body{margin:0;padding:0;background:#1a1a2e;display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:100vh;font-family:Arial,sans-serif;color:#fff}#game-container{box-shadow:0 0 20px #00c3ff80;border-radius:8px;overflow:hidden;margin:20px auto;width:900px!important;height:600px!important}#game-info{width:900px;margin:20px auto;padding:15px;background:#ffffff1a;border-radius:8px;text-align:left;box-sizing:border-box}#game-info h2{text-align:center}.physics-concept{background:#00c3ff1a;border-left:4px solid #00c3ff;padding:10px;margin:10px 0;text-align:left}