:root { --primary-color: #d32f2f
; --text-color: #333; --bg-color: #fff; --container-width: 12
00px; }
        * { box-sizing: border-box; margin: 0; padding: 0; }

        body { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.
6; color: var(--text-color); background: var(--bg-color); }
        .container {
 max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }

        header { padding: 20px 0; border-bottom: 1px solid #eee; }

        .nav-inner { display: flex; justify-content: space-between; align-items: center; }
        
.nav-links { display: flex; gap: 0; list-style: none; }
        .nav-links a {
 padding: 10px 15px; text-decoration: none; color: #333; font-
weight: 500; transition: color 0.3s; }
        .nav-links a:hover {
 color: var(--primary-color); }
        .hero { padding: 80px 0; text
-align: center; background: #fff5f5; }
        h1 { font-size: 2.5rem
; color: var(--primary-color); margin-bottom: 20px; }
        .btn {
 display: inline-block; padding: 12px 30px; background: var(--primary-color); color: #fff
; text-decoration: none; border-radius: 5px; font-weight: bold; transition: transform
 0.2s; }
        .btn:hover { transform: translateY(-2px); }
        section { padding:
 60px 0; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit
, minmax(280px, 1fr)); gap: 30px; }
        .card { padding
: 25px; border: 1px solid #eee; border-radius: 10px; transition: shadow 
0.3s; }
        .card:hover { box-shadow: 0 10px 20
px rgba(0,0,0,0.1); }
        .faq-item { margin-bottom: 1
5px; border-bottom: 1px solid #eee; padding-bottom: 10px; }
        footer
 { background: #222; color: #fff; padding: 40px 0; text-align: center; }

        .form-group { margin-bottom: 15px; }
        input, select, textarea { width: 1
00%; padding: 10px; margin-top: 5px; border: 1px solid #ddd; }

        .float-kefu { position: fixed; bottom: 30px; right: 30px; z-index
: 1000; }