feat(website): 在首页 contact section 添加2.0商业版购买入口

含淘宝链接、口令MF278、微信下单，中英文双语。

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

website/index.html

@@ -686,6 +686,25 @@
         <span class="zh">问题反馈、合作交流、技术咨询</span>
         <span class="en hidden">Feedback, collaboration, technical support</span>
     </p>
+    <div style="max-width:560px;margin:0 auto 32px;padding:20px 24px;border:1px solid #f5a623;border-radius:12px;background:rgba(245,166,35,0.07);text-align:center;">
+        <p style="font-size:17px;font-weight:700;margin-bottom:8px;">
+            <span class="zh">🚀 购买 2.0 商业版虾盘</span>
+            <span class="en hidden">🚀 Buy U-Claw 2.0 (Commercial)</span>
+        </p>
+        <p style="font-size:14px;color:var(--text-dim);margin-bottom:14px;">
+            <span class="zh">本地模型离线运行 · 无需 API · 附赠 AI 陪跑服务</span>
+            <span class="en hidden">On-device local model · Offline · AI onboarding included</span>
+        </p>
+        <a href="https://e.tb.cn/h.i9g99R8orxuFZI8?tk=dFKx5X8NQBY" target="_blank"
+           style="display:inline-block;padding:10px 28px;background:#f5a623;color:#000;font-weight:700;border-radius:8px;text-decoration:none;font-size:15px;">
+            <span class="zh">👉 淘宝购买</span>
+            <span class="en hidden">👉 Buy on Taobao</span>
+        </a>
+        <p style="margin-top:10px;font-size:13px;color:var(--text-dim);">
+            <span class="zh">或淘宝搜索口令 <code>MF278</code> · 微信下单：<strong>hecare888</strong></span>
+            <span class="en hidden">Or search <code>MF278</code> on Taobao · WeChat: <strong>hecare888</strong></span>
+        </p>
+    </div>
     <div style="display: flex; flex-wrap: wrap; gap: 40px; justify-content: center; align-items: center;">
         <div style="text-align: center;">
             <img src="wechat-qr.jpg" alt="WeChat QR" style="width: 200px; height: 200px; border-radius: 12px; border: 1px solid var(--border);">