diff --git a/frontend/scripts/verify-ui-contract.mjs b/frontend/scripts/verify-ui-contract.mjs
index 52d3c5fa..b96a301f 100644
--- a/frontend/scripts/verify-ui-contract.mjs
+++ b/frontend/scripts/verify-ui-contract.mjs
@@ -54,6 +54,19 @@ for (const file of pageContractChecks) {
   }
 }
 
+const overview = readFileSync("src/views/ia/ProjectOverview.vue", "utf8");
+const requiredOverviewClasses = [
+  "ctms-page-shell",
+  "kpi",
+  "unified-section"
+];
+
+for (const className of requiredOverviewClasses) {
+  if (!overview.includes(className)) {
+    missing.push(`src/views/ia/ProjectOverview.vue:${className}`);
+  }
+}
+
 if (missing.length) {
   console.error("UI contract check failed. Missing:", missing.join(", "));
   process.exit(1);
diff --git a/frontend/src/components/KpiCard.vue b/frontend/src/components/KpiCard.vue
index 9f6c8dfa..21cf3559 100644
--- a/frontend/src/components/KpiCard.vue
+++ b/frontend/src/components/KpiCard.vue
@@ -1,5 +1,5 @@
 <template>
-  <div class="kpi-card" :class="[`type-${type}`]">
+  <article class="kpi-card kpi-enterprise" :class="[`type-${type}`]">
     <!-- 顶部标签区域 -->
     <div class="kpi-badge">
       <div class="kpi-badge-icon" v-if="icon">
@@ -30,7 +30,7 @@
         </template>
       </div>
     </div>
-  </div>
+  </article>
 </template>
 
 <script setup lang="ts">
diff --git a/frontend/src/styles/unified-page.css b/frontend/src/styles/unified-page.css
index 507f9373..1fb2c51a 100644
--- a/frontend/src/styles/unified-page.css
+++ b/frontend/src/styles/unified-page.css
@@ -188,6 +188,21 @@
   color: var(--unified-muted-color);
 }
 
+.unified-shell .kpi-enterprise {
+  min-height: 132px;
+  border-radius: 14px;
+  padding: 16px;
+}
+
+.unified-shell .kpi-enterprise .kpi-title {
+  font-size: 16px;
+  line-height: 1.25;
+}
+
+.unified-shell .kpi-enterprise .kpi-value {
+  font-size: 34px;
+}
+
 @media (max-width: 960px) {
   .unified-action-bar,
   .unified-section {
diff --git a/frontend/src/views/ia/ProjectOverview.vue b/frontend/src/views/ia/ProjectOverview.vue
index 6145b2ea..4d917cf4 100644
--- a/frontend/src/views/ia/ProjectOverview.vue
+++ b/frontend/src/views/ia/ProjectOverview.vue
@@ -1,7 +1,21 @@
 <template>
-  <div class="page">
+  <div class="page ctms-page-shell">
     <div v-if="study.currentStudy" class="page-body">
-      <div class="unified-shell">
+      <div class="unified-shell ctms-table-card">
+        <section class="unified-section">
+          <div class="kpi-grid">
+            <KpiCard
+              v-for="item in kpiItems"
+              :key="item.key"
+              class="kpi"
+              :title="item.title"
+              :value="item.value"
+              :subtext="item.subtext"
+              :type="item.type"
+            />
+          </div>
+        </section>
+
         <section class="unified-section">
           <div class="overview-meta-inline">
             <el-tag v-if="usingDemo" effect="plain" type="info" class="demo-tag">示例数据</el-tag>
@@ -69,6 +83,7 @@ import { fetchProjectOverview } from "../../api/overview";
 import { fetchSites } from "../../api/sites";
 import StateEmpty from "../../components/StateEmpty.vue";
 import StateLoading from "../../components/StateLoading.vue";
+import KpiCard from "../../components/KpiCard.vue";
 import CenterProgressRow from "./project-overview/CenterProgressRow.vue";
 import EnrollmentBarChart, { type EnrollmentBarItem } from "./project-overview/EnrollmentBarChart.vue";
 import { adaptProjectOverview, type CenterOverview, type ProjectOverviewViewModel } from "./project-overview/overview.adapter";
@@ -84,6 +99,35 @@ const updatedAtLabel = ref(displayDateTime(new Date()));
 const preferApi = String(import.meta.env.VITE_USE_OVERVIEW_API || "").toLowerCase() === "true";
 
 const centers = computed(() => overview.value?.centers || []);
+const kpiItems = computed(() => {
+  const summary = overview.value?.summary;
+  const totalTarget = summary?.total_target ?? 0;
+  const totalActual = summary?.total_actual ?? 0;
+  const activeCenters = centers.value.filter((item) => item.is_active !== false).length;
+  return [
+    {
+      key: "target",
+      title: "总入组目标",
+      value: totalTarget,
+      subtext: "项目整体计划",
+      type: "primary" as const,
+    },
+    {
+      key: "actual",
+      title: "当前入组",
+      value: totalActual,
+      subtext: `达成率 ${totalTarget > 0 ? Math.round((totalActual / totalTarget) * 100) : 0}%`,
+      type: "success" as const,
+    },
+    {
+      key: "centers",
+      title: "活跃中心",
+      value: activeCenters,
+      subtext: `中心总数 ${centers.value.length}`,
+      type: "info" as const,
+    },
+  ];
+});
 
 const buildFallbackCentersFromSites = (siteList: any[]): CenterOverview[] =>
   siteList.map((site: any) => ({
@@ -208,6 +252,12 @@ watch(
   gap: 0;
 }
 
+.kpi-grid {
+  display: grid;
+  gap: 12px;
+  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
+}
+
 .demo-tag {
   border-color: var(--ctms-border-color);
   color: var(--ctms-text-secondary);