fix(web): 官网 todo 清单全量修复（联系方式/死链/按钮/导航/下载）

- 联系方式：site.json email 改为真实地址，移除假电话，页脚条件渲染
- 死链：功能页 /download.html → /download/，页脚 href="#" 全部落地或移除
- 按钮指向：价格「购买」→ /register/，「联系销售/演示」→ mailto
- 导航：新增库存管理、审核流直链；模块卡加「了解更多」入口
- iOS 矛盾：首页平台卡标注「TestFlight 内测中」与下载页对齐
- 下载：API 域名抽到 site.json；接口失败时按钮降级为禁用态
- FAQ：试用版/单店版口径统一，明确「注册即试用 30 天」
- 文档：⌘K/Ctrl+K 绑定聚焦搜索框；反馈按钮改为本地 UI，不调不存在的接口
- dist：清理旧 docs.html 残留

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

web/index.njk

@@ -198,7 +198,7 @@ details[open] .faq-q .icon { transform: rotate(45deg); }
       <p class="lead">岩美酒库管理系统，为酒行与酒店设计的库存、审核、财务一体化平台。审核驱动业务流，库存与账款自动同步，五端无缝接入。</p>
       <div class="d-flex gap-12 mb-28">
         <a href="/register/" class="btn btn-primary btn-lg">免费试用 30 天<i data-lucide="arrow-right" class="icon"></i></a>
-        <a href="/app/" class="btn btn-secondary btn-lg"><i data-lucide="play-circle" class="icon"></i>观看演示</a>
+        <a href="/docs/" class="btn btn-secondary btn-lg"><i data-lucide="book-open" class="icon"></i>查看使用手册</a>
       </div>
       <div class="d-flex items-center gap-18 text-muted fs-sm">
         <div class="hero-mini-item d-flex items-center gap-6"><i data-lucide="check" class="icon"></i>无需安装</div>
@@ -312,6 +312,7 @@ details[open] .faq-q .icon { transform: rotate(45deg); }
           <li><i data-lucide="check" class="icon"></i>支持单据打印、商品标签打印</li>
           <li><i data-lucide="check" class="icon"></i>批次号追踪，生产日期可追溯</li>
         </ul>
+        <a href="/features/approval.html" class="fs-xs text-brand mt-12 d-inline-block">了解审核流详情 →</a>
       </div>
       <div class="module-card card p-24 transition">
         <div class="icon-box-lg bg-brand-50 text-brand mb-16"><i data-lucide="package-minus" class="icon-md"></i></div>
@@ -322,6 +323,7 @@ details[open] .faq-q .icon { transform: rotate(45deg); }
         <div class="icon-box-lg bg-brand-50 text-brand mb-16"><i data-lucide="package" class="icon-md"></i></div>
         <h3 class="fs-xl fw-6 text-brand-900 m-0 mb-6 ls-1">库存管理</h3>
         <p class="fs-sm lh-16 text-muted m-0">实时查询每个 SKU 的库存数量、所在仓库、批次。支持全仓盘点与库存流水。</p>
+        <a href="/features/inventory.html" class="fs-xs text-brand mt-12 d-inline-block">了解更多 →</a>
       </div>
       <div class="module-card card p-24 transition">
         <div class="icon-box-lg bg-brand-50 text-brand mb-16"><i data-lucide="wallet" class="icon-md"></i></div>
@@ -401,7 +403,7 @@ details[open] .faq-q .icon { transform: rotate(45deg); }
       <div class="platform-card card py-24 px-16 text-center transition"><i data-lucide="globe" class="icon-xl text-brand mx-auto mb-12"></i><h4 class="m-0 mb-4 fs-md fw-6 text-brand-900">Web</h4><p class="m-0 fs-xs text-muted">主流浏览器，无需安装</p></div>
       <div class="platform-card card py-24 px-16 text-center transition"><i data-lucide="monitor" class="icon-xl text-brand mx-auto mb-12"></i><h4 class="m-0 mb-4 fs-md fw-6 text-brand-900">Windows</h4><p class="m-0 fs-xs text-muted">桌面客户端</p></div>
       <div class="platform-card card py-24 px-16 text-center transition"><i data-lucide="laptop" class="icon-xl text-brand mx-auto mb-12"></i><h4 class="m-0 mb-4 fs-md fw-6 text-brand-900">macOS</h4><p class="m-0 fs-xs text-muted">原生应用</p></div>
-      <div class="platform-card card py-24 px-16 text-center transition"><i data-lucide="smartphone" class="icon-xl text-brand mx-auto mb-12"></i><h4 class="m-0 mb-4 fs-md fw-6 text-brand-900">iOS</h4><p class="m-0 fs-xs text-muted">iPhone / iPad</p></div>
+      <div class="platform-card card py-24 px-16 text-center transition"><i data-lucide="smartphone" class="icon-xl text-brand mx-auto mb-12"></i><h4 class="m-0 mb-4 fs-md fw-6 text-brand-900">iOS</h4><p class="m-0 fs-xs text-muted">TestFlight 内测中</p></div>
       <div class="platform-card card py-24 px-16 text-center transition"><i data-lucide="tablet-smartphone" class="icon-xl text-brand mx-auto mb-12"></i><h4 class="m-0 mb-4 fs-md fw-6 text-brand-900">Android</h4><p class="m-0 fs-xs text-muted">手机 / 平板</p></div>
     </div>
     <div class="platforms-visual">
@@ -569,7 +571,7 @@ details[open] .faq-q .icon { transform: rotate(45deg); }
           <li class="d-flex items-start gap-8 fs-sm text-gray-7"><i data-lucide="check" class="icon-sm text-brand flex-shrink-0 mt-2"></i>云端每日备份</li>
           <li class="d-flex items-start gap-8 fs-sm text-gray-7"><i data-lucide="check" class="icon-sm text-brand flex-shrink-0 mt-2"></i>工作日 9-18 点支持</li>
         </ul>
-        <a href="/app/" class="btn btn-primary w-full justify-center mt-auto">购买</a>
+        <a href="/register/" class="btn btn-primary w-full justify-center mt-auto">免费试用 30 天</a>
       </div>
       <div class="price-card custom card d-flex flex-col" style="padding:32px 28px">
         <div class="fs-sm text-muted fw-5 mb-4">企业方案</div>
@@ -583,7 +585,7 @@ details[open] .faq-q .icon { transform: rotate(45deg); }
           <li class="d-flex items-start gap-8 fs-sm text-gray-7"><i data-lucide="check" class="icon-sm text-brand flex-shrink-0 mt-2"></i>专属实施与培训服务</li>
           <li class="d-flex items-start gap-8 fs-sm text-gray-7"><i data-lucide="check" class="icon-sm text-brand flex-shrink-0 mt-2"></i>7×24 专属客户经理</li>
         </ul>
-        <a href="/app/" class="btn btn-secondary w-full justify-center mt-auto">联系销售</a>
+        <a href="mailto:{{ site.support.email }}" class="btn btn-secondary w-full justify-center mt-auto">联系销售</a>
       </div>
     </div>
   </div>
@@ -617,7 +619,7 @@ details[open] .faq-q .icon { transform: rotate(45deg); }
       </details>
       <details class="card mb-12 overflow-hidden">
         <summary class="faq-q">可以试用多长时间？<i data-lucide="plus" class="icon"></i></summary>
-        <div class="fs-md text-muted lh-17" style="padding:0 24px 22px">标准版提供 30 天免费试用，无需绑定支付方式。试用期可使用全部功能、五端访问。30 天后可继续按月或按年付费，已录入的数据完整保留。</div>
+        <div class="fs-md text-muted lh-17" style="padding:0 24px 22px">注册后即可免费试用 30 天，全部功能开放、五端可用，无需绑定支付方式。30 天到期后，升级到单店版（¥299/月）即可继续使用，已录入的数据完整保留。</div>
       </details>
       <details class="card mb-12 overflow-hidden">
         <summary class="faq-q">只读账号能做什么？<i data-lucide="plus" class="icon"></i></summary>
@@ -637,8 +639,7 @@ details[open] .faq-q .icon { transform: rotate(45deg); }
       </div>
       <div class="d-flex flex-col gap-12 items-start">
         <a href="/register/" class="btn btn-primary btn-lg">立即开通试用<i data-lucide="arrow-right" class="icon"></i></a>
-        <a href="/app/" class="btn btn-secondary btn-lg"><i data-lucide="phone" class="icon"></i>预约 1 对 1 演示</a>
-        <span class="fs-sm" style="color:#99A3B3">销售热线 {{ site.support.phone }} · 工作日 9:00-18:00</span>
+        <a href="mailto:{{ site.support.email }}?subject=咨询岩美连锁版" class="btn btn-secondary btn-lg"><i data-lucide="mail" class="icon"></i>邮件咨询</a>
       </div>
     </div>
   </div>