Pure white background. Neutral gray surface (#F5F5F5). The standard light-mode foundation. What makes Sequence distinctive is the sky-blue accent (#22A7F0). It's brighter than corporate blue, lighter than primary blue. It reads as creative and precise simultaneously. The blue of selection states in design tools. The blue of scrubbing through a timeline.

Lato for everything. Headings at weight 500, body at weight 300. That light body weight is the defining characteristic. At 300, Lato becomes delicate. Refined. The letterforms are visible but never heavy. Reading Sequence's body text feels like reading a whisper. It's there when you need it and invisible when you don't.

The 18px base size is generous, compensating for the light weight. Thin text at small sizes becomes illegible. At 18px, the weight-300 Lato remains perfectly clear. The 0.36px heading letter-spacing adds just a fraction of breath between letters. Not enough to feel spaced. Just enough to feel considered. The 1.225 type scale keeps size steps modest and rational.

No shadows. Flatness is the aesthetic. Hierarchy comes from surface color, text weight, and the blue accent. Nothing floats. Nothing glows. The darken hover effect shifts colors without adding dimension. The smooth motion speed keeps interactions fluid. For a motion design tool, the interface's own motion needs to be impeccable. Any janky transition would undermine the product's credibility.