.hero-glow { filter: drop-shadow(0 0 20px rgba(59, 130, 246, 0.3)); transition: all 0.5s ease; }
        .hero-glow:hover { filter: drop-shadow(0 0 35px rgba(59, 130, 246, 0.5)); transform: scale(1.02); }
        .breathing { animation: breathing 3s ease-in-out infinite; }
        @keyframes breathing { 0%, 100% { opacity: 0.8; } 50% { opacity: 1; } }