.lang-active,
.lang-active * {
  color: #ffffff !important;
  font-weight: 600; 
    padding: 6px 14px;
    border-radius: 999px;
    background-color: #ff67b3; /* розовый */
}

@media (max-width: 640px) {
  .lang-ru,
  .lang-kz {
    font-size: 14px;
    padding: 4px 10px;
  }

  .lang-active {
    padding: 4px 10px;
    border-radius: 12px;
  }
}