diff --git a/frontend/src/app/api/synastry/route.ts b/frontend/src/app/api/synastry/route.ts
index c4cfdf8c..39c4a1ee 100644
--- a/frontend/src/app/api/synastry/route.ts
+++ b/frontend/src/app/api/synastry/route.ts
@@ -68,6 +68,40 @@ function d9Summary(varga: Record<string, unknown>) {
   };
 }
 
+function planetSign(point: unknown) {
+  return point && typeof point === "object" && "sign" in point
+    ? String((point as Record<string, unknown>).sign || "unknown")
+    : "unknown";
+}
+
+function relationshipReport(synastry: Record<string, unknown>, selfD9: Record<string, unknown>, partnerD9: Record<string, unknown>) {
+  const total = Number(synastry.total_score ?? 0);
+  const max = Number(synastry.max_score ?? 36);
+  const ratio = max > 0 ? total / max : 0;
+  const band = ratio >= 0.72 ? "supportive" : ratio >= 0.5 ? "mixed" : "challenging";
+  const self = d9Summary(selfD9);
+  const partner = d9Summary(partnerD9);
+  return {
+    status: "evidence_summary",
+    scoreBand: band,
+    headline: band === "supportive"
+      ? "基础匹配度偏支持，但仍需结合现实互动与长期运势。"
+      : band === "mixed"
+        ? "基础匹配度中等，适合重点观察沟通节奏、价值观与关系承诺。"
+        : "基础匹配度偏谨慎，需要先处理冲突模式与现实条件。",
+    strengths: [
+      `Ashtakoot ${total}/${max}`,
+      `本人 D9 Moon：${planetSign(self.moon)}`,
+      `对方 D9 Moon：${planetSign(partner.moon)}`,
+    ],
+    risks: [
+      "这不是完整婚恋结论；尚未纳入双方 Dasha、UL/DK 与长期时机。",
+      `D9 Venus/Mars 需要继续解释：本人 ${planetSign(self.venus)}/${planetSign(self.mars)}，对方 ${planetSign(partner.venus)}/${planetSign(partner.mars)}。`,
+    ],
+    nextEvidence: ["双方 Dasha", "UL/DK", "D9 7宫/7主", "现实关系时间线"],
+  };
+}
+
 async function postPython(path: string, body: unknown) {
   const response = await fetch(`${apiBase}${path}`, {
     method: "POST",
@@ -113,6 +147,7 @@ export async function POST(request: Request) {
       selfChart: { moon: moonSummary(selfChart), d9: d9Summary(selfD9) },
       partnerChart: { moon: moonSummary(partnerChart), d9: d9Summary(partnerD9) },
       synastry,
+      relationshipReport: relationshipReport(synastry, selfD9, partnerD9),
     });
   } catch (error) {
     return NextResponse.json({
diff --git a/frontend/src/app/page.tsx b/frontend/src/app/page.tsx
index 0999b3ec..45d12f06 100644
--- a/frontend/src/app/page.tsx
+++ b/frontend/src/app/page.tsx
@@ -1256,7 +1256,7 @@ export default function Home() {
         headers: { "Content-Type": "application/json" },
         body: JSON.stringify({ selfProfile: profile, partnerProfile: record.profile }),
       });
-      const payload = await response.json().catch(() => null) as { status?: string; evidenceLayers?: string[]; synastry?: { total_score?: number; max_score?: number; assessment?: string } } | null;
+      const payload = await response.json().catch(() => null) as { status?: string; evidenceLayers?: string[]; synastry?: { total_score?: number; max_score?: number; assessment?: string }; relationshipReport?: { headline?: string } } | null;
       if (response.ok && payload?.status === "ok") {
         const score = payload.synastry?.total_score;
         const max = payload.synastry?.max_score;
@@ -1266,6 +1266,7 @@ export default function Home() {
           baseQuestion,
           "",
           `已计算基础合盘证据：${layers}；Ashtakoot ${score ?? "?"}/${max ?? "?"}，初步评级：${assessment || "待解释"}。请基于这个证据包继续分析。`,
+          payload.relationshipReport?.headline ? `结构化摘要：${payload.relationshipReport.headline}` : "",
         ].join("\n"), "marriage");
       } else {
         chooseSuggestedQuestion(baseQuestion, "marriage");
diff --git a/tests/test_supabase_user_data_contract.py b/tests/test_supabase_user_data_contract.py
index 0ae206d6..59a38232 100644
--- a/tests/test_supabase_user_data_contract.py
+++ b/tests/test_supabase_user_data_contract.py
@@ -168,6 +168,9 @@ def test_synastry_route_orchestrates_python_chart_and_ashtakoot() -> None:
         "moonLongitude(selfChart)",
         "moonSummary(selfChart)",
         "d9Summary(selfD9)",
+        "relationshipReport",
+        "scoreBand",
+        "nextEvidence",
         "ashtakoot_plus_moon_nakshatra_d9",
         'evidenceLayers: ["ashtakoot", "moon_nakshatra", "d9_navamsa"]',
         'status: "blocked"',