.service-card {
            transition: all 0.3s ease;
        }
        .service-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }
        .checkmark {
            display: none;
        }
        .service-card.selected .checkmark {
            display: flex;
        }