/* Signal thread map */
.signal-stage {
  display: grid;
  min-height: 74vh;
  grid-template-columns: minmax(280px, 0.62fr) minmax(320px, 1fr);
  gap: clamp(24px, 6vw, 78px);
  align-items: center;
  overflow: hidden;
  padding: 32px max(16px, calc((100vw - 1180px) / 2));
}

.signal-map-wrap {
  display: grid;
  min-height: clamp(390px, 54vw, 620px);
  place-items: center;
}

.signal-map {
  width: min(100%, 720px);
  height: auto;
  overflow: visible;
}

.signal-frame {
  fill: rgba(255, 255, 255, 0.5);
  stroke: rgba(17, 19, 21, 0.14);
  stroke-width: 2;
}

.signal-path {
  fill: none;
  stroke: var(--tone);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 8;
  filter: drop-shadow(0 12px 24px rgba(17, 19, 21, 0.16));
}

.signal-node {
  fill: var(--paper);
  stroke: var(--ink);
  stroke-width: 5;
  transform-box: fill-box;
  transform-origin: center;
}

.signal-dot {
  fill: var(--coral);
  stroke: var(--paper);
  stroke-width: 5;
  filter: drop-shadow(0 10px 20px rgba(255, 122, 102, 0.36));
}

.signal-label {
  fill: rgba(17, 19, 21, 0.66);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

@media (max-width: 840px) {
  .signal-stage {
    grid-template-columns: 1fr;
  }

  .signal-map-wrap {
    min-height: 360px;
  }
}