feat: replace technical drawings with premium animated design elements (DrillOrbit + StratumLines)

Former-commit-id: f56a9d40b6b4068691b1d8851da455da6514fa3c

components/layout/Footer.tsx

@@ -3,6 +3,7 @@ import Image from 'next/image';
 import { useLocale } from 'next-intl';
 import { ShieldCheck, Leaf, Lock, Accessibility, Zap } from 'lucide-react';
 import { LanguageSwitcher } from './LanguageSwitcher';
+import { StratumLines } from '@/components/ui/decorations/StratumLines';
 
 interface CompanyInfo {
   contactEmail: string;
@@ -150,6 +151,8 @@ export function Footer({ companyInfo }: FooterProps) {
           <div className="flex items-center gap-2"><Zap className="w-4 h-4 text-white/40" /><span>High Performance</span></div>
         </div>
       </div>
+      {/* Decorative: abstract earth strata */}
+      <StratumLines placement="bottom-right" />
     </footer>
   );
 }