feat(app): F8 班级系统 + F9/F10 占位页面

F8 班级系统:
- ClassBloc 状态管理 (班级列表/日记墙/成员/主题/评语)
- 班级主页: 日记墙 + 主题布置 Tab + 成员列表
- 老师管理页: 创建班级 + 布置主题 + 点评入口
- 班级码展示 + 评语卡片

F9 家长功能 (占位):
- 家长中心页面框架: 日记查看/心情统计/使用时间/数据管理
- PIPL 合规提示卡片

F10 搜索/设置 (部分):
- 个人中心: 用户信息 + 角色展示 + 功能入口 + 退出登录
- 搜索页: 标签筛选 + 心情过滤 + 搜索框

验证: flutter analyze 0 error

app/lib/features/class_/bloc/class_bloc.dart

@@ -0,0 +1,410 @@
+// 班级 BLoC — 管理班级状态、成员、日记墙、主题布置和评语
+
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:nuanji_app/data/models/journal_entry.dart';
+import 'package:nuanji_app/data/models/school_class.dart';
+
+// ===== Events =====
+
+sealed class ClassEvent {
+  const ClassEvent();
+}
+
+/// 加载我的班级列表
+final class ClassLoadMyClasses extends ClassEvent {
+  const ClassLoadMyClasses();
+}
+
+/// 选择当前班级
+final class ClassSelected extends ClassEvent {
+  final String classId;
+  const ClassSelected(this.classId);
+}
+
+/// 加载班级成员列表
+final class ClassLoadMembers extends ClassEvent {
+  final String classId;
+  const ClassLoadMembers(this.classId);
+}
+
+/// 加载班级日记墙（已分享到班级的日记）
+final class ClassLoadDiaryWall extends ClassEvent {
+  final String classId;
+  const ClassLoadDiaryWall(this.classId);
+}
+
+/// 加载主题布置列表
+final class ClassLoadTopics extends ClassEvent {
+  final String classId;
+  const ClassLoadTopics(this.classId);
+}
+
+/// 创建班级（老师）
+final class ClassCreate extends ClassEvent {
+  final String name;
+  final String? schoolName;
+  const ClassCreate({required this.name, this.schoolName});
+}
+
+/// 布置主题（老师）
+final class TopicAssign extends ClassEvent {
+  final String classId;
+  final String title;
+  final String? description;
+  final DateTime? dueDate;
+  const TopicAssign({
+    required this.classId,
+    required this.title,
+    this.description,
+    this.dueDate,
+  });
+}
+
+/// 加载日记评语
+final class ClassLoadComments extends ClassEvent {
+  final String journalId;
+  const ClassLoadComments(this.journalId);
+}
+
+// ===== State =====
+
+/// 班级成员模型
+class ClassMember {
+  final String userId;
+  final String role;
+  final String? nickname;
+  final DateTime joinedAt;
+
+  const ClassMember({
+    required this.userId,
+    required this.role,
+    this.nickname,
+    required this.joinedAt,
+  });
+}
+
+/// 主题布置模型
+class TopicAssignment {
+  final String id;
+  final String classId;
+  final String teacherId;
+  final String title;
+  final String? description;
+  final DateTime? dueDate;
+  final bool isActive;
+
+  const TopicAssignment({
+    required this.id,
+    required this.classId,
+    required this.teacherId,
+    required this.title,
+    this.description,
+    this.dueDate,
+    this.isActive = true,
+  });
+}
+
+/// 评语模型
+class Comment {
+  final String id;
+  final String journalId;
+  final String authorId;
+  final String content;
+  final DateTime createdAt;
+
+  const Comment({
+    required this.id,
+    required this.journalId,
+    required this.authorId,
+    required this.content,
+    required this.createdAt,
+  });
+}
+
+/// 班级状态
+sealed class ClassState {
+  const ClassState();
+}
+
+/// 初始状态
+final class ClassInitial extends ClassState {
+  const ClassInitial();
+}
+
+/// 加载中
+final class ClassLoading extends ClassState {
+  const ClassLoading();
+}
+
+/// 班级列表已加载
+final class ClassListLoaded extends ClassState {
+  final List<SchoolClass> classes;
+  final bool isLoading;
+
+  const ClassListLoaded({
+    this.classes = const [],
+    this.isLoading = false,
+  });
+
+  ClassListLoaded copyWith({
+    List<SchoolClass>? classes,
+    bool? isLoading,
+  }) =>
+      ClassListLoaded(
+        classes: classes ?? this.classes,
+        isLoading: isLoading ?? this.isLoading,
+      );
+}
+
+/// 班级详情已加载（日记墙 / 成员 / 主题 / 评语）
+final class ClassDetailLoaded extends ClassState {
+  final SchoolClass classInfo;
+  final List<ClassMember> members;
+  final List<JournalEntry> diaryWall;
+  final List<TopicAssignment> topics;
+  final List<Comment> comments;
+  final bool isLoadingWall;
+  final bool isLoadingMembers;
+  final String? selectedJournalId;
+
+  const ClassDetailLoaded({
+    required this.classInfo,
+    this.members = const [],
+    this.diaryWall = const [],
+    this.topics = const [],
+    this.comments = const [],
+    this.isLoadingWall = false,
+    this.isLoadingMembers = false,
+    this.selectedJournalId,
+  });
+
+  ClassDetailLoaded copyWith({
+    SchoolClass? classInfo,
+    List<ClassMember>? members,
+    List<JournalEntry>? diaryWall,
+    List<TopicAssignment>? topics,
+    List<Comment>? comments,
+    bool? isLoadingWall,
+    bool? isLoadingMembers,
+    String? selectedJournalId,
+    bool clearSelectedJournal = false,
+  }) =>
+      ClassDetailLoaded(
+        classInfo: classInfo ?? this.classInfo,
+        members: members ?? this.members,
+        diaryWall: diaryWall ?? this.diaryWall,
+        topics: topics ?? this.topics,
+        comments: comments ?? this.comments,
+        isLoadingWall: isLoadingWall ?? this.isLoadingWall,
+        isLoadingMembers: isLoadingMembers ?? this.isLoadingMembers,
+        selectedJournalId: clearSelectedJournal
+            ? null
+            : (selectedJournalId ?? this.selectedJournalId),
+      );
+}
+
+/// 错误状态
+final class ClassError extends ClassState {
+  final String message;
+  const ClassError(this.message);
+}
+
+// ===== BLoC =====
+
+class ClassBloc extends Bloc<ClassEvent, ClassState> {
+  ClassBloc() : super(const ClassInitial()) {
+    on<ClassLoadMyClasses>(_onLoadMyClasses);
+    on<ClassSelected>(_onClassSelected);
+    on<ClassLoadMembers>(_onLoadMembers);
+    on<ClassLoadDiaryWall>(_onLoadDiaryWall);
+    on<ClassLoadTopics>(_onLoadTopics);
+    on<ClassCreate>(_onCreateClass);
+    on<TopicAssign>(_onTopicAssign);
+    on<ClassLoadComments>(_onLoadComments);
+  }
+
+  Future<void> _onLoadMyClasses(
+    ClassLoadMyClasses event,
+    Emitter<ClassState> emit,
+  ) async {
+    emit(const ClassListLoaded(isLoading: true));
+
+    // Phase 1: 占位数据，待 API 集成
+    await Future.delayed(const Duration(milliseconds: 300));
+    final now = DateTime.now();
+
+    emit(ClassListLoaded(classes: [
+      SchoolClass(
+        id: 'class-1',
+        name: '三年二班',
+        schoolName: '阳光小学',
+        teacherId: 'teacher-1',
+        classCode: 'a1b2c3',
+        memberCount: 28,
+        createdAt: now,
+        updatedAt: now,
+      ),
+    ]));
+  }
+
+  Future<void> _onClassSelected(
+    ClassSelected event,
+    Emitter<ClassState> emit,
+  ) async {
+    final now = DateTime.now();
+    final classInfo = SchoolClass(
+      id: event.classId,
+      name: '三年二班',
+      schoolName: '阳光小学',
+      teacherId: 'teacher-1',
+      classCode: 'a1b2c3',
+      memberCount: 28,
+      createdAt: now,
+      updatedAt: now,
+    );
+
+    emit(ClassDetailLoaded(classInfo: classInfo));
+
+    add(ClassLoadDiaryWall(event.classId));
+    add(ClassLoadMembers(event.classId));
+    add(ClassLoadTopics(event.classId));
+  }
+
+  Future<void> _onLoadMembers(
+    ClassLoadMembers event,
+    Emitter<ClassState> emit,
+  ) async {
+    if (state is! ClassDetailLoaded) return;
+    final current = state as ClassDetailLoaded;
+    emit(current.copyWith(isLoadingMembers: true));
+
+    await Future.delayed(const Duration(milliseconds: 200));
+    final now = DateTime.now();
+
+    final members = List.generate(
+      28,
+      (i) => ClassMember(
+        userId: 'user-$i',
+        role: i == 0 ? 'teacher' : 'student',
+        nickname: i == 0 ? '王老师' : '同学$i',
+        joinedAt: now,
+      ),
+    );
+
+    emit(current.copyWith(members: members, isLoadingMembers: false));
+  }
+
+  Future<void> _onLoadDiaryWall(
+    ClassLoadDiaryWall event,
+    Emitter<ClassState> emit,
+  ) async {
+    if (state is! ClassDetailLoaded) return;
+    final current = state as ClassDetailLoaded;
+    emit(current.copyWith(isLoadingWall: true));
+
+    await Future.delayed(const Duration(milliseconds: 200));
+    final now = DateTime.now();
+    final titles = ['快乐的周末', '春天来了', '我的小猫', '数学课', '好朋友', '下雨天'];
+
+    final diaries = List.generate(
+      6,
+      (i) => JournalEntry(
+        id: 'diary-$i',
+        authorId: 'user-${i + 1}',
+        classId: event.classId,
+        title: titles[i],
+        date: now.subtract(Duration(days: i)),
+        mood: Mood.values[i % Mood.values.length],
+        tags: const ['日常', '心情'],
+        createdAt: now,
+        updatedAt: now,
+      ),
+    );
+
+    emit(current.copyWith(diaryWall: diaries, isLoadingWall: false));
+  }
+
+  Future<void> _onLoadTopics(
+    ClassLoadTopics event,
+    Emitter<ClassState> emit,
+  ) async {
+    if (state is! ClassDetailLoaded) return;
+    final current = state as ClassDetailLoaded;
+
+    final topics = [
+      TopicAssignment(
+        id: 'topic-1',
+        classId: event.classId,
+        teacherId: 'teacher-1',
+        title: '我的周末',
+        description: '写一篇关于你周末生活的日记',
+        dueDate: DateTime.now().add(const Duration(days: 3)),
+      ),
+      TopicAssignment(
+        id: 'topic-2',
+        classId: event.classId,
+        teacherId: 'teacher-1',
+        title: '最开心的一天',
+        description: '回忆一下让你最开心的一天',
+      ),
+    ];
+
+    emit(current.copyWith(topics: topics));
+  }
+
+  Future<void> _onCreateClass(
+    ClassCreate event,
+    Emitter<ClassState> emit,
+  ) async {
+    final newClass = SchoolClass.create(
+      name: event.name,
+      schoolName: event.schoolName ?? '',
+      teacherId: 'current-user',
+      classCode: 'x1y2z3',
+    );
+
+    if (state is ClassListLoaded) {
+      final current = state as ClassListLoaded;
+      emit(current.copyWith(classes: [...current.classes, newClass]));
+    }
+  }
+
+  Future<void> _onTopicAssign(
+    TopicAssign event,
+    Emitter<ClassState> emit,
+  ) async {
+    if (state is! ClassDetailLoaded) return;
+    final current = state as ClassDetailLoaded;
+    final newTopic = TopicAssignment(
+      id: 'topic-${DateTime.now().millisecondsSinceEpoch}',
+      classId: event.classId,
+      teacherId: 'current-user',
+      title: event.title,
+      description: event.description,
+      dueDate: event.dueDate,
+    );
+    emit(current.copyWith(topics: [newTopic, ...current.topics]));
+  }
+
+  Future<void> _onLoadComments(
+    ClassLoadComments event,
+    Emitter<ClassState> emit,
+  ) async {
+    if (state is! ClassDetailLoaded) return;
+    final current = state as ClassDetailLoaded;
+
+    final comments = [
+      Comment(
+        id: 'comment-1',
+        journalId: event.journalId,
+        authorId: 'teacher-1',
+        content: '写得很好，继续保持！',
+        createdAt: DateTime.now(),
+      ),
+    ];
+    emit(current.copyWith(
+      comments: comments,
+      selectedJournalId: event.journalId,
+    ));
+  }
+}

app/lib/features/class_/views/class_page.dart

@@ -1,14 +1,516 @@
-import 'package:flutter/material.dart';
+// 班级主页 — 日记墙 + 班级信息 + 成员 + 主题
 
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:go_router/go_router.dart';
+import 'package:nuanji_app/core/theme/app_colors.dart';
+import 'package:nuanji_app/data/models/journal_entry.dart';
+import 'package:nuanji_app/data/models/school_class.dart';
+import '../bloc/class_bloc.dart';
+
+/// 班级主页 — 日记墙 + 班级信息
 class ClassPage extends StatelessWidget {
   const ClassPage({super.key});
 
   @override
   Widget build(BuildContext context) {
-    return const Scaffold(
+    return BlocProvider(
-      body: Center(
+      create: (context) => ClassBloc()..add(const ClassLoadMyClasses()),
-        child: Text('班级 - 占位页面'),
+      child: const _ClassView(),
+    );
+  }
+}
+
+class _ClassView extends StatelessWidget {
+  const _ClassView();
+
+  @override
+  Widget build(BuildContext context) {
+    return BlocBuilder<ClassBloc, ClassState>(
+      builder: (context, state) {
+        if (state is ClassLoading || state is ClassInitial) {
+          return Scaffold(
+            appBar: AppBar(title: const Text('班级')),
+            body: Center(child: CircularProgressIndicator()),
+          );
+        }
+
+        if (state is ClassError) {
+          return Scaffold(
+            appBar: AppBar(title: const Text('班级')),
+            body: Center(child: Text(state.message)),
+          );
+        }
+
+        if (state is ClassListLoaded) {
+          return _ClassListView(classes: state.classes, colorScheme: Theme.of(context).colorScheme);
+        }
+
+        if (state is ClassDetailLoaded) {
+          return _ClassDetailView(state: state);
+        }
+
+        return const SizedBox.shrink();
+      },
+    );
+  }
+}
+
+// ===== 班级列表视图 =====
+
+class _ClassListView extends StatelessWidget {
+  const _ClassListView({required this.classes, required this.colorScheme});
+
+  final List<SchoolClass> classes;
+  final ColorScheme colorScheme;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: const Text('我的班级')),
+      body: classes.isEmpty
+          ? _buildEmptyState(context, colorScheme)
+          : ListView(
+              padding: const EdgeInsets.all(16),
+              children: classes.map((cls) {
+                return _ClassListCard(
+                  cls: cls,
+                  colorScheme: colorScheme,
+                  onTap: () =>
+                      context.read<ClassBloc>().add(ClassSelected(cls.id)),
+                );
+              }).toList(),
+            ),
+    );
+  }
+
+  Widget _buildEmptyState(BuildContext context, ColorScheme colorScheme) {
+    return Center(
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Icon(Icons.groups_outlined, size: 64, color: colorScheme.onSurface.withValues(alpha: 0.2)),
+          const SizedBox(height: 16),
+          Text('还没有加入任何班级', style: Theme.of(context).textTheme.bodyLarge?.copyWith(
+            color: colorScheme.onSurface.withValues(alpha: 0.5),
+          )),
+          const SizedBox(height: 24),
+          FilledButton.tonal(
+            onPressed: () => context.go('/class-code'),
+            child: const Text('输入班级码加入'),
+          ),
+        ],
       ),
     );
   }
 }
+
+class _ClassListCard extends StatelessWidget {
+  const _ClassListCard({
+    required this.cls,
+    required this.colorScheme,
+    required this.onTap,
+  });
+
+  final SchoolClass cls;
+  final ColorScheme colorScheme;
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+
+    return Card(
+      margin: const EdgeInsets.only(bottom: 12),
+      elevation: 0,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(16),
+        side: BorderSide(color: colorScheme.outlineVariant),
+      ),
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(16),
+        child: Padding(
+          padding: const EdgeInsets.all(16),
+          child: Row(
+            children: [
+              Container(
+                width: 48,
+                height: 48,
+                decoration: BoxDecoration(
+                  color: AppColors.secondary.withValues(alpha: 0.15),
+                  borderRadius: BorderRadius.circular(12),
+                ),
+                alignment: Alignment.center,
+                child: const Icon(Icons.school_rounded, color: AppColors.secondary),
+              ),
+              const SizedBox(width: 16),
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(cls.name, style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w600)),
+                    const SizedBox(height: 4),
+                    Text(
+                      '${cls.schoolName} · ${cls.memberCount} 人',
+                      style: theme.textTheme.bodySmall?.copyWith(
+                        color: colorScheme.onSurface.withValues(alpha: 0.5),
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+              const Icon(Icons.chevron_right),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+// ===== 班级详情视图（日记墙）=====
+
+class _ClassDetailView extends StatelessWidget {
+  const _ClassDetailView({required this.state});
+
+  final ClassDetailLoaded state;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
+    final classInfo = state.classInfo;
+
+    return DefaultTabController(
+      length: 3,
+      child: Scaffold(
+        appBar: AppBar(
+          leading: IconButton(
+            onPressed: () => context.read<ClassBloc>().add(const ClassLoadMyClasses()),
+            icon: const Icon(Icons.arrow_back),
+          ),
+          title: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Text(classInfo.name),
+              Text(
+                '${classInfo.schoolName} · 班级码: ${classInfo.classCode}',
+                style: theme.textTheme.labelSmall?.copyWith(
+                  color: colorScheme.onSurface.withValues(alpha: 0.5),
+                ),
+              ),
+            ],
+          ),
+          bottom: const TabBar(
+            tabs: [
+              Tab(text: '日记墙'),
+              Tab(text: '主题'),
+              Tab(text: '成员'),
+            ],
+          ),
+        ),
+        body: TabBarView(
+          children: [
+            // 日记墙
+            _DiaryWallTab(state: state),
+            // 主题布置
+            _TopicsTab(topics: state.topics),
+            // 成员列表
+            _MembersTab(state: state),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+// ===== 日记墙 Tab =====
+
+class _DiaryWallTab extends StatelessWidget {
+  const _DiaryWallTab({required this.state});
+
+  final ClassDetailLoaded state;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
+
+    if (state.isLoadingWall) {
+      return const Center(child: CircularProgressIndicator());
+    }
+
+    if (state.diaryWall.isEmpty) {
+      return Center(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            Icon(Icons.auto_stories_outlined, size: 48, color: colorScheme.onSurface.withValues(alpha: 0.2)),
+            const SizedBox(height: 12),
+            Text('日记墙还是空的', style: theme.textTheme.bodyLarge?.copyWith(
+              color: colorScheme.onSurface.withValues(alpha: 0.5),
+            )),
+            const SizedBox(height: 8),
+            Text('分享你的日记到班级吧！', style: theme.textTheme.bodySmall?.copyWith(
+              color: colorScheme.onSurface.withValues(alpha: 0.3),
+            )),
+          ],
+        ),
+      );
+    }
+
+    return ListView.builder(
+      padding: const EdgeInsets.all(16),
+      itemCount: state.diaryWall.length,
+      itemBuilder: (context, index) {
+        final journal = state.diaryWall[index];
+        return _DiaryWallCard(journal: journal, comments: state.comments);
+      },
+    );
+  }
+}
+
+class _DiaryWallCard extends StatelessWidget {
+  const _DiaryWallCard({required this.journal, required this.comments});
+
+  final JournalEntry journal;
+  final List<Comment> comments;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
+    final moodColor = AppColors.moodColors[journal.mood.value] ?? colorScheme.primary;
+
+    return Card(
+      margin: const EdgeInsets.only(bottom: 12),
+      elevation: 0,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(16),
+        side: BorderSide(color: colorScheme.outlineVariant),
+      ),
+      child: InkWell(
+        onTap: () => context.go('/editor?id=${journal.id}'),
+        borderRadius: BorderRadius.circular(16),
+        child: Padding(
+          padding: const EdgeInsets.all(16),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              // 头部：作者 + 心情
+              Row(
+                children: [
+                  CircleAvatar(
+                    radius: 16,
+                    backgroundColor: AppColors.rose.withValues(alpha: 0.2),
+                    child: Text(
+                      '同',
+                      style: theme.textTheme.labelMedium?.copyWith(color: AppColors.rose),
+                    ),
+                  ),
+                  const SizedBox(width: 8),
+                  Expanded(
+                    child: Text(
+                      journal.title,
+                      style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w600),
+                    ),
+                  ),
+                  Container(
+                    width: 28,
+                    height: 28,
+                    decoration: BoxDecoration(
+                      shape: BoxShape.circle,
+                      color: moodColor.withValues(alpha: 0.15),
+                    ),
+                    alignment: Alignment.center,
+                    child: Text(_moodEmoji(journal.mood), style: const TextStyle(fontSize: 14)),
+                  ),
+                ],
+              ),
+              const SizedBox(height: 8),
+              // 日期
+              Text(
+                '${journal.date.month}月${journal.date.day}日',
+                style: theme.textTheme.bodySmall?.copyWith(
+                  color: colorScheme.onSurface.withValues(alpha: 0.4),
+                ),
+              ),
+              // 评语
+              if (comments.isNotEmpty) ...[
+                const SizedBox(height: 8),
+                Container(
+                  padding: const EdgeInsets.all(8),
+                  decoration: BoxDecoration(
+                    color: colorScheme.primaryContainer.withValues(alpha: 0.3),
+                    borderRadius: BorderRadius.circular(8),
+                  ),
+                  child: Row(
+                    children: [
+                      const Icon(Icons.rate_review_rounded, size: 14),
+                      const SizedBox(width: 4),
+                      Expanded(
+                        child: Text(
+                          comments.first.content,
+                          style: theme.textTheme.bodySmall,
+                          maxLines: 2,
+                          overflow: TextOverflow.ellipsis,
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ],
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  String _moodEmoji(Mood mood) => switch (mood) {
+        Mood.happy => '😊',
+        Mood.calm => '😌',
+        Mood.sad => '😢',
+        Mood.angry => '😠',
+        Mood.thinking => '🤔',
+      };
+}
+
+// ===== 主题 Tab =====
+
+class _TopicsTab extends StatelessWidget {
+  const _TopicsTab({required this.topics});
+
+  final List<TopicAssignment> topics;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
+
+    if (topics.isEmpty) {
+      return Center(
+        child: Text('暂无主题布置', style: theme.textTheme.bodyLarge?.copyWith(
+          color: colorScheme.onSurface.withValues(alpha: 0.5),
+        )),
+      );
+    }
+
+    return ListView.builder(
+      padding: const EdgeInsets.all(16),
+      itemCount: topics.length,
+      itemBuilder: (context, index) {
+        final topic = topics[index];
+        final isOverdue = topic.dueDate != null && topic.dueDate!.isBefore(DateTime.now());
+
+        return Card(
+          margin: const EdgeInsets.only(bottom: 12),
+          elevation: 0,
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(16),
+            side: BorderSide(color: colorScheme.outlineVariant),
+          ),
+          child: InkWell(
+            onTap: () => context.go('/editor?topic=${topic.id}'),
+            borderRadius: BorderRadius.circular(16),
+            child: Padding(
+              padding: const EdgeInsets.all(16),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Row(
+                    children: [
+                      const Icon(Icons.assignment_outlined, size: 20),
+                      const SizedBox(width: 8),
+                      Expanded(
+                        child: Text(
+                          topic.title,
+                          style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w600),
+                        ),
+                      ),
+                      if (topic.isActive && !isOverdue)
+                        Container(
+                          padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
+                          decoration: BoxDecoration(
+                            color: AppColors.secondary.withValues(alpha: 0.15),
+                            borderRadius: BorderRadius.circular(6),
+                          ),
+                          child: Text('进行中', style: theme.textTheme.labelSmall?.copyWith(color: AppColors.secondary)),
+                        ),
+                    ],
+                  ),
+                  if (topic.description != null) ...[
+                    const SizedBox(height: 8),
+                    Text(topic.description!, style: theme.textTheme.bodyMedium),
+                  ],
+                  if (topic.dueDate != null) ...[
+                    const SizedBox(height: 8),
+                    Text(
+                      '截止: ${topic.dueDate!.month}月${topic.dueDate!.day}日',
+                      style: theme.textTheme.bodySmall?.copyWith(
+                        color: isOverdue ? colorScheme.error : colorScheme.onSurface.withValues(alpha: 0.5),
+                      ),
+                    ),
+                  ],
+                ],
+              ),
+            ),
+          ),
+        );
+      },
+    );
+  }
+}
+
+// ===== 成员 Tab =====
+
+class _MembersTab extends StatelessWidget {
+  const _MembersTab({required this.state});
+
+  final ClassDetailLoaded state;
+
+  @override
+  Widget build(BuildContext context) {
+    if (state.isLoadingMembers) {
+      return const Center(child: CircularProgressIndicator());
+    }
+
+    final theme = Theme.of(context);
+
+    return ListView.builder(
+      padding: const EdgeInsets.all(16),
+      itemCount: state.members.length,
+      itemBuilder: (context, index) {
+        final member = state.members[index];
+        final isTeacher = member.role == 'teacher';
+
+        return ListTile(
+          leading: CircleAvatar(
+            backgroundColor: isTeacher
+                ? AppColors.accent.withValues(alpha: 0.15)
+                : AppColors.secondary.withValues(alpha: 0.15),
+            child: Text(
+              (member.nickname ?? '?').characters.first,
+              style: TextStyle(
+                color: isTeacher ? AppColors.accent : AppColors.secondary,
+                fontWeight: FontWeight.bold,
+              ),
+            ),
+          ),
+          title: Text(member.nickname ?? '未知'),
+          trailing: isTeacher
+              ? Container(
+                  padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
+                  decoration: BoxDecoration(
+                    color: AppColors.accent.withValues(alpha: 0.1),
+                    borderRadius: BorderRadius.circular(6),
+                  ),
+                  child: Text('老师', style: theme.textTheme.labelSmall?.copyWith(color: AppColors.accent)),
+                )
+              : null,
+        );
+      },
+    );
+  }
+}

app/lib/features/parent/views/parent_page.dart

@@ -1,13 +1,187 @@
-import 'package:flutter/material.dart';
+// 家长页面 — 只读查看 + 孩子数据管理
 
+import 'package:flutter/material.dart';
+import 'package:nuanji_app/core/theme/app_colors.dart';
+
+/// 家长中心页面 — 家长查看孩子日记和统计
 class ParentPage extends StatelessWidget {
   const ParentPage({super.key});
 
   @override
   Widget build(BuildContext context) {
-    return const Scaffold(
+    final theme = Theme.of(context);
-      body: Center(
+    final colorScheme = theme.colorScheme;
-        child: Text('家长 - 占位页面'),
+
+    return Scaffold(
+      appBar: AppBar(title: const Text('家长中心')),
+      body: SingleChildScrollView(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            // 孩子信息卡片
+            Card(
+              elevation: 0,
+              shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(22)),
+              color: colorScheme.primaryContainer,
+              child: Padding(
+                padding: const EdgeInsets.all(20),
+                child: Row(
+                  children: [
+                    CircleAvatar(
+                      radius: 28,
+                      backgroundColor: AppColors.rose.withValues(alpha: 0.2),
+                      child: const Text('👶', style: TextStyle(fontSize: 24)),
+                    ),
+                    const SizedBox(width: 16),
+                    Expanded(
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [
+                          Text('孩子的日记', style: theme.textTheme.titleMedium?.copyWith(fontWeight: FontWeight.bold)),
+                          const SizedBox(height: 4),
+                          Text('查看和管理孩子的日记数据', style: theme.textTheme.bodySmall?.copyWith(
+                            color: colorScheme.onSurface.withValues(alpha: 0.6),
+                          )),
+                        ],
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ),
+            const SizedBox(height: 20),
+
+            // 功能列表
+            _ParentActionCard(
+              icon: Icons.auto_stories_outlined,
+              iconColor: AppColors.accent,
+              title: '日记查看',
+              subtitle: '只读查看孩子的日记和评语',
+              onTap: () => ScaffoldMessenger.of(context).showSnackBar(
+                const SnackBar(content: Text('F9: 家长日记查看待实现')),
+              ),
+            ),
+            const SizedBox(height: 12),
+            _ParentActionCard(
+              icon: Icons.bar_chart_outlined,
+              iconColor: AppColors.secondary,
+              title: '心情统计',
+              subtitle: '查看孩子的写作频率和心情趋势',
+              onTap: () => ScaffoldMessenger.of(context).showSnackBar(
+                const SnackBar(content: Text('F9: 心情统计待实现')),
+              ),
+            ),
+            const SizedBox(height: 12),
+            _ParentActionCard(
+              icon: Icons.timer_outlined,
+              iconColor: AppColors.tertiary,
+              title: '使用时间',
+              subtitle: '设置孩子每天的使用时间限制',
+              onTap: () => ScaffoldMessenger.of(context).showSnackBar(
+                const SnackBar(content: Text('F9: 使用时间限制待实现')),
+              ),
+            ),
+            const SizedBox(height: 12),
+            _ParentActionCard(
+              icon: Icons.download_outlined,
+              iconColor: colorScheme.primary,
+              title: '数据管理',
+              subtitle: '导出或删除孩子的日记数据',
+              onTap: () => ScaffoldMessenger.of(context).showSnackBar(
+                const SnackBar(content: Text('F9: 数据管理待实现')),
+              ),
+            ),
+            const SizedBox(height: 24),
+
+            // PIPL 提示
+            Container(
+              padding: const EdgeInsets.all(12),
+              decoration: BoxDecoration(
+                color: colorScheme.surfaceContainerHighest,
+                borderRadius: BorderRadius.circular(12),
+              ),
+              child: Row(
+                children: [
+                  Icon(Icons.shield_outlined, size: 18, color: colorScheme.onSurface.withValues(alpha: 0.5)),
+                  const SizedBox(width: 8),
+                  Expanded(
+                    child: Text(
+                      '根据《个人信息保护法》，您有权查阅、更正、删除和导出孩子的数据。',
+                      style: theme.textTheme.bodySmall?.copyWith(
+                        color: colorScheme.onSurface.withValues(alpha: 0.5),
+                      ),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class _ParentActionCard extends StatelessWidget {
+  const _ParentActionCard({
+    required this.icon,
+    required this.iconColor,
+    required this.title,
+    required this.subtitle,
+    required this.onTap,
+  });
+
+  final IconData icon;
+  final Color iconColor;
+  final String title;
+  final String subtitle;
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
+
+    return Card(
+      elevation: 0,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(16),
+        side: BorderSide(color: colorScheme.outlineVariant),
+      ),
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(16),
+        child: Padding(
+          padding: const EdgeInsets.all(16),
+          child: Row(
+            children: [
+              Container(
+                width: 44,
+                height: 44,
+                decoration: BoxDecoration(
+                  color: iconColor.withValues(alpha: 0.12),
+                  borderRadius: BorderRadius.circular(12),
+                ),
+                child: Icon(icon, color: iconColor, size: 22),
+              ),
+              const SizedBox(width: 16),
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(title, style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w600)),
+                    const SizedBox(height: 2),
+                    Text(subtitle, style: theme.textTheme.bodySmall?.copyWith(
+                      color: colorScheme.onSurface.withValues(alpha: 0.5),
+                    )),
+                  ],
+                ),
+              ),
+              Icon(Icons.chevron_right, color: colorScheme.onSurface.withValues(alpha: 0.3)),
+            ],
+          ),
+        ),
       ),
     );
   }

app/lib/features/profile/views/profile_page.dart

@@ -1,14 +1,175 @@
-import 'package:flutter/material.dart';
+// 个人中心页面 — 用户信息 + 功能入口 + 设置
 
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:go_router/go_router.dart';
+import 'package:nuanji_app/core/theme/app_colors.dart';
+import 'package:nuanji_app/features/auth/bloc/auth_bloc.dart';
+
+/// 个人中心页面
 class ProfilePage extends StatelessWidget {
   const ProfilePage({super.key});
 
   @override
   Widget build(BuildContext context) {
-    return const Scaffold(
+    final theme = Theme.of(context);
-      body: Center(
+    final colorScheme = theme.colorScheme;
-        child: Text('我的 - 占位页面'),
+    final authState = context.watch<AuthBloc>().state;
+    final displayName = authState is Authenticated ? authState.user.displayLabel : '用户';
+    final role = authState is Authenticated ? authState.user.primaryRoleType : null;
+
+    return SingleChildScrollView(
+      padding: const EdgeInsets.all(16),
+      child: Column(
+        children: [
+          // 用户头像卡片
+          Card(
+            elevation: 0,
+            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(22)),
+            color: colorScheme.primaryContainer,
+            child: Padding(
+              padding: const EdgeInsets.all(24),
+              child: Row(
+                children: [
+                  CircleAvatar(
+                    radius: 32,
+                    backgroundColor: colorScheme.primary.withValues(alpha: 0.2),
+                    child: Text(
+                      displayName.characters.first,
+                      style: theme.textTheme.headlineSmall?.copyWith(color: colorScheme.primary),
+                    ),
+                  ),
+                  const SizedBox(width: 16),
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(displayName, style: theme.textTheme.titleMedium?.copyWith(fontWeight: FontWeight.bold)),
+                        const SizedBox(height: 4),
+                        Text(
+                          _roleLabel(role),
+                          style: theme.textTheme.bodySmall?.copyWith(
+                            color: colorScheme.onSurface.withValues(alpha: 0.6),
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+          const SizedBox(height: 20),
+
+          // 功能入口
+          _ProfileMenuItem(
+            icon: Icons.auto_awesome_outlined,
+            iconColor: AppColors.accent,
+            title: '我的成就',
+            onTap: () => context.go('/achievements'),
+          ),
+          _ProfileMenuItem(
+            icon: Icons.emoji_emotions_outlined,
+            iconColor: AppColors.secondary,
+            title: '贴纸收藏',
+            onTap: () => context.go('/stickers'),
+          ),
+          _ProfileMenuItem(
+            icon: Icons.dashboard_customize_outlined,
+            iconColor: AppColors.tertiary,
+            title: '日记模板',
+            onTap: () => context.go('/templates'),
+          ),
+          _ProfileMenuItem(
+            icon: Icons.groups_outlined,
+            iconColor: colorScheme.primary,
+            title: '我的班级',
+            onTap: () => context.go('/class'),
+          ),
+          if (role != null && role.name == 'teacher')
+            _ProfileMenuItem(
+              icon: Icons.school_outlined,
+              iconColor: AppColors.accent,
+              title: '教师管理',
+              onTap: () => context.go('/teacher'),
+            ),
+          if (role != null && role.name == 'parent')
+            _ProfileMenuItem(
+              icon: Icons.family_restroom_outlined,
+              iconColor: AppColors.rose,
+              title: '家长中心',
+              onTap: () => context.go('/parent'),
+            ),
+          const Divider(height: 32),
+          _ProfileMenuItem(
+            icon: Icons.bar_chart_outlined,
+            iconColor: colorScheme.primary,
+            title: '心情统计',
+            onTap: () => context.go('/mood'),
+          ),
+          _ProfileMenuItem(
+            icon: Icons.settings_outlined,
+            iconColor: colorScheme.onSurface.withValues(alpha: 0.5),
+            title: '设置',
+            onTap: () {
+              ScaffoldMessenger.of(context).showSnackBar(
+                const SnackBar(content: Text('设置页面开发中')),
+              );
+            },
+          ),
+          const SizedBox(height: 16),
+
+          // 退出登录
+          SizedBox(
+            width: double.infinity,
+            child: OutlinedButton(
+              onPressed: () {
+                context.read<AuthBloc>().add(const LogoutRequested());
+                context.go('/login');
+              },
+              style: OutlinedButton.styleFrom(foregroundColor: colorScheme.error),
+              child: const Text('退出登录'),
+            ),
+          ),
+        ],
       ),
     );
   }
+
+  String _roleLabel(dynamic role) {
+    if (role == null) return '未选择角色';
+    return switch (role.name) {
+      'teacher' => '老师',
+      'student' => '学生',
+      'parent' => '家长',
+      'independent' => '独立用户',
+      _ => '用户',
+    };
+  }
+}
+
+class _ProfileMenuItem extends StatelessWidget {
+  const _ProfileMenuItem({
+    required this.icon,
+    required this.iconColor,
+    required this.title,
+    required this.onTap,
+  });
+
+  final IconData icon;
+  final Color iconColor;
+  final String title;
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    return ListTile(
+      leading: Icon(icon, color: iconColor),
+      title: Text(title, style: theme.textTheme.bodyMedium),
+      trailing: const Icon(Icons.chevron_right, size: 20),
+      onTap: onTap,
+      contentPadding: const EdgeInsets.symmetric(horizontal: 4),
+    );
+  }
 }

app/lib/features/search/views/search_page.dart

@@ -1,14 +1,160 @@
-import 'package:flutter/material.dart';
+// 搜索页面 — 日记搜索 + 标签筛选
 
-class SearchPage extends StatelessWidget {
+import 'package:flutter/material.dart';
+import 'package:nuanji_app/core/theme/app_colors.dart';
+import 'package:nuanji_app/data/models/journal_entry.dart';
+
+/// 搜索页面 — 全文搜索日记（Phase 1 占位 UI）
+class SearchPage extends StatefulWidget {
   const SearchPage({super.key});
 
+  @override
+  State<SearchPage> createState() => _SearchPageState();
+}
+
+class _SearchPageState extends State<SearchPage> {
+  final _searchController = TextEditingController();
+  bool _hasSearched = false;
+
+  // Phase 1 占位数据
+  final _recentTags = ['日常', '学校', '旅行', '美食', '读书', '心情'];
+  final _moodFilters = Mood.values;
+
+  @override
+  void dispose() {
+    _searchController.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
-    return const Scaffold(
+    final theme = Theme.of(context);
-      body: Center(
+    final colorScheme = theme.colorScheme;
-        child: Text('搜索 - 占位页面'),
+
+    return Scaffold(
+      appBar: AppBar(
+        title: TextField(
+          controller: _searchController,
+          decoration: InputDecoration(
+            hintText: '搜索日记...',
+            hintStyle: theme.textTheme.bodyLarge?.copyWith(
+              color: colorScheme.onSurface.withValues(alpha: 0.4),
+            ),
+            border: InputBorder.none,
+            prefixIcon: const Icon(Icons.search),
+            suffixIcon: _searchController.text.isNotEmpty
+                ? IconButton(
+                    icon: const Icon(Icons.clear),
+                    onPressed: () {
+                      _searchController.clear();
+                      setState(() => _hasSearched = false);
+                    },
+                  )
+                : null,
+          ),
+          textInputAction: TextInputAction.search,
+          onSubmitted: (_) => _doSearch(),
+        ),
+      ),
+      body: _hasSearched
+          ? _buildSearchResults(context, colorScheme)
+          : _buildSuggestions(context, theme, colorScheme),
+    );
+  }
+
+  void _doSearch() {
+    setState(() => _hasSearched = true);
+  }
+
+  Widget _buildSuggestions(BuildContext context, ThemeData theme, ColorScheme colorScheme) {
+    return SingleChildScrollView(
+      padding: const EdgeInsets.all(16),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text('常用标签', style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w600)),
+          const SizedBox(height: 8),
+          Wrap(
+            spacing: 8,
+            runSpacing: 8,
+            children: _recentTags.map((tag) {
+              return ActionChip(
+                label: Text(tag),
+                onPressed: () {
+                  _searchController.text = tag;
+                  _doSearch();
+                },
+              );
+            }).toList(),
+          ),
+          const SizedBox(height: 24),
+          Text('按心情筛选', style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w600)),
+          const SizedBox(height: 12),
+          Wrap(
+            spacing: 12,
+            runSpacing: 12,
+            children: _moodFilters.map((mood) {
+              final color = AppColors.moodColors[mood.value] ?? colorScheme.primary;
+              return GestureDetector(
+                onTap: () {
+                  _searchController.text = _moodLabel(mood);
+                  _doSearch();
+                },
+                child: Column(
+                  children: [
+                    Container(
+                      width: 48,
+                      height: 48,
+                      decoration: BoxDecoration(
+                        shape: BoxShape.circle,
+                        color: color.withValues(alpha: 0.15),
+                      ),
+                      alignment: Alignment.center,
+                      child: Text(_moodEmoji(mood), style: const TextStyle(fontSize: 24)),
+                    ),
+                    const SizedBox(height: 4),
+                    Text(_moodLabel(mood), style: theme.textTheme.labelSmall),
+                  ],
+                ),
+              );
+            }).toList(),
+          ),
+        ],
       ),
     );
   }
+
+  Widget _buildSearchResults(BuildContext context, ColorScheme colorScheme) {
+    return Center(
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Icon(Icons.search_off_rounded, size: 48, color: colorScheme.onSurface.withValues(alpha: 0.2)),
+          const SizedBox(height: 12),
+          Text(
+            'Phase 1: 搜索功能待 Isar FTS 集成',
+            style: Theme.of(context).textTheme.bodyMedium?.copyWith(
+              color: colorScheme.onSurface.withValues(alpha: 0.5),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  String _moodEmoji(Mood mood) => switch (mood) {
+        Mood.happy => '😊',
+        Mood.calm => '😌',
+        Mood.sad => '😢',
+        Mood.angry => '😠',
+        Mood.thinking => '🤔',
+      };
+
+  String _moodLabel(Mood mood) => switch (mood) {
+        Mood.happy => '开心',
+        Mood.calm => '平静',
+        Mood.sad => '难过',
+        Mood.angry => '生气',
+        Mood.thinking => '思考',
+      };
 }

app/lib/features/teacher/views/teacher_page.dart

@@ -1,13 +1,277 @@
-import 'package:flutter/material.dart';
+// 老师管理页面 — 创建班级 + 布置主题 + 点评日记
 
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:go_router/go_router.dart';
+import 'package:nuanji_app/core/theme/app_colors.dart';
+import '../../class_/bloc/class_bloc.dart';
+
+/// 老师管理页面 — 教师专属功能入口
 class TeacherPage extends StatelessWidget {
   const TeacherPage({super.key});
 
   @override
   Widget build(BuildContext context) {
-    return const Scaffold(
+    return BlocProvider(
-      body: Center(
+      create: (context) => ClassBloc()..add(const ClassLoadMyClasses()),
-        child: Text('教师 - 占位页面'),
+      child: const _TeacherView(),
+    );
+  }
+}
+
+class _TeacherView extends StatelessWidget {
+  const _TeacherView();
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
+
+    return Scaffold(
+      appBar: AppBar(title: const Text('教师管理')),
+      body: SingleChildScrollView(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            // 创建班级卡片
+            _ActionCard(
+              icon: Icons.add_circle_outline,
+              iconColor: AppColors.accent,
+              title: '创建班级',
+              subtitle: '创建新班级并邀请学生加入',
+              onTap: () => _showCreateClassDialog(context),
+            ),
+            const SizedBox(height: 12),
+
+            // 布置主题卡片
+            _ActionCard(
+              icon: Icons.assignment_outlined,
+              iconColor: AppColors.secondary,
+              title: '布置主题',
+              subtitle: '给班级布置日记写作主题',
+              onTap: () => _showAssignTopicDialog(context),
+            ),
+            const SizedBox(height: 12),
+
+            // 班级码管理
+            _ActionCard(
+              icon: Icons.qr_code,
+              iconColor: AppColors.tertiary,
+              title: '班级码管理',
+              subtitle: '查看和重置班级码',
+              onTap: () {
+                ScaffoldMessenger.of(context).showSnackBar(
+                  const SnackBar(content: Text('班级码: a1b2c3')),
+                );
+              },
+            ),
+            const SizedBox(height: 24),
+
+            // 最近点评
+            Text(
+              '快捷功能',
+              style: theme.textTheme.titleMedium?.copyWith(fontWeight: FontWeight.bold),
+            ),
+            const SizedBox(height: 12),
+            _ActionCard(
+              icon: Icons.rate_review_outlined,
+              iconColor: AppColors.rose,
+              title: '点评日记',
+              subtitle: '查看学生日记并点评',
+              onTap: () => context.go('/class'),
+            ),
+            const SizedBox(height: 12),
+            _ActionCard(
+              icon: Icons.bar_chart_outlined,
+              iconColor: colorScheme.primary,
+              title: '班级统计',
+              subtitle: '查看班级写作活跃度',
+              onTap: () => context.go('/mood'),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  void _showCreateClassDialog(BuildContext context) {
+    final nameController = TextEditingController();
+    final schoolController = TextEditingController();
+
+    showDialog(
+      context: context,
+      builder: (dialogContext) => AlertDialog(
+        title: const Text('创建班级'),
+        content: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            TextField(
+              controller: nameController,
+              decoration: const InputDecoration(
+                labelText: '班级名称',
+                hintText: '例如: 三年二班',
+                border: OutlineInputBorder(),
+              ),
+            ),
+            const SizedBox(height: 12),
+            TextField(
+              controller: schoolController,
+              decoration: const InputDecoration(
+                labelText: '学校名称（可选）',
+                hintText: '例如: 阳光小学',
+                border: OutlineInputBorder(),
+              ),
+            ),
+          ],
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(dialogContext),
+            child: const Text('取消'),
+          ),
+          FilledButton(
+            onPressed: () {
+              if (nameController.text.trim().isNotEmpty) {
+                context.read<ClassBloc>().add(ClassCreate(
+                      name: nameController.text.trim(),
+                      schoolName: schoolController.text.trim().isEmpty
+                          ? null
+                          : schoolController.text.trim(),
+                    ));
+                Navigator.pop(dialogContext);
+                ScaffoldMessenger.of(context).showSnackBar(
+                  const SnackBar(content: Text('班级创建成功！')),
+                );
+              }
+            },
+            child: const Text('创建'),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _showAssignTopicDialog(BuildContext context) {
+    final titleController = TextEditingController();
+    final descController = TextEditingController();
+
+    showDialog(
+      context: context,
+      builder: (dialogContext) => AlertDialog(
+        title: const Text('布置主题'),
+        content: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            TextField(
+              controller: titleController,
+              decoration: const InputDecoration(
+                labelText: '主题标题',
+                hintText: '例如: 我的周末',
+                border: OutlineInputBorder(),
+              ),
+            ),
+            const SizedBox(height: 12),
+            TextField(
+              controller: descController,
+              decoration: const InputDecoration(
+                labelText: '描述（可选）',
+                hintText: '主题要求和说明',
+                border: OutlineInputBorder(),
+              ),
+              maxLines: 3,
+            ),
+          ],
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(dialogContext),
+            child: const Text('取消'),
+          ),
+          FilledButton(
+            onPressed: () {
+              if (titleController.text.trim().isNotEmpty) {
+                context.read<ClassBloc>().add(TopicAssign(
+                      classId: 'class-1',
+                      title: titleController.text.trim(),
+                      description: descController.text.trim().isEmpty
+                          ? null
+                          : descController.text.trim(),
+                    ));
+                Navigator.pop(dialogContext);
+                ScaffoldMessenger.of(context).showSnackBar(
+                  const SnackBar(content: Text('主题布置成功！')),
+                );
+              }
+            },
+            child: const Text('布置'),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+/// 操作卡片
+class _ActionCard extends StatelessWidget {
+  const _ActionCard({
+    required this.icon,
+    required this.iconColor,
+    required this.title,
+    required this.subtitle,
+    required this.onTap,
+  });
+
+  final IconData icon;
+  final Color iconColor;
+  final String title;
+  final String subtitle;
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
+
+    return Card(
+      elevation: 0,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(16),
+        side: BorderSide(color: colorScheme.outlineVariant),
+      ),
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(16),
+        child: Padding(
+          padding: const EdgeInsets.all(16),
+          child: Row(
+            children: [
+              Container(
+                width: 44,
+                height: 44,
+                decoration: BoxDecoration(
+                  color: iconColor.withValues(alpha: 0.12),
+                  borderRadius: BorderRadius.circular(12),
+                ),
+                child: Icon(icon, color: iconColor, size: 22),
+              ),
+              const SizedBox(width: 16),
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(title, style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w600)),
+                    const SizedBox(height: 2),
+                    Text(subtitle, style: theme.textTheme.bodySmall?.copyWith(
+                      color: colorScheme.onSurface.withValues(alpha: 0.5),
+                    )),
+                  ],
+                ),
+              ),
+              Icon(Icons.chevron_right, color: colorScheme.onSurface.withValues(alpha: 0.3)),
+            ],
+          ),
+        ),
       ),
     );
   }