/*
 * client-pro.css: designs of the PRO documents of the namespace; empty until the first one.
 * Free CSS loaded after the generated LowestCode CSS and outside its compatibility guarantee (230). The four client
 * files load in the rollout order client-sys, client-pro, client-org, client-user; each is owned by its layer.
 * Owned by the PRO namespace; a SYS rollout never delivers or overwrites it.
 * A class carries the prefix .<smaCode>-<docId>- of the document it styles (410).
 */