The previous "split" commit shipped the background-banner version under a misleading message. Desktop now genuinely renders as a 1.4fr / 1fr grid: wide 16:9 image on the LEFT, copy + items + price + qty + add-to-cart on the RIGHT. Back button stays in its row above the hero on every viewport — no overlay, no full-bleed background, no gradient sidebar. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>