/* 呼吸灯动画 */
        @keyframes pulse-shadow {
            0% { box-shadow: 0 0 0 0 rgba(153, 27, 27, 0.4); }
            70% { box-shadow: 0 0 0 20px rgba(153, 27, 27, 0); }
            100% { box-shadow: 0 0 0 0 rgba(153, 27, 27, 0); }
        }
        .hero-img-effect {
            animation: pulse-shadow 3s infinite;
        }