Volume 4 of the wallpaper pack. Ten new minimal AI wallpapers in two light themes: nordic fog and riso botanical. What's inside: 10 PNG files at 2560x1440, 16:9. Five nordic minimal walls (birch trunks layered in fog, a winter valley under fog bands, a birch shoreline, a fjord shoreline, a snow field with distant trees) and five riso botanical walls (ferns, monstera, eucalyptus, wildflowers, and ginkgo leaves in a flat two-ink print style with visible ink texture). The nordic walls are muted and bright: pale fog, soft gray-green lines, no harsh contrast. The riso walls pair two flat inks (green, teal, blue, olive, orange, coral, pink, lilac) on light paper tones. Both themes keep the center quiet, so desktop icons and text stay readable. Resolution: generated at 1920x1072, upscaled to 2560x1440. Minimal flat art hides upscale softness, so these hold up on 1440p screens. For 4K monitors, crop instead of stretch. Pairs with Vol.1 to Vol.3 (20 walls each) if you want the full set of 70. License: personal use on your own devices. Don't resell or redistribute the pack as-is, and don't re-upload the files to wallpaper sites. Instant download after checkout. A companion bundle of five related packs is available as the Data Vault Desk Mega Bundle at $29.