type CardProps = { title: string; children: React.ReactNode };
function Card({ title, children }: CardProps) {
  return <section aria-labelledby={`card-${title}`}><h2 id={`card-${title}`}>{title}</h2>{children}</section>;
}
export default function Dashboard() {
  return <Card title="服务状态"><p>正常</p></Card>;
}