html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

.manual-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
  background-image: radial-gradient(var(--color-dot) 1px, transparent 1px);
  background-size: 22px 22px;
  padding-top: 72px;
  padding-bottom: 72px;
}

.manual-hero-copy {
  max-width: 880px;
}

.manual-hero-copy .lede {
  margin-top: 20px;
}

.manual-hero-copy .button-row {
  margin-top: 28px;
}

.manual-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.manual-overview {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(260px, 0.6fr);
  gap: 18px;
  margin-top: 34px;
}

.manual-overview-main,
.manual-overview-side {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  padding: 28px;
}

.manual-overview-main p,
.manual-overview-side p {
  color: var(--color-muted);
}

.manual-overview-main p {
  margin-top: 12px;
}

.manual-overview-side {
  display: grid;
  align-content: start;
  gap: 18px;
}

.manual-fact {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 16px;
}

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

.manual-fact strong,
.manual-fact span {
  display: block;
}

.manual-fact span {
  margin-top: 3px;
  color: var(--color-muted);
  font-size: 13px;
}

.manual-toc {
  padding-top: 48px;
  padding-bottom: 48px;
}

.manual-toc h2 {
  margin-bottom: 20px;
  font-size: clamp(26px, 3vw, 36px);
}

.manual-toc .jump-nav {
  flex-wrap: wrap;
  overflow: visible;
}

.manual-article {
  padding-top: 24px;
  padding-bottom: var(--section-space);
}

.manual-chapter {
  scroll-margin-top: 28px;
  border-top: 1px solid var(--color-border);
  padding-top: 78px;
  padding-bottom: 78px;
}

.manual-chapter:first-child {
  border-top: 0;
}

.manual-chapter h2 {
  margin-top: 0;
}

.manual-chapter h3 {
  margin-top: 42px;
}

.chapter-index {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.chapter-intro {
  margin-top: 20px;
  color: var(--color-muted);
  font-size: 17px;
}

.manual-chapter .callout,
.manual-chapter .data-table-wrap,
.manual-chapter pre {
  margin-top: 26px;
  margin-bottom: 26px;
}

.manual-chapter .data-table-wrap + p,
.manual-chapter pre + p,
.manual-chapter .callout + p {
  margin-top: 20px;
}

.manual-chapter kbd {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  padding: 1px 7px;
  font-size: 0.92em;
}

.manual-checklist {
  display: grid;
  gap: 12px;
  margin-top: 24px;
  padding-left: 0;
  list-style: none;
}

.manual-checklist li {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  padding: 15px 18px 15px 44px;
}

.manual-checklist li::before {
  position: absolute;
  top: 17px;
  left: 18px;
  width: 14px;
  height: 14px;
  border: 2px solid var(--color-accent-deep);
  border-radius: 50%;
  content: "";
}

.flow-steps {
  display: grid;
  gap: 14px;
  margin-top: 26px;
  padding-left: 0;
  counter-reset: manual-step;
  list-style: none;
}

.flow-steps li {
  position: relative;
  min-width: 0;
  border-left: 1px solid var(--color-border);
  padding: 3px 0 22px 52px;
  counter-increment: manual-step;
}

.flow-steps li::before {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-text);
  content: counter(manual-step);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 650;
}

.flow-steps strong {
  display: block;
  margin-bottom: 5px;
}

.flow-steps span {
  color: var(--color-muted);
}

.parameter-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
}

.parameter-card {
  min-width: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  padding: 20px;
}

.parameter-card h4 {
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.parameter-card p {
  margin-top: 8px;
  color: var(--color-muted);
}

.manual-related {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  margin-top: 48px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  padding: 30px;
}

.manual-related p {
  margin-top: 8px;
  color: var(--color-muted);
}

.manual-link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.manual-link-list a {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  padding: 8px 15px;
  font-weight: 650;
}

.manual-link-list a:hover {
  border-color: var(--color-text);
}

@media (max-width: 760px) {
  .manual-overview,
  .parameter-grid,
  .manual-related {
    grid-template-columns: 1fr;
  }

  .manual-hero {
    padding-top: 52px;
    padding-bottom: 52px;
  }

  .manual-chapter {
    padding-top: 62px;
    padding-bottom: 62px;
  }

  .manual-toc .jump-nav {
    flex-wrap: wrap;
    overflow-x: visible;
  }

  .manual-toc .jump-nav a {
    min-width: 0;
    flex: 1 1 150px;
    white-space: normal;
  }
}

@media (max-width: 640px) {
  .manual-hero,
  .manual-toc,
  .manual-article {
    max-width: 100vw;
    overflow-x: clip;
  }

  .manual-meta .chip {
    min-width: 0;
    white-space: normal;
  }

  .manual-chapter {
    max-width: calc(100vw - var(--gutter) * 2);
  }

  .manual-chapter .data-table-wrap {
    width: 100%;
  }

  .manual-chapter .keyword-lock {
    white-space: normal;
  }

  .manual-hero .button-row .button {
    min-width: 0;
    flex-basis: 100%;
    overflow-wrap: anywhere;
  }

  .manual-overview-main,
  .manual-overview-side,
  .manual-related {
    padding: 22px;
  }

  .chapter-intro {
    font-size: 16px;
  }

  .flow-steps li {
    padding-left: 46px;
  }
}