.manual-hero {
  position: relative;
  padding-top: clamp(58px, 8vw, 104px);
  padding-bottom: clamp(46px, 7vw, 86px);
  overflow: hidden;
}

.manual-hero::before {
  position: absolute;
  top: 8%;
  right: -8%;
  width: min(48vw, 620px);
  aspect-ratio: 1;
  content: "";
  pointer-events: none;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, var(--color-yellow-soft), transparent 24%),
    radial-gradient(circle at center, var(--color-blue-soft), transparent 62%);
  opacity: 0.8;
}

.manual-hero::after {
  position: absolute;
  right: 4%;
  bottom: 10%;
  width: min(42vw, 540px);
  height: 44%;
  content: "";
  pointer-events: none;
  border-radius: var(--radius-xl);
  background-image:
    linear-gradient(var(--color-map-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-map-grid) 1px, transparent 1px);
  background-size: 28px 28px;
  transform: perspective(540px) rotateX(58deg) rotateZ(-8deg);
  transform-origin: bottom right;
  opacity: 0.75;
}

.manual-hero .reading-wrap {
  position: relative;
  z-index: 2;
}

.manual-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  color: var(--color-text-muted);
  font-size: 13px;
}

.manual-breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.manual-breadcrumb a:hover {
  color: var(--color-accent-dark);
}

.manual-hero h1 {
  max-width: 850px;
  margin-top: 18px;
  font-size: clamp(43px, 6vw, 68px);
}

.manual-lead {
  max-width: 760px;
  margin-bottom: 26px;
  color: var(--color-text-muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.85;
}

.manual-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
}

.manual-fact-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 34px;
}

.manual-fact-strip span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  max-width: 100%;
  padding: 0 13px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  color: var(--color-accent-dark);
  background: var(--color-white-soft);
  box-shadow: var(--shadow-button);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.manual-shell {
  position: relative;
  padding-bottom: var(--section-space);
}

.manual-shell > .toc-tabs {
  max-width: var(--reading-width);
  margin-right: auto;
  margin-left: auto;
}

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

.manual-intro {
  margin-bottom: 30px;
  padding: clamp(24px, 4vw, 38px);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
  color: var(--color-text-muted);
  font-size: 17px;
}

.manual-intro > :last-child {
  margin-bottom: 0;
}

.manual-chapter {
  position: relative;
  margin-top: 30px;
  padding: clamp(27px, 5vw, 50px);
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--color-white-strong);
  box-shadow: var(--shadow-card);
}

.manual-chapter::before {
  position: absolute;
  top: 0;
  left: clamp(27px, 5vw, 50px);
  width: 84px;
  height: 5px;
  content: "";
  border-radius: 0 0 var(--radius-pill) var(--radius-pill);
  background: var(--color-accent);
}

.manual-chapter:nth-of-type(even)::before {
  background: var(--color-warn);
}

.chapter-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: 16px;
  padding: 0 11px;
  border-radius: var(--radius-pill);
  color: var(--color-accent-dark);
  background: var(--color-panel-blue);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.06em;
}

.manual-chapter h2 {
  margin-bottom: 30px;
  font-size: clamp(31px, 4.5vw, 44px);
}

.manual-chapter h3 {
  position: relative;
  margin-top: 42px;
  padding-left: 18px;
  font-size: clamp(21px, 2.8vw, 27px);
}

.manual-chapter h3::before {
  position: absolute;
  top: 0.12em;
  bottom: 0.12em;
  left: 0;
  width: 5px;
  content: "";
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.manual-chapter p,
.manual-chapter li {
  color: var(--color-text);
  line-height: 1.9;
}

.manual-chapter p {
  margin-bottom: 1.35em;
}

.manual-chapter a {
  font-weight: 650;
}

.manual-chapter .callout {
  margin-top: 34px;
  margin-bottom: 34px;
}

.manual-chapter pre {
  margin-top: 23px;
  margin-bottom: 25px;
}

.manual-chapter pre code {
  color: var(--color-panel);
}

.manual-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}

.manual-table th,
.manual-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.manual-table th {
  color: var(--color-text);
  background: var(--color-panel-soft);
  font-size: 13px;
  font-weight: 760;
}

.manual-table td {
  color: var(--color-text-muted);
  font-size: 14px;
}

.manual-table tbody tr:last-child td {
  border-bottom: 0;
}

.manual-finish {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 30px;
  margin-top: 34px;
  padding: clamp(28px, 5vw, 48px);
  overflow: hidden;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 92% 12%, var(--color-yellow-soft), transparent 31%),
    var(--color-accent-dark);
  box-shadow: var(--shadow-panel);
}

.manual-finish h2 {
  margin-top: 16px;
  margin-bottom: 12px;
  color: var(--color-panel);
  font-size: clamp(28px, 4vw, 39px);
}

.manual-finish p {
  max-width: 590px;
  margin-bottom: 0;
  color: var(--color-white-soft);
}

.manual-finish-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.manual-finish .button-primary {
  color: var(--color-text);
  background: var(--color-warn);
  box-shadow: var(--shadow-connect);
}

.manual-finish .button-primary:hover {
  color: var(--color-text);
  background: var(--color-panel);
}

.manual-finish .button-secondary {
  color: var(--color-panel);
  background: var(--color-blue-medium);
}

.manual-finish .button-secondary:hover {
  color: var(--color-panel);
  background: var(--color-accent);
}

@media (max-width: 760px) {
  .manual-hero::before {
    top: 18%;
    right: -42%;
    width: 92vw;
  }

  .manual-hero::after {
    right: -22%;
    width: 86vw;
    opacity: 0.55;
  }

  .manual-hero h1 {
    font-size: clamp(39px, 11.5vw, 50px);
  }

  .manual-shell > .toc-tabs {
    max-width: 100%;
  }

  .manual-chapter {
    border-radius: var(--radius-lg);
  }

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

  .manual-finish-actions {
    width: 100%;
  }

  .manual-finish-actions .button {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .manual-hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .manual-hero-actions .button {
    width: 100%;
  }

  .manual-fact-strip {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .manual-fact-strip span {
    justify-content: center;
  }

  .manual-chapter {
    padding: 25px 19px 29px;
  }

  .manual-chapter::before {
    left: 19px;
  }

  .manual-chapter h2 {
    font-size: clamp(29px, 9vw, 36px);
  }

  .manual-chapter h3 {
    margin-top: 36px;
  }
}