.diagnostic-hero {
  padding-top: clamp(64px, 9vw, 112px);
  padding-bottom: clamp(46px, 7vw, 82px);
  border-bottom: var(--border-hairline) solid var(--color-border);
  position: relative;
  overflow-x: clip;
  background:
    linear-gradient(90deg, var(--color-transparent), var(--color-accent-soft), var(--color-transparent)),
    var(--color-panel-glass);
}

.diagnostic-hero::before,
.diagnostic-hero::after {
  content: "";
  width: 22vw;
  max-width: 310px;
  height: 1px;
  position: absolute;
  top: 48%;
  background: var(--color-accent);
}

.diagnostic-hero::before {
  left: 0;
}

.diagnostic-hero::after {
  right: 0;
}

.diagnostic-hero .reading-wrap {
  position: relative;
  z-index: 2;
  text-align: center;
}

.diagnostic-hero .eyebrow {
  margin-bottom: 18px;
}

.diagnostic-hero h1 {
  max-width: 800px;
  margin-inline: auto;
}

.diagnostic-hero .lead {
  margin-inline: auto;
}

.diagnostic-facts {
  margin-top: 26px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 9px;
}

.manual-relation {
  max-width: var(--reading-width);
  margin: 34px auto 0;
  padding: 20px 22px;
  border: var(--border-hairline) dashed var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  background: var(--color-bg);
  text-align: left;
}

.manual-relation p {
  margin: 0;
}

.manual-relation a,
.diagnostic-prose a {
  color: var(--color-accent-dark);
  font-weight: 720;
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-underline-offset: 4px;
}

.diagnostic-layout {
  padding-top: clamp(34px, 5vw, 64px);
  padding-bottom: var(--section-space);
}

.diagnostic-layout > .toc-tabs {
  width: min(100%, var(--reading-width));
  margin-inline: auto;
}

.diagnostic-prose {
  width: 100%;
  max-width: var(--reading-width);
  margin-inline: auto;
}

.manual-section {
  padding-top: clamp(72px, 9vw, 112px);
  padding-bottom: clamp(28px, 5vw, 54px);
  border-bottom: var(--border-hairline) dashed var(--color-border);
}

.manual-section:last-child {
  border-bottom: 0;
}

.chapter-code {
  margin-bottom: 12px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.09em;
}

.diagnostic-prose h2 {
  font-size: clamp(31px, 4vw, 46px);
}

.diagnostic-prose h3 {
  margin-top: 38px;
  padding-top: 18px;
  border-top: var(--border-hairline) solid var(--color-border);
  font-size: clamp(21px, 2.6vw, 27px);
}

.diagnostic-prose p,
.diagnostic-prose li,
.diagnostic-prose dd {
  color: var(--color-text-muted);
}

.diagnostic-prose strong,
.diagnostic-prose dt {
  color: var(--color-text);
}

.code-group {
  margin: 28px 0;
  display: grid;
  gap: 14px;
}

.code-group > div {
  min-width: 0;
}

.code-label {
  margin-bottom: 7px;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.code-group pre {
  margin-bottom: 0;
}

.diagnostic-prose .table-scroll {
  margin: 30px 0;
}

.ticket-checklist {
  margin-top: 34px;
  padding: clamp(20px, 4vw, 32px);
  border: var(--border-hairline) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.ticket-checklist h3 {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.ticket-checklist dl {
  margin: 0;
  display: grid;
  gap: 0;
}

.ticket-checklist dl > div {
  padding: 16px 0;
  border-top: var(--border-hairline) dashed var(--color-border);
  display: grid;
  grid-template-columns: minmax(80px, 0.24fr) minmax(0, 1fr);
  gap: 18px;
}

.ticket-checklist dt {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.ticket-checklist dd {
  margin: 0;
}

@media (max-width: 900px) {
  .diagnostic-hero::before,
  .diagnostic-hero::after {
    display: none;
  }

  .manual-section {
    padding-top: 64px;
  }
}

@media (max-width: 640px) {
  .diagnostic-hero {
    padding-top: 48px;
    padding-bottom: 42px;
  }

  .diagnostic-hero h1 {
    font-size: clamp(34px, 10vw, 40px);
  }

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

  .diagnostic-facts .badge {
    width: 100%;
    justify-content: center;
  }

  .manual-relation {
    padding: 17px;
  }

  .diagnostic-layout {
    padding-top: 24px;
  }

  .manual-section {
    padding-top: 56px;
  }

  .diagnostic-prose h2 {
    font-size: 30px;
  }

  .diagnostic-prose h3 {
    margin-top: 32px;
    font-size: 22px;
  }

  .ticket-checklist dl > div {
    grid-template-columns: 1fr;
    gap: 5px;
  }
}