Increase hero gradient for text readability

Top: 35% → 55% opacity (darker reading zone for white text)
Middle: 15% → 10% at 60% (landscape stays vibrant)
Bottom: 40% → 30% (lighter, less needed with dark landscape)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/pages/HomePage/HomePage.tsx

@@ -226,7 +226,7 @@ export const HomePage = React.forwardRef<HTMLDivElement, HomePageProps>(
                   position: 'absolute',
                   inset: 0,
                   background:
-                    'linear-gradient(180deg, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.15) 50%, rgba(0,0,0,0.4) 100%)',
+                    'linear-gradient(180deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.1) 60%, rgba(0,0,0,0.3) 100%)',
                 },
               }}
             >