html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: #000;
}

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

#scene:active {
  cursor: grabbing;
}

#subtitle {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 8vh;
  text-align: center;
  color: #fff;
  font-family: Helvetica, Arial, sans-serif;
  font-weight: 700;
  font-size: clamp(14px, 2.2vw, 22px);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.6);
  pointer-events: none;
  user-select: none;
}

#powered {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 4.5vh;
  text-align: center;
  color: #2a2a2a;
  font-family: Helvetica, Arial, sans-serif;
  font-weight: 700;
  font-size: clamp(10px, 1.4vw, 14px);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  pointer-events: none;
  user-select: none;
}