/* WK-025 B: measured D source colors and reference geometry; no v0.9 token layer. */
:root {
  --page:#f8f7fe; --surface:#fff; --ink:#18181b; --heading:#1f1635; --muted:#71717a;
  --purple:#8b5cf6; --pale:#ddd6fe; --soft:#ede8fa; --line:#e4e4e7;
  --font:SourceInter,SourceCN,Arial,sans-serif;
  --safe-top-extra:max(0px,calc(env(safe-area-inset-top,0px) - 44px));
  --nav-bottom:max(17px,env(safe-area-inset-bottom,0px));
}