.hero-glow {
            filter: drop-shadow(0 0 15px rgba(59, 130, 246, 0.5));
            animation: pulse-glow 3s infinite ease-in-out;
        }
        @keyframes pulse-glow {
            0%, 100% { filter: drop-shadow(0 0 15px rgba(59, 130, 246, 0.3)); }
            50% { filter: drop-shadow(0 0 25px rgba(59, 130, 246, 0.6)); }
        }