/* 自定义呼吸灯动画 */
        @keyframes breathe {
            0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
            70% { box-shadow: 0 0 0 20px rgba(59, 130, 246, 0); }
            100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
        }
        .animate-breathe {
            animation: breathe 3s infinite;
        }
        /* 针对移动端视频自适应 */
        .video-container {
            position: relative;
            padding-bottom: 56.25%; /* 16:9 ratio */
            height: 0; 
            overflow: hidden;
        }
        .video-container video {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }