diff --git a/.gitignore b/.gitignore
index 9c820ce..5ee7862 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,10 @@ page-builder.py
 
 # 本地工具脚本
 optimize-images.py
+
+# 大二进制文件
+*.pptx
+*.zip
+*.pdf
+*.bak
+*.bak.*
diff --git a/Bohai_Business_Roles.pptx b/Bohai_Business_Roles.pptx
deleted file mode 100644
index 2272923..0000000
Binary files a/Bohai_Business_Roles.pptx and /dev/null differ
diff --git a/index.html.bak.20260705-before-p1-finish b/index.html.bak.20260705-before-p1-finish
deleted file mode 100644
index 5788c8f..0000000
--- a/index.html.bak.20260705-before-p1-finish
+++ /dev/null
@@ -1,1096 +0,0 @@
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-<script type="application/ld+json">
-{
-  "@context": "https://schema.org",
-  "@type": "LocalBusiness",
-  "name": "陕西博海网络科技有限公司",
-  "url": "https://sxbh.ltd",
-  "telephone": "+86-912-4223980",
-  "email": "service@sxbh.ltd",
-  "description": "电脑维修、打印机维修、网络工程、电子产品销售、Web开发、IT运维一站式IT解决方案",
-  "address": {
-    "@type": "PostalAddress",
-    "addressLocality": "定边县",
-    "addressRegion": "榆林市",
-    "addressCountry": "CN",
-    "streetAddress": "二道西街"
-  },
-  "areaServed": ["定边县", "榆林市"],
-  "openingHours": "Mo-Sa 08:30-18:00",
-  "priceRange": "¥¥"
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-</head>
-<body>
-
-<!-- HEADER -->
-<header>
-  <div class="header-inner">
-    <a href="#" class="logo">
-      <div class="logo-icon">博</div>
-      博海网络科技 <span>· BHWL</span>
-    </a>
-    <nav id="nav">
-      <a href="#services">服务项目</a>
-      <a href="#products">产品销售</a>
-      <a href="#perspective">博海视角</a>
-      <a href="#why">为什么选择我们</a>
-      <a href="#contact">联系我们</a>
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-<!-- HERO -->
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-  <div class="hero-inner">
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-      </svg>
-      定边本地专业IT服务商 · 25年+行业经验
-    </div>
-    <h1 class="fade-in visible fade-in-d1">您的<em>专业IT服务</em>管家</h1>
-    <p class="fade-in visible fade-in-d2">深耕IT服务与数字化领域，集设备维修、产品销售、网络工程、Web应用开发于一体，为企业和个人提供一站式IT解决方案。</p>
-    <div class="hero-actions fade-in visible fade-in-d3">
-      <a href="tel:09124223980" class="btn btn-primary">
-        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
-          <path d="M22 16.92v3a2 2 0 0 1-2.18 2A19.79 19.79 0 0 1 7.32 6.18 2 2 0 0 1 9.5 4.5h3a2 2 0 0 1 2 1.72 12.84 12.84 0 0 0 .7 2.81 2 2 0 0 1-.45 2.11L13.5 13.5a12.06 12.06 0 0 0 5.67 5.67l1.78-1.78a2 2 0 0 1 2.11-.45 12.84 12.84 0 0 0 2.81.7A2 2 0 0 1 22 16.92z"></path>
-        </svg>
-        立即咨询：0912-4223980
-      </a>
-      <a href="#services" class="btn btn-outline">
-        查看服务项目
-        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
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-  </div>
-</section>
-
-<!-- SERVICES -->
-<section id="services">
-  <div class="section-inner">
-    <div class="section-label fade-in">
-      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
-        <rect x="2" y="3" width="20" height="14" rx="2" ry="2"></rect>
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-        <line x1="12" y1="17" x2="12" y2="21"></line>
-      </svg>
-      OUR SERVICES
-    </div>
-    <h2 class="section-title fade-in">我们的服务</h2>
-    <p class="section-desc fade-in">覆盖您全方位IT需求的专业服务，30分钟响应，2小时上门</p>
-    <div class="services-grid">
-
-      <!-- 电脑维修 -->
-      <div class="service-card fade-in fade-in-d1">
-        <div class="service-icon" style="background:#ede9fe;color:#7c3aed;">
-          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
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-            <line x1="12" y1="17" x2="12" y2="21"></line>
-          </svg>
-        </div>
-        <h3>电脑维修</h3>
-        <p>台式机/笔记本故障诊断、硬件更换升级、系统安装优化、数据备份恢复、清灰保养</p>
-        <div class="service-tags">
-          <span>硬件维修</span><span>系统安装</span><span>数据恢复</span><span>清灰保养</span>
-        </div>
-      </div>
-
-      <!-- 打印机维修 -->
-      <div class="service-card fade-in fade-in-d1">
-        <div class="service-icon" style="background:#e0f2fe;color:#0284c7;">
-          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
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-            <rect x="6" y="14" width="12" height="8"></rect>
-          </svg>
-        </div>
-        <h3>打印机维修</h3>
-        <p>激光/喷墨打印机维修、驱动安装调试、加粉换墨、不进纸修复、网络打印配置</p>
-        <div class="service-tags">
-          <span>打印机维修</span><span>加粉换墨</span><span>驱动安装</span><span>网络打印</span>
-        </div>
-      </div>
-
-      <!-- 网络工程监控 -->
-      <div class="service-card fade-in fade-in-d2">
-        <div class="service-icon" style="background:#dcfce7;color:#16a34a;">
-          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
-            <circle cx="12" cy="12" r="10"></circle>
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-            <path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"></path>
-          </svg>
-        </div>
-        <h3>网络工程监控</h3>
-        <p>综合布线、无线覆盖、企业组网、监控安防、弱电工程、机房建设</p>
-        <div class="service-tags">
-          <span>综合布线</span><span>无线覆盖</span><span>监控安防</span><span>弱电工程</span>
-        </div>
-      </div>
-
-      <!-- 行业应用开发 -->
-      <a href="https://learn.sxbh.ltd" target="_blank" class="service-card-link">
-      <div class="service-card fade-in fade-in-d2">
-        <div class="service-icon" style="background:#fff7ed;color:#ea580c;">
-          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
-            <rect x="5" y="2" width="14" height="20" rx="2"></rect>
-            <line x1="12" y1="18" x2="12" y2="18"></line>
-          </svg>
-        </div>
-        <h3>行业应用开发</h3>
-        <p>企业官网、管理后台、小程序、移动应用、行业管理系统定制、网站运维升级</p>
-        <div class="service-tags">
-          <span style="display:inline-flex;align-items:center;gap:4px;padding:5px 12px;border-radius:6px;background:#0f1f4a;color:#fff;font-size:13px;font-weight:500;">
-            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round" style="width:14px;height:14px;">
-              <circle cx="12" cy="12" r="10"></circle>
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-            </svg>
-            全栈学习网
-          </span>
-          <span style="display:inline-flex;align-items:center;gap:4px;padding:5px 12px;border-radius:6px;background:#f1f5f9;color:#94a3b8;font-size:13px;font-weight:500;">
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-            </svg>
-            管理会计OS
-          </span>
-        </div>
-      </div>
-      </a>
-
-      <!-- IT运维服务 -->
-      <div class="service-card fade-in fade-in-d3">
-        <div class="service-icon" style="background:#fce7f3;color:#db2777;">
-          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
-            <circle cx="12" cy="12" r="3"></circle>
-            <path d="M19.4 15a1.65 1.65 0 0 0 .33 1.82l.06.06a2 2 0 0 1-2.83 2.83l-.06-.06a1.65 1.65 0 0 0-1.82-.33 1.65 1.65 0 0 0-1 1.51V21a2 2 0 0 1-4 0v-.09A1.65 1.65 0 0 0 9 19.4a1.65 1.65 0 0 0-1.82.33l-.06.06a2 2 0 0 1-2.83-2.83l.06-.06A1.65 1.65 0 0 0 4.68 15a1.65 1.65 0 0 0-1.51-1H3a2 2 0 0 1 0-4h.09A1.65 1.65 0 0 0 4.6 9a1.65 1.65 0 0 0-.33-1.82l-.06-.06a2 2 0 0 1 2.83-2.83l.06.06A1.65 1.65 0 0 0 9 4.68a1.65 1.65 0 0 0 1-1.51V3a2 2 0 0 1 4 0v.09a1.65 1.65 0 0 0 1 1.51 1.65 1.65 0 0 0 1.82-.33l.06-.06a2 2 0 0 1 2.83 2.83l-.06.06A1.65 1.65 0 0 0 19.4 9a1.65 1.65 0 0 0 1.51 1H21a2 2 0 0 1 0 4h-.09a1.65 1.65 0 0 0-1.51 1z"></path>
-          </svg>
-        </div>
-        <h3>IT运维服务</h3>
-        <p>驻场IT技术支持、服务器运维、网站建设维护、办公设备年度维保、IT规划咨询</p>
-        <div class="service-tags">
-          <span>驻场运维</span><span>服务器维护</span><span>IT规划</span>
-        </div>
-      </div>
-
-    </div>
-  </div>
-</section>
-
-<!-- PRODUCTS -->
-<section id="products" style="background:var(--gray-100);">
-  <div class="section-inner">
-    <div class="section-label fade-in">
-      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
-        <path d="M6 2L3 6v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2V6l-3-4z"></path>
-        <line x1="3" y1="6" x2="21" y2="6"></line>
-        <path d="M16 10a4 4 0 0 1-8 0"></path>
-      </svg>
-      PRODUCTS
-    </div>
-    <h2 class="section-title fade-in">产品销售</h2>
-    <p class="section-desc fade-in">正品行货，品质保障，电话下单2小时送达，免费安装</p>
-    <div class="products-grid">
-
-      <!-- 联想电脑 -->
-      <div class="product-card fade-in fade-in-d1">
-        <div class="product-img" style="background:linear-gradient(135deg,#eef2ff,#e0e7ff);">
-          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round" style="color:#6366f1;">
-            <rect x="2" y="3" width="20" height="14" rx="2" ry="2"></rect>
-            <line x1="8" y1="21" x2="16" y2="21"></line>
-            <line x1="12" y1="17" x2="12" y2="21"></line>
-          </svg>
-        </div>
-        <div class="product-body">
-          <h3>联想电脑</h3>
-          <p>联想 ThinkPad / 小新 / 拯救者系列笔记本、扬天 / ThinkCentre 台式机、工作站</p>
-          <div class="product-tags">
-            <span>笔记本</span><span>台式机</span><span>工作站</span><span>ThinkPad</span><span>小新</span><span>拯救者</span>
-          </div>
-          <a href="/products/lenovo.html" class="product-btn">
-            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
-              <line x1="5" y1="12" x2="19" y2="12"></line>
-              <polyline points="12 5 19 12 12 19"></polyline>
-            </svg>
-            查看详情
-          </a>
-        </div>
-      </div>
-
-      <!-- 办公设备 -->
-      <div class="product-card fade-in fade-in-d1">
-        <div class="product-img" style="background:linear-gradient(135deg,#f0fdf4,#dcfce7);">
-          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round" style="color:#16a34a;">
-            <polyline points="6 9 6 2 18 2 18 9"></polyline>
-            <path d="M6 18H4a2 2 0 0 1-2-2v-5a2 2 0 0 1 2-2h16a2 2 0 0 1 2 2v5a2 2 0 0 1-2 2h-2"></path>
-            <rect x="6" y="14" width="12" height="8"></rect>
-          </svg>
-        </div>
-        <div class="product-body">
-          <h3>办公设备</h3>
-          <p>打印机、复印机、扫描仪、多功能一体机、投影仪、碎纸机、会议设备</p>
-          <div class="product-tags">
-            <span>打印机</span><span>复印机</span><span>扫描仪</span><span>投影仪</span><span>一体机</span><span>会议设备</span>
-          </div>
-          <a href="/products/office.html" class="product-btn">
-            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
-              <line x1="5" y1="12" x2="19" y2="12"></line>
-              <polyline points="12 5 19 12 12 19"></polyline>
-            </svg>
-            查看详情
-          </a>
-        </div>
-      </div>
-
-      <!-- 配件耗材 -->
-      <div class="product-card fade-in fade-in-d2">
-        <div class="product-img" style="background:linear-gradient(135deg,#fefce8,#fef9c3);">
-          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round" style="color:#ca8a04;">
-            <circle cx="12" cy="12" r="3"></circle>
-            <path d="M19.4 15a1.65 1.65 0 0 0 .33 1.82l.06.06a2 2 0 0 1-2.83 2.83l-.06-.06a1.65 1.65 0 0 0-1.82-.33 1.65 1.65 0 0 0-1 1.51V21a2 2 0 0 1-4 0v-.09A1.65 1.65 0 0 0 9 19.4a1.65 1.65 0 0 0-1.82.33l-.06.06a2 2 0 0 1-2.83-2.83l.06-.06A1.65 1.65 0 0 0 4.68 15a1.65 1.65 0 0 0-1.51-1H3a2 2 0 0 1 0-4h.09A1.65 1.65 0 0 0 4.6 9a1.65 1.65 0 0 0-.33-1.82l-.06-.06a2 2 0 0 1 2.83-2.83l.06.06A1.65 1.65 0 0 0 9 4.68a1.65 1.65 0 0 0 1-1.51V3a2 2 0 0 1 4 0v.09a1.65 1.65 0 0 0 1 1.51 1.65 1.65 0 0 0 1.82-.33l.06-.06a2 2 0 0 1 2.83 2.83l-.06.06A1.65 1.65 0 0 0 19.4 9a1.65 1.65 0 0 0 1.51 1H21a2 2 0 0 1 0 4h-.09a1.65 1.65 0 0 0-1.51 1z"></path>
-          </svg>
-        </div>
-        <div class="product-body">
-          <h3>配件耗材</h3>
-          <p>原装/品牌硒鼓、墨盒、碳粉、色带、打印纸、网线、水晶头、电源、键鼠、内存、硬盘</p>
-          <div class="product-tags">
-            <span>硒鼓墨盒</span><span>碳粉</span><span>打印纸</span><span>网线</span><span>键鼠</span><span>内存硬盘</span>
-          </div>
-          <a href="/products/consumables.html" class="product-btn">
-            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
-              <line x1="5" y1="12" x2="19" y2="12"></line>
-              <polyline points="12 5 19 12 12 19"></polyline>
-            </svg>
-            查看详情
-          </a>
-        </div>
-      </div>
-
-    </div>
-  </div>
-</section>
-
-<!-- WHY US -->
-<section id="why" class="why-section">
-  <div class="section-inner">
-    <div class="section-label fade-in">
-      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
-        <path d="M12 20h9"></path>
-        <path d="M16.5 3.5a2.121 2.121 0 0 1 3 3L7 19l-4 1 1-4L16.5 3.5z"></path>
-      </svg>
-      WHY CHOOSE US
-    </div>
-    <h2 class="section-title fade-in">为什么选择我们</h2>
-    <p class="section-desc fade-in">专业值得信赖，服务创造价值</p>
-    <div class="why-grid">
-      <div class="why-card fade-in fade-in-d1">
-        <div class="why-icon" style="background:#fef3c7;color:#d97706;">
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-        </div>
-        <h3>快速响应</h3>
-        <p>30分钟内响应您的需求<br>2小时内上门服务<br>紧急情况随叫随到</p>
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-        <p>资深认证工程师团队<br>十年以上行业经验<br>持续技术培训更新</p>
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-        <p>一站式IT服务解决方案<br>电脑·打印机·网络·服务器<br>省心省力·降本增效</p>
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