/* ========== 论坛模块专属样式 ========== */
.forum-page-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 10px 0 30px;
}
```

#### 6. 新建 `forum.js`
```javascript
(function(){
  'use strict';

  function initForum() {
    var item = document.querySelector('.couple-icon-item[data-action="forum"]');
    if (item && !item._bound) {
      item._bound = true;
      item.addEventListener('click', function(e) {
        e.stopPropagation();
        var shell = document.querySelector('.app-shell');
        if (shell && shell.classList.contains('edit-mode')) return;
        if (window.AppNav && window.AppNav.showToast) {
          window.AppNav.showToast('论坛功能正在开发中，敬请期待…');
        }
      });
    }
  }

  if (window._dbReady) initForum();
  else {
    window.addEventListener('dbReady', initForum);
    setTimeout(initForum, 200);
  }
})();