.manual-hero {
  position: relative;
  overflow: hidden;
  color: var(--color-selection-text);
  background-color: var(--color-accent-dark);
  background-image:
    linear-gradient(
      var(--color-transparent) 0,
      var(--color-transparent) calc(100% - 3px),
      var(--color-accent) calc(100% - 3px)
    ),
    repeating-linear-gradient(
      90deg,
      var(--color-transparent) 0,
      var(--color-transparent) 31px,
      var(--color-accent) 32px
    );
  border-bottom: 5px solid var(--color-border);
}

.manual-hero::after {
  content: "YAML";
  position: absolute;
  right: -0.08em;
  bottom: -0.2em;
  z-index: 0;
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: clamp(120px, 27vw, 390px);
  font-weight: 900;
  line-height: 1;
  opacity: 0.48;
  pointer-events: none;
}

.manual-hero .wrap {
  position: relative;
  z-index: 1;
}

.manual-hero h1 {
  max-width: 900px;
  text-shadow:
    4px 4px 0 var(--color-shadow-deep),
    8px 8px 0 var(--color-border);
}

.manual-hero .lead {
  max-width: 780px;
  padding: 14px 16px;
  color: var(--color-text);
  background: var(--color-panel-soft);
  border-top: 3px solid var(--color-panel-bright);
  border-left: 3px solid var(--color-panel-bright);
  border-right: 3px solid var(--color-border);
  border-bottom: 3px solid var(--color-border);
  box-shadow: var(--hard-shadow-medium);
}

.manual-hero__actions {
  margin-top: 24px;
}

.manual-file-strip {
  display: flex;
  max-width: 900px;
  flex-wrap: wrap;
  gap: 3px;
  margin-top: 36px;
  padding: 5px;
  color: var(--color-text);
  background: var(--color-panel);
  border-top: 3px solid var(--color-panel-bright);
  border-left: 3px solid var(--color-panel-bright);
  border-right: 3px solid var(--color-border);
  border-bottom: 3px solid var(--color-border);
  box-shadow: var(--hard-shadow-small);
  font-family: var(--font-mono);
  font-size: 11px;
}

.manual-file-strip span {
  flex: 1 1 auto;
  padding: 5px 9px;
  background: var(--color-panel-soft);
  border: 1px dotted var(--color-panel-shadow);
  text-align: center;
}

.manual-intro {
  margin-bottom: 38px;
}

.manual-intro a {
  color: var(--color-accent-dark);
  font-weight: 900;
}

.manual-toc {
  margin-bottom: 0;
}

.manual-document {
  background: var(--color-paper);
  border-top: 4px double var(--color-border);
}

.manual-chapter {
  scroll-margin-top: calc(var(--header-height) + 20px);
}

.manual-chapter__marker {
  display: inline-block;
  margin-bottom: 14px;
  padding: 5px 9px;
  color: var(--color-selection-text);
  background: var(--color-accent-dark);
  border-right: 3px solid var(--color-border);
  border-bottom: 3px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

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

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

.manual-chapter .prose > h3::before {
  content: "";
  position: absolute;
  top: 0.25em;
  bottom: 0.2em;
  left: 0;
  width: 7px;
  background: var(--color-accent);
  border-right: 2px solid var(--color-accent-dark);
}

.manual-chapter .prose > p {
  text-align: justify;
  text-justify: inter-ideograph;
}

.manual-chapter .data-table {
  font-size: 14px;
}

.manual-chapter .download-cta h2 {
  padding-bottom: 0;
  border-bottom: 0;
}

@media (max-width: 640px) {
  .manual-hero::after {
    right: -0.15em;
    bottom: -0.08em;
    font-size: 160px;
  }

  .manual-hero h1 {
    text-shadow:
      3px 3px 0 var(--color-shadow-deep),
      5px 5px 0 var(--color-border);
  }

  .manual-file-strip {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .manual-chapter .prose > p {
    text-align: left;
  }

  .manual-chapter .data-table {
    font-size: 13px;
  }
}