Design tokens for Spazio Bianco sections: Spazio Bianco is a fintech/SaaS marketing theme built as a single white column framed by hairline borders on a diagonally striped backdrop: tight technical type, a lime-yellow + teal accent pair, tactile buttons, and heavy showcase shadows. When you build new UI here, it should be indistinguishable from the existing pages. Needs a Lexington MCP key.