AI generatedCreate a sub-collections section for a collection page template in the Dawn theme. It should display a grid of clickable image tiles, each showing a collection image and collection name underneath. The section should be configurable so the merchant can add multiple collections manually (each with a collection picker, image, and label). Style it to match Dawn's aesthetic with a clean, premium feel — navy, black, and gold tones where possible. The section should be suitable for a luxury jewellery store and work well on both desktop and mobile.