Art style: 3D Medical Illustration.
A macro airway-surface view fills the frame, showing a thin even layer of secretion gliding smoothly along delicate tissue without buildup, obstruction, or irritation. Extreme close-up from a shallow side angle, emphasizing motion pathway and low-friction flow across the surface. Soft luminous medical lighting reveals the surface clearly without harsh contrast. Mood is efficient, calm, and physiologically satisfying, illustrating effortless function. No external person appears. Dominant colors: pale blue, pearl white, soft pink, translucent aqua, light gray.
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FINAL STYLE ENFORCEMENT (this is the authoritative rendering directive — it overrides any style wording elsewhere in the prompt):
Render this image entirely in "3D Medical Illustration" style. Match the lighting grammar, material response, colour science, level of realism / stylisation, line weight, and shading model typical of "3D Medical Illustration". Keep the subject, composition, camera angle, lighting direction, and colour palette from the description above — but EVERY surface, skin, fabric, material, and environmental element must be rendered in the "3D Medical Illustration" idiom, not in any other medium.
