diff --git a/src/components/assistant/AssistantResponseCard.vue b/src/components/assistant/AssistantResponseCard.vue
index d08bf81..c2a7e14 100644
--- a/src/components/assistant/AssistantResponseCard.vue
+++ b/src/components/assistant/AssistantResponseCard.vue
@@ -8,6 +8,7 @@ import {
   CheckCircle2,
   ClipboardCheck,
   PackageSearch,
+  Ruler,
   Sparkles,
 } from "@lucide/vue";
 import { computed, ref } from "vue";
@@ -196,8 +197,17 @@ function formatCount(value: unknown) {
 
     <template v-else>
       <div class="solution-base"><b>分析基础：</b>{{ data.analysisBase }}</div>
-      <section v-if="data.standards?.length" class="solution-section">
-        <h4><BookOpenCheck :size="14" /> 标准兜底校验</h4>
+      <section
+        v-if="data.standardFallbackEnabled || data.standards?.length"
+        class="solution-section"
+      >
+        <h4>
+          <Ruler :size="14" />
+          <span v-if="data.standardFallbackEnabled"
+            >标准兜底校验（无历史案例时启用）</span
+          >
+          <span v-else>关联标准校验</span>
+        </h4>
         <div
           v-for="standard in data.standards"
           :key="`${standard.category}-${standard.riskPoint}`"
@@ -210,6 +220,9 @@ function formatCount(value: unknown) {
           </div>
           <strong>{{ standard.status }}</strong>
         </div>
+        <p v-if="!data.standards?.length" class="empty">
+          当前标准库暂无可匹配规则，请补充产品品类、包材或检测指标。
+        </p>
       </section>
       <section v-if="data.risks?.length" class="solution-section risk-list">
         <div v-for="risk in data.risks" :key="risk.title" class="solution-risk">
diff --git a/src/components/assistant/RiskAnalysisCard.vue b/src/components/assistant/RiskAnalysisCard.vue
index f6a6c19..474bac6 100644
--- a/src/components/assistant/RiskAnalysisCard.vue
+++ b/src/components/assistant/RiskAnalysisCard.vue
@@ -22,6 +22,15 @@ const props = defineProps<{
 const expanded = ref(true);
 const feedback = ref("");
 
+interface DimensionView {
+  name: string;
+  score: number;
+  weight: string;
+  tone: string;
+  status?: string;
+  reason?: string | null;
+}
+
 function notify(label: string) {
   feedback.value = `${label}功能将在对应模块接入后执行`;
   window.setTimeout(() => (feedback.value = ""), 2600);
@@ -34,19 +43,29 @@ function copyScore() {
   notify("评分已复制");
 }
 
-const dimensions = computed(() =>
+const dimensions = computed<DimensionView[]>(() =>
   (props.result.dimensionScores?.length
-    ? props.result.dimensionScores
+    ? props.result.dimensionScores.map((item) => ({
+        dimension: item.dimension,
+        score: item.score,
+        weight: item.weight,
+        status: item.status,
+        reason: item.reason,
+      }))
     : props.result.factors.map((factor) => ({
         dimension: factor.name,
         score: Math.max(0, Math.round(100 - factor.value)),
         weight: factor.weight,
+        status: undefined,
+        reason: undefined,
       }))
   ).map((item) => ({
     name: item.dimension,
     score: Math.round(item.score),
     weight: `${item.weight}%`,
     tone: item.score < 40 ? "danger" : item.score < 60 ? "warning" : "success",
+    status: item.status,
+    reason: item.reason,
   })),
 );
 const suggestions = computed(() =>
@@ -195,7 +214,8 @@ const stars = computed(() => {
             </div>
             <small
               ><b>{{ item.score }}</b
-              >分 · {{ item.weight }}</small
+              >分 · {{ item.weight }}
+              <em v-if="item.status === 'default'">默认</em></small
             >
           </div>
         </div>
diff --git a/src/components/risk/RiskAssessmentForm.vue b/src/components/risk/RiskAssessmentForm.vue
index beab4b8..86c7f2f 100644
--- a/src/components/risk/RiskAssessmentForm.vue
+++ b/src/components/risk/RiskAssessmentForm.vue
@@ -1,8 +1,8 @@
 <script setup lang="ts">
-import { Plus, ShieldCheck, Trash2 } from "@lucide/vue";
+import { ShieldCheck } from "@lucide/vue";
 import { reactive } from "vue";
 
-import type { RiskAssessmentRequest, RiskIndicator } from "@/types/risk";
+import type { RiskAssessmentRequest } from "@/types/risk";
 
 defineProps<{ loading: boolean }>();
 
@@ -10,111 +10,99 @@ const emit = defineEmits<{
   submit: [payload: RiskAssessmentRequest];
 }>();
 
-const form = reactive<RiskAssessmentRequest>({
-  subjectId: "customer-001",
-  indicators: [
-    { name: "historicalDefault", value: 28, weight: 4 },
-    { name: "debtBurden", value: 52, weight: 3 },
-    { name: "cashflowVolatility", value: 36, weight: 3 },
-  ],
+const form = reactive({
+  subjectId: "脱毛膏 100g 新品",
+  productCategory: "脱毛膏",
+  materialType: "PE软管",
+  supplier: "瑞沣",
+  factory: "",
+  stageNew: "第三阶段（产品开发）",
+  defectLevel: "",
 });
 
-function addIndicator() {
-  form.indicators.push({
-    name: `indicator${form.indicators.length + 1}`,
-    value: 0,
-    weight: 1,
-  });
-}
-
-function removeIndicator(index: number) {
-  if (form.indicators.length > 1) form.indicators.splice(index, 1);
-}
-
 function submit() {
-  const indicators: RiskIndicator[] = form.indicators.map((item) => ({
-    ...item,
-  }));
-  emit("submit", { subjectId: form.subjectId, indicators });
+  emit("submit", {
+    subjectId: form.subjectId,
+    indicators: [],
+    productCategory: form.productCategory || null,
+    materialType: form.materialType || null,
+    supplier: form.supplier || null,
+    factory: form.factory || null,
+    stageNew: form.stageNew || null,
+    defectLevel: form.defectLevel || null,
+  });
 }
 </script>
 
 <template>
   <form class="assessment-form" @submit.prevent="submit">
-    <div class="field-group">
-      <label for="subject-id">评估对象</label>
-      <input
-        id="subject-id"
-        v-model.trim="form.subjectId"
-        required
-        maxlength="128"
-      />
+    <div class="form-intro">
+      <strong>新品风险参数</strong>
+      <span>系统将结合近 3 年异常案例计算七维安全评分</span>
     </div>
-
-    <div class="indicator-heading">
-      <div>
-        <strong>风险指标</strong>
-        <span>指标值范围 0-100</span>
-      </div>
-      <button
-        class="button button--secondary"
-        type="button"
-        @click="addIndicator"
-      >
-        <Plus :size="16" />
-        添加指标
-      </button>
+    <div class="form-grid">
+      <label class="field-wide">
+        评估对象 *
+        <input v-model.trim="form.subjectId" required maxlength="128" />
+      </label>
+      <label>
+        产品品类 *
+        <input
+          v-model.trim="form.productCategory"
+          required
+          maxlength="100"
+          placeholder="如：洗发水、面霜、脱毛膏"
+        />
+      </label>
+      <label>
+        包装材质 *
+        <input
+          v-model.trim="form.materialType"
+          required
+          maxlength="200"
+          placeholder="如：PET瓶、PE软管、泵头"
+        />
+      </label>
+      <label>
+        供应商
+        <input
+          v-model.trim="form.supplier"
+          maxlength="300"
+          placeholder="可填写已知供应商或新供应商"
+        />
+      </label>
+      <label>
+        加工厂
+        <input
+          v-model.trim="form.factory"
+          maxlength="300"
+          placeholder="如：博元、瑞沣"
+        />
+      </label>
+      <label>
+        开发阶段
+        <select v-model="form.stageNew">
+          <option>第一阶段（需求发现）</option>
+          <option>第二阶段（产品立项）</option>
+          <option>第三阶段（产品开发）</option>
+          <option>第四阶段（量产上市）</option>
+          <option>第五阶段（产品生命管理）</option>
+        </select>
+      </label>
+      <label>
+        已知缺陷等级
+        <select v-model="form.defectLevel">
+          <option value="">暂无</option>
+          <option>A</option>
+          <option>B</option>
+          <option>C</option>
+        </select>
+      </label>
     </div>
-
-    <div class="indicator-table">
-      <div class="indicator-table__header" aria-hidden="true">
-        <span>指标名称</span>
-        <span>指标值</span>
-        <span>权重</span>
-        <span></span>
-      </div>
-      <div
-        v-for="(indicator, index) in form.indicators"
-        :key="index"
-        class="indicator-row"
-      >
-        <input
-          v-model.trim="indicator.name"
-          required
-          maxlength="64"
-          aria-label="指标名称"
-        />
-        <input
-          v-model.number="indicator.value"
-          required
-          type="number"
-          min="0"
-          max="100"
-          step="0.1"
-          aria-label="指标值"
-        />
-        <input
-          v-model.number="indicator.weight"
-          required
-          type="number"
-          min="0.1"
-          max="100"
-          step="0.1"
-          aria-label="权重"
-        />
-        <button
-          class="icon-button"
-          type="button"
-          title="删除指标"
-          aria-label="删除指标"
-          :disabled="form.indicators.length === 1"
-          @click="removeIndicator(index)"
-        >
-          <Trash2 :size="16" />
-        </button>
-      </div>
+    <div class="data-note">
+      <span class="data-note__dot"></span>
+      缺少巡检或检测判定数据的维度，将按 PRD 中性值 50 分计入并标注。
     </div>
-
     <button
       class="button button--primary submit-button"
       type="submit"
@@ -129,99 +117,82 @@ function submit() {
 <style scoped>
 .assessment-form {
   display: grid;
-  gap: 22px;
+  gap: 20px;
 }
-
-.field-group,
-.indicator-heading div {
+.form-intro {
   display: grid;
-  gap: 7px;
+  gap: 3px;
+  border-bottom: 1px solid var(--color-border-light);
+  padding-bottom: 14px;
 }
-
-label,
-.indicator-heading strong {
+.form-intro strong {
   color: var(--color-text);
-  font-size: 13px;
-  font-weight: 700;
+  font-size: 15px;
 }
-
-.field-group input {
-  width: min(420px, 100%);
-}
-
-.indicator-heading {
-  display: flex;
-  align-items: end;
-  justify-content: space-between;
-  gap: 16px;
-}
-
-.indicator-heading span {
-  color: var(--color-text-muted);
-  font-size: 12px;
-}
-
-.indicator-table {
-  overflow: hidden;
-  border: 1px solid var(--color-border);
-  border-radius: 6px;
-}
-
-.indicator-table__header,
-.indicator-row {
-  display: grid;
-  grid-template-columns:
-    minmax(180px, 1.5fr) minmax(100px, 0.7fr) minmax(90px, 0.6fr)
-    42px;
-  gap: 10px;
-  align-items: center;
-  padding: 10px 12px;
-}
-
-.indicator-table__header {
-  background: var(--color-surface-muted);
+.form-intro span {
   color: var(--color-text-muted);
   font-size: 11px;
+}
+.form-grid {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 15px;
+}
+label {
+  display: grid;
+  gap: 6px;
+  color: var(--color-text);
+  font-size: 12px;
   font-weight: 700;
-  text-transform: uppercase;
 }
-
-.indicator-row + .indicator-row {
-  border-top: 1px solid var(--color-border);
+.field-wide {
+  grid-column: 1 / -1;
 }
-
-.indicator-row input {
+input,
+select {
   width: 100%;
+  min-height: 38px;
+  border: 1px solid var(--color-border-strong);
+  border-radius: 5px;
+  padding: 0 10px;
+  background: white;
+  color: var(--color-text);
+  font-size: 13px;
+}
+input:focus,
+select:focus {
+  border-color: var(--color-accent);
+  outline: 2px solid var(--color-accent-subtle);
+  outline-offset: 0;
+}
+.data-note {
+  display: flex;
+  align-items: center;
+  gap: 7px;
+  border: 1px solid var(--color-warning-border);
+  border-radius: 5px;
+  padding: 9px 10px;
+  background: var(--color-warning-soft);
+  color: #92400e;
+  font-size: 10px;
+  line-height: 1.5;
+}
+.data-note__dot {
+  width: 6px;
+  height: 6px;
+  flex: 0 0 6px;
+  border-radius: 50%;
+  background: var(--color-warning);
 }
-
 .submit-button {
   justify-self: start;
 }
-
 @media (max-width: 620px) {
-  .indicator-heading {
-    align-items: stretch;
-    flex-direction: column;
+  .form-grid {
+    grid-template-columns: 1fr;
   }
-
-  .indicator-table__header {
-    display: none;
-  }
-
-  .indicator-row {
-    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 34px;
-    gap: 6px;
-    padding: 10px 8px;
-  }
-
-  .indicator-row input:first-child {
-    grid-column: 1 / 3;
-  }
-
-  .indicator-row .icon-button {
-    grid-column: 3;
-    grid-row: 1 / 3;
-    align-self: center;
+  .field-wide {
+    grid-column: auto;
   }
 }
 </style>
diff --git a/src/components/risk/RiskResultPanel.vue b/src/components/risk/RiskResultPanel.vue
index 06d7cad..47c22a7 100644
--- a/src/components/risk/RiskResultPanel.vue
+++ b/src/components/risk/RiskResultPanel.vue
@@ -1,10 +1,23 @@
 <script setup lang="ts">
 import { BarChart3 } from "@lucide/vue";
+import { computed } from "vue";
 
 import RiskBadge from "@/components/common/RiskBadge.vue";
-import type { RiskAssessmentResult } from "@/types/risk";
+import type { RiskAssessmentResult, RiskDimensionScore } from "@/types/risk";
 
-defineProps<{ result: RiskAssessmentResult | null; error: string | null }>();
+const props = defineProps<{
+  result: RiskAssessmentResult | null;
+  error: string | null;
+}>();
+const dimensions = computed<RiskDimensionScore[]>(() =>
+  props.result?.dimensionScores?.length
+    ? props.result.dimensionScores
+    : (props.result?.factors ?? []).map((factor) => ({
+        dimension: factor.name,
+        score: Math.max(0, Math.round(100 - factor.value)),
+        weight: factor.weight,
+      })),
+);
 </script>
 
 <template>
@@ -32,18 +45,24 @@ defineProps<{ result: RiskAssessmentResult | null; error: string | null }>();
           <dt>模型</dt>
           <dd>{{ result.modelVersion }}</dd>
         </div>
+        <div>
+          <dt>数据口径</dt>
+          <dd>异常案例库 + 缺失值兜底</dd>
+        </div>
       </dl>
       <div class="factor-list">
         <div
-          v-for="factor in result.factors"
-          :key="factor.name"
+          v-for="factor in dimensions"
+          :key="factor.dimension"
           class="factor-row"
+          :title="factor.reason || undefined"
         >
-          <span>{{ factor.name }}</span>
+          <span>{{ factor.dimension }}</span>
           <div class="factor-bar">
-            <i :style="{ width: `${factor.value}%` }"></i>
+            <i :style="{ width: `${factor.score}%` }"></i>
           </div>
-          <strong>{{ factor.contribution.toFixed(1) }}</strong>
+          <strong>{{ Math.round(factor.score) }}<small>分</small></strong>
+          <em v-if="factor.status === 'default'">默认</em>
         </div>
       </div>
     </div>
@@ -147,6 +166,22 @@ dd {
   text-align: right;
 }
 
+.factor-row > strong small {
+  margin-left: 2px;
+  color: var(--color-text-muted);
+  font-size: 10px;
+  font-weight: 500;
+}
+
+.factor-row > em {
+  border-radius: 3px;
+  padding: 2px 4px;
+  background: var(--color-warning-soft);
+  color: var(--color-warning);
+  font-size: 9px;
+  font-style: normal;
+}
+
 .factor-bar {
   height: 6px;
   overflow: hidden;
diff --git a/src/pages/RiskAssistantPage.vue b/src/pages/RiskAssistantPage.vue
index 27bc3b7..088704d 100644
--- a/src/pages/RiskAssistantPage.vue
+++ b/src/pages/RiskAssistantPage.vue
@@ -180,13 +180,17 @@ function formatMessageTime(value: string) {
 function loadOlder() {
   const node = scrollArea.value;
   const before = node?.scrollHeight ?? 0;
-  void conversationStore.loadOlder().then((loaded) => {
-    if (loaded && node) node.scrollTop = node.scrollHeight - before;
+  const beforeTop = node?.scrollTop ?? 0;
+  void conversationStore.loadOlder().then(async (loaded) => {
+    if (loaded && node) {
+      await nextTick();
+      node.scrollTop = node.scrollHeight - before + beforeTop;
+    }
   });
 }
 
 function handleScroll() {
-  if (scrollArea.value && scrollArea.value.scrollTop < 60) loadOlder();
+  if (scrollArea.value && scrollArea.value.scrollTop <= 80) loadOlder();
 }
 
 async function openFromRoute() {
@@ -249,14 +253,9 @@ async function scrollToBottom(behavior: "smooth" | "auto" = "smooth") {
       @scroll.passive="handleScroll"
     >
       <div class="conversation-column">
-        <button
-          v-if="conversation?.hasMoreMessages"
-          class="load-older"
-          type="button"
-          @click="loadOlder"
-        >
-          {{ conversationStore.loadingOlder ? "加载中…" : "加载更早消息" }}
-        </button>
+        <p v-if="conversationStore.loadingOlder" class="history-loading">
+          正在加载更早消息…
+        </p>
         <AssistantWelcome
           v-if="!conversation?.messages.length"
           @select="usePrompt"
@@ -440,15 +439,11 @@ async function scrollToBottom(behavior: "smooth" | "auto" = "smooth") {
   gap: 18px;
 }
 
-.load-older {
+.history-loading {
   align-self: center;
-  border: 1px solid var(--color-border);
-  border-radius: 999px;
-  padding: 6px 12px;
-  background: var(--color-surface);
   color: var(--color-text-muted);
   font-size: 11px;
-  cursor: pointer;
+  line-height: 1.4;
 }
 
 .message {
diff --git a/src/types/risk.ts b/src/types/risk.ts
index 8b69ddf..82eeaed 100644
--- a/src/types/risk.ts
+++ b/src/types/risk.ts
@@ -9,13 +9,29 @@ export interface RiskIndicator {
 
 export interface RiskAssessmentRequest {
   subjectId: string;
-  indicators: RiskIndicator[];
+  indicators?: RiskIndicator[];
+  productCategory?: string | null;
+  materialType?: string | null;
+  supplier?: string | null;
+  factory?: string | null;
+  stageNew?: string | null;
+  defectLevel?: string | null;
 }
 
 export interface RiskFactorResult extends RiskIndicator {
   contribution: number;
 }
 
+export interface RiskDimensionScore {
+  dimension: string;
+  score: number;
+  weight: number;
+  status?: string;
+  reason?: string | null;
+  sampleSize?: number | null;
+  rawValue?: number | null;
+}
+
 export interface RiskAssessmentResult {
   subjectId: string;
   score: number;
@@ -54,11 +70,7 @@ export interface RiskAssessmentResult {
     source: string | null;
     status: string;
   }>;
-  dimensionScores?: Array<{
-    dimension: string;
-    score: number;
-    weight: number;
-  }>;
+  dimensionScores?: RiskDimensionScore[];
 }
 
 export interface ModelInfo {