/* Original unified HOME card border/shadow rule, shared unchanged with study. */
  :is(
    .card, .settings-card, .jot, .music-card, .pulse,
    .list, .dt-head, .dt-text, .rings-wrap, #mindPage .sec,
    #viewNow .now, #viewNow .stream, #favList .stream, .heat-in,
    #viewDrive .md-card, #viewBlocked .md-card, #viewTrace .md-card,
    .cal-card, .pd-card, .td-card, .an-card
  ),
  #studyRoom :is(.card,.sheet,.flip-card){
    border-color:var(--card-border);
    box-shadow:var(--card-shadow);
  }