Online: add TPM 2.0 purchase links

docs/nav.html

@@ -1,6 +1,6 @@
 <nav class="navbar navbar-expand-lg mi899-main-nav">
     <div class="collapse navbar-collapse fs-4">
-        <ul class="navbar-nav">
+        <ul class="navbar-nav" style="width: 100%;">
             <li class="nav-item">
                 <a class="nav-link" href="index.html">Home</a>
             </li>
@@ -20,6 +20,21 @@
                     <li><a class="dropdown-item" href="https://miyconst.github.io/hardware/2025/09/22/tpm2.0-machinist-x99.html">TPM 2.0 modules for Chinese X99 motherboards - Q/A</a></li>
                 </ul>
             </li>
+            <li style="flex-grow: 1;"></li>
+            <li class="nav-item dropdown pull-right">
+                <a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown">
+                    Buy X99 TPM 2.0
+                </a>
+                <div class="dropdown-menu" aria-labelledby="navbarDropdown">
+                    <!--<a class="dropdown-item" href="#">Another action</a>-->
+                    <div class="fs-6" style="padding: var(--bs-dropdown-item-padding-y) var(--bs-dropdown-item-padding-x);">
+                        I am not affiliated with or responsible for any of the linked TPM 2.0 modules.
+                    </div>
+                    <div class="dropdown-divider"></div>
+                    <a class="dropdown-item" href="https://tpm2.com.br/" rel="nofollow" target="_blank" title="Opens in a new tab">🇧🇷 In Brazil: tpm2.com.br</a>
+                    <a class="dropdown-item" href="https://www.wallapop.com/user/manuelm-471801574" rel="nofollow" target="_blank" title="Opens in a new tab">🇪🇸 In Spain: Flashchip</a>
+                </div>
+            </li>
         </ul>
     </div>
 </nav>