:root { --primary: #2563eb; --dark
: #1e293b; --bg: #f8fafc; --text: #334
155; }
        * { box-sizing: border-box; margin: 0; padding:
 0; }
        body { font-family: 'PingFang SC', sans-serif; background: var
(--bg); color: var(--text); line-height: 1.6; }
        .container {
 max-width: 1200px; margin: 0 auto; padding: 0 20px; }

        header { background: #fff; padding: 15px 0; position: sticky; top: 0; z-
index: 1000; border-bottom: 1px solid #e2e8f0; }
        
nav { display: flex; justify-content: space-between; align-items: center; }
        .nav-links { display
: flex; gap: 0; align-items: center; }
        .nav-links a { padding
: 0 15px; text-decoration: none; color: var(--dark); font-weight: 50
0; }
        .hero { padding: 100px 0; text-align: center; background
: linear-gradient(135deg, #eff6ff, #fff); }
        h1 { font
-size: 3rem; margin-bottom: 20px; color: var(--dark); }

        .btn { display: inline-block; padding: 12px 30px; background: var(--primary);
 color: #fff; border-radius: 8px; text-decoration: none; margin-top: 
20px; transition: 0.3s; }
        .grid { display: grid; grid-template-columns
: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin: 
50px 0; }
        .card { background: #fff; padding: 30px;
 border-radius: 16px; border: 1px solid #e2e8f0; transition: 
0.3s; }
        .card:hover { transform: translateY(-5px); box-shadow: 0 1
0px 25px rgba(0,0,0,0.05); }
        table { width: 1
00%; border-collapse: collapse; margin: 30px 0; background: #fff; }

        th, td { padding: 15px; border: 1px solid #e2e8f0;
 text-align: left; }
        footer { background: #0f172a; color: #cbd
5e1; padding: 50px 0 20px; }
        .form-group
 { margin-bottom: 15px; }
        input, select, textarea { width: 100%; padding: 
12px; border: 1px solid #cbd5e1; border-radius: 6px; }