diff --git a/admin/src/views/SeriesManage.vue b/admin/src/views/SeriesManage.vue
index b53dade..ba9b45e 100644
--- a/admin/src/views/SeriesManage.vue
+++ b/admin/src/views/SeriesManage.vue
@@ -4,16 +4,39 @@
       <template #header>
         <div class="header">
           <span>系列管理</span>
-          <div>
+          <div class="header-right">
             <el-input v-model="keyword" placeholder="搜索系列标题" clearable
                       style="width: 200px; margin-right: 8px" @keyup.enter="load" />
-            <el-button :loading="syncAllLoading" @click="syncAll">同步新剧</el-button>
-            <el-button type="primary" @click="showCreate">+ 新建系列</el-button>
+
+            <el-dropdown trigger="click" @command="handleBatchCmd">
+              <el-button :loading="batchLoading">批量更新 <el-icon class="el-icon--right"><arrow-down /></el-icon></el-button>
+              <template #dropdown>
+                <el-dropdown-menu>
+                  <el-dropdown-item command="rebuild" :disabled="batchLoading">
+                    <el-icon><refresh-left /></el-icon> 重算集数（total_episodes）
+                  </el-dropdown-item>
+                  <el-dropdown-item command="syncDrama" :disabled="batchLoading">
+                    <el-icon><download /></el-icon> 同步短剧采集（新集数）
+                  </el-dropdown-item>
+                  <el-dropdown-item command="syncSources" :disabled="batchLoading">
+                    <el-icon><collection-tag /></el-icon> 同步视频采集源
+                  </el-dropdown-item>
+                </el-dropdown-menu>
+              </template>
+            </el-dropdown>
+
+            <el-button v-if="selectedIds.length" type="warning" plain
+                       style="margin-left: 8px"
+                       @click="showBatchEdit">批量编辑（已选 {{ selectedIds.length }}）</el-button>
+
+            <el-button type="primary" style="margin-left: 8px" @click="showCreate">+ 新建系列</el-button>
           </div>
         </div>
       </template>
 
-      <el-table :data="list" v-loading="loading" stripe>
+      <el-table :data="list" v-loading="loading" stripe
+                @selection-change="onSelectionChange">
+        <el-table-column type="selection" width="42" />
         <el-table-column prop="id" label="ID" width="70" />
         <el-table-column prop="title" label="系列标题" min-width="160">
           <template #default="{ row }">
@@ -106,12 +129,41 @@
         <el-button type="primary" :loading="submitting" @click="save">保存</el-button>
       </template>
     </el-dialog>
+
+    <!-- 批量编辑弹窗 -->
+    <el-dialog v-model="batchDialogVisible" title="批量编辑系列" width="400px">
+      <div style="margin-bottom: 12px; color: #606266; font-size: 13px">
+        共选中 <b>{{ selectedIds.length }}</b> 个系列，只修改下面勾选的字段：
+      </div>
+      <el-form :model="batchForm" label-width="80px">
+        <el-form-item label="状态">
+          <el-switch v-model="batchForm.touchStatus" active-text="修改" inactive-text="不改" />
+          <el-select v-if="batchForm.touchStatus" v-model="batchForm.status"
+                     style="width: 120px; margin-left: 12px">
+            <el-option label="正常" :value="1" />
+            <el-option label="隐藏" :value="0" />
+          </el-select>
+        </el-form-item>
+        <el-form-item label="分类">
+          <el-switch v-model="batchForm.touchCategory" active-text="修改" inactive-text="不改" />
+          <el-select v-if="batchForm.touchCategory" v-model="batchForm.category_id"
+                     placeholder="请选择" style="width: 180px; margin-left: 12px">
+            <el-option v-for="c in categories" :key="c.id" :label="c.name" :value="c.id" />
+          </el-select>
+        </el-form-item>
+      </el-form>
+      <template #footer>
+        <el-button @click="batchDialogVisible = false">取消</el-button>
+        <el-button type="primary" :loading="batchSubmitting" @click="batchSave">保存</el-button>
+      </template>
+    </el-dialog>
   </div>
 </template>
 
 <script setup>
 import { reactive, ref, onMounted } from 'vue'
 import { ElMessage, ElMessageBox } from 'element-plus'
+import { ArrowDown, RefreshLeft, Download, CollectionTag } from '@element-plus/icons-vue'
 import request from '@/api/request'
 
 const list = ref([])
@@ -125,13 +177,25 @@ const dialogVisible = ref(false)
 const editing = ref(null)
 const submitting = ref(false)
 const coverUploading = ref(false)
-const syncAllLoading = ref(false)
 const syncingId = ref(0)
+const selectedIds = ref([])
+const batchLoading = ref(false)
+const batchDialogVisible = ref(false)
+const batchSubmitting = ref(false)
 
 const form = reactive({
   title: '', cover_url: '', description: '', category_id: 0,
 })
 
+const batchForm = reactive({
+  touchStatus: false, status: 1,
+  touchCategory: false, category_id: 0,
+})
+
+function onSelectionChange(rows) {
+  selectedIds.value = rows.map(r => r.id)
+}
+
 async function uploadCover(file) {
   if (!file || !file.raw) return
   const allowed = ['image/jpeg', 'image/png', 'image/webp', 'image/gif']
@@ -247,20 +311,66 @@ async function syncOne(row) {
   }
 }
 
-async function syncAll() {
-  syncAllLoading.value = true
+// ---------- 批量操作 ----------
+
+async function handleBatchCmd(cmd) {
+  batchLoading.value = true
   try {
-    await request({ url: '/admin/collection/sync-all', method: 'post', data: { pages: 2 } })
-    ElMessage.success('已触发后台同步，稍后刷新查看')
-    setTimeout(load, 15000)
+    if (cmd === 'rebuild') {
+      await ElMessageBox.confirm(
+        '将遍历全部系列，按已发布视频真实数量重算 total_episodes。确定执行？',
+        '确认', { type: 'warning' }
+      )
+      const r = await request({ url: '/admin/series/rebuild-counts', method: 'post' })
+      ElMessage.success(`共 ${r.total} 个系列，修复了 ${r.fixed} 个`)
+      load()
+    } else if (cmd === 'syncDrama') {
+      const r = await request({
+        url: '/admin/collection/sync-all', method: 'post', data: { pages: 2 },
+      })
+      ElMessage.success(`已触发后台增量同步（pages=2），稍后刷新查看`)
+      setTimeout(load, 15000)
+    } else if (cmd === 'syncSources') {
+      await ElMessageBox.confirm(
+        '将同时触发所有 23 个视频采集源的全量同步（异步后台执行）。确定？',
+        '确认', { type: 'warning' }
+      )
+      const r = await request({ url: '/admin/collection/sources/sync-all', method: 'post' })
+      ElMessage.success(`已触发 ${r.started?.length || 0} 个采集源同步`)
+    }
   } catch (e) {} finally {
-    syncAllLoading.value = false
+    batchLoading.value = false
+  }
+}
+
+function showBatchEdit() {
+  Object.assign(batchForm, { touchStatus: false, status: 1, touchCategory: false, category_id: 0 })
+  batchDialogVisible.value = true
+}
+
+async function batchSave() {
+  if (!batchForm.touchStatus && !batchForm.touchCategory) {
+    ElMessage.warning('至少勾选一个要修改的字段')
+    return
+  }
+  batchSubmitting.value = true
+  try {
+    const data = { series_ids: selectedIds.value }
+    if (batchForm.touchStatus) data.status = batchForm.status
+    if (batchForm.touchCategory) data.category_id = batchForm.category_id
+    const r = await request({ url: '/admin/series/batch', method: 'put', data })
+    ElMessage.success(`已更新 ${r.affected} 个系列`)
+    batchDialogVisible.value = false
+    load()
+  } catch (e) {} finally {
+    batchSubmitting.value = false
   }
 }
 </script>
 
 <style scoped>
 .header { display: flex; justify-content: space-between; align-items: center; }
+.header-right { display: flex; align-items: center; }
 .title-col { display: flex; align-items: center; gap: 8px; }
 .cover { width: 40px; height: 40px; border-radius: 4px; object-fit: cover; }
 .cover-upload { display: flex; align-items: center; }
diff --git a/app/lib/core/player/feed_player_pool.dart b/app/lib/core/player/feed_player_pool.dart
index 3ff41b2..f1a6ddb 100644
--- a/app/lib/core/player/feed_player_pool.dart
+++ b/app/lib/core/player/feed_player_pool.dart
@@ -56,6 +56,11 @@ class FeedPlayerPool {
   /// 会让视频在后台继续出声（切到"我的"听到同一视频声音的根因）
   bool _suspended = false;
 
+  /// 断点续播记录：suspend 时保存当前槽位置（stop 断下载但位置不丢），
+  /// rebind 重新 open 后 seek 回断点再播；用后即清
+  int _resumeVideoId = -1;
+  Duration _resumePosition = Duration.zero;
+
   /// 最近一次 bindWindow（resume 时需等在途 open 完成再 play，避免 play 被
   /// open(play:false) 内部的 pause 覆盖导致恢复后不播）
   Future<void>? _pendingBind;
@@ -63,7 +68,16 @@ class FeedPlayerPool {
   /// 初始化（创建 3 槽位并订阅各自进度流）
   void init() {
     for (var i = 0; i < slotCount; i++) {
-      final player = _playerFactory?.call() ?? Player();
+      // bufferSize 映射 mpv demuxer-max-bytes（前向缓存，默认 32MB）。
+      // 压到 6MB：pause 时最多再缓冲 ~6MB（当前 HLS 片段下完即停），
+      // 不会像默认配置那样暂停后还预读后续多个分片偷跑流量；
+      // 恢复播放时 demuxer 缓存仍在，从暂停位置无缝继续（抖音行为）。
+      final player = _playerFactory?.call() ??
+          Player(
+            configuration: PlayerConfiguration(
+              bufferSize: 6 * 1024 * 1024,
+            ),
+          );
       final slot = PlayerSlot(player);
       _slots.add(slot);
       _hookSlot(slot);
@@ -132,6 +146,15 @@ class FeedPlayerPool {
       slot.videoId = item.videoId;
       slot.completeNotified = false;
       if (item.url.isNotEmpty) {
+        // 断点续播：open 前设置 mpv start 属性，mpv 在文件加载完成后自动
+        // 定位到断点。注意不能 open 后再复位 start——open() 发出 loadfile
+        // 即返回、文件异步加载，过早复位会让 mpv 加载时读到 none 从头播。
+        // 所以每次 open 前都显式设置（断点秒数或 none），无残留污染
+        final resumePos =
+            (i == index && item.videoId == _resumeVideoId && _resumeVideoId >= 0)
+                ? _resumePosition
+                : Duration.zero;
+        await _setMpvStart(slot.player, resumePos);
         // 经本地代理：HLS 分片 1G LRU 缓存，回看命中缓存不再下载
         await slot.player.open(Media(LocalMediaServer.I.wrap(item.url)), play: false);
         // await 期间用户可能又翻页：本次绑定已过期，退出（最新绑定会接管）
@@ -141,33 +164,65 @@ class FeedPlayerPool {
 
     // 4. 当前槽：播放（播前再校验代际与挂起态，防过期调用/后台挂起时唤醒媒体）
     if (gen != _generation || _suspended) return;
+    // 断点已在 step 3 经 mpv start 属性应用，此处消费掉记录
+    _resumeVideoId = -1;
+    _resumePosition = Duration.zero;
     currentSlot.player.play();
   }
 
-  /// 挂起（切出首页底部 Tab / App 退后台 / 切走当前策略）：
-  /// 立即暂停当前槽，并阻止在途 bindWindow 的 open 完成后自动播放
-  void suspend() {
-    _suspended = true;
+  /// 设置 mpv start 属性（zero 表示复位为 none）。仅 Native 平台有效，
+  /// 测试注入的 fake player 无 platform，静默忽略
+  Future<void> _setMpvStart(Player player, Duration pos) async {
     try {
-      currentSlot.player.pause();
+      final platform = player.platform;
+      if (platform is NativePlayer) {
+        await platform.setProperty(
+          'start',
+          pos > Duration.zero
+              ? (pos.inMilliseconds / 1000).toStringAsFixed(3)
+              : 'none',
+        );
+      }
     } catch (_) {}
   }
 
-  /// 恢复（切回首页 / App 回前台 / 策略切回）：解除挂起；若 bind 仍在 open，
-  /// 等其完成后再 play，避免 play 被 open(play:false) 的内部 pause 覆盖
+  /// 挂起（切出首页底部 Tab / App 退后台 / 切走当前策略）：
+  /// 记录当前槽播放位置后 stop 全部槽位。mpv 的 pause 只停播放线程，
+  /// demuxer 对 HLS 流仍持续预读分片（实测 demuxer-max-bytes 限不住），
+  /// 只有 stop 能可靠断开下载；位置存到 _resumePosition，恢复时 rebind
+  /// 重新 open + seek 续播（分片走本地代理磁盘缓存，零流量）
+  void suspend() {
+    _suspended = true;
+    // 使在途 bindWindow 过期：其 open 完成后不得再 play
+    _generation++;
+    for (var s = 0; s < slotCount; s++) {
+      final slot = _slots[s];
+      if (slot.videoId < 0) continue;
+      if (s == slotOf(_currentIndex)) {
+        _resumeVideoId = slot.videoId;
+        _resumePosition = slot.player.state.position;
+      }
+      unawaited(slot.player.stop());
+      slot.videoId = -1;
+      slot.completeNotified = false;
+    }
+  }
+
+  /// 恢复（切回首页 / App 回前台 / 策略切回）：先等待在途 bindWindow 的 open 完成
+  /// （否则 play 会被 open(play:false) 的内部 pause 覆盖导致恢复后不播），然后解除
+  /// 挂起并 play。_suspended 必须在 await 之后才解除——否则等待期间 completed
+  /// listener 的 auto-loop 会因为看到 _suspended=false 而提前 play
   Future<void> resume() async {
-    _suspended = false;
     final pending = _pendingBind;
     if (pending != null) {
       try {
         await pending;
       } catch (_) {}
     }
-    if (!_suspended) {
-      try {
-        currentSlot.player.play();
-      } catch (_) {}
-    }
+    _suspended = false;
+    try {
+      currentSlot.player.play();
+    } catch (_) {}
   }
 
   /// 每槽位独立订阅：≥95% 或播完触发一次 complete 回调
@@ -223,6 +278,9 @@ class FeedPlayerPool {
     _generation++;
     // stopAll 后通常跟着 rebind 重新播放（如从登录页返回），解除挂起态
     _suspended = false;
+    // 彻底重置语义：清掉 suspend 保存的断点，rebind 从头播
+    _resumeVideoId = -1;
+    _resumePosition = Duration.zero;
     for (final slot in _slots) {
       if (slot.videoId < 0) continue;
       unawaited(slot.player.stop());
diff --git a/app/lib/screens/feed/feed_screen.dart b/app/lib/screens/feed/feed_screen.dart
index b3a2ba4..e126b28 100644
--- a/app/lib/screens/feed/feed_screen.dart
+++ b/app/lib/screens/feed/feed_screen.dart
@@ -57,13 +57,16 @@ class _FeedScreenState extends ConsumerState<FeedScreen>
     super.dispose();
   }
 
-  /// App 退后台挂起、回前台恢复播放（suspend/resume 防在途 open 竞态）
+  /// App 退后台挂起、回前台从断点续播。inactive（下拉通知栏等瞬时态）
+  /// 只轻量 pause 当前槽防出声；paused（真退后台）才走 suspend(stop)
+  /// 彻底断下载——避免瞬时 inactive 触发 stop+重载的画面闪烁
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
     final notifier = ref.read(feedProvider(_strategy).notifier);
-    if (state == AppLifecycleState.paused ||
-        state == AppLifecycleState.inactive) {
+    if (state == AppLifecycleState.paused) {
       notifier.pool.suspend();
+    } else if (state == AppLifecycleState.inactive) {
+      notifier.pool.pauseCurrent();
     } else if (state == AppLifecycleState.resumed) {
       // 仅在首页 Tab 可见时恢复（在"我的"等页面回前台不播）
       if (ref.read(feedTabVisibleProvider)) {
@@ -99,11 +102,15 @@ class _FeedScreenState extends ConsumerState<FeedScreen>
         .events
         .listen(_handleEvent);
     _pageController.jumpToPage(0);
-    // jumpToPage 触发新策略 bindWindow 后再 resume：等其在途 open 完成再播放，
-    // 同时解除新策略池可能残留的挂起态
+    // jumpToPage 后 resume + rebindCurrent：suspend 已 stop 槽位，仅 play
+    // 播不起来，必须 rebind 重新 open（有断点记录则 seek 续播）
     WidgetsBinding.instance.addPostFrameCallback((_) {
       if (mounted) {
-        unawaited(ref.read(feedProvider(_strategy).notifier).pool.resume());
+        unawaited(() async {
+          final n = ref.read(feedProvider(_strategy).notifier);
+          await n.pool.resume();
+          await n.rebindCurrent();
+        }());
       }
     });
   }
diff --git a/app/lib/screens/feed/widgets/feed_video_page.dart b/app/lib/screens/feed/widgets/feed_video_page.dart
index db2a3e4..ef15e88 100644
--- a/app/lib/screens/feed/widgets/feed_video_page.dart
+++ b/app/lib/screens/feed/widgets/feed_video_page.dart
@@ -48,6 +48,10 @@ class _FeedVideoPageState extends ConsumerState<FeedVideoPage> {
   int _likeBurstTrigger = 0;
   Map<String, dynamic>? _seriesData;
 
+  /// 清屏模式：隐藏右侧互动栏与底部信息区，只留画面和进度条。
+  /// 单击屏幕仍是暂停/继续；恢复显示只能通过长按菜单的「恢复清屏」
+  bool _cleanMode = false;
+
   static const _rates = [1.0, 1.5, 2.0, 3.0];
 
   @override
@@ -174,6 +178,25 @@ class _FeedVideoPageState extends ConsumerState<FeedVideoPage> {
               },
             ),
 
+            // 清屏 / 恢复清屏：隐藏右侧互动栏与底部信息，只留进度条。
+            // 恢复只能从长按菜单进入，避免单击误触把界面弹回来
+            ListTile(
+              contentPadding: EdgeInsets.zero,
+              leading: Icon(_cleanMode
+                  ? Icons.fullscreen
+                  : Icons.fullscreen_exit),
+              title: Text(_cleanMode ? '恢复清屏' : '清屏'),
+              subtitle: Text(_cleanMode
+                  ? '重新显示点赞、评论、收藏、作者与标题'
+                  : '隐藏点赞、评论、收藏、作者与标题'),
+              onTap: () {
+                Navigator.of(sheetContext).pop();
+                setState(() => _cleanMode = !_cleanMode);
+                showTopToast(
+                    context, _cleanMode ? '已清屏，长按视频可恢复' : '已恢复显示');
+              },
+            ),
+
             // 下载（已下载/下载中置灰）
             Builder(builder: (_) {
               final dm = ref.read(downloadManagerProvider);
@@ -341,6 +364,7 @@ class _FeedVideoPageState extends ConsumerState<FeedVideoPage> {
   Widget build(BuildContext context) {
     return GestureDetector(
       behavior: HitTestBehavior.opaque,
+      // 单击始终暂停/继续（清屏态也一样），恢复清屏需走长按菜单
       onTap: widget.pool.toggleCurrent,
       onDoubleTap: _onDoubleTap,
       onLongPress: _onLongPress,
@@ -349,23 +373,27 @@ class _FeedVideoPageState extends ConsumerState<FeedVideoPage> {
         child: Stack(
           fit: StackFit.expand,
           children: [
-            // 底部渐变（提升文字可读性）
-            const Positioned(
+            // 底部渐变（提升文字可读性）：清屏时一并淡出
+            Positioned(
               left: 0, right: 0, bottom: 0, height: 160,
               child: IgnorePointer(
-                child: DecoratedBox(
-                  decoration: BoxDecoration(
-                    gradient: LinearGradient(
-                      begin: Alignment.topCenter,
-                      end: Alignment.bottomCenter,
-                      colors: [Colors.transparent, Colors.black54],
+                child: AnimatedOpacity(
+                  opacity: _cleanMode ? 0 : 1,
+                  duration: const Duration(milliseconds: 200),
+                  child: const DecoratedBox(
+                    decoration: BoxDecoration(
+                      gradient: LinearGradient(
+                        begin: Alignment.topCenter,
+                        end: Alignment.bottomCenter,
+                        colors: [Colors.transparent, Colors.black54],
+                      ),
                     ),
                   ),
                 ),
               ),
             ),
 
-            // 播放器（含抖音风格细进度条）
+            // 播放器（含抖音风格细进度条）——清屏时仍保留
             VideoPlayerView(
               pool: widget.pool,
               slotIndex: widget.slotIndex,
@@ -380,54 +408,60 @@ class _FeedVideoPageState extends ConsumerState<FeedVideoPage> {
             // 右侧互动栏（头像/点赞/评论/收藏 — 分享已移至长按菜单）
             Positioned(
               right: 8, bottom: 96,
-              child: InteractionBar(
-                item: widget.item,
-                onLike: widget.onLike,
-                onFavorite: widget.onFavorite,
-                onComment: widget.onComment,
+              child: _HidableOverlay(
+                hidden: _cleanMode,
+                child: InteractionBar(
+                  item: widget.item,
+                  onLike: widget.onLike,
+                  onFavorite: widget.onFavorite,
+                  onComment: widget.onComment,
+                ),
               ),
             ),
 
             // 左下信息区 + 系列标题（系列标题在信息区上方，不重叠）
             Positioned(
               left: 12, right: 88, bottom: 24,
-              child: Column(
-                crossAxisAlignment: CrossAxisAlignment.start,
-                mainAxisSize: MainAxisSize.min,
-                children: [
-                  // 系列标题（当前视频属于系列时显示，点击弹出系列列表）
-                  if (_hasSeries)
-                    GestureDetector(
-                      onTap: _showSeriesSheet,
-                      child: Container(
-                        margin: const EdgeInsets.only(bottom: 8),
-                        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
-                        decoration: BoxDecoration(
-                          color: Colors.black54,
-                          borderRadius: BorderRadius.circular(8),
-                        ),
-                        child: Row(
-                          mainAxisSize: MainAxisSize.min,
-                          children: [
-                            const Icon(Icons.playlist_play, color: Colors.white, size: 16),
-                            const SizedBox(width: 4),
-                            Text(
-                              _seriesTitle,
-                              style: const TextStyle(
-                                color: Colors.white,
-                                fontSize: 13,
-                                fontWeight: FontWeight.w600,
+              child: _HidableOverlay(
+                hidden: _cleanMode,
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    // 系列标题（当前视频属于系列时显示，点击弹出系列列表）
+                    if (_hasSeries)
+                      GestureDetector(
+                        onTap: _showSeriesSheet,
+                        child: Container(
+                          margin: const EdgeInsets.only(bottom: 8),
+                          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
+                          decoration: BoxDecoration(
+                            color: Colors.black54,
+                            borderRadius: BorderRadius.circular(8),
+                          ),
+                          child: Row(
+                            mainAxisSize: MainAxisSize.min,
+                            children: [
+                              const Icon(Icons.playlist_play, color: Colors.white, size: 16),
+                              const SizedBox(width: 4),
+                              Text(
+                                _seriesTitle,
+                                style: const TextStyle(
+                                  color: Colors.white,
+                                  fontSize: 13,
+                                  fontWeight: FontWeight.w600,
+                                ),
                               ),
-                            ),
-                            const SizedBox(width: 2),
-                            const Icon(Icons.chevron_right, color: Colors.white, size: 14),
-                          ],
+                              const SizedBox(width: 2),
+                              const Icon(Icons.chevron_right, color: Colors.white, size: 14),
+                            ],
+                          ),
                         ),
                       ),
-                    ),
-                  // 视频信息（昵称/标题/描述）
-                  VideoInfoSection(item: widget.item),
-                ],
+                    // 视频信息（昵称/标题/描述）
+                    VideoInfoSection(item: widget.item),
+                  ],
+                ),
               ),
             ),
           ],
@@ -436,3 +470,24 @@ class _FeedVideoPageState extends ConsumerState<FeedVideoPage> {
     );
   }
 }
+
+/// 可隐藏浮层：淡出 + 禁用点击。隐藏时仍占位但不拦截手势，
+/// 保证点击/长按能穿透到下层的手势层
+class _HidableOverlay extends StatelessWidget {
+  const _HidableOverlay({required this.hidden, required this.child});
+
+  final bool hidden;
+  final Widget child;
+
+  @override
+  Widget build(BuildContext context) {
+    return IgnorePointer(
+      ignoring: hidden,
+      child: AnimatedOpacity(
+        opacity: hidden ? 0 : 1,
+        duration: const Duration(milliseconds: 200),
+        child: child,
+      ),
+    );
+  }
+}
diff --git a/app/lib/screens/home/home_shell.dart b/app/lib/screens/home/home_shell.dart
index 274b545..33a4f4e 100644
--- a/app/lib/screens/home/home_shell.dart
+++ b/app/lib/screens/home/home_shell.dart
@@ -28,8 +28,9 @@ class _HomeShellState extends ConsumerState<HomeShell> {
 
   void _onTabSelected(int i) {
     if (i == _index) return;
-    // 切到非首页：挂起所有 Feed 策略的播放器池（IndexedStack 保活，
-    // suspend 会同时阻止在途 open 完成后自动播放，杜绝后台幽灵声）
+    // 切到非首页：挂起所有 Feed 策略池——suspend 记录断点后 stop 全槽位
+    // （mpv pause 停不住 HLS 预读，只有 stop 能可靠断下载）；
+    // 回首页 rebind 重新 open + seek 断点续播，缓存分片零流量（抖音行为）
     if (i != 0) {
       for (final s in _feedStrategies) {
         ref.read(feedProvider(s).notifier).pool.suspend();
diff --git a/app/pubspec.yaml b/app/pubspec.yaml
index 8ddce93..2a4c291 100644
--- a/app/pubspec.yaml
+++ b/app/pubspec.yaml
@@ -2,7 +2,7 @@ name: video_app
 description: "短视频应用（Flutter，iOS/Android 双端）"
 publish_to: 'none'
 
-version: 1.3.7+23
+version: 1.3.15+31
 
 environment:
   sdk: ^3.9.2
diff --git a/server/.env b/server/.env
index a976f79..e2b6c15 100644
--- a/server/.env
+++ b/server/.env
@@ -12,7 +12,7 @@ CELERY_RESULT_BACKEND=redis://127.0.0.1:6379/2
 # ===== JWT =====
 JWT_SECRET=0e79fddb233856d260b0072a979d483c1c07dbdb0c8c9b1d66bd3f540499093c
 ACCESS_TOKEN_TTL=7200
-REFRESH_TOKEN_TTL=2592000
+REFRESH_TOKEN_TTL=15552000
 ADMIN_TOKEN_TTL=43200
 
 # ===== 对象存储 OSS（未接 OSS 时媒体走本地 /static）=====
diff --git a/server/app/api/v1/admin.py b/server/app/api/v1/admin.py
index d016d8b..cdbee53 100644
--- a/server/app/api/v1/admin.py
+++ b/server/app/api/v1/admin.py
@@ -12,7 +12,8 @@ from fastapi import APIRouter, Depends, Query, Request
 from pydantic import BaseModel, BaseModel as _BM, Field as _F, Field as _Field
 from sqlalchemy.ext.asyncio import AsyncSession
 
-from app.core.response import ok
+from app.core import errors
+from app.core.response import ok, BizException
 from app.database import get_db
 from app.deps import AdminIdentity, require_roles
 from app.redis_client import get_redis
@@ -620,6 +621,77 @@ class _VideoSeriesBind(BaseModel):
     episode_no: int = _Field(ge=1)
 
 
+# ---------- 批量操作（必须在 /series/{series_id} 路由之前注册，否则被参数路由抢先匹配）----------
+
+class _SeriesRebuildResp(BaseModel):
+    total: int = 0
+    fixed: int = 0
+
+
+@router.post("/series/rebuild-counts")
+async def rebuild_series_counts(db: AsyncSession = Depends(get_db),
+                                admin: AdminIdentity = Depends(require_super)):
+    """重算所有系列的 total_episodes（按 status=2 的视频真实计数）"""
+    from app.models.video import Series, Video
+    from sqlalchemy import select, func
+
+    rows = (await db.execute(select(Series.id, Series.total_episodes))).all()
+    total = len(rows)
+    fixed = 0
+    for sid, old_cnt in rows:
+        new_cnt = (await db.execute(
+            select(func.count(Video.id)).where(Video.series_id == sid, Video.status == 2)
+        )).scalar_one()
+        if old_cnt != new_cnt:
+            s = await db.get(Series, sid)
+            s.total_episodes = new_cnt
+            fixed += 1
+    await db.commit()
+    return ok(_SeriesRebuildResp(total=total, fixed=fixed))
+
+
+class _SeriesBatchUpdate(BaseModel):
+    series_ids: list[int] = _Field(min_length=1, max_length=200)
+    status: int | None = _Field(None, ge=0, le=1)
+    category_id: int | None = _Field(None, ge=0)
+
+
+@router.put("/series/batch")
+async def batch_update_series(req: _SeriesBatchUpdate, request: Request,
+                              db: AsyncSession = Depends(get_db),
+                              admin: AdminIdentity = Depends(require_super)):
+    """批量编辑系列属性（当前支持 status / category_id）"""
+    from app.models.admin import AdminLog
+    from app.models.video import Series
+    from sqlalchemy import select
+
+    if req.status is None and req.category_id is None:
+        raise BizException(errors.PARAM_ERROR, "至少要传一个要修改的字段")
+
+    stmt = select(Series).where(Series.id.in_(req.series_ids))
+    rows = (await db.execute(stmt)).scalars().all()
+    affected = 0
+    for s in rows:
+        changed = False
+        if req.status is not None and s.status != req.status:
+            s.status = req.status
+            changed = True
+        if req.category_id is not None and s.category_id != req.category_id:
+            s.category_id = req.category_id
+            changed = True
+        if changed:
+            affected += 1
+
+    db.add(AdminLog(
+        admin_id=admin.admin_id, action="series_batch_update",
+        target=f"series:{','.join(str(i) for i in req.series_ids)}",
+        detail=f"status={req.status} category_id={req.category_id} affected={affected}",
+        ip=_ip(request),
+    ))
+    await db.commit()
+    return ok({"affected": affected})
+
+
 @router.post("/series")
 async def create_series(req: _SeriesCreate, db: AsyncSession = Depends(get_db),
                         admin: AdminIdentity = Depends(require_super)):
diff --git a/server/app/core/__pycache__/errors.cpython-311.pyc b/server/app/core/__pycache__/errors.cpython-311.pyc
index 5b300c8..c27c1f4 100644
Binary files a/server/app/core/__pycache__/errors.cpython-311.pyc and b/server/app/core/__pycache__/errors.cpython-311.pyc differ
diff --git a/server/app/services/__pycache__/auth_service.cpython-311.pyc b/server/app/services/__pycache__/auth_service.cpython-311.pyc
index 45067cf..1bd373f 100644
Binary files a/server/app/services/__pycache__/auth_service.cpython-311.pyc and b/server/app/services/__pycache__/auth_service.cpython-311.pyc differ
diff --git a/server/app/services/auth_service.py b/server/app/services/auth_service.py
index 90d5dd1..af2ef12 100644
--- a/server/app/services/auth_service.py
+++ b/server/app/services/auth_service.py
@@ -28,7 +28,7 @@ from app.services import config_service, invite_service, membership_service, sen
 
 logger = logging.getLogger(__name__)
 
-REFRESH_TTL = 30 * 24 * 3600
+REFRESH_TTL = settings.refresh_token_ttl  # 与 .env 的 REFRESH_TOKEN_TTL 同步
 DEACTIVATE_FREEZE_DAYS = 7