Black-ink engraving in the style of a 19th-century newspaper etching, dense fine cross-hatching and line shading, no soft gradients of two stacks of paper patent documents on a desk, one towering and one short, beside a smartphone and a drafting pen, limited palette of near-black ink and golden yellow on plain white (the only colour besides black is golden yellow), bold simple silhouettes, generous empty space, magazine infographic style, no text, no letters, no numbers, no border