feat: 新增等级与奖章系统

- 后端: 新增 user_levels, exp_history, badge_definitions, user_badges, level_configs 表 - 后端: 新增 LevelService 和 BadgeService 服务 - 后端: 新增等级/奖章/签到/排行榜 API 端点 - 后端: 考试/练习/陪练完成时触发经验值和奖章检查 - 前端: 新增 LevelBadge, ExpProgress, BadgeCard, LevelUpDialog 组件 - 前端: 新增排行榜页面 - 前端: 成长路径页面集成真实等级数据 - 数据库: 包含迁移脚本和初始数据
2026-01-29 16:19:22 +08:00
parent 5dfe23831d
commit 0933b936f9
19 changed files with 3207 additions and 65 deletions
--- a/backend/app/api/v1/init.py
+++ b/backend/app/api/v1/init.py
@@ -107,5 +107,8 @@ api_router.include_router(admin_portal_router, tags=["admin-portal"])
 # system_settings_router 系统设置路由（企业管理员配置）
 from .system_settings import router as system_settings_router
 api_router.include_router(system_settings_router, prefix="/settings", tags=["system-settings"])
+# level_router 等级与奖章路由
+from .endpoints.level import router as level_router
+api_router.include_router(level_router, prefix="/level", tags=["level"])

 __all__ = ["api_router"]
--- a/backend/app/api/v1/endpoints/level.py
+++ b/backend/app/api/v1/endpoints/level.py
@@ -0,0 +1,277 @@
+"""
+等级与奖章 API
+
+提供等级查询、奖章查询、排行榜、签到等接口
+"""
+
+from typing import Optional
+from fastapi import APIRouter, Depends, Query
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.core.deps import get_db, get_current_user
+from app.schemas.base import ResponseModel
+from app.services.level_service import LevelService
+from app.services.badge_service import BadgeService
+from app.models.user import User
+
+router = APIRouter()
+
+
+# ============================================
+# 等级相关接口
+# ============================================
+
+@router.get("/me", response_model=ResponseModel)
+async def get_my_level(
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    获取当前用户等级信息
+    
+    返回用户的等级、经验值、称号、连续登录天数等信息
+    """
+    level_service = LevelService(db)
+    level_info = await level_service.get_user_level_info(current_user.id)
+    
+    return ResponseModel(
+        message="获取成功",
+        data=level_info
+    )
+
+
+@router.get("/user/{user_id}", response_model=ResponseModel)
+async def get_user_level(
+    user_id: int,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    获取指定用户等级信息
+    
+    Args:
+        user_id: 用户ID
+    """
+    level_service = LevelService(db)
+    level_info = await level_service.get_user_level_info(user_id)
+    
+    return ResponseModel(
+        message="获取成功",
+        data=level_info
+    )
+
+
+@router.post("/checkin", response_model=ResponseModel)
+async def daily_checkin(
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    每日签到
+    
+    每天首次签到获得经验值，连续签到有额外奖励
+    """
+    level_service = LevelService(db)
+    badge_service = BadgeService(db)
+    
+    # 执行签到
+    checkin_result = await level_service.daily_checkin(current_user.id)
+    
+    # 检查是否解锁新奖章
+    new_badges = []
+    if checkin_result["success"]:
+        new_badges = await badge_service.check_and_award_badges(current_user.id)
+        await db.commit()
+    
+    return ResponseModel(
+        message=checkin_result["message"],
+        data={
+            **checkin_result,
+            "new_badges": new_badges
+        }
+    )
+
+
+@router.get("/exp-history", response_model=ResponseModel)
+async def get_exp_history(
+    limit: int = Query(default=50, ge=1, le=100),
+    offset: int = Query(default=0, ge=0),
+    exp_type: Optional[str] = Query(default=None, description="经验值类型筛选"),
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    获取经验值变化历史
+    
+    Args:
+        limit: 每页数量（默认50，最大100）
+        offset: 偏移量
+        exp_type: 类型筛选（exam/practice/training/task/login/badge/other）
+    """
+    level_service = LevelService(db)
+    history, total = await level_service.get_exp_history(
+        user_id=current_user.id,
+        limit=limit,
+        offset=offset,
+        exp_type=exp_type
+    )
+    
+    return ResponseModel(
+        message="获取成功",
+        data={
+            "items": history,
+            "total": total,
+            "limit": limit,
+            "offset": offset
+        }
+    )
+
+
+@router.get("/leaderboard", response_model=ResponseModel)
+async def get_leaderboard(
+    limit: int = Query(default=50, ge=1, le=100),
+    offset: int = Query(default=0, ge=0),
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    获取等级排行榜
+    
+    Args:
+        limit: 每页数量（默认50，最大100）
+        offset: 偏移量
+    """
+    level_service = LevelService(db)
+    
+    # 获取排行榜
+    leaderboard, total = await level_service.get_leaderboard(limit=limit, offset=offset)
+    
+    # 获取当前用户排名
+    my_rank = await level_service.get_user_rank(current_user.id)
+    
+    # 获取当前用户等级信息
+    my_level_info = await level_service.get_user_level_info(current_user.id)
+    
+    return ResponseModel(
+        message="获取成功",
+        data={
+            "items": leaderboard,
+            "total": total,
+            "limit": limit,
+            "offset": offset,
+            "my_rank": my_rank,
+            "my_level_info": my_level_info
+        }
+    )
+
+
+# ============================================
+# 奖章相关接口
+# ============================================
+
+@router.get("/badges/all", response_model=ResponseModel)
+async def get_all_badges(
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    获取所有奖章定义
+    
+    返回所有可获得的奖章列表
+    """
+    badge_service = BadgeService(db)
+    badges = await badge_service.get_all_badges()
+    
+    return ResponseModel(
+        message="获取成功",
+        data=badges
+    )
+
+
+@router.get("/badges/me", response_model=ResponseModel)
+async def get_my_badges(
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    获取当前用户的奖章（含解锁状态）
+    
+    返回所有奖章及用户是否已解锁
+    """
+    badge_service = BadgeService(db)
+    badges = await badge_service.get_user_badges_with_status(current_user.id)
+    
+    # 统计已解锁数量
+    unlocked_count = sum(1 for b in badges if b["unlocked"])
+    
+    return ResponseModel(
+        message="获取成功",
+        data={
+            "badges": badges,
+            "total": len(badges),
+            "unlocked_count": unlocked_count
+        }
+    )
+
+
+@router.get("/badges/unnotified", response_model=ResponseModel)
+async def get_unnotified_badges(
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    获取未通知的新奖章
+    
+    用于前端显示新获得奖章的弹窗提示
+    """
+    badge_service = BadgeService(db)
+    badges = await badge_service.get_unnotified_badges(current_user.id)
+    
+    return ResponseModel(
+        message="获取成功",
+        data=badges
+    )
+
+
+@router.post("/badges/mark-notified", response_model=ResponseModel)
+async def mark_badges_notified(
+    badge_ids: Optional[list[int]] = None,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    标记奖章为已通知
+    
+    Args:
+        badge_ids: 要标记的奖章ID列表（为空则标记全部）
+    """
+    badge_service = BadgeService(db)
+    await badge_service.mark_badges_notified(current_user.id, badge_ids)
+    await db.commit()
+    
+    return ResponseModel(
+        message="标记成功"
+    )
+
+
+@router.post("/check-badges", response_model=ResponseModel)
+async def check_and_award_badges(
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    检查并授予符合条件的奖章
+    
+    手动触发奖章检查，返回新获得的奖章
+    """
+    badge_service = BadgeService(db)
+    new_badges = await badge_service.check_and_award_badges(current_user.id)
+    await db.commit()
+    
+    return ResponseModel(
+        message="检查完成",
+        data={
+            "new_badges": new_badges,
+            "count": len(new_badges)
+        }
+    )
--- a/backend/app/api/v1/exam.py
+++ b/backend/app/api/v1/exam.py
@@ -135,7 +135,43 @@ async def submit_exam(
        )
    )
    
-    return ResponseModel(code=200, data=SubmitExamResponse(**result), message="考试提交成功")
+    # 考试通过时触发经验值和奖章检查
+    exp_result = None
+    new_badges = []
+    if result.get("is_passed"):
+        try:
+            from app.services.level_service import LevelService
+            from app.services.badge_service import BadgeService
+            
+            level_service = LevelService(db)
+            badge_service = BadgeService(db)
+            
+            # 添加考试经验值
+            exp_result = await level_service.add_exam_exp(
+                user_id=current_user.id,
+                exam_id=request.exam_id,
+                score=result.get("total_score", 0),
+                is_passed=True
+            )
+            
+            # 检查是否解锁新奖章
+            new_badges = await badge_service.check_and_award_badges(current_user.id)
+            
+            await db.commit()
+        except Exception as e:
+            logger.warning(f"考试经验值/奖章处理失败: {str(e)}")
+    
+    # 将经验值结果添加到返回数据
+    response_data = SubmitExamResponse(**result)
+    return ResponseModel(
+        code=200, 
+        data={
+            **response_data.model_dump(),
+            "exp_result": exp_result,
+            "new_badges": new_badges
+        }, 
+        message="考试提交成功"
+    )


@router.get("/mistakes", response_model=ResponseModel[GetMistakesResponse])
--- a/backend/app/api/v1/practice.py
+++ b/backend/app/api/v1/practice.py
@@ -704,10 +704,37 @@ async def end_practice_session(
        
        logger.info(f"结束陪练会话: session_id={session_id}, 时长={session.duration_seconds}秒, 轮次={session.turns}")
        
+        # 练习完成时触发经验值和奖章检查
+        exp_result = None
+        new_badges = []
+        try:
+            from app.services.level_service import LevelService
+            from app.services.badge_service import BadgeService
+            
+            level_service = LevelService(db)
+            badge_service = BadgeService(db)
+            
+            # 添加练习经验值
+            exp_result = await level_service.add_practice_exp(
+                user_id=current_user.id,
+                session_id=session.id
+            )
+            
+            # 检查是否解锁新奖章
+            new_badges = await badge_service.check_and_award_badges(current_user.id)
+            
+            await db.commit()
+        except Exception as e:
+            logger.warning(f"练习经验值/奖章处理失败: {str(e)}")
+        
        return ResponseModel(
            code=200,
            message="会话已结束",
-            data=session
+            data={
+                "session": session,
+                "exp_result": exp_result,
+                "new_badges": new_badges
+            }
        )
    
    except HTTPException:
--- a/backend/app/api/v1/training.py
+++ b/backend/app/api/v1/training.py
@@ -262,7 +262,39 @@ async def end_training(

        logger.info(f"用户 {current_user['id']} 结束陪练会话: {session_id}")
        
-        return ResponseModel(data=response, message="结束陪练成功")
+        # 陪练完成时触发经验值和奖章检查
+        exp_result = None
+        new_badges = []
+        try:
+            from app.services.level_service import LevelService
+            from app.services.badge_service import BadgeService
+            
+            level_service = LevelService(db)
+            badge_service = BadgeService(db)
+            
+            # 获取陪练得分（如果有报告的话）
+            score = response.get("total_score") if isinstance(response, dict) else None
+            
+            # 添加陪练经验值
+            exp_result = await level_service.add_training_exp(
+                user_id=current_user["id"],
+                session_id=session_id,
+                score=score
+            )
+            
+            # 检查是否解锁新奖章
+            new_badges = await badge_service.check_and_award_badges(current_user["id"])
+            
+            await db.commit()
+        except Exception as e:
+            logger.warning(f"陪练经验值/奖章处理失败: {str(e)}")
+        
+        # 将经验值结果添加到返回数据
+        result_data = response if isinstance(response, dict) else {"session_id": session_id}
+        result_data["exp_result"] = exp_result
+        result_data["new_badges"] = new_badges
+
+        return ResponseModel(data=result_data, message="结束陪练成功")

    except HTTPException:
        raise
--- a/backend/app/models/init.py
+++ b/backend/app/models/init.py
@@ -17,6 +17,16 @@ from app.models.practice import PracticeScene, PracticeSession, PracticeDialogue
 from app.models.system_log import SystemLog
 from app.models.task import Task, TaskCourse, TaskAssignment
 from app.models.notification import Notification
+from app.models.level import (
+    UserLevel,
+    ExpHistory,
+    BadgeDefinition,
+    UserBadge,
+    LevelConfig,
+    ExpType,
+    BadgeCategory,
+    ConditionType,
+)

 __all__ = [
    "Base",
@@ -46,4 +56,12 @@ __all__ = [
    "TaskCourse",
    "TaskAssignment",
    "Notification",
+    "UserLevel",
+    "ExpHistory",
+    "BadgeDefinition",
+    "UserBadge",
+    "LevelConfig",
+    "ExpType",
+    "BadgeCategory",
+    "ConditionType",
 ]
--- a/backend/app/models/level.py
+++ b/backend/app/models/level.py
@@ -0,0 +1,153 @@
+"""
+等级与奖章系统模型
+
+包含：
+- UserLevel: 用户等级信息
+- ExpHistory: 经验值变化历史
+- BadgeDefinition: 奖章定义
+- UserBadge: 用户已获得的奖章
+- LevelConfig: 等级配置
+"""
+
+from datetime import datetime, date
+from typing import Optional, List
+from sqlalchemy import Column, Integer, String, DateTime, Date, Boolean, ForeignKey, Text
+from sqlalchemy.orm import relationship
+
+from app.models.base import BaseModel
+
+
+class UserLevel(BaseModel):
+    """用户等级表"""
+    __tablename__ = "user_levels"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False, unique=True, index=True)
+    level = Column(Integer, nullable=False, default=1, comment="当前等级")
+    exp = Column(Integer, nullable=False, default=0, comment="当前经验值")
+    total_exp = Column(Integer, nullable=False, default=0, comment="累计获得经验值")
+    login_streak = Column(Integer, nullable=False, default=0, comment="连续登录天数")
+    max_login_streak = Column(Integer, nullable=False, default=0, comment="历史最长连续登录天数")
+    last_login_date = Column(Date, nullable=True, comment="最后登录日期")
+    last_checkin_at = Column(DateTime, nullable=True, comment="最后签到时间")
+    
+    # 关联
+    user = relationship("User", backref="user_level", uselist=False)
+    
+    # 不继承 is_deleted 等软删除字段
+    is_deleted = None
+    deleted_at = None
+
+
+class ExpHistory(BaseModel):
+    """经验值历史表"""
+    __tablename__ = "exp_history"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
+    exp_change = Column(Integer, nullable=False, comment="经验值变化")
+    exp_type = Column(String(50), nullable=False, index=True, comment="类型：exam/practice/training/task/login/badge/other")
+    source_id = Column(Integer, nullable=True, comment="来源记录ID")
+    description = Column(String(255), nullable=False, comment="描述")
+    level_before = Column(Integer, nullable=True, comment="变化前等级")
+    level_after = Column(Integer, nullable=True, comment="变化后等级")
+    
+    # 关联
+    user = relationship("User", backref="exp_histories")
+    
+    # 不继承软删除字段
+    is_deleted = None
+    deleted_at = None
+
+
+class BadgeDefinition(BaseModel):
+    """奖章定义表"""
+    __tablename__ = "badge_definitions"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    code = Column(String(50), nullable=False, unique=True, comment="奖章编码")
+    name = Column(String(100), nullable=False, comment="奖章名称")
+    description = Column(String(255), nullable=False, comment="奖章描述")
+    icon = Column(String(100), nullable=False, default="Medal", comment="图标名称")
+    category = Column(String(50), nullable=False, index=True, comment="分类")
+    condition_type = Column(String(50), nullable=False, comment="条件类型")
+    condition_field = Column(String(100), nullable=True, comment="条件字段")
+    condition_value = Column(Integer, nullable=False, default=1, comment="条件数值")
+    exp_reward = Column(Integer, nullable=False, default=0, comment="奖励经验值")
+    sort_order = Column(Integer, nullable=False, default=0, comment="排序")
+    is_active = Column(Boolean, nullable=False, default=True, comment="是否启用")
+    
+    # 关联
+    user_badges = relationship("UserBadge", back_populates="badge")
+    
+    # 不继承软删除字段
+    is_deleted = None
+    deleted_at = None
+
+
+class UserBadge(BaseModel):
+    """用户奖章表"""
+    __tablename__ = "user_badges"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
+    badge_id = Column(Integer, ForeignKey("badge_definitions.id", ondelete="CASCADE"), nullable=False, index=True)
+    unlocked_at = Column(DateTime, nullable=False, default=datetime.now, comment="解锁时间")
+    is_notified = Column(Boolean, nullable=False, default=False, comment="是否已通知")
+    notified_at = Column(DateTime, nullable=True, comment="通知时间")
+    
+    # 关联
+    user = relationship("User", backref="badges")
+    badge = relationship("BadgeDefinition", back_populates="user_badges")
+    
+    # 不继承软删除字段
+    is_deleted = None
+    deleted_at = None
+
+
+class LevelConfig(BaseModel):
+    """等级配置表"""
+    __tablename__ = "level_configs"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    level = Column(Integer, nullable=False, unique=True, comment="等级")
+    exp_required = Column(Integer, nullable=False, comment="升到此级所需经验值")
+    total_exp_required = Column(Integer, nullable=False, comment="累计所需经验值")
+    title = Column(String(50), nullable=False, comment="等级称号")
+    color = Column(String(20), nullable=True, comment="等级颜色")
+    
+    # 不继承软删除字段
+    is_deleted = None
+    deleted_at = None
+
+
+# 经验值类型枚举
+class ExpType:
+    """经验值类型"""
+    EXAM = "exam"           # 考试
+    PRACTICE = "practice"   # 练习
+    TRAINING = "training"   # 陪练
+    TASK = "task"           # 任务
+    LOGIN = "login"         # 登录/签到
+    BADGE = "badge"         # 奖章奖励
+    OTHER = "other"         # 其他
+
+
+# 奖章分类枚举
+class BadgeCategory:
+    """奖章分类"""
+    LEARNING = "learning"   # 学习进度
+    EXAM = "exam"           # 考试成绩
+    PRACTICE = "practice"   # 练习时长
+    STREAK = "streak"       # 连续打卡
+    SPECIAL = "special"     # 特殊成就
+
+
+# 条件类型枚举
+class ConditionType:
+    """解锁条件类型"""
+    COUNT = "count"         # 次数
+    SCORE = "score"         # 分数
+    STREAK = "streak"       # 连续天数
+    LEVEL = "level"         # 等级
+    DURATION = "duration"   # 时长
--- a/backend/app/services/badge_service.py
+++ b/backend/app/services/badge_service.py
@@ -0,0 +1,467 @@
+"""
+奖章服务
+
+提供奖章管理功能：
+- 获取奖章定义
+- 检查奖章解锁条件
+- 授予奖章
+- 获取用户奖章
+"""
+
+from datetime import datetime
+from typing import Optional, List, Dict, Any, Tuple
+from sqlalchemy import select, func, and_, or_
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.core.logger import get_logger
+from app.models.level import (
+    BadgeDefinition, UserBadge, UserLevel, ExpHistory, ExpType,
+    BadgeCategory, ConditionType
+)
+from app.models.exam import Exam
+from app.models.practice import PracticeSession, PracticeReport
+from app.models.training import TrainingSession, TrainingReport
+from app.models.task import TaskAssignment
+
+logger = get_logger(__name__)
+
+
+class BadgeService:
+    """奖章服务"""
+    
+    def __init__(self, db: AsyncSession):
+        self.db = db
+        self._badge_definitions: Optional[List[BadgeDefinition]] = None
+    
+    async def _get_badge_definitions(self) -> List[BadgeDefinition]:
+        """获取所有奖章定义（带缓存）"""
+        if self._badge_definitions is None:
+            result = await self.db.execute(
+                select(BadgeDefinition)
+                .where(BadgeDefinition.is_active == True)
+                .order_by(BadgeDefinition.sort_order)
+            )
+            self._badge_definitions = list(result.scalars().all())
+        return self._badge_definitions
+    
+    async def get_all_badges(self) -> List[Dict[str, Any]]:
+        """
+        获取所有奖章定义
+        
+        Returns:
+            奖章定义列表
+        """
+        badges = await self._get_badge_definitions()
+        return [
+            {
+                "id": b.id,
+                "code": b.code,
+                "name": b.name,
+                "description": b.description,
+                "icon": b.icon,
+                "category": b.category,
+                "condition_type": b.condition_type,
+                "condition_value": b.condition_value,
+                "exp_reward": b.exp_reward,
+            }
+            for b in badges
+        ]
+    
+    async def get_user_badges(self, user_id: int) -> List[Dict[str, Any]]:
+        """
+        获取用户已解锁的奖章
+        
+        Args:
+            user_id: 用户ID
+            
+        Returns:
+            用户奖章列表
+        """
+        result = await self.db.execute(
+            select(UserBadge, BadgeDefinition)
+            .join(BadgeDefinition, UserBadge.badge_id == BadgeDefinition.id)
+            .where(UserBadge.user_id == user_id)
+            .order_by(UserBadge.unlocked_at.desc())
+        )
+        rows = result.all()
+        
+        return [
+            {
+                "id": user_badge.id,
+                "badge_id": badge.id,
+                "code": badge.code,
+                "name": badge.name,
+                "description": badge.description,
+                "icon": badge.icon,
+                "category": badge.category,
+                "unlocked_at": user_badge.unlocked_at.isoformat() if user_badge.unlocked_at else None,
+                "is_notified": user_badge.is_notified,
+            }
+            for user_badge, badge in rows
+        ]
+    
+    async def get_user_badges_with_status(self, user_id: int) -> List[Dict[str, Any]]:
+        """
+        获取所有奖章及用户解锁状态
+        
+        Args:
+            user_id: 用户ID
+            
+        Returns:
+            所有奖章列表（含解锁状态）
+        """
+        # 获取所有奖章定义
+        all_badges = await self._get_badge_definitions()
+        
+        # 获取用户已解锁的奖章
+        result = await self.db.execute(
+            select(UserBadge).where(UserBadge.user_id == user_id)
+        )
+        user_badges = {ub.badge_id: ub for ub in result.scalars().all()}
+        
+        badges_with_status = []
+        for badge in all_badges:
+            user_badge = user_badges.get(badge.id)
+            badges_with_status.append({
+                "id": badge.id,
+                "code": badge.code,
+                "name": badge.name,
+                "description": badge.description,
+                "icon": badge.icon,
+                "category": badge.category,
+                "condition_type": badge.condition_type,
+                "condition_value": badge.condition_value,
+                "exp_reward": badge.exp_reward,
+                "unlocked": user_badge is not None,
+                "unlocked_at": user_badge.unlocked_at.isoformat() if user_badge else None,
+            })
+        
+        return badges_with_status
+    
+    async def _get_user_stats(self, user_id: int) -> Dict[str, Any]:
+        """
+        获取用户统计数据（用于检查奖章条件）
+        
+        Args:
+            user_id: 用户ID
+            
+        Returns:
+            统计数据字典
+        """
+        stats = {
+            "login_count": 0,
+            "login_streak": 0,
+            "course_completed": 0,
+            "exam_passed": 0,
+            "exam_perfect_count": 0,
+            "exam_excellent": 0,
+            "practice_count": 0,
+            "practice_hours": 0,
+            "training_count": 0,
+            "first_practice_90": 0,
+            "user_level": 1,
+        }
+        
+        # 获取用户等级信息
+        result = await self.db.execute(
+            select(UserLevel).where(UserLevel.user_id == user_id)
+        )
+        user_level = result.scalar_one_or_none()
+        if user_level:
+            stats["login_streak"] = user_level.login_streak
+            stats["user_level"] = user_level.level
+        
+        # 获取登录次数（从经验值历史）
+        result = await self.db.execute(
+            select(func.count(ExpHistory.id))
+            .where(
+                ExpHistory.user_id == user_id,
+                ExpHistory.exp_type == ExpType.LOGIN
+            )
+        )
+        stats["login_count"] = result.scalar() or 0
+        
+        # 获取考试统计
+        result = await self.db.execute(
+            select(
+                func.count(Exam.id),
+                func.sum(func.if_(Exam.score >= 100, 1, 0)),
+                func.sum(func.if_(Exam.score >= 90, 1, 0))
+            )
+            .where(
+                Exam.user_id == user_id,
+                Exam.is_passed == True,
+                Exam.status == "submitted"
+            )
+        )
+        row = result.first()
+        if row:
+            stats["exam_passed"] = row[0] or 0
+            stats["exam_perfect_count"] = int(row[1] or 0)
+            stats["exam_excellent"] = int(row[2] or 0)
+        
+        # 获取练习统计
+        result = await self.db.execute(
+            select(
+                func.count(PracticeSession.id),
+                func.sum(PracticeSession.duration_seconds)
+            )
+            .where(
+                PracticeSession.user_id == user_id,
+                PracticeSession.status == "completed"
+            )
+        )
+        row = result.first()
+        if row:
+            stats["practice_count"] = row[0] or 0
+            total_seconds = row[1] or 0
+            stats["practice_hours"] = total_seconds / 3600
+        
+        # 获取陪练统计
+        result = await self.db.execute(
+            select(func.count(TrainingSession.id))
+            .where(
+                TrainingSession.user_id == user_id,
+                TrainingSession.status == "COMPLETED"
+            )
+        )
+        stats["training_count"] = result.scalar() or 0
+        
+        # 检查首次高分陪练
+        result = await self.db.execute(
+            select(func.count(TrainingReport.id))
+            .where(
+                TrainingReport.user_id == user_id,
+                TrainingReport.overall_score >= 90
+            )
+        )
+        stats["first_practice_90"] = 1 if (result.scalar() or 0) > 0 else 0
+        
+        return stats
+    
+    async def check_and_award_badges(self, user_id: int) -> List[Dict[str, Any]]:
+        """
+        检查并授予用户符合条件的奖章
+        
+        Args:
+            user_id: 用户ID
+            
+        Returns:
+            新获得的奖章列表
+        """
+        # 获取用户统计数据
+        stats = await self._get_user_stats(user_id)
+        
+        # 获取所有奖章定义
+        all_badges = await self._get_badge_definitions()
+        
+        # 获取用户已有的奖章
+        result = await self.db.execute(
+            select(UserBadge.badge_id).where(UserBadge.user_id == user_id)
+        )
+        owned_badge_ids = {row[0] for row in result.all()}
+        
+        # 检查每个奖章的解锁条件
+        newly_awarded = []
+        for badge in all_badges:
+            if badge.id in owned_badge_ids:
+                continue
+            
+            # 检查条件
+            condition_met = self._check_badge_condition(badge, stats)
+            
+            if condition_met:
+                # 授予奖章
+                user_badge = UserBadge(
+                    user_id=user_id,
+                    badge_id=badge.id,
+                    unlocked_at=datetime.now(),
+                    is_notified=False
+                )
+                self.db.add(user_badge)
+                
+                # 如果有经验奖励，添加经验值
+                if badge.exp_reward > 0:
+                    from app.services.level_service import LevelService
+                    level_service = LevelService(self.db)
+                    await level_service.add_exp(
+                        user_id=user_id,
+                        exp_amount=badge.exp_reward,
+                        exp_type=ExpType.BADGE,
+                        description=f"解锁奖章「{badge.name}」"
+                    )
+                
+                newly_awarded.append({
+                    "badge_id": badge.id,
+                    "code": badge.code,
+                    "name": badge.name,
+                    "description": badge.description,
+                    "icon": badge.icon,
+                    "exp_reward": badge.exp_reward,
+                })
+                
+                logger.info(f"用户 {user_id} 解锁奖章: {badge.name}")
+        
+        if newly_awarded:
+            await self.db.flush()
+        
+        return newly_awarded
+    
+    def _check_badge_condition(self, badge: BadgeDefinition, stats: Dict[str, Any]) -> bool:
+        """
+        检查奖章解锁条件
+        
+        Args:
+            badge: 奖章定义
+            stats: 用户统计数据
+            
+        Returns:
+            是否满足条件
+        """
+        condition_field = badge.condition_field
+        condition_value = badge.condition_value
+        condition_type = badge.condition_type
+        
+        if not condition_field:
+            return False
+        
+        current_value = stats.get(condition_field, 0)
+        
+        if condition_type == ConditionType.COUNT:
+            return current_value >= condition_value
+        elif condition_type == ConditionType.SCORE:
+            return current_value >= condition_value
+        elif condition_type == ConditionType.STREAK:
+            return current_value >= condition_value
+        elif condition_type == ConditionType.LEVEL:
+            return current_value >= condition_value
+        elif condition_type == ConditionType.DURATION:
+            return current_value >= condition_value
+        
+        return False
+    
+    async def award_badge(self, user_id: int, badge_code: str) -> Optional[Dict[str, Any]]:
+        """
+        直接授予用户奖章（用于特殊奖章）
+        
+        Args:
+            user_id: 用户ID
+            badge_code: 奖章编码
+            
+        Returns:
+            奖章信息（如果成功）
+        """
+        # 获取奖章定义
+        result = await self.db.execute(
+            select(BadgeDefinition).where(BadgeDefinition.code == badge_code)
+        )
+        badge = result.scalar_one_or_none()
+        
+        if not badge:
+            logger.warning(f"奖章不存在: {badge_code}")
+            return None
+        
+        # 检查是否已拥有
+        result = await self.db.execute(
+            select(UserBadge).where(
+                UserBadge.user_id == user_id,
+                UserBadge.badge_id == badge.id
+            )
+        )
+        if result.scalar_one_or_none():
+            logger.info(f"用户 {user_id} 已拥有奖章: {badge_code}")
+            return None
+        
+        # 授予奖章
+        user_badge = UserBadge(
+            user_id=user_id,
+            badge_id=badge.id,
+            unlocked_at=datetime.now(),
+            is_notified=False
+        )
+        self.db.add(user_badge)
+        
+        # 添加经验值奖励
+        if badge.exp_reward > 0:
+            from app.services.level_service import LevelService
+            level_service = LevelService(self.db)
+            await level_service.add_exp(
+                user_id=user_id,
+                exp_amount=badge.exp_reward,
+                exp_type=ExpType.BADGE,
+                description=f"解锁奖章「{badge.name}」"
+            )
+        
+        await self.db.flush()
+        
+        logger.info(f"用户 {user_id} 获得奖章: {badge.name}")
+        
+        return {
+            "badge_id": badge.id,
+            "code": badge.code,
+            "name": badge.name,
+            "description": badge.description,
+            "icon": badge.icon,
+            "exp_reward": badge.exp_reward,
+        }
+    
+    async def get_unnotified_badges(self, user_id: int) -> List[Dict[str, Any]]:
+        """
+        获取用户未通知的新奖章
+        
+        Args:
+            user_id: 用户ID
+            
+        Returns:
+            未通知的奖章列表
+        """
+        result = await self.db.execute(
+            select(UserBadge, BadgeDefinition)
+            .join(BadgeDefinition, UserBadge.badge_id == BadgeDefinition.id)
+            .where(
+                UserBadge.user_id == user_id,
+                UserBadge.is_notified == False
+            )
+            .order_by(UserBadge.unlocked_at.desc())
+        )
+        rows = result.all()
+        
+        return [
+            {
+                "user_badge_id": user_badge.id,
+                "badge_id": badge.id,
+                "code": badge.code,
+                "name": badge.name,
+                "description": badge.description,
+                "icon": badge.icon,
+                "exp_reward": badge.exp_reward,
+                "unlocked_at": user_badge.unlocked_at.isoformat() if user_badge.unlocked_at else None,
+            }
+            for user_badge, badge in rows
+        ]
+    
+    async def mark_badges_notified(self, user_id: int, badge_ids: List[int] = None):
+        """
+        标记奖章为已通知
+        
+        Args:
+            user_id: 用户ID
+            badge_ids: 要标记的奖章ID列表（为空则标记全部）
+        """
+        from sqlalchemy import update
+        
+        query = update(UserBadge).where(
+            UserBadge.user_id == user_id,
+            UserBadge.is_notified == False
+        )
+        
+        if badge_ids:
+            query = query.where(UserBadge.badge_id.in_(badge_ids))
+        
+        query = query.values(
+            is_notified=True,
+            notified_at=datetime.now()
+        )
+        
+        await self.db.execute(query)
+        await self.db.flush()
--- a/backend/app/services/level_service.py
+++ b/backend/app/services/level_service.py
@@ -0,0 +1,588 @@
+"""
+等级服务
+
+提供用户等级管理功能：
+- 经验值获取与计算
+- 等级升级判断
+- 每日签到
+- 排行榜查询
+"""
+
+from datetime import datetime, date, timedelta
+from typing import Optional, List, Dict, Any, Tuple
+from sqlalchemy import select, func, and_, desc
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.core.logger import get_logger
+from app.models.level import (
+    UserLevel, ExpHistory, LevelConfig, ExpType
+)
+from app.models.user import User
+
+logger = get_logger(__name__)
+
+
+# 经验值配置
+EXP_CONFIG = {
+    # 每日签到
+    "login_base": 10,           # 基础签到经验
+    "login_streak_7": 20,       # 连续7天额外奖励
+    "login_streak_30": 50,      # 连续30天额外奖励
+    
+    # 考试
+    "exam_pass": 50,            # 通过考试
+    "exam_excellent": 30,       # 90分以上额外
+    "exam_perfect": 50,         # 满分额外
+    
+    # 练习
+    "practice_complete": 20,    # 完成练习
+    "practice_good": 10,        # 80分以上额外
+    
+    # 陪练
+    "training_complete": 30,    # 完成陪练
+    "training_good": 15,        # 80分以上额外
+    
+    # 任务
+    "task_complete": 40,        # 完成任务
+}
+
+
+class LevelService:
+    """等级服务"""
+    
+    def __init__(self, db: AsyncSession):
+        self.db = db
+        self._level_configs: Optional[List[LevelConfig]] = None
+    
+    async def _get_level_configs(self) -> List[LevelConfig]:
+        """获取等级配置（带缓存）"""
+        if self._level_configs is None:
+            result = await self.db.execute(
+                select(LevelConfig).order_by(LevelConfig.level)
+            )
+            self._level_configs = list(result.scalars().all())
+        return self._level_configs
+    
+    async def get_or_create_user_level(self, user_id: int) -> UserLevel:
+        """
+        获取或创建用户等级记录
+        
+        Args:
+            user_id: 用户ID
+            
+        Returns:
+            UserLevel 对象
+        """
+        result = await self.db.execute(
+            select(UserLevel).where(UserLevel.user_id == user_id)
+        )
+        user_level = result.scalar_one_or_none()
+        
+        if not user_level:
+            user_level = UserLevel(
+                user_id=user_id,
+                level=1,
+                exp=0,
+                total_exp=0,
+                login_streak=0,
+                max_login_streak=0
+            )
+            self.db.add(user_level)
+            await self.db.flush()
+            logger.info(f"为用户 {user_id} 创建等级记录")
+        
+        return user_level
+    
+    async def get_user_level_info(self, user_id: int) -> Dict[str, Any]:
+        """
+        获取用户等级详细信息
+        
+        Args:
+            user_id: 用户ID
+            
+        Returns:
+            包含等级、经验值、称号等信息的字典
+        """
+        user_level = await self.get_or_create_user_level(user_id)
+        level_configs = await self._get_level_configs()
+        
+        # 获取当前等级配置
+        current_config = next(
+            (c for c in level_configs if c.level == user_level.level),
+            level_configs[0] if level_configs else None
+        )
+        
+        # 获取下一等级配置
+        next_config = next(
+            (c for c in level_configs if c.level == user_level.level + 1),
+            None
+        )
+        
+        # 计算升级所需经验
+        exp_to_next_level = 0
+        next_level_total_exp = 0
+        if next_config:
+            next_level_total_exp = next_config.total_exp_required
+            exp_to_next_level = next_level_total_exp - user_level.total_exp
+            if exp_to_next_level < 0:
+                exp_to_next_level = 0
+        
+        return {
+            "user_id": user_id,
+            "level": user_level.level,
+            "exp": user_level.exp,
+            "total_exp": user_level.total_exp,
+            "title": current_config.title if current_config else "初学者",
+            "color": current_config.color if current_config else "#909399",
+            "login_streak": user_level.login_streak,
+            "max_login_streak": user_level.max_login_streak,
+            "last_checkin_at": user_level.last_checkin_at.isoformat() if user_level.last_checkin_at else None,
+            "next_level_exp": next_level_total_exp,
+            "exp_to_next_level": exp_to_next_level,
+            "is_max_level": next_config is None,
+        }
+    
+    async def add_exp(
+        self,
+        user_id: int,
+        exp_amount: int,
+        exp_type: str,
+        description: str,
+        source_id: Optional[int] = None
+    ) -> Tuple[UserLevel, bool, Optional[int]]:
+        """
+        增加用户经验值
+        
+        Args:
+            user_id: 用户ID
+            exp_amount: 经验值数量
+            exp_type: 经验值类型
+            description: 描述
+            source_id: 来源ID（可选）
+            
+        Returns:
+            (用户等级对象, 是否升级, 新等级)
+        """
+        if exp_amount <= 0:
+            logger.warning(f"尝试增加非正数经验值: {exp_amount}")
+            return await self.get_or_create_user_level(user_id), False, None
+        
+        user_level = await self.get_or_create_user_level(user_id)
+        level_before = user_level.level
+        
+        # 增加经验值
+        user_level.exp += exp_amount
+        user_level.total_exp += exp_amount
+        
+        # 检查是否升级
+        level_configs = await self._get_level_configs()
+        leveled_up = False
+        new_level = None
+        
+        for config in level_configs:
+            if config.level > user_level.level and user_level.total_exp >= config.total_exp_required:
+                user_level.level = config.level
+                leveled_up = True
+                new_level = config.level
+        
+        # 记录经验值历史
+        exp_history = ExpHistory(
+            user_id=user_id,
+            exp_change=exp_amount,
+            exp_type=exp_type,
+            source_id=source_id,
+            description=description,
+            level_before=level_before,
+            level_after=user_level.level
+        )
+        self.db.add(exp_history)
+        
+        await self.db.flush()
+        
+        if leveled_up:
+            logger.info(f"用户 {user_id} 升级: {level_before} -> {new_level}")
+        
+        logger.info(f"用户 {user_id} 获得 {exp_amount} 经验值: {description}")
+        
+        return user_level, leveled_up, new_level
+    
+    async def daily_checkin(self, user_id: int) -> Dict[str, Any]:
+        """
+        每日签到
+        
+        Args:
+            user_id: 用户ID
+            
+        Returns:
+            签到结果
+        """
+        user_level = await self.get_or_create_user_level(user_id)
+        today = date.today()
+        
+        # 检查今天是否已签到
+        if user_level.last_login_date == today:
+            return {
+                "success": False,
+                "message": "今天已经签到过了",
+                "exp_gained": 0,
+                "login_streak": user_level.login_streak,
+                "already_checked_in": True
+            }
+        
+        # 计算连续登录
+        yesterday = today - timedelta(days=1)
+        if user_level.last_login_date == yesterday:
+            # 连续登录
+            user_level.login_streak += 1
+        else:
+            # 中断了，重新计算
+            user_level.login_streak = 1
+        
+        # 更新最长连续登录记录
+        if user_level.login_streak > user_level.max_login_streak:
+            user_level.max_login_streak = user_level.login_streak
+        
+        user_level.last_login_date = today
+        user_level.last_checkin_at = datetime.now()
+        
+        # 计算签到经验
+        exp_gained = EXP_CONFIG["login_base"]
+        bonus_exp = 0
+        bonus_reason = []
+        
+        # 连续登录奖励
+        if user_level.login_streak >= 30 and user_level.login_streak % 30 == 0:
+            bonus_exp += EXP_CONFIG["login_streak_30"]
+            bonus_reason.append(f"连续{user_level.login_streak}天")
+        elif user_level.login_streak >= 7 and user_level.login_streak % 7 == 0:
+            bonus_exp += EXP_CONFIG["login_streak_7"]
+            bonus_reason.append(f"连续{user_level.login_streak}天")
+        
+        total_exp = exp_gained + bonus_exp
+        
+        # 添加经验值
+        description = f"每日签到"
+        if bonus_reason:
+            description += f"（{', '.join(bonus_reason)}奖励）"
+        
+        _, leveled_up, new_level = await self.add_exp(
+            user_id=user_id,
+            exp_amount=total_exp,
+            exp_type=ExpType.LOGIN,
+            description=description
+        )
+        
+        await self.db.commit()
+        
+        return {
+            "success": True,
+            "message": "签到成功",
+            "exp_gained": total_exp,
+            "base_exp": exp_gained,
+            "bonus_exp": bonus_exp,
+            "login_streak": user_level.login_streak,
+            "leveled_up": leveled_up,
+            "new_level": new_level,
+            "already_checked_in": False
+        }
+    
+    async def get_exp_history(
+        self,
+        user_id: int,
+        limit: int = 50,
+        offset: int = 0,
+        exp_type: Optional[str] = None
+    ) -> Tuple[List[Dict[str, Any]], int]:
+        """
+        获取经验值历史
+        
+        Args:
+            user_id: 用户ID
+            limit: 限制数量
+            offset: 偏移量
+            exp_type: 类型筛选
+            
+        Returns:
+            (历史记录列表, 总数)
+        """
+        # 构建查询
+        query = select(ExpHistory).where(ExpHistory.user_id == user_id)
+        
+        if exp_type:
+            query = query.where(ExpHistory.exp_type == exp_type)
+        
+        # 获取总数
+        count_query = select(func.count(ExpHistory.id)).where(ExpHistory.user_id == user_id)
+        if exp_type:
+            count_query = count_query.where(ExpHistory.exp_type == exp_type)
+        total_result = await self.db.execute(count_query)
+        total = total_result.scalar() or 0
+        
+        # 获取记录
+        query = query.order_by(desc(ExpHistory.created_at)).limit(limit).offset(offset)
+        result = await self.db.execute(query)
+        records = result.scalars().all()
+        
+        history = [
+            {
+                "id": r.id,
+                "exp_change": r.exp_change,
+                "exp_type": r.exp_type,
+                "description": r.description,
+                "level_before": r.level_before,
+                "level_after": r.level_after,
+                "created_at": r.created_at.isoformat() if r.created_at else None
+            }
+            for r in records
+        ]
+        
+        return history, total
+    
+    async def get_leaderboard(
+        self,
+        limit: int = 50,
+        offset: int = 0
+    ) -> Tuple[List[Dict[str, Any]], int]:
+        """
+        获取等级排行榜
+        
+        Args:
+            limit: 限制数量
+            offset: 偏移量
+            
+        Returns:
+            (排行榜列表, 总数)
+        """
+        # 获取总数
+        count_query = select(func.count(UserLevel.id))
+        total_result = await self.db.execute(count_query)
+        total = total_result.scalar() or 0
+        
+        # 获取排行榜（按等级和总经验值排序）
+        query = (
+            select(UserLevel, User)
+            .join(User, UserLevel.user_id == User.id)
+            .where(User.is_deleted == False)
+            .order_by(desc(UserLevel.level), desc(UserLevel.total_exp))
+            .limit(limit)
+            .offset(offset)
+        )
+        result = await self.db.execute(query)
+        rows = result.all()
+        
+        # 获取等级配置
+        level_configs = await self._get_level_configs()
+        config_map = {c.level: c for c in level_configs}
+        
+        leaderboard = []
+        for i, (user_level, user) in enumerate(rows):
+            config = config_map.get(user_level.level)
+            leaderboard.append({
+                "rank": offset + i + 1,
+                "user_id": user.id,
+                "username": user.username,
+                "full_name": user.full_name,
+                "avatar_url": user.avatar_url,
+                "level": user_level.level,
+                "title": config.title if config else "初学者",
+                "color": config.color if config else "#909399",
+                "total_exp": user_level.total_exp,
+                "login_streak": user_level.login_streak,
+            })
+        
+        return leaderboard, total
+    
+    async def get_user_rank(self, user_id: int) -> Optional[int]:
+        """
+        获取用户排名
+        
+        Args:
+            user_id: 用户ID
+            
+        Returns:
+            排名（从1开始）
+        """
+        user_level = await self.get_or_create_user_level(user_id)
+        
+        # 计算排在该用户前面的人数
+        query = select(func.count(UserLevel.id)).where(
+            and_(
+                UserLevel.user_id != user_id,
+                (
+                    (UserLevel.level > user_level.level) |
+                    (
+                        (UserLevel.level == user_level.level) &
+                        (UserLevel.total_exp > user_level.total_exp)
+                    )
+                )
+            )
+        )
+        result = await self.db.execute(query)
+        count = result.scalar() or 0
+        
+        return count + 1
+    
+    async def add_exam_exp(
+        self,
+        user_id: int,
+        exam_id: int,
+        score: float,
+        is_passed: bool
+    ) -> Optional[Dict[str, Any]]:
+        """
+        考试通过获得经验值
+        
+        Args:
+            user_id: 用户ID
+            exam_id: 考试ID
+            score: 得分
+            is_passed: 是否通过
+            
+        Returns:
+            经验值变化信息
+        """
+        if not is_passed:
+            return None
+        
+        exp_gained = EXP_CONFIG["exam_pass"]
+        bonus = []
+        
+        if score >= 100:
+            exp_gained += EXP_CONFIG["exam_perfect"]
+            bonus.append("满分")
+        elif score >= 90:
+            exp_gained += EXP_CONFIG["exam_excellent"]
+            bonus.append("优秀")
+        
+        description = f"通过考试"
+        if bonus:
+            description += f"（{', '.join(bonus)}奖励）"
+        
+        _, leveled_up, new_level = await self.add_exp(
+            user_id=user_id,
+            exp_amount=exp_gained,
+            exp_type=ExpType.EXAM,
+            description=description,
+            source_id=exam_id
+        )
+        
+        return {
+            "exp_gained": exp_gained,
+            "leveled_up": leveled_up,
+            "new_level": new_level
+        }
+    
+    async def add_practice_exp(
+        self,
+        user_id: int,
+        session_id: int,
+        score: Optional[float] = None
+    ) -> Dict[str, Any]:
+        """
+        完成练习获得经验值
+        
+        Args:
+            user_id: 用户ID
+            session_id: 练习会话ID
+            score: 得分（可选）
+            
+        Returns:
+            经验值变化信息
+        """
+        exp_gained = EXP_CONFIG["practice_complete"]
+        bonus = []
+        
+        if score is not None and score >= 80:
+            exp_gained += EXP_CONFIG["practice_good"]
+            bonus.append("高分")
+        
+        description = f"完成练习"
+        if bonus:
+            description += f"（{', '.join(bonus)}奖励）"
+        
+        _, leveled_up, new_level = await self.add_exp(
+            user_id=user_id,
+            exp_amount=exp_gained,
+            exp_type=ExpType.PRACTICE,
+            description=description,
+            source_id=session_id
+        )
+        
+        return {
+            "exp_gained": exp_gained,
+            "leveled_up": leveled_up,
+            "new_level": new_level
+        }
+    
+    async def add_training_exp(
+        self,
+        user_id: int,
+        session_id: int,
+        score: Optional[float] = None
+    ) -> Dict[str, Any]:
+        """
+        完成陪练获得经验值
+        
+        Args:
+            user_id: 用户ID
+            session_id: 陪练会话ID
+            score: 得分（可选）
+            
+        Returns:
+            经验值变化信息
+        """
+        exp_gained = EXP_CONFIG["training_complete"]
+        bonus = []
+        
+        if score is not None and score >= 80:
+            exp_gained += EXP_CONFIG["training_good"]
+            bonus.append("高分")
+        
+        description = f"完成陪练"
+        if bonus:
+            description += f"（{', '.join(bonus)}奖励）"
+        
+        _, leveled_up, new_level = await self.add_exp(
+            user_id=user_id,
+            exp_amount=exp_gained,
+            exp_type=ExpType.TRAINING,
+            description=description,
+            source_id=session_id
+        )
+        
+        return {
+            "exp_gained": exp_gained,
+            "leveled_up": leveled_up,
+            "new_level": new_level
+        }
+    
+    async def add_task_exp(
+        self,
+        user_id: int,
+        task_id: int
+    ) -> Dict[str, Any]:
+        """
+        完成任务获得经验值
+        
+        Args:
+            user_id: 用户ID
+            task_id: 任务ID
+            
+        Returns:
+            经验值变化信息
+        """
+        exp_gained = EXP_CONFIG["task_complete"]
+        
+        _, leveled_up, new_level = await self.add_exp(
+            user_id=user_id,
+            exp_amount=exp_gained,
+            exp_type=ExpType.TASK,
+            description="完成任务",
+            source_id=task_id
+        )
+        
+        return {
+            "exp_gained": exp_gained,
+            "leveled_up": leveled_up,
+            "new_level": new_level
+        }
--- a/backend/migrations/README.md
+++ b/backend/migrations/README.md
@@ -1,82 +1,82 @@
 # 数据库迁移说明

-## 目录结构
-
-```
-migrations/
-├── README.md          # 本说明文件
-└── versions/
-    └── add_practice_rooms_table.sql   # 双人对练功能迁移脚本
-```
+本目录包含 KPL 考培练系统的数据库迁移脚本。

 ## 迁移脚本列表

-### 1. add_practice_rooms_table.sql
+| 脚本 | 说明 | 创建时间 |
+|------|------|----------|
+| `add_level_badge_system.sql` | 等级与奖章系统 | 2026-01-29 |

-**功能**：双人对练功能数据库结构
+## 执行迁移

-**新增表**：
- `practice_rooms` - 对练房间表
- `practice_room_messages` - 房间实时消息表
+### 测试环境（Docker）

-**修改表**：
- `practice_dialogues` - 新增 `user_id`, `role_name`, `room_id`, `message_type` 字段
- `practice_sessions` - 新增 `room_id`, `participant_role`, `session_type` 字段
- `practice_reports` - 新增 `room_id`, `user_id`, `report_type`, `partner_feedback`, `interaction_score` 字段
-
-## 执行方法
-
-### 方法一：直接登录 MySQL 执行
+KPL 测试环境数据库在服务器 Docker 容器中运行：

 ```bash
-# 1. 登录 MySQL
-docker exec -it kpl-mysql-dev mysql -uroot -p
+# 1. SSH 登录 KPL 服务器
+ssh root@<KPL服务器IP>

-# 2. 选择数据库
-USE kaopeilian;
+# 2. 进入项目目录
+cd /www/wwwroot/kpl.ireborn.com.cn

-# 3. 复制并执行 SQL 脚本内容
-# 或使用 source 命令执行脚本文件
+# 3. 执行迁移（方法一：直接执行）
+docker exec -i kpl-mysql-dev mysql -uroot -pnj861021 kpl_dev < backend/migrations/add_level_badge_system.sql
+
+# 或者（方法二：交互式执行）
+docker exec -it kpl-mysql-dev mysql -uroot -pnj861021 kpl_dev
+# 然后复制粘贴 SQL 脚本内容执行
+
+# 方法三：从本地执行（需要先上传SQL文件到服务器）
+# scp backend/migrations/add_level_badge_system.sql root@<服务器IP>:/tmp/
+# ssh root@<服务器IP> "docker exec -i kpl-mysql-dev mysql -uroot -pnj861021 kpl_dev < /tmp/add_level_badge_system.sql"
 ```

-### 方法二：使用 docker exec 执行
+**注意**：MySQL 容器密码为 `nj861021`（之前通过 `docker exec kpl-mysql-dev env | grep MYSQL` 确认）
+
+### 生产环境
+
+生产环境迁移前请确保：
+1. 已备份数据库
+2. 在低峰期执行
+3. 测试环境验证通过

 ```bash
-# 1. 将 SQL 文件复制到容器
-docker cp migrations/versions/add_practice_rooms_table.sql kpl-mysql-dev:/tmp/
-
-# 2. 执行迁移
-docker exec -i kpl-mysql-dev mysql -uroot -pYourPassword kaopeilian < /tmp/add_practice_rooms_table.sql
-```
-
-### 方法三：远程 SSH 执行
-
-```bash
-# SSH 到服务器后执行
-ssh user@your-server "docker exec -i kpl-mysql-dev mysql -uroot -pYourPassword kaopeilian" < migrations/versions/add_practice_rooms_table.sql
+# 执行迁移（替换为实际的生产数据库配置）
+mysql -h<host> -u<user> -p<password> <database> < backend/migrations/add_level_badge_system.sql
 ```

 ## 回滚方法

-每个迁移脚本底部都包含了回滚 SQL。如需回滚，取消注释并执行回滚部分的 SQL 即可。
+如需回滚，执行以下 SQL：

-## 生产环境迁移检查清单
+```sql
+DROP TABLE IF EXISTS user_badges;
+DROP TABLE IF EXISTS badge_definitions;
+DROP TABLE IF EXISTS exp_history;
+DROP TABLE IF EXISTS level_configs;
+DROP TABLE IF EXISTS user_levels;
+```

- [ ] 备份数据库
- [ ] 在测试环境验证迁移脚本
- [ ] 检查是否有正在进行的事务
- [ ] 执行迁移脚本
- [ ] 验证表结构是否正确
- [ ] 验证索引是否创建成功
- [ ] 重启后端服务（如有必要）
- [ ] 验证功能是否正常
+## 验证迁移

-## 注意事项
+执行以下查询验证表是否创建成功：

-1. **MySQL 版本兼容性**：脚本使用了 `IF NOT EXISTS` 和 `IF EXISTS`，确保 MySQL 版本支持这些语法（8.0+ 完全支持）
+```sql
+SHOW TABLES LIKE '%level%';
+SHOW TABLES LIKE '%badge%';
+SHOW TABLES LIKE '%exp%';

-2. **字符集**：表默认使用 `utf8mb4` 字符集，支持表情符号等特殊字符
+-- 查看表结构
+DESCRIBE user_levels;
+DESCRIBE exp_history;
+DESCRIBE badge_definitions;
+DESCRIBE user_badges;
+DESCRIBE level_configs;

-3. **外键约束**：脚本中的外键约束默认被注释，根据实际需求决定是否启用
-
-4. **索引优化**：已为常用查询字段创建索引，如需调整请根据实际查询模式优化
+-- 验证初始数据
+SELECT COUNT(*) FROM level_configs;  -- 应该是 10 条
+SELECT COUNT(*) FROM badge_definitions;  -- 应该是 20 条
+SELECT COUNT(*) FROM user_levels;  -- 应该等于用户数
+```
--- a/backend/migrations/add_level_badge_system.sql
+++ b/backend/migrations/add_level_badge_system.sql
@@ -0,0 +1,192 @@
+-- =====================================================
+-- 等级与奖章系统数据库迁移脚本
+-- 版本: 1.0.0
+-- 创建时间: 2026-01-29
+-- 说明: 添加用户等级系统和奖章系统相关表
+-- =====================================================
+
+-- 使用事务确保原子性
+START TRANSACTION;
+
+-- =====================================================
+-- 1. 用户等级表 (user_levels)
+-- 存储用户的等级和经验值信息
+-- =====================================================
+CREATE TABLE IF NOT EXISTS user_levels (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    user_id INT NOT NULL COMMENT '用户ID',
+    level INT NOT NULL DEFAULT 1 COMMENT '当前等级',
+    exp INT NOT NULL DEFAULT 0 COMMENT '当前经验值',
+    total_exp INT NOT NULL DEFAULT 0 COMMENT '累计获得经验值',
+    login_streak INT NOT NULL DEFAULT 0 COMMENT '连续登录天数',
+    max_login_streak INT NOT NULL DEFAULT 0 COMMENT '历史最长连续登录天数',
+    last_login_date DATE NULL COMMENT '最后登录日期（用于计算连续登录）',
+    last_checkin_at DATETIME NULL COMMENT '最后签到时间',
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    UNIQUE KEY uk_user_id (user_id),
+    INDEX idx_level (level),
+    INDEX idx_total_exp (total_exp),
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户等级表';
+
+-- =====================================================
+-- 2. 经验值历史表 (exp_history)
+-- 记录每次经验值变化的详细信息
+-- =====================================================
+CREATE TABLE IF NOT EXISTS exp_history (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    user_id INT NOT NULL COMMENT '用户ID',
+    exp_change INT NOT NULL COMMENT '经验值变化（正为获得，负为扣除）',
+    exp_type VARCHAR(50) NOT NULL COMMENT '类型：exam/practice/training/task/login/badge/other',
+    source_id INT NULL COMMENT '来源记录ID（如考试ID、练习ID等）',
+    description VARCHAR(255) NOT NULL COMMENT '描述',
+    level_before INT NULL COMMENT '变化前等级',
+    level_after INT NULL COMMENT '变化后等级',
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    INDEX idx_user_id (user_id),
+    INDEX idx_exp_type (exp_type),
+    INDEX idx_created_at (created_at),
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='经验值历史表';
+
+-- =====================================================
+-- 3. 奖章定义表 (badge_definitions)
+-- 定义所有可获得的奖章及其解锁条件
+-- =====================================================
+CREATE TABLE IF NOT EXISTS badge_definitions (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    code VARCHAR(50) NOT NULL COMMENT '奖章编码（唯一标识）',
+    name VARCHAR(100) NOT NULL COMMENT '奖章名称',
+    description VARCHAR(255) NOT NULL COMMENT '奖章描述',
+    icon VARCHAR(100) NOT NULL DEFAULT 'Medal' COMMENT '图标名称（Element Plus 图标）',
+    category VARCHAR(50) NOT NULL COMMENT '分类：learning/exam/practice/streak/special',
+    condition_type VARCHAR(50) NOT NULL COMMENT '条件类型：count/score/streak/level/duration',
+    condition_field VARCHAR(100) NULL COMMENT '条件字段（用于复杂条件）',
+    condition_value INT NOT NULL DEFAULT 1 COMMENT '条件数值',
+    exp_reward INT NOT NULL DEFAULT 0 COMMENT '解锁奖励经验值',
+    sort_order INT NOT NULL DEFAULT 0 COMMENT '排序顺序',
+    is_active TINYINT(1) NOT NULL DEFAULT 1 COMMENT '是否启用',
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    UNIQUE KEY uk_code (code),
+    INDEX idx_category (category),
+    INDEX idx_is_active (is_active)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='奖章定义表';
+
+-- =====================================================
+-- 4. 用户奖章表 (user_badges)
+-- 记录用户已解锁的奖章
+-- =====================================================
+CREATE TABLE IF NOT EXISTS user_badges (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    user_id INT NOT NULL COMMENT '用户ID',
+    badge_id INT NOT NULL COMMENT '奖章ID',
+    unlocked_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '解锁时间',
+    is_notified TINYINT(1) NOT NULL DEFAULT 0 COMMENT '是否已通知用户',
+    notified_at DATETIME NULL COMMENT '通知时间',
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE KEY uk_user_badge (user_id, badge_id),
+    INDEX idx_user_id (user_id),
+    INDEX idx_badge_id (badge_id),
+    INDEX idx_unlocked_at (unlocked_at),
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
+    FOREIGN KEY (badge_id) REFERENCES badge_definitions(id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户奖章表';
+
+-- =====================================================
+-- 5. 等级配置表 (level_configs)
+-- 定义每个等级所需的经验值和称号
+-- =====================================================
+CREATE TABLE IF NOT EXISTS level_configs (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    level INT NOT NULL COMMENT '等级',
+    exp_required INT NOT NULL COMMENT '升到此级所需经验值',
+    total_exp_required INT NOT NULL COMMENT '累计所需经验值',
+    title VARCHAR(50) NOT NULL COMMENT '等级称号',
+    color VARCHAR(20) NULL COMMENT '等级颜色（十六进制）',
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE KEY uk_level (level)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='等级配置表';
+
+-- =====================================================
+-- 6. 插入等级配置数据
+-- =====================================================
+INSERT INTO level_configs (level, exp_required, total_exp_required, title, color) VALUES
+(1, 0, 0, '初学者', '#909399'),
+(2, 100, 100, '入门学徒', '#67C23A'),
+(3, 200, 300, '勤奋学员', '#67C23A'),
+(4, 400, 700, '进阶学员', '#409EFF'),
+(5, 600, 1300, '优秀学员', '#409EFF'),
+(6, 1000, 2300, '精英学员', '#E6A23C'),
+(7, 1500, 3800, '资深学员', '#E6A23C'),
+(8, 2000, 5800, '学习达人', '#F56C6C'),
+(9, 3000, 8800, '学霸', '#F56C6C'),
+(10, 5000, 13800, '大师', '#9B59B6');
+
+-- =====================================================
+-- 7. 插入奖章定义数据
+-- =====================================================
+
+-- 7.1 学习进度类奖章
+INSERT INTO badge_definitions (code, name, description, icon, category, condition_type, condition_field, condition_value, exp_reward, sort_order) VALUES
+('first_login', '初来乍到', '首次登录系统', 'Star', 'learning', 'count', 'login_count', 1, 10, 101),
+('course_1', '求知若渴', '完成1门课程学习', 'Reading', 'learning', 'count', 'course_completed', 1, 30, 102),
+('course_5', '博学多才', '完成5门课程学习', 'Collection', 'learning', 'count', 'course_completed', 5, 100, 103),
+('course_10', '学识渊博', '完成10门课程学习', 'Files', 'learning', 'count', 'course_completed', 10, 200, 104);
+
+-- 7.2 考试成绩类奖章
+INSERT INTO badge_definitions (code, name, description, icon, category, condition_type, condition_field, condition_value, exp_reward, sort_order) VALUES
+('exam_pass_1', '初试牛刀', '通过1次考试', 'Select', 'exam', 'count', 'exam_passed', 1, 20, 201),
+('exam_pass_10', '身经百战', '通过10次考试', 'Finished', 'exam', 'count', 'exam_passed', 10, 100, 202),
+('exam_pass_50', '考试达人', '通过50次考试', 'Trophy', 'exam', 'count', 'exam_passed', 50, 300, 203),
+('exam_perfect', '完美答卷', '考试获得满分', 'Medal', 'exam', 'score', 'exam_perfect_count', 1, 150, 204),
+('exam_excellent_10', '学霸之路', '10次考试90分以上', 'TrendCharts', 'exam', 'count', 'exam_excellent', 10, 200, 205);
+
+-- 7.3 练习时长类奖章
+INSERT INTO badge_definitions (code, name, description, icon, category, condition_type, condition_field, condition_value, exp_reward, sort_order) VALUES
+('practice_1h', '初窥门径', '累计练习1小时', 'Clock', 'practice', 'duration', 'practice_hours', 1, 30, 301),
+('practice_10h', '勤学苦练', '累计练习10小时', 'Timer', 'practice', 'duration', 'practice_hours', 10, 100, 302),
+('practice_50h', '炉火纯青', '累计练习50小时', 'Stopwatch', 'practice', 'duration', 'practice_hours', 50, 300, 303),
+('practice_100', '练习狂人', '完成100次练习', 'Operation', 'practice', 'count', 'practice_count', 100, 200, 304);
+
+-- 7.4 连续打卡类奖章
+INSERT INTO badge_definitions (code, name, description, icon, category, condition_type, condition_field, condition_value, exp_reward, sort_order) VALUES
+('streak_3', '小试身手', '连续登录3天', 'Calendar', 'streak', 'streak', 'login_streak', 3, 20, 401),
+('streak_7', '坚持一周', '连续登录7天', 'Calendar', 'streak', 'streak', 'login_streak', 7, 50, 402),
+('streak_30', '持之以恒', '连续登录30天', 'Calendar', 'streak', 'streak', 'login_streak', 30, 200, 403),
+('streak_100', '百日不懈', '连续登录100天', 'Calendar', 'streak', 'streak', 'login_streak', 100, 500, 404);
+
+-- 7.5 特殊成就类奖章
+INSERT INTO badge_definitions (code, name, description, icon, category, condition_type, condition_field, condition_value, exp_reward, sort_order) VALUES
+('level_5', '初露锋芒', '达到5级', 'Rank', 'special', 'level', 'user_level', 5, 100, 501),
+('level_10', '登峰造极', '达到满级', 'Crown', 'special', 'level', 'user_level', 10, 500, 502),
+('training_master', '陪练大师', '完成50次陪练', 'Headset', 'special', 'count', 'training_count', 50, 300, 503),
+('first_perfect_practice', '首次完美', '陪练首次获得90分以上', 'StarFilled', 'special', 'score', 'first_practice_90', 1, 100, 504);
+
+-- =====================================================
+-- 8. 为现有用户初始化等级数据
+-- =====================================================
+INSERT INTO user_levels (user_id, level, exp, total_exp, login_streak, last_login_date)
+SELECT 
+    id as user_id,
+    1 as level,
+    0 as exp,
+    0 as total_exp,
+    0 as login_streak,
+    NULL as last_login_date
+FROM users
+WHERE is_deleted = 0
+ON DUPLICATE KEY UPDATE updated_at = CURRENT_TIMESTAMP;
+
+-- 提交事务
+COMMIT;
+
+-- =====================================================
+-- 回滚脚本（如需回滚，执行以下语句）
+-- =====================================================
+-- DROP TABLE IF EXISTS user_badges;
+-- DROP TABLE IF EXISTS badge_definitions;
+-- DROP TABLE IF EXISTS exp_history;
+-- DROP TABLE IF EXISTS level_configs;
+-- DROP TABLE IF EXISTS user_levels;
--- a/frontend/src/api/level.ts
+++ b/frontend/src/api/level.ts
@@ -0,0 +1,182 @@
+/**
+ * 等级与奖章 API
+ */
+
+import request from '@/api/request'
+
+// 类型定义
+export interface LevelInfo {
+  user_id: number
+  level: number
+  exp: number
+  total_exp: number
+  title: string
+  color: string
+  login_streak: number
+  max_login_streak: number
+  last_checkin_at: string | null
+  next_level_exp: number
+  exp_to_next_level: number
+  is_max_level: boolean
+}
+
+export interface ExpHistoryItem {
+  id: number
+  exp_change: number
+  exp_type: string
+  description: string
+  level_before: number | null
+  level_after: number | null
+  created_at: string
+}
+
+export interface LeaderboardItem {
+  rank: number
+  user_id: number
+  username: string
+  full_name: string | null
+  avatar_url: string | null
+  level: number
+  title: string
+  color: string
+  total_exp: number
+  login_streak: number
+}
+
+export interface Badge {
+  id: number
+  code: string
+  name: string
+  description: string
+  icon: string
+  category: string
+  condition_type?: string
+  condition_value?: number
+  exp_reward: number
+  unlocked?: boolean
+  unlocked_at?: string | null
+}
+
+export interface CheckinResult {
+  success: boolean
+  message: string
+  exp_gained: number
+  base_exp?: number
+  bonus_exp?: number
+  login_streak: number
+  leveled_up?: boolean
+  new_level?: number | null
+  already_checked_in?: boolean
+  new_badges?: Badge[]
+}
+
+// API 函数
+
+/**
+ * 获取当前用户等级信息
+ */
+export function getMyLevel() {
+  return request.get<LevelInfo>('/level/me')
+}
+
+/**
+ * 获取指定用户等级信息
+ */
+export function getUserLevel(userId: number) {
+  return request.get<LevelInfo>(`/level/user/${userId}`)
+}
+
+/**
+ * 每日签到
+ */
+export function dailyCheckin() {
+  return request.post<CheckinResult>('/level/checkin')
+}
+
+/**
+ * 获取经验值历史
+ */
+export function getExpHistory(params?: {
+  limit?: number
+  offset?: number
+  exp_type?: string
+}) {
+  return request.get<{
+    items: ExpHistoryItem[]
+    total: number
+    limit: number
+    offset: number
+  }>('/level/exp-history', { params })
+}
+
+/**
+ * 获取等级排行榜
+ */
+export function getLeaderboard(params?: {
+  limit?: number
+  offset?: number
+}) {
+  return request.get<{
+    items: LeaderboardItem[]
+    total: number
+    limit: number
+    offset: number
+    my_rank: number
+    my_level_info: LevelInfo
+  }>('/level/leaderboard', { params })
+}
+
+/**
+ * 获取所有奖章定义
+ */
+export function getAllBadges() {
+  return request.get<Badge[]>('/level/badges/all')
+}
+
+/**
+ * 获取用户奖章（含解锁状态）
+ */
+export function getMyBadges() {
+  return request.get<{
+    badges: Badge[]
+    total: number
+    unlocked_count: number
+  }>('/level/badges/me')
+}
+
+/**
+ * 获取未通知的新奖章
+ */
+export function getUnnotifiedBadges() {
+  return request.get<Badge[]>('/level/badges/unnotified')
+}
+
+/**
+ * 标记奖章为已通知
+ */
+export function markBadgesNotified(badgeIds?: number[]) {
+  return request.post('/level/badges/mark-notified', badgeIds)
+}
+
+/**
+ * 手动检查并授予奖章
+ */
+export function checkAndAwardBadges() {
+  return request.post<{
+    new_badges: Badge[]
+    count: number
+  }>('/level/check-badges')
+}
+
+export default {
+  getMyLevel,
+  getUserLevel,
+  dailyCheckin,
+  getExpHistory,
+  getLeaderboard,
+  getAllBadges,
+  getMyBadges,
+  getUnnotifiedBadges,
+  markBadgesNotified,
+  checkAndAwardBadges
+}
--- a/frontend/src/components/BadgeCard.vue
+++ b/frontend/src/components/BadgeCard.vue
@@ -0,0 +1,174 @@
+<template>
+  <div 
+    class="badge-card" 
+    :class="{ unlocked, locked: !unlocked }"
+    @click="handleClick"
+  >
+    <div class="badge-icon">
+      <el-icon :size="iconSize">
+        <component :is="iconComponent" />
+      </el-icon>
+    </div>
+    <div class="badge-info">
+      <div class="badge-name">{{ name }}</div>
+      <div class="badge-desc">{{ description }}</div>
+      <div class="badge-reward" v-if="expReward > 0 && !unlocked">
+        +{{ expReward }} 经验
+      </div>
+      <div class="badge-unlock-time" v-if="unlocked && unlockedAt">
+        {{ formatDate(unlockedAt) }}解锁
+      </div>
+    </div>
+    <div class="badge-status" v-if="!unlocked">
+      <el-icon><Lock /></el-icon>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'
+import { 
+  Lock, Medal, Star, Reading, Collection, Files, 
+  Select, Finished, Trophy, TrendCharts, Clock, 
+  Timer, Stopwatch, Operation, Calendar, Rank, 
+  Crown, Headset, StarFilled 
+} from '@element-plus/icons-vue'
+
+interface Props {
+  code: string
+  name: string
+  description: string
+  icon: string
+  category: string
+  expReward?: number
+  unlocked?: boolean
+  unlockedAt?: string | null
+  size?: 'small' | 'medium' | 'large'
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  expReward: 0,
+  unlocked: false,
+  unlockedAt: null,
+  size: 'medium'
+})
+
+const emit = defineEmits<{
+  (e: 'click', badge: Props): void
+}>()
+
+// 图标映射
+const iconMap: Record<string, any> = {
+  Medal, Star, Reading, Collection, Files, Select,
+  Finished, Trophy, TrendCharts, Clock, Timer,
+  Stopwatch, Operation, Calendar, Rank, Crown,
+  Headset, StarFilled, Lock
+}
+
+const iconComponent = computed(() => {
+  return iconMap[props.icon] || Medal
+})
+
+const sizeMap = {
+  small: 24,
+  medium: 32,
+  large: 48
+}
+
+const iconSize = computed(() => sizeMap[props.size])
+
+const formatDate = (dateStr: string) => {
+  const date = new Date(dateStr)
+  return `${date.getMonth() + 1}/${date.getDate()}`
+}
+
+const handleClick = () => {
+  emit('click', props)
+}
+</script>
+
+<style scoped lang="scss">
+.badge-card {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 12px 16px;
+  border-radius: 8px;
+  background-color: #fff;
+  border: 1px solid #EBEEF5;
+  cursor: pointer;
+  transition: all 0.3s;
+  position: relative;
+  
+  &:hover {
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
+  }
+  
+  &.unlocked {
+    .badge-icon {
+      background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
+      color: #fff;
+    }
+  }
+  
+  &.locked {
+    opacity: 0.6;
+    
+    .badge-icon {
+      background-color: #F5F7FA;
+      color: #C0C4CC;
+    }
+    
+    .badge-name {
+      color: #909399;
+    }
+  }
+  
+  .badge-icon {
+    width: 48px;
+    height: 48px;
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+  }
+  
+  .badge-info {
+    flex: 1;
+    min-width: 0;
+    
+    .badge-name {
+      font-size: 14px;
+      font-weight: 600;
+      color: #303133;
+      margin-bottom: 4px;
+    }
+    
+    .badge-desc {
+      font-size: 12px;
+      color: #909399;
+      overflow: hidden;
+      text-overflow: ellipsis;
+      white-space: nowrap;
+    }
+    
+    .badge-reward {
+      font-size: 12px;
+      color: #E6A23C;
+      margin-top: 4px;
+    }
+    
+    .badge-unlock-time {
+      font-size: 12px;
+      color: #67C23A;
+      margin-top: 4px;
+    }
+  }
+  
+  .badge-status {
+    color: #C0C4CC;
+    font-size: 20px;
+  }
+}
+</style>
--- a/frontend/src/components/ExpProgress.vue
+++ b/frontend/src/components/ExpProgress.vue
@@ -0,0 +1,100 @@
+<template>
+  <div class="exp-progress">
+    <div class="progress-header">
+      <span class="label">经验值</span>
+      <span class="value">{{ currentExp }} / {{ targetExp }}</span>
+    </div>
+    <div class="progress-bar">
+      <div 
+        class="progress-fill" 
+        :style="{ width: progressPercent + '%', backgroundColor: color }"
+      ></div>
+    </div>
+    <div class="progress-footer" v-if="showFooter">
+      <span class="exp-to-next">距下一级还需 {{ expToNext }} 经验</span>
+      <span class="total-exp" v-if="showTotal">累计 {{ totalExp }}</span>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'
+
+interface Props {
+  currentExp: number
+  targetExp: number
+  totalExp?: number
+  color?: string
+  showFooter?: boolean
+  showTotal?: boolean
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  totalExp: 0,
+  color: '#409EFF',
+  showFooter: true,
+  showTotal: false
+})
+
+const progressPercent = computed(() => {
+  if (props.targetExp <= 0) return 100
+  const percent = (props.currentExp / props.targetExp) * 100
+  return Math.min(percent, 100)
+})
+
+const expToNext = computed(() => {
+  return Math.max(0, props.targetExp - props.currentExp)
+})
+</script>
+
+<style scoped lang="scss">
+.exp-progress {
+  .progress-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 8px;
+    
+    .label {
+      font-size: 14px;
+      color: #606266;
+    }
+    
+    .value {
+      font-size: 14px;
+      font-weight: 600;
+      color: #303133;
+    }
+  }
+  
+  .progress-bar {
+    height: 8px;
+    background-color: #EBEEF5;
+    border-radius: 4px;
+    overflow: hidden;
+    
+    .progress-fill {
+      height: 100%;
+      border-radius: 4px;
+      transition: width 0.3s ease;
+    }
+  }
+  
+  .progress-footer {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-top: 4px;
+    
+    .exp-to-next {
+      font-size: 12px;
+      color: #909399;
+    }
+    
+    .total-exp {
+      font-size: 12px;
+      color: #909399;
+    }
+  }
+}
+</style>
--- a/frontend/src/components/LevelBadge.vue
+++ b/frontend/src/components/LevelBadge.vue
@@ -0,0 +1,85 @@
+<template>
+  <div class="level-badge" :style="{ '--level-color': color }">
+    <div class="level-icon">
+      <span class="level-number">{{ level }}</span>
+    </div>
+    <div class="level-info" v-if="showInfo">
+      <span class="level-title">{{ title }}</span>
+      <span class="level-exp" v-if="showExp">{{ exp }}/{{ nextLevelExp }}</span>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'
+
+interface Props {
+  level: number
+  title?: string
+  color?: string
+  exp?: number
+  nextLevelExp?: number
+  showInfo?: boolean
+  showExp?: boolean
+  size?: 'small' | 'medium' | 'large'
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  title: '初学者',
+  color: '#909399',
+  exp: 0,
+  nextLevelExp: 1000,
+  showInfo: true,
+  showExp: false,
+  size: 'medium'
+})
+
+const sizeMap = {
+  small: { icon: 24, font: 12 },
+  medium: { icon: 32, font: 14 },
+  large: { icon: 48, font: 18 }
+}
+</script>
+
+<style scoped lang="scss">
+.level-badge {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  
+  .level-icon {
+    width: 32px;
+    height: 32px;
+    border-radius: 50%;
+    background: linear-gradient(135deg, var(--level-color) 0%, color-mix(in srgb, var(--level-color) 80%, #000) 100%);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
+    
+    .level-number {
+      color: #fff;
+      font-size: 14px;
+      font-weight: 700;
+      text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
+    }
+  }
+  
+  .level-info {
+    display: flex;
+    flex-direction: column;
+    gap: 2px;
+    
+    .level-title {
+      font-size: 14px;
+      font-weight: 600;
+      color: var(--level-color);
+    }
+    
+    .level-exp {
+      font-size: 12px;
+      color: #909399;
+    }
+  }
+}
+</style>
--- a/frontend/src/components/LevelUpDialog.vue
+++ b/frontend/src/components/LevelUpDialog.vue
@@ -0,0 +1,297 @@
+<template>
+  <el-dialog
+    v-model="visible"
+    :show-close="false"
+    :close-on-click-modal="false"
+    width="360px"
+    center
+    class="level-up-dialog"
+  >
+    <div class="dialog-content">
+      <!-- 等级升级 -->
+      <div class="level-up-section" v-if="leveledUp">
+        <div class="celebration">
+          <div class="firework"></div>
+          <div class="firework"></div>
+          <div class="firework"></div>
+        </div>
+        <div class="level-badge-large">
+          <span class="level-number">{{ newLevel }}</span>
+        </div>
+        <div class="congrats-text">恭喜升级!</div>
+        <div class="level-title" :style="{ color: levelColor }">{{ levelTitle }}</div>
+      </div>
+      
+      <!-- 经验值获得 -->
+      <div class="exp-section" v-if="expGained > 0 && !leveledUp">
+        <el-icon class="exp-icon" :size="48"><TrendCharts /></el-icon>
+        <div class="exp-text">经验值 +{{ expGained }}</div>
+      </div>
+      
+      <!-- 新获得奖章 -->
+      <div class="badges-section" v-if="newBadges && newBadges.length > 0">
+        <div class="section-title">新解锁奖章</div>
+        <div class="badges-list">
+          <div 
+            class="badge-item" 
+            v-for="badge in newBadges" 
+            :key="badge.code"
+          >
+            <div class="badge-icon">
+              <el-icon :size="24">
+                <component :is="getIconComponent(badge.icon)" />
+              </el-icon>
+            </div>
+            <div class="badge-name">{{ badge.name }}</div>
+            <div class="badge-reward" v-if="badge.exp_reward > 0">
+              +{{ badge.exp_reward }}
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+    
+    <template #footer>
+      <el-button type="primary" @click="handleClose" size="large" round>
+        太棒了!
+      </el-button>
+    </template>
+  </el-dialog>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, watch } from 'vue'
+import { 
+  TrendCharts, Medal, Star, Reading, Collection, Files, 
+  Select, Finished, Trophy, Clock, Timer, Stopwatch, 
+  Operation, Calendar, Rank, Crown, Headset, StarFilled 
+} from '@element-plus/icons-vue'
+
+interface Badge {
+  code: string
+  name: string
+  icon: string
+  exp_reward?: number
+}
+
+interface Props {
+  modelValue: boolean
+  leveledUp?: boolean
+  newLevel?: number | null
+  levelTitle?: string
+  levelColor?: string
+  expGained?: number
+  newBadges?: Badge[]
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  leveledUp: false,
+  newLevel: null,
+  levelTitle: '',
+  levelColor: '#409EFF',
+  expGained: 0,
+  newBadges: () => []
+})
+
+const emit = defineEmits<{
+  (e: 'update:modelValue', value: boolean): void
+  (e: 'close'): void
+}>()
+
+const visible = computed({
+  get: () => props.modelValue,
+  set: (value) => emit('update:modelValue', value)
+})
+
+// 图标映射
+const iconMap: Record<string, any> = {
+  Medal, Star, Reading, Collection, Files, Select,
+  Finished, Trophy, TrendCharts, Clock, Timer,
+  Stopwatch, Operation, Calendar, Rank, Crown,
+  Headset, StarFilled
+}
+
+const getIconComponent = (icon: string) => {
+  return iconMap[icon] || Medal
+}
+
+const handleClose = () => {
+  visible.value = false
+  emit('close')
+}
+</script>
+
+<style scoped lang="scss">
+.level-up-dialog {
+  :deep(.el-dialog__header) {
+    display: none;
+  }
+  
+  :deep(.el-dialog__body) {
+    padding: 24px;
+  }
+}
+
+.dialog-content {
+  text-align: center;
+  
+  .level-up-section {
+    position: relative;
+    padding: 20px 0;
+    
+    .celebration {
+      position: absolute;
+      top: 0;
+      left: 0;
+      right: 0;
+      bottom: 0;
+      pointer-events: none;
+      overflow: hidden;
+      
+      .firework {
+        position: absolute;
+        width: 4px;
+        height: 4px;
+        border-radius: 50%;
+        animation: firework 1s ease-out infinite;
+        
+        &:nth-child(1) {
+          left: 20%;
+          top: 30%;
+          background-color: #FFD700;
+          animation-delay: 0s;
+        }
+        
+        &:nth-child(2) {
+          left: 50%;
+          top: 20%;
+          background-color: #FF6B6B;
+          animation-delay: 0.3s;
+        }
+        
+        &:nth-child(3) {
+          left: 80%;
+          top: 40%;
+          background-color: #4ECDC4;
+          animation-delay: 0.6s;
+        }
+      }
+    }
+    
+    .level-badge-large {
+      width: 80px;
+      height: 80px;
+      margin: 0 auto 16px;
+      border-radius: 50%;
+      background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      box-shadow: 0 8px 24px rgba(255, 165, 0, 0.4);
+      animation: bounce 0.6s ease;
+      
+      .level-number {
+        font-size: 36px;
+        font-weight: 700;
+        color: #fff;
+        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
+      }
+    }
+    
+    .congrats-text {
+      font-size: 24px;
+      font-weight: 700;
+      color: #303133;
+      margin-bottom: 8px;
+    }
+    
+    .level-title {
+      font-size: 18px;
+      font-weight: 600;
+    }
+  }
+  
+  .exp-section {
+    padding: 24px 0;
+    
+    .exp-icon {
+      color: #E6A23C;
+      margin-bottom: 12px;
+    }
+    
+    .exp-text {
+      font-size: 24px;
+      font-weight: 700;
+      color: #E6A23C;
+    }
+  }
+  
+  .badges-section {
+    margin-top: 20px;
+    padding-top: 20px;
+    border-top: 1px solid #EBEEF5;
+    
+    .section-title {
+      font-size: 14px;
+      color: #909399;
+      margin-bottom: 12px;
+    }
+    
+    .badges-list {
+      display: flex;
+      flex-wrap: wrap;
+      justify-content: center;
+      gap: 12px;
+      
+      .badge-item {
+        display: flex;
+        flex-direction: column;
+        align-items: center;
+        gap: 4px;
+        
+        .badge-icon {
+          width: 48px;
+          height: 48px;
+          border-radius: 50%;
+          background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
+          display: flex;
+          align-items: center;
+          justify-content: center;
+          color: #fff;
+        }
+        
+        .badge-name {
+          font-size: 12px;
+          color: #303133;
+          font-weight: 500;
+        }
+        
+        .badge-reward {
+          font-size: 12px;
+          color: #E6A23C;
+        }
+      }
+    }
+  }
+}
+
+@keyframes firework {
+  0% {
+    transform: scale(1);
+    opacity: 1;
+  }
+  100% {
+    transform: scale(20);
+    opacity: 0;
+  }
+}
+
+@keyframes bounce {
+  0%, 100% {
+    transform: scale(1);
+  }
+  50% {
+    transform: scale(1.1);
+  }
+}
+</style>
--- a/frontend/src/router/index.ts
+++ b/frontend/src/router/index.ts
@@ -31,6 +31,12 @@ const routes: RouteRecordRaw[] = [
        component: () => import('@/views/trainee/growth-path.vue'),
        meta: { title: '我的成长路径', icon: 'TrendCharts' }
      },
+      {
+        path: 'leaderboard',
+        name: 'Leaderboard',
+        component: () => import('@/views/trainee/leaderboard.vue'),
+        meta: { title: '等级排行榜', icon: 'Trophy' }
+      },
      {
        path: 'course-center',
        name: 'CourseCenter',
--- a/frontend/src/views/trainee/growth-path.vue
+++ b/frontend/src/views/trainee/growth-path.vue
@@ -877,12 +877,26 @@ const fetchUserInfo = async () => {
      userInfo.value = {
        name: user.full_name || user.username || '未命名',
        position: user.position_name || (user.role === 'admin' ? '管理员' : user.role === 'trainer' ? '培训师' : '学员'),
-        level: 1, // TODO: 从用户统计数据获取
-        exp: 0, // TODO: 从用户统计数据获取
-        nextLevelExp: 1000, // TODO: 从用户统计数据获取
+        level: 1,
+        exp: 0,
+        nextLevelExp: 1000,
        avatar: user.avatar_url || '',
-        role: user.role || 'trainee',  // 保存用户角色
-        phone: user.phone || ''  // 保存用户手机号
+        role: user.role || 'trainee',
+        phone: user.phone || ''
+      }
+      
+      // 获取等级信息
+      try {
+        const { getMyLevel } = await import('@/api/level')
+        const levelResponse = await getMyLevel()
+        if (levelResponse.code === 200 && levelResponse.data) {
+          const levelData = levelResponse.data
+          userInfo.value.level = levelData.level
+          userInfo.value.exp = levelData.total_exp
+          userInfo.value.nextLevelExp = levelData.next_level_exp || 1000
+        }
+      } catch (levelError) {
+        console.warn('获取等级信息失败:', levelError)
      }
    }
  } catch (error) {
--- a/frontend/src/views/trainee/leaderboard.vue
+++ b/frontend/src/views/trainee/leaderboard.vue
@@ -0,0 +1,491 @@
+<template>
+  <div class="leaderboard-page">
+    <!-- 页面标题 -->
+    <div class="page-header">
+      <h2>等级排行榜</h2>
+    </div>
+    
+    <!-- 我的排名卡片 -->
+    <div class="my-rank-card" v-if="myRank">
+      <div class="rank-badge">
+        <span class="rank-number">{{ myRank }}</span>
+        <span class="rank-label">我的排名</span>
+      </div>
+      <div class="my-info">
+        <div class="level-badge">
+          <span class="level-number">{{ myLevelInfo?.level || 1 }}</span>
+        </div>
+        <div class="my-details">
+          <div class="my-title">{{ myLevelInfo?.title || '初学者' }}</div>
+          <div class="my-exp">累计经验: {{ myLevelInfo?.total_exp || 0 }}</div>
+        </div>
+      </div>
+      <div class="checkin-section">
+        <el-button 
+          type="primary" 
+          :loading="checkinLoading"
+          :disabled="todayCheckedIn"
+          @click="handleCheckin"
+        >
+          {{ todayCheckedIn ? '今日已签' : '签到 +10' }}
+        </el-button>
+        <div class="streak-info" v-if="myLevelInfo?.login_streak">
+          已连续签到 {{ myLevelInfo.login_streak }} 天
+        </div>
+      </div>
+    </div>
+    
+    <!-- 排行榜列表 -->
+    <div class="leaderboard-list" v-loading="loading">
+      <div 
+        class="leaderboard-item" 
+        v-for="(item, index) in leaderboard" 
+        :key="item.user_id"
+        :class="{ 'is-me': item.user_id === currentUserId }"
+      >
+        <div class="rank-section">
+          <div class="rank-icon" :class="getRankClass(item.rank)">
+            <el-icon v-if="item.rank <= 3"><Trophy /></el-icon>
+            <span v-else>{{ item.rank }}</span>
+          </div>
+        </div>
+        
+        <div class="user-section">
+          <el-avatar :size="40" :src="item.avatar_url">
+            {{ (item.full_name || item.username || '').charAt(0) }}
+          </el-avatar>
+          <div class="user-info">
+            <div class="user-name">{{ item.full_name || item.username }}</div>
+            <div class="user-title" :style="{ color: item.color }">
+              Lv.{{ item.level }} {{ item.title }}
+            </div>
+          </div>
+        </div>
+        
+        <div class="stats-section">
+          <div class="stat-item">
+            <span class="stat-value">{{ item.total_exp }}</span>
+            <span class="stat-label">经验值</span>
+          </div>
+          <div class="stat-item" v-if="item.login_streak > 0">
+            <span class="stat-value">{{ item.login_streak }}</span>
+            <span class="stat-label">连续登录</span>
+          </div>
+        </div>
+      </div>
+      
+      <el-empty v-if="!loading && leaderboard.length === 0" description="暂无排行数据" />
+    </div>
+    
+    <!-- 加载更多 -->
+    <div class="load-more" v-if="hasMore">
+      <el-button text @click="loadMore" :loading="loadingMore">
+        加载更多
+      </el-button>
+    </div>
+    
+    <!-- 升级/奖章弹窗 -->
+    <LevelUpDialog
+      v-model="showLevelUpDialog"
+      :leveled-up="levelUpResult.leveledUp"
+      :new-level="levelUpResult.newLevel"
+      :level-title="levelUpResult.levelTitle"
+      :level-color="levelUpResult.levelColor"
+      :exp-gained="levelUpResult.expGained"
+      :new-badges="levelUpResult.newBadges"
+      @close="handleDialogClose"
+    />
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted, computed } from 'vue'
+import { Trophy } from '@element-plus/icons-vue'
+import { ElMessage } from 'element-plus'
+import { getLeaderboard, dailyCheckin, type LeaderboardItem, type LevelInfo, type Badge } from '@/api/level'
+import LevelUpDialog from '@/components/LevelUpDialog.vue'
+import { authManager } from '@/utils/auth'
+
+// 状态
+const loading = ref(false)
+const loadingMore = ref(false)
+const checkinLoading = ref(false)
+const leaderboard = ref<LeaderboardItem[]>([])
+const myRank = ref<number | null>(null)
+const myLevelInfo = ref<LevelInfo | null>(null)
+const total = ref(0)
+const pageSize = 20
+const currentOffset = ref(0)
+const todayCheckedIn = ref(false)
+
+// 升级弹窗状态
+const showLevelUpDialog = ref(false)
+const levelUpResult = ref({
+  leveledUp: false,
+  newLevel: null as number | null,
+  levelTitle: '',
+  levelColor: '#409EFF',
+  expGained: 0,
+  newBadges: [] as Badge[]
+})
+
+// 计算属性
+const currentUserId = computed(() => {
+  const user = authManager.getCurrentUser()
+  return user?.id || 0
+})
+
+const hasMore = computed(() => {
+  return currentOffset.value + pageSize < total.value
+})
+
+// 方法
+const getRankClass = (rank: number) => {
+  if (rank === 1) return 'gold'
+  if (rank === 2) return 'silver'
+  if (rank === 3) return 'bronze'
+  return ''
+}
+
+const fetchLeaderboard = async (append = false) => {
+  if (!append) {
+    loading.value = true
+    currentOffset.value = 0
+  } else {
+    loadingMore.value = true
+  }
+  
+  try {
+    const response = await getLeaderboard({
+      limit: pageSize,
+      offset: currentOffset.value
+    })
+    
+    if (response.code === 200 && response.data) {
+      if (append) {
+        leaderboard.value.push(...response.data.items)
+      } else {
+        leaderboard.value = response.data.items
+      }
+      total.value = response.data.total
+      myRank.value = response.data.my_rank
+      myLevelInfo.value = response.data.my_level_info
+      
+      // 检查今日是否已签到
+      if (myLevelInfo.value?.last_checkin_at) {
+        const lastCheckin = new Date(myLevelInfo.value.last_checkin_at)
+        const today = new Date()
+        todayCheckedIn.value = lastCheckin.toDateString() === today.toDateString()
+      }
+      
+      currentOffset.value = currentOffset.value + pageSize
+    }
+  } catch (error) {
+    console.error('获取排行榜失败:', error)
+    ElMessage.error('获取排行榜失败')
+  } finally {
+    loading.value = false
+    loadingMore.value = false
+  }
+}
+
+const loadMore = () => {
+  fetchLeaderboard(true)
+}
+
+const handleCheckin = async () => {
+  if (todayCheckedIn.value) return
+  
+  checkinLoading.value = true
+  try {
+    const response = await dailyCheckin()
+    
+    if (response.code === 200 && response.data) {
+      const result = response.data
+      
+      if (result.already_checked_in) {
+        todayCheckedIn.value = true
+        ElMessage.info('今天已经签到过了')
+        return
+      }
+      
+      todayCheckedIn.value = true
+      
+      // 更新本地数据
+      if (myLevelInfo.value) {
+        myLevelInfo.value.login_streak = result.login_streak
+      }
+      
+      // 显示结果弹窗
+      levelUpResult.value = {
+        leveledUp: result.leveled_up || false,
+        newLevel: result.new_level || null,
+        levelTitle: '', // 后端可以返回
+        levelColor: '#409EFF',
+        expGained: result.exp_gained,
+        newBadges: result.new_badges || []
+      }
+      showLevelUpDialog.value = true
+      
+      // 刷新排行榜数据
+      fetchLeaderboard()
+    }
+  } catch (error) {
+    console.error('签到失败:', error)
+    ElMessage.error('签到失败，请稍后重试')
+  } finally {
+    checkinLoading.value = false
+  }
+}
+
+const handleDialogClose = () => {
+  showLevelUpDialog.value = false
+}
+
+// 生命周期
+onMounted(() => {
+  fetchLeaderboard()
+})
+</script>
+
+<style scoped lang="scss">
+.leaderboard-page {
+  padding: 20px;
+  max-width: 800px;
+  margin: 0 auto;
+}
+
+.page-header {
+  margin-bottom: 24px;
+  
+  h2 {
+    font-size: 24px;
+    font-weight: 600;
+    color: #303133;
+    margin: 0;
+  }
+}
+
+.my-rank-card {
+  display: flex;
+  align-items: center;
+  gap: 24px;
+  padding: 20px 24px;
+  background: linear-gradient(135deg, #409EFF 0%, #79bbff 100%);
+  border-radius: 12px;
+  color: #fff;
+  margin-bottom: 24px;
+  
+  .rank-badge {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    
+    .rank-number {
+      font-size: 36px;
+      font-weight: 700;
+    }
+    
+    .rank-label {
+      font-size: 12px;
+      opacity: 0.8;
+    }
+  }
+  
+  .my-info {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    flex: 1;
+    
+    .level-badge {
+      width: 48px;
+      height: 48px;
+      border-radius: 50%;
+      background: rgba(255, 255, 255, 0.2);
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      
+      .level-number {
+        font-size: 20px;
+        font-weight: 700;
+      }
+    }
+    
+    .my-details {
+      .my-title {
+        font-size: 18px;
+        font-weight: 600;
+        margin-bottom: 4px;
+      }
+      
+      .my-exp {
+        font-size: 14px;
+        opacity: 0.8;
+      }
+    }
+  }
+  
+  .checkin-section {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 8px;
+    
+    .el-button {
+      background: rgba(255, 255, 255, 0.2);
+      border: 1px solid rgba(255, 255, 255, 0.3);
+      color: #fff;
+      
+      &:hover:not(:disabled) {
+        background: rgba(255, 255, 255, 0.3);
+      }
+      
+      &:disabled {
+        opacity: 0.6;
+      }
+    }
+    
+    .streak-info {
+      font-size: 12px;
+      opacity: 0.8;
+    }
+  }
+}
+
+.leaderboard-list {
+  background: #fff;
+  border-radius: 12px;
+  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
+  overflow: hidden;
+  
+  .leaderboard-item {
+    display: flex;
+    align-items: center;
+    padding: 16px 20px;
+    border-bottom: 1px solid #EBEEF5;
+    transition: background-color 0.2s;
+    
+    &:last-child {
+      border-bottom: none;
+    }
+    
+    &:hover {
+      background-color: #F5F7FA;
+    }
+    
+    &.is-me {
+      background-color: #ECF5FF;
+    }
+    
+    .rank-section {
+      width: 48px;
+      text-align: center;
+      
+      .rank-icon {
+        width: 32px;
+        height: 32px;
+        border-radius: 50%;
+        display: inline-flex;
+        align-items: center;
+        justify-content: center;
+        font-size: 14px;
+        font-weight: 600;
+        color: #909399;
+        background: #F5F7FA;
+        
+        &.gold {
+          background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
+          color: #fff;
+        }
+        
+        &.silver {
+          background: linear-gradient(135deg, #C0C0C0 0%, #A0A0A0 100%);
+          color: #fff;
+        }
+        
+        &.bronze {
+          background: linear-gradient(135deg, #CD7F32 0%, #B87333 100%);
+          color: #fff;
+        }
+      }
+    }
+    
+    .user-section {
+      display: flex;
+      align-items: center;
+      gap: 12px;
+      flex: 1;
+      min-width: 0;
+      
+      .user-info {
+        min-width: 0;
+        
+        .user-name {
+          font-size: 15px;
+          font-weight: 500;
+          color: #303133;
+          overflow: hidden;
+          text-overflow: ellipsis;
+          white-space: nowrap;
+        }
+        
+        .user-title {
+          font-size: 13px;
+          margin-top: 2px;
+        }
+      }
+    }
+    
+    .stats-section {
+      display: flex;
+      gap: 24px;
+      
+      .stat-item {
+        text-align: center;
+        
+        .stat-value {
+          display: block;
+          font-size: 16px;
+          font-weight: 600;
+          color: #303133;
+        }
+        
+        .stat-label {
+          font-size: 12px;
+          color: #909399;
+        }
+      }
+    }
+  }
+}
+
+.load-more {
+  text-align: center;
+  padding: 16px 0;
+}
+
+@media (max-width: 600px) {
+  .my-rank-card {
+    flex-direction: column;
+    text-align: center;
+    
+    .my-info {
+      flex-direction: column;
+    }
+  }
+  
+  .leaderboard-item {
+    flex-wrap: wrap;
+    
+    .stats-section {
+      width: 100%;
+      justify-content: center;
+      margin-top: 12px;
+      padding-top: 12px;
+      border-top: 1px dashed #EBEEF5;
+    }
+  }
+}
+</style>