:root { --
primary: #2563eb; --dark: #1e293b; --light: #f8faf
c; --accent: #8b5cf6; }
        * { margin: 0; padding: 0
; box-sizing: border-box; }
        body { font-family: 'PingFang SC', sans-serif; color:
 var(--dark); line-height: 1.6; background-color: #ffffff; }
        .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
0; border-bottom: 1px solid #e2e8f0; }
        nav { display: flex; align
-items: center; justify-content: space-between; height: 70px; }
        .nav
-links { display: flex; gap: 0; }
        .nav-links a { text-decoration: none; color
: var(--dark); padding: 10px 15px; font-weight: 500
; }
        .hero { padding: 100px 0; text-align: center; background
: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%); }

        h1 { font-size: 3rem; margin-bottom: 20px; color:
 var(--dark); }
        .btn-primary { display: inline-block; background: var(--primary); color
: #fff; padding: 12px 30px; border-radius: 8px; text-decoration:
 none; margin-top: 20px; transition: 0.3s; }
        .card-grid { display:
 grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1
fr)); gap: 20px; padding: 60px 0; }
        .card { padding
: 30px; border-radius: 16px; border: 1px solid #e2e8f
0; transition: 0.3s; }
        .card:hover { transform: translateY(-5px
); box-shadow: 0 10px 20px rgba(0,0,0,0
.05); }
        .faq-item { border-bottom: 1px solid #e2e8f
0; padding: 20px 0; cursor: pointer; }
        .footer { background: var
(--dark); color: #fff; padding: 40px 0; text-align: center; }

        .float-kefu { position: fixed; bottom: 30px; right: 3
0px; z-index: 999; }
        input, select, textarea { width: 1
00%; padding: 12px; margin: 10px 0; border: 1px
 solid #cbd5e1; border-radius: 8px; }