diff --git a/README.md b/README.md
index a811a33..5101b95 100644
--- a/README.md
+++ b/README.md
@@ -119,7 +119,7 @@
   - 方向：官网品牌宣传为主，产品矩阵页保留为聚合入口——每产品一句话定位 + 指标证据 + 外链独立站
   - 成熟产品走 `externalUrl` 外链（NovaVis → novavis.p.novalon.cn 已实践）；未成熟产品官网详情页占位，独立站上线后切换外链
   - 参照案例（已核实）：IHG 品牌组合页、字节跳动 bytedance.com/products、腾讯 tencent.com/business.html（模式 B：品牌+品牌矩阵聚合页）；对照金蝶/用友（模式 C：产品为主，官网承载详情与转化）
-  - **实施状态**：Phase 1 机制（externalUrl 外链）已就绪；Phase 2 产品矩阵页品牌化改造已完成（`30018bf`）；Phase 3 全站对齐核查通过（导航产品入口 / 首页 CTA / 方案页产品组合均已符合品牌化，无需改动）；Phase 4 SEO 机制就绪（standalone 外链 redirect、sitemap 收录 /methodology）；**信任证据**：方法论已 CMS 化并上线 /methodology 页面骨架（methodology 内容模型 + 首页 CTA 指向），案例与量化成果待真实素材补齐
+  - **实施状态**：Phase 1 机制（externalUrl 外链）已就绪；Phase 2 产品矩阵页品牌化改造已完成（`30018bf`）；Phase 3 全站对齐核查通过 + Hero 视觉去产品化（`cbdc7dd`）；Phase 4 SEO 机制就绪（standalone 外链 redirect、sitemap 收录 /methodology）；**外链机制补全**：product 模型补 externalUrl + 详情页 redirect + 矩阵卡「外部站点」徽标（对齐 Google / 字节 / 腾讯对标案例）；**信任证据**：方法论已 CMS 化并上线 /methodology 页面骨架（methodology 内容模型 + 首页 CTA 指向），案例与量化成果待真实素材补齐
 
 ## 项目进度
 
@@ -174,6 +174,7 @@
 - [x] **文档同步 (2026-08-02)**：test-strategy-plan.md 版本 1.5，已标记已实现项，保留真实缺口
 - [x] **官网产品模块定位决策（2026-08-19）**：确认 IHG/字节式品牌矩阵方向（品牌宣传为主 + 产品矩阵聚合页保留 + 成熟产品外链独立站），已写入 CONTEXT.md / README.md；Phase 0 文档化 + Phase 2 矩阵页品牌化改造完成，Phase 3 全站核查通过，Phase 4 SEO 机制就绪
 - [x] **方法论 CMS 化（Phase 4 信任证据·方法论骨架）**：新增 `methodology` 内容模型 + `/methodology` 页面骨架（Hero / 四阶段 / 空态 / CTA），首页 CTA「了解我们的方法论」指向 /methodology，sitemap 收录，视觉基线已生成
+- [x] **产品外链机制补全（对齐 Google / 字节 / 腾讯对标）**：product 模型补 externalUrl 字段 + 企业套装详情页 redirect（复用 standalone 模板）+ 矩阵卡「外部站点」徽标；清理 3 个无引用 AoyagiReisho 字体文件（性能优化）
 - [ ] **信任证据补齐（Phase 4 内容待办）**：首批客户共创案例与可量化成果——需提供真实素材后实施（零编造原则）
 
 ## 技术栈
diff --git a/e2e/visual-snapshots/visual-chromium-desktop/visual-regression.spec.ts/products-fullpage-visual-chromium-desktop.png b/e2e/visual-snapshots/visual-chromium-desktop/visual-regression.spec.ts/products-fullpage-visual-chromium-desktop.png
index 98fa46e..221edc5 100644
Binary files a/e2e/visual-snapshots/visual-chromium-desktop/visual-regression.spec.ts/products-fullpage-visual-chromium-desktop.png and b/e2e/visual-snapshots/visual-chromium-desktop/visual-regression.spec.ts/products-fullpage-visual-chromium-desktop.png differ
diff --git a/e2e/visual-snapshots/visual-chromium-mobile/visual-regression.spec.ts/products-fullpage-visual-chromium-mobile.png b/e2e/visual-snapshots/visual-chromium-mobile/visual-regression.spec.ts/products-fullpage-visual-chromium-mobile.png
index d32c65e..896898a 100644
Binary files a/e2e/visual-snapshots/visual-chromium-mobile/visual-regression.spec.ts/products-fullpage-visual-chromium-mobile.png and b/e2e/visual-snapshots/visual-chromium-mobile/visual-regression.spec.ts/products-fullpage-visual-chromium-mobile.png differ
diff --git a/e2e/visual-snapshots/visual-chromium-tablet/visual-regression.spec.ts/products-fullpage-visual-chromium-tablet.png b/e2e/visual-snapshots/visual-chromium-tablet/visual-regression.spec.ts/products-fullpage-visual-chromium-tablet.png
index 4343a90..947ca25 100644
Binary files a/e2e/visual-snapshots/visual-chromium-tablet/visual-regression.spec.ts/products-fullpage-visual-chromium-tablet.png and b/e2e/visual-snapshots/visual-chromium-tablet/visual-regression.spec.ts/products-fullpage-visual-chromium-tablet.png differ
diff --git a/public/fonts/AoyagiReisho.ttf b/public/fonts/AoyagiReisho.ttf
deleted file mode 100644
index 738dc99..0000000
Binary files a/public/fonts/AoyagiReisho.ttf and /dev/null differ
diff --git a/src/app/(marketing)/products/[id]/page.tsx b/src/app/(marketing)/products/[id]/page.tsx
index 25e1854..ed7c8a9 100644
--- a/src/app/(marketing)/products/[id]/page.tsx
+++ b/src/app/(marketing)/products/[id]/page.tsx
@@ -1,5 +1,5 @@
 import { Metadata } from 'next';
-import { notFound } from 'next/navigation';
+import { notFound, redirect } from 'next/navigation';
 import { COMPANY_INFO } from '@/lib/constants';
 import { getPublishedItemBySlug, getAllPublishedSlugs } from '@/lib/cms/data-server';
 import type { Product } from '@/lib/constants/products';
@@ -36,6 +36,12 @@ export default async function ProductDetailPage({ params }: { params: Promise<{
     notFound();
   }
 
+  // 若配置 externalUrl，则跳转到独立子域名产品站（对齐品牌矩阵「成熟产品外链」机制）
+  const externalUrl = item.data.externalUrl as string | undefined;
+  if (externalUrl) {
+    redirect(externalUrl);
+  }
+
   const product = { ...item.data, title: item.data.title || item.title } as unknown as Product;
   return <ProductDetailContentV3 product={JSON.parse(JSON.stringify(product))} />;
 }
\ No newline at end of file
diff --git a/src/app/(marketing)/products/products-content-v3.test.tsx b/src/app/(marketing)/products/products-content-v3.test.tsx
index b1f7ee1..011cb7c 100644
--- a/src/app/(marketing)/products/products-content-v3.test.tsx
+++ b/src/app/(marketing)/products/products-content-v3.test.tsx
@@ -77,6 +77,7 @@ jest.mock('lucide-react', () => {
   };
   return {
     ArrowRight: mockIcon('arrow-right'),
+    ArrowUpRight: mockIcon('arrow-up-right'),
     Package: mockIcon('package'),
     Cpu: mockIcon('cpu'),
     TrendingUp: mockIcon('trendingup'),
@@ -188,6 +189,7 @@ const mockSpecializedProducts: Product[] = [
     image: '/novavis.png',
     heroThemeId: 'novavis',
     bundle: 'standalone',
+    externalUrl: 'https://novavis.p.novalon.cn',
     scenario: '面向执法机关的离线智能数据分析与资金关系图谱平台',
     metrics: [
       { value: '100万+', label: '秒级处理' },
@@ -253,6 +255,13 @@ describe('ProductsContentV3 - 产品列表页集成测试', () => {
     expect(screen.getAllByText('NovaVis 数据可视化平台').length).toBeGreaterThanOrEqual(1);
   });
 
+  it('should show external-site badge for products with externalUrl', async () => {
+    const { default: ProductsContentV3 } = await import('./products-content-v3');
+    render(<ProductsContentV3 products={allMockProducts} />);
+
+    expect(screen.getAllByText('外部站点').length).toBeGreaterThanOrEqual(1);
+  });
+
   it('should render product capabilities on cards', async () => {
     const { default: ProductsContentV3 } = await import('./products-content-v3');
     render(<ProductsContentV3 products={allMockProducts} />);
diff --git a/src/app/(marketing)/products/products-content-v3.tsx b/src/app/(marketing)/products/products-content-v3.tsx
index 1c87230..1f51403 100644
--- a/src/app/(marketing)/products/products-content-v3.tsx
+++ b/src/app/(marketing)/products/products-content-v3.tsx
@@ -7,7 +7,7 @@ import { EASE_OUT } from '@/components/ui/page-decoration';
 import { Button } from '@/components/ui/button';
 import { StaticLink } from '@/components/ui/static-link';
 import { BentoItem } from '@/components/sections/bento-grid';
-import { ArrowRight, Package, Cpu, TrendingUp, Users, Settings, FileText } from 'lucide-react';
+import { ArrowRight, ArrowUpRight, Package, Cpu, TrendingUp, Users, Settings, FileText } from 'lucide-react';
 import type { Product } from '@/lib/constants/products';
 import { useReducedMotion } from '@/hooks/use-reduced-motion';
 import { cn } from '@/lib/utils';
@@ -176,7 +176,15 @@ function ProductCard({ product, size = 'small' }: { product: Product; size?: 'la
                 {product.title}
               </h3>
             </div>
-            <span className="px-2 py-1 text-xs bg-brand/10 text-brand" aria-hidden="true">{bundleLabel}</span>
+            <div className="flex items-center gap-2 shrink-0">
+              <span className="px-2 py-1 text-xs bg-brand/10 text-brand" aria-hidden="true">{bundleLabel}</span>
+              {isExternal && (
+                <span className="inline-flex items-center gap-1 px-2 py-1 text-xs border border-border-primary text-text-secondary">
+                  <ArrowUpRight className="w-3 h-3" aria-hidden="true" />
+                  外部站点
+                </span>
+              )}
+            </div>
           </div>
 
           <p className={cn('text-text-secondary mb-4 leading-relaxed flex-1', isLarge ? 'text-base' : 'text-sm')}>
diff --git a/src/app/fonts/AoyagiReisho-subset.ttf b/src/app/fonts/AoyagiReisho-subset.ttf
deleted file mode 100644
index 738dc99..0000000
Binary files a/src/app/fonts/AoyagiReisho-subset.ttf and /dev/null differ
diff --git a/src/app/fonts/AoyagiReisho.ttf b/src/app/fonts/AoyagiReisho.ttf
deleted file mode 100644
index 5eefa50..0000000
Binary files a/src/app/fonts/AoyagiReisho.ttf and /dev/null differ
diff --git a/src/lib/cms/content-types.ts b/src/lib/cms/content-types.ts
index b875296..fb426d9 100644
--- a/src/lib/cms/content-types.ts
+++ b/src/lib/cms/content-types.ts
@@ -291,6 +291,12 @@ const productFields: FieldDefinition[] = [
       { label: '已发布', value: '已发布' },
     ],
   },
+  {
+    name: 'externalUrl',
+    type: 'text',
+    label: '外部跳转链接',
+    description: '若设置，访问该产品详情页时将跳转到此 URL（如独立子域名产品）',
+  },
   {
     name: 'overview',
     type: 'textarea',