.manual-hero {
  position: relative;
  padding-top: clamp(72px, 9vw, 118px);
  padding-bottom: clamp(66px, 8vw, 104px);
  overflow: clip;
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px),
    var(--color-page);
  background-size: 48px 48px;
  isolation: isolate;
}

.manual-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -210px;
  left: 5%;
  width: min(720px, 86vw);
  height: 610px;
  background: radial-gradient(closest-side, var(--color-glow), transparent 72%);
  pointer-events: none;
}

.manual-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: 8%;
  bottom: -170px;
  width: min(520px, 70vw);
  height: 360px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  opacity: 0.55;
  transform: rotate(-8deg);
  pointer-events: none;
}

.manual-hero__badge {
  display: inline-flex;
  max-width: 100%;
  min-height: 34px;
  align-items: center;
  gap: 9px;
  margin-bottom: 20px;
  padding: 6px 13px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text-muted);
  box-shadow: var(--shadow-tile);
  font: 11px/1.4 var(--font-mono);
  letter-spacing: 0.05em;
}

.manual-hero h1 {
  max-width: 760px;
  margin-bottom: 18px;
}

.manual-hero__lead {
  max-width: 740px;
  margin-bottom: 28px;
  color: var(--color-text-muted);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.75;
}

.manual-facts {
  display: flex;
  max-width: 100%;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 32px;
}

.manual-facts span {
  display: inline-flex;
  max-width: 100%;
  min-height: 32px;
  align-items: center;
  padding: 5px 11px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text-muted);
  font: 12px/1.5 var(--font-mono);
}

.manual-layout {
  padding-top: clamp(48px, 7vw, 82px);
  padding-bottom: clamp(36px, 6vw, 70px);
}

.manual-layout > .jump-nav {
  margin-inline: auto;
}

.manual-article {
  color: var(--color-text-muted);
}

.manual-chapter {
  scroll-margin-top: 34px;
  padding-top: clamp(36px, 6vw, 68px);
  padding-bottom: clamp(52px, 7vw, 82px);
  border-bottom: 1px solid var(--color-border);
}

.manual-chapter:first-child {
  padding-top: 18px;
}

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

.manual-chapter h2 {
  margin-bottom: 28px;
}

.manual-chapter h3 {
  margin-top: 2.5rem;
}

.manual-chapter p {
  line-height: 1.9;
}

.manual-chapter .table-scroll,
.manual-chapter pre {
  margin-top: 28px;
  margin-bottom: 30px;
}

.manual-chapter .data-table {
  min-width: 720px;
}

.manual-chapter .data-table td:first-child {
  color: var(--color-text);
  font-weight: 680;
}

.manual-chapter pre {
  box-shadow: var(--shadow-card);
}

.manual-chapter .callout {
  line-height: 1.8;
}

@media (max-width: 768px) {
  .manual-hero {
    padding-top: 58px;
    padding-bottom: 64px;
  }

  .manual-hero__lead {
    font-size: 17px;
  }

  .manual-facts {
    justify-content: flex-start;
  }

  .manual-chapter {
    scroll-margin-top: 20px;
    padding-top: 32px;
    padding-bottom: 56px;
  }

  .manual-chapter h3 {
    margin-top: 2.1rem;
  }

  .manual-chapter p {
    line-height: 1.82;
  }
}

@media (max-width: 420px) {
  .manual-hero__badge {
    align-items: flex-start;
    white-space: normal;
  }

  .manual-facts span {
    flex: 1 1 130px;
    justify-content: center;
  }
}