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

Former-commit-id: f56a9d40b6b4068691b1d8851da455da6514fa3c

components/blocks/HeroSection.tsx

@@ -3,6 +3,7 @@ import Image from 'next/image';
 import Reveal from '@/components/Reveal';
 import { Badge, Container, Heading } from '@/components/ui';
 import { Button } from '@/components/ui/Button';
+import { DrillOrbit } from '@/components/ui/decorations/DrillOrbit';
 
 export interface HeroSectionProps {
   title: string;
@@ -70,6 +71,8 @@ export const HeroSection: React.FC<HeroSectionProps> = (props) => {
             )}
           </div>
         </Container>
+        {/* Decorative: abstract HDD bore trajectory */}
+        <DrillOrbit side="right" />
       </section>
     </Reveal>
   );