What's the impact of responsive design on abandonment?

As a Shopify store owner in the fashion industry, I've been losing sleep over our mobile conversion rates. Our desktop performance is solid, but on mobile? It's a different story. We're seeing massive drop-offs during checkout, and our analytics show that about 68% of our traffic comes from mobile devices. I've watched heat maps where users struggle to tap buttons, zoom in to read product details, or get frustrated with forms that don't align properly. Our add-to-cart rates plummet on mobile, and it feels like we're literally watching potential revenue slip through our fingers. Every misaligned element, every awkward tap target, every unnecessarily complicated mobile interaction is potentially costing us thousands in lost sales. It's not just about looking good anymore—responsive design has become a critical conversion lever. I need a solution that doesn't just make our site 'look' good on mobile, but actually creates a frictionless buying experience that converts hesitant mobile shoppers into confident buyers.