diff --git a/frontend/src/app/globals.css b/frontend/src/app/globals.css
index d19ecbc7..e665c9a2 100644
--- a/frontend/src/app/globals.css
+++ b/frontend/src/app/globals.css
@@ -840,9 +840,6 @@ input:disabled, select:disabled { color: var(--color-ink-tertiary); background:
   .conversational-composer-footer button, .conversational-confirmation button, .conversational-original-question button { width: 100%; }
 }
 
-/* Rectification reuses the ordinary session message list and composer. */
-.rectification-chat { display: contents; }
-
 /* Starter workbench */
 .welcome {
   width: min(1040px, 100%);
diff --git a/frontend/src/app/page.tsx b/frontend/src/app/page.tsx
index 355ebd77..18f7f1fa 100644
--- a/frontend/src/app/page.tsx
+++ b/frontend/src/app/page.tsx
@@ -2841,8 +2841,9 @@ export default function Home() {
           </button>
           </header>
 
-        <div className={`conversation ${rectificationSurfaceOpen || activeSession?.messages.length ? "" : "is-empty"}`}>
-          {!rectificationSurfaceOpen && (!activeSession?.messages.length ? (
+        {!rectificationSurfaceOpen && (
+          <div className={`conversation ${activeSession?.messages.length ? "" : "is-empty"}`}>
+            {!activeSession?.messages.length ? (
             <div className="welcome">
               {!profileComplete ? (
                 <>
@@ -3024,19 +3025,21 @@ export default function Home() {
               {activeError && <p className="error-message">{activeError}</p>}
               <div ref={conversationEnd} />
             </div>
-          ))}
-          {rectificationSurfaceOpen && (
-            <ConversationalBirthTimeRectification
-              models={modelCatalog?.models ?? []}
-              selectedModelId={activeSession?.modelId ?? ""}
-              onSelectModel={(modelId) => void selectSessionModel(modelId)}
-              pendingConsultationQuestion={rectificationPendingQuestion}
-              continuationPending={rectificationContinuationPending}
-              onPendingChange={setRectificationMutationPending}
-              onContinueOriginalQuestion={(continuation) => void continueRectificationOriginalQuestion(continuation)}
-            />
-          )}
-        </div>
+            )}
+          </div>
+        )}
+
+        {rectificationSurfaceOpen && (
+          <ConversationalBirthTimeRectification
+            models={modelCatalog?.models ?? []}
+            selectedModelId={activeSession?.modelId ?? ""}
+            onSelectModel={(modelId) => void selectSessionModel(modelId)}
+            pendingConsultationQuestion={rectificationPendingQuestion}
+            continuationPending={rectificationContinuationPending}
+            onPendingChange={setRectificationMutationPending}
+            onContinueOriginalQuestion={(continuation) => void continueRectificationOriginalQuestion(continuation)}
+          />
+        )}
 
         {!rectificationSurfaceOpen && <div className={`composer-wrap ${starterHomeVisible ? "composer-wrap-starter" : ""}`}>
           {activeSuggestions.length > 0 && (
diff --git a/frontend/src/components/rectification-v4-panel.tsx b/frontend/src/components/rectification-v4-panel.tsx
index 9b00e1ee..53b64b3b 100644
--- a/frontend/src/components/rectification-v4-panel.tsx
+++ b/frontend/src/components/rectification-v4-panel.tsx
@@ -186,12 +186,14 @@ export function RectificationV4Panel(props: RectificationV4PanelProps) {
   }
 
   return (
-    <section className="rectification-chat" aria-label="生时校正对话" aria-busy={processing || controller.pending}>
-      <div className="message-list" aria-live="polite">
-        {messages.map((message) => <ChatMessageRow key={message.renderKey} message={message} />)}
-        {controller.error && <p className="error-message" role="alert">{controller.error}</p>}
-        <div ref={conversationEnd} />
-      </div>
+    <>
+      <section className="conversation" aria-label="生时校正对话" aria-busy={processing || controller.pending}>
+        <div className="message-list" aria-live="polite">
+          {messages.map((message) => <ChatMessageRow key={message.renderKey} message={message} />)}
+          {controller.error && <p className="error-message" role="alert">{controller.error}</p>}
+          <div ref={conversationEnd} />
+        </div>
+      </section>
 
       {showControls && (
         <div className="composer-wrap">
@@ -247,6 +249,6 @@ export function RectificationV4Panel(props: RectificationV4PanelProps) {
           </div>
         </div>
       )}
-    </section>
+    </>
   );
 }
diff --git a/frontend/tests/conversational-rectification-component.test.ts b/frontend/tests/conversational-rectification-component.test.ts
index ee55f493..a9a20504 100644
--- a/frontend/tests/conversational-rectification-component.test.ts
+++ b/frontend/tests/conversational-rectification-component.test.ts
@@ -68,6 +68,10 @@ test("v4 rectification reuses the ordinary session message list, composer, and m
   const page = readFileSync(new URL("../src/app/page.tsx", import.meta.url), "utf8");
   const css = readFileSync(new URL("../src/app/globals.css", import.meta.url), "utf8");
 
+  assert.match(
+    component,
+    /<>\s*<section className="conversation"[\s\S]*?<\/section>\s*\{showControls && \(\s*<div className="composer-wrap"/,
+  );
   assert.match(component, /className="message-list"/);
   assert.match(component, /<ChatMessageRow/);
   assert.match(component, /className="composer-wrap"/);
@@ -76,9 +80,11 @@ test("v4 rectification reuses the ordinary session message list, composer, and m
   assert.match(component, /<ModelSelector/);
   assert.match(component, /controller\.answer\(answer, props\.selectedModelId \|\| null\)/);
   assert.match(wrapper, /<RectificationV4Panel \{\.\.\.props\} \/>/);
-  assert.match(page, /rectificationSurfaceOpen \|\| activeSession\?\.messages\.length/);
+  assert.match(page, /\{!rectificationSurfaceOpen && \(\s*<div className=\{`conversation/);
+  assert.match(page, /\{rectificationSurfaceOpen && \(\s*<ConversationalBirthTimeRectification/);
   assert.doesNotMatch(page, /is-rectification/);
-  assert.match(css, /\.rectification-chat \{ display: contents; \}/);
+  assert.doesNotMatch(component, /rectification-chat/);
+  assert.doesNotMatch(css, /\.rectification-chat/);
 });
 
 test("turn history and the context-aware next question render as one chat timeline", () => {