.public-demo-return {
  position: fixed;
  left: max(14px, env(safe-area-inset-left));
  bottom: max(14px, env(safe-area-inset-bottom));
  z-index: 2147483647;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  max-width: calc(100vw - 28px);
  box-sizing: border-box;
  padding: 10px 16px;
  border: 1px solid #ff7900;
  border-radius: 999px;
  background: #151515;
  color: #fff;
  font: 600 13px/1.4 system-ui, sans-serif;
  text-decoration: none;
}
.public-demo-return:hover { background: #282018; color: #fff; }
.public-demo-return:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }