diff --git a/src/components/BilingualMarkdownRenderer.tsx b/src/components/BilingualMarkdownRenderer.tsx
index e66caff2..80bdc2b3 100644
--- a/src/components/BilingualMarkdownRenderer.tsx
+++ b/src/components/BilingualMarkdownRenderer.tsx
@@ -234,7 +234,8 @@ const BilingualMarkdownRenderer = forwardRef<BilingualMarkdownRendererHandle, Bi
           'mt-1 pl-3 border-l-2 border-blue-400 dark:border-blue-500 text-gray-600 dark:text-text-tertiary text-sm leading-relaxed';
 
         if (segments[i].hasInlineCode) {
-          const codeRegex = /<code>([\s\S]*?)<\/code>/g;
+          // 修改正则以支持带属性的 code 标签（如 <code class="...">）
+          const codeRegex = /<code(?:\s+[^>]*)?>([\s\S]*?)<\/code>/g;
           let lastIndex = 0;
           let match: RegExpExecArray | null;
           while ((match = codeRegex.exec(translatedTexts[i])) !== null) {
diff --git a/src/components/MarkdownRenderer.tsx b/src/components/MarkdownRenderer.tsx
index 5ec1e271..0e1f61f4 100644
--- a/src/components/MarkdownRenderer.tsx
+++ b/src/components/MarkdownRenderer.tsx
@@ -860,7 +860,9 @@ const MarkdownRenderer: React.FC<MarkdownRendererProps> = memo(({
       <del className="line-through text-gray-500 dark:text-text-tertiary">{children}</del>
     ),
     code: ({ className, children, ...props }) => {
-      const isInline = !className;
+      // 检查 props 中是否有 'data-code-block' 标记（由 pre 组件添加）
+      const isCodeBlock = 'data-code-block' in props || !!className;
+      const isInline = !isCodeBlock;
       const match = /language-(\w+)/.exec(className || '');
       const language = match ? match[1] : '';
 
@@ -874,7 +876,14 @@ const MarkdownRenderer: React.FC<MarkdownRendererProps> = memo(({
         </CodeBlock>
       );
     },
-    pre: ({ children }) => <>{children}</>,
+    pre: ({ children }) => {
+      // 给 code 子元素添加标记，表明它是代码块而不是行内代码
+      if (React.isValidElement(children) && children.type === 'code') {
+        return <>{React.cloneElement(children as React.ReactElement<React.ComponentPropsWithoutRef<'code'>>, { 'data-code-block': true })}</>;
+      }
+      // 对于非 code 子元素（如 ASCII 字符画），保留 pre 标签
+      return <pre>{children}</pre>;
+    },
     blockquote: ({ children }) => (
       <blockquote className="border-l-4 border-black/[0.06] dark:border-white/[0.04] pl-4 py-1 my-2 text-gray-700 dark:text-text-tertiary italic bg-light-bg dark:bg-panel-dark/50 rounded-r">
         {children}
diff --git a/src/index.css b/src/index.css
index 72f785bf..1697c92e 100644
--- a/src/index.css
+++ b/src/index.css
@@ -191,6 +191,13 @@
 
 /* ========== Markdown Prose Component Styles ========== */
 @layer components {
+  .prose pre {
+    overflow-x: auto;
+    white-space: pre;
+    overflow-wrap: normal;
+    word-break: normal;
+  }
+
   .prose pre code {
     display: block;
     padding: 1rem;
@@ -199,6 +206,27 @@
     line-height: 1.5rem;
     tab-size: 2;
     -moz-tab-size: 2;
+    white-space: pre;
+    overflow-wrap: normal;
+    word-break: normal;
+    overflow-x: auto;
+  }
+
+  /* 纯 pre 标签样式（如字符画、ASCII art），不包含 code 子元素 */
+  .prose pre:not(:has(code)) {
+    padding: 1rem;
+    background-color: #f8fafc;
+    border-radius: 0.5rem;
+    font-size: 0.875rem;
+    line-height: 1.5rem;
+    font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;
+    border: 1px solid rgba(0, 0, 0, 0.06);
+  }
+
+  .dark .prose pre:not(:has(code)) {
+    background-color: #1e293b;
+    border-color: rgba(255, 255, 255, 0.04);
+    color: #e6edf3;
   }
 
   .prose :not(pre) > code {