diff --git a/src/core/App.js b/src/core/App.js
index 56dd92e..3e4e61f 100644
--- a/src/core/App.js
+++ b/src/core/App.js
@@ -7,12 +7,14 @@ import { CesiumGlobe } from '../scene/CesiumGlobe.js';
 import { Overlay } from '../ui/overlay.js';
 import { clamp, easeInOutCubic } from '../utils/easing.js';
 
+// Three.js 相机的初始位（仅活页本/时间轴；地理视图用 Cesium 自己的相机）
 const CAMERA_POSES = {
   binder: { pos: new THREE.Vector3(0.2, 0.75, 2.95), target: new THREE.Vector3(0, 0.02, 0), max: 4.4, min: 2.4 },
   timeline: { pos: new THREE.Vector3(0, 1.4, 6.86), target: new THREE.Vector3(0, 0, 0), max: 8, min: 1.2 },
-  globe: { pos: new THREE.Vector3(0, 0.35, 3.7), target: new THREE.Vector3(0, 0, 0), max: 8, min: 2.2 },
 };
 
+const VIEWS = ['binder', 'timeline', 'globe'];
+
 export class App {
   constructor() {
     this.view = 'binder';
@@ -367,7 +369,7 @@ export class App {
   }
 
   switchView(view) {
-    if (view === this.view || !CAMERA_POSES[view]) return;
+    if (view === this.view || !VIEWS.includes(view)) return;
     // 地理视图尚未就绪（按钮仍置灰）时忽略切换，键盘也无法绕过
     if (view === 'globe' && !this.globe.viewer) return;
     // 离开当前视图前，记住它的相机位置
@@ -417,28 +419,20 @@ export class App {
     // 登记卡详情在视图切换时保持显示，不隐藏
     document.getElementById('detail-card').classList.remove('hidden');
 
-    const pose = CAMERA_POSES[view];
-    this.controls.minDistance = pose.min;
-    this.controls.maxDistance = pose.max;
-    // 时间轴：锁定旋转/平移；滚轮缩放；拖拽左右滑动
-    const locked = view === 'timeline';
-    this.controls.enableRotate = !locked;
-    this.controls.enablePan = !locked;
-    this.controls.enableZoom = false; // 滚轮缩放改为自定义渐变动画
-    this.controls.autoRotate = false;
-
-    // 左键旋转限制：以各视图初始视角为中心，各方向 ±10°
-    this._applyRotationLimits(pose);
-
-    // 进入时间轴时：自动定位到当前选中的活页居中
-    if (view === 'timeline') {
-      const limit = TIMELINE_SPREAD + 0.6;
-      this.timelineOffset = clamp(-this.timeline.getCardX(this.selected), -limit, limit);
-      this.timeline.group.position.x = this.timelineOffset;
-      this.timeline.refreshTextures();
-    }
-
     if (!isGlobe) {
+      const pose = CAMERA_POSES[view];
+      this.controls.minDistance = pose.min;
+      this.controls.maxDistance = pose.max;
+      // 时间轴：锁定旋转/平移；滚轮缩放；拖拽左右滑动
+      const locked = view === 'timeline';
+      this.controls.enableRotate = !locked;
+      this.controls.enablePan = !locked;
+      this.controls.enableZoom = false; // 滚轮缩放改为自定义渐变动画
+      this.controls.autoRotate = false;
+
+      // 左键旋转限制：以各视图初始视角为中心，各方向 ±10°
+      this._applyRotationLimits(pose);
+
       // 切换视图：直接定位（有记忆则恢复上次的相机位置）
       this.cameraTween = null;
       this.zoomTarget = null;
@@ -451,6 +445,14 @@ export class App {
         this.controls.target.copy(pose.target);
       }
     }
+
+    // 进入时间轴时：自动定位到当前选中的活页居中
+    if (view === 'timeline') {
+      const limit = TIMELINE_SPREAD + 0.6;
+      this.timelineOffset = clamp(-this.timeline.getCardX(this.selected), -limit, limit);
+      this.timeline.group.position.x = this.timelineOffset;
+      this.timeline.refreshTextures();
+    }
     this._needsRender = true;
   }