/* Shared coordinates keep the SVG routes aligned with stable DOM landmarks. */
.integration-section { position: relative; }
.integration-demo { position: relative; }
.integration-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 18px 25px; border-top: 1px solid var(--line); }
.integration-toolbar > .micro-label { color: var(--muted); font-size: 9px; }
.integration-controls { width: auto; }
.integration-controls #integration-after { color: var(--blue); }
.integration-controls #integration-after[aria-pressed="true"] { color: white; background: var(--blue); }
.integration-map { position: relative; height: 420px; isolation: isolate; }
.integration-paths { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; z-index: -1; }
.integration-paths path { vector-effect: non-scaling-stroke; }
.manual-connections, .system-connections, .decision-connection { transition: opacity .65s ease; }
.manual-connections { opacity: 0; }
.system-connections, .decision-connection { opacity: 1; }
.integration-systems { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); position: absolute; inset: 0 0 auto; height: 23.8%; }
.integration-system { display: flex; flex-direction: column; align-items: center; text-align: center; position: relative; min-width: 0; padding-inline: 8px; }
.integration-system > svg { width: 32px; height: 32px; flex: none; color: #627469; stroke: currentColor; stroke-width: 1.35; fill: none; }
.integration-system strong { display: block; margin-top: 10px; font-size: 16px; font-weight: 550; line-height: 1.35; }
.integration-system > span { display: block; color: var(--muted); font-size: 12px; line-height: 1.5; margin-top: 4px; }
.integration-system::after { content: ""; position: absolute; bottom: -3px; left: calc(50% - 3px); width: 6px; height: 6px; border: 1px solid #70856f; border-radius: 2px; background: var(--canvas); transition: border-color .65s ease, background .65s ease; }
[data-mode="connected"] .integration-system::after { border-color: var(--blue); background: var(--blue); }
.connection-layer { position: absolute; top: 49.2%; left: 50%; transform: translate(-50%, -50%); display: flex; align-items: center; gap: 10px; width: max-content; max-width: 70%; padding: 10px 16px; color: var(--blue-dark); background: var(--canvas); font-size: 13px; font-weight: 500; line-height: 1.4; text-align: center; opacity: 1; transition: opacity .65s ease; }
.connection-layer img { width: 24px; height: 24px; aspect-ratio: 1; object-fit: contain; flex: none; }
.integration-person { position: absolute; top: 68%; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; text-align: center; width: min(390px, 75%); color: var(--human); }
.person-symbol { width: 48px; height: 48px; aspect-ratio: 1; border: 1px solid #c9a589; border-radius: 50%; background: var(--canvas); display: grid; place-items: center; flex: none; }
.person-symbol svg { display: block; width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 1.45; }
.integration-person > div:last-child { padding-top: 10px; }
.integration-person .micro-label { display: block; margin-bottom: 3px; font-size: 9px; line-height: 1.5; }
#integration-role { display: block; font-size: 21px; line-height: 1.35; font-weight: 550; letter-spacing: -.025em; }
#integration-role-detail { margin-top: 5px; font-size: 12px; line-height: 1.5; color: var(--muted); }
.relay-label { position: absolute; top: 47%; transform: translateX(-50%); width: 160px; color: var(--human); font-size: 12px; line-height: 1.6; text-align: center; opacity: 0; transition: opacity .65s ease; }
.relay-label span { white-space: nowrap; }
.relay-left { left: 24%; }
.relay-right { left: 76%; }
.integration-explanation { display: flex; align-items: start; justify-content: space-between; gap: 45px; padding-top: 25px; border-top: 1px solid var(--line); }
#integration-summary { max-width: 640px; color: var(--muted); font-size: 14px; line-height: 1.8; min-height: 51px; }
.integration-principle { display: flex; align-items: baseline; gap: 10px; color: var(--human); font-size: 12px; line-height: 1.7; max-width: 310px; flex: none; }
.integration-principle > span { font-size: 17px; }
[data-mode="manual"] .manual-connections { opacity: 1; }
[data-mode="manual"] .system-connections, [data-mode="manual"] .decision-connection, [data-mode="manual"] .connection-layer { opacity: 0; }
[data-mode="manual"] .relay-label { opacity: 1; }
.integration-signal { opacity: 0; stroke-dasharray: 16 1600; }
[data-mode="connected"] .integration-signal { animation: integration-pass 1.6s ease-in-out both; }
@keyframes integration-pass { 0% { opacity: 0; stroke-dashoffset: 25; } 12% { opacity: .8; } 82% { opacity: .8; } 100% { opacity: 0; stroke-dashoffset: -850; } }

@media (max-width: 1000px) {
  .integration-explanation { gap: 30px; }
  #integration-summary { max-width: 520px; font-size: 13px; }
  .integration-principle { max-width: 235px; font-size: 11px; }
}
@media (max-width: 800px) {
  .integration-toolbar { gap: 20px; padding-top: 20px; }
  .integration-toolbar > .micro-label { font-size: 8px; max-width: 210px; line-height: 1.7; }
  .integration-system strong { font-size: 14px; }
  .integration-system > span { font-size: 11px; }
  .integration-explanation { flex-direction: column; gap: 14px; }
  #integration-summary { max-width: 620px; min-height: 0; }
  .integration-principle { max-width: none; font-size: 12px; }
}
@media (max-width: 560px) {
  .integration-toolbar { flex-direction: column; align-items: stretch; gap: 15px; padding-bottom: 30px; }
  .integration-toolbar > .micro-label { max-width: none; font-size: 9px; }
  .integration-controls { width: 100%; }
  .integration-controls button { min-height: 44px; font-size: 12px; }
  .integration-map { height: 440px; }
  .integration-system { padding-inline: 3px; }
  .integration-system > svg { width: 28px; height: 28px; }
  .integration-system strong { font-size: 12px; line-height: 1.35; min-height: 33px; display: flex; align-items: center; justify-content: center; margin-top: 8px; max-width: 95px; }
  .integration-system > span { font-size: 11px; line-height: 1.4; margin-top: 2px; max-width: 85px; }
  .connection-layer { top: 57.3%; max-width: 76%; padding: 9px 11px; gap: 8px; font-size: 12px; }
  .connection-layer img { width: 21px; height: 21px; }
  .integration-person { width: 88%; }
  .person-symbol { width: 48px; height: 48px; }
  .integration-person > div:last-child { padding-top: 9px; }
  #integration-role { font-size: 20px; }
  #integration-role-detail { font-size: 12px; }
  .relay-label { top: 47%; width: 90px; max-width: 30%; font-size: 11px; line-height: 1.6; }
  .relay-left { left: 18%; }
  .relay-right { left: 82%; }
  .integration-explanation { padding-top: 21px; }
  #integration-summary { font-size: 13px; }
}
@media (prefers-reduced-motion: reduce) {
  .manual-connections, .system-connections, .decision-connection, .connection-layer, .relay-label, .integration-system::after { transition: none; }
  .integration-signal { animation: none !important; }
}
.integration-demo.offscreen .integration-signal,
.integration-demo.document-hidden .integration-signal { animation-play-state: paused; }