Engraved Line-Art Smartphone Scroller

character illustration in fine engraving line-art style, single full-body figure, a young adult around 28 years old absorbed in their smartphone, casual contemporary urban clothing, relaxed natural pose, flat vector cutout style, bold flat color blocks no shading, no outlines no gradients no realism, etched hatching linework, monochrome black ink, lots of negative space, editorial illustration, clean minimal, isolated figure with no background scene, sober refined aesthetic, vertical portrait --ar 3:4 --raw --sw 700 --hd