html.pc-in-frame .pc-viewer-back {
  display: none !important;
}

.pc-viewer-back {
  position: fixed;
  top: .7rem;
  left: .7rem;
  z-index: 240;
  display: inline-flex;
  align-items: center;
  gap: .22rem;
  height: 1.58rem;
  min-height: 1.58rem;
  padding: 0 .5rem 0 .34rem;
  border: 1px solid rgba(51, 51, 51, 0.3);
  border-radius: .5rem;
  background: rgba(248, 249, 250, 0.7);
  color: #55515d;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  font-size: .62rem;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: color .2s ease, background-color .2s ease;
}

.model-renderer-container .pc-viewer-back,
.sec-model .pc-viewer-back,
.sec-model:fullscreen .pc-viewer-back,
.model-renderer-container:fullscreen .pc-viewer-back {
  position: absolute;
}

.pc-viewer-back svg {
  width: .76rem;
  height: .76rem;
  display: block;
}

.pc-viewer-back:hover {
  background: rgba(255, 255, 255, 0.96);
  color: #333333;
}

.pc-viewer-back:focus-visible {
  outline: 2px solid #c5b0dd;
  outline-offset: 3px;
}

@media (max-width: 768px) {
  .pc-viewer-back {
    top: 1rem;
    left: 1rem;
    height: 2.25rem;
    min-height: 2.25rem;
    padding: 0 .72rem 0 .5rem;
    gap: .32rem;
    font-size: .75rem;
  }

  .pc-viewer-back svg {
    width: 1rem;
    height: 1rem;
  }
}