diff --git a/src/config.js b/src/config.js
index 8325e53..ba409f2 100644
--- a/src/config.js
+++ b/src/config.js
@@ -11,10 +11,11 @@ const env = import.meta.env || {};
 
 /* 运行期解析（惰性读取 window.__DPM_*__，供 main.jsx bootstrap 覆盖后再生效） */
 function resolveHost() {
-  const h = window.location.hostname || '192.168.1.9';
-  // Tauri 打包 WebView（tauri.localhost / localhost）→ 服务同机部署用 192.168.1.9
-  if (h === 'tauri.localhost' || h === 'localhost' || h === '192.168.1.9' || h.includes('tauri')) {
-    return '192.168.1.9';
+  const h = window.location.hostname || 'opc.pinesound.cn';
+  // Tauri 打包 WebView（tauri.localhost / localhost）→ 生产构建默认接入生产 opc.pinesound.cn；
+  // 本地开发（npm run dev）仍回退局域网测试机 192.168.1.9
+  if (h === 'tauri.localhost' || h === 'localhost' || h.includes('tauri')) {
+    return import.meta.env.PROD ? 'opc.pinesound.cn' : '192.168.1.9';
   }
   return h; // 浏览器开发/局域网：当前主机 IP
 }
diff --git a/src/main.jsx b/src/main.jsx
index f444e69..0136538 100644
--- a/src/main.jsx
+++ b/src/main.jsx
@@ -5,7 +5,7 @@ import BindScreen from "./components/BindScreen.jsx";
 import { isDeviceBound } from "./utils/tenant";
 import ErrorBoundary from "./components/ErrorBoundary";
 import { ThemeProvider } from "@appica/ui-react/providers/theme-provider";
-import { getApiBase } from "./config";
+import { getApiBase, getMqttUrl, getMqttCredentials } from "./config";
 import { invoke } from "@tauri-apps/api/core";
 import "./styles/global.css";
 
@@ -80,6 +80,10 @@ async function bootstrapRuntimeConfig() {
 }
 
 bootstrapRuntimeConfig().then(() => {
+  // 启动诊断：打印最终生效的 API / MQTT 地址（config.json > 构建烘焙 > /api/config 下发 > 内置默认）
+  try {
+    console.info(`[bootstrap] API_BASE=${getApiBase()} MQTT_URL=${getMqttUrl()} MQTT_USER=${getMqttCredentials().username || "(空)"}`);
+  } catch (e) { /* 忽略 */ }
   ReactDOM.createRoot(document.getElementById("root")).render(
     <React.StrictMode>
       <ErrorBoundary>