body{margin:0;background:#0f1220;color:#e9ecff;font-family:Arial,sans-serif;display:flex;justify-content:center}main{padding:20px}.wrap{display:flex;gap:18px;align-items:flex-start}canvas{border:2px solid #404875;background:#10152b}.hint{max-width:220px;font-size:12px;color:#a8b0dc}button{padding:8px 12px;background:#5b7cff;border:none;color:#fff;border-radius:6px;cursor:pointer}