.rd-stage { background: #010604; cursor: crosshair; }
.rd-stage:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.panel select { width: 100%; margin-top: 6px; }
.px-under { margin-top: 12px; }
.px-exit { position: absolute; top: max(10px, env(safe-area-inset-top)); right: 10px; z-index: 7; display: none; align-items: center; gap: 4px;
  font: 600 13px/1 system-ui, sans-serif; padding: 8px 12px; border-radius: 999px; border: 0; background: rgba(0, 0, 0, .45); color: #fff;
  opacity: .6; cursor: pointer; transition: opacity .3s; }
.px-exit span { font-size: 17px; line-height: 13px; }
.is-full .px-exit { display: inline-flex; }
.is-full.st-idle:not(.px-show) .px-exit { opacity: 0; pointer-events: none; }
.tool-stage.is-full .fs-btn { display: none; }