diff --git a/app/api/canvas/detail-plan/route.ts b/app/api/canvas/detail-plan/route.ts
index 64a2b8fc6..9e66dd918 100644
--- a/app/api/canvas/detail-plan/route.ts
+++ b/app/api/canvas/detail-plan/route.ts
@@ -231,8 +231,13 @@ const TITLE_META_TERMS = [
   "核心价值",
   "场景痛点",
   "方案拆解",
+  "机制拆解",
+  "核心机制拆解",
+  "核心收益可证",
+  "差异强化",
   "细节证明",
   "信任收口",
+  "证据收口",
   "卖点延展",
   "解决方案",
   "价值延展",
@@ -580,7 +585,7 @@ function enforceCoreFocusOnScreens(params: {
         : `核心卖点锚点：${coreFocus.anchor}。本屏必须服务同一核心卖点，不得偏题。`;
     const firstScreenPosterLine =
       language === "en"
-        ? "Screen 1 must be a hero poster cover: single dominant product visual, cinematic light, strong focal contrast, clean headline-safe top area, no collage."
+        ? "Hero-cover rule: single dominant product visual, cinematic light, strong focal contrast, clean headline-safe top area, no collage."
         : "首屏必须是封面海报感：单一主视觉主体、电影级光影、强焦点对比、顶部清晰标题安全区，禁止拼贴说明图。";
 
     let title = screen.title;
@@ -911,33 +916,33 @@ function buildFallbackScreens(params: {
       ? [
           "Hero poster cover with one core value",
           "Pain-point resonance and trigger moment",
-          "Solution structure and key mechanism",
-          "Differentiation reinforcement",
-          "Evidence and trust closing",
+          "Comfort benefit clarity in real use",
+          "Differentiated value in key details",
+          "Trust proof and confidence closing",
         ]
       : [
           "首屏海报主视觉聚焦单一核心卖点",
           "痛点共鸣与触发场景放大",
-          "解决方案与关键机制说明",
-          "差异化优势重复强化",
-          "证据背书与信任收口",
+          "真实使用中的舒适收益说明",
+          "关键细节体现差异优势",
+          "证据背书与购买信心建立",
         ];
   const screenTypeSequence: DetailScreenType[] = ["B", "A", "B", "C", "B"];
   const defaultTitles =
     language === "en"
       ? [
           coreFocus.firstScreenTitle,
-          "Core Benefit Proof",
-          "Mechanism Breakdown",
-          "Difference Reinforcement",
-          "Trust Evidence",
+          "Sit Longer, Feel Better",
+          "Comfort That Holds Up",
+          "Stability You Can Trust",
+          "Built to Last Daily",
         ]
       : [
           coreFocus.firstScreenTitle,
-          "核心收益可证",
-          "机制拆解",
-          "差异强化",
-          "证据收口",
+          "久坐更轻松",
+          "贴合更舒适",
+          "稳固更省心",
+          "耐用不将就",
         ];
 
   return Array.from({ length: count }).map((_, index) => {
@@ -1028,14 +1033,14 @@ function buildFallbackScreens(params: {
     const visualPrompt =
       language === "en"
         ? [
-            `E-commerce detail frame ${index + 1}, objective: ${objective}.`,
+            `E-commerce detail frame, objective: ${objective}.`,
             `Fixed vertical canvas 790x1300 pixels.`,
             `Keep exact product identity consistent across all frames.`,
             `Main scene: ${mainScenario}; core demand: ${coreNeed}.`,
             "Audience profile is internal strategy only; do not expose explicit age/gender labels in visible copy.",
             `Core selling-point anchor: ${coreFocus.anchor}; this frame must stay aligned to this anchor.`,
             index === 0
-              ? "Screen 1 hero-cover rule: this must look like a poster key visual with one dominant subject, strong focus contrast, and no collage cards."
+              ? "Hero-cover rule: this must look like a poster key visual with one dominant subject, strong focus contrast, and no collage cards."
               : "",
             `Positioning statement: ${positioning}.`,
             `Global style: ${globalStyle.designLanguage}.`,
@@ -1055,7 +1060,7 @@ function buildFallbackScreens(params: {
             `Task context: ${prompt}.`,
           ].join(" ")
         : [
-            `电商详情页第${index + 1}屏，目标：${objective}。`,
+            `电商详情页分镜，目标：${objective}。`,
             "画布固定竖版 790x1300 像素。",
             "全套保持同一产品外观一致（结构、材质、颜色、比例、Logo）。",
             `主场景：${mainScenario}；核心需求：${coreNeed}。`,
@@ -1157,7 +1162,14 @@ function sanitizeScreen(
 
   const fabeSource = (source.fabe || {}) as Record<string, unknown>;
   const visualPrompt = desensitizeAudienceCopy(
-    safeText(source.visualPrompt, fallback.visualPrompt),
+    stripAgentPlanningPhrases(
+      safeText(source.visualPrompt, fallback.visualPrompt)
+        .replace(/第\s*\d+\s*屏/gi, "")
+        .replace(/\bscreen\s*\d+\b/gi, "")
+        .replace(/\bframe\s*\d+\b/gi, "")
+        .replace(/\s+/g, " ")
+        .trim()
+    ),
     language
   );
   const normalizeTitle = (value: string) => {