.knowledge-hero {
  padding-block: 104px 92px;
}

.knowledge-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 980px;
}

.knowledge-hero h1 {
  max-width: 20ch;
}

.knowledge-hero h1.knowledge-title-long {
  max-width: 24ch;
  font-size: clamp(48px, 7vw, 78px);
}

.knowledge-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 34px;
  color: #8f939b;
  font: 800 12px/1.4 var(--mono);
  text-transform: uppercase;
}

.knowledge-article {
  max-width: 840px;
  padding-block: 88px 104px;
}

.knowledge-article h2 {
  margin: 64px 0 18px;
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.05;
}

.knowledge-article h2:first-child {
  margin-top: 0;
}

.knowledge-article h3 {
  margin-bottom: 12px;
  font-size: 24px;
  line-height: 1.15;
}

.knowledge-article p {
  color: #4f535b;
  font-size: 19px;
  line-height: 1.72;
}

.knowledge-article strong {
  color: var(--ink);
}

.knowledge-callout {
  display: grid;
  gap: 6px;
  margin: 34px 0;
  border-left: 4px solid var(--red);
  border-radius: 0 8px 8px 0;
  background: #f2eee9;
  padding: 24px 28px;
}

.knowledge-callout strong {
  font-size: 21px;
}

.knowledge-callout span {
  color: #5c6068;
}

.method-grid {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.method-grid section {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 28px;
}

.method-grid .section-label {
  margin-bottom: 12px;
}

.method-grid p:last-child {
  margin-bottom: 0;
  font-size: 17px;
}

.knowledge-steps {
  margin: 30px 0 0;
  padding: 0;
  counter-reset: step;
  list-style: none;
}

.knowledge-steps li {
  display: grid;
  position: relative;
  grid-template-columns: minmax(190px, .7fr) 1.3fr;
  gap: 28px;
  border-top: 1px solid var(--line);
  padding: 22px 0 22px 58px;
  counter-increment: step;
}

.knowledge-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 24px;
  color: var(--red);
  font: 900 16px/1 var(--mono);
}

.knowledge-steps span {
  color: #5c6068;
}

.knowledge-checklist {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.knowledge-checklist li {
  position: relative;
  border-top: 1px solid var(--line);
  padding: 16px 0 16px 34px;
  color: #4f535b;
  font-weight: 750;
}

.knowledge-checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--red);
  font-weight: 900;
}

.knowledge-sources {
  margin-top: 72px;
  border-top: 2px solid var(--ink);
  padding-top: 8px;
}

.knowledge-sources h2 {
  margin-top: 28px;
  font-size: 30px;
}

.knowledge-sources ul {
  padding-left: 20px;
}

.knowledge-sources li {
  margin: 12px 0;
}

.knowledge-sources a {
  color: var(--red-dark);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.knowledge-sources p {
  margin-top: 28px;
  color: #737780;
  font-size: 14px;
}

.knowledge-index h2 {
  max-width: none;
}

.knowledge-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 38px;
}

.knowledge-card {
  display: grid;
  min-height: 360px;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 56px;
  align-items: end;
  border: 1px solid var(--line);
  border-top: 4px solid var(--red);
  border-radius: 10px;
  background: #fff;
  padding: 42px;
}

.knowledge-card-featured {
  grid-column: 1 / -1;
}

.knowledge-card-compact {
  min-height: 420px;
  grid-template-columns: 1fr;
  gap: 30px;
  padding: 34px;
}

.knowledge-card-compact .knowledge-card-footer {
  border-top: 1px solid var(--line);
  border-left: 0;
  padding-top: 24px;
  padding-left: 0;
}

.knowledge-card h3 {
  max-width: 22ch;
  margin-bottom: 20px;
  font-family: var(--display);
  font-size: clamp(36px, 5vw, 58px);
  line-height: .98;
  text-transform: uppercase;
}

.knowledge-card.knowledge-card-compact h3 {
  max-width: 100%;
  font-size: clamp(28px, 2.5vw, 38px);
}

.knowledge-card p:not(.section-label) {
  max-width: 58ch;
  margin-bottom: 0;
  color: #5c6068;
  font-size: 18px;
}

.knowledge-card-footer {
  display: grid;
  gap: 22px;
  border-left: 1px solid var(--line);
  padding-left: 32px;
}

.knowledge-card-footer span {
  color: #737780;
  font: 800 12px/1.4 var(--mono);
  text-transform: uppercase;
}

@media (max-width: 900px) {
  .knowledge-list {
    grid-template-columns: 1fr;
  }

  .knowledge-card-featured {
    grid-column: auto;
  }
}

@media (max-width: 760px) {
  .knowledge-hero {
    padding-block: 72px;
  }

  .knowledge-hero h1 {
    font-size: clamp(42px, 13vw, 58px);
  }

  .knowledge-hero h1.knowledge-title-long {
    font-size: 38px;
  }

  .knowledge-article {
    padding-block: 64px 80px;
  }

  .knowledge-article p {
    font-size: 17px;
  }

  .knowledge-steps li {
    grid-template-columns: 1fr;
    gap: 5px;
    padding-left: 44px;
  }

  .method-grid section,
  .knowledge-callout {
    padding: 22px;
  }

  .knowledge-card {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 28px;
  }

  .knowledge-card-footer {
    border-top: 1px solid var(--line);
    border-left: 0;
    padding-top: 24px;
    padding-left: 0;
  }
}