:root
 { --primary: #0056b3; --accent: #007bff; --text: #3
33; --bg: #f8fbff; --card: #ffffff; }
        * { box-sizing
: border-box; margin: 0; padding: 0; }
        body { font-family: 'Segoe
 UI', Roboto, sans-serif; line-height: 1.6; color: var(--text); background: var(--
bg); }
        .container { max-width: 1200px; margin: 0 auto
; padding: 0 20px; }
        header { background: #fff; padding: 1
5px 0; border-bottom: 1px solid #e1e8ed; 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: #333; font-
weight: 500; }
        .btn-primary { background: var(--primary); color: #
fff; padding: 10px 20px; border-radius: 5px; text-decoration
: none; display: inline-block; }
        section { padding: 60px 0; }
        h
1, h2 { color: #002d5e; margin-bottom: 20px; }

        .grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px
, 1fr)); gap: 25px; }
        .card { background: var(--card); padding: 
30px; border-radius: 12px; box-shadow: 0 4px 1
5px rgba(0,0,0,0.05); transition: 0.3s; }

        .card:hover { transform: translateY(-5px); box-shadow: 0 8px 25
px rgba(0,0,0,0.1); }
        .hero { text-align: center; padding
: 100px 0; background: linear-gradient(135deg, #eef6
ff, #dbeaff); }
        .hero h1 { font-size: 2.5rem
; }
        .faq-item { margin-bottom: 15px; border-bottom: 1px solid #eee
; padding-bottom: 10px; }
        footer { background: #002d5e; color:
 #fff; padding: 40px 0; text-align: center; }
        footer a { color: #ccc
; text-decoration: none; margin: 0 10px; }
        .floating-kefu { position: fixed
; bottom: 30px; right: 30px; z-index: 999; }
        
.floating-kefu img { width: 80px; height: 80px; border-radius: 5
0%; box-shadow: 0 0 10px rgba(0,0,0,0.2); }

        .comparison-table { width: 100%; border-collapse: collapse; margin-top: 20px
; }
        .comparison-table th, .comparison-table td { border: 1px solid #ddd; padding: 1
2px; text-align: left; }