diff --git a/package.json b/package.json
index 00a17b1..f57a865 100644
--- a/package.json
+++ b/package.json
@@ -5,6 +5,7 @@
     "type": "module",
     "scripts": {
         "dev": "vite --mode dev",
+        "dev:mock": "node scripts/start-mock.mjs",
         "typecheck": "vue-tsc --noEmit",
         "build": "vite build --mode base",
         "build:base": "vite build --mode base",
diff --git a/scripts/start-mock.mjs b/scripts/start-mock.mjs
new file mode 100644
index 0000000..577aa45
--- /dev/null
+++ b/scripts/start-mock.mjs
@@ -0,0 +1,88 @@
+#!/usr/bin/env node
+/**
+ * start-mock.mjs —— 无 VPN 一键离线演示（npm run dev:mock）。
+ *
+ * 做三件事（零第三方依赖，Node 20 自带 fetch）：
+ *   1. 拉起 YschTheme 的本地静态通道 scripts/dev-serve.mjs（9527，/dist/pc 挂 /static/）；
+ *   2. 探活 9527/static/manifest.json（若端口已被上次残留进程占用且可服务，同样放行）；
+ *   3. 以 YH_THEME_PROXY_TARGET=http://localhost:9527 spawn vite --mode mock（8131）。
+ *
+ * 效果：浏览器访问 http://localhost:8131 —— 三页治理台账全量可演示（mock 数据），
+ * 主题 CSS/切换器经本地 9527 供给，全程不触网、不需要 VPN。
+ * 主题静态资源不拷进 front/public（应用侧不持主题副本是主题仓硬原则）。
+ * VPN 恢复后照旧 npm run dev 走真后端，两者互不影响。Ctrl+C 退出会一并收掉两个子进程。
+ */
+import { spawn } from "node:child_process";
+import { existsSync } from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const frontDir = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+const themeDir = path.resolve(frontDir, "..", "..", "YschTheme");
+const themeServeScript = path.join(themeDir, "scripts", "dev-serve.mjs");
+const viteBin = path.join(frontDir, "node_modules", "vite", "bin", "vite.js");
+const THEME_PORT = 9527;
+
+const fail = (msg) => {
+    console.error(`[start-mock] ${msg}`);
+    process.exit(1);
+};
+
+if (!existsSync(themeServeScript)) {
+    fail(`找不到主题静态服务脚本 ${themeServeScript}（YschTheme 仓位置异常？）`);
+}
+if (!existsSync(viteBin)) {
+    fail(`找不到 ${viteBin}（先在 front 目录 npm install）`);
+}
+
+/* 1. 本地静态通道（YschTheme 零依赖实现，serve dist/pc 于 /static/） */
+const themeServer = spawn(process.execPath, [themeServeScript], {
+    cwd: themeDir,
+    stdio: ["ignore", "pipe", "pipe"],
+});
+themeServer.stdout.on("data", (d) => process.stdout.write(`[theme] ${d}`));
+themeServer.stderr.on("data", (d) => process.stderr.write(`[theme] ${d}`));
+
+const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
+async function waitThemeReady(tries = 24) {
+    for (let i = 0; i < tries; i++) {
+        try {
+            const res = await fetch(`http://localhost:${THEME_PORT}/static/manifest.json`);
+            if (res.ok) return true;
+        } catch {
+            /* 尚未就绪/端口被占（占位进程若可服务也会在上面返回 ok） */
+        }
+        await sleep(250);
+    }
+    return false;
+}
+
+/* 2. 探活：主题通道就绪才起前端（演示强依赖主题 CSS） */
+if (!(await waitThemeReady())) {
+    themeServer.kill();
+    fail(`9527 主题静态通道未就绪 —— 检查 ${themeServeScript} 与 YschTheme/dist/pc 是否存在（必要时先在 YschTheme 跑 npm run gen）`);
+}
+console.log(`[start-mock] 主题静态通道就绪 → http://localhost:${THEME_PORT}/static/`);
+
+/* 3. vite --mode mock（dev server 8131；/static 代理由 YH_THEME_PROXY_TARGET 指向 9527） */
+const vite = spawn(process.execPath, [viteBin, "--mode", "mock"], {
+    cwd: frontDir,
+    stdio: "inherit",
+    env: { ...process.env, YH_THEME_PROXY_TARGET: `http://localhost:${THEME_PORT}` },
+});
+
+const shutdown = () => {
+    vite.kill();
+    themeServer.kill();
+};
+vite.on("exit", (code) => {
+    themeServer.kill();
+    process.exit(code ?? 0);
+});
+themeServer.on("exit", () => {
+    /* 9527 若由残留进程提供则本子进程会因端口占用退出，探活已放行，不必终止演示 */
+});
+for (const sig of ["SIGINT", "SIGTERM"]) process.on(sig, () => {
+    shutdown();
+    process.exit(0);
+});