#marlin-chat-toggle {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 56px;
  height: 56px;
  border-radius: 999px;
  border: none;
  background: #ff5c00;
  color: #fff;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  z-index: 9999;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  display: grid;
  place-items: center;
  text-decoration: none;
}
#marlin-chat-toggle:hover { background: #ff7a33; }
#marlin-chat-toggle:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }