:root {
  --manual-board-size: 520px;
  --manual-route-width: 168px;
  --manual-prose-gap: 26px;
  --manual-hero-glow: var(--color-accent-tint);
  --manual-code-text: var(--color-teal);
}

.manual-hero {
  position: relative;
  overflow-x: clip;
  padding-top: 72px;
  padding-bottom: 72px;
  background-image:
    radial-gradient(circle at 18% 34%, var(--manual-hero-glow), transparent 28%),
    radial-gradient(var(--color-border) 1px, transparent 1px);
  background-size: auto, 24px 24px;
}

.manual-hero-grid {
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(420px, .92fr);
  align-items: center;
  gap: 64px;
}

.manual-hero-copy,
.manual-hero-board {
  min-width: 0;
}

.manual-hero-copy h1 {
  max-width: 690px;
}

.manual-hero-lead {
  max-width: 680px;
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 18px;
  line-height: 1.8;
}

.manual-hero-actions {
  margin-top: 28px;
  margin-bottom: 22px;
}

.manual-hero-board {
  position: relative;
  width: min(100%, var(--manual-board-size));
  aspect-ratio: 1;
  justify-self: end;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background-color: var(--color-panel-strong);
  background-image:
    linear-gradient(var(--color-line-muted) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-line-muted) 1px, transparent 1px);
  background-size: 42px 42px;
  box-shadow: var(--shadow-soft);
}

.manual-board-label {
  position: absolute;
  z-index: 3;
  top: 24px;
  left: 26px;
  color: var(--color-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .14em;
}

.manual-board-lines {
  position: absolute;
  z-index: 1;
  inset: 0;
  width: 100%;
  height: 100%;
}

.manual-board-lines path {
  fill: none;
  stroke: var(--color-teal);
  stroke-width: 2;
  stroke-dasharray: 5 8;
  opacity: .45;
}

.manual-board-lines circle {
  fill: var(--color-success);
  stroke: var(--color-white);
  stroke-width: 4;
}

.manual-board-core,
.manual-board-route {
  position: absolute;
  z-index: 2;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  box-shadow: var(--shadow-card);
}

.manual-board-core {
  top: 50%;
  left: 50%;
  width: 214px;
  padding: 24px;
  display: grid;
  justify-items: center;
  gap: 7px;
  transform: translate(-50%, -50%);
  border-radius: var(--radius-lg);
  text-align: center;
}

.manual-board-core strong {
  font-size: 16px;
}

.manual-board-core small {
  color: var(--color-muted);
  font-size: 12px;
}

.manual-core-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-pill);
  background: var(--color-success);
  box-shadow: 0 0 0 6px var(--color-panel-strong);
}

.manual-board-route {
  width: var(--manual-route-width);
  padding: 14px 16px;
  display: grid;
  gap: 2px;
  border-radius: var(--radius-md);
}

.manual-board-route span {
  color: var(--color-muted);
  font-size: 11px;
  font-weight: 750;
}

.manual-board-route b {
  font-size: 13px;
}

.route-a {
  top: 70px;
  left: 28px;
}

.route-b {
  top: 60px;
  right: 24px;
}

.route-c {
  right: 34px;
  bottom: 52px;
}

.manual-intro {
  padding-bottom: 36px;
}

.manual-intro a,
.manual-article a {
  color: var(--color-accent-dark);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.manual-article {
  position: relative;
}

.manual-chapter {
  padding-top: 78px;
  padding-bottom: 78px;
}

.manual-chapter-strong {
  background: var(--color-panel-strong);
}

.manual-chapter .reading-wrap {
  max-width: 900px;
}

.manual-chapter .prose {
  font-size: 17px;
  line-height: 1.9;
}

.manual-chapter .prose h2 {
  margin-top: 0;
  margin-bottom: 34px;
}

.manual-chapter .prose h3 {
  margin-top: 46px;
  margin-bottom: 15px;
  padding-left: 17px;
  border-left: 4px solid var(--color-teal);
  font-size: 24px;
}

.manual-chapter .prose p {
  margin-bottom: var(--manual-prose-gap);
}

.manual-chapter .callout p {
  margin-bottom: 0;
}

.manual-chapter pre {
  margin-top: 28px;
  margin-bottom: 30px;
  color: var(--manual-code-text);
  line-height: 1.7;
}

.manual-chapter .table-scroll {
  margin-top: 34px;
  margin-bottom: 36px;
  background: var(--color-panel);
}

.manual-chapter-strong .table-scroll,
.manual-chapter-strong .faq-item {
  background: var(--color-white);
}

.manual-chapter .comparison-table td {
  line-height: 1.65;
}

.manual-chapter .comparison-table th:first-child {
  min-width: 142px;
}

.manual-article > .flow-connector {
  height: 0;
  position: relative;
  z-index: 3;
}

.manual-article > .flow-connector::before {
  position: absolute;
  top: -22px;
}

.manual-article > .flow-connector .flow-medallion {
  position: absolute;
  top: -17px;
  margin: 0;
}

.manual-close {
  padding-top: 44px;
}

.manual-close .end-promo {
  margin-top: 0;
}

@media (max-width: 1080px) {
  .manual-hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(380px, .8fr);
    gap: 40px;
  }

  .manual-hero-board {
    --manual-board-size: 460px;
    --manual-route-width: 148px;
  }

  .manual-board-core {
    width: 190px;
  }
}

@media (max-width: 860px) {
  .manual-hero {
    padding-top: 56px;
  }

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

  .manual-hero-board {
    justify-self: center;
  }

  .manual-hero-copy {
    max-width: 720px;
  }
}

@media (max-width: 640px) {
  :root {
    --manual-prose-gap: 22px;
  }

  .manual-hero {
    padding-top: 42px;
    padding-bottom: 54px;
  }

  .manual-hero-grid {
    min-height: auto;
    gap: 42px;
  }

  .manual-hero-lead {
    font-size: 16px;
  }

  .manual-hero-board {
    --manual-route-width: 126px;
    width: 100%;
    max-width: 390px;
  }

  .manual-board-label {
    display: none;
  }

  .manual-board-core {
    width: 174px;
    padding: 18px 14px;
  }

  .manual-board-core strong {
    font-size: 14px;
  }

  .manual-board-route {
    padding: 10px 11px;
  }

  .manual-board-route b {
    font-size: 11px;
  }

  .route-a {
    top: 34px;
    left: 12px;
  }

  .route-b {
    top: 30px;
    right: 10px;
  }

  .route-c {
    right: 18px;
    bottom: 28px;
  }

  .manual-intro {
    padding-bottom: 22px;
  }

  .manual-chapter {
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .manual-chapter .prose {
    font-size: 16px;
    line-height: 1.82;
  }

  .manual-chapter .prose h3 {
    margin-top: 38px;
    padding-left: 13px;
    font-size: 21px;
  }

  .manual-chapter pre {
    padding: 16px;
    font-size: 13px;
  }

  .manual-close {
    padding-top: 24px;
  }
}

@media (max-width: 380px) {
  .manual-hero-board {
    --manual-route-width: 112px;
  }

  .manual-board-core {
    width: 156px;
    padding: 15px 10px;
  }

  .manual-board-core small {
    font-size: 10px;
  }

  .manual-board-route span {
    font-size: 10px;
  }

  .manual-board-route b {
    font-size: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .manual-board-core,
  .manual-board-route {
    transform-origin: center;
  }
}