diff --git a/apps/web/src/workbench/WorkbenchShell.tsx b/apps/web/src/workbench/WorkbenchShell.tsx
index 68b9cfe..ee2b57f 100644
--- a/apps/web/src/workbench/WorkbenchShell.tsx
+++ b/apps/web/src/workbench/WorkbenchShell.tsx
@@ -2748,9 +2748,7 @@ function PlayableVideo({
       autoPlay={autoPlay}
       playsInline
       preload="metadata"
-      style={
-        aspectRatio ? ({ aspectRatio } as CSSProperties) : undefined
-      }
+      style={aspectRatio ? ({ aspectRatio } as CSSProperties) : undefined}
       onLoadedMetadata={(event) => {
         const video = event.currentTarget;
         if (video.videoWidth > 0 && video.videoHeight > 0) {
@@ -9331,14 +9329,30 @@ function OpenTuGenerationPage({
     kind === 'image' ? settings.imageModel : settings.videoModel;
   const selectableModels = useSelectableModels(kind);
   const [selectedModel, setSelectedModel] = useState(
-    isConfiguredSettingsValue(initialModel) ? initialModel : undefined
+    () =>
+      resolveSelectableModelFallback(
+        selectableModels,
+        isConfiguredSettingsValue(initialModel) ? initialModel : null,
+        createModelRef(
+          activeRoute?.profileId || null,
+          activeRoute?.modelId || initialModel || null
+        )
+      )?.modelId
   );
   const [selectedModelRef, setSelectedModelRef] = useState<ModelRef | null>(
-    () =>
-      createModelRef(
+    () => {
+      const initialModelRef = createModelRef(
         activeRoute?.profileId || null,
         activeRoute?.modelId || initialModel || null
-      )
+      );
+      return (
+        resolveSelectableModelFallback(
+          selectableModels,
+          isConfiguredSettingsValue(initialModel) ? initialModel : null,
+          initialModelRef
+        )?.modelRef || initialModelRef
+      );
+    }
   );
   const [hasUserSelectedModel, setHasUserSelectedModel] = useState(false);
   useEffect(() => {
@@ -10370,7 +10384,9 @@ function FunClipEditingPage({
           pendingHandoffNoticeRef.current !== detail.createdAt
         ) {
           pendingHandoffNoticeRef.current = detail.createdAt || Date.now();
-          MessagePlugin.info('已打开口播精修，正在等待这个数字人视频同步到素材列表。');
+          MessagePlugin.info(
+            '已打开口播精修，正在等待这个数字人视频同步到素材列表。'
+          );
         }
         return false;
       }
diff --git a/apps/web/src/workbench/avatar-golden.scss b/apps/web/src/workbench/avatar-golden.scss
index 8ad9a6b..10e873b 100644
--- a/apps/web/src/workbench/avatar-golden.scss
+++ b/apps/web/src/workbench/avatar-golden.scss
@@ -2227,6 +2227,7 @@ body
   .tg-avatar-page--compose
   .tg-task-row--aigcpanel.tg-task-row--with-media {
   position: relative !important;
+  container-type: inline-size !important;
   grid-template-columns: 32px minmax(0, 1fr) auto !important;
   gap: 10px 14px !important;
   padding: 18px 20px !important;
diff --git a/packages/drawnix/src/services/__tests__/seedance-adapter.test.ts b/packages/drawnix/src/services/__tests__/seedance-adapter.test.ts
new file mode 100644
index 0000000..10d9dff
--- /dev/null
+++ b/packages/drawnix/src/services/__tests__/seedance-adapter.test.ts
@@ -0,0 +1,91 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import {
+  resolveSeedanceActualModel,
+  seedanceVideoAdapter,
+} from '../model-adapters/seedance-adapter';
+import type { AdapterContext } from '../model-adapters/types';
+
+describe('seedance video adapter', () => {
+  beforeEach(() => {
+    vi.useFakeTimers();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  it('keeps runtime Doubao Seedance model ids unchanged', () => {
+    expect(
+      resolveSeedanceActualModel('doubao-seedance-2-0-fast-260128', '720p')
+    ).toBe('doubao-seedance-2-0-fast-260128');
+  });
+
+  it('maps built-in Seedance aliases to concrete API model ids', () => {
+    expect(resolveSeedanceActualModel('seedance-1.5-pro', '720p')).toBe(
+      'doubao-seedance-1-5-pro_720p'
+    );
+  });
+
+  it('submits runtime Doubao Seedance model ids without adding a second prefix', async () => {
+    const requests: Array<{ url: string; init: RequestInit }> = [];
+    const fetcher = vi.fn(
+      async (input: RequestInfo | URL, init?: RequestInit) => {
+        requests.push({ url: String(input), init: init || {} });
+        if ((init?.method || 'GET') === 'POST') {
+          return new Response(
+            JSON.stringify({
+              id: 'task-1',
+              status: 'queued',
+            }),
+            {
+              status: 200,
+              headers: { 'Content-Type': 'application/json' },
+            }
+          );
+        }
+
+        return new Response(
+          JSON.stringify({
+            id: 'task-1',
+            status: 'succeeded',
+            progress: 100,
+            url: 'https://cdn.example.com/seedance.mp4',
+            seconds: '5',
+          }),
+          {
+            status: 200,
+            headers: { 'Content-Type': 'application/json' },
+          }
+        );
+      }
+    );
+
+    const context: AdapterContext = {
+      baseUrl: 'https://truemodel.benchu.cloud/v1',
+      apiKey: 'sk-test',
+      authType: 'bearer',
+      operation: 'video',
+      fetcher,
+    };
+
+    const resultPromise = seedanceVideoAdapter.generateVideo(context, {
+      model: 'doubao-seedance-2-0-fast-260128',
+      prompt: 'tiny city at night',
+      size: '720p@16:9',
+      duration: 5,
+    });
+
+    await vi.advanceTimersByTimeAsync(5000);
+    const result = await resultPromise;
+
+    const body = requests[0]?.init.body as FormData;
+    expect(result.url).toBe('https://cdn.example.com/seedance.mp4');
+    expect(requests[0]?.url).toBe('/api/truemodel/v1/videos');
+    expect(body.get('model')).toBe('doubao-seedance-2-0-fast-260128');
+    expect(body.get('model')).not.toBe(
+      'doubao-doubao-seedance-2-0-fast-260128_720p'
+    );
+    expect(body.get('size')).toBe('16:9');
+    expect(requests[1]?.url).toBe('/api/truemodel/v1/videos/task-1');
+  });
+});
diff --git a/packages/drawnix/src/services/model-adapters/seedance-adapter.ts b/packages/drawnix/src/services/model-adapters/seedance-adapter.ts
index ed6236d..43fda02 100644
--- a/packages/drawnix/src/services/model-adapters/seedance-adapter.ts
+++ b/packages/drawnix/src/services/model-adapters/seedance-adapter.ts
@@ -15,14 +15,28 @@ const SEEDANCE_MODELS = [
 
 type SeedanceSubmitResponse = {
   id: string;
-  status: 'queued' | 'processing' | 'completed' | 'failed';
+  status:
+    | 'queued'
+    | 'processing'
+    | 'in_progress'
+    | 'completed'
+    | 'succeeded'
+    | 'failed'
+    | 'error';
   created_at?: number;
   error?: string | { code: string; message: string };
 };
 
 type SeedanceQueryResponse = {
   id: string;
-  status: 'queued' | 'processing' | 'completed' | 'failed';
+  status:
+    | 'queued'
+    | 'processing'
+    | 'in_progress'
+    | 'completed'
+    | 'succeeded'
+    | 'failed'
+    | 'error';
   progress?: number;
   video_url?: string;
   url?: string;
@@ -36,10 +50,20 @@ const DEFAULT_POLL_MAX_ATTEMPTS = 1080; // ~90 min
 /**
  * 将逻辑模型 ID + 分辨率拼接为 API 实际模型名
  * seedance-1.5-pro + 720p → doubao-seedance-1-5-pro_720p
+ * 运行时发现的 doubao-seedance-* 已经是真实供应商模型名，必须原样发送。
  */
-const resolveActualModel = (logicalId: string, resolution: string): string => {
+export const resolveSeedanceActualModel = (
+  logicalId: string,
+  resolution: string
+): string => {
+  const normalizedLogicalId = logicalId.trim();
+  const lowerId = normalizedLogicalId.toLowerCase();
+  if (lowerId.startsWith('doubao-seedance-')) {
+    return normalizedLogicalId;
+  }
+
   // 将 "." 替换为 "-"：seedance-1.5-pro → seedance-1-5-pro
-  const normalized = logicalId.replace(/\./g, '-');
+  const normalized = normalizedLogicalId.replace(/\./g, '-');
   return `doubao-${normalized}_${resolution}`;
 };
 
@@ -208,12 +232,14 @@ export const seedanceVideoAdapter: VideoModelAdapter = {
   async generateVideo(context, request: VideoGenerationRequest) {
     const logicalModel = request.model || 'seedance-1.5-pro';
     const resolution = extractResolution(request.size);
-    const actualModel = resolveActualModel(logicalModel, resolution);
+    const actualModel = resolveSeedanceActualModel(logicalModel, resolution);
     const parsedSize = parseSeedanceSize(request.size);
 
     // 宽高比优先取显式参数，其次回退到 size 中的组合值
     const aspectRatio =
-      normalizeAspectRatio(request.params?.aspect_ratio as string | undefined) ||
+      normalizeAspectRatio(
+        request.params?.aspect_ratio as string | undefined
+      ) ||
       normalizeAspectRatio(request.params?.aspectRatio as string | undefined) ||
       parsedSize.aspectRatio ||
       '16:9';
@@ -253,7 +279,7 @@ export const seedanceVideoAdapter: VideoModelAdapter = {
     onSubmitted?.(taskId);
 
     // 提交时已失败
-    if (submitResult.status === 'failed') {
+    if (submitResult.status === 'failed' || submitResult.status === 'error') {
       throw new Error(extractErrorMessage(submitResult.error));
     }
 
@@ -281,11 +307,11 @@ export const seedanceVideoAdapter: VideoModelAdapter = {
           (status.status === 'failed'
             ? 100
             : status.status === 'completed'
-              ? 100
-              : 0);
+            ? 100
+            : 0);
         onProgress?.(progress, status.status);
 
-        if (status.status === 'completed') {
+        if (status.status === 'completed' || status.status === 'succeeded') {
           const url = status.video_url || status.url;
           if (!url) {
             throw new Error('Seedance 结果缺少视频 URL');
@@ -298,7 +324,7 @@ export const seedanceVideoAdapter: VideoModelAdapter = {
           };
         }
 
-        if (status.status === 'failed') {
+        if (status.status === 'failed' || status.status === 'error') {
           isBusinessFailure = true;
           throw new Error(extractErrorMessage(status.error));
         }