diff --git a/src/Services/PdfInvoiceService.php b/src/Services/PdfInvoiceService.php
index 89615ac..dbf87d6 100644
--- a/src/Services/PdfInvoiceService.php
+++ b/src/Services/PdfInvoiceService.php
@@ -12,6 +12,8 @@ class PdfInvoiceService
     {
         $html = $this->buildHtml($invoice, $lines, $settings);
 
+        $fontDir = dirname(__DIR__) . '/fonts';
+
         $mpdf = new Mpdf([
             'mode'          => 'utf-8',
             'format'        => 'A4',
@@ -19,6 +21,16 @@ class PdfInvoiceService
             'margin_bottom' => 25,
             'margin_left'   => 25,   // DIN 5008: 25mm links
             'margin_right'  => 15,   // DIN 5008: 15mm rechts
+            'fontDir'       => [$fontDir],
+            'fontdata'      => [
+                'opensans' => [
+                    'R'  => 'OpenSans-Regular.ttf',
+                    'B'  => 'OpenSans-Bold.ttf',
+                    'I'  => 'OpenSans-Italic.ttf',
+                    'BI' => 'OpenSans-BoldItalic.ttf',
+                ],
+            ],
+            'default_font'  => 'opensans',
         ]);
 
         $mpdf->SetTitle('Rechnung ' . ($invoice['rechnungs_nr'] ?? 'Entwurf'));
@@ -107,11 +119,13 @@ class PdfInvoiceService
     <div class="logo-wrap" style="{$logoWrapStyle}">{$logoHtml}</div>
 
     <!-- Adressbereich DIN 5008 Typ A (Anschriftfeld 85mm × 45mm) -->
+    <div style="height:10mm"></div>
     <table class="address-block">
         <tr>
             <!-- Linke Spalte: Anschriftfeld 85mm (Kuvertfenster) -->
             <td class="address-left">
                 <div class="return-address">{$h($settings['firma'] ?? '')} · {$h($settings['strasse'] ?? '')} · {$h($settings['plz'] ?? '')} {$h($settings['ort'] ?? '')}</div>
+                <div style="height:2.5mm;font-size:2.5mm;line-height:2.5mm">&nbsp;</div>
                 <div class="recipient">
                     {$h($customerName)}<br>
                     {$h($inv['strasse'])}<br>
@@ -119,11 +133,12 @@ class PdfInvoiceService
                 </div>
             </td>
             <!-- Rechte Spalte: Dokumententitel -->
-            <td class="address-right" style="text-align:right;vertical-align:top">RECHNUNG</td>
+            <td class="address-right" style="text-align:right;vertical-align:top;font-size:14.7pt">Rechnung</td>
         </tr>
     </table>
 
     <!-- Meta-Felder -->
+    <div style="height:20mm"></div>
     <table class="meta-table">
         <thead>
             <tr>
@@ -190,7 +205,7 @@ HTML;
     <tr>
         <td>
             <strong>{$h($settings['firma'] ?? '')}</strong><br>
-            {$h($settings['inhaber'] ?? '')}<br>
+            Inh. {$h($settings['inhaber'] ?? '')}<br>
             {$h($settings['strasse'] ?? '')}<br>
             {$h($settings['plz'] ?? '')} {$h($settings['ort'] ?? '')}<br>
             USt-ID: {$h($settings['ust_id'] ?? '')}
@@ -216,7 +231,7 @@ HTML;
     private function buildCss(): string
     {
         return <<<CSS
-body { font-family: DejaVu Sans, sans-serif; font-size: 7.8pt; color: #000; }
+body { font-family: opensans, sans-serif; font-size: 7.8pt; color: #000; }
 .invoice-wrap { width: 100%; }
 
 /* Logo */
@@ -230,21 +245,21 @@ body { font-family: DejaVu Sans, sans-serif; font-size: 7.8pt; color: #000; }
 .return-address {
     font-size: 5.5pt; color: #555;
     border-bottom: 0.3pt solid #aaa;
-    padding-bottom: 1mm; margin-bottom: 2mm;
+    padding-bottom: 1mm;
 }
-.recipient { font-size: 7.8pt; line-height: 1.5; min-height: 27.3mm; }
+.recipient { font-size: 10pt; line-height: 1.5; min-height: 27.3mm; }
 
 /* Meta-Felder */
 .meta-table { width: 100%; table-layout: fixed; border-collapse: collapse; margin-bottom: 8mm; font-size: 7pt; }
-.meta-table th { background: #f0f0f0; padding: 2mm; text-align: left; font-size: 6pt; color: #555; border: 0.5pt solid #ccc; }
-.meta-table td { padding: 2mm; border: 0.5pt solid #ccc; }
+.meta-table th { padding: 2mm 2mm 1mm; text-align: left; font-size: 7pt; color: #000; font-weight: bold; }
+.meta-table td { padding: 1mm 2mm 2mm; }
 .meta-table th:last-child, .meta-table td:last-child { text-align: right; }
 
 /* Positionen */
 .pos-table { width: 100%; table-layout: fixed; border-collapse: collapse; margin-bottom: 5mm; font-size: 7pt; }
 .pos-table thead th { background: #f0f0f0; color: #000; padding: 2mm; text-align: right; }
 .pos-table thead th.pos-nr, .pos-table thead th.pos-bez, .pos-table thead th.pos-einheit { text-align: left; }
-.pos-table tbody tr:nth-child(even) { background: #f8f8f8; }
+.pos-table tbody tr:nth-child(even) { background: none; }
 .pos-table tbody td { padding: 1.5mm 2mm; border-bottom: 0.3pt solid #e0e0e0; vertical-align: top; }
 .pos-heading { font-weight: bold; }
 .pos-nr      { width: 8%; }
@@ -261,7 +276,7 @@ body { font-family: DejaVu Sans, sans-serif; font-size: 7.8pt; color: #000; }
 .sum-table .sum-val { text-align: right; padding-right: 0; width: 16%; }
 
 /* Zahlungshinweis */
-.payment-note { margin-top: 5mm; font-size: 7pt; padding: 3mm; background: #f8f8f8; border-left: 2pt solid #2563eb; }
+.payment-note { margin-top: 5mm; font-size: 7pt; padding: 3mm; background: #f0f4ff; border-left: 2pt solid #2563eb; }
 
 /* Fußzeile */
 .footer-table { width: 100%; border-collapse: collapse; font-size: 6pt; border-top: 0.5pt solid #ccc; }
diff --git a/src/Views/invoices/show.php b/src/Views/invoices/show.php
index 09a7610..e05a345 100644
--- a/src/Views/invoices/show.php
+++ b/src/Views/invoices/show.php
@@ -73,39 +73,39 @@ $badgeClass = match($invoice['status']) {
     <?php endif; ?>
 
     <!-- Adressbereich (DIN 5008: 50% = 85mm bei vollem A4-Preview) -->
-    <div class="invoice-address" style="margin-bottom:1.5rem">
+    <div class="invoice-address" style="margin-top:1cm;margin-bottom:1.5rem">
         <div>
-            <div style="font-size:6pt;color:#666;border-bottom:1px solid #ccc;padding-bottom:2px;margin-bottom:4px">
+            <div style="font-size:6pt;color:#666;border-bottom:1px solid #ccc;padding-bottom:2px;margin-bottom:12px">
                 <?= $h($settings['firma'] ?? '') ?> · <?= $h($settings['strasse'] ?? '') ?> · <?= $h(($settings['plz'] ?? '') . ' ' . ($settings['ort'] ?? '')) ?>
             </div>
-            <div style="line-height:1.5">
+            <div style="line-height:1.5;font-size:10pt">
                 <?= $h($customerName) ?><br>
                 <?= $h($invoice['strasse']) ?><br>
                 <?= $h($invoice['plz']) ?> <?= $h($invoice['ort']) ?>
                 <?php if ($invoice['land'] !== 'DE'): ?><br><?= $h($invoice['land']) ?><?php endif; ?>
             </div>
         </div>
-        <div style="text-align:right">RECHNUNG</div>
+        <div style="text-align:right;font-size:14pt">Rechnung</div>
     </div>
 
     <!-- Meta-Tabelle -->
-    <table style="width:100%;border-collapse:collapse;margin-bottom:1.5rem;font-size:.7rem">
+    <table style="width:100%;border-collapse:collapse;margin-top:2cm;margin-bottom:1.5rem;font-size:.7rem">
         <thead>
-            <tr style="background:#f0f0f0">
-                <th style="padding:.4rem .5rem;text-align:left;border:1px solid #ddd;font-weight:normal;white-space:nowrap">Betreff</th>
-                <th style="padding:.4rem .5rem;text-align:left;border:1px solid #ddd;font-weight:normal;white-space:nowrap">Rechnungsnummer</th>
-                <th style="padding:.4rem .5rem;text-align:left;border:1px solid #ddd;font-weight:normal;white-space:nowrap">Kundennummer</th>
-                <th style="padding:.4rem .5rem;text-align:left;border:1px solid #ddd;font-weight:normal;white-space:nowrap">Leistungszeitraum</th>
-                <th style="padding:.4rem .5rem;text-align:right;border:1px solid #ddd;font-weight:normal;white-space:nowrap;width:100%">Datum</th>
+            <tr>
+                <th style="padding:.4rem .5rem;text-align:left;white-space:nowrap;font-weight:bold">Betreff</th>
+                <th style="padding:.4rem .5rem;text-align:left;white-space:nowrap;font-weight:bold">Rechnungsnummer</th>
+                <th style="padding:.4rem .5rem;text-align:left;white-space:nowrap;font-weight:bold">Kundennummer</th>
+                <th style="padding:.4rem .5rem;text-align:left;white-space:nowrap;font-weight:bold">Leistungszeitraum</th>
+                <th style="padding:.4rem .5rem;text-align:right;white-space:nowrap;width:100%;font-weight:bold">Datum</th>
             </tr>
         </thead>
         <tbody>
             <tr>
-                <td style="padding:.4rem .5rem;border:1px solid #ddd;white-space:nowrap"><?= $h($invoice['betreff']) ?></td>
-                <td style="padding:.4rem .5rem;border:1px solid #ddd;white-space:nowrap;font-weight:700"><?= $h($invoice['rechnungs_nr'] ?? 'Entwurf') ?></td>
-                <td style="padding:.4rem .5rem;border:1px solid #ddd;white-space:nowrap"><?= $h($invoice['kundennummer']) ?></td>
-                <td style="padding:.4rem .5rem;border:1px solid #ddd"><?= $lzHtml ?: '–' ?></td>
-                <td style="padding:.4rem .5rem;border:1px solid #ddd;white-space:nowrap;text-align:right"><?= $h(View::formatDate($invoice['rechnungs_datum'])) ?></td>
+                <td style="padding:.4rem .5rem;white-space:nowrap"><?= $h($invoice['betreff']) ?></td>
+                <td style="padding:.4rem .5rem;white-space:nowrap;font-weight:700"><?= $h($invoice['rechnungs_nr'] ?? 'Entwurf') ?></td>
+                <td style="padding:.4rem .5rem;white-space:nowrap"><?= $h($invoice['kundennummer']) ?></td>
+                <td style="padding:.4rem .5rem"><?= $lzHtml ?: '–' ?></td>
+                <td style="padding:.4rem .5rem;white-space:nowrap;text-align:right"><?= $h(View::formatDate($invoice['rechnungs_datum'])) ?></td>
             </tr>
         </tbody>
     </table>
@@ -169,7 +169,7 @@ $badgeClass = match($invoice['status']) {
     <div style="border-top:1px solid #ccc;padding-top:.75rem;display:grid;grid-template-columns:1fr 1fr 1fr auto;gap:1rem;font-size:.58rem;color:#555">
         <div style="min-width:0">
             <strong><?= $h($settings['firma'] ?? '') ?></strong><br>
-            <?= $h($settings['inhaber'] ?? '') ?><br>
+            Inh. <?= $h($settings['inhaber'] ?? '') ?><br>
             <?= $h($settings['strasse'] ?? '') ?><br>
             <?= $h(($settings['plz'] ?? '') . ' ' . ($settings['ort'] ?? '')) ?><br>
             USt-ID: <?= $h($settings['ust_id'] ?? '') ?>
diff --git a/src/fonts/OpenSans-Bold.ttf b/src/fonts/OpenSans-Bold.ttf
new file mode 100644
index 0000000..51a6bb8
Binary files /dev/null and b/src/fonts/OpenSans-Bold.ttf differ
diff --git a/src/fonts/OpenSans-BoldItalic.ttf b/src/fonts/OpenSans-BoldItalic.ttf
new file mode 100644
index 0000000..7f58199
Binary files /dev/null and b/src/fonts/OpenSans-BoldItalic.ttf differ
diff --git a/src/fonts/OpenSans-Italic.ttf b/src/fonts/OpenSans-Italic.ttf
new file mode 100644
index 0000000..88c01b6
Binary files /dev/null and b/src/fonts/OpenSans-Italic.ttf differ
diff --git a/src/fonts/OpenSans-Regular.ttf b/src/fonts/OpenSans-Regular.ttf
new file mode 100644
index 0000000..abd6746
Binary files /dev/null and b/src/fonts/OpenSans-Regular.ttf differ
diff --git a/src/version.txt b/src/version.txt
index 0ebbc35..b52cf7f 100644
--- a/src/version.txt
+++ b/src/version.txt
@@ -1 +1 @@
-1-260427
+1-260428