:root { --primary-color: #6366f1; --bg-color: #f8fafc; --text-color: #1e293b; --accent-color: #38bdf8; }
        body { font-family: 'PingFang SC', 'Helvetica Neue', sans-serif; background-color: var(--bg-color); color: var(--text-color); margin: 0; padding: 0; line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: #fff; padding: 15px 0; border-bottom: 1px solid #e2e8f0; position: sticky; top: 0; z-index: 100; }
        .nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 0; }
        .nav-links { display: flex; gap: 0; align-items: center; }
        .nav-links a { text-decoration: none; color: var(--text-color); font-weight: 500; padding: 10px 15px; }
        .btn { padding: 10px 20px; border-radius: 8px; font-weight: 600; cursor: pointer; transition: 0.3s; text-decoration: none; display: inline-block; }
        .btn-primary { background: var(--primary-color); color: #fff; }
        .hero { padding: 100px 0; text-align: center; }
        .hero h1 { font-size: 3rem; margin-bottom: 20px; color: #0f172a; }
        .card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin: 40px 0; }
        .card { background: #fff; padding: 25px; border-radius: 12px; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1); }
        .table-responsive { overflow-x: auto; }
        table { width: 100%; border-collapse: collapse; margin: 20px 0; }
        th, td { padding: 12px; border: 1px solid #e2e8f0; }
        footer { background: #0f172a; color: #cbd5e1; padding: 40px 0; margin-top: 60px; }
        .form-group { margin-bottom: 15px; }
        input, select, textarea { width: 100%; padding: 10px; margin-top: 5px; border-radius: 6px; border: 1px solid #cbd5e1; }
        @media (max-width: 768px) { .nav-links { display: none; } }