.lang { display: none; margin-bottom: 1em; }
.link-btn {
  display: inline-block;
  background: #4CAF50;
  color: white;
  padding: 10px 18px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
}
.link-btn:hover { background: #45a049; }
