diff --git a/index.php b/index.php
index ac1871f..51c068b 100644
--- a/index.php
+++ b/index.php
@@ -266,6 +266,23 @@
         <img id="fullscreen-img" src="" alt="Full size view" onclick="event.stopPropagation()">
     </div>
 
+    <!-- PDF Viewer Modal -->
+    <div id="pdf-modal-backdrop" class="fixed inset-0 bg-slate-900/50 backdrop-blur-sm z-[70] hidden transition-opacity opacity-0" onclick="closePdfViewer()"></div>
+    
+    <div id="pdf-modal-container" class="fixed inset-0 z-[70] flex items-center justify-center p-4 pointer-events-none hidden">
+        <div class="bg-white rounded-2xl shadow-2xl w-full max-w-[95vw] h-[95vh] flex flex-col pointer-events-auto scale-95 opacity-0 transition-all duration-300" id="pdf-modal-card">
+            <div class="sticky top-0 bg-white/90 backdrop-blur-sm p-4 border-b border-slate-100 flex justify-between items-center z-10">
+                <h3 class="text-lg font-bold text-slate-900" id="pdf-modal-title">상세자료</h3>
+                <button onclick="closePdfViewer()" class="w-8 h-8 rounded-full bg-slate-50 hover:bg-slate-100 flex items-center justify-center text-slate-500 transition-colors">
+                    <i data-lucide="x" class="w-5 h-5"></i>
+                </button>
+            </div>
+            <div class="flex-1 overflow-hidden">
+                <iframe id="pdf-viewer-iframe" src="" class="w-full h-full border-0" frameborder="0"></iframe>
+            </div>
+        </div>
+    </div>
+
     <script>
         // 통일된 영업 자료 데이터 구조
         // 모든 카드는 동일한 포맷: 이미지(4:3), 설명, 동영상, 오디오, 영업 스크립트
@@ -275,8 +292,9 @@
             title: '대표를 위한 무기',
             image: 'img/sales1.jpg',
             description: '기존 ERP는 직원의 관리 도구였지만, SAM은 대표님의 의사결정 무기입니다. 직원의 보고를 기다리지 마십시오.',
-            video: null,
-            audio: null,
+            video: '<div style="padding:56.25% 0 0 0;position:relative;"><iframe src="https://player.vimeo.com/video/1147875239?badge=0&amp;autopause=0&amp;player_id=0&amp;app_id=58479" frameborder="0" allow="autoplay; fullscreen; picture-in-picture; clipboard-write; encrypted-media; web-share" referrerpolicy="strict-origin-when-cross-origin" style="position:absolute;top:0;left:0;width:100%;height:100%;" title="SAM__CEO를_위한_무기"></iframe></div>',
+            audio: 'm4a/sales1.m4a',
+            pdf: 'pdf/sales1.pdf',
             script: "대표님, ERP나 MES 들어보셨죠? 보통 직원들이 입력하고 관리하는 도구입니다. 정작 대표님은 직원한테 보고를 받아야만 회사를 알 수 있죠. SAM은 반대입니다. 직원이 아니라 '대표님을 위한 무기'입니다. 외근 중이든 집이든, 대표님 폰에서 회사의 자금, 인력, 리스크가 한눈에 보입니다.",
             tags: ['Pitch', 'Opener'],
           },
@@ -580,6 +598,20 @@
                     </div>`;
             }
             
+            // 2. 설명 (이미지 밑에 표시)
+            if (asset.description) {
+                mediaHtml += `
+                    <div class="mb-6">
+                        <div class="flex items-center gap-2 mb-3">
+                            <div class="w-1 h-5 rounded-full bg-brand-500"></div>
+                            <h4 class="font-bold text-slate-900">설명</h4>
+                        </div>
+                        <div class="p-4 bg-slate-50 rounded-xl border border-slate-100 text-slate-700 leading-relaxed">
+                            ${asset.description}
+                        </div>
+                    </div>`;
+            }
+            
             // 2. 동영상
             if (asset.video) {
                 mediaHtml += `
@@ -631,19 +663,6 @@
                     <div class="p-6 sm:p-8">
                         ${mediaHtml}
                         
-                        <!-- 설명 -->
-                        ${asset.description ? `
-                        <div class="mb-8">
-                            <div class="flex items-center gap-2 mb-3">
-                                <div class="w-1 h-5 rounded-full bg-brand-500"></div>
-                                <h4 class="font-bold text-slate-900">설명</h4>
-                            </div>
-                            <div class="p-4 bg-slate-50 rounded-xl border border-slate-100 text-slate-700 leading-relaxed">
-                                ${asset.description}
-                            </div>
-                        </div>
-                        ` : ''}
-                        
                         <!-- 영업 스크립트 -->
                         ${asset.script ? `
                         <div class="mb-8">
@@ -665,10 +684,17 @@
                     
                     <div class="p-4 border-t border-slate-100 bg-slate-50 rounded-b-2xl flex justify-end gap-3">
                          <button onclick="closeModal()" class="px-4 py-2 rounded-lg bg-white border border-slate-200 text-slate-700 font-medium hover:bg-slate-50 transition-colors">닫기</button>
+                         ${asset.pdf ? `
+                         <button onclick="openPdfViewer('${asset.id}')" class="px-4 py-2 rounded-lg bg-brand-600 text-white font-medium hover:bg-brand-700 shadow-md transition-colors flex items-center gap-2">
+                            <i data-lucide="file-text" class="w-4 h-4"></i>
+                            상세자료 보기
+                         </button>
+                         ` : `
                          <button onclick="showDownloadToast(); closeModal()" class="px-4 py-2 rounded-lg bg-brand-600 text-white font-medium hover:bg-brand-700 shadow-md transition-colors flex items-center gap-2">
                             <i data-lucide="download" class="w-4 h-4"></i>
                             자료 사용하기
                          </button>
+                         `}
                     </div>
                 </div>
             `;
@@ -739,6 +765,60 @@
             }
         };
 
+        // PDF Viewer Functions
+        window.openPdfViewer = (id) => {
+            const asset = ASSETS.find(a => a.id === id);
+            if (!asset || !asset.pdf) return;
+
+            const pdfBackdrop = document.getElementById('pdf-modal-backdrop');
+            const pdfContainer = document.getElementById('pdf-modal-container');
+            const pdfCard = document.getElementById('pdf-modal-card');
+            const pdfIframe = document.getElementById('pdf-viewer-iframe');
+            const pdfTitle = document.getElementById('pdf-modal-title');
+
+            pdfTitle.textContent = asset.title;
+            
+            // PDF를 Google Drive Viewer로 표시 (로컬 파일도 가능)
+            // 또는 직접 PDF 파일 경로 사용 (브라우저 지원 시)
+            const pdfUrl = asset.pdf;
+            pdfIframe.src = pdfUrl;
+
+            // Animation In
+            pdfBackdrop.classList.remove('hidden');
+            pdfContainer.classList.remove('hidden');
+            document.body.classList.add('no-scroll');
+            
+            // Trigger reflow
+            void pdfBackdrop.offsetWidth;
+            
+            pdfBackdrop.classList.remove('opacity-0');
+            pdfCard.classList.remove('scale-95', 'opacity-0');
+            
+            lucide.createIcons();
+        };
+
+        window.closePdfViewer = () => {
+            const pdfBackdrop = document.getElementById('pdf-modal-backdrop');
+            const pdfContainer = document.getElementById('pdf-modal-container');
+            const pdfCard = document.getElementById('pdf-modal-card');
+            const pdfIframe = document.getElementById('pdf-viewer-iframe');
+
+            if (pdfCard) {
+                pdfCard.classList.add('scale-95', 'opacity-0');
+            }
+            pdfBackdrop.classList.add('opacity-0');
+            
+            setTimeout(() => {
+                pdfBackdrop.classList.add('hidden');
+                pdfContainer.classList.add('hidden');
+                pdfIframe.src = '';
+                // 모달이 열려있는 상태면 스크롤 제한 유지, 아니면 해제
+                if (document.getElementById('modal-backdrop').classList.contains('hidden')) {
+                    document.body.classList.remove('no-scroll');
+                }
+            }, 300);
+        };
+
         // 카드 이미지 비율 계산 함수
         window.setImageAspectRatio = (img) => {
             if (img.naturalWidth && img.naturalHeight) {
diff --git a/m4a/sales1.m4a b/m4a/sales1.m4a
new file mode 100644
index 0000000..57b1608
Binary files /dev/null and b/m4a/sales1.m4a differ
diff --git a/pdf/sales1.pdf b/pdf/sales1.pdf
new file mode 100644
index 0000000..5a7b5fe
Binary files /dev/null and b/pdf/sales1.pdf differ