:
root { --primary: #0052ff; --dark: #1a1a1a; --light
: #f8f9fa; --text: #4a4a4a; }
        * { box-
sizing: border-box; margin: 0; padding: 0; }
        body { font-family: '
PingFang SC', 'Microsoft YaHei', sans-serif; line-height: 1.6; color: var
(--text); background: #fff; }
        .container { max-width: 1200px;
 margin: 0 auto; padding: 0 20px; }
        header { padding: 20px 
0; background: #fff; position: sticky; top: 0; z-index: 1000
; box-shadow: 0 2px 10px rgba(0,0,0,0.
05); }
        .nav-wrapper { display: flex; align-items: center; justify-content: space
-between; }
        .nav-links { display: flex; align-items: center; gap: 0; }

        .nav-links a { padding: 10px 15px; color: var(--dark); text-
decoration: none; font-weight: 500; font-size: 14px; }

        .hero { padding: 80px 0; text-align: center; background: linear-gradient(1
35deg, #f0f4ff 0%, #ffffff 100%); }
        .hero
 h1 { font-size: 3rem; margin-bottom: 20px; color: var(--
dark); }
        .btn { display: inline-block; padding: 12px 30px; border
-radius: 6px; text-decoration: none; font-weight: bold; transition: 0.
3s; }
        .btn-primary { background: var(--primary); color: #fff; }
        .
grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr
)); gap: 20px; margin-top: 40px; }
        .card { padding: 3
0px; border: 1px solid #eee; border-radius: 12px; transition: 0.3s;
 }
        .card:hover { transform: translateY(-5px); box-shadow: 0 10px 2
0px rgba(0,0,0,0.1); }
        footer { background: var(--dark); color
: #ccc; padding: 50px 0; margin-top: 60px; }
        
.faq-item { margin-bottom: 15px; border-bottom: 1px solid #333; padding-
bottom: 10px; }
        .faq-q { cursor: pointer; font-weight: bold
; color: #fff; }