Exploded patent linework says 'we actually invented something' louder than any lifestyle shot.
Vertical 4:5 cyanotype blueprint sheet: deep Prussian-blue background with crisp white technical linework, faint 10mm drafting grid, aged paper grain and two soft fold creases. Center: a large exploded patent-style drawing of [PRODUCT — e.g. "Grelo, a self-heating stainless travel mug"], its components separated vertically in exploded view with dashed alignment lines running through the axis. Numbered balloon leaders point to each part, labelled in white drafting caps, verbatim: [PART LABELS — e.g. "1. TWIST LID", "2. HEAT CORE", "3. DOUBLE WALL", "4. GRIP BASE"]. Upper left annotation: "FIG. 1 — EXPLODED VIEW". Bottom right: a ruled title block containing stacked drafting lettering, verbatim: [TITLE BLOCK — e.g. "GRELO SELF-HEATING MUG", "PATENT PENDING", "SCALE 1:1", "SHEET 1 OF 1"]. A small circular stamp reading "APPROVED" overlaps the title block at a slight angle. Linework style: precise single-weight strokes, hatching for cross-sections, hand-drafted but exact, no shading gradients. White lines on blue only — no other colors. All lettering legible, straight and correctly spelled; parts mechanically plausible for the product; no photorealistic elements, no watermark.