diff --git a/src/api/studentTrainingAnswer.js b/src/api/studentTrainingAnswer.js
index 422d013..05a30c0 100644
--- a/src/api/studentTrainingAnswer.js
+++ b/src/api/studentTrainingAnswer.js
@@ -423,3 +423,27 @@ export function checkConsumerBehaviorStepFour(payload) {
     headers: { repeatSubmit: false },
   });
 }
+
+export function checkProductValuePositioningStepOne(payload) {
+  const rows = Array.isArray(payload?.rows) ? payload.rows : [];
+  const types = ["核心痛点1", "核心痛点2", "核心痛点3", "弱需求", "伪需求"];
+  if (isStudentDemo()) {
+    const valid = rows.length === types.length && rows.every((row, index) => row?.id === index + 1
+      && row?.type === types[index]
+      && Boolean(String(row?.description || "").trim())
+      && Boolean(String(row?.scene || "").trim()));
+    return Promise.resolve({
+      code: 200,
+      data: {
+        valid,
+        message: valid ? "核心痛点分类填写完整。" : "请完成 3 个核心痛点、弱需求和伪需求的描述与场景。",
+      },
+    });
+  }
+  return request({
+    url: "/api/student-training-answers/product-value-positioning/step-1/validate",
+    method: "post",
+    data: { rows },
+    headers: { repeatSubmit: false },
+  });
+}
diff --git a/src/views/product/differentiation.vue b/src/views/product/differentiation.vue
index 1d5e0d7..5d1b690 100644
--- a/src/views/product/differentiation.vue
+++ b/src/views/product/differentiation.vue
@@ -48,20 +48,31 @@
               <h3>{{ activeStepName }}</h3>
             </div>
           </div>
-          <div class="step-content">
-            <label class="field-block">
-              <span>收集并分析当前智能健身镜市场的主要品牌、产品特点、用户评价：</span>
-              <textarea v-model="form.research.marketAnalysis" />
-            </label>
-            <label class="field-block">
-              <span>开展初步访谈或问卷调研，梳理潜在用户对智能健身设备的需求与痛点：</span>
-              <textarea v-model="form.research.userResearch" />
-            </label>
-            <label class="field-block">
-              <span>整理用户画像，明确目标用户群体特征：</span>
-              <textarea v-model="form.research.persona" />
-            </label>
+          <div class="core-pain-intro">
+            <p>价值主张的起点不是产品功能，而是用户痛点。不要试图满足所有人，只抓占 80% 的核心用户最痛的 3 个问题。</p>
+            <p>参考实训 11 的需求优先级评估结果，整理出 Top3 核心痛点，同时识别弱需求和伪需求——它们不作为核心价值主张，只作为加分项。</p>
+          </div>
+          <div class="core-pain-table-wrap">
+            <table class="core-pain-table">
+              <thead>
+                <tr>
+                  <th>序号</th>
+                  <th>需求类型</th>
+                  <th>需求描述</th>
+                  <th>场景描述</th>
+                </tr>
+              </thead>
+              <tbody>
+                <tr v-for="(row, index) in form.corePainRows" :key="row.id">
+                  <td>{{ index + 1 }}</td>
+                  <td class="pain-type-cell">{{ row.type }}</td>
+                  <td><textarea v-model="row.description" :placeholder="index === 0 ? '示例：入睡困难' : '填写需求描述'" :aria-label="`${row.type}需求描述`" /></td>
+                  <td><textarea v-model="row.scene" :placeholder="index === 0 ? '示例：高压职场人群睡前大脑兴奋难以切换到放松状态，传统吸顶灯只有冷白光切换，缺乏渐进式助眠的光环境引导，导致入睡时间平均超过40分钟' : '填写场景描述'" :aria-label="`${row.type}场景描述`" /></td>
+                </tr>
+              </tbody>
+            </table>
           </div>
+          <p v-if="corePainValidationMessage" class="core-pain-validation-message" role="status">{{ corePainValidationMessage }}</p>
         </section>
 
         <section v-show="isSectionVisible(2)" class="step-card">
@@ -202,14 +213,18 @@ import TrainingAiSidebar from "@/views/components/TrainingAiSidebar.vue";
 import TrainingMaterialButton from "@/views/components/TrainingMaterialButton.vue";
 import TrainingTaskBrief from "@/views/components/TrainingTaskBrief.vue";
 import { getTrainingTaskByKey } from "@/api/trainingTask";
-import { getStudentTrainingAnswer, saveStudentTrainingAnswer } from "@/api/studentTrainingAnswer";
+import { checkProductValuePositioningStepOne, getStudentTrainingAnswer, saveStudentTrainingAnswer } from "@/api/studentTrainingAnswer";
 import { parseTrainingArray } from "@/views/training/taskKeyMap";
 
 const TASK_KEY = "product-value-positioning";
 const { proxy } = getCurrentInstance();
 const saving = ref(false);
+const checkingCorePain = ref(false);
+const corePainValidationMessage = ref("");
 const taskConfig = ref(null);
 
+const corePainTypes = ["核心痛点1", "核心痛点2", "核心痛点3", "弱需求", "伪需求"];
+
 const defaultRequirement =
   "产品价值主张及定位需要在市场调研和用户洞察基础上，明确目标用户、核心价值、差异化优势和定位表达。";
 const defaultBackground =
@@ -224,6 +239,7 @@ const defaultGoals = [
 function createForm() {
   return {
     activeStep: 1,
+    corePainRows: corePainTypes.map((type, index) => ({ id: index + 1, type, description: "", scene: "" })),
     research: { marketAnalysis: "", userResearch: "", persona: "" },
     positionCanvas: { targetUsers: "", needsAndPains: "", competitorOpportunity: "" },
     valueCanvas: { customerJobs: "", pains: "", gains: "", products: "", painRelievers: "", gainCreators: "" },
@@ -277,20 +293,22 @@ function normalizeActiveStep(value) {
   return Math.min(Math.max(step, 1), configuredSteps.value.length);
 }
 
-function setCurrentStep(step) {
-  form.value.activeStep = normalizeActiveStep(step);
+async function setCurrentStep(step) {
+  const targetStep = normalizeActiveStep(step);
+  if (targetStep > form.value.activeStep && form.value.activeStep === 1 && !(await ensureCorePainValid())) return;
+  form.value.activeStep = targetStep;
 }
 
 function isSectionVisible(section) {
   return !hasConfiguredSteps.value || form.value.activeStep === section;
 }
 
-function goPreviousStep() {
-  setCurrentStep(form.value.activeStep - 1);
+async function goPreviousStep() {
+  await setCurrentStep(form.value.activeStep - 1);
 }
 
-function goNextStep() {
-  setCurrentStep(form.value.activeStep + 1);
+async function goNextStep() {
+  await setCurrentStep(form.value.activeStep + 1);
 }
 
 function applySavedAnswer(value) {
@@ -309,6 +327,7 @@ function normalizeForm(value = {}) {
     ...base,
     ...value,
     activeStep: normalizeActiveStep(value.activeStep),
+    corePainRows: normalizeCorePainRows(value.corePainRows),
     research: { ...base.research, ...(value.research || {}) },
     positionCanvas: { ...base.positionCanvas, ...(value.positionCanvas || {}) },
     valueCanvas: { ...base.valueCanvas, ...(value.valueCanvas || {}) },
@@ -316,6 +335,32 @@ function normalizeForm(value = {}) {
   };
 }
 
+function normalizeCorePainRows(rows = []) {
+  const savedRows = Array.isArray(rows) ? rows : [];
+  return corePainTypes.map((type, index) => ({
+    id: index + 1,
+    type,
+    description: String(savedRows[index]?.description || ""),
+    scene: String(savedRows[index]?.scene || ""),
+  }));
+}
+
+async function ensureCorePainValid() {
+  if (checkingCorePain.value) return false;
+  checkingCorePain.value = true;
+  try {
+    const response = await checkProductValuePositioningStepOne({ rows: form.value.corePainRows });
+    const result = response?.data || {};
+    corePainValidationMessage.value = result.message || (result.valid ? "核心痛点分类填写完整。" : "请完成 3 个核心痛点、弱需求和伪需求的描述与场景。");
+    return result.valid === true;
+  } catch (error) {
+    corePainValidationMessage.value = error?.message || "核心痛点校验失败，请稍后重试。";
+    return false;
+  } finally {
+    checkingCorePain.value = false;
+  }
+}
+
 function buildOutcome() {
   return {
     taskKey: TASK_KEY,
@@ -323,6 +368,7 @@ function buildOutcome() {
     taskName: taskTitle.value,
     currentStep: form.value.activeStep,
     configuredSteps: configuredSteps.value,
+    corePainRows: form.value.corePainRows,
     research: form.value.research,
     positionCanvas: form.value.positionCanvas,
     valueCanvas: form.value.valueCanvas,
@@ -341,10 +387,12 @@ function buildAnswerPayload(status) {
 
 async function persist(status = "IN_PROGRESS") {
   if (saving.value) return;
+  if (status !== "RESET" && form.value.activeStep === 1 && !(await ensureCorePainValid())) return false;
   saving.value = true;
   try {
     await saveStudentTrainingAnswer(TASK_KEY, buildAnswerPayload(status));
     proxy?.$modal?.msgSuccess(status === "SUBMITTED" ? "提交成功" : "保存成功");
+    return true;
   } finally {
     saving.value = false;
   }
@@ -723,6 +771,97 @@ function exportOutcome() {
 
 .value-grid .field-block { margin: 0; }
 
+.core-pain-intro {
+  margin-bottom: 18px;
+  padding: 16px 18px;
+  border-left: 3px solid #55ddff;
+  border-radius: 0 14px 14px 0;
+  background: linear-gradient(90deg, rgba(7, 92, 132, 0.28), rgba(5, 34, 51, 0.12));
+
+  p {
+    margin: 0;
+    color: #cae7f2;
+    font-size: 14px;
+    line-height: 1.8;
+  }
+
+  p + p { margin-top: 6px; }
+}
+
+.core-pain-table-wrap { overflow-x: auto; }
+
+.core-pain-table {
+  width: 100%;
+  min-width: 820px;
+  border-collapse: collapse;
+  table-layout: fixed;
+
+  th,
+  td {
+    border: 1px solid rgba(77, 167, 220, 0.28);
+    text-align: center;
+    vertical-align: middle;
+  }
+
+  th {
+    padding: 11px 10px;
+    color: #f5fcff;
+    background: linear-gradient(100deg, #0787bd, #075276);
+    font-size: 14px;
+    font-weight: 800;
+  }
+
+  td {
+    height: 84px;
+    padding: 9px;
+    color: #d7f1ff;
+    background: rgba(1, 14, 26, 0.48);
+  }
+
+  th:nth-child(1),
+  td:nth-child(1) { width: 7%; }
+  th:nth-child(2),
+  td:nth-child(2) { width: 15%; }
+  th:nth-child(3),
+  td:nth-child(3) { width: 32%; }
+
+  .pain-type-cell {
+    color: #b9e7f6;
+    font-weight: 800;
+    background: rgba(7, 62, 88, 0.46);
+  }
+
+  textarea {
+    display: block;
+    width: 100%;
+    height: 76px;
+    min-height: 52px;
+    padding: 10px;
+    border: 1px solid rgba(45, 95, 126, 0.95);
+    border-radius: 10px;
+    outline: none;
+    color: #eef5ff;
+    background: rgba(4, 24, 38, 0.72);
+    box-sizing: border-box;
+    font: inherit;
+    font-size: 13px;
+    line-height: 1.55;
+    resize: vertical;
+
+    &:focus {
+      border-color: rgba(92, 224, 255, 0.7);
+      box-shadow: 0 0 0 3px rgba(0, 174, 255, 0.13);
+    }
+  }
+}
+
+.core-pain-validation-message {
+  margin: 12px 0 0;
+  color: #ffab9d;
+  font-size: 13px;
+  font-weight: 800;
+}
+
 .step-navigation {
   display: flex;
   justify-content: center;