diff --git a/app/demo/[industry]/[[...path]]/page.tsx b/app/demo/[industry]/[[...path]]/page.tsx
new file mode 100644
index 0000000..9c286f9
--- /dev/null
+++ b/app/demo/[industry]/[[...path]]/page.tsx
@@ -0,0 +1,63 @@
+import Link from "next/link";
+import type { Metadata } from "next";
+import { notFound } from "next/navigation";
+import { ApiError } from "@/services/api-client";
+import { getDemoPage, getIndustryDemos } from "@/services/demo.service";
+import { BlockRenderer } from "@/blocks/BlockRenderer";
+
+type Props = { params: Promise<{ industry: string; path?: string[] }> };
+
+async function load(params: Props["params"]) {
+  const { industry, path } = await params;
+  try {
+    return await getDemoPage(industry, path);
+  } catch (error) {
+    if (error instanceof ApiError && error.status === 404) notFound();
+    throw error;
+  }
+}
+
+export async function generateMetadata({ params }: Props): Promise<Metadata> {
+  const page = await load(params);
+  return { title: { absolute: `${page.title} | ${page.label}演示` }, robots: { index: false, follow: false } };
+}
+
+export default async function IndustryDemoPage({ params }: Props) {
+  const [page, demos, route] = await Promise.all([load(params), getIndustryDemos(), params]);
+  const base = `/demo/${page.industry}`;
+  const colors: Record<string, string> = {
+    software: "border-sky-500", manufacturing: "border-orange-500", consulting: "border-emerald-500",
+    education: "border-violet-500", healthcare: "border-teal-500", dining: "border-rose-500",
+    construction: "border-amber-500", "real-estate": "border-indigo-500", "home-renovation": "border-lime-500",
+    "agri-food": "border-green-500", "energy-environment": "border-cyan-500", "auto-services": "border-red-500",
+    "culture-media": "border-fuchsia-500", "sports-fitness": "border-blue-500", "pet-services": "border-yellow-500",
+    "legal-services": "border-slate-700", "finance-tax": "border-purple-500", "human-resources": "border-pink-500",
+  };
+  return (
+    <div className={`border-t-4 ${colors[page.industry] ?? "border-slate-500"}`}>
+      <aside className="border-b bg-amber-50 px-6 py-3 text-center text-sm text-amber-950">
+        虚构行业演示 · 不代表真实客户、资质或业绩 · 请勿提交真实个人或商业敏感信息
+      </aside>
+      <header className="border-b bg-white px-6 py-5">
+        <div className="mx-auto flex max-w-7xl flex-wrap items-center justify-between gap-4">
+          <Link href={base} className="text-xl font-bold">{page.company}</Link>
+          <nav aria-label="切换行业" className="flex flex-wrap gap-3 text-sm">
+            {demos.items.map((item) => <Link key={item.slug} href={item.url} aria-current={item.slug === page.industry ? "page" : undefined} className={item.slug === page.industry ? "font-bold underline" : "text-slate-600"}>{item.label}</Link>)}
+            <Link href="/demo" className="text-slate-500">全部模板</Link>
+          </nav>
+        </div>
+        <nav aria-label="行业导航" className="mx-auto mt-5 flex max-w-7xl flex-wrap gap-5 text-sm">
+          {page.navigation.map((item) => <Link key={item.url} href={item.url} className="text-slate-700 hover:underline">{item.title}</Link>)}
+        </nav>
+      </header>
+      {route.path?.length ? <div className="mx-auto max-w-7xl px-6 pt-10"><h1 className="text-3xl font-bold">{page.title}</h1>{page.intro && <p className="mt-4 text-slate-600">{page.intro}</p>}</div> : null}
+      {page.html && <div className="prose mx-auto max-w-3xl px-6 py-12" dangerouslySetInnerHTML={{ __html: page.html }} />}
+      <BlockRenderer blocks={page.blocks} />
+      {!!page.children.length && <div className="mx-auto grid max-w-7xl gap-5 px-6 py-12 md:grid-cols-2">{page.children.map((child) => <Link key={child.url} href={child.url} className="rounded-xl border border-slate-200 bg-white p-6 font-semibold hover:shadow-md">{child.title} →</Link>)}</div>}
+      <footer className="border-t bg-slate-50 px-6 py-8 text-center text-sm text-slate-600">
+        <p>{page.company} · 模板内容仅供演示</p>
+        <div className="mt-3 flex justify-center gap-6"><Link href={`${base}/privacy-policy`}>演示隐私说明</Link><Link href="/demo">切换模板</Link><Link href="/">返回当前官网</Link></div>
+      </footer>
+    </div>
+  );
+}
diff --git a/app/demo/page.tsx b/app/demo/page.tsx
new file mode 100644
index 0000000..82436d9
--- /dev/null
+++ b/app/demo/page.tsx
@@ -0,0 +1,28 @@
+import Link from "next/link";
+import type { Metadata } from "next";
+import { getIndustryDemos } from "@/services/demo.service";
+
+export const metadata: Metadata = { title: { absolute: "行业官网模板演示" }, robots: { index: false, follow: false } };
+
+export default async function DemoGallery() {
+  const result = await getIndustryDemos().catch(() => null);
+  return (
+    <div className="mx-auto max-w-7xl px-6 py-16">
+      <Link href="/" className="text-sm text-slate-600 underline">返回当前官网</Link>
+      <h1 className="mt-8 text-4xl font-bold text-slate-900">行业官网模板演示</h1>
+      <p className="mt-4 text-slate-600">浏览下方行业模板：独立内容，无损切换。所有企业及案例均为虚构演示。</p>
+      {!result?.items.length && <p className="mt-8">演示内容尚未就绪，请启动后端并运行 seed_industry_templates 初始化命令。</p>}
+      <div className="mt-10 grid gap-6 md:grid-cols-3">
+        {result?.items.map((item, index) => (
+          <Link key={item.slug} href={item.url} className="rounded-2xl border border-slate-200 bg-white p-8 shadow-sm transition hover:-translate-y-1 hover:shadow-lg">
+            <span className="text-sm font-semibold text-sky-700">模板 {String(index + 1).padStart(2, "0")}</span>
+            <h2 className="mt-4 text-2xl font-bold">{item.label}</h2>
+            <p className="mt-3 text-sm text-slate-500">{item.company}</p>
+            <p className="mt-4 leading-7 text-slate-600">{item.description}</p>
+            <span className="mt-6 inline-block font-medium text-sky-700">浏览演示 →</span>
+          </Link>
+        ))}
+      </div>
+    </div>
+  );
+}
diff --git a/app/layout.tsx b/app/layout.tsx
index 2c22409..38ecdf1 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -6,6 +6,7 @@ import Footer from "@/components/layout/Footer";
 import CookieConsent from "@/components/layout/CookieConsent";
 import ReactQueryProvider from "@/providers/react-query-provider";
 import { getSiteSettings } from "@/services/site-settings.service";
+import SiteChrome from "@/components/layout/SiteChrome";
 
 // 面向中国大陆用户，避免依赖 next/font/google（构建期需访问 Google 服务器）。
 // 生产环境建议自托管思源黑体 / HarmonyOS Sans 子集，这里先用系统字体栈占位。
@@ -37,9 +38,9 @@ export default async function RootLayout({ children }: LayoutProps<"/">) {
               </a>
             </div>
           )}
-          <Header />
+          <SiteChrome><Header /></SiteChrome>
           <main className="flex-1">{children}</main>
-          <Footer />
+          <SiteChrome><Footer /></SiteChrome>
           <CookieConsent />
         </ReactQueryProvider>
       </body>
diff --git a/components/layout/SiteChrome.tsx b/components/layout/SiteChrome.tsx
new file mode 100644
index 0000000..e8b3f06
--- /dev/null
+++ b/components/layout/SiteChrome.tsx
@@ -0,0 +1,10 @@
+"use client";
+
+import { usePathname } from "next/navigation";
+import type { ReactNode } from "react";
+
+export default function SiteChrome({ children }: { children: ReactNode }) {
+  const pathname = usePathname();
+  if (pathname === "/demo" || pathname.startsWith("/demo/")) return null;
+  return <>{children}</>;
+}
diff --git a/services/demo.service.ts b/services/demo.service.ts
new file mode 100644
index 0000000..eb1d2e1
--- /dev/null
+++ b/services/demo.service.ts
@@ -0,0 +1,31 @@
+import { fetchAPI } from "./api-client";
+import type { StreamFieldBlock } from "@/types/wagtail";
+
+export interface IndustryDemo {
+  slug: string;
+  label: string;
+  company: string;
+  description: string;
+  url: string;
+}
+
+export interface DemoPage {
+  industry: string;
+  label: string;
+  company: string;
+  title: string;
+  blocks: StreamFieldBlock[];
+  html: string;
+  intro: string;
+  children: { title: string; url: string }[];
+  navigation: { title: string; url: string }[];
+}
+
+export function getIndustryDemos() {
+  return fetchAPI<{ items: IndustryDemo[] }>("/api/v1/custom/core/demos/", { revalidate: 0 });
+}
+
+export function getDemoPage(industry: string, segments: string[] = []) {
+  const path = encodeURIComponent(segments.join("/"));
+  return fetchAPI<DemoPage>(`/api/v1/custom/core/demos/${encodeURIComponent(industry)}/?path=${path}`, { revalidate: 0 });
+}
diff --git a/tests/site-setup.test.cjs b/tests/site-setup.test.cjs
index 05d4477..28b0bac 100644
--- a/tests/site-setup.test.cjs
+++ b/tests/site-setup.test.cjs
@@ -75,3 +75,27 @@ test("simple content preview resolves only supported about route", () => {
   assert.equal(resolvePreviewPath("core.simplecontentpage", { meta: { slug: "about" } }), "/about");
   assert.equal(resolvePreviewPath("core.simplecontentpage", { meta: { slug: "unknown" } }), null);
 });
+
+test("demo requests isolate industry paths and bypass shared caches", async () => {
+  const calls = [];
+  const { getDemoPage } = loadModule("services/demo.service.ts", {
+    "./api-client": { fetchAPI: async (url, options) => { calls.push({ url, options }); return {}; } },
+  });
+  await getDemoPage("manufacturing", ["products", "precision-parts"]);
+  await getDemoPage("consulting", ["about"]);
+  assert.equal(calls[0].url, "/api/v1/custom/core/demos/manufacturing/?path=products%2Fprecision-parts");
+  assert.equal(calls[1].url, "/api/v1/custom/core/demos/consulting/?path=about");
+  assert.ok(calls.every((call) => call.options.revalidate === 0));
+});
+
+test("default site chrome is hidden only on demo routes", () => {
+  let pathname = "/demo/software/products";
+  const { default: SiteChrome } = loadModule("components/layout/SiteChrome.tsx", {
+    "next/navigation": { usePathname: () => pathname },
+  });
+  assert.equal(SiteChrome({ children: "default header" }), null);
+  pathname = "/demo";
+  assert.equal(SiteChrome({ children: "default header" }), null);
+  pathname = "/products";
+  assert.equal(SiteChrome({ children: "default header" }).props.children, "default header");
+});