<!DOCTYPE html><html><head><meta charset="utf-8"><title>SmartCare</title><style>body{display:flex;justify-content:center;align-items:center;height:100vh;font-family:system-ui;background:#f0fdf4;color:#166534;text-align:center;padding:20px}h1{font-size:24px;margin-bottom:12px}p{color:#4ade80}</style></head><body><div><h1>SmartCare API</h1><p>请使用 SmartCare App 访问</p></div></body></html>