:root{--bg: #05060d;--panel: #141833;--ink: #dfe6ff;--muted: #7b84b8}*{box-sizing:border-box}html,body{margin:0;height:100%;background:#05060d;color:var(--ink);font-family:Trebuchet MS,Segoe UI,sans-serif;overflow:hidden}#app{height:100%;display:flex;align-items:center;justify-content:center}canvas{background:#05070f;border:2px solid #2a3160;border-radius:6px;image-rendering:pixelated;cursor:crosshair;touch-action:none;max-width:100vw;max-height:100vh}