(--text-color);
 background: #fff; }
        .container { max-width: 1200px; margin: 0 auto;
 padding: 0 20px; }
        header { background: #fff; border-bottom: 
1px solid var(--border-color); padding: 15px 0; position: sticky; top: 0; z-
index: 1000; }
        .nav-wrapper { display: flex; align-items: center
; justify-content: space-between; }
        .nav-links { display: flex; gap: 
0; list-style: none; }
        .nav-links a { padding: 10px 
15px; text-decoration: none; color: var(--text-color); font-weight: 500;
 transition: color 0.3s; }
        .hero { padding: 80px 0; background
: var(--bg-light); text-align: center; }
        h1 { font-size: 2.5rem
; margin-bottom: 20px; color: #27ae60; }
        .btn {
 display: inline-block; padding: 12px 30px; background: var(--primary-color); color
: #fff; border-radius: 5px; text-decoration: none; margin-top: 2
0px; }
        section { padding: 60px 0; }
        .grid { display: grid
; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 3
0px; }
        .card { border: 1px solid var(--border-color); padding: 
30px; border-radius: 12px; transition: transform 0.3s; }
        .
card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,
0,0,0.05); }
        footer { background: #2c3e50; color: #ec
f0f1; padding: 40px 0; text-align: center; }
        .faq-item {
 margin-bottom: 15px; border-bottom: 1px solid #444; padding-
bottom: 10px; }