Title: Letter Foundry — Type in motion
Exact creative prompt: Build a bold typography playground with acid-yellow paper, near-black rules, enormous live specimen text and a strict foundry-style control strip. Let users type their own phrase, choose four system-font voices, adjust letter spacing, switch italic and invert the theme. Use editorial grid discipline, specimen labels and a character-count detail. Responsive standalone HTML5 with no fonts, libraries or dependencies loaded externally.
Description: A typographic laboratory treats language as a visual object, giving visitors immediate control over a dramatic central specimen.
Major visual techniques: Acid monochrome; massive specimen typography; ruled Swiss-style grid; system font contrast; inverted color mode; baseline guide.
Intended interaction model: Edit text, adjust typography controls and toggle the page palette.