Celebrate 90 Years of Alpha Sigma Chapter!

Design a commemorative book cover celebrating the 90th anniversary of Alpha Sigma Chapter. The design should prominently display '90th' in bold, creative typography, with the years '1935' and '2025' integrated to mark the chapter's charter year and the present. Incorporate a modern, imaginative style that looks towards the future while honoring the past. Consider using a countdown of years as a visual element, creating a timeline effect that connects '1935' to '2025.' Use elegant and striking colors such as deep blues, golds, or silvers to convey prestige and celebration. The design should be visually balanced, with the title and details harmonizing with the prominent '90th' typography. Add subtle futuristic touches to symbolize growth and progress, ensuring the cover is both commemorative and forward-looking.