diff --git a/packages/sts-like-viewer/src/scenes/PlaceholderEncounterScene.ts b/packages/sts-like-viewer/src/scenes/PlaceholderEncounterScene.ts
index fbf9553..e2ed79e 100644
--- a/packages/sts-like-viewer/src/scenes/PlaceholderEncounterScene.ts
+++ b/packages/sts-like-viewer/src/scenes/PlaceholderEncounterScene.ts
@@ -13,24 +13,16 @@ import {
 /**
  * 占位符遭遇场景
  *
- * 当前实现：从全局 gameState 读取当前遭遇信息并展示，左侧显示背包网格
- *
- * 后续扩展：根据 encounter.type 路由到不同的专用遭遇场景
- * - MapNodeType.Minion / Elite → CombatEncounterScene
- * - MapNodeType.Shop → ShopEncounterScene
- * - MapNodeType.Camp → CampEncounterScene
- * - MapNodeType.Event → EventEncounterScene
- * - MapNodeType.Curio → CurioEncounterScene
+ * 左侧显示背包网格（80x80 每格），右侧显示遭遇信息。
  */
 export class PlaceholderEncounterScene extends ReactiveScene {
-  /** 全局游戏状态（由 App.tsx 注入） */
   private gameState: MutableSignal<RunState>;
 
   // Grid constants
   private readonly CELL_SIZE = 80;
-  private readonly GRID_PADDING = 40;
-  private gridOffsetX = 0;
-  private gridOffsetY = 0;
+  private readonly GRID_GAP = 2;
+  private gridX = 0;
+  private gridY = 0;
 
   constructor(gameState: MutableSignal<RunState>) {
     super('PlaceholderEncounterScene');
@@ -42,175 +34,174 @@ export class PlaceholderEncounterScene extends ReactiveScene {
     const { width, height } = this.scale;
     const state = this.gameState.value;
 
-    // Calculate grid position (left side, vertically centered)
-    this.gridOffsetX = this.GRID_PADDING;
-    const gridHeight = 4 * this.CELL_SIZE;
-    this.gridOffsetY = (height - gridHeight) / 2;
+    // ── Layout: split screen into left (grid) and right (encounter) ──
+    const gridCols = state.inventory.width;   // 6
+    const gridRows = state.inventory.height;   // 4
+    const gridW = gridCols * this.CELL_SIZE;
+    const gridH = gridRows * this.CELL_SIZE;
+    const leftPanelW = gridW + 40;            // panel padding
 
-    // Draw inventory grid
-    this.drawInventoryGrid();
+    this.gridX = 60;
+    this.gridY = (height - gridH) / 2 + 20;
 
-    // Read encounter data from global state
+    // Ensure camera shows the full grid
+    this.cameras.main.setBounds(0, 0, width, height);
+    this.cameras.main.setScroll(0, 0);
+
+    // ── LEFT PANEL: inventory grid ──
+    this.drawLeftPanel(leftPanelW, gridW, gridH);
+
+    // ── RIGHT PANEL: encounter info ──
     const node = state.map.nodes.get(state.currentNodeId);
     if (!node || !node.encounter) {
-      this.add.text(width / 2, height / 2, '没有遭遇数据', {
-        fontSize: '24px',
-        color: '#ff4444',
+      const rightX = leftPanelW + 80;
+      this.add.text(rightX + 300, height / 2, '没有遭遇数据', {
+        fontSize: '24px', color: '#ff4444',
       }).setOrigin(0.5);
       return;
     }
 
-    const encounter = {
-      type: node.type,
-      name: node.encounter.name,
-      description: node.encounter.description,
-    };
-    const nodeId = node.id;
-
-    // Right side panel for encounter info
-    const rightPanelX = this.gridOffsetX + state.inventory.width * this.CELL_SIZE + 60;
-    const centerX = rightPanelX + 300;
-    const centerY = height / 2;
-
-    // Title
-    this.add.text(centerX, centerY - 150, '遭遇', {
-      fontSize: '32px',
-      color: '#ffffff',
-      fontStyle: 'bold',
-    }).setOrigin(0.5);
-
-    // Encounter type badge
-    const typeLabel = this.getEncounterTypeLabel(encounter.type);
-    this.add.rectangle(centerX, centerY - 80, 120, 36, this.getEncounterTypeColor(encounter.type));
-    this.add.text(centerX, centerY - 80, typeLabel, {
-      fontSize: '16px',
-      color: '#ffffff',
-      fontStyle: 'bold',
-    }).setOrigin(0.5);
-
-    // Encounter name
-    this.add.text(centerX, centerY - 30, encounter.name, {
-      fontSize: '24px',
-      color: '#ffffff',
-    }).setOrigin(0.5);
-
-    // Encounter description
-    this.add.text(centerX, centerY + 20, encounter.description || '（暂无描述）', {
-      fontSize: '16px',
-      color: '#aaaaaa',
-      wordWrap: { width: 500 },
-      align: 'center',
-    }).setOrigin(0.5);
-
-    // Node ID info
-    this.add.text(centerX, centerY + 80, `节点: ${nodeId}`, {
-      fontSize: '12px',
-      color: '#666666',
-    }).setOrigin(0.5);
-
-    // Placeholder notice
-    this.add.text(centerX, centerY + 130, '（此为占位符遭遇，后续将替换为真实遭遇场景）', {
-      fontSize: '14px',
-      color: '#ff8844',
-      fontStyle: 'italic',
-    }).setOrigin(0.5);
-
-    // Complete button
-    this.createButton('完成遭遇', centerX, centerY + 200, 200, 50, async () => {
-      await this.completeEncounter();
-    });
-
-    // Back button (without resolving)
-    this.createButton('暂不处理', centerX, centerY + 270, 200, 40, async () => {
-      await this.sceneController.launch('GameFlowScene');
-    });
+    this.drawRightPanel(node, leftPanelW, width, height);
   }
 
-  private drawInventoryGrid(): void {
-    const state = this.gameState.value;
-    const { width, height } = state.inventory;
+  // ───────────────────── LEFT PANEL ─────────────────────
 
-    // Background panel for the grid area
-    const panelWidth = width * this.CELL_SIZE + 20;
-    const panelHeight = height * this.CELL_SIZE + 60;
-    const panelX = this.gridOffsetX - 10;
-    const panelY = this.gridOffsetY - 40;
+  private drawLeftPanel(panelW: number, gridW: number, gridH: number): void {
+    // Panel background
+    this.add.rectangle(
+      this.gridX + panelW / 2, this.gridY + gridH / 2,
+      panelW + 10, gridH + 50,
+      0x111122, 0.9
+    ).setStrokeStyle(2, 0x5555aa);
 
-    this.add.rectangle(panelX + panelWidth / 2, panelY + panelHeight / 2, panelWidth, panelHeight, 0x1a1a2e)
-      .setStrokeStyle(2, 0x333355);
-
-    // Title
-    this.add.text(this.gridOffsetX + (width * this.CELL_SIZE) / 2, panelY + 10, '背包', {
-      fontSize: '18px',
-      color: '#ffffff',
-      fontStyle: 'bold',
+    // "背包" title
+    this.add.text(this.gridX + gridW / 2, this.gridY - 20, '背包', {
+      fontSize: '22px', color: '#ffffff', fontStyle: 'bold',
     }).setOrigin(0.5);
 
-    const gridY = this.gridOffsetY + 15;
-
-    // Draw empty cells
     const graphics = this.add.graphics();
-    for (let y = 0; y < height; y++) {
-      for (let x = 0; x < width; x++) {
-        const px = this.gridOffsetX + x * this.CELL_SIZE;
-        const py = gridY + y * this.CELL_SIZE;
 
-        graphics.lineStyle(1, 0x444466);
+    // Draw empty cell backgrounds
+    for (let y = 0; y < 4; y++) {
+      for (let x = 0; x < 6; x++) {
+        const px = this.gridX + x * this.CELL_SIZE;
+        const py = this.gridY + y * this.CELL_SIZE;
+
+        // Dark cell fill
+        graphics.fillStyle(0x1a1a2e);
+        graphics.fillRect(px + 1, py + 1, this.CELL_SIZE - 2, this.CELL_SIZE - 2);
+
+        // Cell border
+        graphics.lineStyle(2, 0x444477);
         graphics.strokeRect(px, py, this.CELL_SIZE, this.CELL_SIZE);
       }
     }
 
-    // Draw items
-    const itemColors = [0x4488cc, 0xcc8844, 0x44cc88, 0xcc4488, 0x8844cc, 0x44cccc, 0xcccc44, 0x8888cc];
-    let colorIndex = 0;
-    const itemColorMap = new Map<string, number>();
+    // Draw items on top
+    this.drawItems(graphics);
+  }
 
-    for (const [itemId, item] of state.inventory.items) {
-      // Assign a color to this item
-      if (!itemColorMap.has(itemId)) {
-        itemColorMap.set(itemId, itemColors[colorIndex % itemColors.length]);
-        colorIndex++;
-      }
-      const itemColor = itemColorMap.get(itemId)!;
+  private drawItems(graphics: Phaser.GameObjects.Graphics): void {
+    const state = this.gameState.value;
+    const palette = [0x3388ff, 0xff8833, 0x33ff88, 0xff3388, 0x8833ff, 0x33ffff, 0xffff33, 0xff6633];
+    const colorMap = new Map<string, number>();
+    let idx = 0;
+
+    for (const [id, item] of state.inventory.items) {
+      const color = colorMap.get(id) ?? palette[idx++ % palette.length];
+      colorMap.set(id, color);
 
-      // Get occupied cells for this item
       const cells = this.getItemCells(item);
+      if (cells.length === 0) continue;
 
-      // Draw filled cells
-      for (const cell of cells) {
-        const px = this.gridOffsetX + cell.x * this.CELL_SIZE;
-        const py = gridY + cell.y * this.CELL_SIZE;
+      // Filled cells
+      for (const c of cells) {
+        const px = this.gridX + c.x * this.CELL_SIZE;
+        const py = this.gridY + c.y * this.CELL_SIZE;
 
-        graphics.fillStyle(itemColor);
+        graphics.fillStyle(color);
         graphics.fillRect(px + 2, py + 2, this.CELL_SIZE - 4, this.CELL_SIZE - 4);
         graphics.lineStyle(2, 0xffffff);
         graphics.strokeRect(px, py, this.CELL_SIZE, this.CELL_SIZE);
       }
 
-      // Item name label (at first cell)
-      if (cells.length > 0) {
-        const firstCell = cells[0];
-        const px = this.gridOffsetX + firstCell.x * this.CELL_SIZE;
-        const py = gridY + firstCell.y * this.CELL_SIZE;
-        const itemName = item.meta?.itemData?.name ?? item.id;
-
-        this.add.text(px + this.CELL_SIZE / 2, py + this.CELL_SIZE / 2, itemName, {
-          fontSize: '12px',
-          color: '#ffffff',
-          fontStyle: 'bold',
-        }).setOrigin(0.5);
-      }
+      // Item name
+      const first = cells[0];
+      const name = item.meta?.itemData?.name ?? item.id;
+      this.add.text(
+        this.gridX + first.x * this.CELL_SIZE + this.CELL_SIZE / 2,
+        this.gridY + first.y * this.CELL_SIZE + this.CELL_SIZE / 2,
+        name, { fontSize: '12px', color: '#fff', fontStyle: 'bold' }
+      ).setOrigin(0.5);
     }
   }
 
+  // ───────────────────── RIGHT PANEL ─────────────────────
+
+  private drawRightPanel(node: any, leftPanelW: number, width: number, height: number): void {
+    const encounter = {
+      type: node.type as MapNodeType,
+      name: node.encounter.name as string,
+      description: node.encounter.description as string,
+    };
+    const nodeId = node.id as string;
+
+    const rightX = leftPanelW + 60;
+    const rightW = width - rightX - 40;
+    const cx = rightX + rightW / 2;
+    const cy = height / 2;
+
+    // Title
+    this.add.text(cx, cy - 180, '遭遇', {
+      fontSize: '36px', color: '#fff', fontStyle: 'bold',
+    }).setOrigin(0.5);
+
+    // Type badge
+    const typeLabel = this.getTypeLabel(encounter.type);
+    const badgeColor = this.getTypeColor(encounter.type);
+    this.add.rectangle(cx, cy - 110, 140, 40, badgeColor);
+    this.add.text(cx, cy - 110, typeLabel, {
+      fontSize: '18px', color: '#fff', fontStyle: 'bold',
+    }).setOrigin(0.5);
+
+    // Name
+    this.add.text(cx, cy - 50, encounter.name, {
+      fontSize: '28px', color: '#fff',
+    }).setOrigin(0.5);
+
+    // Description
+    this.add.text(cx, cy + 10, encounter.description || '（暂无描述）', {
+      fontSize: '18px', color: '#bbb',
+      wordWrap: { width: rightW - 40 }, align: 'center',
+    }).setOrigin(0.5);
+
+    // Node id
+    this.add.text(cx, cy + 80, `节点: ${nodeId}`, {
+      fontSize: '14px', color: '#666',
+    }).setOrigin(0.5);
+
+    // Placeholder notice
+    this.add.text(cx, cy + 130, '（此为占位符遭遇，后续将替换为真实遭遇场景）', {
+      fontSize: '14px', color: '#ff8844', fontStyle: 'italic',
+    }).setOrigin(0.5);
+
+    // Buttons
+    this.createButton('完成遭遇', cx, cy + 200, 220, 50, async () => {
+      await this.completeEncounter();
+    });
+    this.createButton('暂不处理', cx, cy + 270, 220, 40, async () => {
+      await this.sceneController.launch('GameFlowScene');
+    });
+  }
+
+  // ───────────────────── Helpers ─────────────────────
+
   private getItemCells(item: InventoryItem<GameItemMeta>): { x: number; y: number }[] {
     const cells: { x: number; y: number }[] = [];
-    const shape = item.shape;
     const { offset } = item.transform;
-
-    for (let y = 0; y < shape.height; y++) {
-      for (let x = 0; x < shape.width; x++) {
-        if (shape.grid[y]?.[x]) {
+    for (let y = 0; y < item.shape.height; y++) {
+      for (let x = 0; x < item.shape.width; x++) {
+        if (item.shape.grid[y]?.[x]) {
           cells.push({ x: x + offset.x, y: y + offset.y });
         }
       }
@@ -218,96 +209,51 @@ export class PlaceholderEncounterScene extends ReactiveScene {
     return cells;
   }
 
+  private getTypeLabel(type: MapNodeType): string {
+    const m: Record<MapNodeType, string> = {
+      start: '起点', end: '终点', minion: '战斗', elite: '精英战斗',
+      event: '事件', camp: '营地', shop: '商店', curio: '奇遇',
+    };
+    return m[type] ?? type;
+  }
+
+  private getTypeColor(type: MapNodeType): number {
+    const m: Record<MapNodeType, number> = {
+      start: 0x44aa44, end: 0xcc8844, minion: 0xcc4444, elite: 0xcc44cc,
+      event: 0xaaaa44, camp: 0x44cccc, shop: 0x4488cc, curio: 0x8844cc,
+    };
+    return m[type] ?? 0x888888;
+  }
+
+  private createButton(label: string, x: number, y: number, w: number, h: number, onClick: () => void): void {
+    const bg = this.add.rectangle(x, y, w, h, 0x444466)
+      .setStrokeStyle(2, 0x7777aa).setInteractive({ useHandCursor: true });
+    const txt = this.add.text(x, y, label, { fontSize: '16px', color: '#fff' }).setOrigin(0.5);
+
+    bg.on('pointerover', () => { bg.setFillStyle(0x555588); txt.setScale(1.05); });
+    bg.on('pointerout', () => { bg.setFillStyle(0x444466); txt.setScale(1); });
+    bg.on('pointerdown', onClick);
+  }
+
   private async completeEncounter(): Promise<void> {
     const state = this.gameState.value;
-
-    // Get current encounter info
     const node = state.map.nodes.get(state.currentNodeId);
     if (!node || !node.encounter) return;
 
-    // 生成模拟遭遇结果
     const result: EncounterResult = this.generatePlaceholderResult(node.type);
-
-    // 调用进度管理器结算遭遇
     resolveEncounter(state, result);
-
-    // 返回游戏流程场景
     await this.sceneController.launch('GameFlowScene');
   }
 
   private generatePlaceholderResult(type: MapNodeType): EncounterResult {
-    // 根据遭遇类型生成不同的模拟结果
     switch (type) {
-      case 'minion':
-      case 'elite':
-        return { hpLost: type === 'elite' ? 15 : 8, goldEarned: type === 'elite' ? 30 : 15 };
-      case 'camp':
-        return { hpGained: 15 };
-      case 'shop':
-        return { goldEarned: 0 };
+      case 'minion': return { hpLost: 8, goldEarned: 15 };
+      case 'elite': return { hpLost: 15, goldEarned: 30 };
+      case 'camp': return { hpGained: 15 };
+      case 'shop': return { goldEarned: 0 };
       case 'curio':
-      case 'event':
-        return { goldEarned: 20 };
-      default:
-        return {};
+      case 'event': return { goldEarned: 20 };
+      default: return {};
     }
   }
-
-  private getEncounterTypeLabel(type: MapNodeType): string {
-    const labels: Record<MapNodeType, string> = {
-      start: '起点',
-      end: '终点',
-      minion: '战斗',
-      elite: '精英战斗',
-      event: '事件',
-      camp: '营地',
-      shop: '商店',
-      curio: '奇遇',
-    };
-    return labels[type] ?? type;
-  }
-
-  private getEncounterTypeColor(type: MapNodeType): number {
-    const colors: Record<MapNodeType, number> = {
-      start: 0x44aa44,
-      end: 0xcc8844,
-      minion: 0xcc4444,
-      elite: 0xcc44cc,
-      event: 0xaaaa44,
-      camp: 0x44cccc,
-      shop: 0x4488cc,
-      curio: 0x8844cc,
-    };
-    return colors[type] ?? 0x888888;
-  }
-
-  private createButton(
-    label: string,
-    x: number,
-    y: number,
-    width: number,
-    height: number,
-    onClick: () => void
-  ): void {
-    const bg = this.add.rectangle(x, y, width, height, 0x444466)
-      .setStrokeStyle(2, 0x7777aa)
-      .setInteractive({ useHandCursor: true });
-
-    const text = this.add.text(x, y, label, {
-      fontSize: '16px',
-      color: '#ffffff',
-    }).setOrigin(0.5);
-
-    bg.on('pointerover', () => {
-      bg.setFillStyle(0x555588);
-      text.setScale(1.05);
-    });
-
-    bg.on('pointerout', () => {
-      bg.setFillStyle(0x444466);
-      text.setScale(1);
-    });
-
-    bg.on('pointerdown', onClick);
-  }
 }