Create a square t-shirt graphic design with the following concept:

Title: Retro Futuristic Blocks
Visual style: A vibrant sci-fi poster style fused with vintage comic pixel art, featuring candycore and comic primary colors. The design showcases a double exposure effect of a bustling cityscape arranged in a dynamic grid layout.
Mood: Hypnotic and energetic with a retro-futuristic vibe
Core concept prompt: A bold double exposure pixel art cityscape in a dynamic grid layout, blending sci-fi poster aesthetics with vintage comic style. The color palette is a vivid mix of candycore pastels and strong comic primary colors. Calligraphic typography is minimal and tastefully placed, complementing the high-energy, hypnotic scene without dominating the composition.
Typography density rule: Use at most one tiny, simple brand-like mark or short label only if essential; the graphic must remain primarily visual.

Hard constraints:
- Keep composition centered and shirt-print friendly.
- Use high-contrast, clear forms suitable for print.
- Any text must be large and easily readable.
- Exclude all forbidden elements: real brand logos, celebrity likenesses, political campaign slogans, explicit content, tiny unreadable text
- Do not include real brand names/logos, celebrity likenesses, copyrighted characters, political campaign slogans, hateful content, or explicit content.

Output a clean standalone design graphic, no mockup, no watermark, no background scene.

Create a square t-shirt graphic design with the following concept:

Title: Retro Futuristic Blocks
Visual style: A vibrant sci-fi poster style fused with vintage comic pixel art, featuring candycore and comic primary colors. The design showcases a double exposure effect of a bustling cityscape arranged in a dynamic grid layout.
Mood: Hypnotic and energetic with a retro-futuristic vibe
Core concept prompt: A bold double exposure pixel art cityscape in a dynamic grid layout, blending sci-fi poster aesthetics with vintage comic style. The color palette is a vivid mix of candycore pastels and strong comic primary colors. Calligraphic typography is minimal and tastefully placed, complementing the high-energy, hypnotic scene without dominating the composition.
Typography density rule: Use at most one tiny, simple brand-like mark or short label only if essential; the graphic must remain primarily visual.

Hard constraints:
- Keep composition centered and shirt-print friendly.
- Use high-contrast, clear forms suitable for print.
- Any text must be large and easily readable.
- Exclude all forbidden elements: real brand logos, celebrity likenesses, political campaign slogans, explicit content, tiny unreadable text
- Do not include real brand names/logos, celebrity likenesses, copyrighted characters, political campaign slogans, hateful content, or explicit content.

Output a clean standalone design graphic, no mockup, no watermark, no background scene.