body { margin: 0; background: #07070f; color: #7ff; font-family: "Courier New", monospace;
  display: flex; align-items: center; justify-content: center; height: 100vh; overflow: hidden; position: relative; }
#game { background: #0b0b1a; border: 3px solid #0ff; box-shadow: 0 0 30px #0ff8; max-width: 100vw; max-height: 100vh; cursor: crosshair; }
#hud { position: absolute; top: 12px; left: 50%; transform: translateX(-50%); width: 780px; max-width: 95vw;
  display: flex; justify-content: space-between; font-size: 20px; text-shadow: 0 0 8px #0ff; pointer-events: none; }
#menu { position: absolute; inset: 0; background: #000c; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center; padding: 20px; }
#menu h1 { font-size: 48px; color: #f0f; text-shadow: 0 0 20px #f0f, 0 0 40px #0ff; margin: 0 0 10px; }
#menu p { max-width: 600px; font-size: 18px; }
button { font: inherit; font-size: 28px; padding: 10px 40px; margin-top: 20px; background: #0ff; color: #002;
  border: 0; border-radius: 8px; cursor: pointer; box-shadow: 0 0 20px #0ff; }
button:hover { background: #f0f; }