* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #fff;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section {
            padding: 4rem 0;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: #0066cc;
            font-weight: 300;
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.2rem;
            margin-bottom: 3rem;
            color: #666;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .category-card {
            background: white;
            border-radius: 10px;
            padding: 2rem;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            border: 1px solid #e9ecef;
        }

        .category-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
        }

        .category-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #0066cc, #004499);
            border-radius: 50%;
            margin: 0 auto 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 2rem;
        }

        .category-card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: #333;
        }

        .category-card p {
            color: #666;
            margin-bottom: 1.5rem;
        }

        .card-link {
            color: #0066cc;
            text-decoration: none;
            font-weight: bold;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: color 0.3s ease;
        }

        .card-link:hover {
            color: #004499;
        }

        @media (max-width: 768px) {
            .categories-grid {
                grid-template-columns: 1fr;
            }
            
            .section-title {
                font-size: 2rem;
            }
        }