Octagonal Black Coffee Bag Packshot

Create a vertical 4:5 studio packshot of one original unbranded coffee bag with an eight-sided, flat-bottom structure. Make all eight vertical facets readable through small plane changes while the bag stands securely on a rough dark slate slab. Use matte deep-black packaging, a prominent frosted-clear zipper at the top, and an original subtle botanical leaf-and-coffee-cherry motif around only the lower third in a muted gold-toned embossed finish; do not claim real foil or premium material unless verified. Leave the central label area blank. Scatter a restrained teaspoon-like patch of coffee grounds on the slate without making a freshness, quantity, or origin claim. Place one generic red coffee-cherry sprig with three cherries and two green leaves beside the bag, based on a verified plant reference. Use one warm high side light and a broad cool fill to reveal facet edges, matte texture, raised motif, zipper, slate grain, powder, fruit, and leaf surfaces. Keep the neutral gray background softly out of focus while the whole bag remains sharp. No brand, B2B sales copy, price, roast, flavor, organic, fair-trade, origin, freshness, allergen, sustainability, gold purity, luxury, or 8K claim; no scannable code, intrusive text, duplicate bag, logo, or watermark.