/* shell.css - DocsTool-COM page shell stylesheet (todo 18).
 *
 * Intentionally holds no rules. The WebPageMain look comes from the browser
 * libraries the page loads from /lib/ (web/vendor/lib/: Bootstrap 5.3.7,
 * DataTables 2.3.4, ...), from app-controls.css (the shell controls), and
 * from the inline styles the server renders on each control
 * (crates/server/src/page/layout.rs) and layout.js maintains.
 * Linked last in <head>: the place for shell-only rules, should one ever be
 * needed (no redesign, no extra CSS framework - plan guardrail). */