初始化多多畅职企业内推平台项目

功能特性：
- 3D地球动画与中国地图可视化
- 省份/城市/企业搜索功能
- 308家企业数据展示
- 响应式设计（PC端和移动端）
- 企业详情页面与业务板块展示
- 官网新闻轮播图

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

js/scene/EarthModel.js

@@ -0,0 +1,127 @@
+/* ===================================
+   地球模型 - 包含地球、云层、大气层
+   =================================== */
+
+import { CONFIG } from '../config.js';
+
+export class EarthModel {
+    constructor(scene) {
+        this.scene = scene;
+        this.earthGroup = new THREE.Group();
+        this.earth = null;
+        this.clouds = null;
+        this.atmosphere = null;
+        this.loader = new THREE.TextureLoader();
+
+        this.init();
+    }
+
+    // 初始化地球模型
+    init() {
+        const radius = CONFIG.scene.earth.radius;
+        const segments = CONFIG.scene.earth.segments;
+
+        // 创建地球
+        this.earth = new THREE.Mesh(
+            new THREE.SphereGeometry(radius, segments, segments),
+            new THREE.MeshPhongMaterial({
+                map: this.loader.load(CONFIG.textures.earthMap),
+                specularMap: this.loader.load(CONFIG.textures.earthSpecular),
+                normalMap: this.loader.load(CONFIG.textures.earthNormal),
+                specular: new THREE.Color(0x111111),
+                shininess: 5
+            })
+        );
+        this.earthGroup.add(this.earth);
+
+        // 创建云层
+        this.clouds = new THREE.Mesh(
+            new THREE.SphereGeometry(CONFIG.scene.earth.cloudRadius, segments, segments),
+            new THREE.MeshLambertMaterial({
+                map: this.loader.load(CONFIG.textures.earthClouds),
+                transparent: true,
+                opacity: 0.9,
+                blending: THREE.AdditiveBlending
+            })
+        );
+        this.earthGroup.add(this.clouds);
+
+        // 创建大气光晕
+        this.atmosphere = new THREE.Mesh(
+            new THREE.SphereGeometry(CONFIG.scene.earth.atmosphereRadius, segments, segments),
+            new THREE.ShaderMaterial({
+                vertexShader: `
+                    varying vec3 vNormal;
+                    void main() {
+                        vNormal = normalize(normalMatrix * normal);
+                        gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
+                    }
+                `,
+                fragmentShader: `
+                    varying vec3 vNormal;
+                    void main() {
+                        float intensity = pow(0.55 - dot(vNormal, vec3(0, 0, 1.0)), 4.5);
+                        gl_FragColor = vec4(0.0, 0.6, 1.0, 1.0) * intensity;
+                    }
+                `,
+                blending: THREE.AdditiveBlending,
+                side: THREE.BackSide,
+                transparent: true
+            })
+        );
+
+        // 大气层独立添加到场景（不在earthGroup中，避免被旋转）
+        this.scene.add(this.atmosphere);
+        this.scene.add(this.earthGroup);
+    }
+
+    // 自动旋转地球和云层
+    rotate() {
+        if (this.earthGroup) {
+            this.earthGroup.rotation.y += 0.0008;
+        }
+        if (this.clouds) {
+            this.clouds.rotation.y += 0.0010;
+        }
+    }
+
+    // 获取可交互对象（用于射线检测）
+    getInteractiveObjects() {
+        return [this.earth, this.clouds];
+    }
+
+    // 获取地球组（用于转场旋转）
+    getGroup() {
+        return this.earthGroup;
+    }
+
+    // 获取大气层（用于悬停效果）
+    getAtmosphere() {
+        return this.atmosphere;
+    }
+
+    // 获取云层（用于转场淡出）
+    getClouds() {
+        return this.clouds;
+    }
+
+    // 销毁
+    dispose() {
+        if (this.earth) {
+            this.earth.geometry.dispose();
+            this.earth.material.dispose();
+        }
+        if (this.clouds) {
+            this.clouds.geometry.dispose();
+            this.clouds.material.dispose();
+        }
+        if (this.atmosphere) {
+            this.atmosphere.geometry.dispose();
+            this.atmosphere.material.dispose();
+            this.scene.remove(this.atmosphere);
+        }
+        if (this.earthGroup) {
+            this.scene.remove(this.earthGroup);
+        }
+    }
+}