按钮组件，链接显示修复

unpackage/dist/dev/app-plus/pages/Chat/Chat.css

@@ -1716,6 +1716,7 @@ to { opacity: 1; transform: translateY(0);
   /* 普通正文 */
   /* 粗体和斜体样式 */
   /* 气泡内的内联链接（替代 <a> 标签，点击由 JS 拦截处理） */
+  /* 可下载文件链接 → 按钮卡片样式 */
 }
 .chat-content h1 {
   font-size: 1.3125rem;
@@ -1761,6 +1762,38 @@ to { opacity: 1; transform: translateY(0);
   text-decoration: underline;
   word-break: break-all;
 }
+.chat-content .chat-download-btn {
+  display: inline-flex !important;
+  align-items: center;
+  gap: 0.25rem;
+  padding: 0.25rem 0.4375rem;
+  margin: 0.125rem 0;
+  background: #f5f7fb;
+  border: 0.0625rem solid #e4e8f0;
+  border-radius: 0.25rem;
+  text-decoration: none !important;
+  color: #333 !important;
+  word-break: break-all;
+  transition: all 0.15s ease;
+}
+.chat-content .chat-download-btn:active {
+  background: #eef1f7;
+  border-color: #c8cde0;
+  transform: scale(0.98);
+}
+.chat-content .chat-download-btn .chat-dl-icon {
+  font-size: 0.8125rem !important;
+  line-height: 1;
+  flex-shrink: 0;
+}
+.chat-content .chat-download-btn .chat-dl-name {
+  font-size: 16px !important;
+  font-weight: 500;
+  color: #333;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
 
 /* 流式气泡中的加载动画 */
 .bubble-loading-dots {