@keyframes pulse-shadow {
            0%, 100% { box-shadow: 0 0 20px rgba(59, 130, 246, 0.3); }
            50% { box-shadow: 0 0 40px rgba(59, 130, 246, 0.6); }
        }
        .hero-img { animation: pulse-shadow 3s infinite; }
        .faq-item summary::-webkit-details-marker { display: none; }