Title: Mountain Air
Prompt: Create a responsive offline mountain landscape with layered CSS polygon peaks, a pale sun, muted green-blue palette, large serif typography and a button changing the atmosphere. Inline all code.
Description: An imagined mountain view offers a quiet sense of space and fresh air.
Visual techniques: layered polygon mountains, atmospheric gradient, pale sun, large editorial type.
Interaction model: A button toggles a misty color treatment.