Create a brand-new Japanese dynamic pricing square promotional image.
Accurately display the text “ダイナミック・プライシング実施中!”“買取金額 18%UP”“2026.08.31まで”.
Use deep cyan, coral orange, creamy white, violet, and bright yellow.
Reorganize the horizontal information into a square format, centering it around a large 18% upward arrow.
Include universal price tags, bar charts, and speed lines.
The Japanese font should be bold, centered, and easy to read quickly.
Do not include any brands, logos, URLs, QR codes, watermarks, or fine print.
Output a high-quality static PNG.
