diff --git a/miniapp/pages/chat/chat.js b/miniapp/pages/chat/chat.js
index e19bb6b..59ce1ab 100644
--- a/miniapp/pages/chat/chat.js
+++ b/miniapp/pages/chat/chat.js
@@ -267,6 +267,20 @@ Page({
     }
   },
 
+  // 点击参考来源标题, 折叠/展开链接和摘要
+  toggleRef(e) {
+    const mkey = e.currentTarget.dataset.mkey
+    const idx = Number(e.currentTarget.dataset.idx)
+    const list = this.data.messages.slice()
+    const i = list.findIndex((m) => m.key === mkey)
+    if (i === -1) return
+    const refs = (list[i].references || []).slice()
+    if (!refs[idx]) return
+    refs[idx] = Object.assign({}, refs[idx], { expanded: !refs[idx].expanded })
+    list[i] = Object.assign({}, list[i], { references: refs })
+    this.setData({ messages: list })
+  },
+
   // 参考文档带 source_url 时(共享文档)点击复制链接到剪贴板。
   // 小程序无法直接打开任意外链, 复制后由用户粘贴到浏览器。
   onRefLinkTap(e) {
diff --git a/miniapp/pages/chat/chat.wxml b/miniapp/pages/chat/chat.wxml
index 8d44654..a6a7a98 100644
--- a/miniapp/pages/chat/chat.wxml
+++ b/miniapp/pages/chat/chat.wxml
@@ -72,18 +72,29 @@
               <view class="refs">
                 <view class="refs-title">参考来源</view>
                 <view class="ref-item" wx:for="{{item.references}}" wx:for-item="ref" wx:key="idx" wx:for-index="idx">
-                  <text class="ref-title" user-select="{{true}}">[{{idx + 1}}] {{ref.source_title}}</text>
                   <view
-                    wx:if="{{ref.source_url}}"
-                    class="ref-link"
-                    hover-class="ref-link-hover"
-                    bindtap="onRefLinkTap"
-                    data-url="{{ref.source_url}}"
+                    class="ref-head"
+                    hover-class="ref-head-hover"
+                    bindtap="toggleRef"
+                    data-mkey="{{item.key}}"
+                    data-idx="{{idx}}"
                   >
-                    <text class="ref-link-icon">🔗</text>
-                    <text class="ref-link-url" user-select="{{true}}">{{ref.source_url}}</text>
+                    <text class="ref-title">[{{idx + 1}}] {{ref.source_title}}</text>
+                    <text class="ref-arrow {{ref.expanded ? 'expanded' : ''}}">›</text>
                   </view>
-                  <text wx:if="{{ref.snippet}}" class="ref-snippet" user-select="{{true}}">{{ref.snippet}}</text>
+                  <block wx:if="{{ref.expanded}}">
+                    <view
+                      wx:if="{{ref.source_url}}"
+                      class="ref-link"
+                      hover-class="ref-link-hover"
+                      bindtap="onRefLinkTap"
+                      data-url="{{ref.source_url}}"
+                    >
+                      <text class="ref-link-icon">🔗</text>
+                      <text class="ref-link-url" user-select="{{true}}">{{ref.source_url}}</text>
+                    </view>
+                    <text wx:if="{{ref.snippet}}" class="ref-snippet" user-select="{{true}}">{{ref.snippet}}</text>
+                  </block>
                 </view>
               </view>
             </block>
diff --git a/miniapp/pages/chat/chat.wxss b/miniapp/pages/chat/chat.wxss
index bbc6dea..08e8eae 100644
--- a/miniapp/pages/chat/chat.wxss
+++ b/miniapp/pages/chat/chat.wxss
@@ -211,11 +211,33 @@
   flex-direction: column;
   padding: 10rpx 0;
 }
+.ref-head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12rpx;
+  padding: 4rpx 0;
+}
+.ref-head-hover {
+  opacity: 0.7;
+}
 .ref-title {
+  flex: 1;
   font-size: 24rpx;
   color: var(--brand);
   font-weight: 500;
 }
+.ref-arrow {
+  flex: 0 0 auto;
+  font-size: 28rpx;
+  line-height: 1;
+  color: var(--brand);
+  transform: rotate(90deg);
+  transition: transform 0.2s ease;
+}
+.ref-arrow.expanded {
+  transform: rotate(270deg);
+}
 .ref-link {
   display: flex;
   flex-direction: row;