diff --git a/frontend/src/pages/qna/QnADetailPage.js b/frontend/src/pages/qna/QnADetailPage.js
index bb93229..8dbf4af 100644
--- a/frontend/src/pages/qna/QnADetailPage.js
+++ b/frontend/src/pages/qna/QnADetailPage.js
@@ -674,7 +674,7 @@ function QnADetailPage() {
                         placeholder="댓글을 입력해주세요..."
                         value={commentText}
                         onChange={e => setCommentText(e.target.value)}
-                        onKeyDown={e => { if (e.key === 'Enter') handleCommentSubmit(); }}
+                        onKeyDown={e => { if (e.key === 'Enter' && !e.nativeEvent.isComposing) handleCommentSubmit(); }}
                         onPaste={handlePaste}
                         disabled={isSubmitting}
                     />
diff --git a/frontend/src/pages/qna/QnAListPage.js b/frontend/src/pages/qna/QnAListPage.js
index 7f0e696..c0f0bf8 100644
--- a/frontend/src/pages/qna/QnAListPage.js
+++ b/frontend/src/pages/qna/QnAListPage.js
@@ -528,27 +528,9 @@ function QnAListPage() {
             if (!res.ok) throw new Error();
             const json = await res.json();
             if (json.isSuccess) {
-                if (isStaff) {
-                    await authFetch(`/api/questions/${questionId}/status`, { method: 'PATCH' });
-                }
-                const newComment = {
-                    commentId: json.result.commentId,
-                    displayName: json.result.displayName,
-                    content: json.result.content,
-                };
-                const update = (list) => list.map(q =>
-                    q.questionId === questionId
-                        ? {
-                            ...q,
-                            isResolved: isStaff ? true : q.isResolved,
-                            previewComments: [...(q.previewComments ?? []), newComment],
-                            commentCount: (q.commentCount ?? 0) + 1
-                        }
-                        : q
-                );
-                setPopularQuestions(update);
-                setUnresolvedQuestions(update);
-                setResolvedQuestions(update);
+                // NOTE: 댓글 작성으로 인한 '해결됨' 자동 전환 없음 (해결 처리는 운영진 수동 조작만 허용).
+                // previewComments / commentCount UI 갱신도 SSE comment-created 이벤트에서 단일 처리.
+                // 여기서 직접 상태를 업데이트하면 SSE 이벤트와 중복되어 댓글이 2개 표시되므로 제거.
                 setCommentInputs(prev => ({ ...prev, [questionId]: '' }));
                 setCommentImages(prev => ({ ...prev, [questionId]: [] }));
                 setCommentImagePreviews(prev => ({ ...prev, [questionId]: [] }));
@@ -790,7 +772,8 @@ function QnAListPage() {
             {/* ── 질문 목록 ── */}
             <div className={styles.questionList}>
                 {displayedQuestions.map(question => (
-                    <div key={question.questionId} className={styles.questionCard}
+                    <div key={question.questionId}
+                        className={`${styles.questionCard} ${question.isResolved ? styles.questionCardResolved : ''}`}
                         onClick={() => navigate(`/sessions/${sessionId}/questions/${question.questionId}`)}>
 
                         {/* 질문 헤더 */}
@@ -902,7 +885,7 @@ function QnAListPage() {
                                         placeholder="댓글을 입력해주세요..."
                                         value={commentInputs[question.questionId] || ''}
                                         onChange={e => handleCommentChange(question.questionId, e.target.value)}
-                                        onKeyDown={e => { if (e.key === 'Enter') handleCommentSubmit(e, question.questionId); }}
+                                        onKeyDown={e => { if (e.key === 'Enter' && !e.nativeEvent.isComposing) handleCommentSubmit(e, question.questionId); }}
                                         onPaste={e => handleCommentPaste(e, question.questionId)}
                                         autoFocus
                                     />
@@ -960,7 +943,7 @@ function QnAListPage() {
                             value={newQuestion}
                             onChange={e => setNewQuestion(e.target.value)}
                             onKeyDown={e => {
-                                if (e.key === 'Enter') isStaff ? handleNewUnderstandCheck() : handleNewQuestion();
+                                if (e.key === 'Enter' && !e.nativeEvent.isComposing) isStaff ? handleNewUnderstandCheck() : handleNewQuestion();
                             }}
                             onPaste={handleNewQuestionPaste}
                             disabled={isSubmitting}
diff --git a/frontend/src/pages/qna/QnAListPage.module.css b/frontend/src/pages/qna/QnAListPage.module.css
index 95ffedf..2570c0e 100644
--- a/frontend/src/pages/qna/QnAListPage.module.css
+++ b/frontend/src/pages/qna/QnAListPage.module.css
@@ -113,12 +113,14 @@
     display: flex;
     align-items: center;
     justify-content: space-between;
+    gap: 10px;
     border-radius: 10px;
     border: 1px solid var(--dark);
     background: var(--white);
     box-shadow: 1px 2px 3px 0 rgba(0, 0, 0, 0.25);
     width: 100%;
-    height: 56px;
+    min-height: 56px;
+    padding: 10px 16px;
     box-sizing: border-box;
 }
 
@@ -129,6 +131,8 @@
     color: var(--gray600);
     display: flex;
     align-items: center;
+    align-self: center;
+    flex-shrink: 0;
     padding: 0;
     line-height: 1;
 }
@@ -145,12 +149,15 @@
     font-size: 24px;
     font-weight: 500;
     color: var(--black);
+    line-height: 1.4;
+    word-break: keep-all;
 }
 
 .understandCount {
     font-weight: 300;
     color: var(--black);
     font-size: 18px;
+    white-space: nowrap;
 }
 
 /* ── O/X 버튼 ── */
@@ -209,19 +216,32 @@
 .questionCard {
     padding: 14px 16px;
     cursor: pointer;
-    transition: box-shadow 0.2s;
+    transition: box-shadow 0.2s, background-color 0.2s, opacity 0.2s, border-color 0.2s;
     border-radius: 30px;
     background: var(--white);
+    border: 1px solid var(--main);
     box-shadow: 1px 2px 3px 0 rgba(0, 0, 0, 0.25);
     width: 95%;
     box-sizing: border-box;
     min-height: 40px;
 }
 
+/* 해결된 질문: 미해결 질문과 한눈에 구분되도록 배경을 연한 회색으로 + 카드 전체를 흐리게 처리 (초록 테두리는 미해결 질문 전용이므로 제외) */
+.questionCardResolved {
+    background: var(--gray50);
+    opacity: 0.6;
+    border-color: transparent;
+    box-shadow: 1px 2px 3px 0 rgba(0, 0, 0, 0.25);
+}
+
 .questionCard:hover {
     box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.15);
 }
 
+.questionCardResolved:hover {
+    box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.15);
+}
+
 .questionHeader {
     display: flex;
     align-items: center;
@@ -661,10 +681,8 @@
 
     /* ── 이해도 바 ── */
     .understandBar {
-        height: auto;
         min-height: 48px;
         padding: 8px 10px;
-        flex-wrap: wrap;
     }
 
     .understandName {