 1; }
            50% { opacity: 0.3; }
        }
    </style>
</head>
<body>
    <canvas id="gameCanvas"></canvas>
    <video id="webcamView" playsinline></video>
    <canvas id="skeletonCanvas"></canvas>
    <canvas id="shadowCanvas"></canvas>
    
    <!-- ÂºïÂØºÊèêÁ§∫Ê°Ü -->
    <div id="guide-prompt">
        <h3>Get Ready</h3>
        <p>Please stand in front of the camera and start running in place!</p>
        <p>The system will automatically detect your running motion</p>
    </div>