bugfix：补全index

shudao-vue-frontend/src/components/MobilePdfViewer.vue

@@ -2,7 +2,7 @@
   <div class="mobile-pdf-viewer">
     <div v-if="loading" class="loading-container">
       <div class="loading-spinner"></div>
-      <div class="loading-text">正在加载文档 {{ Math.floor(progress * 100) }}%...</div>
+      <div class="loading-text">正在加载文档...</div>
     </div>
     
     <div v-if="error" class="error-container">
@@ -145,11 +145,13 @@ onUnmounted(() => {
 <style scoped>
 .mobile-pdf-viewer {
   width: 100%;
+  height: 100%;
   min-height: 300px;
   background-color: #f3f4f6;
   position: relative;
   overflow-y: auto;
   -webkit-overflow-scrolling: touch;
+  touch-action: pan-y;
 }
 
 .loading-container, .error-container {
@@ -159,6 +161,7 @@ onUnmounted(() => {
   justify-content: center;
   padding: 40px 20px;
   text-align: center;
+  height: 100%;
 }
 
 .loading-spinner {
@@ -208,6 +211,7 @@ onUnmounted(() => {
 
 .pdf-container {
   width: 100%;
+  min-height: 100%;
   padding: 10px;
   box-sizing: border-box;
 }