https://czerwinskistudio.com Writing about lessons learned building customer service SaaS, frontend infrastructure challenges, and technical decisions. https://czerwinskistudio.com/blog/media-queries-vs-container-queries I discovered container queries and realized we've been thinking about responsive design all wrong. Here's why this changes everything. Sat, 17 Jan 2026 00:00:00 GMT https://czerwinskistudio.com/blog/iterator-helpers-performance I thought I knew how to process arrays efficiently until I hit a memory wall with large datasets. Iterator helpers changed everything. Wed, 14 Jan 2026 00:00:00 GMT