:root { --primary: #6366f1; --dark
: #1e293b; --light: #f8fafc; --accent: #a855
f7; }
        * { 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: #fff; }

        .container { max-width: 1200px; margin: 0 auto; padding:
 0 20px; }
        header { background: rgba(255,255,255
,0.95); backdrop-filter: blur(10px); position: sticky; top: 0; z
-index: 100; border-bottom: 1px solid #e2e8f0; padding
: 15px 0; }
        .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
: #475569; font-weight: 500; font-size: 1
4px; }
        .btn-primary { background: var(--primary); color: #fff; padding: 1
0px 24px; border-radius: 8px; text-decoration: none; transition: 0.3
s; }
        .hero { padding: 100px 0; text-align: center; background
: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%); }

        h1 { font-size: 3rem; margin-bottom: 20px; color: var(--
dark); }
        .grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(
250px, 1fr)); gap: 20px; margin: 40px 0
; }
        .card { padding: 30px; border-radius: 16px; background: #fff
; border: 1px solid #e2e8f0; box-shadow: 0 4px 6px -
1px rgba(0,0,0,0.1); }
        .faq-item { margin-bottom: 1
5px; border-bottom: 1px solid #e2e8f0; }
        .faq-
q { padding: 15px 0; font-weight: 600; cursor: pointer;
 display: flex; justify-content: space-between; }
        footer { background: var(--dark); color
: #94a3b8; padding: 50px 0; margin-top: 5
0px; }
        .footer-grid { display: grid; grid-template-columns: repeat(auto
-fit, minmax(200px, 1fr)); gap: 30px; }

        .footer-links a { color: #cbd5e1; display: block; margin-bottom: 1
0px; text-decoration: none; }
        .floating-kefu { position: fixed; right
: 20px; bottom: 50px; z-index: 99; }
    </
style>