/* The selected open layout keeps four continuously visible processing stages. */
.local-section[data-local-frame] .perimeter {
  border: 0;
  border-radius: 0;
  background: transparent;
  overflow: visible;
}
.local-section[data-local-frame] .taxonomy { background: transparent; }
.local-section .step-heading,
.local-section .step-arrow { color: var(--text); }
.local-section .pipeline-step { cursor: default; }
.local-section .pipeline-step::after { display: none; }
.local-section .pipeline-step:hover { background: transparent; }
.local-section .analytics-art { border-bottom: 0; }
.local-section .classify-art > span { animation: classify-glow 6s ease-in-out infinite; }
.local-section .classify-art > span:nth-child(2) { animation-delay: -1.4s; }
.local-section .classify-art > span:nth-child(3) { animation-delay: -2.8s; }
@keyframes classify-glow {
  0%, 100% { opacity: .72; border-color: #3d3d3a; }
  50% { opacity: 1; border-color: #656560; }
}

/* 1. The original layout, with its outer outline and panel fill removed. */
.local-section[data-local-frame="minimal"] .perimeter-header,
.local-section[data-local-frame="minimal"] .perimeter-footer,
.local-section[data-local-frame="minimal"] .taxonomy { padding-inline: 0; }
.local-section[data-local-frame="minimal"] .pipeline { padding-inline: 0; }
.local-section[data-local-frame="minimal"] .stage-detail { margin-inline: 0; }

/* 2–3. Separate the stages with space instead of full-height walls. */
.local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .perimeter-header {
  padding: 8px 0 28px;
  border: 0;
}
.local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .pipeline {
  padding: 0;
  gap: 36px;
}
.local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .pipeline-step {
  border: 0;
  padding: 20px 0 22px;
}
.local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .pipeline-step:hover { background: transparent; }
.local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .pipeline-step::after {
  left: 0;
  right: auto;
  width: 42px;
}
.local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .stage-detail {
  border: 0;
  margin: 10px 0 0;
  padding: 20px 0;
}
.local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .taxonomy {
  border: 0;
  padding: 26px 0;
}
.local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .taxonomy li {
  border: 0;
  padding-left: 0;
}
.local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .perimeter-footer {
  border: 0;
  padding: 18px 0 0;
}

/* 3. Short rules give each stage its own rhythm, like the insight columns. */
.local-section[data-local-frame="rules"] .pipeline { gap: 48px; }
.local-section[data-local-frame="rules"] .pipeline-step { padding-top: 25px; }
.local-section[data-local-frame="rules"] .pipeline-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 72%;
  height: 1px;
  background: #333;
}
.local-section[data-local-frame="rules"] .pipeline-step::after { top: 0; bottom: auto; }
.local-section[data-local-frame="rules"] .stage-detail {
  max-width: var(--text-width);
  margin: 18px auto 0;
}
.local-section[data-local-frame="rules"] .taxonomy {
  max-width: var(--text-width);
  margin-inline: auto;
  border-top: 1px solid var(--line);
}
.local-section[data-local-frame="rules"] .perimeter-footer {
  max-width: var(--text-width);
  margin-inline: auto;
}

@media (max-width: 1100px) {
  .local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .pipeline { gap: 24px; }
}
@media (max-width: 760px) {
  .local-section[data-local-frame] .perimeter-header { flex-wrap: wrap; }
  .local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .pipeline { gap: 22px 30px; }
  .local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .pipeline-step { padding: 20px 0; }
  .local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .pipeline-step::after { left: 0; right: auto; }
  .local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .taxonomy { padding-block: 22px; }
  .local-section[data-local-frame="rules"] .stage-detail { margin-top: 16px; }
}
@media (max-width: 380px) {
  .local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .pipeline { gap: 20px; }
  .local-section:is([data-local-frame="open"], [data-local-frame="rules"]) .classify-art > span {
    min-width: 78px;
    padding-inline: 8px;
  }
}
@media (max-width: 520px) {
  .local-section[data-local-frame] .perimeter-header > span:last-child {
    max-width: none;
    text-align: left;
  }
}