.site-return {
  position: fixed;
  top: max(12px, env(safe-area-inset-top));
  left: max(12px, env(safe-area-inset-left));
  z-index: 10000;
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 2px solid #101010;
  border-radius: 999px;
  padding: 0 13px;
  background: #fff9e8;
  box-shadow: 4px 4px 0 #ff76b6;
  color: #101010;
  font: 900 10px/1 "Arial Black", "Microsoft YaHei UI", sans-serif;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.site-return span {
  font-size: 20px;
}

.site-return:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 #3157ff;
}

.site-return:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 #101010;
}

.site-return:focus-visible {
  outline: 4px solid #f4e32e;
  outline-offset: 4px;
}

@media (max-width: 600px) {
  .app-shell {
    padding: 56px 14px 8px;
  }

  .phone-frame {
    max-height: calc(100vh - 64px);
  }

  .site-return {
    top: 7px;
    right: auto;
    left: 50%;
    width: auto;
    padding: 0 13px;
    transform: translateX(-50%);
  }

  .site-return:hover {
    transform: translateX(-50%) translateY(-2px);
  }

  .site-return:active {
    transform: translateX(-50%) translateY(1px);
  }
}