diff --git a/backend/app/main.py b/backend/app/main.py
index 4e43585..6a33967 100644
--- a/backend/app/main.py
+++ b/backend/app/main.py
@@ -64,7 +64,7 @@ app.add_middleware(
 app.mount("/uploads", StaticFiles(directory=settings.UPLOAD_DIR), name="uploads")
 
 # 注册路由
-from app.routers import auth, users, conversations, messages, friends, admin, uploads, moments, leaves, trees, capsules, echoes, sync, climates, flash
+from app.routers import auth, users, conversations, messages, friends, admin, uploads, moments, leaves, trees, capsules, echoes, sync, climates, flash, garden
 
 app.include_router(auth.router, prefix="/api/v1/auth", tags=["认证"])
 app.include_router(users.router, prefix="/api/v1/users", tags=["用户"])
@@ -81,6 +81,7 @@ app.include_router(echoes.router, prefix="/api/v1/echoes", tags=["念念回音"]
 app.include_router(sync.router, prefix="/api/v1/sync", tags=["默契种子"])
 app.include_router(climates.router, prefix="/api/v1/climates", tags=["聊天气候"])
 app.include_router(flash.router, prefix="/api/v1/flash", tags=["萤火虫时刻"])
+app.include_router(garden.router, prefix="/api/v1/garden", tags=["花园状态"])
 
 # WebSocket
 from app.websocket.router import websocket_router
diff --git a/backend/app/models/__init__.py b/backend/app/models/__init__.py
index a43905a..42a7a2b 100644
--- a/backend/app/models/__init__.py
+++ b/backend/app/models/__init__.py
@@ -15,6 +15,7 @@ from app.models.miss_echo import MissEcho
 from app.models.sync_seed import SyncQuestion, SyncSeed
 from app.models.chat_climate import ChatClimate
 from app.models.flash_event import FlashEvent, FlashParticipation
+from app.models.user_streak import UserStreak
 
 __all__ = [
     "User",
@@ -36,4 +37,5 @@ __all__ = [
     "ChatClimate",
     "FlashEvent",
     "FlashParticipation",
+    "UserStreak",
 ]
diff --git a/backend/app/models/user_streak.py b/backend/app/models/user_streak.py
new file mode 100644
index 0000000..6122d30
--- /dev/null
+++ b/backend/app/models/user_streak.py
@@ -0,0 +1,22 @@
+"""用户每日签到/连续天数模型"""
+
+from datetime import date, datetime
+
+from sqlalchemy import String, Integer, Date, DateTime, ForeignKey
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.database import Base
+
+
+class UserStreak(Base):
+    __tablename__ = "user_streaks"
+
+    user_id: Mapped[str] = mapped_column(String(36), ForeignKey("users.id", ondelete="CASCADE"), primary_key=True)
+    streak: Mapped[int] = mapped_column(Integer, default=0)  # 连续打开天数
+    last_open_date: Mapped[date | None] = mapped_column(Date, nullable=True)
+    total_days: Mapped[int] = mapped_column(Integer, default=0)  # 累计打开天数
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime, default=lambda: datetime.utcnow(), onupdate=lambda: datetime.utcnow()
+    )
+
+    user = relationship("User", foreign_keys=[user_id])
diff --git a/backend/app/routers/garden.py b/backend/app/routers/garden.py
new file mode 100644
index 0000000..9c3f93d
--- /dev/null
+++ b/backend/app/routers/garden.py
@@ -0,0 +1,20 @@
+"""花园综合状态路由"""
+
+from fastapi import APIRouter, Depends
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.dependencies import get_db, get_current_user
+from app.models.user import User
+from app.services.daily_service import DailyService
+
+router = APIRouter()
+
+
+@router.get("/daily-status")
+async def daily_status(
+    user: User = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    """今日花园状态：连续天数 + 口渴的树"""
+    service = DailyService(db)
+    return await service.get_daily_status(user.id)
diff --git a/backend/app/services/daily_service.py b/backend/app/services/daily_service.py
new file mode 100644
index 0000000..5ef5abf
--- /dev/null
+++ b/backend/app/services/daily_service.py
@@ -0,0 +1,80 @@
+"""每日花园状态服务：连续天数 + 树渴了提醒"""
+
+from datetime import date, datetime, timedelta
+
+from sqlalchemy import select, or_
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.user_streak import UserStreak
+from app.models.friendship_tree import FriendshipTree
+from app.models.friend import Friend
+from app.models.user import User
+
+
+class DailyService:
+    def __init__(self, db: AsyncSession):
+        self.db = db
+
+    async def get_daily_status(self, user_id: str) -> dict:
+        """获取/更新今日花园状态"""
+        today = date.today()
+        result = await self.db.execute(
+            select(UserStreak).where(UserStreak.user_id == user_id)
+        )
+        streak_row = result.scalars().first()
+
+        is_new_day_open = False
+        if not streak_row:
+            streak_row = UserStreak(
+                user_id=user_id, streak=1, last_open_date=today, total_days=1,
+            )
+            self.db.add(streak_row)
+            is_new_day_open = True
+        elif streak_row.last_open_date != today:
+            # 计算连续天数
+            if streak_row.last_open_date == today - timedelta(days=1):
+                streak_row.streak += 1  # 连续
+            else:
+                streak_row.streak = 1  # 断了，重新计数
+            streak_row.last_open_date = today
+            streak_row.total_days += 1
+            is_new_day_open = True
+        await self.db.flush()
+
+        # 找口渴的树（24 小时没浇水的）
+        thirsty_trees = await self._get_thirsty_trees(user_id)
+
+        return {
+            "streak": streak_row.streak,
+            "total_days": streak_row.total_days,
+            "is_new_day_open": is_new_day_open,
+            "thirsty_count": len(thirsty_trees),
+            "thirsty_trees": thirsty_trees[:3],  # 最多提示 3 棵
+        }
+
+    async def _get_thirsty_trees(self, user_id: str) -> list[dict]:
+        """获取口渴的好友之树（24h 未浇水）"""
+        cutoff = datetime.utcnow() - timedelta(hours=24)
+        # 查该用户参与的所有树
+        result = await self.db.execute(
+            select(FriendshipTree).where(
+                or_(
+                    FriendshipTree.user_a_id == user_id,
+                    FriendshipTree.user_b_id == user_id,
+                )
+            )
+        )
+        thirsty = []
+        for tree in result.scalars().all():
+            if tree.last_watered_at is None or tree.last_watered_at < cutoff:
+                friend_id = tree.user_b_id if tree.user_a_id == user_id else tree.user_a_id
+                # 取好友信息
+                fr = await self.db.execute(select(User).where(User.id == friend_id))
+                friend = fr.scalars().first()
+                if friend:
+                    thirsty.append({
+                        "friend_id": friend_id,
+                        "friend_name": friend.nickname or friend.username,
+                        "hours_since": int((datetime.utcnow() - (tree.last_watered_at or tree.created_at)).total_seconds() / 3600),
+                    })
+        return thirsty
diff --git a/frontend/src/api/garden.ts b/frontend/src/api/garden.ts
new file mode 100644
index 0000000..dc3c7c9
--- /dev/null
+++ b/frontend/src/api/garden.ts
@@ -0,0 +1,5 @@
+import api from './client'
+
+export const gardenApi = {
+  getDailyStatus: () => api.get('/garden/daily-status'),
+}
diff --git a/frontend/src/utils/shareCard.ts b/frontend/src/utils/shareCard.ts
new file mode 100644
index 0000000..a0c79a2
--- /dev/null
+++ b/frontend/src/utils/shareCard.ts
@@ -0,0 +1,140 @@
+/**
+ * 生成好友之树分享图（Canvas 绘制，可下载发到微信朋友圈）
+ */
+
+export interface ShareTreeData {
+  friendName: string
+  myName: string
+  stageIndex: number
+  stageName: string
+  stageEmoji: string
+  messageCount: number
+  waterCount: number
+  totalScore: number
+  hue: number
+}
+
+function hsl(h: number, s: number, l: number): string {
+  return `hsl(${h}, ${s}%, ${l}%)`
+}
+
+/** 把树画到 canvas 上 */
+function drawTree(ctx: CanvasRenderingContext2D, cx: number, baseY: number, stageIndex: number, hue: number) {
+  if (stageIndex === 0) {
+    // 种子
+    ctx.fillStyle = hsl(25, 45, 40)
+    ctx.beginPath()
+    ctx.ellipse(cx, baseY, 14, 10, 0, 0, Math.PI * 2)
+    ctx.fill()
+    return
+  }
+  const trunkW = 4 + stageIndex * 2.2
+  const canopyR = 22 + stageIndex * 9
+  const canopyN = 3 + stageIndex
+
+  // 树干
+  ctx.fillStyle = hsl(25, 45, 35 + stageIndex * 2)
+  ctx.fillRect(cx - trunkW / 2, baseY - 90, trunkW, 90)
+
+  // 树冠（多个圆叠加）
+  ctx.fillStyle = hsl(hue, 55, 42)
+  ctx.beginPath()
+  ctx.arc(cx, baseY - 100, canopyR, 0, Math.PI * 2)
+  ctx.fill()
+  for (let i = 1; i < canopyN; i++) {
+    const offset = i % 2 === 1 ? 1 : -1
+    const layer = Math.ceil(i / 2)
+    ctx.fillStyle = hsl(hue, 55, 42 + (i % 2) * 6)
+    ctx.beginPath()
+    ctx.arc(
+      cx + offset * canopyR * 0.6 * layer,
+      baseY - 100 + layer * canopyR * 0.3,
+      canopyR * (0.75 - layer * 0.1),
+      0, Math.PI * 2
+    )
+    ctx.fill()
+  }
+  // 高光
+  ctx.fillStyle = hsl(hue, 60, 60)
+  ctx.globalAlpha = 0.3
+  ctx.beginPath()
+  ctx.arc(cx - canopyR * 0.3, baseY - 100 - canopyR * 0.3, canopyR * 0.3, 0, Math.PI * 2)
+  ctx.fill()
+  ctx.globalAlpha = 1
+}
+
+/** 生成完整分享卡片，返回 dataURL */
+export function generateTreeShareCard(data: ShareTreeData): string {
+  const W = 600, H = 800
+  const canvas = document.createElement('canvas')
+  canvas.width = W
+  canvas.height = H
+  const ctx = canvas.getContext('2d')!
+
+  // 背景渐变
+  const bg = ctx.createLinearGradient(0, 0, 0, H)
+  bg.addColorStop(0, '#E8F5E9')
+  bg.addColorStop(0.5, '#C8E6C9')
+  bg.addColorStop(1, '#A5D6A7')
+  ctx.fillStyle = bg
+  ctx.fillRect(0, 0, W, H)
+
+  // 顶部光晕
+  const glow = ctx.createRadialGradient(W / 2, 200, 0, W / 2, 200, 300)
+  glow.addColorStop(0, 'rgba(255,255,255,0.5)')
+  glow.addColorStop(1, 'rgba(255,255,255,0)')
+  ctx.fillStyle = glow
+  ctx.fillRect(0, 0, W, 400)
+
+  // logo + 标题
+  ctx.fillStyle = '#004D40'
+  ctx.font = 'bold 28px -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif'
+  ctx.textAlign = 'center'
+  ctx.fillText('🌿 我们在青叶种了一棵树', W / 2, 70)
+
+  // 名字
+  ctx.font = '20px -apple-system, "PingFang SC", sans-serif'
+  ctx.fillStyle = '#00695C'
+  ctx.fillText(`${data.myName}  ×  ${data.friendName}`, W / 2, 105)
+
+  // 地面
+  ctx.fillStyle = 'rgba(139,90,43,0.15)'
+  ctx.beginPath()
+  ctx.ellipse(W / 2, 560, 140, 16, 0, 0, Math.PI * 2)
+  ctx.fill()
+
+  // 画树
+  drawTree(ctx, W / 2, 560, data.stageIndex, data.hue)
+
+  // 阶段标签
+  ctx.font = 'bold 22px sans-serif'
+  ctx.fillStyle = '#00796B'
+  ctx.fillText(`${data.stageEmoji} ${data.stageName}  Lv.${data.stageIndex + 1}`, W / 2, 620)
+
+  // 统计三栏
+  const stats = [
+    { label: '条消息', value: data.messageCount },
+    { label: '次浇水', value: data.waterCount },
+    { label: '成长值', value: data.totalScore },
+  ]
+  const statY = 670
+  stats.forEach((s, i) => {
+    const x = W / 4 + (W / 4) * i - 30
+    ctx.fillStyle = '#009688'
+    ctx.font = 'bold 26px sans-serif'
+    ctx.fillText(String(s.value), x, statY)
+    ctx.fillStyle = '#5F7A74'
+    ctx.font = '13px sans-serif'
+    ctx.fillText(s.label, x, statY + 22)
+  })
+
+  // 底部邀请
+  ctx.fillStyle = '#004D40'
+  ctx.font = '15px sans-serif'
+  ctx.fillText('来青叶，和你在意的人一起种树', W / 2, 745)
+  ctx.font = '12px sans-serif'
+  ctx.fillStyle = '#5F7A74'
+  ctx.fillText('微信给不了你的，是一片会生长的关系', W / 2, 770)
+
+  return canvas.toDataURL('image/png')
+}
diff --git a/frontend/src/views/chat/ChatListView.vue b/frontend/src/views/chat/ChatListView.vue
index 7f2e69f..88b6f5b 100644
--- a/frontend/src/views/chat/ChatListView.vue
+++ b/frontend/src/views/chat/ChatListView.vue
@@ -1,7 +1,61 @@
 <template>
   <div class="welcome-panel">
     <div class="welcome-bg"></div>
-    <div class="welcome-content">
+
+    <!-- 空状态：邀请你最重要的人 -->
+    <div v-if="isEmpty" class="onboarding-content">
+      <div class="seed-illustration">
+        <div class="seed-glow"></div>
+        <div class="seed-emoji">🌱</div>
+      </div>
+      <h1 class="onb-title">种下你们的第一棵树</h1>
+      <p class="onb-subtitle">青叶不是又一个微信。<br>这里是为你<strong>最重要的那几个人</strong>准备的花园。</p>
+
+      <!-- 价值主张 -->
+      <div class="value-props">
+        <div class="vp-item">
+          <span class="vp-icon">🌳</span>
+          <span class="vp-text">你们的友谊会长成一棵树</span>
+        </div>
+        <div class="vp-item">
+          <span class="vp-icon">🍃</span>
+          <span class="vp-text">想念 TA，就寄一片回音叶</span>
+        </div>
+        <div class="vp-item">
+          <span class="vp-icon">💓</span>
+          <span class="vp-text">深夜里，叶子陪你们同步呼吸</span>
+        </div>
+      </div>
+
+      <!-- 邀请那一个人 -->
+      <div class="invite-box">
+        <p class="invite-label">第一步：邀请最重要的那个人</p>
+        <div class="invite-text">{{ inviteText }}</div>
+        <div class="invite-actions">
+          <n-button type="primary" round @click="copyInvite">📋 复制邀请</n-button>
+          <n-button quaternary round @click="$router.push('/contacts/search')">我已经有好友了</n-button>
+        </div>
+      </div>
+    </div>
+
+    <!-- 有内容时的欢迎页 -->
+    <div v-else class="welcome-content">
+      <!-- 今日花园状态（每日召回） -->
+      <div v-if="daily" class="daily-banner" @click="$router.push('/garden/tree')">
+        <div class="daily-streak">
+          <span class="streak-fire">🔥</span>
+          <div>
+            <span class="streak-num">{{ daily.streak }}</span>
+            <span class="streak-label">天连续</span>
+          </div>
+        </div>
+        <div v-if="daily.thirsty_count > 0" class="daily-thirsty">
+          <span class="thirsty-icon">💧</span>
+          <span>{{ daily.thirsty_count }} 棵树渴了，去浇水</span>
+        </div>
+        <div v-else class="daily-ok">今日花园已照料 🌿</div>
+      </div>
+
       <div class="welcome-header">
         <div class="logo-circle">🌿</div>
         <h1 class="app-name">青叶</h1>
@@ -55,9 +109,9 @@
           <span class="action-icon">🌿</span>
           <span class="action-text">朋友圈</span>
         </div>
-        <div class="action-card" @click="$router.push('/settings')">
-          <span class="action-icon">⚙️</span>
-          <span class="action-text">设置</span>
+        <div class="action-card" @click="$router.push('/garden')">
+          <span class="action-icon">✨</span>
+          <span class="action-text">花园</span>
         </div>
       </div>
     </div>
@@ -67,12 +121,18 @@
 
 <script setup lang="ts">
 import { ref, computed, onMounted } from 'vue'
+import { useMessage } from 'naive-ui'
 import { useChatStore } from '@/stores/chat'
+import { useAuthStore } from '@/stores/auth'
 import { friendsApi } from '@/api/friends'
+import { gardenApi } from '@/api/garden'
 import CreateGroupModal from './CreateGroupModal.vue'
 
 const chatStore = useChatStore()
+const auth = useAuthStore()
+const message = useMessage()
 const friendCount = ref(0)
+const daily = ref<any>(null)
 const showCreateGroup = ref(false)
 
 const totalUnread = computed(() =>
@@ -83,25 +143,85 @@ const recentConversations = computed(() =>
   chatStore.conversations.slice(0, 3)
 )
 
+// 空状态：既无会话又无好友 → 显示邀请引导
+const isEmpty = computed(() =>
+  chatStore.conversations.length === 0 && friendCount.value === 0
+)
+
+const inviteText = computed(() => {
+  const name = auth.user?.nickname || auth.user?.username || '我'
+  return `嘿，我在用一个叫「青叶」的 app——它不是聊天软件，是一座花园。我们的友谊在里面会长成一棵树，想念你时我能寄一片叶子。来注册陪我种树吧：${window.location.origin}/register`
+})
+
 function avatarStyle(conv: any) {
   const colors = ['#009688', '#26A69A', '#00796B', '#00897B', '#4DB6AC']
   const idx = (conv.name || '').charCodeAt(0) % colors.length
   return { background: colors[idx] }
 }
 
+async function copyInvite() {
+  try {
+    await navigator.clipboard.writeText(inviteText.value)
+    message.success('邀请已复制，去微信/qq 粘贴给那个最重要的人吧')
+  } catch {
+    message.info(inviteText.value)
+  }
+}
+
 onMounted(async () => {
   try {
     const { data } = await friendsApi.getFriends()
     friendCount.value = Array.isArray(data) ? data.length : 0
   } catch {}
+  try {
+    const { data } = await gardenApi.getDailyStatus()
+    daily.value = data
+  } catch {}
 })
 </script>
 
 <style scoped>
 .welcome-panel {
   flex: 1; display: flex; align-items: center; justify-content: center;
-  position: relative; overflow: hidden;
+  position: relative; overflow: auto; padding: 20px;
 }
+
+/* 空状态：邀请引导 */
+.onboarding-content {
+  position: relative; width: 420px; max-width: 100%; text-align: center;
+  animation: fadeUp 0.6s ease;
+}
+.seed-illustration { position: relative; width: 96px; height: 96px; margin: 0 auto 16px; }
+.seed-glow {
+  position: absolute; inset: -20px; border-radius: 50%;
+  background: radial-gradient(circle, rgba(0,200,150,0.35) 0%, transparent 70%);
+  animation: seed-pulse 2.5s ease-in-out infinite;
+}
+@keyframes seed-pulse { 0%,100% { transform: scale(0.9); opacity: 0.6; } 50% { transform: scale(1.1); opacity: 1; } }
+.seed-emoji { position: relative; font-size: 64px; line-height: 96px; }
+.onb-title { font-size: 24px; font-weight: 700; color: var(--color-primary-darker); margin: 0 0 8px; }
+.onb-subtitle { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; margin: 0 0 24px; }
+.onb-subtitle strong { color: var(--color-primary); }
+
+.value-props { display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; text-align: left; }
+.vp-item {
+  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
+  background: var(--color-surface); border-radius: 12px; border: 1px solid var(--color-border);
+}
+.vp-icon { font-size: 24px; }
+.vp-text { font-size: 14px; color: var(--color-text-primary); }
+
+.invite-box {
+  background: linear-gradient(135deg, var(--color-primary-lightest), var(--color-surface));
+  border: 1px solid var(--color-primary-lighter); border-radius: 16px; padding: 20px;
+}
+.invite-label { font-size: 13px; color: var(--color-primary); font-weight: 600; margin: 0 0 10px; }
+.invite-text {
+  font-size: 12px; color: var(--color-text-secondary); line-height: 1.6; text-align: left;
+  background: var(--color-surface); padding: 10px 12px; border-radius: 8px; margin-bottom: 12px;
+  border: 1px solid var(--color-border);
+}
+.invite-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
 .welcome-bg {
   position: absolute; inset: 0;
   background: radial-gradient(ellipse at 30% 20%, rgba(0,150,136,0.08) 0%, transparent 50%),
@@ -117,6 +237,27 @@ onMounted(async () => {
 }
 
 .welcome-header { margin-bottom: 32px; }
+
+/* 今日花园状态横幅 */
+.daily-banner {
+  display: flex; align-items: center; gap: 16px; padding: 14px 18px; margin-bottom: 24px;
+  background: linear-gradient(135deg, var(--color-surface), var(--color-primary-lightest));
+  border: 1px solid var(--color-primary-lighter); border-radius: 14px; cursor: pointer;
+  transition: transform 0.2s;
+}
+.daily-banner:hover { transform: translateY(-2px); }
+.daily-streak { display: flex; align-items: center; gap: 10px; }
+.streak-fire { font-size: 28px; animation: flicker 1.5s ease-in-out infinite; }
+@keyframes flicker { 0%,100% { transform: scale(1); } 50% { transform: scale(1.15); } }
+.streak-num { font-size: 22px; font-weight: 800; color: var(--color-primary); }
+.streak-label { font-size: 12px; color: var(--color-text-hint); margin-left: 4px; }
+.daily-thirsty {
+  display: flex; align-items: center; gap: 6px; margin-left: auto;
+  font-size: 13px; color: #FF9800; font-weight: 500;
+}
+.thirsty-icon { font-size: 18px; animation: drip 1.8s ease-in-out infinite; }
+@keyframes drip { 0%,100% { transform: translateY(0); } 50% { transform: translateY(3px); } }
+.daily-ok { margin-left: auto; font-size: 13px; color: var(--color-success); }
 .logo-circle {
   width: 72px; height: 72px; border-radius: 50%;
   background: linear-gradient(135deg, #009688, #26A69A);
diff --git a/frontend/src/views/chat/ChatRoomView.vue b/frontend/src/views/chat/ChatRoomView.vue
index 9c737bb..7335b04 100644
--- a/frontend/src/views/chat/ChatRoomView.vue
+++ b/frontend/src/views/chat/ChatRoomView.vue
@@ -54,6 +54,20 @@
     </div>
 
     <div class="chat-body">
+      <!-- 关系花园背景：私聊时，你们的树在背景里轻轻呼吸 -->
+      <div v-if="convDetail?.type === 'private' && gardenBg" class="garden-bg">
+        <svg class="bg-tree" viewBox="0 0 200 220" preserveAspectRatio="xMidYMax meet">
+          <template v-if="gardenBg.stage_index > 0">
+            <rect :x="100 - bgStyle.trunkWidth/2" y="140" :width="bgStyle.trunkWidth" height="65" :fill="treeTrunkColor(bgStyle)" rx="2" opacity="0.18" />
+            <g v-for="(p, i) in canopyPositions(bgStyle, 100, 100)" :key="i">
+              <circle :cx="p.cx" :cy="p.cy" :r="p.r" :fill="treeCanopyColor(bgStyle, i%2?5:-3)" opacity="0.14" />
+            </g>
+          </template>
+          <ellipse v-else cx="100" cy="200" rx="10" ry="7" :fill="treeTrunkColor(bgStyle)" opacity="0.18" />
+        </svg>
+        <div class="bg-glow" :style="{ animationDuration: bgBreathMs + 'ms' }"></div>
+      </div>
+
       <div class="message-list" ref="messageListRef" @contextmenu.prevent @scroll="onScroll">
         <!-- 加载更多指示器 -->
         <div v-if="chatStore.isLoadingMore" class="load-more-indicator">
@@ -184,6 +198,10 @@ import { useUiStore } from '@/stores/ui'
 import { useWebSocket } from '@/composables/useWebSocket'
 import { chatApi } from '@/api/chat'
 import { climatesApi } from '@/api/climates'
+import { treesApi } from '@/api/trees'
+import {
+  generateTreeStyle, treeTrunkColor, treeCanopyColor, canopyPositions,
+} from '@/utils/treeGenerator'
 import api from '@/api/client'
 import GroupInfoPanel from './GroupInfoPanel.vue'
 import dayjs from 'dayjs'
@@ -218,8 +236,20 @@ const forwardSender = ref('')
 const climate = ref<any>(null)
 const calendar = ref<any[]>([])
 const showCalendar = ref(false)
+const gardenBg = ref<any>(null)  // 关系花园背景：好友之树数据
 const emojis = EMOJIS
 
+const bgStyle = computed(() => gardenBg.value
+  ? generateTreeStyle(gardenBg.value.stage_index, gardenBg.value.seed, gardenBg.value.water_count)
+  : generateTreeStyle(0, '0000', 0))
+
+// 呼吸周期：BPM 越高（越亲密）呼吸越快，60-90s
+const bgBreathMs = computed(() => {
+  const score = gardenBg.value?.total_score || 0
+  const bpm = Math.min(75, 50 + score / 10)
+  return Math.round(60000 / bpm)
+})
+
 const SEASON_LABEL: Record<string, string> = {
   spring: '春', summer: '夏', autumn: '秋', winter: '冬',
 }
@@ -268,6 +298,7 @@ onMounted(async () => {
     scrollToBottom()
     markRead()
     loadClimate(id)
+    loadGardenBg()
   }
   document.addEventListener('click', closeCtxMenu)
 })
@@ -302,6 +333,17 @@ async function loadClimate(id: string) {
   } catch {}
 }
 
+async function loadGardenBg() {
+  // 私聊时加载关系之树作为背景
+  if (convDetail.value?.type !== 'private') return
+  const other = convDetail.value.members?.find((m: any) => m.user_id !== auth.user?.id)
+  if (!other) return
+  try {
+    const { data } = await treesApi.getTree(other.user_id)
+    gardenBg.value = data
+  } catch {}
+}
+
 function markRead() {
   const msgs = chatStore.currentMessages
   if (msgs.length > 0 && chatStore.activeConversation) {
@@ -568,7 +610,23 @@ function formatTimeDivider(time: string) {
 .cal-empty { grid-column: 1 / -1; text-align: center; font-size: 12px; color: var(--color-text-hint); padding: 12px; }
 
 .chat-body { flex: 1; display: flex; overflow: hidden; position: relative; }
-.message-list { flex: 1; overflow-y: auto; padding: 16px 20px; }
+.message-list { flex: 1; overflow-y: auto; padding: 16px 20px; position: relative; z-index: 1; }
+
+/* 关系花园背景 */
+.garden-bg {
+  position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 0;
+}
+.bg-tree {
+  position: absolute; bottom: -20px; right: -30px; width: 320px; height: 352px; opacity: 0.5;
+  animation: bg-sway 6s ease-in-out infinite; transform-origin: 50% 100%;
+}
+@keyframes bg-sway { 0%,100% { transform: rotate(-1deg); } 50% { transform: rotate(1deg); } }
+.bg-glow {
+  position: absolute; bottom: 10%; right: 5%; width: 280px; height: 280px; border-radius: 50%;
+  background: radial-gradient(circle, rgba(0,200,150,0.12) 0%, transparent 65%);
+  animation: bg-breathe ease-in-out infinite;
+}
+@keyframes bg-breathe { 0%,100% { transform: scale(0.85); opacity: 0.6; } 50% { transform: scale(1.05); opacity: 1; } }
 
 /* Load more indicator */
 .load-more-indicator { display: flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 0; color: var(--color-text-hint); font-size: 13px; }
diff --git a/frontend/src/views/garden/TreeView.vue b/frontend/src/views/garden/TreeView.vue
index 2c6c1c4..0d56beb 100644
--- a/frontend/src/views/garden/TreeView.vue
+++ b/frontend/src/views/garden/TreeView.vue
@@ -88,11 +88,31 @@
         </div>
         <div v-else class="max-stage">已达最高阶段，这是一棵参天古树 🎉</div>
 
-        <!-- 浇水按钮 -->
-        <n-button type="primary" size="large" round :loading="watering" @click="doWater"
-          style="margin-top: 16px">
-          💧 给 {{ currentTree.friend_name }} 的树浇水
-        </n-button>
+        <!-- 浇水 + 分享按钮 -->
+        <div class="action-row">
+          <n-button type="primary" size="large" round :loading="watering" @click="doWater">
+            💧 浇水
+          </n-button>
+          <n-button size="large" round quaternary @click="generateShare">
+            📸 分享我们的树
+          </n-button>
+        </div>
+      </div>
+    </div>
+
+    <!-- 分享图预览 -->
+    <div v-if="shareImg" class="modal-overlay" @click.self="shareImg = null">
+      <div class="share-modal">
+        <div class="share-header">
+          <h3>📸 长按保存，发到朋友圈</h3>
+          <span class="close-btn" @click="shareImg = null">✕</span>
+        </div>
+        <img :src="shareImg" class="share-preview" alt="分享图" />
+        <p class="share-tip">长按图片保存，或右键另存为 → 发到微信/QQ 朋友圈拉好友来青叶</p>
+        <div class="share-actions">
+          <n-button type="primary" round @click="downloadShare">⬇️ 下载图片</n-button>
+          <n-button quaternary round @click="shareImg = null">关闭</n-button>
+        </div>
       </div>
     </div>
   </div>
@@ -102,10 +122,14 @@
 import { ref, computed, onMounted } from 'vue'
 import { useMessage } from 'naive-ui'
 import { treesApi } from '@/api/trees'
+import { useAuthStore } from '@/stores/auth'
 import {
   generateTreeStyle, treeTrunkColor, treeCanopyColor,
   canopyPositions, dropletPositions,
 } from '@/utils/treeGenerator'
+import { generateTreeShareCard } from '@/utils/shareCard'
+
+const auth = useAuthStore()
 
 const message = useMessage()
 
@@ -116,6 +140,7 @@ const loading = ref(true)
 const watering = ref(false)
 const waterAnim = ref(false)
 const petals = ref<any[]>([])
+const shareImg = ref<string | null>(null)
 
 const STAGE_NAMES = ['种子', '萌芽', '幼苗', '小树', '大树', '古树']
 
@@ -207,6 +232,31 @@ function spawnPetals() {
   }
   setTimeout(() => (petals.value = []), 3000)
 }
+
+function generateShare() {
+  if (!currentTree.value) return
+  const myName = auth.user?.nickname || auth.user?.username || '我'
+  shareImg.value = generateTreeShareCard({
+    friendName: currentTree.value.friend_name,
+    myName,
+    stageIndex: currentTree.value.stage_index,
+    stageName: currentTree.value.stage_name,
+    stageEmoji: currentTree.value.stage_emoji,
+    messageCount: currentTree.value.message_count,
+    waterCount: currentTree.value.water_count,
+    totalScore: currentTree.value.total_score,
+    hue: style.value.hue,
+  })
+}
+
+function downloadShare() {
+  if (!shareImg.value) return
+  const a = document.createElement('a')
+  a.href = shareImg.value
+  a.download = `青叶-好友之树-${currentTree.value?.friend_name}.png`
+  a.click()
+  message.success('已下载，去发朋友圈吧')
+}
 </script>
 
 <style scoped>
@@ -292,4 +342,24 @@ function spawnPetals() {
 }
 .progress-text { font-size: 12px; color: var(--color-text-hint); }
 .max-stage { font-size: 13px; color: var(--color-primary); margin-bottom: 8px; }
+
+/* 操作按钮行 */
+.action-row { display: flex; gap: 8px; justify-content: center; margin-top: 16px; }
+
+/* 分享弹窗 */
+.modal-overlay {
+  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
+  display: flex; align-items: center; justify-content: center; z-index: 1000; padding: 20px;
+}
+.share-modal {
+  background: var(--color-surface); border-radius: 16px; padding: 20px;
+  max-width: 420px; max-height: 90vh; overflow-y: auto;
+  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
+}
+.share-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
+.share-header h3 { margin: 0; font-size: 16px; }
+.close-btn { cursor: pointer; font-size: 18px; color: var(--color-text-hint); }
+.share-preview { width: 100%; border-radius: 12px; display: block; }
+.share-tip { font-size: 12px; color: var(--color-text-hint); text-align: center; margin: 10px 0; }
+.share-actions { display: flex; gap: 8px; justify-content: center; }
 </style>
diff --git a/提示词.md b/提示词.md
index d7d988b..2d4f854 100644
--- a/提示词.md
+++ b/提示词.md
@@ -36,4 +36,8 @@
 
 这个窗口一直不关上
 
-可以
\ No newline at end of file
+可以
+
+给我一个其他人用青叶而不是微信QQ的理由，没有就继续改进
+
+把其他社交软件有的功能补全
\ No newline at end of file