diff --git a/src/components/GlobalVision.jsx b/src/components/GlobalVision.jsx
index e66643d..839c5a1 100644
--- a/src/components/GlobalVision.jsx
+++ b/src/components/GlobalVision.jsx
@@ -31,6 +31,18 @@ export default function GlobalVision() {
     window.dispatchEvent(new CustomEvent('dpm:hand-track', { detail: { hands: vision.hands } }));
   }, [vision.hands]);
 
+  // 视觉识别状态广播：dpm:vision-status（页眉图标展示全部视觉相关状态）
+  useEffect(() => {
+    window.dispatchEvent(new CustomEvent('dpm:vision-status', {
+      detail: {
+        status: vision.status,      // off|loading|detecting|facing|triggered|silent|error
+        cameraOn: vision.cameraOn,
+        gesture: vision.gesture,    // raise 等最近一次手势
+        faces: vision.faces,
+      },
+    }));
+  }, [vision.status, vision.cameraOn, vision.gesture, vision.faces]);
+
   return (
     <>
       {/* 摄像头驱动（隐藏，仅供全局抽帧识别） */}
diff --git a/src/components/PageHeader.jsx b/src/components/PageHeader.jsx
index 6db3574..1fc4036 100644
--- a/src/components/PageHeader.jsx
+++ b/src/components/PageHeader.jsx
@@ -24,6 +24,7 @@ export default function PageHeader() {
   const [now, setNow] = useState(new Date());
   const [aboutOpen, setAboutOpen] = useState(false);
   const [gestureHit, setGestureHit] = useState(false); // 识别到手势 → 惊喜图标 3s
+  const [vision, setVision] = useState({ status: 'off', cameraOn: false, gesture: null }); // 视觉识别状态
   const pageIdx = usePageIndex();
   const gestureTimer = useRef(null);
 
@@ -32,7 +33,7 @@ export default function PageHeader() {
     return () => clearInterval(iv);
   }, []);
 
-  // 全局手势事件 → 右上角状态图标（默认灰色探索 → 识别到手势变绿色惊喜）
+  // 全局手势事件 → 惊喜图标 3s
   useEffect(() => {
     const onGesture = (e) => {
       if (!e.detail || !e.detail.type) return;
@@ -47,6 +48,17 @@ export default function PageHeader() {
     };
   }, []);
 
+  // 视觉识别状态（GlobalVision 广播）：off/loading/detecting/facing/triggered/silent/error
+  useEffect(() => {
+    const onStatus = (e) => setVision(e.detail || {});
+    window.addEventListener('dpm:vision-status', onStatus);
+    return () => window.removeEventListener('dpm:vision-status', onStatus);
+  }, []);
+
+  // 图标状态：手势(绿) > 视觉识别中(浅蓝) > 默认(灰)
+  const visionActive = vision.cameraOn && vision.status !== 'error' && vision.status !== 'off';
+  const visionError = vision.status === 'error';
+
   const dateStr = `${now.getFullYear()}-${String(now.getMonth() + 1).padStart(2, '0')}-${String(now.getDate()).padStart(2, '0')}`;
   const week = ['日', '一', '二', '三', '四', '五', '六'][now.getDay()];
   const timeStr = now.toLocaleTimeString('zh-CN', { hour12: false });
@@ -101,9 +113,9 @@ export default function PageHeader() {
           {status}
         </div>
         <button
-          className={`bd-about-btn${gestureHit ? ' gesture-hit' : ''}`}
+          className={`bd-about-btn${gestureHit ? ' gesture-hit' : visionActive ? ' vision-active' : visionError ? ' vision-error' : ''}`}
           type="button"
-          title={gestureHit ? '识别到手势' : '关于 PineSound'}
+          title={gestureHit ? '识别到手势' : visionActive ? `视觉识别中（${vision.status}）` : visionError ? '视觉识别异常' : '关于 PineSound'}
           aria-label="关于 PineSound"
           onClick={() => setAboutOpen(true)}
         >
diff --git a/src/pages/VoiceAssistant.jsx b/src/pages/VoiceAssistant.jsx
index 419da1b..4522822 100644
--- a/src/pages/VoiceAssistant.jsx
+++ b/src/pages/VoiceAssistant.jsx
@@ -133,7 +133,7 @@ export default function VoiceAssistant() {
   const live = LIVE_STATES.has(state);
 
   // ── 自动问候生命周期状态（须在 start 之前定义：start 依赖数组引用 sendGreeting）──
-  const GREETING_TEXT = '你好！欢迎来到园区，我是智能语音助手，请问有什么可以帮你的吗？';
+  const GREETING_TEXT = '您好呀，需要我的帮助吗？';
   const GREETING_WAIT_MS = 25000; // 问候播完后等待用户回答的超时
   const voiceStateRef = useRef(state);
   voiceStateRef.current = state;
diff --git a/src/pages/voice-overrides.css b/src/pages/voice-overrides.css
index d4ccd8b..18c6989 100644
--- a/src/pages/voice-overrides.css
+++ b/src/pages/voice-overrides.css
@@ -159,7 +159,7 @@
 
 /* ============ 语音气泡：持续展示 · 最新大字 · 历史小字 ============ */
 .bubble {
-  color: #1d2c44; /* 浅色背景适配（原版深色文字在浅色下不可见） */
+  color: #4cc2ff; /* 浅蓝色文本（视觉识别对话风格） */
 }
 .bubble .bubble-role {
   font-size: 10px;
@@ -172,13 +172,13 @@
   font-size: 21px;
   font-weight: 600;
   line-height: 1.45;
-  color: #1d2c44;
+  color: #4cc2ff;
   text-shadow: 0 1px 0 rgba(255, 255, 255, 0.6);
 }
 /* 历史消息：小字，向上排列 */
 .bubble.history .bubble-body {
   font-size: 12.5px;
   line-height: 1.5;
-  color: #4a5b76;
+  color: #6fb5ea;
   opacity: 0.88;
 }
diff --git a/src/styles/datascreen.css b/src/styles/datascreen.css
index 06c702a..f500acf 100644
--- a/src/styles/datascreen.css
+++ b/src/styles/datascreen.css
@@ -2599,6 +2599,24 @@
   0%, 100% { box-shadow: 0 0 8px rgba(23, 178, 106, 0.3); transform: scale(1); }
   50% { box-shadow: 0 0 18px rgba(23, 178, 106, 0.6); transform: scale(1.08); }
 }
+/* 视觉识别中：浅蓝色（摄像头开启 / 检测中 / 面向 / 触发） */
+.bd-about-btn.vision-active {
+  color: var(--bd-cyan, #4cc2ff);
+  border-color: rgba(76, 194, 255, 0.5);
+  background: rgba(76, 194, 255, 0.1);
+  box-shadow: 0 0 10px rgba(76, 194, 255, 0.35);
+  animation: bdVisionPulse 2s ease-in-out infinite;
+}
+@keyframes bdVisionPulse {
+  0%, 100% { box-shadow: 0 0 6px rgba(76, 194, 255, 0.25); }
+  50% { box-shadow: 0 0 14px rgba(76, 194, 255, 0.5); }
+}
+/* 视觉识别异常：红色 */
+.bd-about-btn.vision-error {
+  color: var(--bd-red, #f04438);
+  border-color: rgba(240, 68, 56, 0.5);
+  background: rgba(240, 68, 56, 0.08);
+}
 
 .about-overlay {
   position: fixed;