@keyframes breathe {
            0%, 100% { box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.4); }
            50% { box-shadow: 0 20px 40px -5px rgba(59, 130, 246, 0.7); }
        }
        .hero-image { animation: breathe 4s ease-in-out infinite; }