Add images, expand CSS, adjust animation

Add four new PNG assets and broaden the generated CSS utilities and variables to support new spacing, widths, scale transforms, gaps, colors, hover/group-hover states, transitions and object/pointer utilities. Introduces @Property declarations for scale variables and initializes transform vars for broader browser support. Also tweaks the SVG fill in links/index.html and reduces ScrollSmoother smoothness from 3 to 2 in animations.js to adjust scroll feel.

Author: codebythiago