diff --git a/partials/landing/main/home.php b/partials/landing/main/home.php
index e50d05d..323eb6d 100755
--- a/partials/landing/main/home.php
+++ b/partials/landing/main/home.php
@@ -9,7 +9,10 @@ $flash = $app->flash()->get();
 ?>
 <div class="card">
   <div class="pill">env: <?= htmlspecialchars(defined('APP_ENV') ? APP_ENV : 'local', ENT_QUOTES) ?></div>
-  <h1 style="margin-top: .75rem;"><?= htmlspecialchars(t('common.title'), ENT_QUOTES) ?></h1>
+  <div style="display:flex; align-items:center; gap:.75rem; margin-top:.75rem;">
+    <img src="/assets/images/logo.png" alt="Nexus" style="height:40px; width:auto;">
+    <h1 style="margin:0;"><?= htmlspecialchars(t('common.title'), ENT_QUOTES) ?></h1>
+  </div>
 
   <p class="muted"><?= htmlspecialchars(t('common.intro'), ENT_QUOTES) ?></p>
 
diff --git a/public/assets/images/logo.png b/public/assets/images/logo.png
new file mode 100644
index 0000000..b72c9e9
Binary files /dev/null and b/public/assets/images/logo.png differ
diff --git a/src/App/AccountPages.php b/src/App/AccountPages.php
index 24c173a..a6adc48 100755
--- a/src/App/AccountPages.php
+++ b/src/App/AccountPages.php
@@ -378,7 +378,7 @@ final class AccountPages
         $ctx = stream_context_create([
             'http' => [
                 'method' => 'GET',
-                'header' => "User-Agent: papa-kind-treff/1.0\r\nAccept-Language: de\r\n",
+                'header' => "User-Agent: nexus/1.0\r\nAccept-Language: de\r\n",
                 'timeout' => 6,
             ],
         ]);
diff --git a/src/App/Config.php b/src/App/Config.php
index e2d07bc..0d4cc04 100755
--- a/src/App/Config.php
+++ b/src/App/Config.php
@@ -11,6 +11,18 @@ class Config
     ) {
     }
 
+    public function primaryUrl(): string
+    {
+        if (defined('APP_URL_PRIMARY') && APP_URL_PRIMARY !== '') {
+            return APP_URL_PRIMARY;
+        }
+        $domain = $this->cookieDomain();
+        if ($domain) {
+            return 'https://' . $domain;
+        }
+        return '';
+    }
+
     public function cookiePrefix(): string
     {
         if (defined('APP_PREFIX') && APP_PREFIX !== '') {
diff --git a/src/App/I18n.php b/src/App/I18n.php
index 44a9b60..2761a0c 100755
--- a/src/App/I18n.php
+++ b/src/App/I18n.php
@@ -13,8 +13,8 @@ final class I18n
         // Minimal example translations (normally load JSON/PHP arrays from disk)
         $this->fallback = [
             'common' => [
-                'title' => 'Papa-Kind-Treff',
-                'intro' => 'Väter vernetzen sich für Treffen mit und ohne Kinder.',
+                'title' => 'Nexus',
+                'intro' => 'Internal configuration editor',
             ],
             'cta' => [
                 'primary' => 'Weiter',
@@ -48,7 +48,7 @@ final class I18n
 
         // Built-ins
         $val = str_replace('{year}', date('Y'), $val);
-        $val = str_replace('{{primary_url}}', $this->config->primaryUrl, $val);
+        $val = str_replace('{{primary_url}}', $this->config->primaryUrl(), $val);
 
         foreach ($vars as $k => $v) {
             $val = str_replace('{' . $k . '}', (string)$v, $val);
diff --git a/src/App/Mailer.php b/src/App/Mailer.php
index 26bce31..7ba3454 100755
--- a/src/App/Mailer.php
+++ b/src/App/Mailer.php
@@ -102,7 +102,7 @@ final class Mailer
                     $this->log('template_api_success', ['template' => $id, 'subject' => $decoded['subject'] ?? null, 'html_len' => strlen((string)$decoded['html'])]);
                     return [
                         'id' => $id,
-                        'subject' => $decoded['subject'] ?? 'Papa-Kind-Treff',
+                        'subject' => $decoded['subject'] ?? 'Nexus',
                         'html' => $decoded['html'],
                     ];
                 }
@@ -113,7 +113,7 @@ final class Mailer
         }
 
         // Fallback: einfacher Text
-        $subject = 'Papa-Kind-Treff';
+        $subject = 'Nexus';
         $body = $id;
         foreach ($vars as $k => $v) {
             $body = str_replace(['{' . $k . '}', '{{' . $k . '}}'], (string)$v, $body);
@@ -134,7 +134,7 @@ final class Mailer
 
         $tpl = $this->renderTemplate($templateKey, $vars);
         $resolvedId = $tpl['id'] ?? $templateKey;
-        $subject = $tpl['subject'] ?? 'Papa-Kind-Treff';
+        $subject = $tpl['subject'] ?? 'Nexus';
         $html = $tpl['html'] ?? '';
 
         $this->log('mail_rendered_template', [
@@ -147,7 +147,7 @@ final class Mailer
 
         $transport = getenv('MAIL_TRANSPORT') ?: 'mail';
         $fromEmail = getenv('MAIL_FROM') ?: 'no-reply@' . $this->app->config()->primaryDomain;
-        $fromName  = getenv('MAIL_FROM_NAME') ?: 'Papa-Kind-Treff';
+        $fromName  = getenv('MAIL_FROM_NAME') ?: 'Nexus';
 
         $this->log('mail_send_start', [
             'template_key' => $templateKey,