:root{
  --spark-surface-bg:linear-gradient(145deg,rgba(246,249,255,.96),rgba(210,222,248,.82));
  --spark-surface-border:#aebfe6;
  --spark-surface-shadow:0 14px 38px -30px rgba(33,34,196,.28);
}

/* Shared floating-surface system: only commercial/registration surfaces. */
.tier,.pc,.card,.reg{
  background:var(--spark-surface-bg) !important;
  border:1px solid var(--spark-surface-border) !important;
  box-shadow:var(--spark-surface-shadow) !important;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}

/* Pricing is a set of floating cards, rather than one large container. */
.tiers,.price{
  background:transparent !important;
  border:0 !important;
  box-shadow:none !important;
  backdrop-filter:none !important;
  padding:0 !important;
}

.tier,.pc{
  border-color:#9bb1e2 !important;
  box-shadow:0 12px 32px -27px rgba(33,34,196,.3) !important;
}

/* Preserve catalogue identity: no glass treatment on course/workshop cards. */
.bc,.ws,.mcard{
  backdrop-filter:none;
  -webkit-backdrop-filter:none;
}

@media (max-width:760px){
  .tier,.pc,.card,.reg{border-radius:18px !important}
}