fix: mobile layout and visual polishing based on review

components/blocks/HeroSection.tsx

@@ -92,7 +92,7 @@ export const HeroSection: React.FC<HeroSectionProps> = (props) => {
             </motion.div>
           )}
           <motion.div variants={itemVariants}>
-            <Heading level={1} variant="white" align={alignment || 'left'} className="mb-4 md:mb-8">
+            <Heading level={1} size="section" variant="white" align={alignment || 'left'} className="mb-4 md:mb-8">
               {title}
             </Heading>
           </motion.div>
@@ -104,7 +104,7 @@ export const HeroSection: React.FC<HeroSectionProps> = (props) => {
             </motion.div>
           )}
           {ctaLabel && ctaHref && (
-            <motion.div variants={itemVariants} className={`mt-8 ${alignment === 'center' ? 'flex justify-center' : ''}`}>
+            <motion.div variants={itemVariants} className={`mt-8 ${alignment === 'center' ? 'flex flex-wrap justify-center gap-4' : 'flex flex-wrap gap-4'}`}>
               <Button
                 href={ctaHref}
                 variant="accent"