.deep-document {
  padding-bottom: var(--section-space);
}

.doc-hero {
  position: relative;
  padding-top: clamp(72px, 9vw, 128px);
  padding-bottom: clamp(52px, 7vw, 92px);
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
  background-image:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px),
    var(--gradient-backdrop);
  background-size: 34px 34px, 34px 34px, auto;
}

.doc-hero::before,
.doc-hero::after {
  position: absolute;
  border-radius: var(--radius-pill);
  content: "";
  pointer-events: none;
}

.doc-hero::before {
  top: 48px;
  right: max(var(--gutter), calc((100vw - var(--page-width)) / 2));
  width: clamp(110px, 16vw, 220px);
  height: clamp(110px, 16vw, 220px);
  border: 1px solid var(--color-accent);
  box-shadow:
    inset 0 0 0 22px var(--color-accent-soft),
    inset 0 0 0 44px var(--color-panel);
  opacity: .72;
}

.doc-hero::after {
  right: clamp(30px, 10vw, 150px);
  bottom: -62px;
  width: 150px;
  height: 150px;
  background: var(--gradient-current);
  opacity: .14;
}

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

.doc-hero h1 {
  max-width: 690px;
  margin-top: 22px;
  margin-bottom: 20px;
}

.doc-hero .lead {
  max-width: 690px;
}

.doc-fact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 28px;
}

.doc-fact-line span {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  padding-inline: 13px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 760;
  box-shadow: var(--shadow-panel);
}

.doc-intro-note {
  max-width: 690px;
  margin-top: 30px;
  margin-bottom: 0;
}

.doc-intro-note a,
.doc-body a {
  color: var(--color-accent-dark);
  font-weight: 780;
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-underline-offset: .18em;
}

.doc-body {
  position: relative;
}

.doc-body .toc-tabs {
  top: 12px;
  z-index: 35;
  margin-top: 34px;
  margin-bottom: 0;
}

.doc-section {
  position: relative;
  padding-top: clamp(74px, 9vw, 112px);
  padding-bottom: clamp(54px, 7vw, 88px);
  border-bottom: 1px solid var(--color-border);
}

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

.doc-section h2 {
  margin-top: 10px;
}

.doc-section h3 {
  margin-top: 2.1em;
}

.doc-section p {
  text-align: justify;
  text-justify: inter-ideograph;
}

.chapter-mark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .11em;
}

.chapter-mark::before {
  width: 30px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--gradient-brand);
  content: "";
}

.doc-section .table-scroll {
  margin-block: 34px;
}

.doc-section pre {
  margin-block: 30px;
}

.topology-strip,
.scenario-matrix {
  display: grid;
  gap: 12px;
  margin-block: 34px;
}

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

.topology-item,
.scenario-matrix > div {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.topology-item {
  position: relative;
  padding-top: 38px;
}

.topology-item::before {
  position: absolute;
  top: 19px;
  right: 20px;
  left: 20px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--gradient-brand);
  content: "";
}

.topology-item strong,
.scenario-matrix strong {
  display: block;
  margin-bottom: 8px;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 830;
}

.topology-item span {
  display: block;
  margin-bottom: 12px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.7;
}

.topology-item p,
.scenario-matrix p {
  margin-bottom: 0;
  font-size: 14px;
  text-align: left;
}

.scenario-matrix {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.scenario-matrix > div:nth-child(2),
.scenario-matrix > div:nth-child(3) {
  background: var(--color-panel-soft);
}

.doc-section .verdict {
  margin-top: 38px;
}

@media (max-width: 768px) {
  .doc-hero {
    padding-top: 62px;
    padding-bottom: 62px;
    background-size: 26px 26px, 26px 26px, auto;
  }

  .doc-hero::before {
    display: none;
  }

  .doc-fact-line {
    align-items: stretch;
    flex-direction: column;
  }

  .doc-fact-line span {
    width: fit-content;
    max-width: 100%;
  }

  .doc-body .toc-tabs {
    top: 8px;
    margin-top: 24px;
  }

  .doc-section {
    padding-top: 72px;
    padding-bottom: 62px;
  }

  .doc-section p {
    text-align: left;
  }

  .topology-strip,
  .scenario-matrix {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 420px) {
  .doc-fact-line span {
    font-size: 10px;
  }

  .topology-item,
  .scenario-matrix > div {
    padding: 18px;
  }

  .topology-item {
    padding-top: 36px;
  }
}