.knowledge-main {
  width: min(920px, calc(100% - 36px));
  margin: 0 auto;
  padding: 28px 0 72px;
}

.knowledge-main article {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  min-width: 0;
}

.knowledge-hero,
.knowledge-section,
.knowledge-tool-callout {
  min-width: 0;
}

.knowledge-hero {
  padding: 28px 0 16px;
}

.knowledge-hero h1 {
  max-width: 850px;
  margin: 8px 0 14px;
  font-size: clamp(2rem, 5vw, 3.65rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.knowledge-answer {
  max-width: 780px;
  color: var(--muted);
  font-size: 1.18rem;
  line-height: 1.65;
}

.knowledge-reviewed {
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.82rem;
}

.knowledge-section {
  padding: 30px 0 10px;
  border-top: 1px solid var(--border);
}

.knowledge-tool-callout {
  padding: 24px;
  border: 1px solid var(--tool-mint);
  border-radius: 8px;
  background: var(--surface);
}

.knowledge-section h2,
.knowledge-tool-callout h2 {
  margin: 0 0 14px;
  font-size: 1.45rem;
  letter-spacing: 0;
}

.knowledge-section > p {
  color: var(--muted);
  line-height: 1.7;
}

.comparison-wrap {
  min-width: 0;
  width: 100%;
  overflow-x: auto;
}

.comparison-wrap table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
}

.comparison-wrap th,
.comparison-wrap td {
  padding: 13px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.comparison-wrap th {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.knowledge-list,
.diagnostic-list {
  display: grid;
  gap: 11px;
  margin: 0 0 18px;
  padding-left: 22px;
  line-height: 1.6;
}

.diagnostic-list {
  list-style: none;
  padding: 0;
}

.diagnostic-list li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  align-items: start;
}

.diagnostic-list span,
.fact-grid span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--tool-accent-soft);
  color: var(--tool-accent);
  font-weight: 800;
}

.diagnostic-list p,
.fact-grid p {
  margin: 2px 0 0;
  line-height: 1.6;
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.fact-grid > div {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 10px;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px;
}

.knowledge-tool-callout {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px;
}

.knowledge-tool-callout p {
  color: var(--muted);
}

.knowledge-tool-callout .run-tool {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 160px;
  text-decoration: none;
}

.knowledge-faq details {
  border-top: 1px solid var(--border);
  padding: 13px 0;
}

.knowledge-faq summary {
  cursor: pointer;
  font-weight: 750;
}

.knowledge-faq details p {
  color: var(--muted);
  line-height: 1.65;
}

.knowledge-related,
.knowledge-directory {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.knowledge-related a,
.knowledge-directory a {
  display: grid;
  gap: 7px;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 16px;
  color: var(--text);
  text-decoration: none;
}

.knowledge-related a:hover,
.knowledge-directory a:hover {
  border-color: var(--tool-accent);
}

.knowledge-related span,
.knowledge-directory span {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.knowledge-directory {
  margin-top: 24px;
}

@media (max-width: 700px) {
  .knowledge-main {
    width: min(calc(100% - 24px), 920px);
    padding-top: 18px;
  }

  .knowledge-section { padding: 18px 0 8px; }
  .knowledge-tool-callout {
    padding: 18px;
  }

  .fact-grid,
  .knowledge-related,
  .knowledge-directory {
    grid-template-columns: 1fr;
  }

  .knowledge-tool-callout {
    grid-template-columns: 1fr;
  }

  .knowledge-tool-callout .run-tool {
    width: 100%;
  }
}