/* 呼吸灯特效 */
        @keyframes breathe {
            0% { box-shadow: 0 5px 15px rgba(37, 99, 235, 0.2); transform: translateY(0); }
            50% { box-shadow: 0 15px 30px rgba(37, 99, 235, 0.5); transform: translateY(-3px); }
            100% { box-shadow: 0 5px 15px rgba(37, 99, 235, 0.2); transform: translateY(0); }
        }
        .hero-breathe {
            animation: breathe 3.5s infinite ease-in-out;
        }