如何使2个类星体切换按钮组互斥？

<div class="button-group">
  <button id="star1-btn" class="active">星体1</button>
  <button id="star2-btn">星体2</button>
</div>

<div class="button-group">
  <button id="star3-btn" class="active">星体3</button>
  <button id="star4-btn">星体4</button>
</div>

const buttonGroups = document.querySelectorAll('.button-group');

buttonGroups.forEach(group => {
  const buttons = group.querySelectorAll('button');
  
  buttons.forEach(button => {
    button.addEventListener('click', () => {
      buttons.forEach(btn => btn.classList.remove('active'));
      button.classList.add('active');
    });
  });
});

.button-group {
  display: flex;
}

.button-group button {
  padding: 10px;
  background-color: #ccc;
  border: none;
  cursor: pointer;
}

.button-group button.active {
  background-color: #f00;
  color: #fff;
}