.hc-notification-sound-toggle{
  appearance:none;border:1px solid #cfe0f2;background:#fff;color:#14243a;
  min-width:42px;height:42px;border-radius:13px;display:inline-flex;align-items:center;
  justify-content:center;font-size:18px;cursor:pointer;box-shadow:0 8px 24px rgba(31,73,125,.08);
}
.hc-notification-sound-toggle:hover{transform:translateY(-1px);border-color:#82b7e8}
@media (prefers-color-scheme:dark){
  .hc-notification-sound-toggle{background:#14243a;color:#fff;border-color:#334b66}
}