.kapi-preview-back {
  position: fixed;
  left: 18px;
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 10000;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid #ffffff36;
  border-radius: 30px;
  background: #000;
  color: #fff;
  box-shadow: 0 5px 24px #0002;
  font:
    500 12px/1.4 -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  text-decoration: none;
  backdrop-filter: blur(12px);
}
.kapi-preview-back:hover {
  background: #000;
  color: #fff;
}
.kapi-preview-back:focus-visible {
  outline: 2px solid #c4ff91;
  outline-offset: 4px;
}