.deepdoc-article {
  padding-top: 14px;
}

.deepdoc-hero-panel {
  position: relative;
  display: grid;
  min-height: 500px;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  align-items: center;
  gap: clamp(28px, 5vw, 70px);
  overflow: hidden;
  padding: clamp(32px, 5vw, 68px);
  border-radius: var(--radius-hero);
  background: var(--color-ink-panel);
}

.deepdoc-hero-panel::before {
  position: absolute;
  top: -38%;
  right: -10%;
  width: 58%;
  aspect-ratio: 1;
  border-radius: var(--radius-pill);
  background: radial-gradient(closest-side, var(--color-accent-soft), transparent);
  content: "";
  pointer-events: none;
}

.deepdoc-hero-copy {
  position: relative;
  z-index: 2;
}

.deepdoc-hero-copy .badge {
  border-color: var(--color-dark-line-strong);
  background: transparent;
  color: var(--color-dark-subtle);
}

.deepdoc-hero-copy h1 {
  max-width: 680px;
  margin-top: 22px;
  color: var(--color-white);
}

.deepdoc-lead {
  max-width: 650px;
  margin-bottom: 28px;
  color: var(--color-dark-subtle);
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.75;
}

.deepdoc-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.deepdoc-facts span {
  display: grid;
  gap: 2px;
  padding: 12px;
  border: var(--line) solid var(--color-dark-line);
  border-radius: var(--radius-sm);
  background: var(--color-dark-card);
}

.deepdoc-facts strong {
  color: var(--color-dark-text);
  font-family: var(--font-mono);
  font-size: 13px;
}

.deepdoc-facts small {
  color: var(--color-dark-muted);
  font-size: 11px;
}

.deepdoc-route-figure {
  position: relative;
  z-index: 1;
  overflow: hidden;
  border: var(--line) solid var(--color-dark-line-strong);
  border-radius: var(--radius-lg);
  background: var(--color-dark-card);
}

.route-figure-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 13px 16px;
  border-bottom: var(--line) solid var(--color-dark-line);
  color: var(--color-dark-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .08em;
}

.deepdoc-route-figure svg {
  width: 100%;
  padding: 12px;
}

.route-grid {
  fill: none;
  stroke: var(--color-dark-line);
  stroke-width: 1;
}

.route-path {
  fill: none;
  stroke-linecap: round;
  stroke-width: 4;
}

.route-path-a {
  stroke: var(--color-accent);
}

.route-path-b {
  stroke: var(--color-accent-deep);
  stroke-dasharray: 8 10;
}

.route-node {
  fill: var(--color-accent);
  stroke: var(--color-dark-text);
  stroke-width: 3;
}

.route-node-warn {
  fill: var(--color-warning);
}

.route-figure-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  padding: 0 16px 16px;
  color: var(--color-dark-muted);
  font-size: 11px;
}

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

.route-figure-legend i {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.route-figure-legend span:nth-child(2) i {
  background: var(--color-accent-deep);
}

.route-figure-legend span:nth-child(3) i {
  background: var(--color-warning);
}

.deepdoc-flow {
  padding-top: 28px;
}

.deepdoc-flow > .toc-tabs {
  margin-bottom: 44px;
}

.deepdoc-intro,
.deepdoc-section {
  width: 100%;
  max-width: var(--reading-width);
  margin-inline: auto;
}

.deepdoc-intro {
  padding-bottom: clamp(42px, 6vw, 72px);
  color: var(--color-muted);
  font-size: 17px;
}

.deepdoc-section {
  padding-top: clamp(44px, 6vw, 74px);
  padding-bottom: clamp(44px, 6vw, 74px);
  border-top: var(--line) solid var(--color-border);
}

.deepdoc-section h2 {
  max-width: 760px;
}

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

.deepdoc-section p,
.deepdoc-section li {
  font-size: 16px;
  line-height: 1.9;
}

.chapter-label {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 5px 9px;
  border: var(--line) solid var(--color-accent);
  border-radius: var(--radius-xs);
  color: var(--color-accent-deep);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .09em;
}

.decision-strip {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 16px;
  margin-top: 30px;
  padding: 20px;
  border: var(--line) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.decision-strip span {
  color: var(--color-accent-deep);
  font-size: 11px;
  font-weight: 800;
}

.decision-strip p {
  margin: 0;
  font-size: 14px;
}

.deepdoc-section .table-scroll {
  margin: 30px 0;
}

.deepdoc-section .compare-table {
  min-width: 760px;
}

.deepdoc-section pre {
  margin: 28px 0 16px;
}

.support-template {
  margin-top: 34px;
  padding: clamp(18px, 3vw, 28px);
  border: var(--line) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.support-template h3 {
  margin-top: 0;
}

.support-template pre {
  margin-bottom: 0;
}

@media (max-width: 980px) {
  .deepdoc-hero-panel {
    min-height: 0;
    grid-template-columns: 1fr;
  }

  .deepdoc-route-figure {
    max-width: 650px;
  }
}

@media (max-width: 768px) {
  .deepdoc-hero-panel {
    gap: 28px;
    padding: 28px 20px;
    border-radius: var(--radius-lg);
  }

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

  .deepdoc-route-figure {
    width: 100%;
  }

  .deepdoc-flow {
    padding-top: 20px;
  }

  .deepdoc-flow > .toc-tabs {
    margin-bottom: 36px;
  }

  .deepdoc-intro {
    font-size: 15px;
  }

  .deepdoc-section p,
  .deepdoc-section li {
    font-size: 15px;
    line-height: 1.85;
  }
}

@media (max-width: 420px) {
  .deepdoc-hero-copy h1 {
    font-size: 36px;
  }

  .route-figure-head span:last-child {
    display: none;
  }

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