:root { --
primary: #2563eb; --dark: #1e293b; --light: #f8faf
c; --accent: #8b5cf6; }
        * { box-sizing: border-box; margin: 
0; padding: 0; }
        body { font-family: -apple-system, BlinkMacSystemFont, "
Segoe UI", Roboto, sans-serif; color: #334155; line-height: 1.6;
 background-color: #ffffff; }
        .container { max-width: 1200px;
 margin: 0 auto; padding: 0 20px; }
        header { background: #fff
; border-bottom: 1px solid #e2e8f0; position: sticky; top: 0; z
-index: 1000; padding: 15px 0; }
        .nav-inner
 { display: flex; justify-content: space-between; align-items: center; }
        .nav-links { display
: flex; gap: 0; align-items: center; }
        .nav-links a { text
-decoration: none; color: #475569; padding: 8px 15px
; font-size: 14px; transition: color 0.3s; }
        .hero {
 padding: 80px 0; text-align: center; background: linear-gradient(135deg, #f
0f7ff 0%, #ffffff 100%); }
        h1 { font-size: 3rem
; color: #0f172a; margin-bottom: 20px; }
        .btn {
 display: inline-block; padding: 12px 30px; background: var(--primary); color: #
fff; border-radius: 8px; text-decoration: none; font-weight: 600; transition
: transform 0.2s; }
        .btn:hover { transform: translateY(-2px); }

        .section { padding: 60px 0; }
        .grid { display: grid; grid
-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 3
0px; margin-top: 30px; }
        .card { padding: 25px; border: 1
px solid #e2e8f0; border-radius: 12px; background: #fff; transition:
 box-shadow 0.3s; }
        .card:hover { box-shadow: 0 
10px 20px rgba(0,0,0,0.05); }
        table
 { width: 100%; border-collapse: collapse; margin-top: 20px; }

        th, td { border: 1px solid #e2e8f0; padding: 12px; text
-align: left; }
        .faq-item { margin-bottom: 15px; border-bottom
: 1px solid #e2e8f0; padding-bottom: 10px; }
        
footer { background: #0f172a; color: #94a3b8; padding: 4
0px 0; text-align: center; }
        .floating-kefu { position: fixed; bottom: 
30px; right: 30px; z-index: 999; }