style: shift text block upwards on white page for more distance to address

lib/pdf-business-card.tsx

@@ -253,7 +253,7 @@ const styles = StyleSheet.create({
   // -- WHITE PAGE (Vorderseite) --
   backContainer: {
     flex: 1,
-    paddingTop: '4mm', // Reduced significantly to pull content up
+    paddingTop: '3mm', // Reduced significantly to pull content up
     paddingLeft: '6mm',
     paddingRight: '6mm',
     flexDirection: 'column',
@@ -261,7 +261,7 @@ const styles = StyleSheet.create({
   backHeader: {
     flexDirection: 'row',
     alignItems: 'center',
-    marginBottom: '8mm', // Generous breathing room
+    marginBottom: '5mm', // Generous breathing room
     width: '100%',
   },
   backLogo: {