diff --git a/frontend/src/pages/quick-start/index.tsx b/frontend/src/pages/quick-start/index.tsx
index de032d69..be476fc0 100644
--- a/frontend/src/pages/quick-start/index.tsx
+++ b/frontend/src/pages/quick-start/index.tsx
@@ -32,6 +32,7 @@ import Markdown, { compiler } from 'markdown-to-jsx'
 import { Link, useLocation, useNavigate, useParams, useSearchParams } from 'react-router'
 import { InlineArrowAction } from './inline-arrow-action'
 import { PixelPerfectVersionSwitch, type PixelPerfectVersion } from './pixel-perfect-version-switch'
+import { Render3DOption } from './render3d-option'
 
 import {
   ART_STYLE,
@@ -3342,6 +3343,7 @@ function QuickStartRun({
                       className="aspect-square w-full rounded-2xl border border-app-line bg-app-surface-muted object-contain [image-rendering:pixelated]"
                     />
                   </div>
+                  <Render3DOption session={session} />
                 </>
               ) : workflowHasFailure(revision) ? (
                 <>
diff --git a/frontend/src/pages/quick-start/render3d-option.test.tsx b/frontend/src/pages/quick-start/render3d-option.test.tsx
new file mode 100644
index 00000000..5b9d438e
--- /dev/null
+++ b/frontend/src/pages/quick-start/render3d-option.test.tsx
@@ -0,0 +1,65 @@
+/** @vitest-environment jsdom */
+import { cleanup, fireEvent, render, screen } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+
+vi.mock('@/entities', async () => {
+  const actual = await vi.importActual<Record<string, unknown>>('@/entities')
+  return {
+    ...actual,
+    render3DApis: {
+      precheckMaster: async () => ({}),
+      getOutfitAsset: async () => ({
+        state: 'absent',
+        model3dUrl: null,
+        reviewModelUrl: null,
+        error: null,
+        cost: {
+          model3dCredits: 20,
+          autorigCredits: 10,
+          totalCredits: 30,
+          billing: 'postpaid',
+          scope: 'per_outfit_once',
+        },
+      }),
+      buildOutfitAsset: async () => ({}),
+      approveOutfitAsset: async () => ({}),
+      discardOutfitAsset: async () => ({}),
+      getBakeJob: async () => null,
+      putBakeFrame: async () => 1,
+      completeBake: async () => undefined,
+      failBake: async () => undefined,
+    },
+  }
+})
+
+const { Render3DOption } = await import('./render3d-option')
+
+afterEach(cleanup)
+
+describe('Quick Start 的 3D 进阶入口', () => {
+  it('默认折叠 —— 主线是「一句话跑完」，按次计费的重动作不该摊在主线上', () => {
+    render(
+      <Render3DOption
+        session={{ getCharacterInfo: () => ({ characterId: '7', outfitId: 'outfit-default' }) }}
+      />,
+    )
+    expect(screen.getByRole('button', { name: /建 3D 资产/ })).toBeTruthy()
+    expect(screen.queryByRole('group', { name: '3D 资产' })).toBeNull()
+  })
+
+  it('展开后才出现资产面板', async () => {
+    render(
+      <Render3DOption
+        session={{ getCharacterInfo: () => ({ characterId: '7', outfitId: 'outfit-default' }) }}
+      />,
+    )
+    fireEvent.click(screen.getByRole('button', { name: /建 3D 资产/ }))
+    expect(await screen.findByRole('group', { name: '3D 资产' })).toBeTruthy()
+    expect(screen.getByText(/只支持双足人形/)).toBeTruthy()
+  })
+
+  it('还没有角色时不渲染 —— 没有 outfit 就没有可建的对象', () => {
+    const { container } = render(<Render3DOption session={{ getCharacterInfo: () => null }} />)
+    expect(container.textContent).toBe('')
+  })
+})
diff --git a/frontend/src/pages/quick-start/render3d-option.tsx b/frontend/src/pages/quick-start/render3d-option.tsx
new file mode 100644
index 00000000..2f8392a8
--- /dev/null
+++ b/frontend/src/pages/quick-start/render3d-option.tsx
@@ -0,0 +1,59 @@
+/**
+ * 角色确认之后的可选进阶路线：给这个造型建 3D 资产（Refs #518）。
+ *
+ * 默认折叠。Quick Start 的主线是「一句话跑完」，而建 3D 是按次计费、带人工确认闸、
+ * 每账号还有名额上限的重动作 —— 摊开在主线上会把它读成必经的一步。
+ */
+import { useState } from 'react'
+
+import { render3DApis } from '@/entities'
+import { Render3DAssetPanel } from '@/pages/workflow-editor/render3d-panel'
+
+/** 只取建资产要的那两个 id；不依赖整个会话，测试也就不必造一份完整会话。 */
+export interface Render3DOptionSession {
+  getCharacterInfo(): { characterId: string; outfitId: string } | null
+}
+
+export function Render3DOption({ session }: { session: Render3DOptionSession | null }) {
+  const [open, setOpen] = useState(false)
+  const info = session?.getCharacterInfo() ?? null
+  if (!info) return null
+
+  return (
+    <div className="w-full max-w-2xl">
+      {open ? (
+        <div className="grid gap-2 rounded-2xl border border-app-line bg-app-surface-muted p-3">
+          <div className="flex items-center justify-between gap-2">
+            <p className="m-0 text-xs font-semibold text-app-ink">3D 资产 · 三渲二</p>
+            <button
+              type="button"
+              className="text-[11px] text-app-muted transition hover:text-app-ink"
+              onClick={() => setOpen(false)}
+            >
+              收起
+            </button>
+          </div>
+          <p className="m-0 text-[11px] leading-[1.6] text-app-muted">
+            建好后这个角色的每个动作都能改用三渲二出帧：多朝向零额外费用、各朝向天生一致。
+            目前只支持双足人形。
+          </p>
+          <Render3DAssetPanel
+            render3d={render3DApis}
+            characterId={info.characterId}
+            outfitId={info.outfitId}
+            precheck={null}
+            disabled={false}
+          />
+        </div>
+      ) : (
+        <button
+          type="button"
+          className="rounded-xl border border-app-line bg-app-surface-muted px-3 py-2 text-xs font-semibold text-app-muted transition hover:border-app-accent hover:text-app-ink"
+          onClick={() => setOpen(true)}
+        >
+          进阶 · 给这个角色建 3D 资产
+        </button>
+      )}
+    </div>
+  )
+}