Summary: GymBeam: Added sale banner

Why It Matters: The website now shows a big sale right away. This could make people want to buy things more.

What Changed:

• Removed popular search terms like "protein" and "kreatin."
• Added a new banner about a "Velký podzimní výprodej" (Big Autumn Sale) with up to 80% off.
• Added a link to the sale page.
• Removed a section about Chlorella and its health benefits.