feat: update UI styling and add new overview sections

- Changed DarkCard border radius from rounded-3xl to rounded-xl for more subtle styling
- Added ComputeOverview section to compute page
- Replaced StackSectionLight with new StackSectionDark component featuring enhanced aurora effects and improved visual hierarchy

src/pages/home/HomePage.tsx

@@ -1,7 +1,7 @@
 import { useRef } from 'react'
 import { AnimatedSection } from '../../components/AnimatedSection'
 import { HomeAurora } from './HomeAurora'
-import { StackSectionLight } from './StackSection'
+import { StackSectionDark } from './StackSectionDark'
 import { WorldMap } from './HomeGlobe'
 import { HomeBenefits } from './HomeBenefits'
 import { CallToAction } from './CallToAction'
@@ -18,7 +18,7 @@ export default function HomePage() {
   return (
     <div>
       <AnimatedSection>
-        <HomeAurora onGetStartedClick={handleScrollToSlider} />
+        <HomeAurora/>
       </AnimatedSection>
 
       <AnimatedSection id="next-section">
@@ -30,7 +30,7 @@ export default function HomePage() {
       </AnimatedSection>
 
       <AnimatedSection>
-        <StackSectionLight />
+        <StackSectionDark />
       </AnimatedSection>
 
       <AnimatedSection ref={sliderRef}>