full body character design of lin youyou, 18-year-old chinese girl, freshman in visual communication from chongqing, head to toe, standing pose. twin ponytails, sharp face, screen-reflection highlights in eyes, not cute anime eyes. black-blue techwear jacket as realistic everyday student wear, not mecha, neon inner top, glowing electronic watch, worn noise-canceling headphones around neck, frayed sketchbook in hand, casual pants/skirt with sneakers. slightly impatient confident expression, fingers tapping sketchbook. hard vector-like lineart, slight digital jagged edges, halftone dots, glitch noise, diagonal composition, speed lines. cold blue-purple, cyan-black, fluorescent pink-green, screen cyan-white palette. hand-painted watercolor texture blended with digital manga lineart, "warm-sense cyber maritime silk road manga sketch" style. minimal background: faint chongqing monorail through buildings / hongyadong neon / glass curtain wall reflections, environment hint only. full body head to toe, shoes not cropped, character sheet, clean composition.