body{font-family:Arial,sans-serif;background:#f5f1eb;margin:0}
.layout{display:grid;grid-template-columns:260px 1fr 260px;height:100vh}
.left,.center,.right{padding:16px;overflow:auto}
.left,.right{background:#fff}
.center{background:#faf7f3}
#timer{font-size:48px;font-weight:bold;margin:12px 0}
#chat{height:300px;overflow:auto;background:#fff;padding:10px;border-radius:10px}
#avatar{width:180px;height:260px;object-fit:contain;background:#eee;border-radius:12px}
button{margin:4px;padding:8px 12px}