.architecture3d {
  margin: 2rem 0;
  padding: clamp(1.2rem, 3vw, 2.3rem);
  border: 1px solid #28434c;
  background: linear-gradient(135deg, #10222d, #0a151f);
  border-radius: 8px;
}
.architecture3d-intro {
  max-width: 850px;
}
.architecture3d h3 {
  margin: 0 0 1rem;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}
.architecture3d p {
  color: #b6c7ce;
  line-height: 1.75;
}
.architecture3d-status {
  min-height: 1.8em;
  font-size: 0.9rem;
}
.architecture3d-stage {
  margin: 1.5rem 0;
}
.architecture3d [hidden] {
  display: none !important;
}
.architecture3d-viewport {
  height: 430px;
  overflow: hidden;
  border: 1px solid #2e4b56;
  border-radius: 6px;
}
.architecture3d-viewport canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: pan-y;
  cursor: grab;
}
.architecture3d-viewport canvas:active {
  cursor: grabbing;
}
.architecture3d-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}
.architecture3d-controls button,
.architecture3d-components button {
  color: #dbeaf0;
  background: #102631;
  border: 1px solid #395761;
  border-radius: 4px;
  min-height: 44px;
  padding: 0.65rem 1rem;
  font: inherit;
  cursor: pointer;
}
.architecture3d-controls button {
  min-width: 44px;
}
.architecture3d-inspection {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) minmax(0, 1.7fr);
  gap: 2rem;
  margin-top: 1.5rem;
}
.architecture3d-components {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  align-self: start;
}
.architecture3d-components button {
  text-align: left;
  line-height: 1.5;
}
.architecture3d-components button[aria-pressed="true"] {
  border-color: #6ddbd0;
  color: #84eee4;
  background: #14373c;
}
.architecture3d-detail {
  min-width: 0;
  border-left: 1px solid #28434c;
  padding-left: 2rem;
}
.architecture3d-detail h4 {
  font-size: 1.3rem;
  margin: 0 0 1.2rem;
  color: #e1eef3;
}
.architecture3d-detail strong {
  display: block;
  font-size: 0.83rem;
  color: #82d9d2;
  letter-spacing: 0.04em;
}
.architecture3d-detail p {
  margin: 0.35rem 0 1.2rem;
  font-size: 0.95rem;
}
.architecture3d-detail ul {
  padding-left: 1.2rem;
  color: #b6c7ce;
  line-height: 1.7;
  font-size: 0.9rem;
}
.architecture3d-detail li {
  margin-bottom: 0.6rem;
}
.architecture3d button:focus-visible,
.architecture3d canvas:focus-visible {
  outline: 3px solid #9af1e8;
  outline-offset: 3px;
}
@media (max-width: 700px) {
  .architecture3d-inspection {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .architecture3d-detail {
    border-left: 0;
    border-top: 1px solid #28434c;
    padding: 1.5rem 0 0;
  }
  .architecture3d-viewport {
    height: 340px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .architecture3d *,
  .architecture3d *::before,
  .architecture3d *::after {
    animation: none !important;
    transition: none !important;
  }
}