:root {
  --deepdoc-hero-min: 520px;
  --deepdoc-sidebar: 220px;
  --deepdoc-layout-gap: 56px;
  --deepdoc-rule-width: 5px;
  --deepdoc-fact-index-size: 42px;
  --deepdoc-table-min: 680px;
}

.manual-hero {
  position: relative;
  overflow: hidden;
  padding-top: 88px;
  padding-bottom: 88px;
  border-radius: 0 0 var(--radius-hero) var(--radius-hero);
  background:
    radial-gradient(52% 90% at 92% 10%, var(--color-canvas-light), transparent 72%),
    var(--gradient-canvas);
  color: var(--color-text);
}

.manual-hero::after {
  position: absolute;
  right: -8%;
  bottom: -42%;
  width: 48%;
  aspect-ratio: 1;
  border-radius: 42% 58% 64% 36%;
  background: var(--gradient-accent);
  opacity: 0.18;
  content: "";
  transform: rotate(-12deg);
}

.manual-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: var(--deepdoc-hero-min);
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.75fr);
  gap: 72px;
  align-items: center;
}

.manual-hero__copy {
  max-width: 720px;
}

.manual-hero__sub {
  max-width: 680px;
  margin-bottom: 22px;
  color: var(--color-accent-dark);
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 750;
  line-height: 1.45;
}

.manual-hero__copy .lede a {
  color: var(--color-accent-dark);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.manual-hero__copy .badge-row {
  margin-top: 28px;
}

.manual-hero__facts {
  display: grid;
  gap: 18px;
}

.manual-fact {
  position: relative;
  display: grid;
  grid-template-columns: var(--deepdoc-fact-index-size) minmax(0, 1fr);
  gap: 4px 16px;
  padding: 22px;
  border: 1px solid var(--color-strip-stroke);
  border-radius: var(--radius-card);
  background: var(--color-glass);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px);
}

.manual-fact:nth-child(2) {
  transform: translateX(-24px);
}

.manual-fact__index {
  display: grid;
  width: var(--deepdoc-fact-index-size);
  height: var(--deepdoc-fact-index-size);
  grid-row: 1 / span 2;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--color-text);
  color: var(--color-on-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.manual-fact strong {
  align-self: end;
  font-family: var(--font-display);
  line-height: 1.35;
}

.manual-fact p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.6;
}

.manual-layout {
  display: grid;
  min-height: 3600px;
  grid-template-columns: var(--deepdoc-sidebar) minmax(0, 1fr);
  gap: var(--deepdoc-layout-gap);
  align-items: start;
}

.manual-layout > .toc {
  display: grid;
  top: calc(var(--header-height) + 20px);
  gap: 5px;
  padding: 12px;
  border-radius: var(--radius-card);
  overflow-x: visible;
}

.manual-layout > .toc a {
  width: 100%;
  white-space: normal;
}

.manual-prose {
  width: 100%;
  max-width: var(--reading-width);
}

.manual-prose > section {
  position: relative;
  padding-bottom: 72px;
  scroll-margin-top: calc(var(--header-height) + 28px);
}

.manual-prose > section + section {
  padding-top: 18px;
  border-top: 1px solid var(--color-border);
}

.manual-prose > section > h2 {
  margin-top: 0;
}

.manual-prose h3 {
  position: relative;
  padding-left: 18px;
}

.manual-prose h3::before {
  position: absolute;
  top: 0.38em;
  bottom: 0.36em;
  left: 0;
  width: var(--deepdoc-rule-width);
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  content: "";
}

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

.manual-prose strong {
  color: var(--color-text);
}

.manual-prose .callout {
  margin-top: 30px;
  margin-bottom: 30px;
}

.manual-prose .data-table {
  max-width: 100%;
  margin-top: 30px;
  margin-bottom: 34px;
  overflow-x: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  -webkit-overflow-scrolling: touch;
}

.manual-prose .data-table table {
  min-width: var(--deepdoc-table-min);
  margin-bottom: 0;
}

.manual-prose pre {
  margin-top: 28px;
  margin-bottom: 30px;
  box-shadow: var(--shadow-float);
}

.manual-prose ol {
  padding-left: 1.5em;
}

.manual-prose .end-store-card {
  margin-top: 20px;
}

.manual-prose .end-store-card h2 {
  margin-top: 0;
}

@media (max-width: 1000px) {
  .manual-hero__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .manual-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .manual-fact,
  .manual-fact:nth-child(2) {
    grid-template-columns: 1fr;
    transform: none;
  }

  .manual-fact__index {
    grid-row: auto;
    margin-bottom: 10px;
  }

  .manual-layout {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .manual-layout > .toc {
    display: flex;
    overflow-x: auto;
    border-radius: var(--radius-pill);
  }

  .manual-layout > .toc a {
    width: auto;
    white-space: nowrap;
  }

  .manual-prose {
    max-width: 100%;
  }
}

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

  .manual-hero__inner {
    min-height: 0;
  }

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

  .manual-hero__facts {
    grid-template-columns: 1fr;
  }

  .manual-fact {
    grid-template-columns: var(--deepdoc-fact-index-size) minmax(0, 1fr);
  }

  .manual-fact__index {
    grid-row: 1 / span 2;
    margin-bottom: 0;
  }

  .manual-layout > .toc {
    top: calc(var(--header-height) + 8px);
  }

  .manual-prose > section {
    padding-bottom: 56px;
  }
}

@media (max-width: 480px) {
  .manual-hero {
    padding-top: 48px;
    padding-bottom: 52px;
  }

  .manual-fact {
    padding: 18px;
  }

  .manual-prose h3 {
    padding-left: 15px;
  }

  .manual-prose .end-store-card {
    padding: 24px;
  }
}