export default function GlobalLoading() {
  return (
    <main className="app-loading-shell" aria-live="polite" aria-busy="true">
      <section className="app-loading-card">
        <div className="app-loading-spinner" />
        <h2>页面加载中</h2>
        <p>正在切换模块，请稍候。</p>
      </section>
    </main>
  );
}

