High-resolution scientific talking-head video,
fixed camera, upper body visible,
bright, evenly diffused high-key laboratory lighting,
neutral white balance (D65),
facial exposure significantly higher than background (+0.5 to +0.7 EV to compensate download darkening),
overall facial luminance target 95–100% of ideal display white,
highlights on forehead, cheeks, and nose fully preserved and evenly distributed,
no shadows anywhere on face,
young adult male researcher @wuchangwen in white lab coat and white collared shirt,
clean professional appearance,
very fair, luminous, healthy-looking skin tone,
extra bright, neutral-warm white complexion with subtle pinkish blood undertone,
skin reflectance dominated by diffuse component with strong even scattering,
light fully wraps around facial features,
minimal specular hotspots, no oily shine, no dull matte,
face rendered as planar, uniform, perfectly even luminance,
no makeup, no beauty filter,
@wuchangwen looks directly into camera and says: “A醇真的天生刺激吗？不是。90%的刺痛，都是配方没做缓释。”
Negative prompt:
facial shadows, uneven lighting, dark patches on skin, yellowish skin, grayish skin,
dramatic contrast, contoured face lighting