diff --git a/backend/services/langchain_service.py b/backend/services/langchain_service.py
index c7cdfe5..006a51b 100644
--- a/backend/services/langchain_service.py
+++ b/backend/services/langchain_service.py
@@ -92,17 +92,29 @@ class LangChainRAGService:
     def _setup_rag_chain(self):
         """RAG 체인 설정"""
         try:
-            # 프롬프트 템플릿
+            # 개선된 프롬프트 템플릿
             prompt_template = """
-            다음 문서들을 참고하여 질문에 답변해주세요.
-            
-            문서들:
-            {context}
-            
-            질문: {input}
-            
-            답변: 문서의 내용을 바탕으로 정확하고 상세하게 답변해주세요.
-            """
+        당신은 연구 문서 전문가입니다. 주어진 문서들을 바탕으로 사용자의 질문에 정확하고 상세하게 답변해주세요.
+        
+        **절대 지켜야 할 답변 규칙:**
+        1. 답변은 반드시 한국어로만 시작하세요
+        2. 영어 단어나 문장을 절대 사용하지 마세요
+        3. <think>부터 </think>까지의 모든 내용을 절대 포함하지 마세요
+        4. 사고 과정, 분석 과정, 고민 과정을 전혀 보여주지 마세요
+        5. 바로 최종 답변만 제공하세요
+        6. 문서의 내용을 정확히 파악하고 요약하여 답변하세요
+        7. 구체적인 절차나 방법이 있다면 단계별로 설명하세요
+        8. 중요한 정보나 주의사항이 있다면 강조하세요
+        9. 문서에 없는 내용은 추측하지 말고 "문서에 명시되지 않음"이라고 하세요
+        10. 마크다운 형식을 사용하여 구조화된 답변을 제공하세요
+        
+        **참조 문서:**
+        {context}
+        
+        **사용자 질문:** {input}
+        
+        **답변:** 위 문서의 내용을 바탕으로 질문에 대한 구체적이고 실용적인 답변을 마크다운 형식으로 바로 제공해주세요. 반드시 한국어로 시작하고, 영어나 <think> 태그는 절대 포함하지 마세요.
+        """
             
             prompt = PromptTemplate(
                 template=prompt_template,
@@ -171,33 +183,133 @@ class LangChainRAGService:
     def generate_answer(self, question: str) -> Dict[str, Any]:
         """RAG를 통한 답변 생성"""
         try:
-            # 간단한 유사 문서 검색으로 시작
+            # RAG 체인을 사용하여 답변 생성
+            if self.qa_chain:
+                logger.info(f"🤖 LLM을 사용한 RAG 답변 생성 시작: {question}")
+                result = self.qa_chain.invoke({"input": question})
+                
+                # 참조 문서 정보 추출
+                references = []
+                source_documents = result.get("context", [])
+                
+                for doc in source_documents:
+                    if hasattr(doc, 'metadata') and doc.metadata:
+                        filename = doc.metadata.get('filename', 'Unknown')
+                        file_id = doc.metadata.get('file_id', 'unknown')
+                        chunk_index = doc.metadata.get('chunk_index', 0)
+                        page_number = chunk_index + 1
+                        references.append(f"{filename}::{file_id} [p{page_number}]")
+                
+                # <think> 태그 및 영어 사고 과정 제거 (강화된 버전)
+                answer = result.get("answer", "답변을 생성할 수 없습니다.")
+                import re
+                
+                # <think>부터 </think>까지의 모든 내용 제거 (대소문자 구분 없음)
+                answer = re.sub(r'<think>.*?</think>', '', answer, flags=re.DOTALL | re.IGNORECASE).strip()
+                # </think> 태그만 있는 경우도 제거
+                answer = re.sub(r'</think>', '', answer, flags=re.IGNORECASE).strip()
+                # <think> 태그만 있는 경우도 제거
+                answer = re.sub(r'<think>', '', answer, flags=re.IGNORECASE).strip()
+                
+                # 영어 사고 과정 완전 제거 (극강화 버전)
+                lines = answer.split('\n')
+                filtered_lines = []
+                korean_found = False
+                
+                for line in lines:
+                    line = line.strip()
+                    if not line:
+                        filtered_lines.append(line)
+                        continue
+                    
+                    # 한국어가 포함된 줄이 나오면 korean_found = True
+                    if re.search(r'[가-힣]', line):
+                        korean_found = True
+                    
+                    # 한국어가 발견되기 전까지는 모든 영어 줄 무조건 제거
+                    if not korean_found:
+                        if re.match(r'^[A-Za-z]', line):
+                            continue
+                    
+                    # 한국어가 발견된 후에도 영어 사고 과정 제거
+                    if re.match(r'^[A-Za-z]', line):
+                        # 모든 영어 패턴 제거 (더 많은 패턴 추가)
+                        if any(phrase in line.lower() for phrase in [
+                            'let me', 'i need to', 'i should', 'i will', 'i can',
+                            'the answer should', 'make sure', 'avoid any',
+                            'structure the answer', 'break down', 'organize',
+                            'tag or any thinking', 'so i need to focus',
+                            'focus on the main content', 'documents',
+                            'thinking process', 'internal thought',
+                            'i need to focus', 'main content', 'tag', 'thinking',
+                            'tag or any', 'so i need', 'focus on', 'main content of',
+                            'documents', 'thinking', 'process', 'internal'
+                        ]):
+                            continue
+                        # 영어 문장이지만 중요한 내용이 아닌 경우 제거
+                        if len(line) > 10 and any(word in line.lower() for word in [
+                            'thinking', 'process', 'structure', 'format', 'markdown',
+                            'tag', 'focus', 'content', 'documents', 'internal',
+                            'answer', 'should', 'make', 'sure', 'avoid'
+                        ]):
+                            continue
+                        # 짧은 영어 문장도 제거 (사고 과정일 가능성)
+                        if len(line) < 200 and not re.search(r'[가-힣]', line):
+                            continue
+                    
+                    filtered_lines.append(line)
+                
+                answer = '\n'.join(filtered_lines).strip()
+                
+                response = {
+                    "answer": answer,
+                    "references": references,
+                    "source_documents": source_documents
+                }
+                
+                logger.info(f"✅ LLM RAG 답변 생성 완료: {len(references)}개 참조")
+                return response
+            else:
+                # RAG 체인이 없는 경우 폴백
+                logger.warning("⚠️ RAG 체인이 초기화되지 않음. 폴백 모드로 전환")
+                return self._generate_fallback_answer(question)
+            
+        except Exception as e:
+            logger.error(f"❌ RAG 답변 생성 실패: {e}")
+            # 오류 시 폴백 답변 생성
+            return self._generate_fallback_answer(question)
+    
+    def _generate_fallback_answer(self, question: str) -> Dict[str, Any]:
+        """폴백 답변 생성 (LLM 없이)"""
+        try:
+            # 유사 문서 검색
             similar_docs = self.search_similar_documents(question, k=3)
             
             if not similar_docs:
                 return {
-                    "answer": "죄송합니다. 관련 문서를 찾을 수 없습니다.",
-                    "references": ["문서 없음"],
+                    "answer": "죄송합니다. 관련 문서를 찾을 수 없습니다. 다른 키워드로 검색해보시거나 문서를 업로드해주세요.",
+                    "references": [],
                     "source_documents": []
                 }
             
-            # 문서 내용을 기반으로 간단한 답변 생성
-            context_text = ""
+            # 문서 내용 요약
+            context_summary = ""
             references = []
             
             for i, doc in enumerate(similar_docs):
-                context_text += f"\n문서 {i+1}:\n{doc.page_content[:500]}...\n"
+                # 문서 내용의 핵심 부분 추출 (처음 300자)
+                content_preview = doc.page_content[:300].replace('\n', ' ').strip()
+                context_summary += f"\n• {content_preview}...\n"
                 
                 if hasattr(doc, 'metadata') and doc.metadata:
                     filename = doc.metadata.get('filename', 'Unknown')
                     file_id = doc.metadata.get('file_id', 'unknown')
                     chunk_index = doc.metadata.get('chunk_index', 0)
-                    # 페이지 번호는 청크 인덱스를 기반으로 추정 (실제로는 더 정확한 방법 필요)
                     page_number = chunk_index + 1
                     references.append(f"{filename}::{file_id} [p{page_number}]")
             
-            # 간단한 답변 생성 (LLM 없이)
-            answer = f"질문하신 '{question}'에 대한 관련 문서를 찾았습니다.\n\n참조 문서에서 관련 내용을 확인할 수 있습니다."
+            # 간단한 답변 생성
+            answer = f"질문하신 '{question}'에 대한 관련 문서를 찾았습니다.\n\n참조 문서에서 관련 내용을 확인할 수 있습니다:\n{context_summary}"
             
             response = {
                 "answer": answer,
@@ -205,15 +317,14 @@ class LangChainRAGService:
                 "source_documents": similar_docs
             }
             
-            logger.info(f"✅ RAG 답변 생성 완료: {len(references)}개 참조")
+            logger.info(f"✅ 폴백 답변 생성 완료: {len(references)}개 참조")
             return response
             
         except Exception as e:
-            logger.error(f"❌ RAG 답변 생성 실패: {e}")
-            # 오류 시 기본 응답 반환
+            logger.error(f"❌ 폴백 답변 생성 실패: {e}")
             return {
-                "answer": "죄송합니다. 현재 시스템 오류로 인해 답변을 생성할 수 없습니다.",
-                "references": ["시스템 오류"],
+                "answer": "죄송합니다. 현재 시스템 오류로 인해 답변을 생성할 수 없습니다. 잠시 후 다시 시도해주세요.",
+                "references": [],
                 "source_documents": []
             }
     
diff --git a/frontend/package.json b/frontend/package.json
index 395016d..3f069d7 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -3,20 +3,27 @@
   "version": "1.0.0",
   "private": true,
   "dependencies": {
-    "react": "^18.2.0",
-    "react-dom": "^18.2.0",
-    "react-scripts": "5.0.1",
-    "typescript": "^4.9.5",
+    "@types/node": "^20.0.0",
     "@types/react": "^18.2.0",
     "@types/react-dom": "^18.2.0",
-    "@types/node": "^20.0.0",
+    "autoprefixer": "^10.4.0",
     "framer-motion": "^10.16.0",
     "lucide-react": "^0.294.0",
-    "react-pdf": "^10.1.0",
     "pdfjs-dist": "^5.3.93",
+    "postcss": "^8.4.0",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "react-markdown": "^10.1.0",
+    "react-pdf": "^10.1.0",
+    "react-scripts": "5.0.1",
+    "rehype-highlight": "^7.0.2",
+    "rehype-katex": "^7.0.1",
+    "rehype-raw": "^7.0.0",
+    "remark-breaks": "^4.0.0",
+    "remark-gfm": "^4.0.1",
+    "remark-math": "^6.0.0",
     "tailwindcss": "^3.3.0",
-    "autoprefixer": "^10.4.0",
-    "postcss": "^8.4.0"
+    "typescript": "^4.9.5"
   },
   "scripts": {
     "start": "react-scripts start",
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 1fdb684..4539476 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -3,6 +3,7 @@ import { motion, AnimatePresence } from 'framer-motion';
 import ChatInterface from './components/ChatInterface';
 import LoginModal from './components/LoginModal';
 import FileUploadModal from './components/FileUploadModal';
+import PDFViewer from './components/PDFViewer';
 import { AuthProvider, useAuth } from './contexts/AuthContext';
 import { ChatProvider } from './contexts/ChatContext';
 import { FileProvider } from './contexts/FileContext';
@@ -12,6 +13,12 @@ function AppContent() {
   const { isAuthenticated } = useAuth();
   const [showLogin, setShowLogin] = useState(false);
   const [showFileUpload, setShowFileUpload] = useState(false);
+  const [showPDFViewer, setShowPDFViewer] = useState(false);
+  const [pdfViewerData, setPdfViewerData] = useState<{
+    fileId: string;
+    filename: string;
+    pageNumber: number;
+  } | null>(null);
 
 
   const handleFileUploadClick = () => {
@@ -25,6 +32,22 @@ function AppContent() {
     }
   };
 
+  const handlePDFView = (fileId: string, filename: string) => {
+    setPdfViewerData({
+      fileId,
+      filename,
+      pageNumber: 1
+    });
+    setShowPDFViewer(true);
+    setShowFileUpload(false); // 파일 업로드 모달 닫기
+  };
+
+  const handlePDFViewerClose = () => {
+    setShowPDFViewer(false);
+    setPdfViewerData(null);
+    setShowFileUpload(true); // 파일 업로드 모달 다시 열기
+  };
+
   return (
     <div className="min-h-screen bg-gradient-to-br from-blue-50 via-indigo-50 to-purple-50 flex flex-col">
       {/* 헤더 */}
@@ -77,6 +100,16 @@ function AppContent() {
         {showFileUpload && (
           <FileUploadModal
             onClose={() => setShowFileUpload(false)}
+            onPDFView={handlePDFView}
+          />
+        )}
+        
+        {showPDFViewer && pdfViewerData && (
+          <PDFViewer
+            fileId={pdfViewerData.fileId}
+            filename={pdfViewerData.filename}
+            pageNumber={pdfViewerData.pageNumber}
+            onClose={handlePDFViewerClose}
           />
         )}
       </AnimatePresence>
diff --git a/frontend/src/components/FileUploadModal.tsx b/frontend/src/components/FileUploadModal.tsx
index 1c92a37..d9dfeed 100644
--- a/frontend/src/components/FileUploadModal.tsx
+++ b/frontend/src/components/FileUploadModal.tsx
@@ -5,9 +5,10 @@ import { X, Upload, Trash2, Search } from 'lucide-react';
 
 interface FileUploadModalProps {
   onClose: () => void;
+  onPDFView: (fileId: string, filename: string) => void;
 }
 
-const FileUploadModal: React.FC<FileUploadModalProps> = ({ onClose }) => {
+const FileUploadModal: React.FC<FileUploadModalProps> = ({ onClose, onPDFView }) => {
   const { files, uploadFile, deleteFile, refreshFiles, searchFiles, isLoading } = useFiles();
   const [dragActive, setDragActive] = useState(false);
   const [searchTerm, setSearchTerm] = useState('');
@@ -252,6 +253,10 @@ const FileUploadModal: React.FC<FileUploadModalProps> = ({ onClose }) => {
     }
   };
 
+  const handleDocumentDoubleClick = (fileId: string, filename: string) => {
+    onPDFView(fileId, filename);
+  };
+
   const showTooltip = (content: string, e: React.MouseEvent) => {
     setTooltip({
       show: true,
@@ -483,10 +488,12 @@ const FileUploadModal: React.FC<FileUploadModalProps> = ({ onClose }) => {
                         {file.id}
                       </div>
                       <div 
-                        className="col-span-5 text-sm text-gray-800 truncate cursor-help"
+                        className="col-span-5 text-sm text-gray-800 truncate cursor-pointer hover:text-blue-600 hover:underline transition-colors"
                         onMouseEnter={(e) => showTooltip(file.filename, e)}
                         onMouseLeave={hideTooltip}
                         onMouseMove={(e) => showTooltip(file.filename, e)}
+                        onDoubleClick={() => handleDocumentDoubleClick(file.id, file.filename)}
+                        title="더블클릭하여 PDF 뷰어로 열기"
                       >
                         {file.filename}
                       </div>
diff --git a/frontend/src/components/MessageBubble.tsx b/frontend/src/components/MessageBubble.tsx
index e5bfda8..908e3ee 100644
--- a/frontend/src/components/MessageBubble.tsx
+++ b/frontend/src/components/MessageBubble.tsx
@@ -1,6 +1,9 @@
 import React, { useState } from 'react';
 import { motion } from 'framer-motion';
-import { User, Bot, FileText } from 'lucide-react';
+import { User, FileText } from 'lucide-react';
+import ReactMarkdown from 'react-markdown';
+import remarkGfm from 'remark-gfm';
+import remarkBreaks from 'remark-breaks';
 import { Message } from '../contexts/ChatContext';
 import PDFViewer from './PDFViewer';
 
@@ -88,28 +91,82 @@ const MessageBubble: React.FC<MessageBubbleProps> = ({ message }) => {
           <div className={`w-8 h-8 rounded-full flex items-center justify-center flex-shrink-0 ${
             isUser 
               ? 'bg-gradient-to-r from-blue-500 to-purple-500' 
-              : 'bg-gradient-to-r from-gray-500 to-gray-600'
+              : 'bg-transparent'
           }`}>
             {isUser ? (
               <User className="w-4 h-4 text-white" />
             ) : (
-              <Bot className="w-4 h-4 text-white" />
+              <img 
+                src="/images/woongtalk_bgremove.png" 
+                alt="연구QA 챗봇" 
+                className="w-8 h-8"
+              />
             )}
           </div>
 
           {/* 메시지 내용 */}
-          <div className={`rounded-2xl px-4 py-3 flex-1 ${
+          <div className={`rounded-2xl px-4 py-3 flex-1 border border-gray-200 ${
             isUser
               ? 'bg-gradient-to-r from-blue-500 to-purple-500 text-white'
               : 'bg-gray-100 text-gray-800'
           }`}>
-            <div className="whitespace-pre-wrap break-words">
-              {message.content}
-            </div>
+            {isUser ? (
+              <div className="whitespace-pre-wrap break-words">
+                {message.content}
+              </div>
+            ) : (
+              <div className="markdown-content">
+                <ReactMarkdown
+                  remarkPlugins={[remarkGfm, remarkBreaks]}
+                  components={{
+                    // pre 태그를 완전히 제거하고 일반 div로 대체
+                    pre: ({ children }) => <div>{children}</div>,
+                    // code 태그 처리
+                    code: ({ children, className }) => {
+                      const isInline = !className;
+                      return isInline ? (
+                        <code className="bg-gray-200 px-2 py-1 rounded text-sm font-mono text-gray-800">{children}</code>
+                      ) : (
+                        <div className="bg-gray-100 text-gray-800 p-4 rounded-lg overflow-x-auto mb-4 font-mono text-sm">{children}</div>
+                      );
+                    },
+                    // 모든 마크다운 요소에 대한 커스텀 스타일링
+                    h1: ({ children }) => <h1 className="text-2xl font-bold mb-4 text-gray-800 border-b border-gray-200 pb-2">{children}</h1>,
+                    h2: ({ children }) => <h2 className="text-xl font-bold mb-3 text-gray-800 mt-6">{children}</h2>,
+                    h3: ({ children }) => <h3 className="text-lg font-bold mb-2 text-gray-800 mt-4">{children}</h3>,
+                    h4: ({ children }) => <h4 className="text-base font-bold mb-2 text-gray-800 mt-3">{children}</h4>,
+                    p: ({ children }) => <p className="mb-3 text-gray-700 leading-relaxed">{children}</p>,
+                    ul: ({ children }) => <ul className="list-disc list-inside mb-4 text-gray-700 space-y-1 ml-4">{children}</ul>,
+                    ol: ({ children }) => <ol className="list-decimal list-inside mb-4 text-gray-700 space-y-1 ml-4">{children}</ol>,
+                    li: ({ children }) => <li className="mb-1">{children}</li>,
+                    strong: ({ children }) => <strong className="font-bold text-gray-800">{children}</strong>,
+                    em: ({ children }) => <em className="italic text-gray-700">{children}</em>,
+                    blockquote: ({ children }) => <blockquote className="border-l-4 border-blue-300 pl-4 italic text-gray-600 bg-blue-50 py-2 rounded-r mb-4">{children}</blockquote>,
+                    table: ({ children }) => <div className="overflow-x-auto mb-4"><table className="min-w-full border-collapse border border-gray-300">{children}</table></div>,
+                    thead: ({ children }) => <thead className="bg-gray-50">{children}</thead>,
+                    tbody: ({ children }) => <tbody>{children}</tbody>,
+                    tr: ({ children }) => <tr className="border-b border-gray-200 hover:bg-gray-50">{children}</tr>,
+                    th: ({ children }) => <th className="border border-gray-300 px-4 py-2 text-left font-semibold text-gray-800 bg-gray-100">{children}</th>,
+                    td: ({ children }) => <td className="border border-gray-300 px-4 py-2 text-gray-700">{children}</td>,
+                    hr: () => <hr className="my-6 border-gray-300" />,
+                  }}
+                >
+                  {message.content}
+                </ReactMarkdown>
+              </div>
+            )}
             
             {/* 소스 정보 */}
             {!isUser && message.sources && message.sources.length > 0 && (
-              <div className="mt-3 pt-3 border-t border-gray-300/30">
+              <div className="mt-3 pt-3" style={{ 
+                borderTop: 'none !important', 
+                border: 'none !important',
+                borderBottom: 'none !important',
+                borderLeft: 'none !important',
+                borderRight: 'none !important',
+                outline: 'none !important',
+                boxShadow: 'none !important'
+              }}>
                 <div className="flex items-center space-x-1 text-sm opacity-75">
                   <FileText className="w-4 h-4" />
                   <span>참조 문서:</span>
diff --git a/frontend/src/components/TypingIndicator.tsx b/frontend/src/components/TypingIndicator.tsx
index 99bd351..7482137 100644
--- a/frontend/src/components/TypingIndicator.tsx
+++ b/frontend/src/components/TypingIndicator.tsx
@@ -5,8 +5,12 @@ const TypingIndicator: React.FC = () => {
   return (
     <div className="flex justify-start">
       <div className="flex items-center space-x-3">
-        <div className="w-8 h-8 rounded-full bg-gradient-to-r from-gray-500 to-gray-600 flex items-center justify-center">
-          <div className="w-4 h-4 bg-white rounded-full"></div>
+        <div className="w-8 h-8 rounded-full flex items-center justify-center">
+          <img 
+            src="/images/woongtalk_bgremove.png" 
+            alt="연구QA 챗봇" 
+            className="w-8 h-8"
+          />
         </div>
         <div className="bg-gray-100 rounded-2xl px-4 py-3">
           <div className="flex space-x-1">
diff --git a/frontend/src/index.css b/frontend/src/index.css
index bea989d..3eb7cfc 100644
--- a/frontend/src/index.css
+++ b/frontend/src/index.css
@@ -164,3 +164,345 @@ code {
   transform: scale(1);
   transform-origin: 0% 0%;
 }
+
+/* 마크다운 콘텐츠 스타일 */
+.markdown-content {
+  max-width: 100%;
+  line-height: 1.6;
+  color: #374151;
+}
+
+.markdown-content h1,
+.markdown-content h2,
+.markdown-content h3,
+.markdown-content h4,
+.markdown-content h5,
+.markdown-content h6 {
+  font-weight: 600;
+  margin-top: 1.5rem;
+  margin-bottom: 0.5rem;
+  color: #1f2937;
+}
+
+.markdown-content h1 {
+  font-size: 1.5rem;
+  border-bottom: 1px solid #e5e7eb;
+  padding-bottom: 0.5rem;
+}
+
+.markdown-content h2 {
+  font-size: 1.25rem;
+}
+
+.markdown-content h3 {
+  font-size: 1.125rem;
+}
+
+.markdown-content h4 {
+  font-size: 1rem;
+}
+
+.markdown-content p {
+  margin-bottom: 1rem;
+  color: #374151;
+}
+
+.markdown-content ul,
+.markdown-content ol {
+  margin-bottom: 1rem;
+  padding-left: 1.5rem;
+}
+
+.markdown-content li {
+  margin-bottom: 0.25rem;
+  color: #374151;
+}
+
+.markdown-content strong {
+  font-weight: 600;
+  color: #1f2937;
+}
+
+.markdown-content em {
+  font-style: italic;
+  color: #4b5563;
+}
+
+.markdown-content code {
+  background-color: #f3f4f6;
+  padding: 0.125rem 0.25rem;
+  border-radius: 0.25rem;
+  font-size: 0.875rem;
+  font-family: 'Courier New', monospace;
+}
+
+.markdown-content pre {
+  background-color: #1f2937;
+  color: #f9fafb;
+  padding: 1rem;
+  border-radius: 0.5rem;
+  overflow-x: auto;
+  margin-bottom: 1rem;
+}
+
+.markdown-content pre code {
+  background-color: transparent;
+  padding: 0;
+  color: inherit;
+}
+
+.markdown-content blockquote {
+  border-left: 4px solid #3b82f6;
+  padding-left: 1rem;
+  margin: 1rem 0;
+  font-style: italic;
+  color: #4b5563;
+  background-color: #eff6ff;
+  padding: 0.5rem 1rem;
+  border-radius: 0 0.25rem 0.25rem 0;
+}
+
+.markdown-content table {
+  width: 100%;
+  border-collapse: collapse;
+  margin-bottom: 1rem;
+  border: 1px solid #d1d5db;
+}
+
+.markdown-content th,
+.markdown-content td {
+  border: 1px solid #d1d5db;
+  padding: 0.5rem;
+  text-align: left;
+}
+
+.markdown-content th {
+  background-color: #f9fafb;
+  font-weight: 600;
+  color: #1f2937;
+}
+
+.markdown-content tr:hover {
+  background-color: #f9fafb;
+}
+
+.markdown-content hr {
+  border: none !important;
+  border-top: none !important;
+  margin: 2rem 0;
+  display: none !important; /* hr 요소 완전 숨김 */
+  height: 0 !important;
+  visibility: hidden !important;
+}
+
+/* 모든 가능한 선 제거 */
+.markdown-content * {
+  border-top: none !important;
+}
+
+.markdown-content > *:first-child {
+  border-top: none !important;
+}
+
+/* 참조 문서 섹션의 모든 선 제거 */
+.mt-3.pt-3 {
+  border-top: none !important;
+  border: none !important;
+}
+
+/* 모든 div 요소의 상단 테두리 제거 */
+div {
+  border-top: none !important;
+}
+
+/* 특정 클래스의 테두리 제거 */
+.border-t {
+  border-top: none !important;
+}
+
+/* 모든 가능한 선과 배경 제거 */
+* {
+  border-top: none !important;
+}
+
+/* 메시지 버블의 모든 테두리 제거 */
+.rounded-2xl {
+  border: none !important;
+  border-top: none !important;
+  border-bottom: none !important;
+  border-left: none !important;
+  border-right: none !important;
+}
+
+/* 마크다운 콘텐츠 스타일 */
+.markdown-content {
+  border: none !important;
+  background: transparent !important;
+  color: #374151 !important;
+  font-family: inherit !important;
+  line-height: 1.6 !important;
+  white-space: pre-wrap !important;
+  word-wrap: break-word !important;
+}
+
+/* 마크다운 요소들 기본 스타일 */
+.markdown-content h1 {
+  font-size: 1.5rem !important;
+  font-weight: bold !important;
+  color: #374151 !important;
+  margin: 1rem 0 0.5rem 0 !important;
+  border-bottom: 2px solid #E5E7EB !important;
+  padding-bottom: 0.5rem !important;
+}
+
+.markdown-content h2 {
+  font-size: 1.25rem !important;
+  font-weight: bold !important;
+  color: #374151 !important;
+  margin: 1.5rem 0 0.5rem 0 !important;
+}
+
+.markdown-content h3 {
+  font-size: 1.125rem !important;
+  font-weight: bold !important;
+  color: #374151 !important;
+  margin: 1.25rem 0 0.5rem 0 !important;
+}
+
+.markdown-content h4 {
+  font-size: 1rem !important;
+  font-weight: bold !important;
+  color: #374151 !important;
+  margin: 1rem 0 0.5rem 0 !important;
+}
+
+.markdown-content p {
+  margin: 0.5rem 0 !important;
+  line-height: 1.6 !important;
+  color: #4B5563 !important;
+}
+
+.markdown-content ul {
+  margin: 0.5rem 0 !important;
+  padding-left: 1.5rem !important;
+  list-style-type: disc !important;
+}
+
+.markdown-content ol {
+  margin: 0.5rem 0 !important;
+  padding-left: 1.5rem !important;
+  list-style-type: decimal !important;
+}
+
+.markdown-content li {
+  margin: 0.25rem 0 !important;
+  color: #4B5563 !important;
+}
+
+.markdown-content strong {
+  font-weight: bold !important;
+  color: #374151 !important;
+}
+
+.markdown-content em {
+  font-style: italic !important;
+  color: #4B5563 !important;
+}
+
+.markdown-content code {
+  background-color: #F3F4F6 !important;
+  padding: 0.125rem 0.25rem !important;
+  border-radius: 0.25rem !important;
+  font-family: 'Courier New', monospace !important;
+  font-size: 0.875rem !important;
+  color: #374151 !important;
+}
+
+/* 마크다운 내용이 pre 태그로 감싸지지 않도록 설정 */
+.markdown-content {
+  white-space: normal !important;
+  word-wrap: break-word !important;
+}
+
+/* 전체 마크다운을 감싸는 pre 태그의 스타일을 일반 div처럼 변경 */
+.markdown-content > pre {
+  white-space: normal !important;
+  word-wrap: break-word !important;
+  background: transparent !important;
+  border: none !important;
+  padding: 0 !important;
+  margin: 0 !important;
+  font-family: inherit !important;
+  font-size: inherit !important;
+  line-height: inherit !important;
+}
+
+/* 실제 코드 블록에만 적용되는 pre 태그 스타일 */
+.markdown-content pre {
+  background-color: #F3F4F6 !important;
+  color: #374151 !important;
+  padding: 1rem !important;
+  border-radius: 0.5rem !important;
+  overflow-x: auto !important;
+  margin: 1rem 0 !important;
+  white-space: pre-wrap !important;
+  word-wrap: break-word !important;
+}
+
+/* pre 태그 내부의 코드 블록만 스타일 적용 */
+.markdown-content pre code {
+  background: transparent !important;
+  padding: 0 !important;
+  border-radius: 0 !important;
+  font-size: inherit !important;
+}
+
+.markdown-content blockquote {
+  border-left: 4px solid #3B82F6 !important;
+  padding-left: 1rem !important;
+  margin: 1rem 0 !important;
+  font-style: italic !important;
+  color: #6B7280 !important;
+  background-color: #EFF6FF !important;
+  padding: 0.5rem 1rem !important;
+  border-radius: 0 0.25rem 0.25rem 0 !important;
+}
+
+.markdown-content table {
+  width: 100% !important;
+  border-collapse: collapse !important;
+  margin: 1rem 0 !important;
+}
+
+.markdown-content th {
+  border: 1px solid #D1D5DB !important;
+  padding: 0.5rem !important;
+  text-align: left !important;
+  background-color: #F9FAFB !important;
+  font-weight: bold !important;
+  color: #374151 !important;
+}
+
+.markdown-content td {
+  border: 1px solid #D1D5DB !important;
+  padding: 0.5rem !important;
+  text-align: left !important;
+  color: #4B5563 !important;
+}
+
+.markdown-content hr {
+  border: none !important;
+  border-top: 1px solid #E5E7EB !important;
+  margin: 2rem 0 !important;
+}
+
+/* 참조 문서 섹션의 모든 선과 배경 제거 */
+.mt-3.pt-3 {
+  border: none !important;
+  border-top: none !important;
+  border-bottom: none !important;
+  border-left: none !important;
+  border-right: none !important;
+  background: transparent !important;
+  background-color: transparent !important;
+}