/* ───────────────────────────────────────────────────────────────────────────── Ligo AI Studio ambient background — the full layered kit. Include on EVERY Ligo-branded surface so the brand reads as one app. Pairs with assets/js/ligo-ambient.js (the code-rain "waterfall"). Extracted from ligotrades-mendoza.html, retoned to the app palette (ava-dashboard.html). Three fixed layers, all behind page content: z-index -3 #codeRain — the cascading code-rain "waterfall" (canvas + JS) z-index -2 body::before — a faint amber dot-grid that slowly breathes z-index -1 body::after — a slow amber/cyan aurora drift USAGE on a page: 1. (AFTER the page's own