.pencil-trail{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.sketch-toggle{position:fixed;right:22px;bottom:calc(20px + env(safe-area-inset-bottom));z-index:7;min-width:64px;min-height:44px;padding:10px 16px;background:var(--paper);color:var(--ink);border:1px solid var(--line);font:14px Inter,Arial,sans-serif;letter-spacing:0;cursor:pointer}
.sketch-toggle:focus-visible{outline:2px solid var(--ink);outline-offset:4px}
.sketch-surface{position:fixed;inset:150px 0 0;z-index:4;touch-action:none;user-select:none;-webkit-user-select:none}
.sketch-surface[hidden]{display:none}
.sketch-active .pencil-trail{z-index:5}
.home-page.sketch-active .header{z-index:6}
@media(prefers-reduced-motion:reduce){.pencil-trail,.sketch-toggle,.sketch-surface{display:none}}