diff --git a/packages/client-mobile/src/views/HomeView.vue b/packages/client-mobile/src/views/HomeView.vue
index 20d7095..ae1882d 100644
--- a/packages/client-mobile/src/views/HomeView.vue
+++ b/packages/client-mobile/src/views/HomeView.vue
@@ -1,16 +1,11 @@
 <script setup lang="ts">
-import { ref, onMounted } from 'vue';
+import { onMounted } from 'vue';
 import { useRouter } from 'vue-router';
 import { useConnectionStore } from '../stores/connection';
-import { showToast } from 'vant';
 
 const router = useRouter();
 const connectionStore = useConnectionStore();
 
-const userName = ref('');
-const userDept = ref('技术部');
-const isLoading = ref(false);
-
 // Check if already logged in
 onMounted(() => {
   if (connectionStore.userId && connectionStore.userName && connectionStore.userName !== '访客') {
@@ -18,26 +13,6 @@ onMounted(() => {
     router.replace('/vote');
   }
 });
-
-async function handleEnter() {
-  if (!userName.value.trim()) {
-    showToast('请输入您的姓名');
-    return;
-  }
-
-  isLoading.value = true;
-
-  // Generate a simple user ID (in production, this would come from auth)
-  const odrawId = `user_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
-
-  connectionStore.setUser(odrawId, userName.value.trim(), userDept.value);
-
-  // Wait for connection
-  await new Promise((resolve) => setTimeout(resolve, 500));
-
-  isLoading.value = false;
-  router.push('/vote');
-}
 </script>
 
 <template>
@@ -59,40 +34,27 @@ async function handleEnter() {
         <p class="subtitle">投票 · 抽奖 · 互动</p>
       </div>
 
-      <div class="form-section">
-        <div class="input-wrapper guochao-border">
-          <van-field
-            v-model="userName"
-            placeholder="请输入您的姓名"
-            :border="false"
-            clearable
-            maxlength="20"
-            @keyup.enter="handleEnter"
-          />
-        </div>
- 
-        <div class="input-wrapper guochao-border">
-          <van-field
-            v-model="userDept"
-            placeholder="请输入您的部门"
-            :border="false"
-            clearable
-            maxlength="20"
-            @keyup.enter="handleEnter"
-          />
+      <div class="scan-section">
+        <div class="scan-hint">
+          <van-icon name="scan" size="64" color="#c41230" />
+          <p class="hint-title">请使用微信扫码登录</p>
+          <p class="hint-desc">请前往大屏幕扫描二维码进入年会</p>
         </div>
 
-        <van-button
-          class="enter-btn"
-          type="primary"
-          block
-          round
-          :loading="isLoading"
-          loading-text="进入中..."
-          @click="handleEnter"
-        >
-          进入年会
-        </van-button>
+        <div class="steps">
+          <div class="step">
+            <span class="step-num">1</span>
+            <span class="step-text">前往大屏幕</span>
+          </div>
+          <div class="step">
+            <span class="step-num">2</span>
+            <span class="step-text">微信扫描二维码</span>
+          </div>
+          <div class="step">
+            <span class="step-num">3</span>
+            <span class="step-text">授权后自动登录</span>
+          </div>
+        </div>
       </div>
 
       <!-- Features -->
@@ -240,31 +202,58 @@ async function handleEnter() {
   }
 }
 
-.form-section {
+.scan-section {
   margin-bottom: $spacing-xl;
+  text-align: center;
 
-  .input-wrapper {
-    background: $color-bg-card;
-    margin-bottom: $spacing-md;
-    padding: $spacing-xs;
+  .scan-hint {
+    margin-bottom: $spacing-xl;
 
-    :deep(.van-field) {
-      background: transparent;
+    .hint-title {
+      font-size: $font-size-xl;
+      font-weight: bold;
+      color: $color-text-primary;
+      margin: $spacing-md 0 $spacing-xs;
+    }
 
-      .van-field__control {
-        text-align: center;
-        font-size: $font-size-lg;
-      }
+    .hint-desc {
+      font-size: $font-size-md;
+      color: $color-text-secondary;
     }
   }
 
-  .enter-btn {
-    background: linear-gradient(135deg, $color-primary-light 0%, $color-primary 100%);
-    border: none;
-    height: 48px;
-    font-size: $font-size-lg;
-    font-weight: 500;
-    box-shadow: $shadow-md;
+  .steps {
+    display: flex;
+    justify-content: center;
+    gap: $spacing-lg;
+    padding: $spacing-md;
+    background: rgba($color-primary, 0.05);
+    border-radius: $radius-lg;
+  }
+
+  .step {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: $spacing-xs;
+  }
+
+  .step-num {
+    width: 28px;
+    height: 28px;
+    border-radius: 50%;
+    background: $color-primary;
+    color: white;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-weight: bold;
+    font-size: $font-size-sm;
+  }
+
+  .step-text {
+    font-size: $font-size-xs;
+    color: $color-text-secondary;
   }
 }
 
diff --git a/packages/client-screen/src/components/QRCodeLogin.vue b/packages/client-screen/src/components/QRCodeLogin.vue
index 1f4a469..f92b48b 100644
--- a/packages/client-screen/src/components/QRCodeLogin.vue
+++ b/packages/client-screen/src/components/QRCodeLogin.vue
@@ -6,7 +6,7 @@ import { SOCKET_EVENTS } from '@gala/shared/constants';
 import type { ScanStatusUpdatePayload, ScanLoginStatus } from '@gala/shared/types';
 
 const emit = defineEmits<{
-  (e: 'login-success', data: { userId: string; userName: string; department: string; sessionToken: string }): void;
+  (e: 'login-success', data: { userId: string; userName: string; sessionToken: string }): void;
   (e: 'login-cancel'): void;
 }>();
 
@@ -125,7 +125,6 @@ function handleStatusUpdate(data: ScanStatusUpdatePayload) {
     emit('login-success', {
       userId: data.userInfo.userId,
       userName: data.userInfo.userName,
-      department: data.userInfo.department,
       sessionToken: data.userInfo.sessionToken,
     });
   }
diff --git a/packages/client-screen/src/pixi/BackgroundEffect.ts b/packages/client-screen/src/pixi/BackgroundEffect.ts
index 0dde0d6..d6f45c8 100644
--- a/packages/client-screen/src/pixi/BackgroundEffect.ts
+++ b/packages/client-screen/src/pixi/BackgroundEffect.ts
@@ -6,8 +6,22 @@ const COLORS = {
   gold: 0xf0c239,
   goldDark: 0xd4a84b,
   goldLight: 0xffd700,
+  // Firework colors
+  fireworkRed: 0xff4444,
+  fireworkOrange: 0xff8844,
+  fireworkYellow: 0xffdd44,
+  fireworkPink: 0xff66aa,
+  fireworkWhite: 0xffffee,
 };
 
+// Firework color palettes
+const FIREWORK_PALETTES = [
+  [COLORS.gold, COLORS.goldLight, COLORS.fireworkYellow],
+  [COLORS.fireworkRed, COLORS.fireworkOrange, COLORS.fireworkYellow],
+  [COLORS.fireworkPink, COLORS.fireworkWhite, COLORS.gold],
+  [COLORS.goldDark, COLORS.gold, COLORS.fireworkWhite],
+];
+
 interface Particle {
   x: number;
   y: number;
@@ -17,9 +31,11 @@ interface Particle {
   alpha: number;
   rotation: number;
   rotationSpeed: number;
-  type: 'dust' | 'symbol' | 'streak';
+  type: 'dust' | 'symbol' | 'streak' | 'firework-trail' | 'firework-spark';
   life: number;
   maxLife: number;
+  color?: number;
+  gravity?: number;
 }
 
 export class BackgroundEffect {
@@ -29,6 +45,7 @@ export class BackgroundEffect {
   private dustLayer: Graphics;
   private symbolLayer: Graphics;
   private streakLayer: Graphics;
+  private fireworkLayer: Graphics;
   private time = 0;
   private windOffset = 0;
   private isDestroyed = false;
@@ -37,6 +54,7 @@ export class BackgroundEffect {
   private readonly DUST_COUNT = 120;
   private readonly SYMBOL_COUNT = 25;
   private readonly STREAK_INTERVAL = 3000; // ms between streaks
+  private readonly FIREWORK_INTERVAL = 4000; // ms between fireworks
 
   constructor() {
     this.app = new Application();
@@ -44,6 +62,7 @@ export class BackgroundEffect {
     this.dustLayer = new Graphics();
     this.symbolLayer = new Graphics();
     this.streakLayer = new Graphics();
+    this.fireworkLayer = new Graphics();
   }
 
   async init(canvas: HTMLCanvasElement): Promise<void> {
@@ -61,6 +80,7 @@ export class BackgroundEffect {
     this.container.addChild(this.dustLayer);
     this.container.addChild(this.symbolLayer);
     this.container.addChild(this.streakLayer);
+    this.container.addChild(this.fireworkLayer);
     this.app.stage.addChild(this.container);
 
     // Draw vignette overlay
@@ -76,6 +96,9 @@ export class BackgroundEffect {
     // Spawn streaks periodically
     this.spawnStreakLoop();
 
+    // Spawn fireworks periodically
+    this.spawnFireworkLoop();
+
     // Handle resize
     window.addEventListener('resize', this.handleResize.bind(this));
   }
@@ -157,6 +180,78 @@ export class BackgroundEffect {
     setTimeout(() => this.spawnStreakLoop(), this.STREAK_INTERVAL + Math.random() * 2000);
   }
 
+  private spawnFireworkLoop(): void {
+    if (this.isDestroyed) return;
+
+    this.launchFirework();
+    setTimeout(() => this.spawnFireworkLoop(), this.FIREWORK_INTERVAL + Math.random() * 3000);
+  }
+
+  private launchFirework(): void {
+    if (this.isDestroyed) return;
+
+    const w = this.app.screen.width;
+    const h = this.app.screen.height;
+
+    // Random launch position from bottom
+    const startX = w * 0.2 + Math.random() * w * 0.6;
+    const startY = h;
+
+    // Target explosion point
+    const targetY = h * 0.2 + Math.random() * h * 0.3;
+
+    // Calculate velocity to reach target
+    const flightTime = 60 + Math.random() * 30; // frames
+    const vy = -(startY - targetY) / flightTime - 0.5 * 0.15 * flightTime;
+
+    // Select color palette for this firework
+    const palette = FIREWORK_PALETTES[Math.floor(Math.random() * FIREWORK_PALETTES.length)];
+
+    // Create trail particle (the rising firework)
+    this.particles.push({
+      x: startX,
+      y: startY,
+      vx: (Math.random() - 0.5) * 0.5,
+      vy: vy,
+      size: 3,
+      alpha: 1,
+      rotation: 0,
+      rotationSpeed: 0,
+      type: 'firework-trail',
+      life: 0,
+      maxLife: flightTime,
+      color: palette[0],
+      gravity: 0.15,
+    });
+  }
+
+  private explodeFirework(x: number, y: number): void {
+    const palette = FIREWORK_PALETTES[Math.floor(Math.random() * FIREWORK_PALETTES.length)];
+    const sparkCount = 40 + Math.floor(Math.random() * 30);
+
+    for (let i = 0; i < sparkCount; i++) {
+      const angle = (Math.PI * 2 * i) / sparkCount + (Math.random() - 0.5) * 0.3;
+      const speed = 3 + Math.random() * 4;
+      const color = palette[Math.floor(Math.random() * palette.length)];
+
+      this.particles.push({
+        x: x,
+        y: y,
+        vx: Math.cos(angle) * speed,
+        vy: Math.sin(angle) * speed,
+        size: 2 + Math.random() * 2,
+        alpha: 1,
+        rotation: 0,
+        rotationSpeed: 0,
+        type: 'firework-spark',
+        life: 0,
+        maxLife: 50 + Math.random() * 30,
+        color: color,
+        gravity: 0.08,
+      });
+    }
+  }
+
   private update(ticker: Ticker): void {
     if (this.isDestroyed) return;
 
@@ -167,6 +262,7 @@ export class BackgroundEffect {
     this.dustLayer.clear();
     this.symbolLayer.clear();
     this.streakLayer.clear();
+    this.fireworkLayer.clear();
 
     const w = this.app.screen.width;
     const h = this.app.screen.height;
@@ -185,6 +281,25 @@ export class BackgroundEffect {
           return false;
         }
         p.alpha = 0.9 * (1 - p.life / p.maxLife);
+      } else if (p.type === 'firework-trail') {
+        // Apply gravity
+        p.vy += p.gravity || 0.15;
+        if (p.life >= p.maxLife) {
+          // Explode at the end
+          this.explodeFirework(p.x, p.y);
+          return false;
+        }
+        p.alpha = 1;
+      } else if (p.type === 'firework-spark') {
+        // Apply gravity and friction
+        p.vy += p.gravity || 0.08;
+        p.vx *= 0.98;
+        p.vy *= 0.98;
+        if (p.life >= p.maxLife) {
+          return false;
+        }
+        p.alpha = 1 - (p.life / p.maxLife);
+        p.size *= 0.995;
       } else if (p.type === 'symbol') {
         // Reset symbols that go off top
         if (p.y < -20) {
@@ -210,7 +325,9 @@ export class BackgroundEffect {
       ? this.dustLayer
       : p.type === 'symbol'
         ? this.symbolLayer
-        : this.streakLayer;
+        : (p.type === 'firework-trail' || p.type === 'firework-spark')
+          ? this.fireworkLayer
+          : this.streakLayer;
 
     if (p.type === 'dust') {
       // Simple gold circle
@@ -250,6 +367,35 @@ export class BackgroundEffect {
       // Draw head
       layer.circle(p.x, p.y, p.size);
       layer.fill({ color: COLORS.goldLight, alpha: p.alpha });
+    } else if (p.type === 'firework-trail') {
+      // Rising firework with sparkle trail
+      const trailLength = 30;
+      for (let i = 0; i < 8; i++) {
+        const ratio = i / 8;
+        const tx = p.x + (Math.random() - 0.5) * 3;
+        const ty = p.y + ratio * trailLength;
+        const ta = p.alpha * (1 - ratio) * 0.6;
+        const ts = p.size * (1 - ratio * 0.5);
+        layer.circle(tx, ty, ts);
+        layer.fill({ color: p.color || COLORS.gold, alpha: ta });
+      }
+      // Bright head
+      layer.circle(p.x, p.y, p.size + 1);
+      layer.fill({ color: COLORS.fireworkWhite, alpha: p.alpha });
+    } else if (p.type === 'firework-spark') {
+      // Exploding spark with small trail
+      const trailLen = 5;
+      for (let i = 0; i < 3; i++) {
+        const ratio = i / 3;
+        const tx = p.x - p.vx * ratio * trailLen;
+        const ty = p.y - p.vy * ratio * trailLen;
+        const ta = p.alpha * (1 - ratio) * 0.5;
+        layer.circle(tx, ty, p.size * (1 - ratio * 0.3));
+        layer.fill({ color: p.color || COLORS.gold, alpha: ta });
+      }
+      // Spark head
+      layer.circle(p.x, p.y, p.size);
+      layer.fill({ color: p.color || COLORS.gold, alpha: p.alpha });
     }
   }
 
diff --git a/packages/client-screen/src/views/MainDisplay.vue b/packages/client-screen/src/views/MainDisplay.vue
index 32d0dbd..83ee6cf 100644
--- a/packages/client-screen/src/views/MainDisplay.vue
+++ b/packages/client-screen/src/views/MainDisplay.vue
@@ -13,7 +13,7 @@ const showQRLogin = ref(false);
 // Mobile URL for entry QR code - use environment variable or fallback to current origin
 const mobileUrl = import.meta.env.VITE_MOBILE_URL || window.location.origin;
 
-function handleLoginSuccess(data: { userId: string; userName: string; department: string; sessionToken: string }) {
+function handleLoginSuccess(data: { userId: string; userName: string; sessionToken: string }) {
   console.log('Login success:', data);
   showQRLogin.value = false;
   // 可以在这里处理登录成功后的逻辑
diff --git a/packages/server/src/app.ts b/packages/server/src/app.ts
index 97c9391..cd5e975 100644
--- a/packages/server/src/app.ts
+++ b/packages/server/src/app.ts
@@ -2,6 +2,7 @@ import express, { Application } from 'express';
 import cors from 'cors';
 import helmet from 'helmet';
 import compression from 'compression';
+import path from 'path';
 import { config } from './config';
 import { logger } from './utils/logger';
 import { errorHandler } from './middleware/errorHandler';
@@ -51,6 +52,9 @@ app.use(express.urlencoded({ extended: true }));
 // Request logging
 app.use(requestLogger);
 
+// Static files (for WeChat domain verification, etc.)
+app.use(express.static(path.join(__dirname, '../public')));
+
 // Health check
 app.get('/health', (_req, res) => {
   res.json({ status: 'ok', timestamp: new Date().toISOString() });
diff --git a/packages/shared/src/types/scan-login.types.ts b/packages/shared/src/types/scan-login.types.ts
index 4c9cfa6..82aaee6 100644
--- a/packages/shared/src/types/scan-login.types.ts
+++ b/packages/shared/src/types/scan-login.types.ts
@@ -11,7 +11,6 @@ export interface ScanTokenData {
   userInfo?: {
     userId: string;
     userName: string;
-    department: string;
   };
 }
 
@@ -38,7 +37,6 @@ export interface ValidateTokenResponse {
 export interface ScanConfirmPayload {
   scanToken: string;
   userName: string;
-  department: string;
 }
 
 export interface ScanConfirmResponse {
@@ -56,7 +54,6 @@ export interface ScanStatusUpdatePayload {
   userInfo?: {
     userId: string;
     userName: string;
-    department: string;
     sessionToken: string;
   };
 }