优化按钮组件，统一使用button标签，调整样式以提升用户体验。

app/routes/rules-files.tsx

@@ -655,20 +655,19 @@ export default function RulesFiles() {
       width: "20%",
       render: (_: unknown, file: ReviewFileUI) => (
         <div className="flex flex-wrap gap-1">
-          <Button 
+          <button
-            type="default" 
+            type="button"
-            size="small" 
-            icon="ri-eye-line" 
             onClick={() => handleReviewFileClick(file.id, file.auditStatus)}
             disabled={file.status !== 'Processed'}
-            className="mr-1"
+            className={`text-xs px-2 py-1 h-7 mr-1 ${file.status === 'Processed' ? 'hover:underline hover:text-primary' : 'opacity-60 cursor-not-allowed pointer-events-none'}`}
           >
+            <i className="ri-eye-line"></i>
             查看
-          </Button>
+          </button>
           {file.fileTypeId === 1 && file.status === 'Processed' && (
             <button
               type="button"
-              className="text-xs px-2 py-1 h-7 mr-1 bg-primary text-white hover:bg-primary-dark rounded"
+              className="text-xs px-2 py-1 h-7 mr-1 hover:underline hover:text-primary"
               onClick={() => {
                 setSelectedDocumentId(file.id);
                 setShowAttachmentUpload(true);
@@ -678,15 +677,14 @@ export default function RulesFiles() {
               追加附件
             </button>
           )}
-          <Button 
+          <button
-            type="default" 
+            type="button"
-            size="small" 
+            className="text-xs px-2 py-1 h-7 mr-1 text-gray-500 hover:underline hover:text-gray-700"
-            icon="ri-download-2-line" 
-            className="mt-1"
             onClick={() => handleDownload(file.path)}
           >
+            <i className="ri-download-2-line"></i>
             下载
-          </Button>
+          </button>
         </div>
       )
     }