Freestyle Football 16-Step Action Poster

Please generate a high-quality, high-definition poster-style storyboard for "{argument name="subject" default="Street Freestyle Football"} · {argument name="action" default="16-Step Action Breakdown"}." The layout should be a square 4x4 grid, with each cell showing a consecutive action step of the same street football performer in the same setting. The entire image should look like a combination of a high-end sports poster and a technical breakdown instructional board, possessing both visual impact and a clear sense of movement explanation.

[Overall Setting]
Theme: Street freestyle football performance (not a match or drill), where one performer completes a continuous set of tricks.
Atmosphere: Street vibe, urban, cinematic, athletic, cool, and rhythmic.
Background: Set in a {argument name="background" default="nighttime urban small street pitch"} or city square football space, with graffiti walls, wire fences, distant building lights, street lamps, and slightly reflective ground. The environment must be consistent and have a trendy street aesthetic.

[Character Requirements]
Protagonist: A young, handsome male freestyle football expert with a light, coordinated, and athletic build, short black hair, confident aura, and fluid, controlled movements.
The same person must appear in all 16 cells; do not change the person per cell.
Outfit: Cool-looking football kit, but no words like "Champion" or specific country names. The clothing should feel like a professional team jersey.

[Layout Requirements]
The full image is a 4x4 grid of 16 cells. Each cell must contain:
1. Large step number (1-16)
2. Chinese action title
3. 2-4 brief Chinese action points
4. Clear full-body action shot of the person
5. Football trajectory arrows / footwork paths
6. The ball must be clearly visible and logically positioned.

Overall font style: Sporty poster aesthetic, clear and powerful. The image should be sharp, clean, and the person and ball must be complete, not cut off at the feet.

[Action Sequence]
Please design 16 continuous actions in order, each distinctly different, forming a complete freestyle routine: [Detailed steps 1-16 including Starting Pose, Sole Pull, Stepover, Flick-up, Knee Control, Around the World, Shoulder Stall, Rainbow Flick, and Final Bow].

[Visual Style]
- High-end sports poster style
- Cinematic night lighting and shadows
- Strong sense of motion with a trendy street aesthetic
- Clear arrows and trajectory lines to help understand the path of the ball
- Color palette dominated by red, black, and gold for a premium feel
- Eye-catching typography suitable for social med