.aeos-architecture {
  position: relative;
  isolation: isolate;
  overflow: clip;
  perspective: 1200px;
  background:
    radial-gradient(circle at 20% 0%, var(--color-halo), transparent 36%),
    linear-gradient(145deg, var(--color-surface), var(--color-canvas-raised));
}

.aeos-architecture::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, transparent 0 9%, var(--color-border) 9.2% 9.4%, transparent 9.6% 100%);
  opacity: 0.22;
  pointer-events: none;
}

.aeos-architecture > article {
  position: relative;
  transform-style: preserve-3d;
}

.aeos-architecture .structured-field {
  position: relative;
  margin-block-start: var(--space-4);
}

.aeos-architecture .structured-field > p > strong {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.aeos-architecture .architecture-primary > .public-items,
.aeos-architecture .architecture-support-deck > .public-items {
  display: grid;
  gap: var(--space-3);
  transform-style: preserve-3d;
}

.aeos-architecture .architecture-primary > .public-items {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  counter-reset: architecture-stage;
}

.aeos-architecture .architecture-support-deck > .public-items {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.architecture-stage,
.architecture-support {
  position: relative;
  min-width: 0;
  margin: 0;
  border: var(--border-thin) solid var(--color-border-strong);
  border-radius: var(--radius-medium);
  background:
    linear-gradient(145deg, var(--color-halo), transparent 52%),
    var(--color-surface);
  box-shadow: var(--shadow-low);
  transform-style: preserve-3d;
  backface-visibility: hidden;
}

.architecture-stage {
  min-height: 15rem;
  padding: var(--space-4);
  counter-increment: architecture-stage;
  transform: rotateX(2deg) rotateY(-2deg) translateZ(0);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.architecture-stage::before {
  content: counter(architecture-stage, decimal-leading-zero);
  display: inline-grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  margin-block-end: var(--space-3);
  border: var(--border-thin) solid var(--color-border-strong);
  border-radius: 999px;
  color: var(--color-signal);
  background: var(--color-canvas-raised);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 800;
}

.architecture-stage::after {
  content: "";
  position: absolute;
  inset-inline: 12%;
  inset-block-end: -0.7rem;
  height: 0.8rem;
  border-radius: 50%;
  background: var(--color-halo);
  filter: blur(0.45rem);
  opacity: 0.45;
  animation: architecture-flow 7s ease-in-out infinite;
  pointer-events: none;
}

.architecture-stage dt,
.architecture-support dt {
  margin-block-start: 0.65rem;
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 800;
  letter-spacing: 0.03em;
}

.architecture-stage dd,
.architecture-support dd {
  margin-inline-start: 0;
  color: var(--color-text-muted);
  line-height: 1.55;
}

.architecture-stage dt:nth-of-type(2) + dd,
.architecture-support dt:nth-of-type(2) + dd {
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--step-1);
  font-weight: 800;
  line-height: 1.15;
}

.architecture-stage:hover,
.architecture-stage:focus,
.architecture-stage:focus-visible,
.architecture-stage.is-active {
  z-index: 2;
  border-color: var(--color-accent);
  box-shadow: var(--shadow-high, var(--shadow-low));
  transform: rotateX(0) rotateY(0) translateY(-0.35rem) translateZ(1.5rem);
}

.architecture-stage:focus-visible,
.architecture-support:focus-visible {
  outline: 0.2rem solid var(--color-accent);
  outline-offset: 0.2rem;
}

.architecture-support {
  min-height: 10rem;
  padding: var(--space-3);
  transform: translateZ(-0.35rem);
  transition:
    transform 160ms ease,
    border-color 160ms ease;
}

.architecture-support:hover,
.architecture-support:focus-visible {
  border-color: var(--color-signal);
  transform: translateY(-0.2rem) translateZ(0.25rem);
}

.aeos-architecture[data-active-stage] .architecture-stage:not(.is-active) {
  opacity: 0.82;
}

.aeos-architecture.is-compact .architecture-primary > .public-items {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.aeos-architecture.is-compact .architecture-stage {
  min-height: 10rem;
  padding: var(--space-3);
}

@keyframes architecture-flow {
  0%, 100% {
    opacity: 0.2;
    transform: scaleX(0.7);
  }
  50% {
    opacity: 0.65;
    transform: scaleX(1);
  }
}

@media (max-width: 64rem) {
  .aeos-architecture .architecture-primary > .public-items,
  .aeos-architecture.is-compact .architecture-primary > .public-items {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .aeos-architecture .architecture-support-deck > .public-items {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 44rem) {
  .aeos-architecture {
    overflow: visible;
    perspective: 800px;
  }

  .aeos-architecture .architecture-primary > .public-items,
  .aeos-architecture.is-compact .architecture-primary > .public-items,
  .aeos-architecture .architecture-support-deck > .public-items {
    grid-template-columns: 1fr;
  }

  .architecture-stage,
  .architecture-support {
    min-height: 0;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .architecture-stage,
  .architecture-support,
  .architecture-stage::after {
    animation: none !important;
    transition: none !important;
  }

  .architecture-stage:hover,
  .architecture-stage:focus,
  .architecture-stage:focus-visible,
  .architecture-stage.is-active,
  .architecture-support:hover,
  .architecture-support:focus-visible {
    transform: none;
  }
}