feat(home): 顶部导航随翻页联动并把推荐更名为精选

lib/core/theme/app_colors.dart

@@ -153,6 +153,10 @@ abstract final class AppColors {
   /// 列表底部「没有更多了」这类弱提示。
   static const textHint = Color(0xFF5C5C60);
   static const textTabInactive = Color(0xFFB0B0B0);
+
+  /// 首页顶部三项导航未选中文字，略暗于选中白色但保持清晰。
+  static const homeTabInactive = Color(0xFFC7C7CC);
+
   static const textFilterIcon = Color(0xFF7A7A7E);
   static const searchResultMeta = Color(0xFF9E9E9E);
 

lib/core/widgets/animated_nav_label.dart

@@ -0,0 +1,71 @@
+// Author: fruit.com.cn
+// 职责：固定顶部导航文字排版，以绘制缩放和颜色插值实现选中切换。
+import 'package:flutter/material.dart';
+
+import '../theme/app_colors.dart';
+import '../theme/app_dimens.dart';
+
+const double _inactiveScale = 0.9;
+
+/// 保留最大字号、固定字重与占位，避免选中动画触发相邻标签重新布局。
+class AnimatedNavLabel extends StatelessWidget {
+  /// [style] 指定选中态字号与颜色；字重固定，未指定时默认加粗。
+  const AnimatedNavLabel({
+    super.key,
+    required this.label,
+    required this.selected,
+    required this.style,
+    this.alignment = Alignment.bottomCenter,
+    this.selectionProgress,
+    this.inactiveColor = AppColors.textTabInactive,
+  });
+
+  final String label;
+  final bool selected;
+  final TextStyle style;
+  final Alignment alignment;
+
+  /// 未选中文字颜色；默认保持通用导航原有灰色。
+  final Color inactiveColor;
+
+  /// 页面拖动时直接使用连续进度，避免再叠加一层延迟动画。
+  final double? selectionProgress;
+
+  @override
+  Widget build(BuildContext context) {
+    final target = selected ? 1.0 : 0.0;
+    final reduceMotion = MediaQuery.disableAnimationsOf(context);
+    return Semantics(
+      selected: selected,
+      child: selectionProgress != null
+          ? _label(selectionProgress!.clamp(0.0, 1.0))
+          : TweenAnimationBuilder<double>(
+              tween: Tween(begin: target, end: target),
+              duration: reduceMotion
+                  ? Duration.zero
+                  : AppDimens.homePrimaryTabAnimationDuration,
+              curve: Curves.easeOut,
+              builder: (context, progress, _) => _label(progress),
+            ),
+    );
+  }
+
+  Widget _label(double progress) => Transform.scale(
+    scale: _inactiveScale + (1 - _inactiveScale) * progress,
+    alignment: alignment,
+    child: Text(
+      label,
+      maxLines: 1,
+      textAlign: TextAlign.left,
+      style: style.copyWith(
+        fontWeight: style.fontWeight ?? FontWeight.w700,
+        letterSpacing: 0,
+        color: Color.lerp(
+          inactiveColor,
+          style.color ?? AppColors.textPrimary,
+          progress,
+        ),
+      ),
+    ),
+  );
+}

lib/core/widgets/app_root_tab.dart

@@ -25,14 +25,14 @@ extension AppRootTabUi on AppRootTab {
 
   IconData get icon => switch (this) {
     AppRootTab.home => Icons.home_outlined,
-    AppRootTab.recommend => Icons.celebration_outlined,
+    AppRootTab.recommend => Icons.smart_display_outlined,
     AppRootTab.following => Icons.bookmark_border_rounded,
     AppRootTab.mine => Icons.person_outline_rounded,
   };
 
   IconData get selectedIcon => switch (this) {
     AppRootTab.home => Icons.home_rounded,
-    AppRootTab.recommend => Icons.celebration_rounded,
+    AppRootTab.recommend => Icons.smart_display_rounded,
     AppRootTab.following => Icons.bookmark_rounded,
     AppRootTab.mine => Icons.person_rounded,
   };

lib/l10n/app_en.arb

@@ -761,7 +761,7 @@
   "homeBadgeNew": "New",
   "homeBadgeAnime": "Anime",
   "emptyContent": "No content yet",
-  "recommendTopTab": "Recommend",
+  "recommendTopTab": "Featured",
   "playlistTopTab": "Playlists",
   "allDramasTopTab": "All Dramas",
   "weeklyHitsTitle": "This Week's Hits",

lib/l10n/app_id.arb

@@ -723,7 +723,7 @@
   "homeBadgeNew": "Baru",
   "homeBadgeAnime": "Anime",
   "emptyContent": "Belum ada konten",
-  "recommendTopTab": "Rekomendasi",
+  "recommendTopTab": "Unggulan",
   "playlistTopTab": "Daftar Putar",
   "allDramasTopTab": "Semua",
   "weeklyHitsTitle": "Hits Minggu Ini",

lib/l10n/app_localizations.dart

@@ -3271,7 +3271,7 @@ abstract class AppLocalizations {
   /// No description provided for @recommendTopTab.
   ///
   /// In en, this message translates to:
-  /// **'Recommend'**
+  /// **'Featured'**
   String get recommendTopTab;
 
   /// No description provided for @playlistTopTab.

lib/l10n/app_localizations_en.dart

@@ -1711,7 +1711,7 @@ class AppLocalizationsEn extends AppLocalizations {
   String get emptyContent => 'No content yet';
 
   @override
-  String get recommendTopTab => 'Recommend';
+  String get recommendTopTab => 'Featured';
 
   @override
   String get playlistTopTab => 'Playlists';

lib/l10n/app_localizations_id.dart

@@ -1711,7 +1711,7 @@ class AppLocalizationsId extends AppLocalizations {
   String get emptyContent => 'Belum ada konten';
 
   @override
-  String get recommendTopTab => 'Rekomendasi';
+  String get recommendTopTab => 'Unggulan';
 
   @override
   String get playlistTopTab => 'Daftar Putar';

lib/l10n/app_localizations_zh.dart

@@ -1686,7 +1686,7 @@ class AppLocalizationsZh extends AppLocalizations {
   String get emptyContent => '暂无内容';
 
   @override
-  String get recommendTopTab => '推荐';
+  String get recommendTopTab => '精选';
 
   @override
   String get playlistTopTab => '剧单';

lib/l10n/app_zh.arb

@@ -685,7 +685,7 @@
   "homeBadgeNew": "新剧",
   "homeBadgeAnime": "漫剧",
   "emptyContent": "暂无内容",
-  "recommendTopTab": "推荐",
+  "recommendTopTab": "精选",
   "playlistTopTab": "剧单",
   "allDramasTopTab": "全部短剧",
   "weeklyHitsTitle": "本週爆款推薦",

lib/pages/home/widgets/home_grid_header.dart

@@ -5,6 +5,7 @@ import 'package:flutter/material.dart';
 import '../../../core/formatting/count_format.dart';
 import '../../../core/theme/app_colors.dart';
 import '../../../core/theme/app_dimens.dart';
+import '../../../core/widgets/animated_nav_label.dart';
 import '../../../l10n/app_localizations.dart';
 
 enum HomePrimaryTab {
@@ -323,21 +324,16 @@ class _CategoryBarState extends State<_CategoryBar> {
           height: AppDimens.homePrimaryRowHeight,
           child: Align(
             alignment: Alignment.bottomLeft,
-            child: AnimatedDefaultTextStyle(
+            child: AnimatedNavLabel(
               key: Key('home-primary-label-${category.categoryId}'),
-              duration: AppDimens.homePrimaryTabAnimationDuration,
-              curve: Curves.easeOut,
-              style: TextStyle(
-                color: selected
-                    ? AppColors.navSelected
-                    : AppColors.textTabInactive,
-                fontSize: selected
-                    ? AppDimens.homePrimaryTabSelectedFont
-                    : AppDimens.homePrimaryTabFont,
-                fontWeight: selected ? FontWeight.w700 : FontWeight.w400,
+              label: category.label,
+              selected: selected,
+              alignment: Alignment.bottomLeft,
+              style: const TextStyle(
+                color: AppColors.navSelected,
+                fontSize: AppDimens.homePrimaryTabSelectedFont,
                 letterSpacing: 0,
               ),
-              child: Text(category.label, textAlign: TextAlign.left),
             ),
           ),
         ),

lib/pages/recommend/home_tab_motion_controller.dart

@@ -0,0 +1,52 @@
+// Author: fruit.com.cn
+// 职责：协调首页三页的点击动画、最终选中目标和手势中断。
+import 'package:flutter/widgets.dart';
+
+const _transitionDuration = Duration(milliseconds: 220);
+
+/// 页面移动时保留用户最终目标，防止跨页动画途中的页面抢占高亮。
+class HomeTabMotionController extends PageController {
+  /// [onSettled] 在动画结束或被手势中断时同步实际停留页面。
+  HomeTabMotionController({required this.onSettled});
+
+  final ValueChanged<int> onSettled;
+  int? _target;
+  int _revision = 0;
+  bool _disposed = false;
+
+  /// 供导航绘制连续位置；布局尚未建立时使用初始页。
+  double get pagePosition => hasClients && position.hasContentDimensions
+      ? page ?? initialPage.toDouble()
+      : initialPage.toDouble();
+
+  /// 点击跨页过程中只接受最终目标；拖动和稳定状态接受实际页。
+  bool acceptsSelection(int index) => _target == null || _target == index;
+
+  /// 点击导航时平滑移动；系统减少动画时直接到位。
+  Future<void> selectPage(int index, {required bool reduceMotion}) async {
+    final revision = ++_revision;
+    _target = index;
+    if (!hasClients) {
+      _target = null;
+      return;
+    }
+    if (reduceMotion) {
+      jumpToPage(index);
+    } else {
+      await animateToPage(
+        index,
+        duration: _transitionDuration,
+        curve: Curves.easeOut,
+      );
+    }
+    if (_disposed || revision != _revision) return;
+    _target = null;
+    if (hasClients) onSettled(pagePosition.round());
+  }
+
+  @override
+  void dispose() {
+    _disposed = true;
+    super.dispose();
+  }
+}

lib/pages/recommend/recommend_page.dart

@@ -20,12 +20,15 @@ import '../../l10n/app_localizations.dart';
 import '../home/home_feed_channel.dart';
 import '../player/open_player.dart';
 import '../player/player_view.dart';
+import 'home_tab_motion_controller.dart';
 import 'recommend_types.dart';
 import 'widgets/all_dramas_filter_grid.dart';
 import 'widgets/playlist_detail_page.dart';
 import 'widgets/recommend_sections_view.dart';
 import 'widgets/recommend_top_nav.dart';
 
+part 'recommend_page_parts.dart';
+
 class RecommendPage extends StatefulWidget {
   const RecommendPage({
     super.key,
@@ -60,7 +63,9 @@ class _RecommendPageState extends State<RecommendPage>
   static const int _maxRecommendRetries = 3;
 
   RecommendInnerTab _tab = RecommendInnerTab.feed;
-  final PageController _pageController = PageController();
+  late final _pageController = HomeTabMotionController(
+    onSettled: _onPageChanged,
+  );
   int _scrubCancelRequest = 0;
   bool _recommendDataRefreshScheduled = false;
   bool _recommendRefreshInFlight = false;
@@ -274,12 +279,16 @@ class _RecommendPageState extends State<RecommendPage>
               right: 0,
               child: SafeArea(
                 bottom: false,
-                child: RecommendTopNav(
-                  selected: _tab,
-                  onVideo: _tab == RecommendInnerTab.feed,
-                  onSelected: _selectTab,
-                  onSearch: _handleSearch,
-                  onGift: widget.onOpenWallet,
+                child: ListenableBuilder(
+                  listenable: _pageController,
+                  builder: (context, _) => RecommendTopNav(
+                    selected: _tab,
+                    pagePosition: _pageController.pagePosition,
+                    onVideo: _tab == RecommendInnerTab.feed,
+                    onSelected: _selectTab,
+                    onSearch: _handleSearch,
+                    onGift: widget.onOpenWallet,
+                  ),
                 ),
               ),
             ),
@@ -401,18 +410,16 @@ class _RecommendPageState extends State<RecommendPage>
       _tab = tab;
       _scrubCancelRequest++;
     });
-    if (_pageController.hasClients) {
-      unawaited(
-        _pageController.animateToPage(
-          tab.index,
-          duration: const Duration(milliseconds: 220),
-          curve: Curves.easeOut,
-        ),
-      );
-    }
+    unawaited(
+      _pageController.selectPage(
+        tab.index,
+        reduceMotion: MediaQuery.disableAnimationsOf(context),
+      ),
+    );
   }
 
   void _onPageChanged(int index) {
+    if (!_pageController.acceptsSelection(index)) return;
     final next = RecommendInnerTab.values[index];
     if (next == _tab) return;
     setState(() {
@@ -484,110 +491,7 @@ class _RecommendPageState extends State<RecommendPage>
     );
   }
 
-  (String, String) _sectionCopy(
-    AppLocalizations l10n,
-    RecommendSectionKind section,
-  ) {
-    return switch (section) {
-      RecommendSectionKind.hits => (
-        l10n.weeklyHitsTitle,
-        l10n.weeklyHitsSubtitle,
-      ),
-      RecommendSectionKind.newReleases => (
-        l10n.weeklyNewTitle,
-        l10n.weeklyNewSubtitle,
-      ),
-      RecommendSectionKind.costume => (
-        l10n.costumeAwardsTitle,
-        l10n.costumeAwardsSubtitle,
-      ),
-    };
-  }
-
   Future<void> _openDrama(Drama drama, {String? episodeId}) async {
     await playDramaFromCatalog(context, drama, episodeId: episodeId);
   }
 }
-
-class _RecommendFeedSkeleton extends StatelessWidget {
-  const _RecommendFeedSkeleton();
-
-  @override
-  Widget build(BuildContext context) {
-    return const ColoredBox(
-      key: Key('recommend-feed-skeleton'),
-      color: AppColors.mediaBlack,
-      child: Stack(
-        children: [
-          Center(
-            child: SizedBox(
-              width: 132,
-              height: 176,
-              child: DecoratedBox(
-                decoration: BoxDecoration(
-                  color: AppColors.skeletonMedia,
-                  borderRadius: BorderRadius.all(Radius.circular(12)),
-                ),
-              ),
-            ),
-          ),
-          Positioned(
-            left: 14,
-            right: 72,
-            bottom: 42,
-            child: Column(
-              crossAxisAlignment: CrossAxisAlignment.start,
-              children: [
-                _SkeletonLine(width: 190, height: 18),
-                SizedBox(height: 10),
-                _SkeletonLine(width: 140, height: 12),
-                SizedBox(height: 8),
-                _SkeletonLine(width: 220, height: 10),
-              ],
-            ),
-          ),
-        ],
-      ),
-    );
-  }
-}
-
-class _SkeletonLine extends StatelessWidget {
-  const _SkeletonLine({required this.width, required this.height});
-
-  final double width;
-  final double height;
-
-  @override
-  Widget build(BuildContext context) {
-    return Container(
-      width: width,
-      height: height,
-      decoration: BoxDecoration(
-        color: AppColors.skeletonMedia,
-        borderRadius: BorderRadius.circular(6),
-      ),
-    );
-  }
-}
-
-class _KeepAliveTab extends StatefulWidget {
-  const _KeepAliveTab({super.key, required this.child});
-
-  final Widget child;
-
-  @override
-  State<_KeepAliveTab> createState() => _KeepAliveTabState();
-}
-
-class _KeepAliveTabState extends State<_KeepAliveTab>
-    with AutomaticKeepAliveClientMixin<_KeepAliveTab> {
-  @override
-  bool get wantKeepAlive => true;
-
-  @override
-  Widget build(BuildContext context) {
-    super.build(context);
-    return widget.child;
-  }
-}

lib/pages/recommend/recommend_page_parts.dart

@@ -0,0 +1,116 @@
+// Author: fruit.com.cn
+// 职责：首页推荐流加载骨架、页面保活与静态文案，保持原有行为。
+part of 'recommend_page.dart';
+
+const double _posterWidth = 132;
+const double _posterHeight = 176;
+const double _posterRadius = 12;
+const double _copyLeft = 14;
+const double _copyRight = 72;
+const double _copyBottom = 42;
+const double _titleWidth = 190;
+const double _titleHeight = 18;
+const double _subtitleWidth = 140;
+const double _subtitleHeight = 12;
+const double _descriptionWidth = 220;
+const double _descriptionHeight = 10;
+const double _titleGap = 10;
+const double _subtitleGap = 8;
+const double _lineRadius = 6;
+
+class _RecommendFeedSkeleton extends StatelessWidget {
+  const _RecommendFeedSkeleton();
+
+  @override
+  Widget build(BuildContext context) => const ColoredBox(
+    key: Key('recommend-feed-skeleton'),
+    color: AppColors.mediaBlack,
+    child: Stack(
+      children: [
+        Center(
+          child: SizedBox(
+            width: _posterWidth,
+            height: _posterHeight,
+            child: DecoratedBox(
+              decoration: BoxDecoration(
+                color: AppColors.skeletonMedia,
+                borderRadius: BorderRadius.all(Radius.circular(_posterRadius)),
+              ),
+            ),
+          ),
+        ),
+        Positioned(
+          left: _copyLeft,
+          right: _copyRight,
+          bottom: _copyBottom,
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              _SkeletonLine(width: _titleWidth, height: _titleHeight),
+              SizedBox(height: _titleGap),
+              _SkeletonLine(width: _subtitleWidth, height: _subtitleHeight),
+              SizedBox(height: _subtitleGap),
+              _SkeletonLine(
+                width: _descriptionWidth,
+                height: _descriptionHeight,
+              ),
+            ],
+          ),
+        ),
+      ],
+    ),
+  );
+}
+
+class _SkeletonLine extends StatelessWidget {
+  const _SkeletonLine({required this.width, required this.height});
+
+  final double width;
+  final double height;
+
+  @override
+  Widget build(BuildContext context) => Container(
+    width: width,
+    height: height,
+    decoration: BoxDecoration(
+      color: AppColors.skeletonMedia,
+      borderRadius: BorderRadius.circular(_lineRadius),
+    ),
+  );
+}
+
+class _KeepAliveTab extends StatefulWidget {
+  const _KeepAliveTab({super.key, required this.child});
+
+  final Widget child;
+
+  @override
+  State<_KeepAliveTab> createState() => _KeepAliveTabState();
+}
+
+class _KeepAliveTabState extends State<_KeepAliveTab>
+    with AutomaticKeepAliveClientMixin<_KeepAliveTab> {
+  @override
+  bool get wantKeepAlive => true;
+
+  @override
+  Widget build(BuildContext context) {
+    super.build(context);
+    return widget.child;
+  }
+}
+
+(String, String) _sectionCopy(
+  AppLocalizations l10n,
+  RecommendSectionKind section,
+) => switch (section) {
+  RecommendSectionKind.hits => (l10n.weeklyHitsTitle, l10n.weeklyHitsSubtitle),
+  RecommendSectionKind.newReleases => (
+    l10n.weeklyNewTitle,
+    l10n.weeklyNewSubtitle,
+  ),
+  RecommendSectionKind.costume => (
+    l10n.costumeAwardsTitle,
+    l10n.costumeAwardsSubtitle,
+  ),
+};

lib/pages/recommend/widgets/home_recommend_content.dart

@@ -122,7 +122,7 @@ class HomePosterCard extends StatelessWidget {
                           style: const TextStyle(
                             color: AppColors.textPrimary,
                             fontSize: 11,
-                            fontWeight: FontWeight.w600,
+                            fontWeight: FontWeight.w400,
                             height: 1.1,
                           ),
                         ),

lib/pages/recommend/widgets/recommend_channel_nav.dart

@@ -4,6 +4,7 @@ import 'package:flutter/material.dart';
 
 import '../../../core/data/models/content_category.dart';
 import '../../../core/theme/app_colors.dart';
+import '../../../core/widgets/animated_nav_label.dart';
 import '../../../l10n/app_localizations.dart';
 import 'search_gift_glyphs.dart';
 
@@ -16,7 +17,7 @@ const double _giftIconSize = 26;
 const double _underlineWidth = 26;
 const double _underlineHeight = 3;
 
-/// 推荐页（礼花 tab）顶部频道导航：频道全部来自分类接口，右侧搜索/礼物。
+/// 推荐页顶部频道导航：频道全部来自分类接口，右侧搜索/礼物。
 class RecommendChannelNav extends StatefulWidget {
   const RecommendChannelNav({
     super.key,
@@ -49,8 +50,7 @@ class _RecommendChannelNavState extends State<RecommendChannelNav> {
   final GlobalKey _scrollViewKey = GlobalKey();
   final Map<String, GlobalKey> _tabKeys = {};
 
-  GlobalKey _keyFor(String id) =>
-      _tabKeys.putIfAbsent(id, () => GlobalKey());
+  GlobalKey _keyFor(String id) => _tabKeys.putIfAbsent(id, () => GlobalKey());
 
   @override
   void didUpdateWidget(covariant RecommendChannelNav oldWidget) {
@@ -82,9 +82,10 @@ class _RecommendChannelNavState extends State<RecommendChannelNav> {
     final tabLeft = tabBox.localToGlobal(Offset.zero).dx;
     final relative = tabLeft - viewportLeft;
     final position = _scrollController.position;
-    final target =
-        (position.pixels + relative - _revealLeftInset)
-            .clamp(0.0, position.maxScrollExtent);
+    final target = (position.pixels + relative - _revealLeftInset).clamp(
+      0.0,
+      position.maxScrollExtent,
+    );
     if ((target - position.pixels).abs() < 0.5) return;
     _scrollController.animateTo(
       target,
@@ -147,7 +148,10 @@ class _RecommendChannelNavState extends State<RecommendChannelNav> {
               ),
               iconSize: _searchIconSize,
               color: AppColors.textPrimary,
-              icon: SearchGlyph(size: _searchIconSize, color: AppColors.textPrimary),
+              icon: SearchGlyph(
+                size: _searchIconSize,
+                color: AppColors.textPrimary,
+              ),
             ),
           ),
           if (widget.onGift != null)
@@ -188,18 +192,16 @@ class _RecommendChannelNavState extends State<RecommendChannelNav> {
         children: [
           // 补偿文字下方的 4pt 间距 + 3pt 下划线，让文字视觉中心与右侧图标对齐。
           const SizedBox(height: 4 + _underlineHeight),
-          Text(
-            label,
-            maxLines: 1,
-            style: TextStyle(
+          AnimatedNavLabel(
+            label: label,
+            selected: selected,
+            style: const TextStyle(
               color: AppColors.textPrimary,
               fontSize: _tabFont,
-              fontWeight: selected ? FontWeight.w700 : FontWeight.w400,
+              fontWeight: FontWeight.w400,
               letterSpacing: 0,
               height: 1.0,
-              shadows: const [
-                Shadow(color: AppColors.mediaBlack, blurRadius: 6),
-              ],
+              shadows: [Shadow(color: AppColors.mediaBlack, blurRadius: 6)],
             ),
           ),
           const SizedBox(height: 4),

lib/pages/recommend/widgets/recommend_top_nav.dart

@@ -4,13 +4,14 @@ import 'package:flutter/material.dart';
 
 import '../../../core/theme/app_colors.dart';
 import '../../../core/theme/app_dimens.dart';
+import '../../../core/widgets/animated_nav_label.dart';
 import '../../../l10n/app_localizations.dart';
 import '../recommend_types.dart';
 import 'search_gift_glyphs.dart';
 
 const double _navHeight = 56;
 const double _tabGap = 20;
-const double _tabFont = 17;
+const double _tabFont = 18;
 const double _maxNavigationTextScale = 1.3;
 const double _searchIconSize = 26;
 const double _giftIconSize = 26;
@@ -25,6 +26,7 @@ class RecommendTopNav extends StatelessWidget {
     required this.onSearch,
     this.onVideo = false,
     this.onGift,
+    this.pagePosition,
   });
 
   static const double height = _navHeight;
@@ -34,6 +36,9 @@ class RecommendTopNav extends StatelessWidget {
   final VoidCallback onSearch;
   final bool onVideo;
 
+  /// 首页横向页面的连续位置，用于文字和下划线跟手过渡。
+  final double? pagePosition;
+
   /// 右上角金色礼物盒（钱包入口）；为空时不显示。
   final VoidCallback? onGift;
 
@@ -65,14 +70,7 @@ class RecommendTopNav extends StatelessWidget {
                   children: [
                     for (var index = 0; index < items.length; index++) ...[
                       if (index > 0) const SizedBox(width: _tabGap),
-                      _tab(
-                        key: Key('recommend-tab-${items[index].$3}'),
-                        code: items[index].$3,
-                        label: items[index].$2,
-                        selected: selected == items[index].$1,
-                        shadows: shadows,
-                        onTap: () => onSelected(items[index].$1),
-                      ),
+                      _tab(items[index], shadows, context),
                     ],
                   ],
                 ),
@@ -120,47 +118,79 @@ class RecommendTopNav extends StatelessWidget {
     );
   }
 
-  Widget _tab({
-    required Key key,
-    required String code,
-    required String label,
-    required bool selected,
-    required List<Shadow>? shadows,
-    required VoidCallback onTap,
-  }) {
+  Widget _tab(
+    (RecommendInnerTab, String, String) item,
+    List<Shadow>? shadows,
+    BuildContext context,
+  ) {
+    final (tab, label, code) = item;
+    final isSelected = selected == tab;
+    final position = pagePosition;
+    final progress = position == null
+        ? null
+        : (1 - (position - tab.index).abs()).clamp(0.0, 1.0);
     return GestureDetector(
-      key: key,
+      key: Key('recommend-tab-$code'),
       behavior: HitTestBehavior.opaque,
-      onTap: onTap,
+      onTap: () => onSelected(tab),
       child: Column(
         mainAxisAlignment: MainAxisAlignment.center,
         children: [
           // 补偿文字下方的 4pt 间距 + 3pt 下划线，让文字视觉中心与右侧图标对齐。
           const SizedBox(height: 4 + _underlineHeight),
-          Text(
-            label,
-            maxLines: 1,
+          AnimatedNavLabel(
+            label: label,
+            selected: isSelected,
+            selectionProgress: progress,
+            inactiveColor: AppColors.homeTabInactive,
             style: TextStyle(
               color: AppColors.textPrimary,
               fontSize: _tabFont,
-              fontWeight: selected ? FontWeight.w700 : FontWeight.w400,
+              fontWeight: FontWeight.w400,
               letterSpacing: 0,
               height: 1.0,
               shadows: shadows,
             ),
           ),
           const SizedBox(height: 4),
-          Container(
-            key: Key('recommend-tab-$code-underline'),
-            width: _underlineWidth,
-            height: _underlineHeight,
-            decoration: BoxDecoration(
-              color: selected ? AppColors.brandRed : AppColors.transparent,
-              borderRadius: BorderRadius.circular(_underlineHeight / 2),
-            ),
+          _underline(
+            code,
+            progress,
+            isSelected,
+            MediaQuery.disableAnimationsOf(context),
           ),
         ],
       ),
     );
   }
+
+  Widget _underline(
+    String code,
+    double? progress,
+    bool isSelected,
+    bool reduceMotion,
+  ) {
+    if (progress != null) return _line(code, progress);
+    final target = isSelected ? 1.0 : 0.0;
+    return TweenAnimationBuilder<double>(
+      tween: Tween(begin: target, end: target),
+      duration: reduceMotion
+          ? Duration.zero
+          : AppDimens.homePrimaryTabAnimationDuration,
+      curve: Curves.easeOut,
+      builder: (_, value, _) => _line(code, value),
+    );
+  }
+
+  Widget _line(String code, double progress) => Container(
+    key: Key('recommend-tab-$code-underline'),
+    width: _underlineWidth,
+    height: _underlineHeight,
+    decoration: BoxDecoration(
+      color: progress == 0
+          ? AppColors.transparent
+          : AppColors.brandRed.withValues(alpha: progress),
+      borderRadius: BorderRadius.circular(_underlineHeight / 2),
+    ),
+  );
 }

test/core/animated_nav_label_test.dart

@@ -0,0 +1,110 @@
+// Author: fruit.com.cn
+// 职责：验证顶部标签双向过渡、固定布局和减少动画行为。
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/theme/app_colors.dart';
+import 'package:fruitshorts/core/widgets/animated_nav_label.dart';
+
+const _halfDuration = Duration(milliseconds: 90);
+const _duration = Duration(milliseconds: 180);
+const _style = TextStyle(fontSize: 20, color: AppColors.navSelected);
+const _firstKey = Key('first');
+const _secondKey = Key('second');
+
+Widget _labels(bool firstSelected, {bool reduceMotion = false}) {
+  return MaterialApp(
+    home: MediaQuery(
+      data: MediaQueryData(
+        devicePixelRatio: 3,
+        disableAnimations: reduceMotion,
+      ),
+      child: Center(
+        child: Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            AnimatedNavLabel(
+              key: _firstKey,
+              label: '精选 Featured',
+              selected: firstSelected,
+              style: _style,
+            ),
+            AnimatedNavLabel(
+              key: _secondKey,
+              label: '推荐 Rekomendasi',
+              selected: !firstSelected,
+              style: _style,
+            ),
+          ],
+        ),
+      ),
+    ),
+  );
+}
+
+double _scale(WidgetTester tester, Key key) {
+  final transform = tester.widget<Transform>(
+    find.descendant(of: find.byKey(key), matching: find.byType(Transform)),
+  );
+  return transform.transform.entry(0, 0);
+}
+
+Color _color(WidgetTester tester, Key key) {
+  return tester
+      .widget<Text>(
+        find.descendant(of: find.byKey(key), matching: find.byType(Text)),
+      )
+      .style!
+      .color!;
+}
+
+void main() {
+  testWidgets('should_cross_animate_without_relayout_when_selection_changes', (
+    tester,
+  ) async {
+    await tester.pumpWidget(_labels(true));
+    final firstRect = tester.getRect(find.byKey(_firstKey));
+    final secondRect = tester.getRect(find.byKey(_secondKey));
+    await tester.pumpWidget(_labels(false));
+    await tester.pump(_halfDuration);
+
+    expect(_scale(tester, _firstKey), inExclusiveRange(0.9, 1.0));
+    expect(_scale(tester, _secondKey), inExclusiveRange(0.9, 1.0));
+    expect(_color(tester, _firstKey), isNot(AppColors.navSelected));
+    expect(_color(tester, _firstKey), isNot(AppColors.textTabInactive));
+    expect(_color(tester, _secondKey), isNot(AppColors.navSelected));
+    expect(_color(tester, _secondKey), isNot(AppColors.textTabInactive));
+    expect(tester.getRect(find.byKey(_firstKey)), firstRect);
+    expect(tester.getRect(find.byKey(_secondKey)), secondRect);
+    await tester.pump(_duration);
+    expect(_scale(tester, _firstKey), closeTo(0.9, 0.0001));
+    expect(_scale(tester, _secondKey), 1);
+    expect(_color(tester, _secondKey), AppColors.navSelected);
+    expect(tester.getRect(find.byKey(_secondKey)), secondRect);
+  });
+
+  testWidgets('should_continue_from_current_value_when_selection_reverses', (
+    tester,
+  ) async {
+    await tester.pumpWidget(_labels(true));
+    await tester.pumpWidget(_labels(false));
+    await tester.pump(_halfDuration);
+    final scale = _scale(tester, _firstKey);
+    final color = _color(tester, _firstKey);
+    await tester.pumpWidget(_labels(true));
+    expect(_scale(tester, _firstKey), scale);
+    expect(_color(tester, _firstKey), color);
+    await tester.pump(_duration);
+    expect(_scale(tester, _firstKey), 1);
+  });
+
+  testWidgets('should_skip_transition_when_reduce_motion_is_enabled', (
+    tester,
+  ) async {
+    await tester.pumpWidget(_labels(true, reduceMotion: true));
+    await tester.pumpWidget(_labels(false, reduceMotion: true));
+    await tester.pump();
+    expect(_scale(tester, _firstKey), closeTo(0.9, 0.0001));
+    expect(_color(tester, _secondKey), AppColors.navSelected);
+    expect(tester.binding.hasScheduledFrame, isFalse);
+  });
+}

test/home/home_featured_label_test.dart

@@ -0,0 +1,66 @@
+// Author: fruit.com.cn
+// 职责：首页顶部精选与底部推荐使用不同文案，覆盖支持的三种语言。
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/widgets/app_root_tab.dart';
+import 'package:fruitshorts/l10n/app_localizations.dart';
+import 'package:fruitshorts/pages/recommend/recommend_types.dart';
+import 'package:fruitshorts/pages/recommend/widgets/recommend_top_nav.dart';
+
+const _labels = [
+  ('zh', '精选', '推荐', '剧单', '全部短剧'),
+  ('en', 'Featured', 'Recommend', 'Playlists', 'All Dramas'),
+  ('id', 'Unggulan', 'Rekomendasi', 'Daftar Putar', 'Semua'),
+];
+
+void main() {
+  for (final (language, featured, recommend, playlists, all) in _labels) {
+    testWidgets(
+      'should_distinguish_featured_from_recommend_when_locale_is_$language',
+      (tester) async {
+        await tester.pumpWidget(_host(language));
+        await tester.pumpAndSettle();
+        final top = find.byKey(const Key('recommend-top-nav'));
+        final bottom = find.byKey(const Key('tab-recommend'));
+        expect(
+          find.descendant(of: top, matching: find.text(featured)),
+          findsOneWidget,
+        );
+        expect(
+          find.descendant(of: top, matching: find.text(recommend)),
+          findsNothing,
+        );
+        expect(
+          find.descendant(of: bottom, matching: find.text(recommend)),
+          findsOneWidget,
+        );
+        expect(
+          find.descendant(of: top, matching: find.text(playlists)),
+          findsOneWidget,
+        );
+        expect(
+          find.descendant(of: top, matching: find.text(all)),
+          findsOneWidget,
+        );
+        expect(tester.takeException(), isNull);
+      },
+    );
+  }
+}
+
+Widget _host(String language) => MaterialApp(
+  locale: Locale(language),
+  localizationsDelegates: AppLocalizations.localizationsDelegates,
+  supportedLocales: AppLocalizations.supportedLocales,
+  home: Scaffold(
+    body: RecommendTopNav(
+      selected: RecommendInnerTab.feed,
+      onSelected: (_) {},
+      onSearch: () {},
+    ),
+    bottomNavigationBar: AppRootBottomNav(
+      selected: AppRootTab.home,
+      onSelected: (_) {},
+    ),
+  ),
+);

test/home/home_grid_layout_test.dart

@@ -13,6 +13,8 @@ import 'package:fruitshorts/core/data/repositories/playback_repository.dart';
 import 'package:fruitshorts/core/data/repositories/watch_history_repository.dart';
 import 'package:fruitshorts/core/theme/app_colors.dart';
 import 'package:fruitshorts/pages/player/player_view.dart';
+import 'package:fruitshorts/pages/recommend/recommend_types.dart';
+import 'package:fruitshorts/pages/recommend/widgets/recommend_top_nav.dart';
 import 'package:shared_preferences_platform_interface/in_memory_shared_preferences_async.dart';
 import 'package:shared_preferences_platform_interface/shared_preferences_async_platform_interface.dart';
 
@@ -50,7 +52,7 @@ void main() {
         .toList();
     expect(centers, orderedEquals(centers.toList()..sort()));
     expect(find.byKey(const Key('recommend-section-hits')), findsNothing);
-    expect(find.text('Featured'), findsNothing);
+    expect(find.text('Featured'), findsOneWidget);
     expect(find.text('Categories'), findsNothing);
     expect(find.text('Charts'), findsNothing);
     expect(find.byKey(const Key('mine-mini-player')), findsNothing);
@@ -173,7 +175,7 @@ void main() {
         matching: find.text('Playlists'),
       ),
     );
-    expect(selected.style?.fontWeight, FontWeight.w700);
+    expect(selected.style?.fontWeight, FontWeight.w400);
     expect(
       tester.getRect(find.byKey(const Key('recommend-top-nav'))),
       topNavBefore,
@@ -191,6 +193,46 @@ void main() {
     expect(find.byKey(const Key('recommend-tab-recommend')), findsOneWidget);
   });
 
+  testWidgets('should_follow_partial_swipe_before_selected_page_changes', (
+    tester,
+  ) async {
+    await _pumpApp(tester, _PagedCatalogRepository());
+    final pages = find.byKey(const Key('recommend-tab-page-view'));
+    final gesture = await tester.startGesture(tester.getCenter(pages));
+    await gesture.moveBy(const Offset(-30, 0));
+    await tester.pump();
+    await gesture.moveBy(const Offset(-80, 0));
+    await tester.pump();
+    final nav = tester.widget<RecommendTopNav>(find.byType(RecommendTopNav));
+    expect(nav.pagePosition, inExclusiveRange(0.0, 0.5));
+    final underline = tester.widget<Container>(
+      find.byKey(const Key('recommend-tab-playlist-underline')),
+    );
+    final color = (underline.decoration! as BoxDecoration).color!;
+    expect(color.a, inExclusiveRange(0.0, 0.5));
+    await gesture.up();
+    await tester.pumpAndSettle();
+    _drainLayoutExceptions(tester);
+  });
+
+  testWidgets(
+    'should_keep_all_dramas_selected_during_direct_cross_page_click',
+    (tester) async {
+      await _pumpApp(tester, _PagedCatalogRepository());
+      await tester.ensureVisible(find.byKey(const Key('recommend-tab-all')));
+      await tester.pumpAndSettle();
+      await tester.tap(find.byKey(const Key('recommend-tab-all')));
+      await tester.pump();
+      await tester.pump(const Duration(milliseconds: 70));
+      final nav = tester.widget<RecommendTopNav>(find.byType(RecommendTopNav));
+      expect(nav.pagePosition, inExclusiveRange(0.5, 1.5));
+      expect(nav.selected, RecommendInnerTab.allDramas);
+      await tester.pumpAndSettle();
+      _drainLayoutExceptions(tester);
+      expect(find.byKey(const Key('all-dramas-grid')), findsOneWidget);
+    },
+  );
+
   testWidgets('should_load_next_page_without_expanding_page_size', (
     tester,
   ) async {

test/home/home_nav_ui_test.dart

@@ -67,10 +67,7 @@ void main() {
       tester.getCenter(searchEntry).dy,
       closeTo(tester.getCenter(walletEntry).dy, 0.1),
     );
-    expect(
-      tester.getTopRight(walletEntry).dx,
-      closeTo(390 - 8, 0.1),
-    );
+    expect(tester.getTopRight(walletEntry).dx, closeTo(390 - 8, 0.1));
     expect(
       tester.getTopRight(searchEntry).dx,
       closeTo(tester.getTopLeft(walletEntry).dx, 0.1),
@@ -160,7 +157,7 @@ void main() {
     expect(
       find.descendant(
         of: find.byKey(const Key('tab-recommend')),
-        matching: find.byIcon(Icons.celebration_outlined),
+        matching: find.byIcon(Icons.smart_display_outlined),
       ),
       findsOneWidget,
     );
@@ -191,7 +188,7 @@ void main() {
     expect(
       find.descendant(
         of: find.byKey(const Key('tab-recommend')),
-        matching: find.byIcon(Icons.celebration_rounded),
+        matching: find.byIcon(Icons.smart_display_rounded),
       ),
       findsOneWidget,
     );

test/home/home_preview_layout_test.dart

@@ -198,6 +198,11 @@ void main() {
       posterUrl: '',
       genre: 'Romance',
       category: 'Urban',
+      types: [
+        {'en': 'Romance'},
+        {'en': 'Urban'},
+        {'en': 'Revenge'},
+      ],
       totalEpisodes: 8,
       freeEpisodes: 8,
       viewCount: 419000,
@@ -255,7 +260,7 @@ void main() {
     );
     expect(seriesTitle.data, 'Feed Drama');
     expect(find.text('Episode 2'), findsNothing);
-    expect(seriesTitle.style?.fontSize, 17);
+    expect(seriesTitle.style?.fontSize, 18);
     expect(seriesTitle.style?.fontWeight, FontWeight.w400);
     expect(seriesTitle.style?.color, AppColors.textPrimary);
     final seriesChevron = tester.widget<Icon>(
@@ -284,11 +289,13 @@ void main() {
     expect(find.byKey(const Key('home-feed-full-series')), findsOneWidget);
     expect(find.byKey(const Key('home-feed-tags')), findsOneWidget);
     expect(find.byKey(const Key('home-feed-tag-Romance')), findsOneWidget);
+    expect(find.byKey(const Key('home-feed-hot-badge')), findsNothing);
     expect(find.byKey(const Key('home-feed-tag-Urban')), findsOneWidget);
+    expect(find.byKey(const Key('home-feed-tag-Revenge')), findsNothing);
     final collapsedSynopsis = tester.widget<Text>(
       find.byKey(const Key('home-feed-synopsis')),
     );
-    expect(collapsedSynopsis.maxLines, 1);
+    expect(collapsedSynopsis.maxLines, 2);
     expect(collapsedSynopsis.overflow, TextOverflow.ellipsis);
     expect(find.byKey(const Key('home-feed-synopsis-more')), findsOneWidget);
     await tester.tap(find.byKey(const Key('home-feed-synopsis-more')));
@@ -302,8 +309,9 @@ void main() {
           .widget<Text>(find.byKey(const Key('home-feed-synopsis-expanded')))
           .textSpan!
           .toPlainText(),
-      allOf(contains('EP2'), contains('dangerous city')),
+      contains('dangerous city'),
     );
+    expect(find.text('Episode 2 / 8'), findsOneWidget);
     expect(
       tester.widget<Text>(find.byKey(const Key('rail-like-count'))).data,
       '1006',
@@ -358,10 +366,10 @@ void main() {
     final likeRect = tester.getRect(find.byKey(const Key('rail-like')));
     final commentsRect = tester.getRect(find.byKey(const Key('rail-comments')));
     final shareRect = tester.getRect(find.byKey(const Key('rail-share')));
-    // 新版互动栏顺序：收藏 → 评论 → 喜欢 → 分享，间距 12。
-    expect(commentsRect.top - saveRect.bottom, closeTo(12, 0.1));
-    expect(likeRect.top - commentsRect.bottom, closeTo(12, 0.1));
-    expect(shareRect.top - likeRect.bottom, closeTo(12, 0.1));
+    // 互动栏顺序：收藏 → 评论 → 喜欢 → 分享，紧凑间距 6。
+    expect(commentsRect.top - saveRect.bottom, closeTo(6, 0.1));
+    expect(likeRect.top - commentsRect.bottom, closeTo(6, 0.1));
+    expect(shareRect.top - likeRect.bottom, closeTo(6, 0.1));
     expect(
       tester.getRect(find.byKey(const Key('home-feed-action-rail'))).right,
       closeTo(
@@ -582,9 +590,13 @@ void main() {
     final overlayRect = tester.getRect(
       find.byKey(const Key('home-feed-gesture')),
     );
-    // 观看条与底部进度条共用同一组左右边距（各 20pt），宽度一致。
+    // 观看条与左侧信息等宽，进度条仍横跨整个页面，避开右侧互动栏。
     expect(bar.left, closeTo(overlayRect.left + 20, 0.1));
-    expect(bar.width, closeTo(overlayRect.width - 40, 0.1));
+    final infoRect = tester.getRect(
+      find.byKey(const Key('home-feed-info-panel')),
+    );
+    expect(bar.width, closeTo(infoRect.width, 0.1));
+    expect(bar.right, closeTo(infoRect.right, 0.1));
     expect(
       bar.left,
       closeTo(
@@ -594,9 +606,8 @@ void main() {
     );
     expect(
       bar.width,
-      closeTo(
+      lessThan(
         tester.getRect(find.byKey(const Key('home-feed-progress'))).width,
-        0.1,
       ),
     );
     // 进度线贴着浮层底部（线心距底 4pt），且位于观看条下方。
@@ -609,10 +620,10 @@ void main() {
       tester
           .widget<Material>(find.byKey(const Key('home-feed-full-series-bg')))
           .color,
-      AppColors.textPrimary.withValues(alpha: 0.15),
+      Colors.transparent,
     );
     expect(
-      tester.getRect(find.textContaining('Watch full series')).center.dy,
+      tester.getRect(find.text('Watch all')).center.dy,
       closeTo(bar.center.dy, 2),
     );
     expect(

test/home/top_navigation_motion_test.dart

@@ -0,0 +1,149 @@
+// Author: fruit.com.cn
+// 职责：验证三种顶部导航接入稳定文字过渡并保留点击与选中语义。
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/data/models/content_category.dart';
+import 'package:fruitshorts/core/widgets/animated_nav_label.dart';
+import 'package:fruitshorts/l10n/app_localizations.dart';
+import 'package:fruitshorts/pages/home/widgets/home_grid_header.dart';
+import 'package:fruitshorts/pages/recommend/recommend_types.dart';
+import 'package:fruitshorts/pages/recommend/widgets/recommend_channel_nav.dart';
+import 'package:fruitshorts/pages/recommend/widgets/recommend_top_nav.dart';
+
+const _midpoint = Duration(milliseconds: 90);
+const _duration = Duration(milliseconds: 180);
+const _categories = [
+  ContentCategory(id: 'featured', name: '精选'),
+  ContentCategory(id: 'new', name: '新剧'),
+];
+const _shortcuts = [
+  HomeGridCategoryShortcut(
+    label: '精选',
+    categoryName: 'featured',
+    categoryId: 'featured',
+    tab: HomePrimaryTab.featured,
+  ),
+  HomeGridCategoryShortcut(
+    label: '新剧',
+    categoryName: 'new',
+    categoryId: 'new',
+    tab: HomePrimaryTab.newReleases,
+  ),
+];
+
+Widget _host(Widget child) => MaterialApp(
+  locale: const Locale('zh'),
+  localizationsDelegates: AppLocalizations.localizationsDelegates,
+  supportedLocales: AppLocalizations.supportedLocales,
+  home: Scaffold(body: child),
+);
+
+double _scale(WidgetTester tester, Finder label) {
+  return tester
+      .widget<Transform>(
+        find.descendant(of: label, matching: find.byType(Transform)),
+      )
+      .transform
+      .entry(0, 0);
+}
+
+Future<void> _verifyTransition(
+  WidgetTester tester,
+  Widget Function(bool) build,
+) async {
+  await tester.pumpWidget(_host(build(true)));
+  await tester.pumpAndSettle();
+  final labels = find.byType(AnimatedNavLabel);
+  final rects = [tester.getRect(labels.at(0)), tester.getRect(labels.at(1))];
+  await tester.pumpWidget(_host(build(false)));
+  await tester.pump(_midpoint);
+  expect(_scale(tester, labels.at(0)), inExclusiveRange(0.9, 1.0));
+  expect(_scale(tester, labels.at(1)), inExclusiveRange(0.9, 1.0));
+  expect(tester.getRect(labels.at(0)), rects[0]);
+  expect(tester.getRect(labels.at(1)), rects[1]);
+  await tester.pump(_duration);
+  expect(tester.getRect(labels.at(1)), rects[1]);
+  final semantics = tester.widget<Semantics>(
+    find.descendant(of: labels.at(1), matching: find.byType(Semantics)).first,
+  );
+  expect(semantics.properties.selected, isTrue);
+}
+
+void main() {
+  testWidgets('should_keep_channel_labels_regular_when_selection_changes', (
+    tester,
+  ) async {
+    const categories = [
+      ContentCategory(id: 'featured', name: '精选'),
+      ContentCategory(id: 'weekly', name: '本周必看'),
+    ];
+    for (final selected in categories) {
+      await tester.pumpWidget(
+        _host(
+          RecommendChannelNav(
+            categories: categories,
+            selectedId: selected.id,
+            onSelected: (_) {},
+            onSearch: () {},
+          ),
+        ),
+      );
+      await tester.pumpAndSettle();
+      for (final category in categories) {
+        final text = tester.widget<Text>(find.text(category.name));
+        expect(text.style?.fontWeight, FontWeight.w400);
+        expect(text.style?.fontSize, 17);
+      }
+      expect(tester.takeException(), isNull);
+    }
+  });
+
+  testWidgets('should_keep_home_labels_stable_when_category_changes', (
+    tester,
+  ) async {
+    int? tapped;
+    HomeGridHeader header(bool first) => HomeGridHeader(
+      callbacks: HomeGridCallbacks(
+        onSearch: () {},
+        onOpenVip: () {},
+        onOpenWallet: () {},
+        onOpenFilter: () {},
+      ),
+      categories: _shortcuts,
+      selectedIndex: first ? 0 : 1,
+      onSectionSelected: (index) => tapped = index,
+    );
+    await _verifyTransition(tester, header);
+    await tester.tap(find.byKey(const Key('home-primary-label-new')));
+    expect(tapped, 1);
+  });
+
+  testWidgets('should_keep_inner_nav_labels_stable_when_tab_changes', (
+    tester,
+  ) async {
+    RecommendInnerTab? tapped;
+    RecommendTopNav nav(bool first) => RecommendTopNav(
+      selected: first ? RecommendInnerTab.feed : RecommendInnerTab.playlists,
+      onSelected: (tab) => tapped = tab,
+      onSearch: () {},
+    );
+    await _verifyTransition(tester, nav);
+    await tester.tap(find.byKey(const Key('recommend-tab-playlist')));
+    expect(tapped, RecommendInnerTab.playlists);
+  });
+
+  testWidgets('should_keep_channel_labels_stable_when_selection_changes', (
+    tester,
+  ) async {
+    String? tapped;
+    RecommendChannelNav nav(bool first) => RecommendChannelNav(
+      categories: _categories,
+      selectedId: first ? 'featured' : 'new',
+      onSelected: (id) => tapped = id,
+      onSearch: () {},
+    );
+    await _verifyTransition(tester, nav);
+    await tester.tap(find.byKey(const Key('recommend-tab-new')));
+    expect(tapped, 'new');
+  });
+}

test/recommend/home_poster_badge_weight_test.dart

@@ -0,0 +1,73 @@
+// Author: fruit.com.cn
+// 职责：验证推荐页封面标签使用常规字重，保留原有样式与点击。
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/data/models/drama.dart';
+import 'package:fruitshorts/core/theme/app_colors.dart';
+import 'package:fruitshorts/l10n/app_localizations.dart';
+import 'package:fruitshorts/pages/recommend/widgets/home_recommend_content.dart';
+
+const _tag = '热播';
+const _fallback = '上新';
+const _posterWidth = 110.0;
+const _posterHeight = 230.0;
+
+void main() {
+  for (final tag in [_tag, '']) {
+    testWidgets(
+      'should_keep_badge_regular_when_using_${tag.isEmpty ? 'fallback' : 'tag'}',
+      (tester) async {
+        var taps = 0;
+        await tester.pumpWidget(_host(tag, () => taps++));
+        await tester.pumpAndSettle();
+        final label = find.text(tag.isEmpty ? _fallback : tag);
+        final text = tester.widget<Text>(label);
+        expect(text.style?.fontWeight, FontWeight.w400);
+        expect(text.style?.fontSize, 11);
+        expect(text.style?.color, AppColors.textPrimary);
+        final badge = tester.widget<Container>(
+          find.ancestor(of: label, matching: find.byType(Container)).first,
+        );
+        final decoration = badge.decoration! as BoxDecoration;
+        expect(decoration.color, AppColors.brandRed);
+        expect(decoration.borderRadius, BorderRadius.circular(6));
+        expect(decoration.boxShadow, isNull);
+        expect(
+          badge.padding,
+          const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+        );
+        final position = tester.widget<Positioned>(
+          find.ancestor(of: label, matching: find.byType(Positioned)).first,
+        );
+        expect(position.left, 8);
+        expect(position.top, 8);
+        await tester.tap(label);
+        expect(taps, 1);
+        expect(tester.takeException(), isNull);
+      },
+    );
+  }
+}
+
+Widget _host(String tag, VoidCallback onTap) => MaterialApp(
+  locale: const Locale('zh'),
+  localizationsDelegates: AppLocalizations.localizationsDelegates,
+  supportedLocales: AppLocalizations.supportedLocales,
+  home: Scaffold(
+    body: SizedBox(
+      width: _posterWidth,
+      height: _posterHeight,
+      child: HomePosterCard(
+        drama: Drama(
+          id: 'poster',
+          title: '测试短剧',
+          synopsis: '',
+          posterUrl: '',
+          tag: tag,
+        ),
+        badge: _fallback,
+        onTap: onTap,
+      ),
+    ),
+  ),
+);

test/recommend/home_tab_motion_controller_test.dart

@@ -0,0 +1,105 @@
+// Author: fruit.com.cn
+// 职责：验证首页跨页动画的目标保留、连点打断和减少动画行为。
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/pages/recommend/home_tab_motion_controller.dart';
+
+const _midpoint = Duration(milliseconds: 90);
+const _finish = Duration(milliseconds: 300);
+
+Widget _pager(HomeTabMotionController controller, List<int> accepted) =>
+    MaterialApp(
+      home: PageView(
+        controller: controller,
+        onPageChanged: (index) {
+          if (controller.acceptsSelection(index)) accepted.add(index);
+        },
+        children: const [
+          ColoredBox(color: Colors.black),
+          ColoredBox(color: Colors.red),
+          ColoredBox(color: Colors.grey),
+        ],
+      ),
+    );
+
+void main() {
+  testWidgets(
+    'should_ignore_intermediate_page_when_clicking_across_two_pages',
+    (tester) async {
+      int? settled;
+      final controller = HomeTabMotionController(
+        onSettled: (index) => settled = index,
+      );
+      addTearDown(controller.dispose);
+      final accepted = <int>[];
+      await tester.pumpWidget(_pager(controller, accepted));
+      final transition = controller.selectPage(2, reduceMotion: false);
+      await tester.pump();
+      await tester.pump(_midpoint);
+      expect(controller.pagePosition, inExclusiveRange(0.0, 2.0));
+      expect(controller.acceptsSelection(1), isFalse);
+      expect(accepted, isNot(contains(1)));
+      await tester.pump(_finish);
+      await transition;
+      expect(controller.pagePosition, 2);
+      expect(settled, 2);
+      expect(controller.acceptsSelection(1), isTrue);
+    },
+  );
+
+  testWidgets('should_keep_last_target_when_clicks_interrupt_each_other', (
+    tester,
+  ) async {
+    int? settled;
+    final controller = HomeTabMotionController(
+      onSettled: (index) => settled = index,
+    );
+    addTearDown(controller.dispose);
+    await tester.pumpWidget(_pager(controller, []));
+    final first = controller.selectPage(2, reduceMotion: false);
+    await tester.pump();
+    await tester.pump(_midpoint);
+    final last = controller.selectPage(0, reduceMotion: false);
+    await tester.pump();
+    expect(controller.acceptsSelection(2), isFalse);
+    await tester.pump(_finish);
+    await Future.wait([first, last]);
+    expect(controller.pagePosition, 0);
+    expect(settled, 0);
+  });
+
+  testWidgets('should_jump_to_target_when_reduced_motion_is_enabled', (
+    tester,
+  ) async {
+    int? settled;
+    final controller = HomeTabMotionController(
+      onSettled: (index) => settled = index,
+    );
+    addTearDown(controller.dispose);
+    await tester.pumpWidget(_pager(controller, []));
+    await controller.selectPage(2, reduceMotion: true);
+    expect(controller.pagePosition, 2);
+    expect(settled, 2);
+  });
+
+  testWidgets('should_release_target_when_user_drag_interrupts_animation', (
+    tester,
+  ) async {
+    final controller = HomeTabMotionController(onSettled: (_) {});
+    addTearDown(controller.dispose);
+    await tester.pumpWidget(_pager(controller, []));
+    final transition = controller.selectPage(2, reduceMotion: false);
+    await tester.pump();
+    await tester.pump(_midpoint);
+    final gesture = await tester.startGesture(
+      tester.getCenter(find.byType(PageView)),
+    );
+    await gesture.moveBy(const Offset(60, 0));
+    await tester.pump();
+    await transition;
+    expect(controller.acceptsSelection(0), isTrue);
+    expect(controller.acceptsSelection(1), isTrue);
+    await gesture.up();
+    await tester.pumpAndSettle();
+  });
+}

test/recommend/recommend_sections_test.dart

@@ -44,11 +44,11 @@ void main() {
     final recommendText = tester.widget<Text>(
       find.descendant(
         of: find.byKey(const Key('recommend-tab-recommend')),
-        matching: find.text('Recommend'),
+        matching: find.text('Featured'),
       ),
     );
-    expect(recommendText.style?.fontSize, 17);
-    expect(recommendText.style?.fontWeight, FontWeight.w700);
+    expect(recommendText.style?.fontSize, 18);
+    expect(recommendText.style?.fontWeight, FontWeight.w400);
     expect(recommendText.style?.color, AppColors.textPrimary);
     final playlistText = tester.widget<Text>(
       find.descendant(
@@ -56,10 +56,17 @@ void main() {
         matching: find.text('Playlists'),
       ),
     );
-    expect(playlistText.style?.fontSize, 17);
+    expect(playlistText.style?.fontSize, 18);
+    // 字形度量固定，未选中态靠绘制缩放和灰色区分，切换时不重新排版。
     expect(playlistText.style?.fontWeight, FontWeight.w400);
-    // 新版顶部 tab 未选中态也用主文字色，选中态只靠字重和下划线区分。
-    expect(playlistText.style?.color, AppColors.textPrimary);
+    expect(playlistText.style?.color, AppColors.homeTabInactive);
+    final playlistScale = tester.widget<Transform>(
+      find.descendant(
+        of: find.byKey(const Key('recommend-tab-playlist')),
+        matching: find.byType(Transform),
+      ),
+    );
+    expect(playlistScale.transform.entry(0, 0), closeTo(0.9, 0.0001));
     expect(
       tester
           .widget<IconButton>(find.byKey(const Key('recommend-search')))

test/recommend/recommend_top_nav_motion_test.dart

@@ -0,0 +1,146 @@
+// Author: fruit.com.cn
+// 职责：验证首页三标签文字和下划线随页面进度连续变化。
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/theme/app_colors.dart';
+import 'package:fruitshorts/l10n/app_localizations.dart';
+import 'package:fruitshorts/pages/recommend/recommend_types.dart';
+import 'package:fruitshorts/pages/recommend/widgets/recommend_top_nav.dart';
+
+const _pagePosition = 0.35;
+const _duration = Duration(milliseconds: 90);
+const _epsilon = 0.0001;
+
+Widget _host({
+  double? position,
+  RecommendInnerTab tab = RecommendInnerTab.feed,
+}) {
+  return MaterialApp(
+    localizationsDelegates: AppLocalizations.localizationsDelegates,
+    supportedLocales: AppLocalizations.supportedLocales,
+    home: Scaffold(
+      body: RecommendTopNav(
+        selected: tab,
+        pagePosition: position,
+        onSelected: (_) {},
+        onSearch: () {},
+      ),
+    ),
+  );
+}
+
+double _scale(WidgetTester tester, String tab) => tester
+    .widget<Transform>(
+      find.descendant(
+        of: find.byKey(Key('recommend-tab-$tab')),
+        matching: find.byType(Transform),
+      ),
+    )
+    .transform
+    .entry(0, 0);
+
+Color _underline(WidgetTester tester, String tab) {
+  final line = tester.widget<Container>(
+    find.byKey(Key('recommend-tab-$tab-underline')),
+  );
+  return (line.decoration! as BoxDecoration).color!;
+}
+
+void main() {
+  testWidgets(
+    'should_brighten_only_inactive_home_tabs_when_selection_changes',
+    (tester) async {
+      const inactive = Color(0xFFC7C7CC);
+      const codes = ['recommend', 'playlist', 'all'];
+      for (final tab in RecommendInnerTab.values) {
+        await tester.pumpWidget(
+          _host(position: tab.index.toDouble(), tab: tab),
+        );
+        for (final (index, code) in codes.indexed) {
+          final text = tester.widget<Text>(
+            find.descendant(
+              of: find.byKey(Key('recommend-tab-$code')),
+              matching: find.byType(Text),
+            ),
+          );
+          expect(
+            text.style?.color,
+            index == tab.index ? AppColors.textPrimary : inactive,
+          );
+        }
+      }
+      await tester.pumpWidget(_host(position: _pagePosition));
+      final text = tester.widget<Text>(
+        find.descendant(
+          of: find.byKey(const Key('recommend-tab-playlist')),
+          matching: find.byType(Text),
+        ),
+      );
+      expect(
+        text.style?.color,
+        Color.lerp(inactive, AppColors.textPrimary, _pagePosition),
+      );
+      expect(AppColors.textTabInactive, const Color(0xFFB0B0B0));
+    },
+  );
+
+  testWidgets('should_keep_regular_enlarged_labels_for_every_selection', (
+    tester,
+  ) async {
+    for (final tab in RecommendInnerTab.values) {
+      await tester.pumpWidget(_host(position: tab.index.toDouble(), tab: tab));
+      for (final code in ['recommend', 'playlist', 'all']) {
+        final text = tester.widget<Text>(
+          find.descendant(
+            of: find.byKey(Key('recommend-tab-$code')),
+            matching: find.byType(Text),
+          ),
+        );
+        expect(text.style?.fontSize, 18);
+        expect(text.style?.fontWeight, FontWeight.w400);
+      }
+      expect(tester.takeException(), isNull);
+    }
+  });
+
+  testWidgets('should_follow_page_position_without_delayed_label_animation', (
+    tester,
+  ) async {
+    await tester.pumpWidget(_host(position: 0));
+    final first = tester.getRect(
+      find.byKey(const Key('recommend-tab-recommend')),
+    );
+    final second = tester.getRect(
+      find.byKey(const Key('recommend-tab-playlist')),
+    );
+    await tester.pumpWidget(
+      _host(position: _pagePosition, tab: RecommendInnerTab.playlists),
+    );
+    expect(_scale(tester, 'recommend'), closeTo(0.965, _epsilon));
+    expect(_scale(tester, 'playlist'), closeTo(0.935, _epsilon));
+    expect(_underline(tester, 'recommend').a, closeTo(0.65, _epsilon));
+    expect(_underline(tester, 'playlist').a, closeTo(0.35, _epsilon));
+    expect(_underline(tester, 'all').a, 0);
+    expect(
+      tester.getRect(find.byKey(const Key('recommend-tab-recommend'))),
+      first,
+    );
+    expect(
+      tester.getRect(find.byKey(const Key('recommend-tab-playlist'))),
+      second,
+    );
+    await tester.pumpWidget(_host(position: 0));
+    expect(_scale(tester, 'recommend'), 1);
+    expect(_underline(tester, 'recommend'), AppColors.brandRed);
+  });
+
+  testWidgets('should_fade_both_underlines_when_used_without_page_position', (
+    tester,
+  ) async {
+    await tester.pumpWidget(_host());
+    await tester.pumpWidget(_host(tab: RecommendInnerTab.playlists));
+    await tester.pump(_duration);
+    expect(_underline(tester, 'recommend').a, inExclusiveRange(0.0, 1.0));
+    expect(_underline(tester, 'playlist').a, inExclusiveRange(0.0, 1.0));
+  });
+}