.manual-hero {
  position: relative;
  overflow: clip;
  border-bottom: 1px solid var(--color-hairline);
}

.manual-hero::before {
  position: absolute;
  top: 8%;
  left: 58%;
  width: min(42vw, 620px);
  aspect-ratio: 1;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, var(--color-accent-glow), transparent 68%);
  content: "";
  pointer-events: none;
}

.manual-hero__inner {
  position: relative;
  display: grid;
  min-height: min(780px, calc(100svh - var(--header-height)));
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
  gap: clamp(36px, 7vw, 100px);
  align-items: center;
  padding-top: clamp(68px, 9vw, 118px);
  padding-bottom: clamp(68px, 9vw, 118px);
}

.manual-hero__copy {
  position: relative;
  z-index: 2;
  min-width: 0;
  max-width: 700px;
}

.manual-hero__copy .eyebrow {
  margin-bottom: 26px;
}

.manual-hero__copy h1 {
  max-width: 680px;
}

.manual-hero__lede {
  max-width: 650px;
  margin-bottom: 30px;
  color: var(--color-muted);
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.8;
}

.manual-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 30px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--color-hairline);
  color: var(--color-muted);
  list-style: none;
}

.manual-facts li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.manual-facts li::before {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.manual-hero__archive {
  position: relative;
  display: grid;
  min-width: 0;
  place-items: center;
}

.manual-hero__archive svg {
  width: min(100%, 540px);
  filter: drop-shadow(0 24px 44px var(--color-shadow));
}

.archive-halo {
  fill: var(--color-panel);
  opacity: .74;
}

.archive-ring {
  fill: none;
  stroke: var(--color-ring);
  stroke-width: 1;
}

.archive-ring--outer {
  stroke-dasharray: 3 10;
}

.archive-ring--inner {
  stroke: var(--color-accent-dark);
  opacity: .66;
}

.archive-route {
  fill: none;
  stroke: var(--color-accent);
  stroke-linecap: round;
  stroke-width: 2;
  opacity: .72;
}

.archive-route--soft {
  stroke: var(--color-ring);
  stroke-dasharray: 6 9;
}

.archive-node {
  fill: var(--color-accent);
  stroke: var(--color-bg);
  stroke-width: 5;
}

.archive-core {
  fill: var(--color-accent);
  filter: drop-shadow(0 0 22px var(--color-accent-glow-strong));
}

.archive-shield,
.archive-check {
  fill: none;
  stroke: var(--color-bg);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 5;
}

.archive-label {
  position: absolute;
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 5px 13px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel-translucent);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.archive-label--top {
  top: 4%;
  left: 18%;
}

.archive-label--right {
  top: 43%;
  right: -2%;
}

.archive-label--bottom {
  right: 15%;
  bottom: 6%;
}

.manual-intro {
  padding-top: clamp(54px, 7vw, 88px);
  padding-bottom: clamp(46px, 6vw, 72px);
  border-bottom: 1px solid var(--color-hairline);
}

.manual-intro p {
  color: var(--color-muted);
  font-size: 18px;
}

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

.guide-layout {
  position: relative;
  display: grid;
  grid-template-columns: 190px minmax(0, var(--reading-width));
  gap: clamp(34px, 6vw, 86px);
  justify-content: center;
  align-items: start;
  padding-top: clamp(58px, 8vw, 104px);
  padding-bottom: var(--section-space);
}

.manual-toc {
  top: calc(var(--header-height) + 16px);
  display: grid;
  border-radius: var(--radius-lg);
}

.manual-toc a {
  width: 100%;
}

.manual-prose {
  min-width: 0;
}

.doc-section {
  min-width: 0;
  padding-top: 22px;
  padding-bottom: clamp(72px, 9vw, 116px);
  border-bottom: 1px solid var(--color-hairline);
}

.doc-section:first-child {
  padding-top: 0;
}

.doc-section:last-of-type {
  border-bottom: 0;
}

.doc-section h2 {
  max-width: 760px;
  margin-bottom: 34px;
}

.doc-section h3 {
  margin-top: 40px;
  font-size: clamp(23px, 2.3vw, 30px);
}

.doc-section p {
  margin-bottom: 1.35em;
}

.chapter-mark,
.decision-card__label {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
}

.decision-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 38px 0;
}

.decision-card {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: 0 16px 42px var(--color-shadow);
}

.decision-card h3 {
  margin-top: 0;
  font-size: 23px;
}

.decision-card p {
  margin-bottom: 0;
  font-size: 15px;
}

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

  .manual-hero__copy {
    max-width: 760px;
  }

  .manual-hero__archive {
    width: min(620px, 100%);
    margin-inline: auto;
  }

  .guide-layout {
    grid-template-columns: 1fr;
  }

  .manual-toc {
    top: 12px;
    display: flex;
    width: 100%;
    border-radius: var(--radius-md);
  }

  .manual-toc a {
    width: auto;
  }
}

@media (max-width: 768px) {
  .manual-hero::before {
    top: 44%;
    left: 10%;
    width: 90vw;
  }

  .manual-hero__inner {
    gap: 42px;
    padding: 50px 24px 62px;
  }

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

  .manual-hero__archive {
    width: min(520px, 100%);
  }

  .archive-label {
    display: none;
  }

  .manual-intro p {
    font-size: 16px;
  }

  .decision-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .manual-facts {
    align-items: flex-start;
    flex-direction: column;
  }

  .guide-layout {
    gap: 42px;
  }

  .doc-section {
    padding-bottom: 76px;
  }

  .doc-section h2 {
    margin-bottom: 28px;
  }

  .doc-section h3 {
    margin-top: 34px;
  }

  .decision-card {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .manual-hero__archive,
  .manual-hero__archive svg {
    transform: none;
  }
}