feat(首页): 替换功能卡片图标并优化样式

添加新的SVG图标资源并替换原有的Element UI图标
调整卡片样式包括间距、颜色和悬停效果

src/renderer/views/home/HomeView.vue

@@ -17,21 +17,21 @@
       <div class="card-section flex gap-8 items-center">
         <div class="feature-card">
           <div class="card-icon">
-            <el-icon :size="42"><Document /></el-icon>
+            <img src="@/assets/icons/document-organization.svg" width="42" height="42" />
           </div>
           <div class="card-title">智能文档处理</div>
           <div class="card-desc">支持多种格式文档的智能解析与处理</div>
         </div>
         <div class="feature-card">
           <div class="card-icon">
-            <el-icon :size="42"><Document /></el-icon>
+            <img src="@/assets/icons/official-document.svg" width="42" height="42" />
           </div>
           <div class="card-title">智能文档处理</div>
           <div class="card-desc">支持多种格式文档的智能解析与处理</div>
         </div>
         <div class="feature-card">
           <div class="card-icon">
-            <el-icon :size="42"><Document /></el-icon>
+            <img src="@/assets/icons/pdf.svg" width="42" height="42" />
           </div>
           <div class="card-title">智能文档处理</div>
           <div class="card-desc">支持多种格式文档的智能解析与处理</div>
@@ -194,7 +194,7 @@ function handleKeydown(e) {
   border-radius: 8px;
   display: flex;
   flex-direction: column;
-  padding: 25px 16px;
+  padding: 16px;
   gap: 8px;
   background: #ffffff;
   box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
@@ -203,26 +203,31 @@ function handleKeydown(e) {
 .card-icon {
   width: 42px;
   height: 42px;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  color: #409eff;
+  margin-top: 9px;
   margin-bottom: 4px;
 }
 
+.card-icon img {
+  transition: transform 0.3s ease;
+}
+
+.card-icon img:hover {
+  transform: rotate(-15deg);
+}
+
 .card-title {
   font-weight: 600;
   font-size: 14px;
   line-height: 20px;
   letter-spacing: 0.55px;
-  color: #303133;
+  color: #1a1a1a;
 }
 
 .card-desc {
   font-weight: 400;
   font-size: 12px;
   line-height: 16px;
-  color: #909399;
+  color: #8a9097;
 }
 
 /* 底部：输入框 */