diff --git a/.changeset/tough-bears-tease.md b/.changeset/tough-bears-tease.md
new file mode 100644
index 00000000000..67fd6a3be8f
--- /dev/null
+++ b/.changeset/tough-bears-tease.md
@@ -0,0 +1,5 @@
+---
+'@tanstack/react-router': patch
+---
+
+Preserve shared route stylesheet links across client navigation by rendering route CSS assets with React stylesheet precedence.
diff --git a/e2e/react-start/css-modules/src/routeTree.gen.ts b/e2e/react-start/css-modules/src/routeTree.gen.ts
index ab5f0b65541..d19ae80e5a0 100644
--- a/e2e/react-start/css-modules/src/routeTree.gen.ts
+++ b/e2e/react-start/css-modules/src/routeTree.gen.ts
@@ -12,8 +12,6 @@ import { Route as rootRouteImport } from './routes/__root'
 import { Route as SassMixinRouteImport } from './routes/sass-mixin'
 import { Route as QuotesRouteImport } from './routes/quotes'
 import { Route as ModulesRouteImport } from './routes/modules'
-import { Route as LazyCssStaticRouteImport } from './routes/lazy-css-static'
-import { Route as LazyCssLazyRouteImport } from './routes/lazy-css-lazy'
 import { Route as IndexRouteImport } from './routes/index'
 
 const SassMixinRoute = SassMixinRouteImport.update({
@@ -31,16 +29,6 @@ const ModulesRoute = ModulesRouteImport.update({
   path: '/modules',
   getParentRoute: () => rootRouteImport,
 } as any)
-const LazyCssStaticRoute = LazyCssStaticRouteImport.update({
-  id: '/lazy-css-static',
-  path: '/lazy-css-static',
-  getParentRoute: () => rootRouteImport,
-} as any)
-const LazyCssLazyRoute = LazyCssLazyRouteImport.update({
-  id: '/lazy-css-lazy',
-  path: '/lazy-css-lazy',
-  getParentRoute: () => rootRouteImport,
-} as any)
 const IndexRoute = IndexRouteImport.update({
   id: '/',
   path: '/',
@@ -49,16 +37,12 @@ const IndexRoute = IndexRouteImport.update({
 
 export interface FileRoutesByFullPath {
   '/': typeof IndexRoute
-  '/lazy-css-lazy': typeof LazyCssLazyRoute
-  '/lazy-css-static': typeof LazyCssStaticRoute
   '/modules': typeof ModulesRoute
   '/quotes': typeof QuotesRoute
   '/sass-mixin': typeof SassMixinRoute
 }
 export interface FileRoutesByTo {
   '/': typeof IndexRoute
-  '/lazy-css-lazy': typeof LazyCssLazyRoute
-  '/lazy-css-static': typeof LazyCssStaticRoute
   '/modules': typeof ModulesRoute
   '/quotes': typeof QuotesRoute
   '/sass-mixin': typeof SassMixinRoute
@@ -66,43 +50,20 @@ export interface FileRoutesByTo {
 export interface FileRoutesById {
   __root__: typeof rootRouteImport
   '/': typeof IndexRoute
-  '/lazy-css-lazy': typeof LazyCssLazyRoute
-  '/lazy-css-static': typeof LazyCssStaticRoute
   '/modules': typeof ModulesRoute
   '/quotes': typeof QuotesRoute
   '/sass-mixin': typeof SassMixinRoute
 }
 export interface FileRouteTypes {
   fileRoutesByFullPath: FileRoutesByFullPath
-  fullPaths:
-    | '/'
-    | '/lazy-css-lazy'
-    | '/lazy-css-static'
-    | '/modules'
-    | '/quotes'
-    | '/sass-mixin'
+  fullPaths: '/' | '/modules' | '/quotes' | '/sass-mixin'
   fileRoutesByTo: FileRoutesByTo
-  to:
-    | '/'
-    | '/lazy-css-lazy'
-    | '/lazy-css-static'
-    | '/modules'
-    | '/quotes'
-    | '/sass-mixin'
-  id:
-    | '__root__'
-    | '/'
-    | '/lazy-css-lazy'
-    | '/lazy-css-static'
-    | '/modules'
-    | '/quotes'
-    | '/sass-mixin'
+  to: '/' | '/modules' | '/quotes' | '/sass-mixin'
+  id: '__root__' | '/' | '/modules' | '/quotes' | '/sass-mixin'
   fileRoutesById: FileRoutesById
 }
 export interface RootRouteChildren {
   IndexRoute: typeof IndexRoute
-  LazyCssLazyRoute: typeof LazyCssLazyRoute
-  LazyCssStaticRoute: typeof LazyCssStaticRoute
   ModulesRoute: typeof ModulesRoute
   QuotesRoute: typeof QuotesRoute
   SassMixinRoute: typeof SassMixinRoute
@@ -131,20 +92,6 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof ModulesRouteImport
       parentRoute: typeof rootRouteImport
     }
-    '/lazy-css-static': {
-      id: '/lazy-css-static'
-      path: '/lazy-css-static'
-      fullPath: '/lazy-css-static'
-      preLoaderRoute: typeof LazyCssStaticRouteImport
-      parentRoute: typeof rootRouteImport
-    }
-    '/lazy-css-lazy': {
-      id: '/lazy-css-lazy'
-      path: '/lazy-css-lazy'
-      fullPath: '/lazy-css-lazy'
-      preLoaderRoute: typeof LazyCssLazyRouteImport
-      parentRoute: typeof rootRouteImport
-    }
     '/': {
       id: '/'
       path: '/'
@@ -157,8 +104,6 @@ declare module '@tanstack/react-router' {
 
 const rootRouteChildren: RootRouteChildren = {
   IndexRoute: IndexRoute,
-  LazyCssLazyRoute: LazyCssLazyRoute,
-  LazyCssStaticRoute: LazyCssStaticRoute,
   ModulesRoute: ModulesRoute,
   QuotesRoute: QuotesRoute,
   SassMixinRoute: SassMixinRoute,
diff --git a/e2e/react-start/css-modules/src/routes/__root.tsx b/e2e/react-start/css-modules/src/routes/__root.tsx
index a383beacecb..d7840bc0c17 100644
--- a/e2e/react-start/css-modules/src/routes/__root.tsx
+++ b/e2e/react-start/css-modules/src/routes/__root.tsx
@@ -62,20 +62,6 @@ function RootComponent() {
           >
             Quoted CSS
           </Link>
-          <Link
-            to="/lazy-css-static"
-            style={{ color: '#0284c7', textDecoration: 'none' }}
-            data-testid="nav-lazy-css-static"
-          >
-            Lazy CSS Static
-          </Link>
-          <Link
-            to="/lazy-css-lazy"
-            style={{ color: '#0284c7', textDecoration: 'none' }}
-            data-testid="nav-lazy-css-lazy"
-          >
-            Lazy CSS Lazy
-          </Link>
         </nav>
 
         <main style={{ padding: '20px' }}>
diff --git a/e2e/react-start/css-modules/src/styles/shared-widget.module.css b/e2e/react-start/css-modules/src/styles/shared-widget.module.css
deleted file mode 100644
index 66f3d679d82..00000000000
--- a/e2e/react-start/css-modules/src/styles/shared-widget.module.css
+++ /dev/null
@@ -1,19 +0,0 @@
-.widget {
-  background: rgb(255, 247, 237);
-  border: 2px solid rgb(249, 115, 22);
-  border-radius: 14px;
-  padding: 20px;
-}
-
-.title {
-  color: rgb(154, 52, 18);
-  font-size: 20px;
-  font-weight: 700;
-  margin-bottom: 8px;
-}
-
-.content {
-  color: rgb(194, 65, 12);
-  font-size: 14px;
-  line-height: 1.5;
-}
diff --git a/e2e/react-start/css-modules/tests/css.prod.spec.ts b/e2e/react-start/css-modules/tests/css.prod.spec.ts
deleted file mode 100644
index 66aeff5700f..00000000000
--- a/e2e/react-start/css-modules/tests/css.prod.spec.ts
+++ /dev/null
@@ -1,140 +0,0 @@
-import { expect } from '@playwright/test'
-import { test } from '@tanstack/router-e2e-utils'
-
-test.skip(process.env.MODE === 'dev', 'Prod-only repro')
-
-test.describe('CSS styles in SSR (prod only)', () => {
-  const buildUrl = (baseURL: string, path: string) => {
-    return baseURL.replace(/\/$/, '') + path
-  }
-
-  test('CSS modules stay applied when navigating from static to lazy route', async ({
-    page,
-    baseURL,
-  }) => {
-    await page.goto(buildUrl(baseURL!, '/lazy-css-static'))
-
-    const widget = page.getByTestId('shared-widget')
-    await expect(widget).toBeVisible()
-
-    const backgroundColor = await widget.evaluate(
-      (el) => getComputedStyle(el).backgroundColor,
-    )
-    expect(backgroundColor).toBe('rgb(255, 247, 237)')
-
-    const borderTopColor = await widget.evaluate(
-      (el) => getComputedStyle(el).borderTopColor,
-    )
-    expect(borderTopColor).toBe('rgb(249, 115, 22)')
-
-    await expect(page.getByTestId('lazy-css-static-hydrated')).toBeVisible()
-
-    await page.getByTestId('nav-lazy-css-lazy').click()
-    await page.waitForURL('**/lazy-css-lazy')
-    await expect(page.getByTestId('lazy-css-lazy-heading')).toBeVisible()
-
-    const lazyWidget = page.getByTestId('shared-widget')
-    await expect(lazyWidget).toBeVisible()
-
-    await expect
-      .poll(
-        () => lazyWidget.evaluate((el) => getComputedStyle(el).backgroundColor),
-        { timeout: 5_000 },
-      )
-      .toBe('rgb(255, 247, 237)')
-  })
-
-  test('CSS modules stay applied when navigating from lazy to static route', async ({
-    page,
-    baseURL,
-  }) => {
-    await page.goto(buildUrl(baseURL!, '/lazy-css-lazy'))
-    await expect(page.getByTestId('lazy-css-lazy-heading')).toBeVisible()
-
-    // Wait for lazy widget to load
-    const lazyWidget = page.getByTestId('shared-widget')
-    await expect(lazyWidget).toBeVisible()
-
-    await expect
-      .poll(
-        () => lazyWidget.evaluate((el) => getComputedStyle(el).backgroundColor),
-        { timeout: 5_000 },
-      )
-      .toBe('rgb(255, 247, 237)')
-
-    // Navigate to static route
-    await page.getByTestId('nav-lazy-css-static').click()
-    await page.waitForURL('**/lazy-css-static')
-
-    const staticWidget = page.getByTestId('shared-widget')
-    await expect(staticWidget).toBeVisible()
-
-    await expect
-      .poll(
-        () =>
-          staticWidget.evaluate((el) => getComputedStyle(el).backgroundColor),
-        { timeout: 5_000 },
-      )
-      .toBe('rgb(255, 247, 237)')
-
-    const borderTopColor = await staticWidget.evaluate(
-      (el) => getComputedStyle(el).borderTopColor,
-    )
-    expect(borderTopColor).toBe('rgb(249, 115, 22)')
-  })
-
-  test('CSS modules applied on direct navigation to lazy route', async ({
-    page,
-    baseURL,
-  }) => {
-    // Navigate directly to the lazy route (cold start, no prior static route)
-    await page.goto(buildUrl(baseURL!, '/lazy-css-lazy'))
-    await expect(page.getByTestId('lazy-css-lazy-heading')).toBeVisible()
-
-    const widget = page.getByTestId('shared-widget')
-    await expect(widget).toBeVisible()
-
-    await expect
-      .poll(
-        () => widget.evaluate((el) => getComputedStyle(el).backgroundColor),
-        { timeout: 5_000 },
-      )
-      .toBe('rgb(255, 247, 237)')
-
-    const borderTopColor = await widget.evaluate(
-      (el) => getComputedStyle(el).borderTopColor,
-    )
-    expect(borderTopColor).toBe('rgb(249, 115, 22)')
-  })
-
-  test('CSS persists after navigating away from lazy and back', async ({
-    page,
-    baseURL,
-  }) => {
-    await page.goto(buildUrl(baseURL!, '/lazy-css-static'))
-    await expect(page.getByTestId('lazy-css-static-hydrated')).toBeVisible()
-
-    // Navigate to lazy
-    await page.getByTestId('nav-lazy-css-lazy').click()
-    await page.waitForURL('**/lazy-css-lazy')
-    await expect(page.getByTestId('shared-widget')).toBeVisible()
-
-    // Navigate away to home
-    await page.getByTestId('nav-home').click()
-    await page.waitForURL(/\/([^/]*)(\/)?($|\?)/)
-
-    // Navigate back to lazy
-    await page.getByTestId('nav-lazy-css-lazy').click()
-    await page.waitForURL('**/lazy-css-lazy')
-
-    const widget = page.getByTestId('shared-widget')
-    await expect(widget).toBeVisible()
-
-    await expect
-      .poll(
-        () => widget.evaluate((el) => getComputedStyle(el).backgroundColor),
-        { timeout: 5_000 },
-      )
-      .toBe('rgb(255, 247, 237)')
-  })
-})
diff --git a/e2e/react-start/rsc/tests/rsc-css-modules.spec.ts b/e2e/react-start/rsc/tests/rsc-css-modules.spec.ts
index 50d461803b5..01a499a70fd 100644
--- a/e2e/react-start/rsc/tests/rsc-css-modules.spec.ts
+++ b/e2e/react-start/rsc/tests/rsc-css-modules.spec.ts
@@ -122,4 +122,33 @@ test.describe('RSC CSS Modules Tests', () => {
     )
     expect(backgroundColor).toBe('rgb(224, 242, 254)')
   })
+
+  test('RSC CSS module styles persist across sibling client-side navigation', async ({
+    page,
+  }) => {
+    await page.goto('/rsc-css-modules')
+    await page.waitForURL('/rsc-css-modules')
+
+    const cssModulesContent = page.getByTestId('rsc-css-modules-content')
+    await expect(cssModulesContent).toBeVisible()
+
+    const initialBackgroundColor = await cssModulesContent.evaluate(
+      (el) => getComputedStyle(el).backgroundColor,
+    )
+    expect(initialBackgroundColor).toBe('rgb(224, 242, 254)')
+
+    await page.getByTestId('nav-global-css').click()
+    await page.waitForURL('/rsc-global-css')
+    await expect(page.getByTestId('rsc-global-css-content')).toBeVisible()
+
+    await page.getByTestId('nav-css-modules').click()
+    await page.waitForURL('/rsc-css-modules')
+
+    await expect(cssModulesContent).toBeVisible()
+
+    const finalBackgroundColor = await cssModulesContent.evaluate(
+      (el) => getComputedStyle(el).backgroundColor,
+    )
+    expect(finalBackgroundColor).toBe('rgb(224, 242, 254)')
+  })
 })
diff --git a/e2e/react-start/start-manifest/src/components/AppShell.tsx b/e2e/react-start/start-manifest/src/components/AppShell.tsx
index 99df40387bc..f504a4fd660 100644
--- a/e2e/react-start/start-manifest/src/components/AppShell.tsx
+++ b/e2e/react-start/start-manifest/src/components/AppShell.tsx
@@ -3,6 +3,10 @@ import styles from '~/styles/root-shell.module.css'
 
 const ROUTES = linkOptions([
   { to: '/', label: 'home' },
+  { to: '/a', label: '/a' },
+  { to: '/b', label: '/b' },
+  { to: '/lazy-css-static', label: '/lazy-css-static' },
+  { to: '/lazy-css-lazy', label: '/lazy-css-lazy' },
   { to: '/r1', label: '/r1' },
   { to: '/r2', label: '/r2' },
   { to: '/shared-a', label: '/shared-a' },
diff --git a/e2e/react-start/start-manifest/src/components/SharedCard.tsx b/e2e/react-start/start-manifest/src/components/SharedCard.tsx
new file mode 100644
index 00000000000..812e02da3d8
--- /dev/null
+++ b/e2e/react-start/start-manifest/src/components/SharedCard.tsx
@@ -0,0 +1,9 @@
+import styles from '~/styles/shared-card.module.css'
+
+export function SharedCard({ label }: { label: string }) {
+  return (
+    <div className={styles.card} data-testid="shared-card">
+      Shared card {label}
+    </div>
+  )
+}
diff --git a/e2e/react-start/css-modules/src/components/shared-widget.tsx b/e2e/react-start/start-manifest/src/components/SharedWidget.tsx
similarity index 76%
rename from e2e/react-start/css-modules/src/components/shared-widget.tsx
rename to e2e/react-start/start-manifest/src/components/SharedWidget.tsx
index 51a3be072c7..0937bd1c7b6 100644
--- a/e2e/react-start/css-modules/src/components/shared-widget.tsx
+++ b/e2e/react-start/start-manifest/src/components/SharedWidget.tsx
@@ -1,4 +1,3 @@
-/// <reference types="vite/client" />
 import styles from '~/styles/shared-widget.module.css'
 
 export function SharedWidget() {
@@ -8,7 +7,7 @@ export function SharedWidget() {
         Shared widget styles
       </div>
       <div className={styles.content} data-testid="shared-widget-content">
-        This widget uses a CSS module shared by a static route and a lazy route.
+        This widget uses CSS shared by a static route and a lazy route.
       </div>
     </div>
   )
diff --git a/e2e/react-start/css-modules/src/components/shared-widget-lazy.tsx b/e2e/react-start/start-manifest/src/components/SharedWidgetLazy.tsx
similarity index 61%
rename from e2e/react-start/css-modules/src/components/shared-widget-lazy.tsx
rename to e2e/react-start/start-manifest/src/components/SharedWidgetLazy.tsx
index 6d9ddce6f5f..5f1f6410a51 100644
--- a/e2e/react-start/css-modules/src/components/shared-widget-lazy.tsx
+++ b/e2e/react-start/start-manifest/src/components/SharedWidgetLazy.tsx
@@ -1,4 +1,4 @@
-import { SharedWidget } from './shared-widget'
+import { SharedWidget } from './SharedWidget'
 
 export default function SharedWidgetLazy() {
   return <SharedWidget />
diff --git a/e2e/react-start/start-manifest/src/routeTree.gen.ts b/e2e/react-start/start-manifest/src/routeTree.gen.ts
index 0571da35921..b7ee0338424 100644
--- a/e2e/react-start/start-manifest/src/routeTree.gen.ts
+++ b/e2e/react-start/start-manifest/src/routeTree.gen.ts
@@ -18,6 +18,10 @@ import { Route as R4RouteImport } from './routes/r4'
 import { Route as R3RouteImport } from './routes/r3'
 import { Route as R2RouteImport } from './routes/r2'
 import { Route as R1RouteImport } from './routes/r1'
+import { Route as LazyCssStaticRouteImport } from './routes/lazy-css-static'
+import { Route as LazyCssLazyRouteImport } from './routes/lazy-css-lazy'
+import { Route as BRouteImport } from './routes/b'
+import { Route as ARouteImport } from './routes/a'
 import { Route as IndexRouteImport } from './routes/index'
 
 const SharedCRoute = SharedCRouteImport.update({
@@ -65,6 +69,26 @@ const R1Route = R1RouteImport.update({
   path: '/r1',
   getParentRoute: () => rootRouteImport,
 } as any)
+const LazyCssStaticRoute = LazyCssStaticRouteImport.update({
+  id: '/lazy-css-static',
+  path: '/lazy-css-static',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const LazyCssLazyRoute = LazyCssLazyRouteImport.update({
+  id: '/lazy-css-lazy',
+  path: '/lazy-css-lazy',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const BRoute = BRouteImport.update({
+  id: '/b',
+  path: '/b',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const ARoute = ARouteImport.update({
+  id: '/a',
+  path: '/a',
+  getParentRoute: () => rootRouteImport,
+} as any)
 const IndexRoute = IndexRouteImport.update({
   id: '/',
   path: '/',
@@ -73,6 +97,10 @@ const IndexRoute = IndexRouteImport.update({
 
 export interface FileRoutesByFullPath {
   '/': typeof IndexRoute
+  '/a': typeof ARoute
+  '/b': typeof BRoute
+  '/lazy-css-lazy': typeof LazyCssLazyRoute
+  '/lazy-css-static': typeof LazyCssStaticRoute
   '/r1': typeof R1Route
   '/r2': typeof R2Route
   '/r3': typeof R3Route
@@ -85,6 +113,10 @@ export interface FileRoutesByFullPath {
 }
 export interface FileRoutesByTo {
   '/': typeof IndexRoute
+  '/a': typeof ARoute
+  '/b': typeof BRoute
+  '/lazy-css-lazy': typeof LazyCssLazyRoute
+  '/lazy-css-static': typeof LazyCssStaticRoute
   '/r1': typeof R1Route
   '/r2': typeof R2Route
   '/r3': typeof R3Route
@@ -98,6 +130,10 @@ export interface FileRoutesByTo {
 export interface FileRoutesById {
   __root__: typeof rootRouteImport
   '/': typeof IndexRoute
+  '/a': typeof ARoute
+  '/b': typeof BRoute
+  '/lazy-css-lazy': typeof LazyCssLazyRoute
+  '/lazy-css-static': typeof LazyCssStaticRoute
   '/r1': typeof R1Route
   '/r2': typeof R2Route
   '/r3': typeof R3Route
@@ -112,6 +148,10 @@ export interface FileRouteTypes {
   fileRoutesByFullPath: FileRoutesByFullPath
   fullPaths:
     | '/'
+    | '/a'
+    | '/b'
+    | '/lazy-css-lazy'
+    | '/lazy-css-static'
     | '/r1'
     | '/r2'
     | '/r3'
@@ -124,6 +164,10 @@ export interface FileRouteTypes {
   fileRoutesByTo: FileRoutesByTo
   to:
     | '/'
+    | '/a'
+    | '/b'
+    | '/lazy-css-lazy'
+    | '/lazy-css-static'
     | '/r1'
     | '/r2'
     | '/r3'
@@ -136,6 +180,10 @@ export interface FileRouteTypes {
   id:
     | '__root__'
     | '/'
+    | '/a'
+    | '/b'
+    | '/lazy-css-lazy'
+    | '/lazy-css-static'
     | '/r1'
     | '/r2'
     | '/r3'
@@ -149,6 +197,10 @@ export interface FileRouteTypes {
 }
 export interface RootRouteChildren {
   IndexRoute: typeof IndexRoute
+  ARoute: typeof ARoute
+  BRoute: typeof BRoute
+  LazyCssLazyRoute: typeof LazyCssLazyRoute
+  LazyCssStaticRoute: typeof LazyCssStaticRoute
   R1Route: typeof R1Route
   R2Route: typeof R2Route
   R3Route: typeof R3Route
@@ -225,6 +277,34 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof R1RouteImport
       parentRoute: typeof rootRouteImport
     }
+    '/lazy-css-static': {
+      id: '/lazy-css-static'
+      path: '/lazy-css-static'
+      fullPath: '/lazy-css-static'
+      preLoaderRoute: typeof LazyCssStaticRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/lazy-css-lazy': {
+      id: '/lazy-css-lazy'
+      path: '/lazy-css-lazy'
+      fullPath: '/lazy-css-lazy'
+      preLoaderRoute: typeof LazyCssLazyRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/b': {
+      id: '/b'
+      path: '/b'
+      fullPath: '/b'
+      preLoaderRoute: typeof BRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/a': {
+      id: '/a'
+      path: '/a'
+      fullPath: '/a'
+      preLoaderRoute: typeof ARouteImport
+      parentRoute: typeof rootRouteImport
+    }
     '/': {
       id: '/'
       path: '/'
@@ -237,6 +317,10 @@ declare module '@tanstack/react-router' {
 
 const rootRouteChildren: RootRouteChildren = {
   IndexRoute: IndexRoute,
+  ARoute: ARoute,
+  BRoute: BRoute,
+  LazyCssLazyRoute: LazyCssLazyRoute,
+  LazyCssStaticRoute: LazyCssStaticRoute,
   R1Route: R1Route,
   R2Route: R2Route,
   R3Route: R3Route,
diff --git a/e2e/react-start/start-manifest/src/routes/a.tsx b/e2e/react-start/start-manifest/src/routes/a.tsx
new file mode 100644
index 00000000000..434803920dc
--- /dev/null
+++ b/e2e/react-start/start-manifest/src/routes/a.tsx
@@ -0,0 +1,17 @@
+import { createFileRoute } from '@tanstack/react-router'
+import { SharedCard } from '~/components/SharedCard'
+import styles from '~/styles/page-a.module.css'
+
+export const Route = createFileRoute('/a')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <section className={styles.page} data-testid="page-a">
+      <h1 className={styles.title}>Route /a</h1>
+      <p>Route /a keeps the shared card styled.</p>
+      <SharedCard label="from /a" />
+    </section>
+  )
+}
diff --git a/e2e/react-start/start-manifest/src/routes/b.tsx b/e2e/react-start/start-manifest/src/routes/b.tsx
new file mode 100644
index 00000000000..a418aeabeb0
--- /dev/null
+++ b/e2e/react-start/start-manifest/src/routes/b.tsx
@@ -0,0 +1,17 @@
+import { createFileRoute } from '@tanstack/react-router'
+import { SharedCard } from '~/components/SharedCard'
+import styles from '~/styles/page-b.module.css'
+
+export const Route = createFileRoute('/b')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <section className={styles.page} data-testid="page-b">
+      <h1 className={styles.title}>Route /b</h1>
+      <p>Route /b should keep the shared card stylesheet after nav.</p>
+      <SharedCard label="from /b" />
+    </section>
+  )
+}
diff --git a/e2e/react-start/css-modules/src/routes/lazy-css-lazy.tsx b/e2e/react-start/start-manifest/src/routes/lazy-css-lazy.tsx
similarity index 89%
rename from e2e/react-start/css-modules/src/routes/lazy-css-lazy.tsx
rename to e2e/react-start/start-manifest/src/routes/lazy-css-lazy.tsx
index 4d147a96519..28cec3aff35 100644
--- a/e2e/react-start/css-modules/src/routes/lazy-css-lazy.tsx
+++ b/e2e/react-start/start-manifest/src/routes/lazy-css-lazy.tsx
@@ -2,7 +2,7 @@ import * as React from 'react'
 import { createFileRoute } from '@tanstack/react-router'
 
 const LazySharedWidget = React.lazy(
-  () => import('~/components/shared-widget-lazy'),
+  () => import('~/components/SharedWidgetLazy'),
 )
 
 export const Route = createFileRoute('/lazy-css-lazy')({
@@ -11,7 +11,7 @@ export const Route = createFileRoute('/lazy-css-lazy')({
 
 function LazyCssLazyRoute() {
   return (
-    <div>
+    <section>
       <h1 data-testid="lazy-css-lazy-heading">Lazy CSS Repro - Lazy Route</h1>
       <p>
         This route renders the same widget through React.lazy so the CSS only
@@ -23,6 +23,6 @@ function LazyCssLazyRoute() {
       >
         <LazySharedWidget />
       </React.Suspense>
-    </div>
+    </section>
   )
 }
diff --git a/e2e/react-start/css-modules/src/routes/lazy-css-static.tsx b/e2e/react-start/start-manifest/src/routes/lazy-css-static.tsx
similarity index 85%
rename from e2e/react-start/css-modules/src/routes/lazy-css-static.tsx
rename to e2e/react-start/start-manifest/src/routes/lazy-css-static.tsx
index c9e3f33a0eb..349e90f33e3 100644
--- a/e2e/react-start/css-modules/src/routes/lazy-css-static.tsx
+++ b/e2e/react-start/start-manifest/src/routes/lazy-css-static.tsx
@@ -1,5 +1,5 @@
 import { ClientOnly, createFileRoute } from '@tanstack/react-router'
-import { SharedWidget } from '~/components/shared-widget'
+import { SharedWidget } from '~/components/SharedWidget'
 
 export const Route = createFileRoute('/lazy-css-static')({
   component: LazyCssStaticRoute,
@@ -7,7 +7,7 @@ export const Route = createFileRoute('/lazy-css-static')({
 
 function LazyCssStaticRoute() {
   return (
-    <div>
+    <section>
       <h1>Lazy CSS Repro - Static Route</h1>
       <p>
         This route statically imports the shared widget so its CSS is present in
@@ -19,6 +19,6 @@ function LazyCssStaticRoute() {
       </ClientOnly>
 
       <SharedWidget />
-    </div>
+    </section>
   )
 }
diff --git a/e2e/react-start/start-manifest/src/styles/page-a.module.css b/e2e/react-start/start-manifest/src/styles/page-a.module.css
new file mode 100644
index 00000000000..7ed4301097f
--- /dev/null
+++ b/e2e/react-start/start-manifest/src/styles/page-a.module.css
@@ -0,0 +1,10 @@
+.page {
+  padding: 1rem;
+  min-height: 12rem;
+  background: rgb(240, 253, 244);
+  border: 4px solid rgb(22, 163, 74);
+}
+
+.title {
+  color: rgb(21, 128, 61);
+}
diff --git a/e2e/react-start/start-manifest/src/styles/page-b.module.css b/e2e/react-start/start-manifest/src/styles/page-b.module.css
new file mode 100644
index 00000000000..93d1d39a014
--- /dev/null
+++ b/e2e/react-start/start-manifest/src/styles/page-b.module.css
@@ -0,0 +1,10 @@
+.page {
+  padding: 1rem;
+  min-height: 12rem;
+  background: rgb(239, 246, 255);
+  border: 4px solid rgb(37, 99, 235);
+}
+
+.title {
+  color: rgb(29, 78, 216);
+}
diff --git a/e2e/react-start/start-manifest/src/styles/shared-card.module.css b/e2e/react-start/start-manifest/src/styles/shared-card.module.css
new file mode 100644
index 00000000000..2aa5a6ac17f
--- /dev/null
+++ b/e2e/react-start/start-manifest/src/styles/shared-card.module.css
@@ -0,0 +1,8 @@
+.card {
+  margin-top: 1rem;
+  padding: 1.5rem;
+  border-radius: 0.75rem;
+  background: rgb(252, 231, 243);
+  border: 2px solid rgb(190, 24, 93);
+  color: rgb(157, 23, 77);
+}
diff --git a/e2e/react-start/start-manifest/src/styles/shared-widget.module.css b/e2e/react-start/start-manifest/src/styles/shared-widget.module.css
new file mode 100644
index 00000000000..ed197cddb07
--- /dev/null
+++ b/e2e/react-start/start-manifest/src/styles/shared-widget.module.css
@@ -0,0 +1,17 @@
+.widget {
+  margin-top: 1rem;
+  padding: 1rem;
+  border-top: 4px solid rgb(249, 115, 22);
+  border-radius: 0.75rem;
+  background: rgb(255, 247, 237);
+}
+
+.title {
+  font-weight: 700;
+  color: rgb(154, 52, 18);
+}
+
+.content {
+  margin-top: 0.5rem;
+  color: rgb(124, 45, 18);
+}
diff --git a/e2e/react-start/start-manifest/tests/start-manifest.spec.ts b/e2e/react-start/start-manifest/tests/start-manifest.spec.ts
index d04d42b2dbd..1767728ac3d 100644
--- a/e2e/react-start/start-manifest/tests/start-manifest.spec.ts
+++ b/e2e/react-start/start-manifest/tests/start-manifest.spec.ts
@@ -5,11 +5,12 @@ import { readdir } from 'node:fs/promises'
 import path from 'node:path'
 import { pathToFileURL } from 'node:url'
 
-test.skip(process.env.MODE === 'dev', 'Prod-only manifest dehydration coverage')
-
 const ROOT_SHELL_COLOR = 'rgb(22, 101, 52)'
 const ROUTE_ONE_COLOR = 'rgb(30, 64, 175)'
 const ROUTE_TWO_COLOR = 'rgb(126, 34, 206)'
+const SHARED_CARD_BG = 'rgb(252, 231, 243)'
+const SHARED_WIDGET_BG = 'rgb(255, 247, 237)'
+const SHARED_WIDGET_BORDER = 'rgb(249, 115, 22)'
 
 const buildUrl = (baseURL: string, pathname: string) =>
   baseURL.replace(/\/$/, '') + pathname
@@ -20,6 +21,12 @@ async function getColor(testId: string, page: Page) {
     .evaluate((element) => getComputedStyle(element).color)
 }
 
+async function getBackgroundColor(testId: string, page: Page) {
+  return page
+    .getByTestId(testId)
+    .evaluate((element) => getComputedStyle(element).backgroundColor)
+}
+
 function getStylesheetHrefsFromHtml(html: string) {
   return Array.from(
     html.matchAll(/<link[^>]+rel="stylesheet"[^>]+href="([^"]+)"/g),
@@ -313,3 +320,134 @@ test('built start manifest preserves shared layout asset identity across sibling
   expect(sharedAAsset).toBe(sharedBAsset)
   expect(sharedBAsset).toBe(sharedCAsset)
 })
+
+test('shared CSS chunk persists across client-side nav', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/a'))
+
+  await expect(page.getByTestId('page-a')).toBeVisible()
+  await expect(page.getByTestId('shared-card')).toBeVisible()
+  await expect
+    .poll(() => getBackgroundColor('shared-card', page))
+    .toBe(SHARED_CARD_BG)
+  await expect(
+    page.locator('head link[rel="stylesheet"][href*="SharedCard"]'),
+  ).toHaveCount(1)
+
+  await page.getByTestId('nav-/b').click()
+  await page.waitForURL('**/b')
+  await expect(page.getByTestId('page-b')).toBeVisible()
+
+  await expect(
+    page.locator('head link[rel="stylesheet"][href*="SharedCard"]'),
+  ).toHaveCount(1)
+  await expect
+    .poll(() => getBackgroundColor('shared-card', page))
+    .toBe(SHARED_CARD_BG)
+})
+
+test('shared widget CSS stays applied when navigating from static to lazy route', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/lazy-css-static'))
+
+  const widget = page.getByTestId('shared-widget')
+  await expect(widget).toBeVisible()
+  expect(await getBackgroundColor('shared-widget', page)).toBe(SHARED_WIDGET_BG)
+  expect(
+    await widget.evaluate(
+      (element) => getComputedStyle(element).borderTopColor,
+    ),
+  ).toBe(SHARED_WIDGET_BORDER)
+
+  await expect(page.getByTestId('lazy-css-static-hydrated')).toBeVisible()
+
+  await page.getByTestId('nav-/lazy-css-lazy').click()
+  await page.waitForURL('**/lazy-css-lazy')
+  await expect(page.getByTestId('lazy-css-lazy-heading')).toBeVisible()
+
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+})
+
+test('shared widget CSS stays applied when navigating from lazy to static route', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/lazy-css-lazy'))
+  await expect(page.getByTestId('lazy-css-lazy-heading')).toBeVisible()
+
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+
+  await page.getByTestId('nav-/lazy-css-static').click()
+  await page.waitForURL('**/lazy-css-static')
+
+  const widget = page.getByTestId('shared-widget')
+  await expect(widget).toBeVisible()
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+  expect(
+    await widget.evaluate(
+      (element) => getComputedStyle(element).borderTopColor,
+    ),
+  ).toBe(SHARED_WIDGET_BORDER)
+})
+
+test('shared widget CSS is applied on direct navigation to lazy route', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/lazy-css-lazy'))
+  await expect(page.getByTestId('lazy-css-lazy-heading')).toBeVisible()
+
+  const widget = page.getByTestId('shared-widget')
+  await expect(widget).toBeVisible()
+
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+  expect(
+    await widget.evaluate(
+      (element) => getComputedStyle(element).borderTopColor,
+    ),
+  ).toBe(SHARED_WIDGET_BORDER)
+})
+
+test('shared widget CSS persists after navigating away from lazy and back', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/lazy-css-static'))
+  await expect(page.getByTestId('lazy-css-static-hydrated')).toBeVisible()
+
+  await page.getByTestId('nav-/lazy-css-lazy').click()
+  await page.waitForURL('**/lazy-css-lazy')
+  await expect(page.getByTestId('shared-widget')).toBeVisible()
+
+  await page.getByTestId('nav-home').click()
+  await page.waitForURL((url) => url.pathname === '/')
+
+  await page.getByTestId('nav-/lazy-css-lazy').click()
+  await page.waitForURL('**/lazy-css-lazy')
+
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+})
diff --git a/e2e/solid-start/start-manifest/package.json b/e2e/solid-start/start-manifest/package.json
new file mode 100644
index 00000000000..1fe9c87c943
--- /dev/null
+++ b/e2e/solid-start/start-manifest/package.json
@@ -0,0 +1,33 @@
+{
+  "name": "tanstack-solid-start-e2e-start-manifest",
+  "private": true,
+  "sideEffects": false,
+  "type": "module",
+  "scripts": {
+    "build": "vite build && tsc --noEmit",
+    "preview": "vite preview",
+    "start": "pnpx srvx --prod -s ../client dist/server/server.js",
+    "test:e2e": "playwright test --project=chromium"
+  },
+  "dependencies": {
+    "@tanstack/solid-router": "workspace:^",
+    "@tanstack/solid-start": "workspace:^",
+    "solid-js": "^1.9.10"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.50.1",
+    "@tanstack/router-e2e-utils": "workspace:^",
+    "@types/node": "^22.10.2",
+    "srvx": "^0.11.9",
+    "typescript": "^6.0.2",
+    "vite": "^8.0.0",
+    "vite-plugin-solid": "^2.11.11"
+  },
+  "nx": {
+    "targets": {
+      "test:e2e": {
+        "parallelism": false
+      }
+    }
+  }
+}
diff --git a/e2e/solid-start/start-manifest/playwright.config.ts b/e2e/solid-start/start-manifest/playwright.config.ts
new file mode 100644
index 00000000000..b9f835c16a6
--- /dev/null
+++ b/e2e/solid-start/start-manifest/playwright.config.ts
@@ -0,0 +1,30 @@
+import { defineConfig, devices } from '@playwright/test'
+import { getTestServerPort } from '@tanstack/router-e2e-utils'
+import packageJson from './package.json' with { type: 'json' }
+
+const PORT = await getTestServerPort(packageJson.name)
+const baseURL = `http://localhost:${PORT}`
+
+export default defineConfig({
+  testDir: './tests',
+  workers: 1,
+  reporter: [['line']],
+
+  use: {
+    baseURL,
+  },
+
+  webServer: {
+    command: `pnpm build && PORT=${PORT} pnpm start`,
+    url: baseURL,
+    reuseExistingServer: !process.env.CI,
+    stdout: 'pipe',
+  },
+
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['Desktop Chrome'] },
+    },
+  ],
+})
diff --git a/e2e/solid-start/start-manifest/src/components/AppShell.tsx b/e2e/solid-start/start-manifest/src/components/AppShell.tsx
new file mode 100644
index 00000000000..cb1101c0c42
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/components/AppShell.tsx
@@ -0,0 +1,38 @@
+/// <reference types="vite/client" />
+import { ClientOnly, Link, Outlet, linkOptions } from '@tanstack/solid-router'
+import styles from '~/styles/root-shell.module.css'
+
+const ROUTES = linkOptions([
+  { to: '/', label: 'home' },
+  { to: '/a', label: '/a' },
+  { to: '/b', label: '/b' },
+  { to: '/lazy-css-static', label: '/lazy-css-static' },
+  { to: '/lazy-css-lazy', label: '/lazy-css-lazy' },
+  { to: '/r1', label: '/r1' },
+  { to: '/r2', label: '/r2' },
+  { to: '/shared-a', label: '/shared-a' },
+])
+
+export function AppShell() {
+  return (
+    <div class={styles.shell}>
+      <nav class={styles.nav}>
+        {ROUTES.map((route) => (
+          <Link {...route} data-testid={`nav-${route.label}`}>
+            {route.label}
+          </Link>
+        ))}
+      </nav>
+
+      <main class={styles.content}>
+        <div class={styles.rootBadge} data-testid="root-shell-marker">
+          Start manifest CSS root shell
+        </div>
+        <ClientOnly>
+          <div data-testid="hydration-marker">hydrated</div>
+        </ClientOnly>
+        <Outlet />
+      </main>
+    </div>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/components/SharedCard.tsx b/e2e/solid-start/start-manifest/src/components/SharedCard.tsx
new file mode 100644
index 00000000000..c82b2b0ea55
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/components/SharedCard.tsx
@@ -0,0 +1,10 @@
+/// <reference types="vite/client" />
+import styles from '~/styles/shared-card.module.css'
+
+export function SharedCard({ label }: { label: string }) {
+  return (
+    <div class={styles.card} data-testid="shared-card">
+      Shared card {label}
+    </div>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/components/SharedNestedLayout.tsx b/e2e/solid-start/start-manifest/src/components/SharedNestedLayout.tsx
new file mode 100644
index 00000000000..5e86c0e8ad4
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/components/SharedNestedLayout.tsx
@@ -0,0 +1,31 @@
+/// <reference types="vite/client" />
+import { Link, linkOptions } from '@tanstack/solid-router'
+import styles from '~/styles/shared-layout.module.css'
+
+const ROUTES = linkOptions([
+  { to: '/shared-a', label: '/shared-a' },
+  { to: '/shared-b', label: '/shared-b' },
+  { to: '/shared-c', label: '/shared-c' },
+])
+
+export function SharedNestedLayout(props: { children?: any }) {
+  return (
+    <section class={styles.layout} data-testid="shared-layout-shell">
+      <div class={styles.heading} data-testid="shared-layout-heading">
+        Shared nested layout CSS
+      </div>
+
+      <nav class={styles.nav}>
+        {ROUTES.map((route) => (
+          <Link {...route} data-testid={`nav-${route.label}`}>
+            {route.label}
+          </Link>
+        ))}
+      </nav>
+
+      <div class={styles.body} data-testid="shared-layout-copy">
+        {props.children}
+      </div>
+    </section>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/components/SharedWidget.tsx b/e2e/solid-start/start-manifest/src/components/SharedWidget.tsx
new file mode 100644
index 00000000000..9074d5b2b0c
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/components/SharedWidget.tsx
@@ -0,0 +1,15 @@
+/// <reference types="vite/client" />
+import styles from '~/styles/shared-widget.module.css'
+
+export function SharedWidget() {
+  return (
+    <div class={styles.widget} data-testid="shared-widget">
+      <div class={styles.title} data-testid="shared-widget-title">
+        Shared widget styles
+      </div>
+      <div class={styles.content} data-testid="shared-widget-content">
+        This widget uses CSS shared by a static route and a lazy route.
+      </div>
+    </div>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/components/SharedWidgetLazy.tsx b/e2e/solid-start/start-manifest/src/components/SharedWidgetLazy.tsx
new file mode 100644
index 00000000000..5f1f6410a51
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/components/SharedWidgetLazy.tsx
@@ -0,0 +1,5 @@
+import { SharedWidget } from './SharedWidget'
+
+export default function SharedWidgetLazy() {
+  return <SharedWidget />
+}
diff --git a/e2e/solid-start/start-manifest/src/routeTree.gen.ts b/e2e/solid-start/start-manifest/src/routeTree.gen.ts
new file mode 100644
index 00000000000..982f80b1502
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routeTree.gen.ts
@@ -0,0 +1,345 @@
+/* eslint-disable */
+
+// @ts-nocheck
+
+// noinspection JSUnusedGlobalSymbols
+
+// This file was automatically generated by TanStack Router.
+// You should NOT make any changes in this file as it will be overwritten.
+// Additionally, you should also exclude this file from your linter and/or formatter to prevent it from being checked or modified.
+
+import { Route as rootRouteImport } from './routes/__root'
+import { Route as SharedCRouteImport } from './routes/shared-c'
+import { Route as SharedBRouteImport } from './routes/shared-b'
+import { Route as SharedARouteImport } from './routes/shared-a'
+import { Route as R6RouteImport } from './routes/r6'
+import { Route as R5RouteImport } from './routes/r5'
+import { Route as R4RouteImport } from './routes/r4'
+import { Route as R3RouteImport } from './routes/r3'
+import { Route as R2RouteImport } from './routes/r2'
+import { Route as R1RouteImport } from './routes/r1'
+import { Route as LazyCssStaticRouteImport } from './routes/lazy-css-static'
+import { Route as LazyCssLazyRouteImport } from './routes/lazy-css-lazy'
+import { Route as BRouteImport } from './routes/b'
+import { Route as ARouteImport } from './routes/a'
+import { Route as IndexRouteImport } from './routes/index'
+
+const SharedCRoute = SharedCRouteImport.update({
+  id: '/shared-c',
+  path: '/shared-c',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const SharedBRoute = SharedBRouteImport.update({
+  id: '/shared-b',
+  path: '/shared-b',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const SharedARoute = SharedARouteImport.update({
+  id: '/shared-a',
+  path: '/shared-a',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const R6Route = R6RouteImport.update({
+  id: '/r6',
+  path: '/r6',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const R5Route = R5RouteImport.update({
+  id: '/r5',
+  path: '/r5',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const R4Route = R4RouteImport.update({
+  id: '/r4',
+  path: '/r4',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const R3Route = R3RouteImport.update({
+  id: '/r3',
+  path: '/r3',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const R2Route = R2RouteImport.update({
+  id: '/r2',
+  path: '/r2',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const R1Route = R1RouteImport.update({
+  id: '/r1',
+  path: '/r1',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const LazyCssStaticRoute = LazyCssStaticRouteImport.update({
+  id: '/lazy-css-static',
+  path: '/lazy-css-static',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const LazyCssLazyRoute = LazyCssLazyRouteImport.update({
+  id: '/lazy-css-lazy',
+  path: '/lazy-css-lazy',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const BRoute = BRouteImport.update({
+  id: '/b',
+  path: '/b',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const ARoute = ARouteImport.update({
+  id: '/a',
+  path: '/a',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const IndexRoute = IndexRouteImport.update({
+  id: '/',
+  path: '/',
+  getParentRoute: () => rootRouteImport,
+} as any)
+
+export interface FileRoutesByFullPath {
+  '/': typeof IndexRoute
+  '/a': typeof ARoute
+  '/b': typeof BRoute
+  '/lazy-css-lazy': typeof LazyCssLazyRoute
+  '/lazy-css-static': typeof LazyCssStaticRoute
+  '/r1': typeof R1Route
+  '/r2': typeof R2Route
+  '/r3': typeof R3Route
+  '/r4': typeof R4Route
+  '/r5': typeof R5Route
+  '/r6': typeof R6Route
+  '/shared-a': typeof SharedARoute
+  '/shared-b': typeof SharedBRoute
+  '/shared-c': typeof SharedCRoute
+}
+export interface FileRoutesByTo {
+  '/': typeof IndexRoute
+  '/a': typeof ARoute
+  '/b': typeof BRoute
+  '/lazy-css-lazy': typeof LazyCssLazyRoute
+  '/lazy-css-static': typeof LazyCssStaticRoute
+  '/r1': typeof R1Route
+  '/r2': typeof R2Route
+  '/r3': typeof R3Route
+  '/r4': typeof R4Route
+  '/r5': typeof R5Route
+  '/r6': typeof R6Route
+  '/shared-a': typeof SharedARoute
+  '/shared-b': typeof SharedBRoute
+  '/shared-c': typeof SharedCRoute
+}
+export interface FileRoutesById {
+  __root__: typeof rootRouteImport
+  '/': typeof IndexRoute
+  '/a': typeof ARoute
+  '/b': typeof BRoute
+  '/lazy-css-lazy': typeof LazyCssLazyRoute
+  '/lazy-css-static': typeof LazyCssStaticRoute
+  '/r1': typeof R1Route
+  '/r2': typeof R2Route
+  '/r3': typeof R3Route
+  '/r4': typeof R4Route
+  '/r5': typeof R5Route
+  '/r6': typeof R6Route
+  '/shared-a': typeof SharedARoute
+  '/shared-b': typeof SharedBRoute
+  '/shared-c': typeof SharedCRoute
+}
+export interface FileRouteTypes {
+  fileRoutesByFullPath: FileRoutesByFullPath
+  fullPaths:
+    | '/'
+    | '/a'
+    | '/b'
+    | '/lazy-css-lazy'
+    | '/lazy-css-static'
+    | '/r1'
+    | '/r2'
+    | '/r3'
+    | '/r4'
+    | '/r5'
+    | '/r6'
+    | '/shared-a'
+    | '/shared-b'
+    | '/shared-c'
+  fileRoutesByTo: FileRoutesByTo
+  to:
+    | '/'
+    | '/a'
+    | '/b'
+    | '/lazy-css-lazy'
+    | '/lazy-css-static'
+    | '/r1'
+    | '/r2'
+    | '/r3'
+    | '/r4'
+    | '/r5'
+    | '/r6'
+    | '/shared-a'
+    | '/shared-b'
+    | '/shared-c'
+  id:
+    | '__root__'
+    | '/'
+    | '/a'
+    | '/b'
+    | '/lazy-css-lazy'
+    | '/lazy-css-static'
+    | '/r1'
+    | '/r2'
+    | '/r3'
+    | '/r4'
+    | '/r5'
+    | '/r6'
+    | '/shared-a'
+    | '/shared-b'
+    | '/shared-c'
+  fileRoutesById: FileRoutesById
+}
+export interface RootRouteChildren {
+  IndexRoute: typeof IndexRoute
+  ARoute: typeof ARoute
+  BRoute: typeof BRoute
+  LazyCssLazyRoute: typeof LazyCssLazyRoute
+  LazyCssStaticRoute: typeof LazyCssStaticRoute
+  R1Route: typeof R1Route
+  R2Route: typeof R2Route
+  R3Route: typeof R3Route
+  R4Route: typeof R4Route
+  R5Route: typeof R5Route
+  R6Route: typeof R6Route
+  SharedARoute: typeof SharedARoute
+  SharedBRoute: typeof SharedBRoute
+  SharedCRoute: typeof SharedCRoute
+}
+
+declare module '@tanstack/solid-router' {
+  interface FileRoutesByPath {
+    '/shared-c': {
+      id: '/shared-c'
+      path: '/shared-c'
+      fullPath: '/shared-c'
+      preLoaderRoute: typeof SharedCRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/shared-b': {
+      id: '/shared-b'
+      path: '/shared-b'
+      fullPath: '/shared-b'
+      preLoaderRoute: typeof SharedBRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/shared-a': {
+      id: '/shared-a'
+      path: '/shared-a'
+      fullPath: '/shared-a'
+      preLoaderRoute: typeof SharedARouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/r6': {
+      id: '/r6'
+      path: '/r6'
+      fullPath: '/r6'
+      preLoaderRoute: typeof R6RouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/r5': {
+      id: '/r5'
+      path: '/r5'
+      fullPath: '/r5'
+      preLoaderRoute: typeof R5RouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/r4': {
+      id: '/r4'
+      path: '/r4'
+      fullPath: '/r4'
+      preLoaderRoute: typeof R4RouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/r3': {
+      id: '/r3'
+      path: '/r3'
+      fullPath: '/r3'
+      preLoaderRoute: typeof R3RouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/r2': {
+      id: '/r2'
+      path: '/r2'
+      fullPath: '/r2'
+      preLoaderRoute: typeof R2RouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/r1': {
+      id: '/r1'
+      path: '/r1'
+      fullPath: '/r1'
+      preLoaderRoute: typeof R1RouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/lazy-css-static': {
+      id: '/lazy-css-static'
+      path: '/lazy-css-static'
+      fullPath: '/lazy-css-static'
+      preLoaderRoute: typeof LazyCssStaticRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/lazy-css-lazy': {
+      id: '/lazy-css-lazy'
+      path: '/lazy-css-lazy'
+      fullPath: '/lazy-css-lazy'
+      preLoaderRoute: typeof LazyCssLazyRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/b': {
+      id: '/b'
+      path: '/b'
+      fullPath: '/b'
+      preLoaderRoute: typeof BRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/a': {
+      id: '/a'
+      path: '/a'
+      fullPath: '/a'
+      preLoaderRoute: typeof ARouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/': {
+      id: '/'
+      path: '/'
+      fullPath: '/'
+      preLoaderRoute: typeof IndexRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+  }
+}
+
+const rootRouteChildren: RootRouteChildren = {
+  IndexRoute: IndexRoute,
+  ARoute: ARoute,
+  BRoute: BRoute,
+  LazyCssLazyRoute: LazyCssLazyRoute,
+  LazyCssStaticRoute: LazyCssStaticRoute,
+  R1Route: R1Route,
+  R2Route: R2Route,
+  R3Route: R3Route,
+  R4Route: R4Route,
+  R5Route: R5Route,
+  R6Route: R6Route,
+  SharedARoute: SharedARoute,
+  SharedBRoute: SharedBRoute,
+  SharedCRoute: SharedCRoute,
+}
+export const routeTree = rootRouteImport
+  ._addFileChildren(rootRouteChildren)
+  ._addFileTypes<FileRouteTypes>()
+
+import type { getRouter } from './router.tsx'
+import type { createStart } from '@tanstack/solid-start'
+declare module '@tanstack/solid-start' {
+  interface Register {
+    ssr: true
+    router: Awaited<ReturnType<typeof getRouter>>
+  }
+}
diff --git a/e2e/solid-start/start-manifest/src/router.tsx b/e2e/solid-start/start-manifest/src/router.tsx
new file mode 100644
index 00000000000..801095c695d
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/router.tsx
@@ -0,0 +1,18 @@
+import { createRouter } from '@tanstack/solid-router'
+import { routeTree } from './routeTree.gen'
+
+export const getRouter = () => {
+  const router = createRouter({
+    routeTree,
+    scrollRestoration: true,
+    defaultPreload: 'intent',
+  })
+
+  return router
+}
+
+declare module '@tanstack/solid-router' {
+  interface Register {
+    router: ReturnType<typeof getRouter>
+  }
+}
diff --git a/e2e/solid-start/start-manifest/src/routes/__root.tsx b/e2e/solid-start/start-manifest/src/routes/__root.tsx
new file mode 100644
index 00000000000..90935e12367
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/__root.tsx
@@ -0,0 +1,29 @@
+import { HeadContent, Scripts, createRootRoute } from '@tanstack/solid-router'
+import { HydrationScript } from 'solid-js/web'
+import { AppShell } from '~/components/AppShell'
+
+export const Route = createRootRoute({
+  head: () => ({
+    meta: [
+      { charSet: 'utf-8' },
+      { name: 'viewport', content: 'width=device-width, initial-scale=1' },
+      { title: 'TanStack Start Manifest Bloat E2E' },
+    ],
+  }),
+  component: RootComponent,
+})
+
+function RootComponent() {
+  return (
+    <html lang="en">
+      <head>
+        <HydrationScript />
+        <HeadContent />
+      </head>
+      <body>
+        <AppShell />
+        <Scripts />
+      </body>
+    </html>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/routes/a.tsx b/e2e/solid-start/start-manifest/src/routes/a.tsx
new file mode 100644
index 00000000000..d9cda03adcb
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/a.tsx
@@ -0,0 +1,18 @@
+/// <reference types="vite/client" />
+import { createFileRoute } from '@tanstack/solid-router'
+import { SharedCard } from '~/components/SharedCard'
+import styles from '~/styles/page-a.module.css'
+
+export const Route = createFileRoute('/a')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <section class={styles.page} data-testid="page-a">
+      <h1 class={styles.title}>Route /a</h1>
+      <p>Route /a keeps the shared card styled.</p>
+      <SharedCard label="from /a" />
+    </section>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/routes/b.tsx b/e2e/solid-start/start-manifest/src/routes/b.tsx
new file mode 100644
index 00000000000..fd17811d56d
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/b.tsx
@@ -0,0 +1,18 @@
+/// <reference types="vite/client" />
+import { createFileRoute } from '@tanstack/solid-router'
+import { SharedCard } from '~/components/SharedCard'
+import styles from '~/styles/page-b.module.css'
+
+export const Route = createFileRoute('/b')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <section class={styles.page} data-testid="page-b">
+      <h1 class={styles.title}>Route /b</h1>
+      <p>Route /b should keep the shared card stylesheet after nav.</p>
+      <SharedCard label="from /b" />
+    </section>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/routes/index.tsx b/e2e/solid-start/start-manifest/src/routes/index.tsx
new file mode 100644
index 00000000000..e61358aa7b4
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/index.tsx
@@ -0,0 +1,16 @@
+import { createFileRoute } from '@tanstack/solid-router'
+
+export const Route = createFileRoute('/')({
+  component: HomeRoute,
+})
+
+function HomeRoute() {
+  return (
+    <section>
+      <h1>Start manifest fixture</h1>
+      <p data-testid="home-copy">
+        Use this page to navigate between CSS module routes.
+      </p>
+    </section>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/routes/lazy-css-lazy.tsx b/e2e/solid-start/start-manifest/src/routes/lazy-css-lazy.tsx
new file mode 100644
index 00000000000..dc2bb845bfd
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/lazy-css-lazy.tsx
@@ -0,0 +1,26 @@
+import { createFileRoute } from '@tanstack/solid-router'
+import { Suspense, lazy } from 'solid-js'
+
+const LazySharedWidget = lazy(() => import('~/components/SharedWidgetLazy'))
+
+export const Route = createFileRoute('/lazy-css-lazy')({
+  component: LazyCssLazyRoute,
+})
+
+function LazyCssLazyRoute() {
+  return (
+    <section>
+      <h1 data-testid="lazy-css-lazy-heading">Lazy CSS Repro - Lazy Route</h1>
+      <p>
+        This route renders the same widget through a lazy component so the CSS
+        only exists behind a dynamic import boundary.
+      </p>
+
+      <Suspense
+        fallback={<div data-testid="shared-widget-loading">Loading...</div>}
+      >
+        <LazySharedWidget />
+      </Suspense>
+    </section>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/routes/lazy-css-static.tsx b/e2e/solid-start/start-manifest/src/routes/lazy-css-static.tsx
new file mode 100644
index 00000000000..1112c8ae900
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/lazy-css-static.tsx
@@ -0,0 +1,24 @@
+import { ClientOnly, createFileRoute } from '@tanstack/solid-router'
+import { SharedWidget } from '~/components/SharedWidget'
+
+export const Route = createFileRoute('/lazy-css-static')({
+  component: LazyCssStaticRoute,
+})
+
+function LazyCssStaticRoute() {
+  return (
+    <section>
+      <h1>Lazy CSS Repro - Static Route</h1>
+      <p>
+        This route statically imports the shared widget so its CSS is present in
+        the SSR head.
+      </p>
+
+      <ClientOnly>
+        <div data-testid="lazy-css-static-hydrated">hydrated</div>
+      </ClientOnly>
+
+      <SharedWidget />
+    </section>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/routes/r1.tsx b/e2e/solid-start/start-manifest/src/routes/r1.tsx
new file mode 100644
index 00000000000..d3979ecaf11
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/r1.tsx
@@ -0,0 +1,18 @@
+/// <reference types="vite/client" />
+import { createFileRoute } from '@tanstack/solid-router'
+import styles from '~/styles/route-one.module.css'
+
+export const Route = createFileRoute('/r1')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <section>
+      <h1>Route /r1</h1>
+      <div class={styles.card} data-testid="route-r1-card">
+        Route /r1 CSS module styling
+      </div>
+    </section>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/routes/r2.tsx b/e2e/solid-start/start-manifest/src/routes/r2.tsx
new file mode 100644
index 00000000000..836257cd2eb
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/r2.tsx
@@ -0,0 +1,18 @@
+/// <reference types="vite/client" />
+import { createFileRoute } from '@tanstack/solid-router'
+import styles from '~/styles/route-two.module.css'
+
+export const Route = createFileRoute('/r2')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <section>
+      <h1>Route /r2</h1>
+      <div class={styles.card} data-testid="route-r2-card">
+        Route /r2 CSS module styling
+      </div>
+    </section>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/routes/r3.tsx b/e2e/solid-start/start-manifest/src/routes/r3.tsx
new file mode 100644
index 00000000000..178a4b2a41d
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/r3.tsx
@@ -0,0 +1,5 @@
+import { createFileRoute } from '@tanstack/solid-router'
+
+export const Route = createFileRoute('/r3')({
+  component: () => <div>Route /r3</div>,
+})
diff --git a/e2e/solid-start/start-manifest/src/routes/r4.tsx b/e2e/solid-start/start-manifest/src/routes/r4.tsx
new file mode 100644
index 00000000000..c625e4961ea
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/r4.tsx
@@ -0,0 +1,5 @@
+import { createFileRoute } from '@tanstack/solid-router'
+
+export const Route = createFileRoute('/r4')({
+  component: () => <div>Route /r4</div>,
+})
diff --git a/e2e/solid-start/start-manifest/src/routes/r5.tsx b/e2e/solid-start/start-manifest/src/routes/r5.tsx
new file mode 100644
index 00000000000..d4f5dcb95f2
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/r5.tsx
@@ -0,0 +1,5 @@
+import { createFileRoute } from '@tanstack/solid-router'
+
+export const Route = createFileRoute('/r5')({
+  component: () => <div>Route /r5</div>,
+})
diff --git a/e2e/solid-start/start-manifest/src/routes/r6.tsx b/e2e/solid-start/start-manifest/src/routes/r6.tsx
new file mode 100644
index 00000000000..235ff13538e
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/r6.tsx
@@ -0,0 +1,5 @@
+import { createFileRoute } from '@tanstack/solid-router'
+
+export const Route = createFileRoute('/r6')({
+  component: () => <div>Route /r6</div>,
+})
diff --git a/e2e/solid-start/start-manifest/src/routes/shared-a.tsx b/e2e/solid-start/start-manifest/src/routes/shared-a.tsx
new file mode 100644
index 00000000000..ccb94d1e469
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/shared-a.tsx
@@ -0,0 +1,14 @@
+import { createFileRoute } from '@tanstack/solid-router'
+import { SharedNestedLayout } from '~/components/SharedNestedLayout'
+
+export const Route = createFileRoute('/shared-a')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <SharedNestedLayout>
+      <div data-testid="shared-a-card">Shared route A</div>
+    </SharedNestedLayout>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/routes/shared-b.tsx b/e2e/solid-start/start-manifest/src/routes/shared-b.tsx
new file mode 100644
index 00000000000..ced02fcf126
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/shared-b.tsx
@@ -0,0 +1,14 @@
+import { createFileRoute } from '@tanstack/solid-router'
+import { SharedNestedLayout } from '~/components/SharedNestedLayout'
+
+export const Route = createFileRoute('/shared-b')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <SharedNestedLayout>
+      <div data-testid="shared-b-card">Shared route B</div>
+    </SharedNestedLayout>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/routes/shared-c.tsx b/e2e/solid-start/start-manifest/src/routes/shared-c.tsx
new file mode 100644
index 00000000000..9b8ea62f3f1
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/routes/shared-c.tsx
@@ -0,0 +1,14 @@
+import { createFileRoute } from '@tanstack/solid-router'
+import { SharedNestedLayout } from '~/components/SharedNestedLayout'
+
+export const Route = createFileRoute('/shared-c')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <SharedNestedLayout>
+      <div data-testid="shared-c-card">Shared route C</div>
+    </SharedNestedLayout>
+  )
+}
diff --git a/e2e/solid-start/start-manifest/src/styles/page-a.module.css b/e2e/solid-start/start-manifest/src/styles/page-a.module.css
new file mode 100644
index 00000000000..7ed4301097f
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/styles/page-a.module.css
@@ -0,0 +1,10 @@
+.page {
+  padding: 1rem;
+  min-height: 12rem;
+  background: rgb(240, 253, 244);
+  border: 4px solid rgb(22, 163, 74);
+}
+
+.title {
+  color: rgb(21, 128, 61);
+}
diff --git a/e2e/solid-start/start-manifest/src/styles/page-b.module.css b/e2e/solid-start/start-manifest/src/styles/page-b.module.css
new file mode 100644
index 00000000000..93d1d39a014
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/styles/page-b.module.css
@@ -0,0 +1,10 @@
+.page {
+  padding: 1rem;
+  min-height: 12rem;
+  background: rgb(239, 246, 255);
+  border: 4px solid rgb(37, 99, 235);
+}
+
+.title {
+  color: rgb(29, 78, 216);
+}
diff --git a/e2e/solid-start/start-manifest/src/styles/root-shell.module.css b/e2e/solid-start/start-manifest/src/styles/root-shell.module.css
new file mode 100644
index 00000000000..e7bece86643
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/styles/root-shell.module.css
@@ -0,0 +1,37 @@
+.shell {
+  font-family:
+    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+  min-height: 100vh;
+  background: rgb(248, 250, 252);
+  color: rgb(15, 23, 42);
+}
+
+.nav {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.75rem;
+  padding: 1rem;
+  border-bottom: 1px solid rgb(226, 232, 240);
+  background: white;
+}
+
+.nav a {
+  color: rgb(37, 99, 235);
+  text-decoration: none;
+}
+
+.content {
+  max-width: 760px;
+  margin: 0 auto;
+  padding: 1.5rem 1rem 3rem;
+}
+
+.rootBadge {
+  display: inline-block;
+  margin-bottom: 1rem;
+  padding: 0.375rem 0.75rem;
+  border-radius: 9999px;
+  background: rgb(220, 252, 231);
+  color: rgb(22, 101, 52);
+  font-weight: 700;
+}
diff --git a/e2e/solid-start/start-manifest/src/styles/route-one.module.css b/e2e/solid-start/start-manifest/src/styles/route-one.module.css
new file mode 100644
index 00000000000..623d03e6a34
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/styles/route-one.module.css
@@ -0,0 +1,7 @@
+.card {
+  padding: 1rem;
+  border-radius: 0.75rem;
+  background: rgb(239, 246, 255);
+  color: rgb(30, 64, 175);
+  border: 2px solid rgb(96, 165, 250);
+}
diff --git a/e2e/solid-start/start-manifest/src/styles/route-two.module.css b/e2e/solid-start/start-manifest/src/styles/route-two.module.css
new file mode 100644
index 00000000000..66ed3557119
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/styles/route-two.module.css
@@ -0,0 +1,7 @@
+.card {
+  padding: 1rem;
+  border-radius: 0.75rem;
+  background: rgb(250, 245, 255);
+  color: rgb(126, 34, 206);
+  border: 2px solid rgb(192, 132, 252);
+}
diff --git a/e2e/solid-start/start-manifest/src/styles/shared-card.module.css b/e2e/solid-start/start-manifest/src/styles/shared-card.module.css
new file mode 100644
index 00000000000..2aa5a6ac17f
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/styles/shared-card.module.css
@@ -0,0 +1,8 @@
+.card {
+  margin-top: 1rem;
+  padding: 1.5rem;
+  border-radius: 0.75rem;
+  background: rgb(252, 231, 243);
+  border: 2px solid rgb(190, 24, 93);
+  color: rgb(157, 23, 77);
+}
diff --git a/e2e/solid-start/start-manifest/src/styles/shared-layout.module.css b/e2e/solid-start/start-manifest/src/styles/shared-layout.module.css
new file mode 100644
index 00000000000..6025a1da066
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/styles/shared-layout.module.css
@@ -0,0 +1,16 @@
+.layout {
+  padding: 1rem;
+  border-radius: 0.75rem;
+  background: rgb(255, 251, 235);
+  border: 2px solid rgb(245, 158, 11);
+}
+
+.heading {
+  color: rgb(180, 83, 9);
+  font-weight: 700;
+  margin-bottom: 0.5rem;
+}
+
+.body {
+  color: rgb(146, 64, 14);
+}
diff --git a/e2e/solid-start/start-manifest/src/styles/shared-widget.module.css b/e2e/solid-start/start-manifest/src/styles/shared-widget.module.css
new file mode 100644
index 00000000000..ed197cddb07
--- /dev/null
+++ b/e2e/solid-start/start-manifest/src/styles/shared-widget.module.css
@@ -0,0 +1,17 @@
+.widget {
+  margin-top: 1rem;
+  padding: 1rem;
+  border-top: 4px solid rgb(249, 115, 22);
+  border-radius: 0.75rem;
+  background: rgb(255, 247, 237);
+}
+
+.title {
+  font-weight: 700;
+  color: rgb(154, 52, 18);
+}
+
+.content {
+  margin-top: 0.5rem;
+  color: rgb(124, 45, 18);
+}
diff --git a/e2e/solid-start/start-manifest/tests/start-manifest.spec.ts b/e2e/solid-start/start-manifest/tests/start-manifest.spec.ts
new file mode 100644
index 00000000000..23244db8287
--- /dev/null
+++ b/e2e/solid-start/start-manifest/tests/start-manifest.spec.ts
@@ -0,0 +1,453 @@
+import { expect } from '@playwright/test'
+import { test } from '@tanstack/router-e2e-utils'
+import type { Page } from '@playwright/test'
+import { readdir } from 'node:fs/promises'
+import path from 'node:path'
+import { pathToFileURL } from 'node:url'
+
+const ROOT_SHELL_COLOR = 'rgb(22, 101, 52)'
+const ROUTE_ONE_COLOR = 'rgb(30, 64, 175)'
+const ROUTE_TWO_COLOR = 'rgb(126, 34, 206)'
+const SHARED_CARD_BG = 'rgb(252, 231, 243)'
+const SHARED_WIDGET_BG = 'rgb(255, 247, 237)'
+const SHARED_WIDGET_BORDER = 'rgb(249, 115, 22)'
+
+const buildUrl = (baseURL: string, pathname: string) =>
+  baseURL.replace(/\/$/, '') + pathname
+
+async function getColor(testId: string, page: Page) {
+  return page
+    .getByTestId(testId)
+    .evaluate((element) => getComputedStyle(element).color)
+}
+
+async function getBackgroundColor(testId: string, page: Page) {
+  return page
+    .getByTestId(testId)
+    .evaluate((element) => getComputedStyle(element).backgroundColor)
+}
+
+function getStylesheetHrefsFromHtml(html: string) {
+  return Array.from(
+    html.matchAll(/<link[^>]+rel="stylesheet"[^>]+href="([^"]+)"/g),
+    (match) => match[1]!,
+  )
+}
+
+async function getHeadStylesheetHrefs(page: Page) {
+  return page.locator('head link[rel="stylesheet"]').evaluateAll((links) => {
+    return links.map(
+      (link) => (link as HTMLLinkElement).getAttribute('href') || '',
+    )
+  })
+}
+
+function countMatchingStylesheetHrefs(hrefs: Array<string>, pattern: string) {
+  return hrefs.filter((href) => href.includes(pattern)).length
+}
+
+async function loadBuiltStartManifest() {
+  const serverDir = path.resolve(import.meta.dirname, '../dist/server/assets')
+  const entries = await readdir(serverDir)
+  const manifestFile = entries.find(
+    (entry) =>
+      entry.startsWith('_tanstack-start-manifest_v-') && entry.endsWith('.js'),
+  )
+
+  expect(manifestFile).toBeTruthy()
+
+  const moduleUrl = `${pathToFileURL(path.join(serverDir, manifestFile!)).href}?t=${Date.now()}`
+  const manifestModule = await import(moduleUrl)
+
+  return manifestModule.tsrStartManifest() as {
+    routes: Record<string, { assets?: Array<unknown> }>
+  }
+}
+
+async function expectDirectEntry({
+  page,
+  request,
+  baseURL,
+  pathname,
+  expectedVisibleTestId,
+  expectedAbsentTestId,
+  expectedStylesheetPattern,
+  unexpectedStylesheetPattern,
+  expectedColorTestId,
+  expectedColor,
+}: {
+  page: Page
+  request: {
+    get: (url: string) => Promise<{ ok(): boolean; text(): Promise<string> }>
+  }
+  baseURL: string
+  pathname: string
+  expectedVisibleTestId: string
+  expectedAbsentTestId: string
+  expectedStylesheetPattern: string
+  unexpectedStylesheetPattern: string
+  expectedColorTestId: string
+  expectedColor: string
+}) {
+  const url = buildUrl(baseURL, pathname)
+  const response = await request.get(url)
+  const ssrHtml = await response.text()
+
+  expect(response.ok()).toBe(true)
+  expect(ssrHtml).toContain('root-shell-marker')
+  expect(ssrHtml).toContain(expectedVisibleTestId)
+  expect(ssrHtml).not.toContain(expectedAbsentTestId)
+
+  const stylesheetLinks = getStylesheetHrefsFromHtml(ssrHtml)
+
+  expect(
+    countMatchingStylesheetHrefs(stylesheetLinks, expectedStylesheetPattern),
+  ).toBe(1)
+  expect(
+    countMatchingStylesheetHrefs(stylesheetLinks, unexpectedStylesheetPattern),
+  ).toBe(0)
+  expect(stylesheetLinks).toHaveLength(2)
+
+  await page.goto(url)
+  await expect(page.getByTestId(expectedVisibleTestId)).toBeVisible()
+  await expect(page.getByTestId('hydration-marker')).toBeVisible()
+
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return countMatchingStylesheetHrefs(hrefs, expectedStylesheetPattern)
+    })
+    .toBe(1)
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return countMatchingStylesheetHrefs(hrefs, unexpectedStylesheetPattern)
+    })
+    .toBe(0)
+
+  await expect
+    .poll(() => getColor('root-shell-marker', page))
+    .toBe(ROOT_SHELL_COLOR)
+  await expect
+    .poll(() => getColor(expectedColorTestId, page))
+    .toBe(expectedColor)
+}
+
+test('SSR and client navigation keep CSS module styles correct without hydration errors', async ({
+  page,
+  baseURL,
+  request,
+}) => {
+  const routeOneUrl = buildUrl(baseURL!, '/r1')
+  const response = await request.get(routeOneUrl)
+  const ssrHtml = await response.text()
+
+  expect(response.ok()).toBe(true)
+  expect(ssrHtml).toContain('root-shell-marker')
+  expect(ssrHtml).toContain('route-r1-card')
+  expect(ssrHtml).not.toContain('route-r2-card')
+
+  const stylesheetLinks = getStylesheetHrefsFromHtml(ssrHtml)
+
+  expect(countMatchingStylesheetHrefs(stylesheetLinks, 'r1-')).toBe(1)
+  expect(countMatchingStylesheetHrefs(stylesheetLinks, 'r2-')).toBe(0)
+  expect(stylesheetLinks).toHaveLength(2)
+
+  await page.goto(routeOneUrl)
+
+  await expect(page.getByTestId('route-r1-card')).toBeVisible()
+  await expect(page.getByTestId('hydration-marker')).toBeVisible()
+
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return countMatchingStylesheetHrefs(hrefs, 'r1-')
+    })
+    .toBe(1)
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return countMatchingStylesheetHrefs(hrefs, 'r2-')
+    })
+    .toBe(0)
+
+  await expect
+    .poll(() => getColor('root-shell-marker', page))
+    .toBe(ROOT_SHELL_COLOR)
+  await expect.poll(() => getColor('route-r1-card', page)).toBe(ROUTE_ONE_COLOR)
+
+  await page.getByTestId('nav-/r2').click()
+  await page.waitForURL('**/r2')
+  await expect(page.getByTestId('route-r2-card')).toBeVisible()
+
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return countMatchingStylesheetHrefs(hrefs, 'r2-')
+    })
+    .toBe(1)
+
+  await expect
+    .poll(() => getColor('root-shell-marker', page))
+    .toBe(ROOT_SHELL_COLOR)
+  await expect.poll(() => getColor('route-r2-card', page)).toBe(ROUTE_TWO_COLOR)
+
+  await page.getByTestId('nav-/r1').click()
+  await page.waitForURL('**/r1')
+  await expect(page.getByTestId('route-r1-card')).toBeVisible()
+
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return countMatchingStylesheetHrefs(hrefs, 'r1-')
+    })
+    .toBe(1)
+
+  await expect
+    .poll(() => getColor('root-shell-marker', page))
+    .toBe(ROOT_SHELL_COLOR)
+  await expect.poll(() => getColor('route-r1-card', page)).toBe(ROUTE_ONE_COLOR)
+})
+
+test('direct SSR entry on /r2 only includes its stylesheet and hydrates cleanly', async ({
+  page,
+  baseURL,
+  request,
+}) => {
+  await expectDirectEntry({
+    page,
+    request,
+    baseURL: baseURL!,
+    pathname: '/r2',
+    expectedVisibleTestId: 'route-r2-card',
+    expectedAbsentTestId: 'route-r1-card',
+    expectedStylesheetPattern: 'r2-',
+    unexpectedStylesheetPattern: 'r1-',
+    expectedColorTestId: 'route-r2-card',
+    expectedColor: ROUTE_TWO_COLOR,
+  })
+})
+
+test('direct SSR entries on different route-css pages stay isolated', async ({
+  page,
+  baseURL,
+  request,
+}) => {
+  await expectDirectEntry({
+    page,
+    request,
+    baseURL: baseURL!,
+    pathname: '/r2',
+    expectedVisibleTestId: 'route-r2-card',
+    expectedAbsentTestId: 'route-r1-card',
+    expectedStylesheetPattern: 'r2-',
+    unexpectedStylesheetPattern: 'r1-',
+    expectedColorTestId: 'route-r2-card',
+    expectedColor: ROUTE_TWO_COLOR,
+  })
+
+  await expectDirectEntry({
+    page,
+    request,
+    baseURL: baseURL!,
+    pathname: '/r1',
+    expectedVisibleTestId: 'route-r1-card',
+    expectedAbsentTestId: 'route-r2-card',
+    expectedStylesheetPattern: 'r1-',
+    unexpectedStylesheetPattern: 'r2-',
+    expectedColorTestId: 'route-r1-card',
+    expectedColor: ROUTE_ONE_COLOR,
+  })
+})
+
+test('home route only renders the root stylesheet and no route-specific CSS', async ({
+  page,
+  baseURL,
+  request,
+}) => {
+  const homeUrl = buildUrl(baseURL!, '/')
+  const response = await request.get(homeUrl)
+  const ssrHtml = await response.text()
+
+  expect(response.ok()).toBe(true)
+  expect(ssrHtml).toContain('root-shell-marker')
+  expect(ssrHtml).toContain('home-copy')
+  expect(ssrHtml).not.toContain('route-r1-card')
+  expect(ssrHtml).not.toContain('route-r2-card')
+
+  const stylesheetLinks = getStylesheetHrefsFromHtml(ssrHtml)
+
+  expect(countMatchingStylesheetHrefs(stylesheetLinks, 'r1-')).toBe(0)
+  expect(countMatchingStylesheetHrefs(stylesheetLinks, 'r2-')).toBe(0)
+  expect(stylesheetLinks).toHaveLength(1)
+
+  await page.goto(homeUrl)
+  await expect(page.getByTestId('home-copy')).toBeVisible()
+  await expect(page.getByTestId('hydration-marker')).toBeVisible()
+
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return countMatchingStylesheetHrefs(hrefs, 'r1-')
+    })
+    .toBe(0)
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return countMatchingStylesheetHrefs(hrefs, 'r2-')
+    })
+    .toBe(0)
+
+  await expect
+    .poll(() => getColor('root-shell-marker', page))
+    .toBe(ROOT_SHELL_COLOR)
+})
+
+test('built start manifest preserves shared layout asset identity across sibling routes', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/shared-a'))
+  await expect(page.getByTestId('shared-a-card')).toBeVisible()
+
+  const manifest = await loadBuiltStartManifest()
+
+  const sharedAAsset = manifest.routes['/shared-a']?.assets?.[0]
+  const sharedBAsset = manifest.routes['/shared-b']?.assets?.[0]
+  const sharedCAsset = manifest.routes['/shared-c']?.assets?.[0]
+
+  expect(sharedAAsset).toBeTruthy()
+  expect(sharedAAsset).toBe(sharedBAsset)
+  expect(sharedBAsset).toBe(sharedCAsset)
+})
+
+test('shared CSS chunk persists across client-side nav', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/a'))
+
+  await expect(page.getByTestId('page-a')).toBeVisible()
+  await expect(page.getByTestId('shared-card')).toBeVisible()
+  await expect
+    .poll(() => getBackgroundColor('shared-card', page))
+    .toBe(SHARED_CARD_BG)
+  await expect(
+    page.locator('head link[rel="stylesheet"][href*="SharedCard"]'),
+  ).toHaveCount(1)
+
+  await page.getByTestId('nav-/b').click()
+  await page.waitForURL('**/b')
+  await expect(page.getByTestId('page-b')).toBeVisible()
+
+  await expect(
+    page.locator('head link[rel="stylesheet"][href*="SharedCard"]'),
+  ).toHaveCount(1)
+  await expect
+    .poll(() => getBackgroundColor('shared-card', page))
+    .toBe(SHARED_CARD_BG)
+})
+
+test('shared widget CSS stays applied when navigating from static to lazy route', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/lazy-css-static'))
+
+  const widget = page.getByTestId('shared-widget')
+  await expect(widget).toBeVisible()
+  expect(await getBackgroundColor('shared-widget', page)).toBe(SHARED_WIDGET_BG)
+  expect(
+    await widget.evaluate(
+      (element) => getComputedStyle(element).borderTopColor,
+    ),
+  ).toBe(SHARED_WIDGET_BORDER)
+
+  await expect(page.getByTestId('lazy-css-static-hydrated')).toBeVisible()
+
+  await page.getByTestId('nav-/lazy-css-lazy').click()
+  await page.waitForURL('**/lazy-css-lazy')
+  await expect(page.getByTestId('lazy-css-lazy-heading')).toBeVisible()
+
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+})
+
+test('shared widget CSS stays applied when navigating from lazy to static route', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/lazy-css-lazy'))
+  await expect(page.getByTestId('lazy-css-lazy-heading')).toBeVisible()
+
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+
+  await page.getByTestId('nav-/lazy-css-static').click()
+  await page.waitForURL('**/lazy-css-static')
+
+  const widget = page.getByTestId('shared-widget')
+  await expect(widget).toBeVisible()
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+  expect(
+    await widget.evaluate(
+      (element) => getComputedStyle(element).borderTopColor,
+    ),
+  ).toBe(SHARED_WIDGET_BORDER)
+})
+
+test('shared widget CSS is applied on direct navigation to lazy route', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/lazy-css-lazy'))
+  await expect(page.getByTestId('lazy-css-lazy-heading')).toBeVisible()
+
+  const widget = page.getByTestId('shared-widget')
+  await expect(widget).toBeVisible()
+
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+  expect(
+    await widget.evaluate(
+      (element) => getComputedStyle(element).borderTopColor,
+    ),
+  ).toBe(SHARED_WIDGET_BORDER)
+})
+
+test('shared widget CSS persists after navigating away from lazy and back', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/lazy-css-static'))
+  await expect(page.getByTestId('lazy-css-static-hydrated')).toBeVisible()
+
+  await page.getByTestId('nav-/lazy-css-lazy').click()
+  await page.waitForURL('**/lazy-css-lazy')
+  await expect(page.getByTestId('shared-widget')).toBeVisible()
+
+  await page.getByTestId('nav-home').click()
+  await page.waitForURL(/\/([^/]*)(\/)?($|\?)/)
+
+  await page.getByTestId('nav-/lazy-css-lazy').click()
+  await page.waitForURL('**/lazy-css-lazy')
+
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+})
diff --git a/e2e/solid-start/start-manifest/tsconfig.json b/e2e/solid-start/start-manifest/tsconfig.json
new file mode 100644
index 00000000000..76cf3401fa4
--- /dev/null
+++ b/e2e/solid-start/start-manifest/tsconfig.json
@@ -0,0 +1,23 @@
+{
+  "include": ["**/*.ts", "**/*.tsx"],
+  "compilerOptions": {
+    "strict": true,
+    "esModuleInterop": true,
+    "jsx": "preserve",
+    "jsxImportSource": "solid-js",
+    "module": "ESNext",
+    "moduleResolution": "Bundler",
+    "lib": ["DOM", "DOM.Iterable", "ES2022"],
+    "isolatedModules": true,
+    "resolveJsonModule": true,
+    "skipLibCheck": true,
+    "target": "ES2024",
+    "allowJs": true,
+    "forceConsistentCasingInFileNames": true,
+    "paths": {
+      "~/*": ["./src/*"]
+    },
+    "noEmit": true,
+    "types": ["vite/client"]
+  }
+}
diff --git a/e2e/solid-start/start-manifest/vite.config.ts b/e2e/solid-start/start-manifest/vite.config.ts
new file mode 100644
index 00000000000..896fa284f1b
--- /dev/null
+++ b/e2e/solid-start/start-manifest/vite.config.ts
@@ -0,0 +1,13 @@
+import { tanstackStart } from '@tanstack/solid-start/plugin/vite'
+import { defineConfig } from 'vite'
+import viteSolid from 'vite-plugin-solid'
+
+export default defineConfig({
+  server: {
+    port: 3000,
+  },
+  resolve: {
+    tsconfigPaths: true,
+  },
+  plugins: [tanstackStart({ srcDirectory: 'src' }), viteSolid({ ssr: true })],
+})
diff --git a/e2e/vue-start/start-manifest/package.json b/e2e/vue-start/start-manifest/package.json
new file mode 100644
index 00000000000..ffe9b414c9a
--- /dev/null
+++ b/e2e/vue-start/start-manifest/package.json
@@ -0,0 +1,33 @@
+{
+  "name": "tanstack-vue-start-e2e-start-manifest",
+  "private": true,
+  "sideEffects": false,
+  "type": "module",
+  "scripts": {
+    "build": "vite build && tsc --noEmit",
+    "preview": "vite preview",
+    "start": "pnpx srvx --prod -s ../client dist/server/server.js",
+    "test:e2e": "playwright test --project=chromium"
+  },
+  "dependencies": {
+    "@tanstack/vue-router": "workspace:^",
+    "@tanstack/vue-start": "workspace:^",
+    "vue": "^3.5.16"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.50.1",
+    "@tanstack/router-e2e-utils": "workspace:^",
+    "@types/node": "^22.10.2",
+    "@vitejs/plugin-vue-jsx": "^5.1.5",
+    "srvx": "^0.11.9",
+    "typescript": "^6.0.2",
+    "vite": "^8.0.0"
+  },
+  "nx": {
+    "targets": {
+      "test:e2e": {
+        "parallelism": false
+      }
+    }
+  }
+}
diff --git a/e2e/vue-start/start-manifest/playwright.config.ts b/e2e/vue-start/start-manifest/playwright.config.ts
new file mode 100644
index 00000000000..b9f835c16a6
--- /dev/null
+++ b/e2e/vue-start/start-manifest/playwright.config.ts
@@ -0,0 +1,30 @@
+import { defineConfig, devices } from '@playwright/test'
+import { getTestServerPort } from '@tanstack/router-e2e-utils'
+import packageJson from './package.json' with { type: 'json' }
+
+const PORT = await getTestServerPort(packageJson.name)
+const baseURL = `http://localhost:${PORT}`
+
+export default defineConfig({
+  testDir: './tests',
+  workers: 1,
+  reporter: [['line']],
+
+  use: {
+    baseURL,
+  },
+
+  webServer: {
+    command: `pnpm build && PORT=${PORT} pnpm start`,
+    url: baseURL,
+    reuseExistingServer: !process.env.CI,
+    stdout: 'pipe',
+  },
+
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['Desktop Chrome'] },
+    },
+  ],
+})
diff --git a/e2e/vue-start/start-manifest/src/components/AppShell.tsx b/e2e/vue-start/start-manifest/src/components/AppShell.tsx
new file mode 100644
index 00000000000..0d57b2d0e34
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/components/AppShell.tsx
@@ -0,0 +1,38 @@
+/// <reference types="vite/client" />
+import { ClientOnly, Link, Outlet, linkOptions } from '@tanstack/vue-router'
+import styles from '~/styles/root-shell.module.css'
+
+const ROUTES = linkOptions([
+  { to: '/', label: 'home' },
+  { to: '/a', label: '/a' },
+  { to: '/b', label: '/b' },
+  { to: '/lazy-css-static', label: '/lazy-css-static' },
+  { to: '/lazy-css-lazy', label: '/lazy-css-lazy' },
+  { to: '/r1', label: '/r1' },
+  { to: '/r2', label: '/r2' },
+  { to: '/shared-a', label: '/shared-a' },
+])
+
+export function AppShell() {
+  return (
+    <div class={styles.shell}>
+      <nav class={styles.nav}>
+        {ROUTES.map((route) => (
+          <Link key={route.to} {...route} data-testid={`nav-${route.label}`}>
+            {route.label}
+          </Link>
+        ))}
+      </nav>
+
+      <main class={styles.content}>
+        <div class={styles.rootBadge} data-testid="root-shell-marker">
+          Start manifest CSS root shell
+        </div>
+        <ClientOnly>
+          <div data-testid="hydration-marker">hydrated</div>
+        </ClientOnly>
+        <Outlet />
+      </main>
+    </div>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/components/SharedCard.tsx b/e2e/vue-start/start-manifest/src/components/SharedCard.tsx
new file mode 100644
index 00000000000..c82b2b0ea55
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/components/SharedCard.tsx
@@ -0,0 +1,10 @@
+/// <reference types="vite/client" />
+import styles from '~/styles/shared-card.module.css'
+
+export function SharedCard({ label }: { label: string }) {
+  return (
+    <div class={styles.card} data-testid="shared-card">
+      Shared card {label}
+    </div>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/components/SharedNestedLayout.tsx b/e2e/vue-start/start-manifest/src/components/SharedNestedLayout.tsx
new file mode 100644
index 00000000000..9c1f63f2f97
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/components/SharedNestedLayout.tsx
@@ -0,0 +1,34 @@
+/// <reference types="vite/client" />
+import { Link, linkOptions } from '@tanstack/vue-router'
+import { defineComponent } from 'vue'
+import styles from '~/styles/shared-layout.module.css'
+
+const ROUTES = linkOptions([
+  { to: '/shared-a', label: '/shared-a' },
+  { to: '/shared-b', label: '/shared-b' },
+  { to: '/shared-c', label: '/shared-c' },
+])
+
+export const SharedNestedLayout = defineComponent({
+  setup(_, { slots }) {
+    return () => (
+      <section class={styles.layout} data-testid="shared-layout-shell">
+        <div class={styles.heading} data-testid="shared-layout-heading">
+          Shared nested layout CSS
+        </div>
+
+        <nav class={styles.nav}>
+          {ROUTES.map((route) => (
+            <Link key={route.to} {...route} data-testid={`nav-${route.label}`}>
+              {route.label}
+            </Link>
+          ))}
+        </nav>
+
+        <div class={styles.body} data-testid="shared-layout-copy">
+          {slots.default?.()}
+        </div>
+      </section>
+    )
+  },
+})
diff --git a/e2e/vue-start/start-manifest/src/components/SharedWidget.tsx b/e2e/vue-start/start-manifest/src/components/SharedWidget.tsx
new file mode 100644
index 00000000000..9074d5b2b0c
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/components/SharedWidget.tsx
@@ -0,0 +1,15 @@
+/// <reference types="vite/client" />
+import styles from '~/styles/shared-widget.module.css'
+
+export function SharedWidget() {
+  return (
+    <div class={styles.widget} data-testid="shared-widget">
+      <div class={styles.title} data-testid="shared-widget-title">
+        Shared widget styles
+      </div>
+      <div class={styles.content} data-testid="shared-widget-content">
+        This widget uses CSS shared by a static route and a lazy route.
+      </div>
+    </div>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/components/SharedWidgetLazy.tsx b/e2e/vue-start/start-manifest/src/components/SharedWidgetLazy.tsx
new file mode 100644
index 00000000000..5f1f6410a51
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/components/SharedWidgetLazy.tsx
@@ -0,0 +1,5 @@
+import { SharedWidget } from './SharedWidget'
+
+export default function SharedWidgetLazy() {
+  return <SharedWidget />
+}
diff --git a/e2e/vue-start/start-manifest/src/routeTree.gen.ts b/e2e/vue-start/start-manifest/src/routeTree.gen.ts
new file mode 100644
index 00000000000..357d3be62be
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routeTree.gen.ts
@@ -0,0 +1,345 @@
+/* eslint-disable */
+
+// @ts-nocheck
+
+// noinspection JSUnusedGlobalSymbols
+
+// This file was automatically generated by TanStack Router.
+// You should NOT make any changes in this file as it will be overwritten.
+// Additionally, you should also exclude this file from your linter and/or formatter to prevent it from being checked or modified.
+
+import { Route as rootRouteImport } from './routes/__root'
+import { Route as SharedCRouteImport } from './routes/shared-c'
+import { Route as SharedBRouteImport } from './routes/shared-b'
+import { Route as SharedARouteImport } from './routes/shared-a'
+import { Route as R6RouteImport } from './routes/r6'
+import { Route as R5RouteImport } from './routes/r5'
+import { Route as R4RouteImport } from './routes/r4'
+import { Route as R3RouteImport } from './routes/r3'
+import { Route as R2RouteImport } from './routes/r2'
+import { Route as R1RouteImport } from './routes/r1'
+import { Route as LazyCssStaticRouteImport } from './routes/lazy-css-static'
+import { Route as LazyCssLazyRouteImport } from './routes/lazy-css-lazy'
+import { Route as BRouteImport } from './routes/b'
+import { Route as ARouteImport } from './routes/a'
+import { Route as IndexRouteImport } from './routes/index'
+
+const SharedCRoute = SharedCRouteImport.update({
+  id: '/shared-c',
+  path: '/shared-c',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const SharedBRoute = SharedBRouteImport.update({
+  id: '/shared-b',
+  path: '/shared-b',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const SharedARoute = SharedARouteImport.update({
+  id: '/shared-a',
+  path: '/shared-a',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const R6Route = R6RouteImport.update({
+  id: '/r6',
+  path: '/r6',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const R5Route = R5RouteImport.update({
+  id: '/r5',
+  path: '/r5',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const R4Route = R4RouteImport.update({
+  id: '/r4',
+  path: '/r4',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const R3Route = R3RouteImport.update({
+  id: '/r3',
+  path: '/r3',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const R2Route = R2RouteImport.update({
+  id: '/r2',
+  path: '/r2',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const R1Route = R1RouteImport.update({
+  id: '/r1',
+  path: '/r1',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const LazyCssStaticRoute = LazyCssStaticRouteImport.update({
+  id: '/lazy-css-static',
+  path: '/lazy-css-static',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const LazyCssLazyRoute = LazyCssLazyRouteImport.update({
+  id: '/lazy-css-lazy',
+  path: '/lazy-css-lazy',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const BRoute = BRouteImport.update({
+  id: '/b',
+  path: '/b',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const ARoute = ARouteImport.update({
+  id: '/a',
+  path: '/a',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const IndexRoute = IndexRouteImport.update({
+  id: '/',
+  path: '/',
+  getParentRoute: () => rootRouteImport,
+} as any)
+
+export interface FileRoutesByFullPath {
+  '/': typeof IndexRoute
+  '/a': typeof ARoute
+  '/b': typeof BRoute
+  '/lazy-css-lazy': typeof LazyCssLazyRoute
+  '/lazy-css-static': typeof LazyCssStaticRoute
+  '/r1': typeof R1Route
+  '/r2': typeof R2Route
+  '/r3': typeof R3Route
+  '/r4': typeof R4Route
+  '/r5': typeof R5Route
+  '/r6': typeof R6Route
+  '/shared-a': typeof SharedARoute
+  '/shared-b': typeof SharedBRoute
+  '/shared-c': typeof SharedCRoute
+}
+export interface FileRoutesByTo {
+  '/': typeof IndexRoute
+  '/a': typeof ARoute
+  '/b': typeof BRoute
+  '/lazy-css-lazy': typeof LazyCssLazyRoute
+  '/lazy-css-static': typeof LazyCssStaticRoute
+  '/r1': typeof R1Route
+  '/r2': typeof R2Route
+  '/r3': typeof R3Route
+  '/r4': typeof R4Route
+  '/r5': typeof R5Route
+  '/r6': typeof R6Route
+  '/shared-a': typeof SharedARoute
+  '/shared-b': typeof SharedBRoute
+  '/shared-c': typeof SharedCRoute
+}
+export interface FileRoutesById {
+  __root__: typeof rootRouteImport
+  '/': typeof IndexRoute
+  '/a': typeof ARoute
+  '/b': typeof BRoute
+  '/lazy-css-lazy': typeof LazyCssLazyRoute
+  '/lazy-css-static': typeof LazyCssStaticRoute
+  '/r1': typeof R1Route
+  '/r2': typeof R2Route
+  '/r3': typeof R3Route
+  '/r4': typeof R4Route
+  '/r5': typeof R5Route
+  '/r6': typeof R6Route
+  '/shared-a': typeof SharedARoute
+  '/shared-b': typeof SharedBRoute
+  '/shared-c': typeof SharedCRoute
+}
+export interface FileRouteTypes {
+  fileRoutesByFullPath: FileRoutesByFullPath
+  fullPaths:
+    | '/'
+    | '/a'
+    | '/b'
+    | '/lazy-css-lazy'
+    | '/lazy-css-static'
+    | '/r1'
+    | '/r2'
+    | '/r3'
+    | '/r4'
+    | '/r5'
+    | '/r6'
+    | '/shared-a'
+    | '/shared-b'
+    | '/shared-c'
+  fileRoutesByTo: FileRoutesByTo
+  to:
+    | '/'
+    | '/a'
+    | '/b'
+    | '/lazy-css-lazy'
+    | '/lazy-css-static'
+    | '/r1'
+    | '/r2'
+    | '/r3'
+    | '/r4'
+    | '/r5'
+    | '/r6'
+    | '/shared-a'
+    | '/shared-b'
+    | '/shared-c'
+  id:
+    | '__root__'
+    | '/'
+    | '/a'
+    | '/b'
+    | '/lazy-css-lazy'
+    | '/lazy-css-static'
+    | '/r1'
+    | '/r2'
+    | '/r3'
+    | '/r4'
+    | '/r5'
+    | '/r6'
+    | '/shared-a'
+    | '/shared-b'
+    | '/shared-c'
+  fileRoutesById: FileRoutesById
+}
+export interface RootRouteChildren {
+  IndexRoute: typeof IndexRoute
+  ARoute: typeof ARoute
+  BRoute: typeof BRoute
+  LazyCssLazyRoute: typeof LazyCssLazyRoute
+  LazyCssStaticRoute: typeof LazyCssStaticRoute
+  R1Route: typeof R1Route
+  R2Route: typeof R2Route
+  R3Route: typeof R3Route
+  R4Route: typeof R4Route
+  R5Route: typeof R5Route
+  R6Route: typeof R6Route
+  SharedARoute: typeof SharedARoute
+  SharedBRoute: typeof SharedBRoute
+  SharedCRoute: typeof SharedCRoute
+}
+
+declare module '@tanstack/vue-router' {
+  interface FileRoutesByPath {
+    '/shared-c': {
+      id: '/shared-c'
+      path: '/shared-c'
+      fullPath: '/shared-c'
+      preLoaderRoute: typeof SharedCRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/shared-b': {
+      id: '/shared-b'
+      path: '/shared-b'
+      fullPath: '/shared-b'
+      preLoaderRoute: typeof SharedBRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/shared-a': {
+      id: '/shared-a'
+      path: '/shared-a'
+      fullPath: '/shared-a'
+      preLoaderRoute: typeof SharedARouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/r6': {
+      id: '/r6'
+      path: '/r6'
+      fullPath: '/r6'
+      preLoaderRoute: typeof R6RouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/r5': {
+      id: '/r5'
+      path: '/r5'
+      fullPath: '/r5'
+      preLoaderRoute: typeof R5RouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/r4': {
+      id: '/r4'
+      path: '/r4'
+      fullPath: '/r4'
+      preLoaderRoute: typeof R4RouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/r3': {
+      id: '/r3'
+      path: '/r3'
+      fullPath: '/r3'
+      preLoaderRoute: typeof R3RouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/r2': {
+      id: '/r2'
+      path: '/r2'
+      fullPath: '/r2'
+      preLoaderRoute: typeof R2RouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/r1': {
+      id: '/r1'
+      path: '/r1'
+      fullPath: '/r1'
+      preLoaderRoute: typeof R1RouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/lazy-css-static': {
+      id: '/lazy-css-static'
+      path: '/lazy-css-static'
+      fullPath: '/lazy-css-static'
+      preLoaderRoute: typeof LazyCssStaticRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/lazy-css-lazy': {
+      id: '/lazy-css-lazy'
+      path: '/lazy-css-lazy'
+      fullPath: '/lazy-css-lazy'
+      preLoaderRoute: typeof LazyCssLazyRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/b': {
+      id: '/b'
+      path: '/b'
+      fullPath: '/b'
+      preLoaderRoute: typeof BRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/a': {
+      id: '/a'
+      path: '/a'
+      fullPath: '/a'
+      preLoaderRoute: typeof ARouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/': {
+      id: '/'
+      path: '/'
+      fullPath: '/'
+      preLoaderRoute: typeof IndexRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+  }
+}
+
+const rootRouteChildren: RootRouteChildren = {
+  IndexRoute: IndexRoute,
+  ARoute: ARoute,
+  BRoute: BRoute,
+  LazyCssLazyRoute: LazyCssLazyRoute,
+  LazyCssStaticRoute: LazyCssStaticRoute,
+  R1Route: R1Route,
+  R2Route: R2Route,
+  R3Route: R3Route,
+  R4Route: R4Route,
+  R5Route: R5Route,
+  R6Route: R6Route,
+  SharedARoute: SharedARoute,
+  SharedBRoute: SharedBRoute,
+  SharedCRoute: SharedCRoute,
+}
+export const routeTree = rootRouteImport
+  ._addFileChildren(rootRouteChildren)
+  ._addFileTypes<FileRouteTypes>()
+
+import type { getRouter } from './router.tsx'
+import type { createStart } from '@tanstack/vue-start'
+declare module '@tanstack/vue-start' {
+  interface Register {
+    ssr: true
+    router: Awaited<ReturnType<typeof getRouter>>
+  }
+}
diff --git a/e2e/vue-start/start-manifest/src/router.tsx b/e2e/vue-start/start-manifest/src/router.tsx
new file mode 100644
index 00000000000..d7cd8e82847
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/router.tsx
@@ -0,0 +1,18 @@
+import { createRouter } from '@tanstack/vue-router'
+import { routeTree } from './routeTree.gen'
+
+export const getRouter = () => {
+  const router = createRouter({
+    routeTree,
+    scrollRestoration: true,
+    defaultPreload: 'intent',
+  })
+
+  return router
+}
+
+declare module '@tanstack/vue-router' {
+  interface Register {
+    router: ReturnType<typeof getRouter>
+  }
+}
diff --git a/e2e/vue-start/start-manifest/src/routes/__root.tsx b/e2e/vue-start/start-manifest/src/routes/__root.tsx
new file mode 100644
index 00000000000..b62d37c0f05
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/__root.tsx
@@ -0,0 +1,35 @@
+/// <reference types="vite/client" />
+import {
+  Body,
+  HeadContent,
+  Html,
+  Scripts,
+  createRootRoute,
+} from '@tanstack/vue-router'
+import { AppShell } from '~/components/AppShell'
+
+export const Route = createRootRoute({
+  head: () => ({
+    meta: [
+      { charSet: 'utf-8' },
+      { name: 'viewport', content: 'width=device-width, initial-scale=1' },
+      { title: 'TanStack Start Manifest Bloat E2E' },
+    ],
+  }),
+  component: AppShell,
+  shellComponent: RootDocument,
+})
+
+function RootDocument(_: unknown, { slots }: { slots: any }) {
+  return (
+    <Html>
+      <head>
+        <HeadContent />
+      </head>
+      <Body>
+        {slots.default?.()}
+        <Scripts />
+      </Body>
+    </Html>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/routes/a.tsx b/e2e/vue-start/start-manifest/src/routes/a.tsx
new file mode 100644
index 00000000000..e53399273da
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/a.tsx
@@ -0,0 +1,18 @@
+/// <reference types="vite/client" />
+import { createFileRoute } from '@tanstack/vue-router'
+import { SharedCard } from '~/components/SharedCard'
+import styles from '~/styles/page-a.module.css'
+
+export const Route = createFileRoute('/a')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <section class={styles.page} data-testid="page-a">
+      <h1 class={styles.title}>Route /a</h1>
+      <p>Route /a keeps the shared card styled.</p>
+      <SharedCard label="from /a" />
+    </section>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/routes/b.tsx b/e2e/vue-start/start-manifest/src/routes/b.tsx
new file mode 100644
index 00000000000..cb989a257f8
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/b.tsx
@@ -0,0 +1,18 @@
+/// <reference types="vite/client" />
+import { createFileRoute } from '@tanstack/vue-router'
+import { SharedCard } from '~/components/SharedCard'
+import styles from '~/styles/page-b.module.css'
+
+export const Route = createFileRoute('/b')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <section class={styles.page} data-testid="page-b">
+      <h1 class={styles.title}>Route /b</h1>
+      <p>Route /b should keep the shared card stylesheet after nav.</p>
+      <SharedCard label="from /b" />
+    </section>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/routes/index.tsx b/e2e/vue-start/start-manifest/src/routes/index.tsx
new file mode 100644
index 00000000000..728cc55e881
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/index.tsx
@@ -0,0 +1,16 @@
+import { createFileRoute } from '@tanstack/vue-router'
+
+export const Route = createFileRoute('/')({
+  component: HomeRoute,
+})
+
+function HomeRoute() {
+  return (
+    <section>
+      <h1>Start manifest fixture</h1>
+      <p data-testid="home-copy">
+        Use this page to navigate between CSS module routes.
+      </p>
+    </section>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/routes/lazy-css-lazy.tsx b/e2e/vue-start/start-manifest/src/routes/lazy-css-lazy.tsx
new file mode 100644
index 00000000000..0db0845425d
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/lazy-css-lazy.tsx
@@ -0,0 +1,31 @@
+import { createFileRoute } from '@tanstack/vue-router'
+import { Suspense, defineAsyncComponent } from 'vue'
+
+const LazySharedWidget = defineAsyncComponent(
+  () => import('~/components/SharedWidgetLazy'),
+)
+
+export const Route = createFileRoute('/lazy-css-lazy')({
+  component: LazyCssLazyRoute,
+})
+
+function LazyCssLazyRoute() {
+  return (
+    <section>
+      <h1 data-testid="lazy-css-lazy-heading">Lazy CSS Repro - Lazy Route</h1>
+      <p>
+        This route renders the same widget through a lazy component so the CSS
+        only exists behind a dynamic import boundary.
+      </p>
+
+      <Suspense>
+        {{
+          default: () => <LazySharedWidget />,
+          fallback: () => (
+            <div data-testid="shared-widget-loading">Loading...</div>
+          ),
+        }}
+      </Suspense>
+    </section>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/routes/lazy-css-static.tsx b/e2e/vue-start/start-manifest/src/routes/lazy-css-static.tsx
new file mode 100644
index 00000000000..2a8352e67e2
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/lazy-css-static.tsx
@@ -0,0 +1,24 @@
+import { ClientOnly, createFileRoute } from '@tanstack/vue-router'
+import { SharedWidget } from '~/components/SharedWidget'
+
+export const Route = createFileRoute('/lazy-css-static')({
+  component: LazyCssStaticRoute,
+})
+
+function LazyCssStaticRoute() {
+  return (
+    <section>
+      <h1>Lazy CSS Repro - Static Route</h1>
+      <p>
+        This route statically imports the shared widget so its CSS is present in
+        the SSR head.
+      </p>
+
+      <ClientOnly>
+        <div data-testid="lazy-css-static-hydrated">hydrated</div>
+      </ClientOnly>
+
+      <SharedWidget />
+    </section>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/routes/r1.tsx b/e2e/vue-start/start-manifest/src/routes/r1.tsx
new file mode 100644
index 00000000000..b35bec54e3d
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/r1.tsx
@@ -0,0 +1,18 @@
+/// <reference types="vite/client" />
+import { createFileRoute } from '@tanstack/vue-router'
+import styles from '~/styles/route-one.module.css'
+
+export const Route = createFileRoute('/r1')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <section>
+      <h1>Route /r1</h1>
+      <div class={styles.card} data-testid="route-r1-card">
+        Route /r1 CSS module styling
+      </div>
+    </section>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/routes/r2.tsx b/e2e/vue-start/start-manifest/src/routes/r2.tsx
new file mode 100644
index 00000000000..eadd952f98a
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/r2.tsx
@@ -0,0 +1,18 @@
+/// <reference types="vite/client" />
+import { createFileRoute } from '@tanstack/vue-router'
+import styles from '~/styles/route-two.module.css'
+
+export const Route = createFileRoute('/r2')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <section>
+      <h1>Route /r2</h1>
+      <div class={styles.card} data-testid="route-r2-card">
+        Route /r2 CSS module styling
+      </div>
+    </section>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/routes/r3.tsx b/e2e/vue-start/start-manifest/src/routes/r3.tsx
new file mode 100644
index 00000000000..a5a486cfaa3
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/r3.tsx
@@ -0,0 +1,5 @@
+import { createFileRoute } from '@tanstack/vue-router'
+
+export const Route = createFileRoute('/r3')({
+  component: () => <div>Route /r3</div>,
+})
diff --git a/e2e/vue-start/start-manifest/src/routes/r4.tsx b/e2e/vue-start/start-manifest/src/routes/r4.tsx
new file mode 100644
index 00000000000..9739966d024
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/r4.tsx
@@ -0,0 +1,5 @@
+import { createFileRoute } from '@tanstack/vue-router'
+
+export const Route = createFileRoute('/r4')({
+  component: () => <div>Route /r4</div>,
+})
diff --git a/e2e/vue-start/start-manifest/src/routes/r5.tsx b/e2e/vue-start/start-manifest/src/routes/r5.tsx
new file mode 100644
index 00000000000..7c081e29a69
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/r5.tsx
@@ -0,0 +1,5 @@
+import { createFileRoute } from '@tanstack/vue-router'
+
+export const Route = createFileRoute('/r5')({
+  component: () => <div>Route /r5</div>,
+})
diff --git a/e2e/vue-start/start-manifest/src/routes/r6.tsx b/e2e/vue-start/start-manifest/src/routes/r6.tsx
new file mode 100644
index 00000000000..c56c2afda3f
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/r6.tsx
@@ -0,0 +1,5 @@
+import { createFileRoute } from '@tanstack/vue-router'
+
+export const Route = createFileRoute('/r6')({
+  component: () => <div>Route /r6</div>,
+})
diff --git a/e2e/vue-start/start-manifest/src/routes/shared-a.tsx b/e2e/vue-start/start-manifest/src/routes/shared-a.tsx
new file mode 100644
index 00000000000..e7253a94ac9
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/shared-a.tsx
@@ -0,0 +1,14 @@
+import { createFileRoute } from '@tanstack/vue-router'
+import { SharedNestedLayout } from '~/components/SharedNestedLayout'
+
+export const Route = createFileRoute('/shared-a')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <SharedNestedLayout>
+      <div data-testid="shared-a-card">Shared route A</div>
+    </SharedNestedLayout>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/routes/shared-b.tsx b/e2e/vue-start/start-manifest/src/routes/shared-b.tsx
new file mode 100644
index 00000000000..ed02b3429bd
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/shared-b.tsx
@@ -0,0 +1,14 @@
+import { createFileRoute } from '@tanstack/vue-router'
+import { SharedNestedLayout } from '~/components/SharedNestedLayout'
+
+export const Route = createFileRoute('/shared-b')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <SharedNestedLayout>
+      <div data-testid="shared-b-card">Shared route B</div>
+    </SharedNestedLayout>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/routes/shared-c.tsx b/e2e/vue-start/start-manifest/src/routes/shared-c.tsx
new file mode 100644
index 00000000000..e395b33ed5b
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/routes/shared-c.tsx
@@ -0,0 +1,14 @@
+import { createFileRoute } from '@tanstack/vue-router'
+import { SharedNestedLayout } from '~/components/SharedNestedLayout'
+
+export const Route = createFileRoute('/shared-c')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <SharedNestedLayout>
+      <div data-testid="shared-c-card">Shared route C</div>
+    </SharedNestedLayout>
+  )
+}
diff --git a/e2e/vue-start/start-manifest/src/styles/page-a.module.css b/e2e/vue-start/start-manifest/src/styles/page-a.module.css
new file mode 100644
index 00000000000..7ed4301097f
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/styles/page-a.module.css
@@ -0,0 +1,10 @@
+.page {
+  padding: 1rem;
+  min-height: 12rem;
+  background: rgb(240, 253, 244);
+  border: 4px solid rgb(22, 163, 74);
+}
+
+.title {
+  color: rgb(21, 128, 61);
+}
diff --git a/e2e/vue-start/start-manifest/src/styles/page-b.module.css b/e2e/vue-start/start-manifest/src/styles/page-b.module.css
new file mode 100644
index 00000000000..93d1d39a014
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/styles/page-b.module.css
@@ -0,0 +1,10 @@
+.page {
+  padding: 1rem;
+  min-height: 12rem;
+  background: rgb(239, 246, 255);
+  border: 4px solid rgb(37, 99, 235);
+}
+
+.title {
+  color: rgb(29, 78, 216);
+}
diff --git a/e2e/vue-start/start-manifest/src/styles/root-shell.module.css b/e2e/vue-start/start-manifest/src/styles/root-shell.module.css
new file mode 100644
index 00000000000..e7bece86643
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/styles/root-shell.module.css
@@ -0,0 +1,37 @@
+.shell {
+  font-family:
+    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+  min-height: 100vh;
+  background: rgb(248, 250, 252);
+  color: rgb(15, 23, 42);
+}
+
+.nav {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.75rem;
+  padding: 1rem;
+  border-bottom: 1px solid rgb(226, 232, 240);
+  background: white;
+}
+
+.nav a {
+  color: rgb(37, 99, 235);
+  text-decoration: none;
+}
+
+.content {
+  max-width: 760px;
+  margin: 0 auto;
+  padding: 1.5rem 1rem 3rem;
+}
+
+.rootBadge {
+  display: inline-block;
+  margin-bottom: 1rem;
+  padding: 0.375rem 0.75rem;
+  border-radius: 9999px;
+  background: rgb(220, 252, 231);
+  color: rgb(22, 101, 52);
+  font-weight: 700;
+}
diff --git a/e2e/vue-start/start-manifest/src/styles/route-one.module.css b/e2e/vue-start/start-manifest/src/styles/route-one.module.css
new file mode 100644
index 00000000000..623d03e6a34
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/styles/route-one.module.css
@@ -0,0 +1,7 @@
+.card {
+  padding: 1rem;
+  border-radius: 0.75rem;
+  background: rgb(239, 246, 255);
+  color: rgb(30, 64, 175);
+  border: 2px solid rgb(96, 165, 250);
+}
diff --git a/e2e/vue-start/start-manifest/src/styles/route-two.module.css b/e2e/vue-start/start-manifest/src/styles/route-two.module.css
new file mode 100644
index 00000000000..66ed3557119
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/styles/route-two.module.css
@@ -0,0 +1,7 @@
+.card {
+  padding: 1rem;
+  border-radius: 0.75rem;
+  background: rgb(250, 245, 255);
+  color: rgb(126, 34, 206);
+  border: 2px solid rgb(192, 132, 252);
+}
diff --git a/e2e/vue-start/start-manifest/src/styles/shared-card.module.css b/e2e/vue-start/start-manifest/src/styles/shared-card.module.css
new file mode 100644
index 00000000000..2aa5a6ac17f
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/styles/shared-card.module.css
@@ -0,0 +1,8 @@
+.card {
+  margin-top: 1rem;
+  padding: 1.5rem;
+  border-radius: 0.75rem;
+  background: rgb(252, 231, 243);
+  border: 2px solid rgb(190, 24, 93);
+  color: rgb(157, 23, 77);
+}
diff --git a/e2e/vue-start/start-manifest/src/styles/shared-layout.module.css b/e2e/vue-start/start-manifest/src/styles/shared-layout.module.css
new file mode 100644
index 00000000000..6025a1da066
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/styles/shared-layout.module.css
@@ -0,0 +1,16 @@
+.layout {
+  padding: 1rem;
+  border-radius: 0.75rem;
+  background: rgb(255, 251, 235);
+  border: 2px solid rgb(245, 158, 11);
+}
+
+.heading {
+  color: rgb(180, 83, 9);
+  font-weight: 700;
+  margin-bottom: 0.5rem;
+}
+
+.body {
+  color: rgb(146, 64, 14);
+}
diff --git a/e2e/vue-start/start-manifest/src/styles/shared-widget.module.css b/e2e/vue-start/start-manifest/src/styles/shared-widget.module.css
new file mode 100644
index 00000000000..ed197cddb07
--- /dev/null
+++ b/e2e/vue-start/start-manifest/src/styles/shared-widget.module.css
@@ -0,0 +1,17 @@
+.widget {
+  margin-top: 1rem;
+  padding: 1rem;
+  border-top: 4px solid rgb(249, 115, 22);
+  border-radius: 0.75rem;
+  background: rgb(255, 247, 237);
+}
+
+.title {
+  font-weight: 700;
+  color: rgb(154, 52, 18);
+}
+
+.content {
+  margin-top: 0.5rem;
+  color: rgb(124, 45, 18);
+}
diff --git a/e2e/vue-start/start-manifest/tests/start-manifest.spec.ts b/e2e/vue-start/start-manifest/tests/start-manifest.spec.ts
new file mode 100644
index 00000000000..6d13e25764b
--- /dev/null
+++ b/e2e/vue-start/start-manifest/tests/start-manifest.spec.ts
@@ -0,0 +1,457 @@
+import { expect } from '@playwright/test'
+import { test } from '@tanstack/router-e2e-utils'
+import type { Page } from '@playwright/test'
+import { readdir } from 'node:fs/promises'
+import path from 'node:path'
+import { pathToFileURL } from 'node:url'
+
+const ROOT_SHELL_COLOR = 'rgb(22, 101, 52)'
+const ROUTE_ONE_COLOR = 'rgb(30, 64, 175)'
+const ROUTE_TWO_COLOR = 'rgb(126, 34, 206)'
+const SHARED_CARD_BG = 'rgb(252, 231, 243)'
+const SHARED_WIDGET_BG = 'rgb(255, 247, 237)'
+const SHARED_WIDGET_BORDER = 'rgb(249, 115, 22)'
+
+const buildUrl = (baseURL: string, pathname: string) =>
+  baseURL.replace(/\/$/, '') + pathname
+
+async function getColor(testId: string, page: Page) {
+  return page
+    .getByTestId(testId)
+    .evaluate((element) => getComputedStyle(element).color)
+}
+
+async function getBackgroundColor(testId: string, page: Page) {
+  return page
+    .getByTestId(testId)
+    .evaluate((element) => getComputedStyle(element).backgroundColor)
+}
+
+function getStylesheetHrefsFromHtml(html: string) {
+  return Array.from(
+    html.matchAll(/<link[^>]+rel="stylesheet"[^>]+href="([^"]+)"/g),
+    (match) => match[1]!,
+  )
+}
+
+async function getHeadStylesheetHrefs(page: Page) {
+  return page.locator('head link[rel="stylesheet"]').evaluateAll((links) => {
+    return links.map(
+      (link) => (link as HTMLLinkElement).getAttribute('href') || '',
+    )
+  })
+}
+
+function hasMatchingStylesheetHref(hrefs: Array<string>, pattern: string) {
+  return hrefs.some((href) => href.includes(pattern))
+}
+
+function countMatchingStylesheetHrefs(hrefs: Array<string>, pattern: string) {
+  return hrefs.filter((href) => href.includes(pattern)).length
+}
+
+async function loadBuiltStartManifest() {
+  const serverDir = path.resolve(import.meta.dirname, '../dist/server/assets')
+  const entries = await readdir(serverDir)
+  const manifestFile = entries.find(
+    (entry) =>
+      entry.startsWith('_tanstack-start-manifest_v-') && entry.endsWith('.js'),
+  )
+
+  expect(manifestFile).toBeTruthy()
+
+  const moduleUrl = `${pathToFileURL(path.join(serverDir, manifestFile!)).href}?t=${Date.now()}`
+  const manifestModule = await import(moduleUrl)
+
+  return manifestModule.tsrStartManifest() as {
+    routes: Record<string, { assets?: Array<unknown> }>
+  }
+}
+
+async function expectDirectEntry({
+  page,
+  request,
+  baseURL,
+  pathname,
+  expectedVisibleTestId,
+  expectedAbsentTestId,
+  expectedStylesheetPattern,
+  unexpectedStylesheetPattern,
+  expectedColorTestId,
+  expectedColor,
+}: {
+  page: Page
+  request: {
+    get: (url: string) => Promise<{ ok(): boolean; text(): Promise<string> }>
+  }
+  baseURL: string
+  pathname: string
+  expectedVisibleTestId: string
+  expectedAbsentTestId: string
+  expectedStylesheetPattern: string
+  unexpectedStylesheetPattern: string
+  expectedColorTestId: string
+  expectedColor: string
+}) {
+  const url = buildUrl(baseURL, pathname)
+  const response = await request.get(url)
+  const ssrHtml = await response.text()
+
+  expect(response.ok()).toBe(true)
+  expect(ssrHtml).toContain('root-shell-marker')
+  expect(ssrHtml).toContain(expectedVisibleTestId)
+  expect(ssrHtml).not.toContain(expectedAbsentTestId)
+
+  const stylesheetLinks = getStylesheetHrefsFromHtml(ssrHtml)
+
+  expect(
+    countMatchingStylesheetHrefs(stylesheetLinks, expectedStylesheetPattern),
+  ).toBe(1)
+  expect(
+    countMatchingStylesheetHrefs(stylesheetLinks, unexpectedStylesheetPattern),
+  ).toBe(0)
+  expect(stylesheetLinks).toHaveLength(2)
+
+  await page.goto(url)
+  await expect(page.getByTestId(expectedVisibleTestId)).toBeVisible()
+  await expect(page.getByTestId('hydration-marker')).toBeVisible()
+
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return hasMatchingStylesheetHref(hrefs, expectedStylesheetPattern)
+    })
+    .toBe(true)
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return countMatchingStylesheetHrefs(hrefs, unexpectedStylesheetPattern)
+    })
+    .toBe(0)
+
+  await expect
+    .poll(() => getColor('root-shell-marker', page))
+    .toBe(ROOT_SHELL_COLOR)
+  await expect
+    .poll(() => getColor(expectedColorTestId, page))
+    .toBe(expectedColor)
+}
+
+test('SSR and client navigation keep CSS module styles correct without hydration errors', async ({
+  page,
+  baseURL,
+  request,
+}) => {
+  const routeOneUrl = buildUrl(baseURL!, '/r1')
+  const response = await request.get(routeOneUrl)
+  const ssrHtml = await response.text()
+
+  expect(response.ok()).toBe(true)
+  expect(ssrHtml).toContain('root-shell-marker')
+  expect(ssrHtml).toContain('route-r1-card')
+  expect(ssrHtml).not.toContain('route-r2-card')
+
+  const stylesheetLinks = getStylesheetHrefsFromHtml(ssrHtml)
+
+  expect(countMatchingStylesheetHrefs(stylesheetLinks, 'r1-')).toBe(1)
+  expect(countMatchingStylesheetHrefs(stylesheetLinks, 'r2-')).toBe(0)
+  expect(stylesheetLinks).toHaveLength(2)
+
+  await page.goto(routeOneUrl)
+
+  await expect(page.getByTestId('route-r1-card')).toBeVisible()
+  await expect(page.getByTestId('hydration-marker')).toBeVisible()
+
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return hasMatchingStylesheetHref(hrefs, 'r1-')
+    })
+    .toBe(true)
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return countMatchingStylesheetHrefs(hrefs, 'r2-')
+    })
+    .toBe(0)
+
+  await expect
+    .poll(() => getColor('root-shell-marker', page))
+    .toBe(ROOT_SHELL_COLOR)
+  await expect.poll(() => getColor('route-r1-card', page)).toBe(ROUTE_ONE_COLOR)
+
+  await page.getByTestId('nav-/r2').click()
+  await page.waitForURL('**/r2')
+  await expect(page.getByTestId('route-r2-card')).toBeVisible()
+
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return hasMatchingStylesheetHref(hrefs, 'r2-')
+    })
+    .toBe(true)
+
+  await expect
+    .poll(() => getColor('root-shell-marker', page))
+    .toBe(ROOT_SHELL_COLOR)
+  await expect.poll(() => getColor('route-r2-card', page)).toBe(ROUTE_TWO_COLOR)
+
+  await page.getByTestId('nav-/r1').click()
+  await page.waitForURL('**/r1')
+  await expect(page.getByTestId('route-r1-card')).toBeVisible()
+
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return hasMatchingStylesheetHref(hrefs, 'r1-')
+    })
+    .toBe(true)
+
+  await expect
+    .poll(() => getColor('root-shell-marker', page))
+    .toBe(ROOT_SHELL_COLOR)
+  await expect.poll(() => getColor('route-r1-card', page)).toBe(ROUTE_ONE_COLOR)
+})
+
+test('direct SSR entry on /r2 only includes its stylesheet and hydrates cleanly', async ({
+  page,
+  baseURL,
+  request,
+}) => {
+  await expectDirectEntry({
+    page,
+    request,
+    baseURL: baseURL!,
+    pathname: '/r2',
+    expectedVisibleTestId: 'route-r2-card',
+    expectedAbsentTestId: 'route-r1-card',
+    expectedStylesheetPattern: 'r2-',
+    unexpectedStylesheetPattern: 'r1-',
+    expectedColorTestId: 'route-r2-card',
+    expectedColor: ROUTE_TWO_COLOR,
+  })
+})
+
+test('direct SSR entries on different route-css pages stay isolated', async ({
+  page,
+  baseURL,
+  request,
+}) => {
+  await expectDirectEntry({
+    page,
+    request,
+    baseURL: baseURL!,
+    pathname: '/r2',
+    expectedVisibleTestId: 'route-r2-card',
+    expectedAbsentTestId: 'route-r1-card',
+    expectedStylesheetPattern: 'r2-',
+    unexpectedStylesheetPattern: 'r1-',
+    expectedColorTestId: 'route-r2-card',
+    expectedColor: ROUTE_TWO_COLOR,
+  })
+
+  await expectDirectEntry({
+    page,
+    request,
+    baseURL: baseURL!,
+    pathname: '/r1',
+    expectedVisibleTestId: 'route-r1-card',
+    expectedAbsentTestId: 'route-r2-card',
+    expectedStylesheetPattern: 'r1-',
+    unexpectedStylesheetPattern: 'r2-',
+    expectedColorTestId: 'route-r1-card',
+    expectedColor: ROUTE_ONE_COLOR,
+  })
+})
+
+test('home route only renders the root stylesheet and no route-specific CSS', async ({
+  page,
+  baseURL,
+  request,
+}) => {
+  const homeUrl = buildUrl(baseURL!, '/')
+  const response = await request.get(homeUrl)
+  const ssrHtml = await response.text()
+
+  expect(response.ok()).toBe(true)
+  expect(ssrHtml).toContain('root-shell-marker')
+  expect(ssrHtml).toContain('home-copy')
+  expect(ssrHtml).not.toContain('route-r1-card')
+  expect(ssrHtml).not.toContain('route-r2-card')
+
+  const stylesheetLinks = getStylesheetHrefsFromHtml(ssrHtml)
+
+  expect(countMatchingStylesheetHrefs(stylesheetLinks, 'r1-')).toBe(0)
+  expect(countMatchingStylesheetHrefs(stylesheetLinks, 'r2-')).toBe(0)
+  expect(stylesheetLinks).toHaveLength(1)
+
+  await page.goto(homeUrl)
+  await expect(page.getByTestId('home-copy')).toBeVisible()
+  await expect(page.getByTestId('hydration-marker')).toBeVisible()
+
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return countMatchingStylesheetHrefs(hrefs, 'r1-')
+    })
+    .toBe(0)
+  await expect
+    .poll(async () => {
+      const hrefs = await getHeadStylesheetHrefs(page)
+      return countMatchingStylesheetHrefs(hrefs, 'r2-')
+    })
+    .toBe(0)
+
+  await expect
+    .poll(() => getColor('root-shell-marker', page))
+    .toBe(ROOT_SHELL_COLOR)
+})
+
+test('built start manifest preserves shared layout asset identity across sibling routes', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/shared-a'))
+  await expect(page.getByTestId('shared-a-card')).toBeVisible()
+
+  const manifest = await loadBuiltStartManifest()
+
+  const sharedAAsset = manifest.routes['/shared-a']?.assets?.[0]
+  const sharedBAsset = manifest.routes['/shared-b']?.assets?.[0]
+  const sharedCAsset = manifest.routes['/shared-c']?.assets?.[0]
+
+  expect(sharedAAsset).toBeTruthy()
+  expect(sharedAAsset).toBe(sharedBAsset)
+  expect(sharedBAsset).toBe(sharedCAsset)
+})
+
+test('shared CSS chunk persists across client-side nav', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/a'))
+
+  await expect(page.getByTestId('page-a')).toBeVisible()
+  await expect(page.getByTestId('shared-card')).toBeVisible()
+  await expect
+    .poll(() => getBackgroundColor('shared-card', page))
+    .toBe(SHARED_CARD_BG)
+  await expect(
+    page.locator('head link[rel="stylesheet"][href*="SharedCard"]'),
+  ).toHaveCount(1)
+
+  await page.getByTestId('nav-/b').click()
+  await page.waitForURL('**/b')
+  await expect(page.getByTestId('page-b')).toBeVisible()
+
+  await expect(
+    page.locator('head link[rel="stylesheet"][href*="SharedCard"]'),
+  ).toHaveCount(1)
+  await expect
+    .poll(() => getBackgroundColor('shared-card', page))
+    .toBe(SHARED_CARD_BG)
+})
+
+test('shared widget CSS stays applied when navigating from static to lazy route', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/lazy-css-static'))
+
+  const widget = page.getByTestId('shared-widget')
+  await expect(widget).toBeVisible()
+  expect(await getBackgroundColor('shared-widget', page)).toBe(SHARED_WIDGET_BG)
+  expect(
+    await widget.evaluate(
+      (element) => getComputedStyle(element).borderTopColor,
+    ),
+  ).toBe(SHARED_WIDGET_BORDER)
+
+  await expect(page.getByTestId('lazy-css-static-hydrated')).toBeVisible()
+
+  await page.getByTestId('nav-/lazy-css-lazy').click()
+  await page.waitForURL('**/lazy-css-lazy')
+  await expect(page.getByTestId('lazy-css-lazy-heading')).toBeVisible()
+
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+})
+
+test('shared widget CSS stays applied when navigating from lazy to static route', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/lazy-css-lazy'))
+  await expect(page.getByTestId('lazy-css-lazy-heading')).toBeVisible()
+
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+
+  await page.getByTestId('nav-/lazy-css-static').click()
+  await page.waitForURL('**/lazy-css-static')
+
+  const widget = page.getByTestId('shared-widget')
+  await expect(widget).toBeVisible()
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+  expect(
+    await widget.evaluate(
+      (element) => getComputedStyle(element).borderTopColor,
+    ),
+  ).toBe(SHARED_WIDGET_BORDER)
+})
+
+test('shared widget CSS is applied on direct navigation to lazy route', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/lazy-css-lazy'))
+  await expect(page.getByTestId('lazy-css-lazy-heading')).toBeVisible()
+
+  const widget = page.getByTestId('shared-widget')
+  await expect(widget).toBeVisible()
+
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+  expect(
+    await widget.evaluate(
+      (element) => getComputedStyle(element).borderTopColor,
+    ),
+  ).toBe(SHARED_WIDGET_BORDER)
+})
+
+test('shared widget CSS persists after navigating away from lazy and back', async ({
+  page,
+  baseURL,
+}) => {
+  await page.goto(buildUrl(baseURL!, '/lazy-css-static'))
+  await expect(page.getByTestId('lazy-css-static-hydrated')).toBeVisible()
+
+  await page.getByTestId('nav-/lazy-css-lazy').click()
+  await page.waitForURL('**/lazy-css-lazy')
+  await expect(page.getByTestId('shared-widget')).toBeVisible()
+
+  await page.getByTestId('nav-home').click()
+  await page.waitForURL(/\/([^/]*)(\/)?($|\?)/)
+
+  await page.getByTestId('nav-/lazy-css-lazy').click()
+  await page.waitForURL('**/lazy-css-lazy')
+
+  await expect
+    .poll(() => getBackgroundColor('shared-widget', page), {
+      timeout: 5_000,
+    })
+    .toBe(SHARED_WIDGET_BG)
+})
diff --git a/e2e/vue-start/start-manifest/tsconfig.json b/e2e/vue-start/start-manifest/tsconfig.json
new file mode 100644
index 00000000000..44a68ebf564
--- /dev/null
+++ b/e2e/vue-start/start-manifest/tsconfig.json
@@ -0,0 +1,23 @@
+{
+  "include": ["**/*.ts", "**/*.tsx"],
+  "compilerOptions": {
+    "strict": true,
+    "esModuleInterop": true,
+    "jsx": "preserve",
+    "jsxImportSource": "vue",
+    "module": "ESNext",
+    "moduleResolution": "Bundler",
+    "lib": ["DOM", "DOM.Iterable", "ES2022"],
+    "isolatedModules": true,
+    "resolveJsonModule": true,
+    "skipLibCheck": true,
+    "target": "ES2024",
+    "allowJs": true,
+    "forceConsistentCasingInFileNames": true,
+    "paths": {
+      "~/*": ["./src/*"]
+    },
+    "noEmit": true,
+    "types": ["vite/client"]
+  }
+}
diff --git a/e2e/vue-start/start-manifest/vite.config.ts b/e2e/vue-start/start-manifest/vite.config.ts
new file mode 100644
index 00000000000..f1102cffabc
--- /dev/null
+++ b/e2e/vue-start/start-manifest/vite.config.ts
@@ -0,0 +1,13 @@
+import { defineConfig } from 'vite'
+import { tanstackStart } from '@tanstack/vue-start/plugin/vite'
+import vueJsx from '@vitejs/plugin-vue-jsx'
+
+export default defineConfig({
+  server: {
+    port: 3000,
+  },
+  resolve: {
+    tsconfigPaths: true,
+  },
+  plugins: [tanstackStart({ srcDirectory: 'src' }), vueJsx()],
+})
diff --git a/packages/react-router/src/Asset.tsx b/packages/react-router/src/Asset.tsx
index a1018ac93bc..5ad2e015162 100644
--- a/packages/react-router/src/Asset.tsx
+++ b/packages/react-router/src/Asset.tsx
@@ -28,7 +28,17 @@ export function Asset({
     case 'meta':
       return <meta {...attrs} suppressHydrationWarning />
     case 'link':
-      return <link {...attrs} nonce={nonce} suppressHydrationWarning />
+      return (
+        <link
+          {...attrs}
+          precedence={
+            attrs?.precedence ??
+            (attrs?.rel === 'stylesheet' ? 'default' : undefined)
+          }
+          nonce={nonce}
+          suppressHydrationWarning
+        />
+      )
     case 'style':
       return (
         <style
diff --git a/packages/react-router/tests/Scripts.test.tsx b/packages/react-router/tests/Scripts.test.tsx
index 0ca10b794a5..5dfb95395ac 100644
--- a/packages/react-router/tests/Scripts.test.tsx
+++ b/packages/react-router/tests/Scripts.test.tsx
@@ -24,17 +24,26 @@ import {
 import { Scripts } from '../src/Scripts'
 import type { Manifest } from '@tanstack/router-core'
 
-const createTestManifest = (routeId: string) =>
+// React 19 keeps stylesheet resources keyed by href alive for the lifetime of
+// the test module, so these tests use explicit asset URLs to avoid collisions
+// between cases even though Testing Library cleanup runs after each test.
+const createTestManifest = (
+  routeId: string,
+  options?: {
+    stylesheetHref?: string
+    preloadHref?: string
+  },
+) =>
   ({
     routes: {
       [routeId]: {
-        preloads: ['/main.js'],
+        preloads: [options?.preloadHref ?? '/main.js'],
         assets: [
           {
             tag: 'link',
             attrs: {
               rel: 'stylesheet',
-              href: '/main.css',
+              href: options?.stylesheetHref ?? '/main.css',
             },
           },
         ],
@@ -373,6 +382,7 @@ describe('ssr HeadContent', () => {
 
   test('keeps manifest stylesheet links mounted when history state changes', async () => {
     const history = createTestBrowserHistory()
+    const stylesheetHref = '/history-state.css'
 
     const rootRoute = createRootRoute({
       component: () => {
@@ -408,7 +418,9 @@ describe('ssr HeadContent', () => {
     })
 
     router.ssr = {
-      manifest: createTestManifest(rootRoute.id),
+      manifest: createTestManifest(rootRoute.id, {
+        stylesheetHref,
+      }),
     }
 
     await router.load()
@@ -417,7 +429,7 @@ describe('ssr HeadContent', () => {
 
     const getStylesheetLink = () =>
       Array.from(document.querySelectorAll('link[rel="stylesheet"]')).find(
-        (link) => link.getAttribute('href') === '/main.css',
+        (link) => link.getAttribute('href') === stylesheetHref,
       )
 
     await waitFor(() => {
@@ -438,13 +450,15 @@ describe('ssr HeadContent', () => {
     expect(getStylesheetLink()).toBe(initialLink)
     expect(
       Array.from(document.querySelectorAll('link[rel="stylesheet"]')).filter(
-        (link) => link.getAttribute('href') === '/main.css',
+        (link) => link.getAttribute('href') === stylesheetHref,
       ),
     ).toHaveLength(1)
   })
 
   test('applies assetCrossOrigin to manifest assets and preloads', async () => {
     const history = createTestBrowserHistory()
+    const stylesheetHref = '/asset-cross-origin.css'
+    const preloadHref = '/asset-cross-origin.js'
 
     const rootRoute = createRootRoute({
       component: () => {
@@ -477,7 +491,10 @@ describe('ssr HeadContent', () => {
     })
 
     router.ssr = {
-      manifest: createTestManifest(rootRoute.id),
+      manifest: createTestManifest(rootRoute.id, {
+        stylesheetHref,
+        preloadHref,
+      }),
     }
 
     await router.load()
@@ -485,26 +502,34 @@ describe('ssr HeadContent', () => {
     await act(() => render(<RouterProvider router={router} />))
 
     await waitFor(() => {
-      expect(document.head.querySelector('link[rel="stylesheet"]')).toBeTruthy()
       expect(
-        document.head.querySelector('link[rel="modulepreload"]'),
+        document.head.querySelector(
+          `link[rel="stylesheet"][href="${stylesheetHref}"]`,
+        ),
+      ).toBeTruthy()
+      expect(
+        document.head.querySelector(
+          `link[rel="modulepreload"][href="${preloadHref}"]`,
+        ),
       ).toBeTruthy()
     })
 
     expect(
       document.head
-        .querySelector('link[rel="stylesheet"]')
+        .querySelector(`link[rel="stylesheet"][href="${stylesheetHref}"]`)
         ?.getAttribute('crossorigin'),
     ).toBe('use-credentials')
     expect(
       document.head
-        .querySelector('link[rel="modulepreload"]')
+        .querySelector(`link[rel="modulepreload"][href="${preloadHref}"]`)
         ?.getAttribute('crossorigin'),
     ).toBe('anonymous')
   })
 
   test('assetCrossOrigin overrides manifest crossOrigin values', async () => {
     const history = createTestBrowserHistory()
+    const stylesheetHref = '/override-cross-origin.css'
+    const preloadHref = '/override-cross-origin.js'
 
     const rootRoute = createRootRoute({
       component: () => {
@@ -536,14 +561,14 @@ describe('ssr HeadContent', () => {
         routes: {
           [rootRoute.id]: {
             preloads: [
-              { href: '/main.js', crossOrigin: 'use-credentials' as const },
+              { href: preloadHref, crossOrigin: 'use-credentials' as const },
             ],
             assets: [
               {
                 tag: 'link',
                 attrs: {
                   rel: 'stylesheet',
-                  href: '/main.css',
+                  href: stylesheetHref,
                   crossOrigin: 'use-credentials',
                 },
               },
@@ -558,26 +583,33 @@ describe('ssr HeadContent', () => {
     await act(() => render(<RouterProvider router={router} />))
 
     await waitFor(() => {
-      expect(document.head.querySelector('link[rel="stylesheet"]')).toBeTruthy()
       expect(
-        document.head.querySelector('link[rel="modulepreload"]'),
+        document.head.querySelector(
+          `link[rel="stylesheet"][href="${stylesheetHref}"]`,
+        ),
+      ).toBeTruthy()
+      expect(
+        document.head.querySelector(
+          `link[rel="modulepreload"][href="${preloadHref}"]`,
+        ),
       ).toBeTruthy()
     })
 
     expect(
       document.head
-        .querySelector('link[rel="stylesheet"]')
+        .querySelector(`link[rel="stylesheet"][href="${stylesheetHref}"]`)
         ?.getAttribute('crossorigin'),
     ).toBe('anonymous')
     expect(
       document.head
-        .querySelector('link[rel="modulepreload"]')
+        .querySelector(`link[rel="modulepreload"][href="${preloadHref}"]`)
         ?.getAttribute('crossorigin'),
     ).toBe('anonymous')
   })
 
   test('keeps manifest stylesheet links mounted across repeated Link navigations', async () => {
     const history = createTestBrowserHistory()
+    const stylesheetHref = '/repeated-nav.css'
 
     const rootRoute = createRootRoute({
       component: () => {
@@ -608,7 +640,9 @@ describe('ssr HeadContent', () => {
     })
 
     router.ssr = {
-      manifest: createTestManifest(rootRoute.id),
+      manifest: createTestManifest(rootRoute.id, {
+        stylesheetHref,
+      }),
     }
 
     await router.load()
@@ -617,7 +651,7 @@ describe('ssr HeadContent', () => {
 
     const getStylesheetLink = () =>
       Array.from(document.querySelectorAll('link[rel="stylesheet"]')).find(
-        (link) => link.getAttribute('href') === '/main.css',
+        (link) => link.getAttribute('href') === stylesheetHref,
       )
 
     await waitFor(() => {
@@ -648,7 +682,7 @@ describe('ssr HeadContent', () => {
     expect(getStylesheetLink()).toBe(initialLink)
     expect(
       Array.from(document.querySelectorAll('link[rel="stylesheet"]')).filter(
-        (link) => link.getAttribute('href') === '/main.css',
+        (link) => link.getAttribute('href') === stylesheetHref,
       ),
     ).toHaveLength(1)
   })
diff --git a/packages/start-plugin-core/src/start-manifest-plugin/manifestBuilder.ts b/packages/start-plugin-core/src/start-manifest-plugin/manifestBuilder.ts
index 4a7be7e5706..1d2129584f1 100644
--- a/packages/start-plugin-core/src/start-manifest-plugin/manifestBuilder.ts
+++ b/packages/start-plugin-core/src/start-manifest-plugin/manifestBuilder.ts
@@ -10,8 +10,6 @@ import {
 import type { ManifestAssetLink, RouterManagedTag } from '@tanstack/router-core'
 import type { NormalizedClientBuild, NormalizedClientChunk } from '../types'
 
-const ROUTER_MANAGED_MODE = 1
-const NON_ROUTE_DYNAMIC_MODE = 2
 const VISITING_CHUNK = 1
 
 type RouteTreeRoute = {
@@ -27,7 +25,6 @@ interface ScannedClientChunks {
   entryChunk: NormalizedClientChunk
   chunksByFileName: ReadonlyMap<string, NormalizedClientChunk>
   routeChunksByFilePath: ReadonlyMap<string, Array<NormalizedClientChunk>>
-  routeEntryChunks: ReadonlySet<NormalizedClientChunk>
 }
 
 interface ManifestAssetResolvers {
@@ -114,19 +111,25 @@ export function appendUniqueAssets(
 }
 
 function getAssetIdentity(asset: RouterManagedTag) {
-  if (asset.tag === 'link' || asset.tag === 'script') {
-    const attrs = asset.attrs ?? {}
-    return [
-      asset.tag,
-      'href' in attrs ? String(attrs.href) : '',
-      'src' in attrs ? String(attrs.src) : '',
-      'rel' in attrs ? String(attrs.rel) : '',
-      'type' in attrs ? String(attrs.type) : '',
-      asset.children ?? '',
-    ].join('|')
+  return JSON.stringify({
+    tag: asset.tag,
+    attrs: normalizeAssetAttrs(asset.attrs),
+    children: 'children' in asset ? (asset.children ?? null) : null,
+  })
+}
+
+function normalizeAssetAttrs(attrs: Record<string, any> | undefined) {
+  if (!attrs) {
+    return null
   }
 
-  return JSON.stringify(asset)
+  const entries = Object.entries(attrs)
+  if (entries.length === 0) {
+    return null
+  }
+
+  entries.sort(([left], [right]) => left.localeCompare(right))
+  return Object.fromEntries(entries)
 }
 
 function mergeRouteChunkData(options: {
@@ -151,15 +154,7 @@ export function buildStartManifest(options: {
   basePath: string
 }): StartManifest {
   const scannedChunks = scanClientChunks(options.clientBuild)
-  const hashedCssFiles = collectDynamicImportCss(
-    scannedChunks.routeEntryChunks,
-    scannedChunks.chunksByFileName,
-    scannedChunks.entryChunk,
-  )
-  const assetResolvers = createManifestAssetResolvers({
-    basePath: options.basePath,
-    hashedCssFiles,
-  })
+  const assetResolvers = createManifestAssetResolvers(options.basePath)
 
   const routes = buildRouteManifestRoutes({
     routeTreeRoutes: options.routeTreeRoutes,
@@ -202,13 +197,10 @@ export function scanClientChunks(
     throw new Error(`Missing entry chunk: ${clientBuild.entryChunkFileName}`)
   }
 
-  const routeEntryChunks = new Set<NormalizedClientChunk>()
   const routeChunksByFilePath = new Map<string, Array<NormalizedClientChunk>>()
 
   for (const chunk of clientBuild.chunksByFileName.values()) {
     if (chunk.routeFilePaths.length > 0) {
-      routeEntryChunks.add(chunk)
-
       for (const routeFilePath of chunk.routeFilePaths) {
         let chunks = routeChunksByFilePath.get(routeFilePath)
         if (chunks === undefined) {
@@ -224,92 +216,12 @@ export function scanClientChunks(
     entryChunk,
     chunksByFileName: clientBuild.chunksByFileName,
     routeChunksByFilePath,
-    routeEntryChunks,
   }
 }
 
-export function collectDynamicImportCss(
-  routeEntryChunks: ReadonlySet<NormalizedClientChunk>,
-  chunksByFileName: ReadonlyMap<string, NormalizedClientChunk>,
-  entryChunk?: NormalizedClientChunk,
-) {
-  const routerManagedCssFiles = new Set<string>()
-  const nonRouteDynamicCssFiles = new Set<string>()
-  const hashedCssFiles = new Set<string>()
-  const visitedByChunk = new Map<NormalizedClientChunk, number>()
-  const chunkStack: Array<NormalizedClientChunk> = []
-  const modeStack: Array<number> = []
-
-  for (const routeEntryChunk of routeEntryChunks) {
-    chunkStack.push(routeEntryChunk)
-    modeStack.push(ROUTER_MANAGED_MODE)
-  }
-
-  if (entryChunk) {
-    chunkStack.push(entryChunk)
-    modeStack.push(ROUTER_MANAGED_MODE)
-  }
-
-  while (chunkStack.length > 0) {
-    const chunk = chunkStack.pop()!
-    const mode = modeStack.pop()!
-    const previousMode = visitedByChunk.get(chunk) ?? 0
-
-    if ((previousMode & mode) === mode) {
-      continue
-    }
-
-    visitedByChunk.set(chunk, previousMode | mode)
-
-    if ((mode & ROUTER_MANAGED_MODE) !== 0) {
-      for (const cssFile of chunk.css) {
-        routerManagedCssFiles.add(cssFile)
-      }
-    }
-
-    if ((mode & NON_ROUTE_DYNAMIC_MODE) !== 0) {
-      for (const cssFile of chunk.css) {
-        nonRouteDynamicCssFiles.add(cssFile)
-      }
-    }
-
-    for (let i = 0; i < chunk.imports.length; i++) {
-      const importedChunk = chunksByFileName.get(chunk.imports[i]!)
-      if (importedChunk) {
-        chunkStack.push(importedChunk)
-        modeStack.push(mode)
-      }
-    }
-
-    for (let i = 0; i < chunk.dynamicImports.length; i++) {
-      const dynamicImportedChunk = chunksByFileName.get(
-        chunk.dynamicImports[i]!,
-      )
-      if (dynamicImportedChunk) {
-        chunkStack.push(dynamicImportedChunk)
-        modeStack.push(
-          (mode & NON_ROUTE_DYNAMIC_MODE) !== 0 ||
-            !routeEntryChunks.has(dynamicImportedChunk)
-            ? NON_ROUTE_DYNAMIC_MODE
-            : ROUTER_MANAGED_MODE,
-        )
-      }
-    }
-  }
-
-  for (const cssFile of routerManagedCssFiles) {
-    if (nonRouteDynamicCssFiles.has(cssFile)) {
-      hashedCssFiles.add(cssFile)
-    }
-  }
-
-  return hashedCssFiles
-}
-
-export function createManifestAssetResolvers(options: {
-  basePath: string
-  hashedCssFiles?: Set<string>
-}): ManifestAssetResolvers {
+export function createManifestAssetResolvers(
+  basePath: string,
+): ManifestAssetResolvers {
   const assetPathByFileName = new Map<string, string>()
   const stylesheetAssetByFileName = new Map<string, RouterManagedTag>()
   const preloadsByChunk = new Map<NormalizedClientChunk, Array<string>>()
@@ -320,7 +232,7 @@ export function createManifestAssetResolvers(options: {
       return cachedPath
     }
 
-    const assetPath = joinURL(options.basePath, fileName)
+    const assetPath = joinURL(basePath, fileName)
     assetPathByFileName.set(fileName, assetPath)
     return assetPath
   }
@@ -336,7 +248,7 @@ export function createManifestAssetResolvers(options: {
       tag: 'link',
       attrs: {
         rel: 'stylesheet',
-        href: options.hashedCssFiles?.has(cssFile) ? `${href}#` : href,
+        href,
         type: 'text/css',
       },
     } satisfies RouterManagedTag
@@ -380,15 +292,14 @@ export function createChunkCssAssetCollector(options: {
 
   const appendAsset = (
     assets: Array<RouterManagedTag>,
-    seenAssets: Set<string>,
+    seenAssets: Set<RouterManagedTag>,
     asset: RouterManagedTag,
   ) => {
-    const identity = getAssetIdentity(asset)
-    if (seenAssets.has(identity)) {
+    if (seenAssets.has(asset)) {
       return
     }
 
-    seenAssets.add(identity)
+    seenAssets.add(asset)
     assets.push(asset)
   }
 
@@ -406,7 +317,7 @@ export function createChunkCssAssetCollector(options: {
     stateByChunk.set(chunk, VISITING_CHUNK)
 
     const assets: Array<RouterManagedTag> = []
-    const seenAssets = new Set<string>()
+    const seenAssets = new Set<RouterManagedTag>()
 
     for (const cssFile of chunk.css) {
       appendAsset(assets, seenAssets, options.getStylesheetAsset(cssFile))
diff --git a/packages/start-plugin-core/tests/start-manifest-plugin/manifestBuilder.test.ts b/packages/start-plugin-core/tests/start-manifest-plugin/manifestBuilder.test.ts
index d736a436984..7ed89912fab 100644
--- a/packages/start-plugin-core/tests/start-manifest-plugin/manifestBuilder.test.ts
+++ b/packages/start-plugin-core/tests/start-manifest-plugin/manifestBuilder.test.ts
@@ -4,7 +4,6 @@ import {
   appendUniqueAssets,
   appendUniqueStrings,
   buildStartManifest,
-  collectDynamicImportCss,
   createChunkCssAssetCollector,
   createManifestAssetResolvers,
   getRouteFilePathsFromModuleIds,
@@ -176,6 +175,53 @@ describe('appendUniqueAssets', () => {
       ]),
     ).toBe(target)
   })
+
+  test('keeps distinct link assets with different attributes', () => {
+    const stylesheetA = {
+      tag: 'link' as const,
+      attrs: {
+        rel: 'stylesheet',
+        href: '/assets/a.css',
+        media: 'screen',
+        type: 'text/css',
+      },
+    }
+    const stylesheetB = {
+      tag: 'link' as const,
+      attrs: {
+        rel: 'stylesheet',
+        href: '/assets/a.css',
+        media: 'print',
+        type: 'text/css',
+      },
+    }
+
+    expect(appendUniqueAssets([stylesheetA], [stylesheetB])).toEqual([
+      stylesheetA,
+      stylesheetB,
+    ])
+  })
+
+  test('keeps distinct script assets with different attributes', () => {
+    const scriptA = {
+      tag: 'script' as const,
+      attrs: {
+        src: '/assets/app.js',
+        type: 'module',
+        async: true,
+      },
+    }
+    const scriptB = {
+      tag: 'script' as const,
+      attrs: {
+        src: '/assets/app.js',
+        type: 'module',
+        defer: true,
+      },
+    }
+
+    expect(appendUniqueAssets([scriptA], [scriptB])).toEqual([scriptA, scriptB])
+  })
 })
 
 describe('scanClientChunks', () => {
@@ -195,11 +241,6 @@ describe('scanClientChunks', () => {
     expect(scanned.entryChunk).toBe(
       normalizedBuild.chunksByFileName.get('entry.js'),
     )
-    expect(
-      scanned.routeEntryChunks.has(
-        normalizedBuild.chunksByFileName.get('posts.js')!,
-      ),
-    ).toBe(true)
     expect(scanned.routeChunksByFilePath.get('/routes/posts.tsx')).toEqual([
       normalizedBuild.chunksByFileName.get('posts.js')!,
     ])
@@ -217,99 +258,8 @@ describe('scanClientChunks', () => {
   })
 })
 
-describe('collectDynamicImportCss', () => {
-  test('collects css reachable through dynamic imports only', () => {
-    const routeChunk = makeChunk({
-      fileName: 'route.js',
-      dynamicImports: ['lazy.js'],
-      importedCss: ['route.css'],
-    })
-    const lazyChunk = makeChunk({
-      fileName: 'lazy.js',
-      imports: ['shared.js'],
-      importedCss: ['lazy.css'],
-    })
-    const sharedChunk = makeChunk({
-      fileName: 'shared.js',
-      importedCss: ['shared.css'],
-    })
-    const dynamicCss = collectDynamicImportCss(
-      new Set([normalizeTestChunk(routeChunk)]),
-      new Map([
-        ['route.js', normalizeTestChunk(routeChunk)],
-        ['lazy.js', normalizeTestChunk(lazyChunk)],
-        ['shared.js', normalizeTestChunk(sharedChunk)],
-      ]),
-    )
-
-    expect(Array.from(dynamicCss)).toEqual([])
-  })
-
-  test('ignores CSS shared only across router-managed routes', () => {
-    const routeA = makeChunk({
-      fileName: 'routeA.js',
-      imports: ['shared.js'],
-      moduleIds: ['/routes/a.tsx?tsr-split=component'],
-    })
-    const routeB = makeChunk({
-      fileName: 'routeB.js',
-      imports: ['shared.js'],
-      moduleIds: ['/routes/b.tsx?tsr-split=component'],
-    })
-    const sharedChunk = makeChunk({
-      fileName: 'shared.js',
-      importedCss: ['shared.css'],
-    })
-    const dynamicCss = collectDynamicImportCss(
-      new Set([normalizeTestChunk(routeA), normalizeTestChunk(routeB)]),
-      new Map([
-        ['routeA.js', normalizeTestChunk(routeA)],
-        ['routeB.js', normalizeTestChunk(routeB)],
-        ['shared.js', normalizeTestChunk(sharedChunk)],
-      ]),
-    )
-
-    expect(dynamicCss.has('shared.css')).toBe(false)
-  })
-
-  test('collects css reachable through both router-managed and non-route dynamic imports', () => {
-    const entryChunk = makeChunk({
-      fileName: 'entry.js',
-      isEntry: true,
-      dynamicImports: ['lazy.js'],
-    })
-    const routeChunk = makeChunk({
-      fileName: 'route.js',
-      imports: ['shared.js'],
-      moduleIds: ['/routes/home.tsx?tsr-split=component'],
-    })
-    const lazyChunk = makeChunk({
-      fileName: 'lazy.js',
-      imports: ['shared.js'],
-    })
-    const sharedChunk = makeChunk({
-      fileName: 'shared.js',
-      importedCss: ['shared.css'],
-    })
-
-    const normalizedBuild = normalizeTestBuild({
-      'entry.js': entryChunk,
-      'route.js': routeChunk,
-      'lazy.js': lazyChunk,
-      'shared.js': sharedChunk,
-    })
-    const dynamicCss = collectDynamicImportCss(
-      new Set([normalizedBuild.chunksByFileName.get('route.js')!]),
-      normalizedBuild.chunksByFileName,
-      normalizedBuild.chunksByFileName.get('entry.js'),
-    )
-
-    expect(dynamicCss.has('shared.css')).toBe(true)
-  })
-})
-
 describe('createManifestAssetResolvers + createChunkCssAssetCollector', () => {
-  test('reuses cached stylesheet assets and appends hash for dynamic css', () => {
+  test('reuses cached stylesheet assets', () => {
     const entryChunk = makeChunk({
       fileName: 'entry.js',
       imports: ['shared.js'],
@@ -324,10 +274,7 @@ describe('createManifestAssetResolvers + createChunkCssAssetCollector', () => {
       ['shared.js', normalizeTestChunk(sharedChunk)],
     ])
 
-    const resolvers = createManifestAssetResolvers({
-      basePath: '/assets',
-      hashedCssFiles: new Set(['shared.css']),
-    })
+    const resolvers = createManifestAssetResolvers('/assets')
     const cssAssetCollector = createChunkCssAssetCollector({
       chunksByFileName,
       getStylesheetAsset: resolvers.getStylesheetAsset,
@@ -350,7 +297,7 @@ describe('createManifestAssetResolvers + createChunkCssAssetCollector', () => {
         tag: 'link',
         attrs: {
           rel: 'stylesheet',
-          href: '/assets/shared.css#',
+          href: '/assets/shared.css',
           type: 'text/css',
         },
       },
@@ -510,74 +457,6 @@ describe('buildStartManifest', () => {
     ])
   })
 
-  test('hashes css shared by route chunks and nested non-route dynamic imports', () => {
-    const entryChunk = makeChunk({
-      fileName: 'entry.js',
-      isEntry: true,
-      dynamicImports: ['route-lazy.js'],
-      importedCss: ['entry.css'],
-    })
-    const routeStaticChunk = makeChunk({
-      fileName: 'route-static.js',
-      imports: ['widget.js'],
-      moduleIds: ['/routes/static.tsx?tsr-split=component'],
-    })
-    const routeLazyChunk = makeChunk({
-      fileName: 'route-lazy.js',
-      dynamicImports: ['widget-lazy.js'],
-      moduleIds: ['/routes/lazy.tsx?tsr-split=component'],
-    })
-    const widgetChunk = makeChunk({
-      fileName: 'widget.js',
-      importedCss: ['widget.css'],
-    })
-    const widgetLazyChunk = makeChunk({
-      fileName: 'widget-lazy.js',
-      imports: ['widget.js'],
-    })
-
-    const manifest = buildStartManifest({
-      clientBuild: normalizeViteClientBuild({
-        'entry.js': entryChunk,
-        'route-static.js': routeStaticChunk,
-        'route-lazy.js': routeLazyChunk,
-        'widget.js': widgetChunk,
-        'widget-lazy.js': widgetLazyChunk,
-      }),
-      routeTreeRoutes: {
-        __root__: { children: ['/static', '/lazy'] } as any,
-        '/static': { filePath: '/routes/static.tsx' },
-        '/lazy': { filePath: '/routes/lazy.tsx' },
-      },
-      basePath: '/assets',
-    })
-
-    expect(manifest.clientEntry).toBe('/assets/entry.js')
-    expect(manifest.routes.__root__!.assets).toEqual([
-      {
-        tag: 'link',
-        attrs: {
-          rel: 'stylesheet',
-          href: '/assets/entry.css',
-          type: 'text/css',
-        },
-      },
-    ])
-    expect(manifest.routes['/static']!.assets).toEqual([
-      {
-        tag: 'link',
-        attrs: {
-          rel: 'stylesheet',
-          href: '/assets/widget.css#',
-          type: 'text/css',
-        },
-      },
-    ])
-    expect(manifest.routes['/lazy']!.preloads).toEqual([
-      '/assets/route-lazy.js',
-    ])
-  })
-
   test('dedupes route css already owned by ancestor routes', () => {
     const entryChunk = makeChunk({
       fileName: 'entry.js',
@@ -632,52 +511,6 @@ describe('buildStartManifest', () => {
     ])
   })
 
-  test('adds hash only when css is shared by router-managed and non-route dynamic imports', () => {
-    const entryChunk = makeChunk({
-      fileName: 'entry.js',
-      isEntry: true,
-      dynamicImports: ['global-lazy.js'],
-    })
-    const routeChunk = makeChunk({
-      fileName: 'route.js',
-      imports: ['shared.js'],
-      moduleIds: ['/routes/about.tsx?tsr-split=component'],
-    })
-    const sharedChunk = makeChunk({
-      fileName: 'shared.js',
-      importedCss: ['shared.css'],
-    })
-    const globalLazyChunk = makeChunk({
-      fileName: 'global-lazy.js',
-      imports: ['shared.js'],
-    })
-
-    const manifest = buildStartManifest({
-      clientBuild: normalizeViteClientBuild({
-        'entry.js': entryChunk,
-        'route.js': routeChunk,
-        'shared.js': sharedChunk,
-        'global-lazy.js': globalLazyChunk,
-      }),
-      routeTreeRoutes: {
-        __root__: { children: ['/about'] } as any,
-        '/about': { filePath: '/routes/about.tsx' },
-      },
-      basePath: '/assets',
-    })
-
-    expect(manifest.routes['/about']!.assets).toEqual([
-      {
-        tag: 'link',
-        attrs: {
-          rel: 'stylesheet',
-          href: '/assets/shared.css#',
-          type: 'text/css',
-        },
-      },
-    ])
-  })
-
   test('serializeStartManifest preserves shared asset identity across routes', () => {
     const sharedAsset = {
       tag: 'link' as const,
@@ -1260,51 +1093,6 @@ describe('multi-chunk routes must merge assets and preloads', () => {
   })
 })
 
-describe('entry chunk dynamic imports must be scanned for dynamic CSS', () => {
-  test('CSS behind entry chunk dynamic import gets # suffix', () => {
-    // Entry chunk dynamically imports a chunk with CSS,
-    // but no route entry chunk references that dynamic import
-    const entryChunk = makeChunk({
-      fileName: 'entry.js',
-      isEntry: true,
-      dynamicImports: ['global-lazy.js'],
-      importedCss: ['entry.css'],
-    })
-    const globalLazyChunk = makeChunk({
-      fileName: 'global-lazy.js',
-      importedCss: ['global-lazy.css'],
-    })
-    // A route that statically imports the same CSS chunk
-    const routeChunk = makeChunk({
-      fileName: 'route.js',
-      imports: ['global-lazy.js'],
-      moduleIds: ['/routes/home.tsx?tsr-split=component'],
-    })
-
-    const manifest = buildStartManifest({
-      clientBuild: normalizeViteClientBuild({
-        'entry.js': entryChunk,
-        'global-lazy.js': globalLazyChunk,
-        'route.js': routeChunk,
-      }),
-      routeTreeRoutes: {
-        __root__: { children: ['/home'] } as any,
-        '/home': { filePath: '/routes/home.tsx' },
-      },
-      basePath: '/assets',
-    })
-
-    // global-lazy.css is reachable through both the router-managed route
-    // and the entry chunk's non-route dynamic import, so it should have #
-    const homeAssets = manifest.routes['/home']!.assets!
-    const globalLazyCss = homeAssets.find((a: any) =>
-      a.attrs.href.includes('global-lazy.css'),
-    ) as any
-    expect(globalLazyCss).toBeDefined()
-    expect(globalLazyCss.attrs.href).toBe('/assets/global-lazy.css#')
-  })
-})
-
 describe('buildStartManifest route pruning', () => {
   test('routes with no assets or preloads are pruned from returned manifest', () => {
     const entryChunk = makeChunk({
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 262710a585e..a4360011c73 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -394,7 +394,7 @@ importers:
         version: 5.9.2
       vitest:
         specifier: ^3.2.4
-        version: 3.2.4(@types/debug@4.1.12)(@types/node@25.0.9)(@vitest/browser@4.0.18(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))(vitest@4.0.18))(@vitest/ui@4.0.18(vitest@4.0.18))(esbuild@0.27.4)(jiti@2.6.1)(jsdom@27.0.0(postcss@8.5.8))(msw@2.7.0(@types/node@25.0.9)(typescript@5.9.2))(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
+        version: 3.2.4(@types/debug@4.1.12)(@types/node@25.0.9)(@vitest/browser@4.0.18(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))(vitest@4.0.18))(@vitest/ui@4.0.18)(esbuild@0.27.4)(jiti@2.6.1)(jsdom@27.0.0(postcss@8.5.8))(msw@2.7.0(@types/node@25.0.9)(typescript@5.9.2))(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
 
   e2e/react-router/basepath-file-based:
     dependencies:
@@ -4695,6 +4695,40 @@ importers:
         specifier: ^2.11.11
         version: 2.11.11(@testing-library/jest-dom@6.6.3)(solid-js@1.9.10)(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))
 
+  e2e/solid-start/start-manifest:
+    dependencies:
+      '@tanstack/solid-router':
+        specifier: workspace:^
+        version: link:../../../packages/solid-router
+      '@tanstack/solid-start':
+        specifier: workspace:*
+        version: link:../../../packages/solid-start
+      solid-js:
+        specifier: 1.9.10
+        version: 1.9.10
+    devDependencies:
+      '@playwright/test':
+        specifier: ^1.57.0
+        version: 1.58.0
+      '@tanstack/router-e2e-utils':
+        specifier: workspace:^
+        version: link:../../e2e-utils
+      '@types/node':
+        specifier: 25.0.9
+        version: 25.0.9
+      srvx:
+        specifier: ^0.11.9
+        version: 0.11.15
+      typescript:
+        specifier: ^6.0.2
+        version: 6.0.2
+      vite:
+        specifier: ^8.0.0
+        version: 8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
+      vite-plugin-solid:
+        specifier: ^2.11.11
+        version: 2.11.11(@testing-library/jest-dom@6.6.3)(solid-js@1.9.10)(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))
+
   e2e/solid-start/virtual-routes:
     dependencies:
       '@tanstack/solid-router':
@@ -6528,6 +6562,40 @@ importers:
         specifier: ^8.0.0
         version: 8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
 
+  e2e/vue-start/start-manifest:
+    dependencies:
+      '@tanstack/vue-router':
+        specifier: workspace:*
+        version: link:../../../packages/vue-router
+      '@tanstack/vue-start':
+        specifier: workspace:*
+        version: link:../../../packages/vue-start
+      vue:
+        specifier: ^3.5.16
+        version: 3.5.25(typescript@6.0.2)
+    devDependencies:
+      '@playwright/test':
+        specifier: ^1.57.0
+        version: 1.58.0
+      '@tanstack/router-e2e-utils':
+        specifier: workspace:^
+        version: link:../../e2e-utils
+      '@types/node':
+        specifier: 25.0.9
+        version: 25.0.9
+      '@vitejs/plugin-vue-jsx':
+        specifier: ^5.1.5
+        version: 5.1.5(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))(vue@3.5.25(typescript@6.0.2))
+      srvx:
+        specifier: ^0.11.9
+        version: 0.11.15
+      typescript:
+        specifier: ^6.0.2
+        version: 6.0.2
+      vite:
+        specifier: ^8.0.0
+        version: 8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
+
   e2e/vue-start/virtual-routes:
     dependencies:
       '@tanstack/virtual-file-routes':
@@ -8954,7 +9022,7 @@ importers:
         version: 8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
       vitest:
         specifier: ^3.2.4
-        version: 3.2.4(@types/debug@4.1.12)(@types/node@25.0.9)(@vitest/browser@4.0.18(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))(vitest@4.0.18))(@vitest/ui@4.0.18(vitest@4.0.18))(esbuild@0.27.4)(jiti@2.6.1)(jsdom@27.0.0(postcss@8.5.8))(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
+        version: 3.2.4(@types/debug@4.1.12)(@types/node@25.0.9)(@vitest/browser@4.0.18(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))(vitest@4.0.18))(@vitest/ui@4.0.18)(esbuild@0.27.4)(jiti@2.6.1)(jsdom@27.0.0(postcss@8.5.8))(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
       web-vitals:
         specifier: ^5.1.0
         version: 5.1.0
@@ -11468,7 +11536,7 @@ importers:
         version: 2.11.11(@testing-library/jest-dom@6.6.3)(solid-js@1.9.10)(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))
       vitest:
         specifier: ^3.2.4
-        version: 3.2.4(@types/debug@4.1.12)(@types/node@25.0.9)(@vitest/browser@4.0.18(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))(vitest@4.0.18))(@vitest/ui@4.0.18(vitest@4.0.18))(esbuild@0.27.4)(jiti@2.6.1)(jsdom@27.0.0(postcss@8.5.8))(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
+        version: 3.2.4(@types/debug@4.1.12)(@types/node@25.0.9)(@vitest/browser@4.0.18(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))(vitest@4.0.18))(@vitest/ui@4.0.18)(esbuild@0.27.4)(jiti@2.6.1)(jsdom@27.0.0(postcss@8.5.8))(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
       web-vitals:
         specifier: ^5.1.0
         version: 5.1.0
@@ -33331,7 +33399,7 @@ snapshots:
       sirv: 3.0.2
       tinyglobby: 0.2.15
       tinyrainbow: 3.0.3
-      vitest: 4.0.18(@types/node@25.0.9)(@vitest/ui@4.0.18)(esbuild@0.27.4)(jiti@2.6.1)(jsdom@25.0.1)(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
+      vitest: 4.0.18(@types/node@25.0.9)(@vitest/ui@4.0.18)(esbuild@0.27.4)(jiti@2.6.1)(jsdom@27.0.0(postcss@8.5.8))(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
 
   '@vitest/utils@3.2.4':
     dependencies:
@@ -40572,7 +40640,7 @@ snapshots:
     optionalDependencies:
       vite: 8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1)
 
-  vitest@3.2.4(@types/debug@4.1.12)(@types/node@25.0.9)(@vitest/browser@4.0.18(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))(vitest@4.0.18))(@vitest/ui@4.0.18(vitest@4.0.18))(esbuild@0.27.4)(jiti@2.6.1)(jsdom@27.0.0(postcss@8.5.8))(msw@2.7.0(@types/node@25.0.9)(typescript@5.9.2))(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1):
+  vitest@3.2.4(@types/debug@4.1.12)(@types/node@25.0.9)(@vitest/browser@4.0.18(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))(vitest@4.0.18))(@vitest/ui@4.0.18)(esbuild@0.27.4)(jiti@2.6.1)(jsdom@27.0.0(postcss@8.5.8))(msw@2.7.0(@types/node@25.0.9)(typescript@5.9.2))(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1):
     dependencies:
       '@types/chai': 5.2.2
       '@vitest/expect': 3.2.4
@@ -40618,7 +40686,7 @@ snapshots:
       - tsx
       - yaml
 
-  vitest@3.2.4(@types/debug@4.1.12)(@types/node@25.0.9)(@vitest/browser@4.0.18(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))(vitest@4.0.18))(@vitest/ui@4.0.18(vitest@4.0.18))(esbuild@0.27.4)(jiti@2.6.1)(jsdom@27.0.0(postcss@8.5.8))(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1):
+  vitest@3.2.4(@types/debug@4.1.12)(@types/node@25.0.9)(@vitest/browser@4.0.18(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(vite@8.0.0(@types/node@25.0.9)(esbuild@0.27.4)(jiti@2.6.1)(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1))(vitest@4.0.18))(@vitest/ui@4.0.18)(esbuild@0.27.4)(jiti@2.6.1)(jsdom@27.0.0(postcss@8.5.8))(msw@2.7.0(@types/node@25.0.9)(typescript@6.0.2))(sass-embedded@1.97.2)(sass@1.97.2)(terser@5.37.0)(tsx@4.20.3)(yaml@2.8.1):
     dependencies:
       '@types/chai': 5.2.2
       '@vitest/expect': 3.2.4