IndexA small collection of design engineering concepts.TypographyAaLetter SpacingTracking should tighten as type gets bigger.Text Wrappingtext-balance for headings, text-pretty for paragraphs.ColorOKLCHA color space where lightness actually means lightness.LayoutNested Border RadiusOuter radius = inner radius + padding.MotionIcon MorphSwapping icons with blur, scale, and a spring.SoundInterface SFXSound as a texture, not a notification.