```

feat(game): add player cards and topbar styling for Chengdu Mahjong game

- Add new CSS classes for topbar layout including .topbar-left,
  .topbar-back-btn, .topbar-room-meta, .eyebrow, and .topbar-room-name
- Create dedicated player card components for each seat position
  (top, right, bottom, left)
- Refactor seatDecor computed property to use SeatPlayerCardModel
  interface with proper typing
- Replace inline player badge rendering with reusable player card
  components
- Update game header layout to use new topbar structure with
  back button and room metadata
- Adjust spacing and font sizes in game header elements
```

src/assets/styles/global.css

@@ -459,6 +459,39 @@ button:disabled {
   min-width: 0;
 }
 
+.topbar-left {
+  display: flex;
+  align-items: center;
+  gap: 14px;
+  min-width: 0;
+}
+
+.topbar-back-btn {
+  flex: 0 0 auto;
+  min-width: 108px;
+}
+
+.topbar-room-meta {
+  min-width: 0;
+}
+
+.eyebrow {
+  color: #f7e4b0;
+  font-size: 12px;
+  letter-spacing: 2px;
+  text-transform: uppercase;
+}
+
+.topbar-room-name {
+  margin-top: 4px;
+  color: #f6edd5;
+  font-size: 20px;
+  font-weight: 700;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
 .game-header h1 {
   font-size: 28px;
   font-weight: 800;
@@ -467,9 +500,9 @@ button:disabled {
 }
 
 .game-header .sub-title {
-  margin-top: 6px;
+  margin-top: 4px;
   color: #d7eadf;
-  font-size: 13px;
+  font-size: 12px;
   white-space: nowrap;
   overflow: hidden;
   text-overflow: ellipsis;
@@ -1195,6 +1228,10 @@ button:disabled {
     justify-items: stretch;
   }
 
+  .topbar-left {
+    flex-wrap: wrap;
+  }
+
   .topbar-center,
   .topbar-right {
     justify-content: flex-start;

src/components/game/BottomPlayerCard.vue

@@ -0,0 +1,12 @@
+<script setup lang="ts">
+import SeatPlayerCard from './SeatPlayerCard.vue'
+import type { SeatPlayerCardModel } from './seat-player-card'
+
+defineProps<{
+  player: SeatPlayerCardModel
+}>()
+</script>
+
+<template>
+  <SeatPlayerCard seat-class="seat-bottom" :player="player" />
+</template>

src/components/game/LeftPlayerCard.vue

@@ -0,0 +1,12 @@
+<script setup lang="ts">
+import SeatPlayerCard from './SeatPlayerCard.vue'
+import type { SeatPlayerCardModel } from './seat-player-card'
+
+defineProps<{
+  player: SeatPlayerCardModel
+}>()
+</script>
+
+<template>
+  <SeatPlayerCard seat-class="seat-left" :player="player" />
+</template>

src/components/game/RightPlayerCard.vue

@@ -0,0 +1,12 @@
+<script setup lang="ts">
+import SeatPlayerCard from './SeatPlayerCard.vue'
+import type { SeatPlayerCardModel } from './seat-player-card'
+
+defineProps<{
+  player: SeatPlayerCardModel
+}>()
+</script>
+
+<template>
+  <SeatPlayerCard seat-class="seat-right" :player="player" />
+</template>

src/components/game/SeatPlayerCard.vue

@@ -0,0 +1,23 @@
+<script setup lang="ts">
+import type { SeatPlayerCardModel } from './seat-player-card'
+
+defineProps<{
+  seatClass: string
+  player: SeatPlayerCardModel
+}>()
+</script>
+
+<template>
+  <article
+    class="player-badge"
+    :class="[seatClass, { 'is-turn': player.isTurn, offline: !player.isOnline }]"
+  >
+    <div class="avatar-card">{{ player.avatar }}</div>
+    <div class="player-meta">
+      <p>{{ player.name }}</p>
+      <strong>{{ player.money }}</strong>
+    </div>
+    <span v-if="player.dealer" class="dealer-mark">庄</span>
+    <span class="missing-mark">{{ player.missingSuitLabel }}</span>
+  </article>
+</template>

src/components/game/TopPlayerCard.vue

@@ -0,0 +1,12 @@
+<script setup lang="ts">
+import SeatPlayerCard from './SeatPlayerCard.vue'
+import type { SeatPlayerCardModel } from './seat-player-card'
+
+defineProps<{
+  player: SeatPlayerCardModel
+}>()
+</script>
+
+<template>
+  <SeatPlayerCard seat-class="seat-top" :player="player" />
+</template>

src/components/game/seat-player-card.ts

@@ -0,0 +1,9 @@
+export interface SeatPlayerCardModel {
+  avatar: string
+  name: string
+  money: string
+  dealer: boolean
+  isTurn: boolean
+  isOnline: boolean
+  missingSuitLabel: string
+}

src/views/ChengduGamePage.vue

@@ -6,9 +6,14 @@ import topBackImage from '../assets/images/tiles/top/tbgs_2.png'
 import rightBackImage from '../assets/images/tiles/right/tbgs_1.png'
 import bottomBackImage from '../assets/images/tiles/bottom/tdbgs_4.png'
 import leftBackImage from '../assets/images/tiles/left/tbgs_3.png'
+import TopPlayerCard from '../components/game/TopPlayerCard.vue'
+import RightPlayerCard from '../components/game/RightPlayerCard.vue'
+import BottomPlayerCard from '../components/game/BottomPlayerCard.vue'
+import LeftPlayerCard from '../components/game/LeftPlayerCard.vue'
 import type { AuthSession } from '../api/authed-request'
 import { refreshAccessToken } from '../api/auth'
 import { getUserInfo } from '../api/user'
+import type { SeatPlayerCardModel } from '../components/game/seat-player-card'
 import {
   DEFAULT_MAX_PLAYERS,
   activeRoomState,
@@ -213,25 +218,66 @@ const wallBacks = computed<Record<SeatKey, string[]>>(() => {
   }
 })
 
-const seatDecor = computed(() => {
+const seatDecor = computed<Record<SeatKey, SeatPlayerCardModel>>(() => {
   const scoreMap = roomState.value.game?.state?.scores ?? {}
   const dealerIndex = roomState.value.game?.state?.dealerIndex ?? -1
 
-  return seatViews.value.map((seat, index) => {
+  return seatViews.value.reduce(
+    (acc, seat, index) => {
     const playerId = seat.player?.playerId ?? ''
     const score = playerId ? scoreMap[playerId] : undefined
 
-    return {
-      seat: seat.key,
-      avatar: seat.isSelf ? '我' : String(index + 1),
-      name: seat.player ? (seat.isSelf ? '你' : playerId) : '空位',
-      money: typeof score === 'number' ? `${score}` : '--',
-      dealer: seat.player?.index === dealerIndex,
-      isTurn: seat.isTurn,
-      isOnline: Boolean(seat.player),
-      missingSuit: null as string | null,
-    }
-  })
+      acc[seat.key] = {
+        avatar: seat.isSelf ? '我' : String(index + 1),
+        name: seat.player ? (seat.isSelf ? '你' : playerId) : '空位',
+        money: typeof score === 'number' ? `${score}` : '--',
+        dealer: seat.player?.index === dealerIndex,
+        isTurn: seat.isTurn,
+        isOnline: Boolean(seat.player),
+        missingSuitLabel: missingSuitLabel(null),
+      }
+
+      return acc
+    },
+    {
+      top: {
+        avatar: '1',
+        name: '空位',
+        money: '--',
+        dealer: false,
+        isTurn: false,
+        isOnline: false,
+        missingSuitLabel: missingSuitLabel(null),
+      },
+      right: {
+        avatar: '2',
+        name: '空位',
+        money: '--',
+        dealer: false,
+        isTurn: false,
+        isOnline: false,
+        missingSuitLabel: missingSuitLabel(null),
+      },
+      bottom: {
+        avatar: '我',
+        name: '空位',
+        money: '--',
+        dealer: false,
+        isTurn: false,
+        isOnline: false,
+        missingSuitLabel: missingSuitLabel(null),
+      },
+      left: {
+        avatar: '4',
+        name: '空位',
+        money: '--',
+        dealer: false,
+        isTurn: false,
+        isOnline: false,
+        missingSuitLabel: missingSuitLabel(null),
+      },
+    },
+  )
 })
 
 const centerTimer = computed(() => {
@@ -905,14 +951,15 @@ onBeforeUnmount(() => {
 <template>
   <section class="hall-page game-page">
     <header class="hall-header game-header">
-      <div>
-        <h1>成都麻将对局</h1>
-        <p v-if="loggedInUserName" class="sub-title">玩家：{{ loggedInUserName }}</p>
-      </div>
-      <div class="header-actions">
-        <button class="ghost-btn" type="button" :disabled="leaveRoomPending" @click="backHall">
+      <div class="topbar-left">
+        <button class="ghost-btn topbar-back-btn" type="button" :disabled="leaveRoomPending" @click="backHall">
           {{ leaveRoomPending ? '退出中...' : '返回大厅' }}
         </button>
+        <div class="topbar-room-meta">
+          <p class="eyebrow">成都麻将对局</p>
+          <p class="topbar-room-name">{{ roomState.name || roomName || '未命名房间' }}</p>
+          <p v-if="loggedInUserName" class="sub-title">玩家：{{ loggedInUserName }}</p>
+        </div>
       </div>
 
       <div class="topbar-center">
@@ -972,20 +1019,10 @@ onBeforeUnmount(() => {
           <small>底注 6 番 · 封顶 32 倍</small>
         </div>
 
-        <article
-          v-for="player in seatDecor"
-          :key="player.seat"
-          class="player-badge"
-          :class="[`seat-${player.seat}`, { 'is-turn': player.isTurn, offline: !player.isOnline }]"
-        >
-          <div class="avatar-card">{{ player.avatar }}</div>
-          <div class="player-meta">
-            <p>{{ player.name }}</p>
-            <strong>{{ player.money }}</strong>
-          </div>
-          <span v-if="player.dealer" class="dealer-mark">庄</span>
-          <span class="missing-mark">{{ missingSuitLabel(player.missingSuit) }}</span>
-        </article>
+        <TopPlayerCard :player="seatDecor.top" />
+        <RightPlayerCard :player="seatDecor.right" />
+        <BottomPlayerCard :player="seatDecor.bottom" />
+        <LeftPlayerCard :player="seatDecor.left" />
 
         <div class="wall wall-top">
           <img v-for="key in wallBacks.top" :key="key" :src="getBackImage('top')" alt="" />