diff --git a/.gitignore b/.gitignore
index 5ea14dd..4e4cab1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,11 +2,13 @@
 gen_software_detail.py
 update_site.py
 update_address.py
+add_logo.py
 
 # 备份与临时文件
 .bak-before-update/
 .bak-address/
 .bak-dedup/
+.bak-logo/
 .snap1/
 run1/
 *.bak
diff --git a/about.html b/about.html
index d862129..46cd93e 100644
--- a/about.html
+++ b/about.html
@@ -4,6 +4,10 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="512x512" href="/assets/icon-512.png">
 <style>
 *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
 :root{
@@ -20,7 +24,9 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
 /* ===== 导航 ===== */
 .nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:70px;box-shadow:0 1px 6px rgba(0,0,0,.04)}
 .nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
-.nav-logo{font-size:1.3rem;font-weight:800;color:var(--primary);text-decoration:none;letter-spacing:.5px}
+.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
+.nav-logo img{width:auto;height:28px;display:block;flex:0 0 auto}
+.nav-logo span{font-size:1.1rem;font-weight:800;color:var(--primary);letter-spacing:.5px;line-height:1}
 .nav-links{display:flex;list-style:none;align-items:center;height:100%}
 .nav-links>li{position:relative;height:100%}
 .nav-links>li>a{display:flex;align-items:center;height:100%;padding:0 14px;color:var(--text);text-decoration:none;font-size:.9rem;transition:color .2s;white-space:nowrap}
@@ -148,23 +154,25 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
 <meta property="og:title" content="关于我们 — 用AI让每一家企业都能用上 — 千视科技">
 <meta property="og:description" content="关于千视科技：成立于2019年，专注AI智能体技术研发与应用，服务500+企业客户，提供企业智能体、AI拓客、AI推广与软件定制开发服务。">
 <meta property="og:url" content="https://qianshi.cool/about.html">
-<meta property="og:image" content="https://qianshi.cool/assets/wechat-service.png">
-<meta property="og:image:width" content="594">
-<meta property="og:image:height" content="594">
+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
+<meta property="og:image:width" content="1200">
+<meta property="og:image:height" content="630">
 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="关于我们 — 用AI让每一家企业都能用上 — 千视科技">
 <meta name="twitter:description" content="关于千视科技：成立于2019年，专注AI智能体技术研发与应用，服务500+企业客户，提供企业智能体、AI拓客、AI推广与软件定制开发服务。">
-<meta name="twitter:image" content="https://qianshi.cool/assets/wechat-service.png">
+<meta name="twitter:image" content="https://qianshi.cool/assets/og-image.png">
 <script type="application/ld+json">
-{"@context": "https://schema.org", "@type": "Organization", "name": "千视科技", "alternateName": "Qianshi Tech", "url": "https://qianshi.cool", "logo": "https://qianshi.cool/assets/wechat-service.png", "description": "千视科技：企业智能体、AI拓客、AI推广、软件定制开发，一站式AI数字化增长服务商。", "foundingDate": "2019", "address": {"@type": "PostalAddress", "streetAddress": "宝安区西乡街道固戍一路塘西综合楼洪辉科创空间A314", "addressLocality": "深圳市", "addressRegion": "广东省", "postalCode": "518100", "addressCountry": "CN"}, "geo": {"@type": "GeoCoordinates", "latitude": 22.599684, "longitude": 113.85247}, "contactPoint": {"@type": "ContactPoint", "telephone": "18948732299", "contactType": "sales", "areaServed": "CN", "availableLanguage": ["zh-CN", "en"]}, "sameAs": ["https://qianshi.cool/blog.html", "https://qianshi.cool/cases.html", "https://qianshi.cool/news.html"], "hasBreadcrumb": {"@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "首页", "item": "https://qianshi.cool/"}, {"@type": "ListItem", "position": 2, "name": "关于我们", "item": "https://qianshi.cool/about.html"}]}}
+{"@context": "https://schema.org", "@type": "Organization", "name": "千视科技", "alternateName": "Qianshi Tech", "url": "https://qianshi.cool", "logo": "https://qianshi.cool/assets/logo.png", "description": "千视科技：企业智能体、AI拓客、AI推广、软件定制开发，一站式AI数字化增长服务商。", "foundingDate": "2019", "address": {"@type": "PostalAddress", "streetAddress": "宝安区西乡街道固戍一路塘西综合楼洪辉科创空间A314", "addressLocality": "深圳市", "addressRegion": "广东省", "postalCode": "518100", "addressCountry": "CN"}, "geo": {"@type": "GeoCoordinates", "latitude": 22.599684, "longitude": 113.85247}, "contactPoint": {"@type": "ContactPoint", "telephone": "18948732299", "contactType": "sales", "areaServed": "CN", "availableLanguage": ["zh-CN", "en"]}, "sameAs": ["https://qianshi.cool/blog.html", "https://qianshi.cool/cases.html", "https://qianshi.cool/news.html"], "hasBreadcrumb": {"@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "首页", "item": "https://qianshi.cool/"}, {"@type": "ListItem", "position": 2, "name": "关于我们", "item": "https://qianshi.cool/about.html"}]}}
 </script>
 </head>
 <body>
 
 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
     <ul class="nav-links" id="navLinks">
       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
       <li class="has-sub">
@@ -314,6 +322,8 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
         <div style="font-size:1.3rem;font-weight:700;color:#fff">18948732299</div>
         <div style="margin-top:4px;color:#a8b3d4">105920869@qq.com</div>
diff --git a/ai-acquisition.html b/ai-acquisition.html
index 6735501..5d4e315 100644
--- a/ai-acquisition.html
+++ b/ai-acquisition.html
@@ -4,6 +4,10 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="512x512" href="/assets/icon-512.png">
 <style>
 *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
 :root{
@@ -20,7 +24,9 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
 /* ===== 导航 ===== */
 .nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:70px;box-shadow:0 1px 6px rgba(0,0,0,.04)}
 .nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
-.nav-logo{font-size:1.3rem;font-weight:800;color:var(--primary);text-decoration:none;letter-spacing:.5px}
+.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
+.nav-logo img{width:auto;height:28px;display:block;flex:0 0 auto}
+.nav-logo span{font-size:1.1rem;font-weight:800;color:var(--primary);letter-spacing:.5px;line-height:1}
 .nav-links{display:flex;list-style:none;align-items:center;height:100%}
 .nav-links>li{position:relative;height:100%}
 .nav-links>li>a{display:flex;align-items:center;height:100%;padding:0 14px;color:var(--text);text-decoration:none;font-size:.9rem;transition:color .2s;white-space:nowrap}
@@ -148,23 +154,25 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
 <meta property="og:title" content="AI拓客 — 数据驱动的智能获客让线索翻倍 — 千视科技">
 <meta property="og:description" content="AI拓客解决方案：Superlink精准触达+EDM邮件营销双引擎，基于数据建模锁定高意向客户并自动跟进转化，获客成本大幅下降，线索量翻倍。支持定制开发。">
 <meta property="og:url" content="https://qianshi.cool/ai-acquisition.html">
-<meta property="og:image" content="https://qianshi.cool/assets/wechat-service.png">
-<meta property="og:image:width" content="594">
-<meta property="og:image:height" content="594">
+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
+<meta property="og:image:width" content="1200">
+<meta property="og:image:height" content="630">
 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="AI拓客 — 数据驱动的智能获客让线索翻倍 — 千视科技">
 <meta name="twitter:description" content="AI拓客解决方案：Superlink精准触达+EDM邮件营销双引擎，基于数据建模锁定高意向客户并自动跟进转化，获客成本大幅下降，线索量翻倍。支持定制开发。">
-<meta name="twitter:image" content="https://qianshi.cool/assets/wechat-service.png">
+<meta name="twitter:image" content="https://qianshi.cool/assets/og-image.png">
 <script type="application/ld+json">
-{"@context": "https://schema.org", "@type": "Organization", "name": "千视科技", "alternateName": "Qianshi Tech", "url": "https://qianshi.cool", "logo": "https://qianshi.cool/assets/wechat-service.png", "description": "千视科技：企业智能体、AI拓客、AI推广、软件定制开发，一站式AI数字化增长服务商。", "foundingDate": "2019", "address": {"@type": "PostalAddress", "streetAddress": "宝安区西乡街道固戍一路塘西综合楼洪辉科创空间A314", "addressLocality": "深圳市", "addressRegion": "广东省", "postalCode": "518100", "addressCountry": "CN"}, "geo": {"@type": "GeoCoordinates", "latitude": 22.599684, "longitude": 113.85247}, "contactPoint": {"@type": "ContactPoint", "telephone": "18948732299", "contactType": "sales", "areaServed": "CN", "availableLanguage": ["zh-CN", "en"]}, "sameAs": ["https://qianshi.cool/blog.html", "https://qianshi.cool/cases.html", "https://qianshi.cool/news.html"], "hasBreadcrumb": {"@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "首页", "item": "https://qianshi.cool/"}, {"@type": "ListItem", "position": 2, "name": "AI拓客", "item": "https://qianshi.cool/ai-acquisition.html"}]}}
+{"@context": "https://schema.org", "@type": "Organization", "name": "千视科技", "alternateName": "Qianshi Tech", "url": "https://qianshi.cool", "logo": "https://qianshi.cool/assets/logo.png", "description": "千视科技：企业智能体、AI拓客、AI推广、软件定制开发，一站式AI数字化增长服务商。", "foundingDate": "2019", "address": {"@type": "PostalAddress", "streetAddress": "宝安区西乡街道固戍一路塘西综合楼洪辉科创空间A314", "addressLocality": "深圳市", "addressRegion": "广东省", "postalCode": "518100", "addressCountry": "CN"}, "geo": {"@type": "GeoCoordinates", "latitude": 22.599684, "longitude": 113.85247}, "contactPoint": {"@type": "ContactPoint", "telephone": "18948732299", "contactType": "sales", "areaServed": "CN", "availableLanguage": ["zh-CN", "en"]}, "sameAs": ["https://qianshi.cool/blog.html", "https://qianshi.cool/cases.html", "https://qianshi.cool/news.html"], "hasBreadcrumb": {"@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "首页", "item": "https://qianshi.cool/"}, {"@type": "ListItem", "position": 2, "name": "AI拓客", "item": "https://qianshi.cool/ai-acquisition.html"}]}}
 </script>
 </head>
 <body>
 
 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
     <ul class="nav-links" id="navLinks">
       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
       <li class="has-sub">
@@ -308,6 +316,8 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
         <div style="font-size:1.3rem;font-weight:700;color:#fff">18948732299</div>
         <div style="margin-top:4px;color:#a8b3d4">105920869@qq.com</div>
diff --git a/ai-customer-service.html b/ai-customer-service.html
index f2f307d..10828dc 100644
--- a/ai-customer-service.html
+++ b/ai-customer-service.html
@@ -4,6 +4,10 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="512x512" href="/assets/icon-512.png">
 <style>
 *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
 :root{
@@ -20,7 +24,9 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
 /* ===== 导航 ===== */
 .nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:70px;box-shadow:0 1px 6px rgba(0,0,0,.04)}
 .nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
-.nav-logo{font-size:1.3rem;font-weight:800;color:var(--primary);text-decoration:none;letter-spacing:.5px}
+.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
+.nav-logo img{width:auto;height:28px;display:block;flex:0 0 auto}
+.nav-logo span{font-size:1.1rem;font-weight:800;color:var(--primary);letter-spacing:.5px;line-height:1}
 .nav-links{display:flex;list-style:none;align-items:center;height:100%}
 .nav-links>li{position:relative;height:100%}
 .nav-links>li>a{display:flex;align-items:center;height:100%;padding:0 14px;color:var(--text);text-decoration:none;font-size:.9rem;transition:color .2s;white-space:nowrap}
@@ -148,23 +154,25 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
 <meta property="og:title" content="AI客服 — 7×24小时智能客服秒级响应 — 千视科技">
 <meta property="og:description" content="AI智能客服：7×24小时在线，秒级响应，多轮对话与人工无缝转接，接入网站/微信/小程序/企微等渠道。支持按业务流程定制开发与知识库训练。">
 <meta property="og:url" content="https://qianshi.cool/ai-customer-service.html">
-<meta property="og:image" content="https://qianshi.cool/assets/wechat-service.png">
-<meta property="og:image:width" content="594">
-<meta property="og:image:height" content="594">
+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
+<meta property="og:image:width" content="1200">
+<meta property="og:image:height" content="630">
 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="AI客服 — 7×24小时智能客服秒级响应 — 千视科技">
 <meta name="twitter:description" content="AI智能客服：7×24小时在线，秒级响应，多轮对话与人工无缝转接，接入网站/微信/小程序/企微等渠道。支持按业务流程定制开发与知识库训练。">
-<meta name="twitter:image" content="https://qianshi.cool/assets/wechat-service.png">
+<meta name="twitter:image" content="https://qianshi.cool/assets/og-image.png">
 <script type="application/ld+json">
-{"@context": "https://schema.org", "@type": "Organization", "name": "千视科技", "alternateName": "Qianshi Tech", "url": "https://qianshi.cool", "logo": "https://qianshi.cool/assets/wechat-service.png", "description": "千视科技：企业智能体、AI拓客、AI推广、软件定制开发，一站式AI数字化增长服务商。", "foundingDate": "2019", "address": {"@type": "PostalAddress", "streetAddress": "宝安区西乡街道固戍一路塘西综合楼洪辉科创空间A314", "addressLocality": "深圳市", "addressRegion": "广东省", "postalCode": "518100", "addressCountry": "CN"}, "geo": {"@type": "GeoCoordinates", "latitude": 22.599684, "longitude": 113.85247}, "contactPoint": {"@type": "ContactPoint", "telephone": "18948732299", "contactType": "sales", "areaServed": "CN", "availableLanguage": ["zh-CN", "en"]}, "sameAs": ["https://qianshi.cool/blog.html", "https://qianshi.cool/cases.html", "https://qianshi.cool/news.html"], "hasBreadcrumb": {"@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "首页", "item": "https://qianshi.cool/"}, {"@type": "ListItem", "position": 2, "name": "企业智能体", "item": "https://qianshi.cool/enterprise-agent.html"}, {"@type": "ListItem", "position": 3, "name": "AI客服", "item": "https://qianshi.cool/ai-customer-service.html"}]}}
+{"@context": "https://schema.org", "@type": "Organization", "name": "千视科技", "alternateName": "Qianshi Tech", "url": "https://qianshi.cool", "logo": "https://qianshi.cool/assets/logo.png", "description": "千视科技：企业智能体、AI拓客、AI推广、软件定制开发，一站式AI数字化增长服务商。", "foundingDate": "2019", "address": {"@type": "PostalAddress", "streetAddress": "宝安区西乡街道固戍一路塘西综合楼洪辉科创空间A314", "addressLocality": "深圳市", "addressRegion": "广东省", "postalCode": "518100", "addressCountry": "CN"}, "geo": {"@type": "GeoCoordinates", "latitude": 22.599684, "longitude": 113.85247}, "contactPoint": {"@type": "ContactPoint", "telephone": "18948732299", "contactType": "sales", "areaServed": "CN", "availableLanguage": ["zh-CN", "en"]}, "sameAs": ["https://qianshi.cool/blog.html", "https://qianshi.cool/cases.html", "https://qianshi.cool/news.html"], "hasBreadcrumb": {"@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "首页", "item": "https://qianshi.cool/"}, {"@type": "ListItem", "position": 2, "name": "企业智能体", "item": "https://qianshi.cool/enterprise-agent.html"}, {"@type": "ListItem", "position": 3, "name": "AI客服", "item": "https://qianshi.cool/ai-customer-service.html"}]}}
 </script>
 </head>
 <body>
 
 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
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-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
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         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
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       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/case-detail.html b/case-detail.html
index 7880571..c1bbeef 100644
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+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
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+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
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 <meta name="twitter:title" content="客户案例详情 — 可复现的AI落地案例 — 千视科技">
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 <body>
 
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-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
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       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
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         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/cases.html b/cases.html
index 8671e02..eb45e2a 100644
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+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
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 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="客户案例 — 真实落地案例可复现带交付物 — 千视科技">
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 </head>
 <body>
 
 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
     <ul class="nav-links" id="navLinks">
       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
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         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/company.html b/company.html
index 1bfc349..e51178b 100644
--- a/company.html
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 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
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+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
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+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
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+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
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       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/cookie.html b/cookie.html
index e02e741..f355b9e 100644
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 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
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 <meta name="twitter:title" content="Cookie政策 — 千视科技">
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 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
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       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
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         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
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       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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index 1ec6072..9255c86 100644
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 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="512x512" href="/assets/icon-512.png">
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+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
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+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
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+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
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+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
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+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
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         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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-.nav-logo{font-size:1.3rem;font-weight:800;color:var(--primary);text-decoration:none;letter-spacing:.5px}
+.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
+.nav-logo img{width:auto;height:28px;display:block;flex:0 0 auto}
+.nav-logo span{font-size:1.1rem;font-weight:800;color:var(--primary);letter-spacing:.5px;line-height:1}
 .nav-links{display:flex;list-style:none;align-items:center;height:100%}
 .nav-links>li{position:relative;height:100%}
 .nav-links>li>a{display:flex;align-items:center;height:100%;padding:0 14px;color:var(--text);text-decoration:none;font-size:.9rem;transition:color .2s;white-space:nowrap}
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 <meta property="og:description" content="千视科技：企业智能体、AI拓客、AI推广与软件定制开发一站式服务商。RAG知识库、AI客服、数字人、AI获客营销，已服务500+企业客户。">
 <meta property="og:url" content="https://qianshi.cool/index.html">
-<meta property="og:image" content="https://qianshi.cool/assets/wechat-service.png">
-<meta property="og:image:width" content="594">
-<meta property="og:image:height" content="594">
+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
+<meta property="og:image:width" content="1200">
+<meta property="og:image:height" content="630">
 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="千视科技 — 企业智能体 · AI拓客 · AI推广 · 软件定制开发">
 <meta name="twitter:description" content="千视科技：企业智能体、AI拓客、AI推广与软件定制开发一站式服务商。RAG知识库、AI客服、数字人、AI获客营销，已服务500+企业客户。">
-<meta name="twitter:image" content="https://qianshi.cool/assets/wechat-service.png">
+<meta name="twitter:image" content="https://qianshi.cool/assets/og-image.png">
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 </script>
 </head>
 <body>
 
 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
     <ul class="nav-links" id="navLinks">
       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
       <li class="has-sub">
@@ -782,6 +790,8 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
         <div style="font-size:1.3rem;font-weight:700;color:#fff">18948732299</div>
         <div style="margin-top:4px;color:#a8b3d4">105920869@qq.com</div>
diff --git a/join.html b/join.html
index f86be7a..149ccdc 100644
--- a/join.html
+++ b/join.html
@@ -4,6 +4,10 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="512x512" href="/assets/icon-512.png">
 <style>
 *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
 :root{
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 /* ===== 导航 ===== */
 .nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:70px;box-shadow:0 1px 6px rgba(0,0,0,.04)}
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-.nav-logo{font-size:1.3rem;font-weight:800;color:var(--primary);text-decoration:none;letter-spacing:.5px}
+.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
+.nav-logo img{width:auto;height:28px;display:block;flex:0 0 auto}
+.nav-logo span{font-size:1.1rem;font-weight:800;color:var(--primary);letter-spacing:.5px;line-height:1}
 .nav-links{display:flex;list-style:none;align-items:center;height:100%}
 .nav-links>li{position:relative;height:100%}
 .nav-links>li>a{display:flex;align-items:center;height:100%;padding:0 14px;color:var(--text);text-decoration:none;font-size:.9rem;transition:color .2s;white-space:nowrap}
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 <meta property="og:url" content="https://qianshi.cool/join.html">
-<meta property="og:image" content="https://qianshi.cool/assets/wechat-service.png">
-<meta property="og:image:width" content="594">
-<meta property="og:image:height" content="594">
+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
+<meta property="og:image:width" content="1200">
+<meta property="og:image:height" content="630">
 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="加入我们 — 与AI团队一起工作 — 千视科技">
 <meta name="twitter:description" content="千视科技招聘：算法、工程、产品与运营岗位虚位以待，与AI智能体团队一起做真正落地的AI产品。">
-<meta name="twitter:image" content="https://qianshi.cool/assets/wechat-service.png">
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 </script>
 </head>
 <body>
 
 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
     <ul class="nav-links" id="navLinks">
       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
       <li class="has-sub">
@@ -321,6 +329,8 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
         <div style="font-size:1.3rem;font-weight:700;color:#fff">18948732299</div>
         <div style="margin-top:4px;color:#a8b3d4">105920869@qq.com</div>
diff --git a/legal.html b/legal.html
index f66feea..840c21b 100644
--- a/legal.html
+++ b/legal.html
@@ -4,6 +4,10 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="512x512" href="/assets/icon-512.png">
 <style>
 *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
 :root{
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 /* ===== 导航 ===== */
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-.nav-logo{font-size:1.3rem;font-weight:800;color:var(--primary);text-decoration:none;letter-spacing:.5px}
+.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
+.nav-logo img{width:auto;height:28px;display:block;flex:0 0 auto}
+.nav-logo span{font-size:1.1rem;font-weight:800;color:var(--primary);letter-spacing:.5px;line-height:1}
 .nav-links{display:flex;list-style:none;align-items:center;height:100%}
 .nav-links>li{position:relative;height:100%}
 .nav-links>li>a{display:flex;align-items:center;height:100%;padding:0 14px;color:var(--text);text-decoration:none;font-size:.9rem;transition:color .2s;white-space:nowrap}
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 <meta property="og:title" content="法律声明 — 千视科技">
 <meta property="og:description" content="千视科技法律声明：知识产权、网站使用与责任范围等法律条款说明。">
 <meta property="og:url" content="https://qianshi.cool/legal.html">
-<meta property="og:image" content="https://qianshi.cool/assets/wechat-service.png">
-<meta property="og:image:width" content="594">
-<meta property="og:image:height" content="594">
+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
+<meta property="og:image:width" content="1200">
+<meta property="og:image:height" content="630">
 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="法律声明 — 千视科技">
 <meta name="twitter:description" content="千视科技法律声明：知识产权、网站使用与责任范围等法律条款说明。">
-<meta name="twitter:image" content="https://qianshi.cool/assets/wechat-service.png">
+<meta name="twitter:image" content="https://qianshi.cool/assets/og-image.png">
 <script type="application/ld+json">
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+{"@context": "https://schema.org", "@type": "Organization", "name": "千视科技", "alternateName": "Qianshi Tech", "url": "https://qianshi.cool", "logo": "https://qianshi.cool/assets/logo.png", "description": "千视科技：企业智能体、AI拓客、AI推广、软件定制开发，一站式AI数字化增长服务商。", "foundingDate": "2019", "address": {"@type": "PostalAddress", "streetAddress": "宝安区西乡街道固戍一路塘西综合楼洪辉科创空间A314", "addressLocality": "深圳市", "addressRegion": "广东省", "postalCode": "518100", "addressCountry": "CN"}, "geo": {"@type": "GeoCoordinates", "latitude": 22.599684, "longitude": 113.85247}, "contactPoint": {"@type": "ContactPoint", "telephone": "18948732299", "contactType": "sales", "areaServed": "CN", "availableLanguage": ["zh-CN", "en"]}, "sameAs": ["https://qianshi.cool/blog.html", "https://qianshi.cool/cases.html", "https://qianshi.cool/news.html"], "hasBreadcrumb": {"@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "首页", "item": "https://qianshi.cool/"}, {"@type": "ListItem", "position": 2, "name": "法律声明", "item": "https://qianshi.cool/legal.html"}]}}
 </script>
 </head>
 <body>
 
 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
     <ul class="nav-links" id="navLinks">
       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
       <li class="has-sub">
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         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
         <div style="font-size:1.3rem;font-weight:700;color:#fff">18948732299</div>
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diff --git a/marketing-resources.html b/marketing-resources.html
index b13d932..7f71b77 100644
--- a/marketing-resources.html
+++ b/marketing-resources.html
@@ -4,6 +4,10 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="512x512" href="/assets/icon-512.png">
 <style>
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 :root{
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 .nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
-.nav-logo{font-size:1.3rem;font-weight:800;color:var(--primary);text-decoration:none;letter-spacing:.5px}
+.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
+.nav-logo img{width:auto;height:28px;display:block;flex:0 0 auto}
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   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
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       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/media-ops.html b/media-ops.html
index 655e7b9..359e17f 100644
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 <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="512x512" href="/assets/icon-512.png">
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+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
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 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="自媒体代运营 — AI赋能全平台内容运营 — 千视科技">
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 </head>
 <body>
 
 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
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       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
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         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/news-detail.html b/news-detail.html
index 95094ad..7a67f6d 100644
--- a/news-detail.html
+++ b/news-detail.html
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 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
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-<meta property="og:image:width" content="594">
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+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
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 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="新闻详情 — 千视科技">
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-<meta name="twitter:image" content="https://qianshi.cool/assets/wechat-service.png">
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 </head>
 <body>
 
 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
     <ul class="nav-links" id="navLinks">
       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
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         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
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       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/news.html b/news.html
index afc5fe8..f8b7f52 100644
--- a/news.html
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@@ -4,6 +4,10 @@
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+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="512x512" href="/assets/icon-512.png">
 <style>
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-.nav-logo{font-size:1.3rem;font-weight:800;color:var(--primary);text-decoration:none;letter-spacing:.5px}
+.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
+.nav-logo img{width:auto;height:28px;display:block;flex:0 0 auto}
+.nav-logo span{font-size:1.1rem;font-weight:800;color:var(--primary);letter-spacing:.5px;line-height:1}
 .nav-links{display:flex;list-style:none;align-items:center;height:100%}
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-<meta property="og:image:width" content="594">
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+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
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+<meta property="og:image:height" content="630">
 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="新闻中心 — 公司动态与行业洞察 — 千视科技">
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-<meta name="twitter:image" content="https://qianshi.cool/assets/wechat-service.png">
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 <body>
 
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   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
     <ul class="nav-links" id="navLinks">
       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
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         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/opc-solution.html b/opc-solution.html
index e6e651c..84b218b 100644
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 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
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-<meta property="og:image:width" content="594">
-<meta property="og:image:height" content="594">
+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
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 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="OPC一人公司 — AI数字员工替代传统团队 — 千视科技">
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 </head>
 <body>
 
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   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
     <ul class="nav-links" id="navLinks">
       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
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         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/privacy.html b/privacy.html
index 1776feb..029c077 100644
--- a/privacy.html
+++ b/privacy.html
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 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
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+.nav-logo span{font-size:1.1rem;font-weight:800;color:var(--primary);letter-spacing:.5px;line-height:1}
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 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="隐私政策 — 千视科技">
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 </head>
 <body>
 
 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
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       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
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         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/rag-kb.html b/rag-kb.html
index e3e6d79..c74bd55 100644
--- a/rag-kb.html
+++ b/rag-kb.html
@@ -4,6 +4,10 @@
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 <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="512x512" href="/assets/icon-512.png">
 <style>
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-.nav-logo{font-size:1.3rem;font-weight:800;color:var(--primary);text-decoration:none;letter-spacing:.5px}
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+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
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       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/sentiment-management.html b/sentiment-management.html
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+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
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 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="舆情管理 — 全网舆情监控与预警自动化 — 千视科技">
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   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
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         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/sitemap.html b/sitemap.html
index 8aeecd2..28510b7 100644
--- a/sitemap.html
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 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
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 <meta name="twitter:title" content="网站地图 — 千视科技">
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 <body>
 
 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
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         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
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+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
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+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
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+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
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+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
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diff --git a/software.html b/software.html
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+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
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+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
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+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
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       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
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@@ -323,6 +331,8 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
         <div style="font-size:1.3rem;font-weight:700;color:#fff">18948732299</div>
         <div style="margin-top:4px;color:#a8b3d4">105920869@qq.com</div>
diff --git a/terms.html b/terms.html
index 6a813df..ba65c15 100644
--- a/terms.html
+++ b/terms.html
@@ -35,16 +35,16 @@ p{margin:12px 0}
 <meta property="og:title" content="用户服务协议 — 千视科技">
 <meta property="og:description" content="千视科技用户服务协议：用户访问与使用本网站相关服务所适用的条款。">
 <meta property="og:url" content="https://qianshi.cool/terms.html">
-<meta property="og:image" content="https://qianshi.cool/assets/wechat-service.png">
-<meta property="og:image:width" content="594">
-<meta property="og:image:height" content="594">
+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
+<meta property="og:image:width" content="1200">
+<meta property="og:image:height" content="630">
 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="用户服务协议 — 千视科技">
 <meta name="twitter:description" content="千视科技用户服务协议：用户访问与使用本网站相关服务所适用的条款。">
-<meta name="twitter:image" content="https://qianshi.cool/assets/wechat-service.png">
+<meta name="twitter:image" content="https://qianshi.cool/assets/og-image.png">
 <script type="application/ld+json">
-{"@context": "https://schema.org", "@type": "Organization", "name": "千视科技", "alternateName": "Qianshi Tech", "url": "https://qianshi.cool", "logo": "https://qianshi.cool/assets/wechat-service.png", "description": "千视科技：企业智能体、AI拓客、AI推广、软件定制开发，一站式AI数字化增长服务商。", "foundingDate": "2019", "address": {"@type": "PostalAddress", "streetAddress": "宝安区西乡街道固戍一路塘西综合楼洪辉科创空间A314", "addressLocality": "深圳市", "addressRegion": "广东省", "postalCode": "518100", "addressCountry": "CN"}, "geo": {"@type": "GeoCoordinates", "latitude": 22.599684, "longitude": 113.85247}, "contactPoint": {"@type": "ContactPoint", "telephone": "18948732299", "contactType": "sales", "areaServed": "CN", "availableLanguage": ["zh-CN", "en"]}, "sameAs": ["https://qianshi.cool/blog.html", "https://qianshi.cool/cases.html", "https://qianshi.cool/news.html"], "hasBreadcrumb": {"@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "首页", "item": "https://qianshi.cool/"}, {"@type": "ListItem", "position": 2, "name": "用户服务协议", "item": "https://qianshi.cool/terms.html"}]}}
+{"@context": "https://schema.org", "@type": "Organization", "name": "千视科技", "alternateName": "Qianshi Tech", "url": "https://qianshi.cool", "logo": "https://qianshi.cool/assets/logo.png", "description": "千视科技：企业智能体、AI拓客、AI推广、软件定制开发，一站式AI数字化增长服务商。", "foundingDate": "2019", "address": {"@type": "PostalAddress", "streetAddress": "宝安区西乡街道固戍一路塘西综合楼洪辉科创空间A314", "addressLocality": "深圳市", "addressRegion": "广东省", "postalCode": "518100", "addressCountry": "CN"}, "geo": {"@type": "GeoCoordinates", "latitude": 22.599684, "longitude": 113.85247}, "contactPoint": {"@type": "ContactPoint", "telephone": "18948732299", "contactType": "sales", "areaServed": "CN", "availableLanguage": ["zh-CN", "en"]}, "sameAs": ["https://qianshi.cool/blog.html", "https://qianshi.cool/cases.html", "https://qianshi.cool/news.html"], "hasBreadcrumb": {"@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "首页", "item": "https://qianshi.cool/"}, {"@type": "ListItem", "position": 2, "name": "用户服务协议", "item": "https://qianshi.cool/terms.html"}]}}
 </script>
 </head>
 <body>
diff --git a/website-building.html b/website-building.html
index 572dfaf..d54c5c9 100644
--- a/website-building.html
+++ b/website-building.html
@@ -4,6 +4,10 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="/fontawesome/css/all.min.css">
+<link rel="icon" href="/assets/favicon-32x32.png" sizes="32x32">
+<link rel="icon" href="/assets/favicon-16x16.png" sizes="16x16">
+<link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="512x512" href="/assets/icon-512.png">
 <style>
 *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
 :root{
@@ -20,7 +24,9 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
 /* ===== 导航 ===== */
 .nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:70px;box-shadow:0 1px 6px rgba(0,0,0,.04)}
 .nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
-.nav-logo{font-size:1.3rem;font-weight:800;color:var(--primary);text-decoration:none;letter-spacing:.5px}
+.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
+.nav-logo img{width:auto;height:28px;display:block;flex:0 0 auto}
+.nav-logo span{font-size:1.1rem;font-weight:800;color:var(--primary);letter-spacing:.5px;line-height:1}
 .nav-links{display:flex;list-style:none;align-items:center;height:100%}
 .nav-links>li{position:relative;height:100%}
 .nav-links>li>a{display:flex;align-items:center;height:100%;padding:0 14px;color:var(--text);text-decoration:none;font-size:.9rem;transition:color .2s;white-space:nowrap}
@@ -148,23 +154,25 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
 <meta property="og:title" content="AI建站 — 快速上线高质量企业网站 — 千视科技">
 <meta property="og:description" content="AI建站服务：企业官网、品牌站、营销站、商城站快速搭建，AI生成内容与页面，内置SEO优化与多语言，交付周期短、可扩展可定制开发。">
 <meta property="og:url" content="https://qianshi.cool/website-building.html">
-<meta property="og:image" content="https://qianshi.cool/assets/wechat-service.png">
-<meta property="og:image:width" content="594">
-<meta property="og:image:height" content="594">
+<meta property="og:image" content="https://qianshi.cool/assets/og-image.png">
+<meta property="og:image:width" content="1200">
+<meta property="og:image:height" content="630">
 <meta property="og:locale" content="zh_CN">
 <meta name="twitter:card" content="summary_large_image">
 <meta name="twitter:title" content="AI建站 — 快速上线高质量企业网站 — 千视科技">
 <meta name="twitter:description" content="AI建站服务：企业官网、品牌站、营销站、商城站快速搭建，AI生成内容与页面，内置SEO优化与多语言，交付周期短、可扩展可定制开发。">
-<meta name="twitter:image" content="https://qianshi.cool/assets/wechat-service.png">
+<meta name="twitter:image" content="https://qianshi.cool/assets/og-image.png">
 <script type="application/ld+json">
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+{"@context": "https://schema.org", "@type": "Organization", "name": "千视科技", "alternateName": "Qianshi Tech", "url": "https://qianshi.cool", "logo": "https://qianshi.cool/assets/logo.png", "description": "千视科技：企业智能体、AI拓客、AI推广、软件定制开发，一站式AI数字化增长服务商。", "foundingDate": "2019", "address": {"@type": "PostalAddress", "streetAddress": "宝安区西乡街道固戍一路塘西综合楼洪辉科创空间A314", "addressLocality": "深圳市", "addressRegion": "广东省", "postalCode": "518100", "addressCountry": "CN"}, "geo": {"@type": "GeoCoordinates", "latitude": 22.599684, "longitude": 113.85247}, "contactPoint": {"@type": "ContactPoint", "telephone": "18948732299", "contactType": "sales", "areaServed": "CN", "availableLanguage": ["zh-CN", "en"]}, "sameAs": ["https://qianshi.cool/blog.html", "https://qianshi.cool/cases.html", "https://qianshi.cool/news.html"], "hasBreadcrumb": {"@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "首页", "item": "https://qianshi.cool/"}, {"@type": "ListItem", "position": 2, "name": "AI推广", "item": "https://qianshi.cool/ai-promotion.html"}, {"@type": "ListItem", "position": 3, "name": "建站", "item": "https://qianshi.cool/website-building.html"}]}}
 </script>
 </head>
 <body>
 
 <nav class="nav">
   <div class="container nav-inner">
-    <a href="/" class="nav-logo" data-zh="千视科技" data-en="Qianshi Tech">千视科技</a>
+    <a href="/" class="nav-logo" aria-label="千视科技">
+      <img src="/assets/nav-icon.png" alt="千视科技" width="35" height="28">
+      <span data-zh="千视科技" data-en="Qianshi Tech">千视科技</span></a>
     <ul class="nav-links" id="navLinks">
       <li><a href="/" data-zh="首页" data-en="Home">首页</a></li>
       <li class="has-sub">
@@ -323,6 +331,8 @@ body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans G
         <a href="/contact.html" data-zh="联系我们" data-en="Contact">联系我们</a>
       </div>
       <div class="footer-col">
+        <div style="background:#fff;border-radius:10px;padding:11px 14px;width:fit-content;margin-bottom:18px">
+        <img src="/assets/logo-dark.png" alt="千视科技" width="120" height="33" style="display:block;width:120px;height:auto"></div>
         <h5 data-zh="联系方式" data-en="Contact">联系方式</h5>
         <div style="font-size:1.3rem;font-weight:700;color:#fff">18948732299</div>
         <div style="margin-top:4px;color:#a8b3d4">105920869@qq.com</div>