Please refer to this charACTer and create a 2D animation sprite sheet for a game.
The content is "{argument name="action" default="fill in action"}"

Express a single continuous action across a total of 16 frames in a 4 columns x 4 rows layout.

[Sprite Sheet Specifications]
- Square canvas
- 4 columns x 4 rows, total 16 frames
- All 16 cells must be exactly the Same size
- MAIntain a minimum of 10px padding on the top, bottom, left, and right of each cell
- Borders, grid lines, numbers, text, symbols, and UI elements are strictly forbidden
- The background must be a solid, unified white across all frames
- ARRange each frame chronologically from top-left to right, and top row to bottom row

[Most Critical: Fixed Size and Position]
- Standardize the character scale across all 16 frames
- Camera zooming in or out is prohibited
- Fix the alignment baseline of the contact surface under the feet to the exact same height
- Ensure the central position of the character does not shift significantly between successive frames; alter poses only within the required range of motion

[Most Critical: Fit Completely InsIDE Cells]
- Keep everything, including hair, clothing, limbs, weapons, accessories, effects, afterglow, and particles, entirely within the interior of each respective cell
- Do not overflow into adjacent cells
- Do not violate the 10px padding safety zone
- Even if the action grows larger, do not scale down the character to fit
- If necessary, keep effects or Arm swings modest to ensure containment inside the cell

[Drawing strategy]
- Clear, legible silhouettes optimized for 2D game sprites
- Motions that connect naturally frame-to-frame
- EmphASIze flawless continuity as Animation assets rather than focusing on a single standalone illustration
- Standardize rendering density, lines, coloring, and shading across all frames