.card {
  position: relative;
  padding: var(--sp-6);
  border: 1px solid var(--c-raise-2);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0));
  transition: border-color var(--dur-base) var(--ease-out-expo),
              transform var(--dur-base) var(--ease-out-expo),
              background var(--dur-base) var(--ease-out-expo);
  overflow: hidden;
  isolation: isolate;
}

.card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: var(--pm-gradient-brand);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--dur-base) var(--ease-out-expo);
}

@media (hover: hover) and (pointer: fine) { .card:hover {
  border-color: transparent;
  transform: translateY(-4px);
} }
@media (hover: hover) and (pointer: fine) { .card:hover::before { opacity: 1; } }

.card__index {
  font-family: var(--ff-display);
  font-size: var(--fs-200);
  font-variation-settings: "opsz" 60, "SOFT" 50, "wght" 400;
  color: var(--c-accent);
  letter-spacing: 0.06em;
}

.card__title {
  font-family: var(--ff-display);
  font-size: var(--fs-700);
  font-variation-settings: "opsz" 144, "SOFT" 50, "wght" 500;
  letter-spacing: var(--ls-display);
  line-height: var(--lh-tight);
  margin-block: var(--sp-3) var(--sp-4);
}

.card__body {
  color: var(--c-text-3);
  font-size: var(--fs-300);
  line-height: var(--lh-loose);
}

.card__list {
  list-style: none;
  margin-top: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  font-size: var(--fs-200);
  color: var(--c-text-2);
  letter-spacing: 0.005em;
}

.card__list li {
  position: relative;
  padding-left: var(--sp-5);
}
.card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 18px;
  height: 1px;
  background: var(--c-accent);
}

.card-stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-5);
}
@media (max-width: 720px) {
  .card-stack { grid-template-columns: 1fr; }
}

/* Site pages (plan 31, Р5): the capability cards are not links, so they do not lift or light up under the pointer;
   a tone step instead of a hairline frame (audit §2); the channel name in plain case, no 01–04. */
[data-site-theme] .card {
  border-color: transparent;
  background: var(--c-surface);
}
@media (hover: hover) and (pointer: fine) {
  [data-site-theme] .card:hover { transform: none; }
  [data-site-theme] .card:hover::before { opacity: 0; }
}
[data-site-theme] .card__index {
  font-size: var(--fs-400);
  letter-spacing: 0;
}