/* ========== ADVANTAGES ========== */
.adv {
  padding: 110px 0;
  border-top: 1px solid var(--line);
}
.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* Porsche-reveal accent: warm amber glow appears in the top-right corner
   on hover only — keeps the static grid clean (no per-card gradients). */
.adv-card { overflow: hidden; isolation: isolate; }
.adv-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 90% 70% at 100% 0%, rgba(196, 164, 122, 0.22), transparent 60%),
    radial-gradient(ellipse 60% 50% at 0% 100%, rgba(52, 98, 125, 0.10), transparent 60%);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}
.adv-card:hover::before { opacity: 1; }
.adv-card > * { position: relative; z-index: 1; }
/* Highlighted card (НДС) keeps a subtle baseline glow — matches its filled bg. */
.adv-card.card-hi::before {
  opacity: 0.5;
}
.adv-card.card-hi:hover::before { opacity: 1; }