:root { color-scheme: dark; }
  html, body {
    margin: 0; padding: 0; height: 100%; overflow: hidden;
    background: #000;
    font-family: "Cascadia Mono", Consolas, "Courier New", monospace;
    -webkit-user-select: none; user-select: none;
    touch-action: none;
  }
  #stage {
    position: fixed; inset: 0;
    display: flex; align-items: center; justify-content: center;
    background: #000;
  }
  #game {
    display: block;
    image-rendering: pixelated;
    background: #000;
    box-shadow: 0 0 60px rgba(80, 255, 140, 0.07);
  }
  #hint {
    position: fixed; bottom: 6px; left: 0; right: 0;
    text-align: center; color: rgba(200,255,220,0.28);
    font-size: 11px; pointer-events: none; letter-spacing: 0.5px;
  }
  @media (max-width: 700px) { #hint { display: none; } }

.iamu-home { position: fixed; z-index: 20; top: 10px; left: 10px; padding: 6px 8px; border: 1px solid rgba(200,255,220,0.35); color: rgba(200,255,220,0.62); background: rgba(0,0,0,0.78); font-size: 10px; letter-spacing: 0.12em; text-decoration: none; touch-action: auto; }
.iamu-home:hover, .iamu-home:focus-visible { color: #fff; border-color: #4ade80; outline: none; }
.iamu-home svg { display: inline-block; width: 0.95em; height: 0.95em; margin-right: 0.5em; vertical-align: -0.12em; overflow: visible; }
.iamu-home path { fill: none; stroke: currentColor; stroke-width: 27; stroke-linecap: round; }