/* Left side keeps the return control clear of the chat launcher. */
body .back-to-top {
  position: fixed;
  left: 22px;
  bottom: calc(26px + env(safe-area-inset-bottom, 0px));
  z-index: 90;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid #d8dcd9;
  border-radius: 50%;
  background: #fff;
  color: #203e35;
  box-shadow: 0 3px 12px #00000012;
  cursor: pointer;
}
body .back-to-top[hidden] { display: none; }
body .back-to-top:hover { background: #203e35; color: #fff; border-color: #203e35; }
body .back-to-top:focus-visible { outline: 2px solid #203e35; outline-offset: 4px; }
@media (max-width: 700px) {
  body .back-to-top { left: 14px; bottom: calc(96px + env(safe-area-inset-bottom, 0px)); }
}