diff --git a/frontend/src/components/meeting/ChatPanel.vue b/frontend/src/components/meeting/ChatPanel.vue
index 9e838af..c2bb7ab 100644
--- a/frontend/src/components/meeting/ChatPanel.vue
+++ b/frontend/src/components/meeting/ChatPanel.vue
@@ -350,6 +350,8 @@ const close = () => emit('close')
 
 .input-area {
   display: flex;
+  flex-direction: row;
+  flex-wrap: nowrap;
   align-items: flex-end;
   gap: 12rpx;
   padding: 16rpx 24rpx calc(16rpx + env(safe-area-inset-bottom));
@@ -375,6 +377,7 @@ const close = () => emit('close')
 }
 
 .btn-send {
+  /* 覆盖 uni-app <uni-button> 默认 width:100% / border / margin */
   all: unset;
   cursor: pointer;
   display: inline-flex;
@@ -388,7 +391,16 @@ const close = () => emit('close')
   box-shadow: 0 4rpx 14rpx rgba(59, 130, 246, 0.35);
   transition: background-color 0.15s ease, transform 0.08s ease, box-shadow 0.15s ease;
   flex-shrink: 0;
+  width: auto;
   min-height: 64rpx;
+  line-height: 1;
+  box-sizing: border-box;
+}
+/* 防御 uni-app H5 <uni-button> 内部嵌套 <button> 的全宽/默认边框 */
+.btn-send::after { border: none !important; }
+.input-area ::v-deep(uni-button.btn-send) {
+  width: auto;
+  margin: 0;
 }
 .btn-send svg { display: block; }
 .btn-send .btn-send-label { font-size: 26rpx; font-weight: 600; }
diff --git a/frontend/src/store/meeting.js b/frontend/src/store/meeting.js
index b256b0a..9a13b21 100644
--- a/frontend/src/store/meeting.js
+++ b/frontend/src/store/meeting.js
@@ -528,7 +528,7 @@ export const useMeetingStore = defineStore('meeting', () => {
    * @param {Object} payload - { title, password?, max_members?, enter_muted?, allow_chat? }
    * @param {Object} [mediaPrefs] - 设备预览页的媒体偏好，入会成功后自动推流（可空）
    */
-  const createAndEnter = async (payload, mediaPrefs) => {
+  const createAndEnter = async (payload, mediaPrefs, _retried = false) => {
     if (isInMeeting.value) {
       throw new Error('你当前已在其他会议中')
     }
@@ -550,7 +550,14 @@ export const useMeetingStore = defineStore('meeting', () => {
     } catch (err) {
       _log('error', '[Meeting] 创建并入会失败', err)
       _reset()
-      throw _enrichStaleMeetingError(err)
+      const enriched = _enrichStaleMeetingError(err)
+      // 刷新/崩溃残留：后端仍标记当前用户为活跃成员 → 自动清理后重试一次
+      if (enriched?.staleMeetingHint && !_retried) {
+        _log('warn', '[Meeting] 检测到僵尸会议残留，自动清理并重试创建')
+        try { await cleanupStaleMeetings() } catch (e) { _log('warn', '[Meeting] 自动清理失败', e) }
+        return createAndEnter(payload, mediaPrefs, true)
+      }
+      throw enriched
     }
   }
 
@@ -560,7 +567,7 @@ export const useMeetingStore = defineStore('meeting', () => {
    * @param {string} [password]
    * @param {Object} [mediaPrefs] - 设备预览页的媒体偏好（可空）
    */
-  const joinAndEnter = async (roomCode, password = '', mediaPrefs) => {
+  const joinAndEnter = async (roomCode, password = '', mediaPrefs, _retried = false) => {
     if (isInMeeting.value) {
       throw new Error('你当前已在其他会议中')
     }
@@ -575,7 +582,14 @@ export const useMeetingStore = defineStore('meeting', () => {
     } catch (err) {
       _log('error', '[Meeting] 加入会议失败', err)
       _reset()
-      throw _enrichStaleMeetingError(err)
+      const enriched = _enrichStaleMeetingError(err)
+      // 刷新/崩溃残留：后端仍记该用户为活跃成员 → 自动清理后重试一次
+      if (enriched?.staleMeetingHint && !_retried) {
+        _log('warn', '[Meeting] 检测到僵尸会议残留，自动清理并重试加入')
+        try { await cleanupStaleMeetings() } catch (e) { _log('warn', '[Meeting] 自动清理失败', e) }
+        return joinAndEnter(roomCode, password, mediaPrefs, true)
+      }
+      throw enriched
     }
   }