body { font-family: sans-serif; display: flex; align-items: center; justify-content: center; height: 100vh; margin: 0; background: #f5f5f5; }
        .card { background: #fff; padding: 2rem 3rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,.1); text-align: center; }
        h1 { color: #2d6a4f; }
        p  { color: #555; }