.deepdoc-hero {
  position: relative;
  overflow-x: clip;
  max-width: 100%;
  padding-top: 72px;
  padding-bottom: 72px;
  background: var(--gradient-hero);
}

.deepdoc-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.78fr);
  align-items: center;
  gap: 64px;
}

.deepdoc-intro {
  max-width: 720px;
}

.deepdoc-intro .badge {
  margin-bottom: 22px;
}

.deepdoc-intro h1 {
  max-width: 760px;
}

.deepdoc-lede {
  max-width: 670px;
  margin-bottom: 28px;
  color: var(--color-text-muted);
  font-size: 19px;
  line-height: 1.75;
}

.decision-board {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-panel);
  box-shadow: inset 0 1px 0 var(--alpha-white-85), var(--shadow-panel);
}

.decision-board-bar {
  display: flex;
  min-height: 48px;
  align-items: center;
  gap: 14px;
  padding-inline: 18px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-chrome);
}

.decision-board-bar strong {
  min-width: 0;
  overflow: hidden;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.decision-board-dots {
  display: flex;
  flex: 0 0 auto;
  gap: 6px;
}

.decision-board-dots i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-border);
}

.decision-board-dots i:first-child {
  background: var(--color-text);
}

.decision-board-dots i:nth-child(2) {
  background: var(--color-accent);
}

.decision-board-state {
  flex: 0 0 auto;
  margin-left: auto;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: var(--alpha-accent-10);
  color: var(--color-accent-dark);
  font-size: 11px;
  font-weight: 750;
}

.decision-track {
  display: grid;
  margin: 0;
  padding: 12px 22px;
  list-style: none;
}

.decision-track li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  min-height: 64px;
  border-bottom: 1px solid var(--color-border-soft);
}

.decision-track li:last-child {
  border-bottom: 0;
}

.decision-track span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.decision-track strong {
  font-size: 15px;
}

.decision-board-foot {
  margin: 0;
  padding: 16px 22px;
  border-top: 1px solid var(--color-border);
  background: var(--color-panel-alt);
  color: var(--color-text-muted);
  font-size: 13px;
}

.guide-relationship {
  display: grid;
  grid-template-columns: minmax(250px, 0.6fr) minmax(0, 1.4fr);
  align-items: start;
  gap: 48px;
  padding: 34px 38px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-panel-alt);
  box-shadow: inset 0 1px 0 var(--alpha-white-85);
}

.relationship-title {
  margin-top: 16px;
  margin-bottom: 0;
  font-size: 28px;
}

.guide-relationship p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 16px;
}

.guide-relationship a,
.doc-section a {
  color: var(--color-accent-dark);
  font-weight: 700;
}

.deepdoc-layout {
  padding-top: 24px;
  padding-bottom: 48px;
}

.deepdoc-layout .toc-tabs {
  top: 12px;
}

.doc-section {
  width: 100%;
  max-width: var(--content-narrow);
  margin-inline: auto;
  padding-top: 76px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border);
}

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

.section-index {
  margin-bottom: 12px;
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.14em;
}

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

.doc-section h3 {
  margin-top: 42px;
  margin-bottom: 14px;
}

.doc-section p {
  color: var(--color-text-muted);
  font-size: 17px;
  line-height: 1.88;
}

.doc-section p strong,
.doc-section li strong {
  color: var(--color-text);
}

.doc-section .table-scroll {
  margin-top: 30px;
  margin-bottom: 34px;
}

.doc-section pre {
  margin-top: 24px;
  margin-bottom: 28px;
}

.support-checklist {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 32px;
  margin-bottom: 38px;
}

.support-checklist div {
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  box-shadow: inset 0 1px 0 var(--alpha-white-85);
}

.support-checklist strong {
  display: block;
  margin-bottom: 8px;
  color: var(--color-accent-dark);
}

.support-checklist p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}

.final-check {
  margin-top: 38px;
  margin-bottom: 42px;
  padding: 30px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-panel-alt);
  box-shadow: inset 0 1px 0 var(--alpha-white-85);
}

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

.final-check ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 22px;
}

.final-check li {
  color: var(--color-text-muted);
  line-height: 1.75;
}

@media (max-width: 980px) {
  .deepdoc-hero-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .decision-board {
    max-width: 720px;
  }

  .guide-relationship {
    grid-template-columns: 1fr;
    gap: 22px;
  }
}

@media (max-width: 768px) {
  .deepdoc-hero {
    padding-top: 54px;
    padding-bottom: 58px;
  }

  .deepdoc-lede {
    font-size: 17px;
  }

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

  .doc-section p {
    font-size: 16px;
    line-height: 1.82;
  }

  .support-checklist {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .deepdoc-hero {
    padding-top: 42px;
    padding-bottom: 48px;
  }

  .deepdoc-hero-grid {
    gap: 34px;
  }

  .deepdoc-intro .button-row {
    width: 100%;
  }

  .deepdoc-intro .btn {
    flex: 1 1 auto;
  }

  .decision-board-bar {
    padding-inline: 14px;
  }

  .decision-board-bar strong {
    font-size: 10px;
  }

  .decision-track {
    padding-inline: 16px;
  }

  .decision-track li {
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 12px;
  }

  .decision-board-foot {
    padding-inline: 16px;
  }

  .guide-relationship {
    padding: 24px 22px;
  }

  .relationship-title {
    font-size: 25px;
  }

  .deepdoc-layout {
    padding-top: 10px;
  }

  .doc-section {
    padding-top: 54px;
  }

  .doc-section h2 {
    margin-bottom: 26px;
  }

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

  .final-check {
    padding: 23px 21px;
  }
}