帧规则：日本电视手绘动画，三帧一拍有限动画，线条在跳帧中移动，无 CG 平滑插值，无流畅运动。

Frame rule: Japanese TV hand-drawn animation, limited animation on threes, lines move in skipped frames, no CG smooth interpolation, no smooth motion.

Style anchor: Japanese TV anime look, key-animation aesthetic, limited animation on threes, motion with skipped frames, visible jumps between frames, low frame rate hand-drawn feel, no fluid motion, keep the skipped-frame feel, rough hand-drawn lines, uneven ink, outline weight that changes sharply, lines that suddenly thicken at joints and hair tips, sketch lines and overlapping lines left in on purpose, raw pencil-sketch strokes, shaky broken lines left unpolished, flat cel color mixed with hatched shadows, cross-hatching around the eyes and jaw, hard-edged shadow shapes, stacked ink lines in the darks.