:root { --
primary: #0066ff; --dark: #1a1a1a; --light: #f8
f9fa; --accent: #ff3e3e; }
        * { box-sizing: border-box; margin:
 0; padding: 0; }
        body { font-family: -apple-system, BlinkMacSystemFont
, "Segoe UI", Roboto, sans-serif; line-height: 1.6; color: #333; 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; border-bottom:
 1px solid #eee; }
        .nav-wrapper { display: flex; justify-content: space-between; align
-items: center; }
        .nav-links { display: flex; gap: 0; align-items: center; }

        .nav-links a { padding: 10px 15px; text-decoration: none; color
: #333; font-weight: 500; font-size: 14px; }
        
.btn { display: inline-block; padding: 10px 25px; background: var(--primary); color: #
fff; border-radius: 5px; text-decoration: none; transition: 0.3s; }
        .
hero { padding: 80px 0; text-align: center; background: linear-gradient(1
35deg, #f0f4ff 0%, #ffffff 100%); }
        h
1 { font-size: 2.5rem; color: var(--dark); margin-bottom: 20px;
 }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(3
00px, 1fr)); gap: 30px; margin-top: 40px;
 }
        .card { padding: 30px; border-radius: 12px; background:
 #fff; box-shadow: 0 4px 20px rgba(0,0,0,0.
05); transition: 0.3s; }
        .card:hover { transform: translateY(-5px); }

        .faq-item { margin-bottom: 15px; border-bottom: 1px solid #
eee; padding-bottom: 10px; }
        .faq-q { font-weight: 60
0; cursor: pointer; display: flex; justify-content: space-between; }
        footer { background
: var(--dark); color: #fff; padding: 50px 0; margin-top: 5
0px; }
        .footer-grid { display: grid; grid-template-columns: repeat(auto-fit
, minmax(200px, 1fr)); gap: 40px; }
        .
float-kefu { position: fixed; bottom: 30px; right: 30px; z
-index: 999; }