feat(training): 握力环训练趣味化 - 捏碎特效 + 卡路里统计

## 新增功能

### 1. Canvas 粒子捏碎特效
- 新建 crush-canvas.vue 组件（透明叠加层）
- 4 种捏碎物品：鸡蛋🥚、核桃🥜、易拉罐🥫、气球🎈
- 粒子物理模拟：径向扩散 + 重力 + 空气阻力 + 生命值衰减
- 性能优化：固定 60fps 时间步长，粒子边界清理

### 2. 随机触发逻辑
- 平均每 8-12 次随机触发捏碎特效
- 在握力环压缩峰值（scale 0.65）时触发
- 随机选择 4 种物品之一
- 资源清理：训练暂停/结束时清理所有定时器

### 3. 卡路里统计与完成页面
- 标准 MET 公式计算卡路里（MET = 3.5，默认 60kg）
- 5 种食物自动匹配（苹果、鸡蛋、巧克力、香蕉、米饭）
- 完成页面显示：组数、次数、时长、卡路里、食物对比
- 样式设计：浅色清爽风格，绿色渐变卡片

### 4. 预留接口
- useTTS.ts：预留 MiMo TTS 语音鼓励接口

## 技术实现

- Canvas 粒子系统：20-30 个粒子，物理模拟流畅
- 类型安全：完整的 TypeScript 类型定义
- 性能优化：固定时间步长、边界清理、资源管理
- 响应式布局：适配不同屏幕尺寸

## 相关任务

Task: .trellis/tasks/05-27-grip-ring-gamification
PRD: prd.md
Research: research/calorie-calculation.md

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

TUICallKit-Vue3/training/hooks/useTTS.ts

@@ -0,0 +1,32 @@
+/**
+ * TTS 语音鼓励 Hook
+ * 用于在捏碎特效触发时播放语音鼓励
+ *
+ * 当前状态：预留接口，待集成 MiMo TTS
+ * TODO: 集成 MiMo TTS SDK
+ */
+
+export function useTTS() {
+    /**
+     * 播放语音鼓励
+     * 随机播放："加油"、"太棒了"、"继续"、"很好"等
+     *
+     * 实现计划：
+     * 1. 引入 MiMo TTS SDK
+     * 2. 配置语音库（鼓励短语列表）
+     * 3. 随机选择短语并播放
+     */
+    const playEncouragement = () => {
+        // TODO: 集成 MiMo TTS
+        // 示例实现：
+        // const phrases = ['加油', '太棒了', '继续', '很好', '坚持']
+        // const phrase = phrases[Math.floor(Math.random() * phrases.length)]
+        // mimoTTS.speak(phrase)
+
+        console.log('[TTS] 播放语音鼓励（待实现 MiMo TTS 集成）')
+    }
+
+    return {
+        playEncouragement
+    }
+}

TUICallKit-Vue3/training/hooks/useTrainingSession.ts

@@ -1,7 +1,11 @@
 import { ref, computed, onUnmounted } from 'vue'
+import { calculateCalories, getFoodComparison } from '../utils/calorie'
+import type { FoodComparison } from '../utils/calorie'
 
 export type SessionPhase = 'idle' | 'training' | 'resting' | 'done'
 
+export type CrushItemType = 'egg' | 'walnut' | 'can' | 'balloon'
+
 export interface TrainingSessionConfig {
     sets: number
     reps: number
@@ -13,9 +17,35 @@ export interface TrainingSessionConfig {
     onExitRest?: () => void
     onDone?: () => void
     onCountdownTick?: (remainingSec: number) => void
+    onCrushTrigger?: (itemType: CrushItemType) => void
 }
 
-export function useTrainingSession() {
+export interface TrainingStats {
+    totalSets: number
+    totalReps: number
+    durationSeconds: number
+    calories: number
+    foodComparison: FoodComparison
+}
+
+// 捏碎特效配置
+const CRUSH_TRIGGER_INTERVAL_MIN = 8  // 最小触发间隔
+const CRUSH_TRIGGER_INTERVAL_MAX = 12 // 最大触发间隔
+const CRUSH_ITEMS: CrushItemType[] = ['egg', 'walnut', 'can', 'balloon']
+
+// 随机触发判断（平均每 8-12 次触发一次）
+function shouldTriggerCrush(): boolean {
+    // 使用随机间隔的平均值：(8 + 12) / 2 = 10
+    const avgInterval = (CRUSH_TRIGGER_INTERVAL_MIN + CRUSH_TRIGGER_INTERVAL_MAX) / 2
+    return Math.random() < (1 / avgInterval)
+}
+
+// 随机选择物品
+function randomCrushItem(): CrushItemType {
+    return CRUSH_ITEMS[Math.floor(Math.random() * CRUSH_ITEMS.length)]
+}
+
+export function useTrainingSession(bpm?: number) {
     const phase = ref<SessionPhase>('idle')
     const currentSet = ref<number>(0)
     const currentRep = ref<number>(0)
@@ -24,6 +54,9 @@ export function useTrainingSession() {
 
     let config: TrainingSessionConfig | null = null
     let restTimer: ReturnType<typeof setInterval> | null = null
+    let crushTimers: ReturnType<typeof setTimeout>[] = [] // 存储所有捏碎特效的 setTimeout
+    let currentBpm = bpm ?? 80
+    let startTime = 0 // 训练开始时间戳
 
     const totalReps = computed(() => config?.reps ?? 0)
     const totalSets = computed(() => config?.sets ?? 0)
@@ -33,6 +66,10 @@ export function useTrainingSession() {
     const isResting = computed(() => phase.value === 'resting')
     const isDone = computed(() => phase.value === 'done')
 
+    const setBpm = (newBpm: number) => {
+        currentBpm = newBpm
+    }
+
     const start = (cfg: TrainingSessionConfig) => {
         config = cfg
         phase.value = 'training'
@@ -40,6 +77,27 @@ export function useTrainingSession() {
         currentRep.value = 0
         beatCounter.value = 0
         restRemainingSec.value = 0
+        startTime = Date.now() // 记录开始时间
+    }
+
+    // 获取训练统计数据
+    const getStats = (): TrainingStats => {
+        const durationSeconds = Math.floor((Date.now() - startTime) / 1000)
+        const actualTotalReps = (config?.sets ?? 0) * (config?.reps ?? 0)
+
+        const calories = calculateCalories({
+            totalReps: actualTotalReps,
+            bpm: currentBpm,
+            userWeight: 60, // 默认 60kg
+        })
+
+        return {
+            totalSets: config?.sets ?? 0,
+            totalReps: actualTotalReps,
+            durationSeconds,
+            calories,
+            foodComparison: getFoodComparison(calories),
+        }
     }
 
     const onBeat = () => {
@@ -52,6 +110,17 @@ export function useTrainingSession() {
         currentRep.value++
         config.onRepComplete?.(currentRep.value, totalReps.value)
 
+        // 随机触发捏碎特效
+        if (shouldTriggerCrush() && config.onCrushTrigger) {
+            const item = randomCrushItem()
+            // 延迟到动画峰值（50%）触发
+            const repDurationMs = (60000 / currentBpm) * beatsPerRep.value
+            const timer = setTimeout(() => {
+                config?.onCrushTrigger?.(item)
+            }, repDurationMs / 2)
+            crushTimers.push(timer)
+        }
+
         if (currentRep.value >= totalReps.value) {
             config.onSetComplete?.(currentSet.value, totalSets.value)
 
@@ -104,6 +173,10 @@ export function useTrainingSession() {
             clearInterval(restTimer)
             restTimer = null
         }
+        // 清理所有待触发的捏碎特效
+        crushTimers.forEach(timer => clearTimeout(timer))
+        crushTimers = []
+
         phase.value = 'idle'
         currentSet.value = 0
         currentRep.value = 0
@@ -113,6 +186,8 @@ export function useTrainingSession() {
 
     onUnmounted(() => {
         if (restTimer) clearInterval(restTimer)
+        crushTimers.forEach(timer => clearTimeout(timer))
+        crushTimers = []
     })
 
     return {
@@ -129,5 +204,7 @@ export function useTrainingSession() {
         stop,
         skipRest,
         onBeat,
+        setBpm,
+        getStats,
     }
 }

TUICallKit-Vue3/training/pages/components/crush-canvas.vue

@@ -0,0 +1,233 @@
+<template>
+    <view class="crush-canvas-container">
+        <canvas
+            canvas-id="crush"
+            id="crush"
+            class="crush-canvas"
+            :style="{ width: canvasSizePx + 'px', height: canvasSizePx + 'px' }"
+        ></canvas>
+    </view>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted, onBeforeUnmount, getCurrentInstance } from 'vue'
+
+// 粒子接口
+interface Particle {
+    x: number
+    y: number
+    vx: number
+    vy: number
+    size: number
+    color: string
+    life: number
+}
+
+// 捏碎物品类型
+type CrushItemType = 'egg' | 'walnut' | 'can' | 'balloon'
+
+// 捏碎物品配置
+interface CrushItemConfig {
+    emoji: string
+    color: string
+    particles: number
+}
+
+const CRUSH_ITEMS: Record<CrushItemType, CrushItemConfig> = {
+    egg: { emoji: '🥚', color: '#FFF9C4', particles: 20 },
+    walnut: { emoji: '🥜', color: '#8D6E63', particles: 25 },
+    can: { emoji: '🥫', color: '#B0BEC5', particles: 30 },
+    balloon: { emoji: '🎈', color: '#FF5252', particles: 15 }
+}
+
+// 物理参数常量
+const PHYSICS = {
+    GRAVITY: 0.3,           // 重力加速度
+    AIR_RESISTANCE: 0.98,   // 空气阻力系数
+    LIFE_DECAY: 0.015,      // 生命值衰减速度（约 67 帧 = 1.1 秒）
+    SPEED_MIN: 3,           // 最小初速度
+    SPEED_MAX: 5,           // 最大初速度
+    SIZE_MIN: 4,            // 最小粒子尺寸
+    SIZE_MAX: 8,            // 最大粒子尺寸
+    FPS: 60                 // 目标帧率
+}
+
+// Canvas 尺寸（px）
+const canvasSizePx = ref<number>(240)
+const ctx = ref<any>(null)
+const timer = ref<number | null>(null)
+const renderRunning = ref<boolean>(false)
+const particles = ref<Particle[]>([])
+
+onMounted(() => {
+    initCanvas()
+})
+
+onBeforeUnmount(() => {
+    cleanup()
+})
+
+// 初始化 Canvas
+function initCanvas() {
+    setTimeout(() => {
+        const query = uni.createSelectorQuery().in(getCurrentInstance())
+        query.select('.crush-canvas-container').boundingClientRect(data => {
+            if (data && data.width > 0) {
+                // 获取实际渲染尺寸（px）
+                canvasSizePx.value = data.width
+            }
+
+            if (!ctx.value) {
+                ctx.value = uni.createCanvasContext('crush', getCurrentInstance())
+            }
+        }).exec()
+    }, 100)
+}
+
+// 触发捏碎特效（供外部调用）
+function triggerCrush(itemType: CrushItemType) {
+    if (!ctx.value) {
+        return
+    }
+
+    const item = CRUSH_ITEMS[itemType]
+    if (!item) {
+        return
+    }
+
+    // 生成粒子
+    const centerX = canvasSizePx.value / 2
+    const centerY = canvasSizePx.value / 2
+    const particleCount = item.particles
+
+    for (let i = 0; i < particleCount; i++) {
+        // 随机角度和速度（径向扩散）
+        const angle = (Math.PI * 2 * i) / particleCount + (Math.random() - 0.5) * 0.5
+        const speed = PHYSICS.SPEED_MIN + Math.random() * (PHYSICS.SPEED_MAX - PHYSICS.SPEED_MIN)
+
+        particles.value.push({
+            x: centerX,
+            y: centerY,
+            vx: Math.cos(angle) * speed,
+            vy: Math.sin(angle) * speed,
+            size: PHYSICS.SIZE_MIN + Math.random() * (PHYSICS.SIZE_MAX - PHYSICS.SIZE_MIN),
+            color: item.color,
+            life: 1.0
+        })
+    }
+
+    ensureRenderLoop()
+}
+
+// 确保渲染循环运行
+function ensureRenderLoop() {
+    if (renderRunning.value) return
+    renderRunning.value = true
+    renderLoop()
+}
+
+// 渲染循环
+function renderLoop() {
+    // 更新粒子物理
+    for (let i = particles.value.length - 1; i >= 0; i--) {
+        const p = particles.value[i]
+
+        // 重力
+        p.vy += PHYSICS.GRAVITY
+
+        // 空气阻力
+        p.vx *= PHYSICS.AIR_RESISTANCE
+        p.vy *= PHYSICS.AIR_RESISTANCE
+
+        // 位置更新
+        p.x += p.vx
+        p.y += p.vy
+
+        // 生命值衰减
+        p.life -= PHYSICS.LIFE_DECAY
+
+        // 移除死亡粒子或飞出画布的粒子
+        const outOfBounds = p.x < -50 || p.x > canvasSizePx.value + 50 ||
+                           p.y < -50 || p.y > canvasSizePx.value + 50
+        if (p.life <= 0 || outOfBounds) {
+            particles.value.splice(i, 1)
+        }
+    }
+
+    // 绘制
+    draw()
+    ctx.value.draw(false)
+
+    // 决定是否继续渲染
+    if (particles.value.length > 0) {
+        timer.value = setTimeout(() => {
+            renderLoop()
+        }, 1000 / PHYSICS.FPS) as unknown as number
+    } else {
+        timer.value = null
+        renderRunning.value = false
+    }
+}
+
+// 绘制粒子
+function draw() {
+    const c = ctx.value
+    const size = canvasSizePx.value
+
+    // 清空画布（透明）
+    c.clearRect(0, 0, size, size)
+
+    // 绘制所有粒子
+    particles.value.forEach(p => {
+        const alpha = p.life
+        const currentSize = p.size * (0.5 + p.life * 0.5)
+
+        c.beginPath()
+        c.arc(p.x, p.y, currentSize, 0, Math.PI * 2)
+        c.fillStyle = hexToRgba(p.color, alpha)
+        c.fill()
+    })
+}
+
+// 颜色转换工具
+function hexToRgba(hex: string, alpha: number): string {
+    const r = parseInt(hex.slice(1, 3), 16)
+    const g = parseInt(hex.slice(3, 5), 16)
+    const b = parseInt(hex.slice(5, 7), 16)
+    return `rgba(${r}, ${g}, ${b}, ${alpha})`
+}
+
+// 清理资源
+function cleanup() {
+    if (timer.value) {
+        clearTimeout(timer.value)
+        timer.value = null
+    }
+    renderRunning.value = false
+    particles.value = []
+}
+
+// 暴露方法供父组件调用
+defineExpose({
+    triggerCrush
+})
+</script>
+
+<style scoped>
+.crush-canvas-container {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    pointer-events: none; /* 不阻挡点击事件 */
+    z-index: 10;
+}
+
+.crush-canvas {
+    display: block;
+    width: 100%;
+    height: 100%;
+    background: transparent;
+}
+</style>

TUICallKit-Vue3/training/pages/components/exercise-anim.vue

@@ -24,9 +24,12 @@
                 </view>
             </view>
 
-            <!-- 握力环：缩放 -->
+            <!-- 握力环：缩放 + 粒子特效 -->
-            <view v-else-if="animationType === 'grip'" class="grip-ring">
+            <view v-else-if="animationType === 'grip'" class="grip-container">
-                <view class="grip-ring-inner">{{ icon }}</view>
+                <view class="grip-ring">
+                    <view class="grip-ring-inner">{{ icon }}</view>
+                </view>
+                <CrushCanvas ref="crushCanvasRef" />
             </view>
 
             <!-- 卷腹：身体折叠 -->
@@ -38,8 +41,9 @@
 </template>
 
 <script setup lang="ts">
-import { computed } from 'vue'
+import { ref, computed } from 'vue'
 import type { AnimationType } from '../exercises'
+import CrushCanvas from './crush-canvas.vue'
 
 interface Props {
     animationType: AnimationType
@@ -62,6 +66,17 @@ const cssVars = computed(() => {
         '--anim-state': props.isPlaying ? 'running' : 'paused',
     } as Record<string, string>
 })
+
+const crushCanvasRef = ref()
+
+// 暴露捏碎特效触发方法（供外部测试）
+const triggerCrushEffect = (itemType: 'egg' | 'walnut' | 'can' | 'balloon') => {
+    crushCanvasRef.value?.triggerCrush(itemType)
+}
+
+defineExpose({
+    triggerCrushEffect
+})
 </script>
 
 <style lang="scss" scoped>
@@ -208,6 +223,12 @@ const cssVars = computed(() => {
 }
 
 /* ===== 握力环 ===== */
+.grip-container {
+    position: relative;
+    width: 240rpx;
+    height: 240rpx;
+}
+
 .grip-ring {
     width: 240rpx;
     height: 240rpx;

TUICallKit-Vue3/training/pages/index.vue

@@ -39,6 +39,7 @@
 
         <view v-if="selected" class="exercise-detail">
             <exercise-anim
+                ref="exerciseAnimRef"
                 :animation-type="selected.animationType"
                 :bpm="bpm"
                 :beats-per-rep="selected.beatsPerRep"
@@ -126,7 +127,32 @@
 
             <view v-if="isDone" class="status-card done">
                 <text class="status-title">训练完成 🎉</text>
-                <text class="status-line">共 {{ totalSets }} 组 × {{ totalReps }} 次</text>
+
+                <view v-if="trainingStats" class="completion-content">
+                    <view class="stats-grid">
+                        <view class="stat-item">
+                            <text class="stat-label">组数</text>
+                            <text class="stat-value">{{ trainingStats.totalSets }}</text>
+                        </view>
+                        <view class="stat-item">
+                            <text class="stat-label">次数</text>
+                            <text class="stat-value">{{ trainingStats.totalReps }}</text>
+                        </view>
+                        <view class="stat-item">
+                            <text class="stat-label">时长</text>
+                            <text class="stat-value">{{ formatDuration(trainingStats.durationSeconds) }}</text>
+                        </view>
+                    </view>
+
+                    <view class="calorie-card">
+                        <text class="calorie-label">消耗卡路里</text>
+                        <text class="calorie-value">{{ trainingStats.calories }} kcal</text>
+                        <text class="food-comparison">
+                            {{ trainingStats.foodComparison.message }}
+                        </text>
+                    </view>
+                </view>
+
                 <view class="action-row">
                     <button class="btn-primary" @click="onStart">再来一次</button>
                 </view>
@@ -153,8 +179,11 @@ import { EXERCISE_PRESETS, getPresetById } from './exercises'
 import type { ExercisePreset } from './exercises'
 import { useMetronome } from '../hooks/useMetronome'
 import { useTrainingSession } from '../hooks/useTrainingSession'
+import type { CrushItemType, TrainingStats } from '../hooks/useTrainingSession'
 import { useVoiceCoach } from '../hooks/useVoiceCoach'
 import { useTrainingBgm } from '../hooks/useTrainingBgm'
+import { useTTS } from '../hooks/useTTS'
+import { formatDuration } from '../utils/calorie'
 
 const equipmentList = ['哑铃', '握力环', '健身环', '徒手'] as const
 type Equipment = (typeof equipmentList)[number]
@@ -189,8 +218,11 @@ watch(
 
 const voice = useVoiceCoach()
 const bgm = useTrainingBgm()
+const tts = useTTS()
 
-const session = useTrainingSession()
+const exerciseAnimRef = ref()
+
+const session = useTrainingSession(bpm.value)
 const {
     currentSet,
     currentRep,
@@ -200,15 +232,21 @@ const {
     isTraining,
     isResting,
     isDone,
+    getStats,
 } = session
 
+const trainingStats = ref<TrainingStats | null>(null)
+
 const metronome = useMetronome({
     initialBpm: bpm.value,
     onBeat: () => session.onBeat(),
 })
 const { beatIndex, isPlaying: metronomeIsPlaying } = metronome
 
-watch(bpm, (v) => metronome.setBpm(v))
+watch(bpm, (v) => {
+    metronome.setBpm(v)
+    session.setBpm(v)
+})
 
 const onSwitchEquipment = (eq: Equipment) => {
     if (isTraining.value || isResting.value) return
@@ -234,6 +272,14 @@ const adjust = (key: 'sets' | 'reps' | 'rest', delta: number) => {
     if (key === 'rest') restSec.value = Math.max(0, Math.min(300, restSec.value + delta))
 }
 
+const onCrushTrigger = (item: CrushItemType) => {
+    // 触发粒子特效
+    exerciseAnimRef.value?.triggerCrushEffect(item)
+
+    // 播放语音鼓励
+    tts.playEncouragement()
+}
+
 const onStart = () => {
     if (!selected.value) return
     uni.setKeepScreenOn({ keepScreenOn: true })
@@ -267,7 +313,10 @@ const onStart = () => {
             bgm.switchTo('none')
             voice.speakPrompt('good-job')
             uni.setKeepScreenOn({ keepScreenOn: false })
+            // 获取训练统计数据
+            trainingStats.value = getStats()
         },
+        onCrushTrigger: onCrushTrigger,
     })
 
     bgm.switchTo('training')
@@ -563,6 +612,7 @@ onUnmounted(() => {
     }
     &.done {
         background: linear-gradient(135deg, #dbeafe, #ede9fe);
+        gap: 24rpx;
     }
 
     .status-title {
@@ -581,6 +631,71 @@ onUnmounted(() => {
     }
 }
 
+.completion-content {
+    width: 100%;
+    display: flex;
+    flex-direction: column;
+    gap: 20rpx;
+}
+
+.stats-grid {
+    display: flex;
+    gap: 16rpx;
+    width: 100%;
+}
+
+.stat-item {
+    flex: 1;
+    background: #f8fafc;
+    border-radius: 16rpx;
+    padding: 20rpx 12rpx;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 8rpx;
+}
+
+.stat-label {
+    font-size: 24rpx;
+    color: #64748b;
+}
+
+.stat-value {
+    font-size: 32rpx;
+    font-weight: 700;
+    color: #0f172a;
+}
+
+.calorie-card {
+    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
+    border-radius: 16rpx;
+    padding: 24rpx;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 8rpx;
+    width: 100%;
+}
+
+.calorie-label {
+    font-size: 24rpx;
+    color: #065f46;
+    font-weight: 500;
+}
+
+.calorie-value {
+    font-size: 48rpx;
+    font-weight: 800;
+    color: #047857;
+    line-height: 1.2;
+}
+
+.food-comparison {
+    font-size: 24rpx;
+    color: #065f46;
+    margin-top: 4rpx;
+}
+
 .tips-card {
     background: #fff;
     border-radius: 20rpx;

TUICallKit-Vue3/training/utils/calorie.ts

@@ -0,0 +1,115 @@
+/**
+ * 卡路里计算工具
+ * 基于标准 MET (Metabolic Equivalent of Task) 公式
+ */
+
+export interface FoodItem {
+    name: string
+    emoji: string
+    calories: number
+    unit: string
+}
+
+export interface FoodComparison {
+    food: FoodItem
+    ratio: number
+    message: string
+}
+
+export interface CalorieCalculationConfig {
+    totalReps: number
+    bpm: number
+    userWeight?: number // 默认 60kg
+}
+
+// 食物卡路里数据库
+export const FOOD_CALORIES: Record<string, FoodItem> = {
+    apple: { name: '苹果', emoji: '🍎', calories: 52, unit: '个（100g）' },
+    egg: { name: '鸡蛋', emoji: '🥚', calories: 70, unit: '个' },
+    chocolate: { name: '巧克力', emoji: '🍫', calories: 54, unit: '块（10g）' },
+    banana: { name: '香蕉', emoji: '🍌', calories: 89, unit: '根' },
+    rice: { name: '米饭', emoji: '🍚', calories: 116, unit: '碗（100g）' },
+}
+
+/**
+ * 计算卡路里消耗
+ * 公式：卡路里 = MET × 体重(kg) × 时长(小时)
+ *
+ * @param config 计算配置
+ * @returns 卡路里消耗（kcal，保留一位小数）
+ */
+export function calculateCalories(config: CalorieCalculationConfig): number {
+    const MET = 3.5 // 握力环训练的标准 MET 值
+    const weight = config.userWeight || 60 // 默认 60kg
+
+    // 边界情况：无效输入
+    if (config.totalReps <= 0 || config.bpm <= 0) {
+        return 0
+    }
+
+    const secondsPerRep = 60 / config.bpm
+    const activeTimeHours = (config.totalReps * secondsPerRep) / 3600
+
+    const calories = MET * weight * activeTimeHours
+    return Math.round(calories * 10) / 10 // 保留一位小数
+}
+
+/**
+ * 自动匹配最接近的食物对比
+ *
+ * @param burnedCalories 消耗的卡路里
+ * @returns 食物对比信息
+ */
+export function getFoodComparison(burnedCalories: number): FoodComparison {
+    const foods = Object.values(FOOD_CALORIES)
+
+    // 边界情况：食物数据库为空
+    if (foods.length === 0) {
+        throw new Error('食物数据库为空')
+    }
+
+    // 边界情况：卡路里为 0 或负数
+    if (burnedCalories <= 0) {
+        return {
+            food: foods[0],
+            ratio: 0,
+            message: `暂无消耗`,
+        }
+    }
+
+    // 找到卡路里最接近的食物
+    const closest = foods.reduce((prev, curr) => {
+        const prevDiff = Math.abs(prev.calories - burnedCalories)
+        const currDiff = Math.abs(curr.calories - burnedCalories)
+        return currDiff < prevDiff ? curr : prev
+    })
+
+    const ratio = burnedCalories / closest.calories
+    const ratioRounded = Math.round(ratio * 100) / 100 // 保留两位小数
+
+    // 格式化显示：ratio < 1 时显示分数形式更直观
+    let displayText: string
+    if (ratioRounded < 1) {
+        displayText = `相当于 ${ratioRounded.toFixed(2)} 个${closest.name} ${closest.emoji}`
+    } else {
+        displayText = `相当于 ${ratioRounded.toFixed(2)} ${closest.unit}${closest.name} ${closest.emoji}`
+    }
+
+    return {
+        food: closest,
+        ratio: ratioRounded,
+        message: displayText,
+    }
+}
+
+/**
+ * 格式化时长（秒 → 分:秒）
+ *
+ * @param seconds 秒数
+ * @returns 格式化字符串（如 "3:45"）
+ */
+export function formatDuration(seconds: number): string {
+    const mins = Math.floor(seconds / 60)
+    const secs = seconds % 60
+    return `${mins}:${secs.toString().padStart(2, '0')}`
+}