diff --git a/inventory-web/src/components/QrScanner/index.vue b/inventory-web/src/components/QrScanner/index.vue
index 9987ecf..0f8b633 100644
--- a/inventory-web/src/components/QrScanner/index.vue
+++ b/inventory-web/src/components/QrScanner/index.vue
@@ -12,7 +12,7 @@
     <div class="focus-tip success" v-if="isPaused">
       <div class="scan-text-success">
         <el-icon><CircleCheckFilled /></el-icon>
-        扫描成功，3秒后继续...
+        扫描成功，2秒后继续...
       </div>
     </div>
 
@@ -50,6 +50,43 @@ const zoomMin = ref(1)
 const zoomMax = ref(5)
 const currentZoom = ref(1)
 
+// 音频上下文
+let audioCtx: AudioContext | null = null;
+
+// 提示音播放函数
+const playBeep = () => {
+  try {
+    const AudioContext = window.AudioContext || (window as any).webkitAudioContext;
+    if (!AudioContext) return;
+
+    if (!audioCtx) {
+      audioCtx = new AudioContext();
+    }
+
+    if (audioCtx.state === 'suspended') {
+      audioCtx.resume();
+    }
+
+    const oscillator = audioCtx.createOscillator();
+    const gainNode = audioCtx.createGain();
+
+    oscillator.connect(gainNode);
+    gainNode.connect(audioCtx.destination);
+
+    // 三角波，清脆响亮
+    oscillator.type = 'triangle';
+    oscillator.frequency.value = 1500;
+
+    gainNode.gain.setValueAtTime(1.0, audioCtx.currentTime);
+
+    oscillator.start();
+    oscillator.stop(audioCtx.currentTime + 0.1);
+
+  } catch (e) {
+    console.error("播放提示音失败:", e);
+  }
+};
+
 const startScanning = async () => {
   try {
     html5QrCode = new Html5Qrcode(scannerElementId, {
@@ -63,16 +100,16 @@ const startScanning = async () => {
 
     const config = {
       fps: 20,
-      // ★★★ 核心修改点 2：移除了 qrbox 属性 ★★★
-      // 移除后，库默认会对每一帧的“全画面”进行解析，不再局限于中间区域
-      // qrbox: { width: 300, height: 100 },
-
       disableFlip: false,
       videoConstraints: {
         facingMode: "environment",
-        // 保持高分辨率以支持微小条码
-        width: { min: 1280, ideal: 3840, max: 3840 },
-        height: { min: 720, ideal: 2160, max: 2160 },
+        // ★★★ 核心修改：设置为 2K (QHD) 分辨率 ★★★
+        // min: 1280x720 (保证低端机能启动)
+        // ideal: 2560x1440 (2K QHD，清晰度与性能的平衡点)
+        width: { min: 1280, ideal: 2560, max: 3840 },
+        height: { min: 720, ideal: 1440, max: 2160 },
+        // 16:9 的比例
+        aspectRatio: { ideal: 1.7777777778 },
         focusMode: "continuous",
         advanced: [{ focusMode: "macro" }, { zoom: 2.0 }]
       }
@@ -84,14 +121,18 @@ const startScanning = async () => {
         (decodedText) => {
           if (isPaused.value) return
           console.log(`Scan: ${decodedText}`)
+
           isPaused.value = true
+
+          playBeep();
+
           emit('decode', decodedText)
 
           if (navigator.vibrate) navigator.vibrate(200);
 
           setTimeout(() => {
             isPaused.value = false
-          }, 3000)
+          }, 2000)
         },
         (errorMessage) => {
           // ignore
@@ -103,12 +144,14 @@ const startScanning = async () => {
   } catch (err: any) {
     let msg = '无法启动摄像头'
     console.error("Scanner Error:", err)
+    if (err.name === 'OverconstrainedError') {
+      msg = '摄像头不支持 2K 分辨率，请尝试降低配置'
+    }
     errorMsg.value = msg
     emit('error', msg)
   }
 }
 
-// 检测硬件变焦能力
 const checkZoomCapability = () => {
   if (!html5QrCode) return
 
@@ -130,7 +173,6 @@ const checkZoomCapability = () => {
   }
 }
 
-// 处理滑块拖动
 const handleZoom = () => {
   if (!html5QrCode) return
 
@@ -154,9 +196,19 @@ const stopScanning = async () => {
       console.error("Stop failed", e)
     }
   }
+
+  if (audioCtx) {
+    audioCtx.close();
+    audioCtx = null;
+  }
 }
 
 onMounted(() => {
+  try {
+    const AudioContext = window.AudioContext || (window as any).webkitAudioContext;
+    if (AudioContext) audioCtx = new AudioContext();
+  } catch(e) {}
+
   setTimeout(() => {
     startScanning()
   }, 500)
@@ -178,7 +230,6 @@ onUnmounted(() => {
   justify-content: center;
   align-items: center;
   overflow: hidden;
-  /* 如果是全屏模式，这里不需要圆角，或者保持圆角视你的UI设计而定 */
   border-radius: 0;
 }
 
@@ -214,14 +265,12 @@ onUnmounted(() => {
   z-index: 20;
 }
 
-/* --- ★ 修改点 3：视觉层 CSS 更新 --- */
 .focus-tip {
   position: absolute;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
-  /* 移除了 border 和 box-shadow，不再显示红框和黑色遮罩 */
   pointer-events: none;
   z-index: 10;
   display: flex;
@@ -230,23 +279,21 @@ onUnmounted(() => {
 }
 
 .focus-tip.success {
-  background: rgba(103, 194, 58, 0.2); /* 成功时全屏微微泛绿 */
+  background: rgba(103, 194, 58, 0.2);
 }
 
-/* 扫描线改为全屏宽度 */
 .scan-line {
   width: 100%;
   height: 2px;
   background: rgba(255, 0, 0, 0.5);
   box-shadow: 0 0 4px rgba(255, 0, 0, 0.8);
   position: absolute;
-  /* 动画范围从 10% 到 90% */
   animation: scan-move 2.5s infinite linear;
 }
 
 .scan-text {
   position: absolute;
-  bottom: 150px; /* 调整文字位置 */
+  bottom: 150px;
   color: rgba(255, 255, 255, 0.8);
   font-size: 14px;
   text-shadow: 0 1px 3px rgba(0,0,0,0.8);
@@ -275,7 +322,6 @@ onUnmounted(() => {
   100% { top: 100%; opacity: 0; }
 }
 
-/* 变焦控制器 */
 .zoom-control {
   position: absolute;
   bottom: 80px;
diff --git a/inventory-web/src/layout/index.vue b/inventory-web/src/layout/index.vue
index e2909e7..a5d1950 100644
--- a/inventory-web/src/layout/index.vue
+++ b/inventory-web/src/layout/index.vue
@@ -22,7 +22,7 @@ import AppMain from './components/AppMain.vue'
 }
 
 .sidebar-container {
-  width: 210px; /* 固定侧边栏宽度 */
+  width: 180px; /* 固定侧边栏宽度 */
   height: 100%;
   background-color: #304156; /* 侧边栏背景色 */
   flex-shrink: 0; /* 防止被挤压 */
@@ -37,7 +37,7 @@ import AppMain from './components/AppMain.vue'
   flex-direction: column;
   overflow-y: auto; /* 关键：页面内容过多时，只在右侧区域滚动 */
   background-color: #f0f2f5; /* 右侧灰色背景，让白色卡片更明显 */
-  padding: 20px; /* 给内部页面留出边距 */
+  padding: 10px; /* 给内部页面留出边距 */
   box-sizing: border-box;
 }
 </style>
\ No newline at end of file