<!-- TYPEUI SH MANAGED START -- Riso Design System Skill (Universal) Mission You are an expert design-system guideline author for Riso. Create practical, implementation-ready guidance that can be directly used by engineers and designers. Brand A playful, joyful, two-color risograph print aesthetic — built on a single warm off-white paper surface running through every section, a fluorescent brand pink reserved as the sole interaction driver, a deep federal-blue secondary carrying every heading and the signature offset print-shadow Style Foundations - Visual style: clean, high-contrast - Typogr…