:root { --primary: #ff3e3e; --secondary: #25
63eb; --dark: #1e293b; --light: #f8fafc; --accent
: #ffd700; }
        * { margin: 0; padding: 0; box-
sizing: border-box; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei',
 sans-serif; color: #334155; line-height: 1.6; background-color: #ffffff
; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 
20px; }
        header { background: #fff; padding: 15px 0; border
-bottom: 1px solid #e2e8f0; position: sticky; top: 0;
 z-index: 1000; }
        nav { display: flex; justify-content: space-between; align
-items: center; }
        .nav-links { display: flex; gap: 0; list-style: none; }

        .nav-links a { padding: 10px 15px; text-decoration: none
; color: var(--dark); font-weight: 500; font-size: 14px; }
        
.btn { padding: 10px 25px; border-radius: 5px; cursor:
 pointer; transition: 0.3s; text-decoration: none; display: inline-block; }
        .btn
-primary { background: var(--primary); color: #fff; }
        .hero { padding: 8
0px 0; text-align: center; background: linear-gradient(135deg, #fff
5f5 0%, #f0f9ff 100%); }
        h1 { font-size: 3
rem; margin-bottom: 20px; color: var(--dark); }
        .grid { display: grid; grid
-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 3
0px; margin: 50px 0; }
        .card { padding: 30px;
 border: 1px solid #e2e8f0; border-radius: 12px; transition: 
0.3s; background: #fff; }
        .card:hover { transform: translateY(-5px); box-
shadow: 0 10px 25px rgba(0,0,0,0.1); }
        .comparison
-table { width: 100%; border-collapse: collapse; margin: 30px 0; }
        .
comparison-table th, .comparison-table td { padding: 15px; border: 1px solid #e2
e8f0; text-align: center; }
        footer { background: var(--dark); color: #cbd
5e1; padding: 50px 0; text-align: center; }
        .faq-item {
 margin-bottom: 15px; border-bottom: 1px solid #334155; padding-
bottom: 10px; }