/* Diagnostic scroll sequence */
.diagnostic-stage {
  overflow: hidden;
}

.diagnostic-hero {
  display: grid;
  min-height: 70vh;
  grid-template-columns: minmax(280px, 0.64fr) minmax(320px, 1fr);
  gap: clamp(24px, 6vw, 78px);
  align-items: center;
  padding: 32px max(16px, calc((100vw - 1180px) / 2));
}

.diagnostic-meter {
  display: grid;
  gap: 14px;
  border: 1px solid rgba(17, 19, 21, 0.15);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 28px 76px rgba(17, 19, 21, 0.14);
  padding: clamp(18px, 4vw, 34px);
}

.diagnostic-track {
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(17, 19, 21, 0.11);
}

.diagnostic-track span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left center;
  will-change: transform;
}

.diagnostic-scroll {
  min-height: 280vh;
  padding: 24px max(16px, calc((100vw - 1180px) / 2)) 80px;
}

.diagnostic-sticky {
  position: sticky;
  top: 22px;
  display: grid;
  min-height: calc(100vh - 44px);
  grid-template-columns: minmax(280px, 0.52fr) minmax(320px, 1fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
}

.diagnostic-steps {
  display: grid;
  gap: 10px;
}

.diagnostic-step {
  border: 1px solid rgba(17, 19, 21, 0.13);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.62);
  padding: 16px;
  will-change: transform, opacity;
}

.diagnostic-step span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.diagnostic-step strong {
  display: block;
  margin-top: 8px;
  font-size: clamp(22px, 4vw, 42px);
  line-height: 0.95;
  text-transform: uppercase;
}

.diagnostic-visual {
  position: relative;
  min-height: min(70vw, 560px);
  border: 1px solid rgba(17, 19, 21, 0.15);
  border-radius: 8px;
  background:
    radial-gradient(circle at 50% 50%, rgba(104, 216, 214, 0.24), transparent 38%),
    linear-gradient(rgba(17, 19, 21, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 19, 21, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: auto, 34px 34px, 34px 34px;
  box-shadow: 0 28px 76px rgba(17, 19, 21, 0.14);
  overflow: hidden;
}

.diagnostic-node {
  position: absolute;
  display: grid;
  width: clamp(86px, 14vw, 132px);
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid rgba(17, 19, 21, 0.18);
  border-radius: 50%;
  background: var(--tone);
  font-size: 12px;
  font-weight: 950;
  text-transform: uppercase;
  will-change: transform, opacity;
}

.diagnostic-node:nth-child(1) { left: 10%; top: 18%; }
.diagnostic-node:nth-child(2) { right: 14%; top: 12%; }
.diagnostic-node:nth-child(3) { left: 24%; bottom: 16%; }
.diagnostic-node:nth-child(4) { right: 16%; bottom: 20%; }

@media (max-width: 840px) {
  .diagnostic-hero,
  .diagnostic-sticky {
    grid-template-columns: 1fr;
  }

  .diagnostic-sticky {
    position: relative;
    top: auto;
  }

  .diagnostic-scroll {
    min-height: auto;
  }
}