/* Trust page boundary diagram: your infra vs RegVision, dashed divider,
   single labeled line for metadata-only crossing. */

.boundary-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: stretch;
  gap: 24px;
  margin: 32px 0;
}
.boundary-box {
  border: 1px solid var(--border-s);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.boundary-box-label { font-family: var(--f-dot); font-size: var(--t-label); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 8px; }
.boundary-box-desc { font-size: var(--t-body-sm); color: var(--muted); line-height: 1.6; }
.boundary-divider { position: relative; width: 0; border-left: 1px dashed var(--border-s); }
.boundary-link-label {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) rotate(-90deg);
  white-space: nowrap;
  background: var(--bg);
  padding: 4px 8px;
  font-family: var(--f-mono);
  font-size: var(--t-label);
  color: var(--muted);
}
@media (max-width: 720px) {
  .boundary-diagram { grid-template-columns: 1fr; }
  .boundary-divider { border-left: none; border-top: 1px dashed var(--border-s); width: 100%; height: 0; margin: 8px 0; }
  .boundary-link-label { transform: translate(-50%, -50%); }
}