.deepdoc-hero {
  position: relative;
  min-height: 690px;
  display: flex;
  align-items: center;
  padding-top: clamp(72px, 9vw, 116px);
  padding-bottom: clamp(76px, 10vw, 124px);
  overflow-x: clip;
  background:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px),
    var(--color-bg);
  background-size: 72px 72px;
}

.deepdoc-hero::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  background: linear-gradient(90deg, var(--color-bg), var(--color-ribbon-fade));
}

.deepdoc-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(440px, 1.08fr);
  align-items: center;
  gap: clamp(38px, 6vw, 82px);
}

.deepdoc-hero-copy {
  min-width: 0;
}

.deepdoc-hero-copy h1 {
  max-width: 650px;
  margin-top: 22px;
  margin-bottom: 22px;
}

.deepdoc-lead {
  max-width: 630px;
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.8;
}

.deepdoc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.deepdoc-topology {
  position: relative;
  min-width: 0;
  min-height: 500px;
}

.topology-ribbon {
  position: absolute;
  top: 72px;
  right: -190px;
  width: 720px;
  height: 214px;
  border-radius: 46% 14% 44% 20%;
  background: var(--gradient-ribbon);
  box-shadow: 0 36px 82px var(--color-accent-glow);
  opacity: 0.92;
  transform: rotate(22deg) skewX(-12deg);
}

.topology-ribbon::after {
  position: absolute;
  inset: 22px 0 auto 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  content: "";
  background: var(--gradient-ribbon-highlight);
  opacity: 0.58;
}

.topology-sheet {
  position: absolute;
  z-index: 2;
  top: 28px;
  left: 50%;
  width: min(570px, 96%);
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-card-deep);
  transform: translateX(-50%) rotate(-1deg);
}

.topology-chrome {
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding-inline: 22px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel-soft);
}

.topology-label {
  margin-left: auto;
  color: var(--color-text-muted);
  font: 650 10px var(--font-mono);
  letter-spacing: 0.1em;
}

.topology-map {
  width: 100%;
  display: block;
  padding: 24px;
}

.topology-grid-line {
  stroke: var(--color-border);
  stroke-width: 1;
}

.topology-path,
.topology-branch {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.topology-path-base {
  stroke: var(--color-border-strong);
  stroke-width: 8;
  opacity: 0.58;
}

.topology-path-live {
  stroke: var(--color-success);
  stroke-width: 4;
}

.topology-branch {
  stroke: var(--color-accent);
  stroke-width: 3;
  stroke-dasharray: 7 8;
}

.topology-node {
  fill: var(--color-panel);
  stroke: var(--color-success);
  stroke-width: 5;
}

.topology-node-end {
  stroke: var(--color-accent);
}

.topology-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  padding: 0 28px 28px;
  color: var(--color-text-muted);
  font: 650 11px var(--font-mono);
}

.topology-legend span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.legend-dot {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
}

.legend-dot-start,
.legend-dot-relay {
  background: var(--color-success);
}

.legend-dot-end {
  background: var(--color-accent);
}

.deepdoc-article {
  position: relative;
  padding-top: 48px;
  padding-bottom: var(--section-space);
}

.deepdoc-intro {
  max-width: 980px;
  margin: 0 auto 36px;
  color: var(--color-text-muted);
  font-size: 17px;
}

.deepdoc-intro p:last-child {
  margin-bottom: 0;
}

.deepdoc-intro a,
.deepdoc-prose a {
  color: var(--color-accent-dark);
  font-weight: 750;
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-underline-offset: 4px;
}

.deepdoc-article > .toc-tabs {
  width: fit-content;
  margin-right: auto;
  margin-left: auto;
}

.deepdoc-section {
  width: min(100%, 1080px);
  margin-inline: auto;
  padding-top: clamp(68px, 8vw, 104px);
  padding-bottom: clamp(68px, 8vw, 104px);
  border-bottom: 1px solid var(--color-border);
}

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

.deepdoc-section .section-heading {
  max-width: 850px;
}

.deepdoc-prose {
  max-width: 940px;
  color: var(--color-text-muted);
  font-size: 17px;
  line-height: 1.95;
}

.deepdoc-prose h3 {
  margin-top: 42px;
  margin-bottom: 16px;
  color: var(--color-text);
}

.deepdoc-prose h3:first-child {
  margin-top: 0;
}

.deepdoc-prose p {
  margin-bottom: 1.35em;
}

.deepdoc-prose .table-scroll {
  margin-top: 34px;
  margin-bottom: 34px;
  box-shadow: 0 16px 48px var(--color-shadow);
}

.deepdoc-prose .callout {
  margin-top: 34px;
  margin-bottom: 0;
}

.deepdoc-check {
  margin-top: 38px;
  margin-bottom: 30px;
}

.deepdoc-check h3 {
  margin-top: 0;
}

.deepdoc-check .check-list {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.deepdoc-check .check-list li {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.deepdoc-check .check-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.deepdoc-prose .verdict {
  margin-top: 30px;
  margin-bottom: 0;
  color: var(--color-text-muted);
}

@media (max-width: 1040px) {
  .deepdoc-hero-grid {
    grid-template-columns: 1fr;
  }

  .deepdoc-hero-copy {
    max-width: 760px;
  }

  .deepdoc-topology {
    width: min(700px, 100%);
    min-height: 480px;
    margin-inline: auto;
  }
}

@media (max-width: 768px) {
  .deepdoc-hero {
    min-height: auto;
    padding-top: 64px;
    padding-bottom: 72px;
  }

  .deepdoc-hero-grid {
    gap: 42px;
  }

  .deepdoc-lead,
  .deepdoc-intro,
  .deepdoc-prose {
    font-size: 16px;
  }

  .deepdoc-topology {
    min-height: 390px;
  }

  .topology-sheet {
    top: 12px;
    width: min(560px, calc(100% - 8px));
    border-radius: var(--radius-lg);
    transform: translateX(-50%);
  }

  .topology-ribbon {
    top: 60px;
    right: -270px;
  }

  .topology-map {
    padding: 14px;
  }

  .topology-legend {
    gap: 12px;
    padding: 0 18px 20px;
  }

  .deepdoc-article {
    padding-top: 30px;
  }

  .deepdoc-section {
    padding-top: 68px;
    padding-bottom: 68px;
  }

  .deepdoc-prose h3 {
    margin-top: 34px;
  }
}

@media (max-width: 480px) {
  .deepdoc-actions .button {
    width: 100%;
  }

  .deepdoc-topology {
    min-height: 310px;
  }

  .topology-chrome {
    min-height: 46px;
    padding-inline: 16px;
  }

  .topology-map {
    padding: 8px 10px;
  }

  .topology-legend {
    font-size: 9px;
  }

  .deepdoc-intro {
    padding: 22px;
  }

  .deepdoc-section .section-heading {
    margin-bottom: 34px;
  }

  .deepdoc-prose {
    line-height: 1.88;
  }
}