:root { --
primary: #e63946; --dark: #1d3557; --light: #f8
f9fa; --accent: #f1faee; }
        * { box-sizing: border-box; margin: 
0; padding: 0; }
        body { font-family: 'Segoe UI', Roboto, sans-serif; line
-height: 1.6; color: #333; background: #fff; }
        .container { max-width
: 1200px; margin: 0 auto; padding: 0 20px; }
        
header { background: #fff; padding: 15px 0; border-bottom: 1px solid #eee; position:
 sticky; top: 0; z-index: 1000; }
        .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: var(--dark); font-weight: 500;
 }
        .btn { padding: 10px 20px; border-radius: 5px; cursor: pointer;
 transition: 0.3s; }
        .btn-primary { background: var(--primary); color: #fff;
 border: none; }
        .hero { padding: 80px 0; text-align: center; background
: linear-gradient(135deg, #fef2f2 0%, #fff 100%); }

        h1 { font-size: 2.5rem; color: var(--dark); margin-bottom: 20
px; }
        section { padding: 60px 0; }
        .grid { display: grid; grid
-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 3
0px; }
        .card { padding: 30px; border: 1px solid #eee; border-radius
: 12px; transition: 0.3s; }
        .card:hover { box-shadow: 0
 10px 30px rgba(0,0,0,0.1); transform: translateY(-
5px); }
        footer { background: var(--dark); color: #fff; padding: 40px 0; text
-align: center; }
        .float-kefu { position: fixed; right: 20px; bottom:
 20px; z-index: 999; width: 60px; cursor: pointer; }
        
@media (max-width: 768px) { .nav-links { display: none; } }