.diagnostic-hero {
  border-bottom: var(--line-thin) solid var(--color-line);
  background: var(--color-canvas);
}

.diagnostic-hero-grid {
  display: grid;
  min-height: 560px;
  grid-template-columns: minmax(0, .88fr) minmax(420px, 1.12fr);
  align-items: stretch;
}

.diagnostic-intro {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 64px;
  padding-right: clamp(28px, 5vw, 72px);
  padding-bottom: 64px;
}

.diagnostic-intro h1 {
  max-width: 9em;
}

.diagnostic-lead {
  max-width: 34em;
  margin-bottom: 28px;
  color: var(--color-ink-soft);
  font-size: 17px;
  line-height: 1.8;
}

.diagnostic-drawing {
  min-height: 100%;
  margin: 0;
  border-left: var(--line-thin) solid var(--color-line);
  background: var(--color-panel);
}

.diagnostic-drawing svg {
  width: 100%;
  height: 100%;
}

.ip-drawing-grid {
  fill: none;
  stroke: var(--color-panel-strong);
  stroke-width: 1;
}

.ip-drawing-route {
  fill: none;
  stroke: var(--color-accent);
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 4;
}

.ip-drawing-node {
  fill: var(--color-accent);
  stroke: var(--color-accent-deep);
  stroke-width: 2;
}

.ip-drawing-mark {
  fill: none;
  stroke: var(--color-canvas);
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 2;
}

.ip-drawing-terminal {
  fill: var(--color-canvas);
  stroke: var(--color-accent);
  stroke-width: 3;
}

.ip-drawing-line {
  fill: none;
  stroke: var(--color-ink-soft);
  stroke-width: 2;
}

.diagnostic-results-section {
  background: var(--color-panel);
}

.diagnostic-result-panel {
  border: var(--line-thin) solid var(--color-line);
  border-top: 6px solid var(--color-accent);
  border-radius: var(--radius-none);
  background: var(--color-canvas);
}

.diagnostic-panel-head {
  display: flex;
  min-height: 92px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: var(--line-thin) solid var(--color-line);
  padding: 20px clamp(20px, 4vw, 34px);
}

.diagnostic-panel-code,
.diagnostic-source,
.diagnostic-note-index,
.diagnostic-step-code {
  font-family: var(--font-mono);
  letter-spacing: .07em;
}

.diagnostic-panel-code {
  margin-bottom: 5px;
  color: var(--color-accent-deep);
  font-size: 11px;
  font-weight: 700;
}

.diagnostic-status {
  margin: 0;
  color: var(--color-ink);
  font-size: 17px;
  font-weight: 750;
}

.diagnostic-result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
}

.diagnostic-result-cell {
  min-height: 144px;
  border-right: var(--line-thin) solid var(--color-line);
  border-bottom: var(--line-thin) solid var(--color-line);
  padding: 24px clamp(20px, 4vw, 34px);
}

.diagnostic-result-cell:nth-child(even) {
  border-right: 0;
}

.diagnostic-result-cell dt {
  margin-bottom: 14px;
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.diagnostic-result-cell dd {
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--color-ink);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 800;
  line-height: 1.3;
}

.diagnostic-result-primary dd {
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
}

.diagnostic-result-panel[data-state="error"] {
  border-top-color: var(--color-error);
}

.diagnostic-result-panel[data-state="error"] .diagnostic-status {
  color: var(--color-error);
}

.diagnostic-result-panel[data-state="ready"] .diagnostic-status {
  color: var(--color-success);
}

.diagnostic-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 24px clamp(20px, 4vw, 34px) 12px;
}

.diagnostic-actions .btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

.diagnostic-source {
  margin: 0;
  padding: 6px clamp(20px, 4vw, 34px) 24px;
  color: var(--color-ink-soft);
  font-size: 11px;
}

.diagnostic-noscript {
  margin-top: 24px;
}

.diagnostic-explain {
  background: var(--color-canvas);
}

.diagnostic-interpretation {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--line-thin) solid var(--color-line);
  border-left: var(--line-thin) solid var(--color-line);
}

.diagnostic-note {
  position: relative;
  min-height: 260px;
  border-right: var(--line-thin) solid var(--color-line);
  border-bottom: var(--line-thin) solid var(--color-line);
  padding: clamp(24px, 4vw, 38px);
}

.diagnostic-note::before {
  position: absolute;
  top: -1px;
  left: -1px;
  width: 52px;
  height: 5px;
  background: var(--color-accent);
  content: "";
}

.diagnostic-note-index {
  margin-bottom: 24px;
  color: var(--color-accent-deep);
  font-size: 11px;
  font-weight: 700;
}

.diagnostic-note h3 {
  font-size: 23px;
}

.diagnostic-note p:last-child {
  margin-bottom: 0;
  color: var(--color-ink-soft);
}

.diagnostic-dns {
  border-top: var(--line-thin) solid var(--color-line);
  border-bottom: var(--line-thin) solid var(--color-line);
  background: var(--color-panel);
}

.diagnostic-dns-grid {
  display: grid;
  grid-template-columns: minmax(260px, .72fr) minmax(0, 1.28fr);
  gap: clamp(34px, 7vw, 88px);
  align-items: start;
}

.diagnostic-dns-lead {
  color: var(--color-ink-soft);
  font-size: 17px;
}

.diagnostic-steps {
  border-top: var(--line-thin) solid var(--color-line);
  list-style: none;
}

.diagnostic-steps li {
  display: grid;
  grid-template-columns: 94px minmax(0, 1fr);
  gap: 24px;
  border-right: var(--line-thin) solid var(--color-line);
  border-bottom: var(--line-thin) solid var(--color-line);
  border-left: var(--line-thin) solid var(--color-line);
  background: var(--color-canvas);
  padding: 26px;
}

.diagnostic-step-code {
  align-self: start;
  background: var(--color-accent);
  padding: 7px 8px;
  color: var(--color-canvas);
  font-size: 10px;
  font-weight: 750;
  text-align: center;
}

.diagnostic-steps h3 {
  margin-bottom: 9px;
  font-size: 20px;
}

.diagnostic-steps p {
  margin-bottom: 0;
  color: var(--color-ink-soft);
}

.diagnostic-privacy {
  background: var(--color-canvas);
}

.copy-buffer {
  position: fixed;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 900px) {
  .diagnostic-hero-grid {
    min-height: 0;
    grid-template-columns: 1fr;
  }

  .diagnostic-intro {
    padding-right: 0;
  }

  .diagnostic-drawing {
    min-height: 340px;
    border-top: var(--line-thin) solid var(--color-line);
    border-left: 0;
  }

  .diagnostic-dns-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .diagnostic-intro {
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .diagnostic-drawing {
    min-height: 260px;
  }

  .diagnostic-result-grid,
  .diagnostic-interpretation {
    grid-template-columns: 1fr;
  }

  .diagnostic-result-cell,
  .diagnostic-result-cell:nth-child(even) {
    min-height: 124px;
    border-right: 0;
  }

  .diagnostic-panel-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .diagnostic-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .diagnostic-actions .btn {
    width: 100%;
  }

  .diagnostic-note {
    min-height: 0;
  }

  .diagnostic-steps li {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 22px;
  }

  .diagnostic-step-code {
    justify-self: start;
  }
}

@media (max-width: 390px) {
  .diagnostic-drawing {
    min-height: 220px;
  }

  .diagnostic-result-cell dd {
    font-size: 20px;
  }
}