.page-shell {
  width: min(var(--page-max-width), calc(100% - (var(--content-padding) * 2)));
  margin-inline: auto;
}

.knowledge-main {
  min-height: 60vh;
  padding-bottom: clamp(4rem, 8vw, 7rem);
}

.breadcrumbs {
  padding-top: 1.5rem;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  color: #a3aaa3;
}

.breadcrumbs a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--color-brand-primary-hover);
}

.knowledge-hero {
  padding-block: clamp(3.25rem, 7vw, 6.5rem) clamp(3rem, 6vw, 5rem);
}

.page-eyebrow {
  margin: 0 0 0.9rem;
  color: var(--color-brand-primary);
  font-size: 0.9375rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.knowledge-hero h1 {
  max-width: 17em;
  margin: 0;
  color: var(--color-text-primary);
  font-size: clamp(2.5rem, 5.6vw, 5rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.knowledge-lead {
  max-width: 48rem;
  margin: 1.5rem 0 0;
  color: var(--color-text-secondary);
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  line-height: 1.9;
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.5rem;
  margin: 2.25rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
}

.page-meta div {
  display: grid;
  gap: 0.15rem;
}

.page-meta dt {
  color: var(--color-text-secondary);
  font-size: 0.75rem;
}

.page-meta dd {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 700;
}

.knowledge-body {
  display: grid;
  gap: clamp(3rem, 6vw, 5rem);
}

.article-layout .knowledge-hero,
.article-layout .knowledge-body {
  width: min(var(--article-max-width), calc(100% - (var(--content-padding) * 2)));
}

.content-section {
  scroll-margin-top: 7rem;
}

.content-section h2,
.related-content h2 {
  max-width: 22em;
  margin: 0 0 1.25rem;
  color: var(--color-brand-primary-hover);
  font-size: clamp(1.75rem, 3vw, 2.65rem);
  line-height: 1.25;
}

.content-section > p,
.content-section > ul {
  max-width: var(--article-max-width);
}

.content-section > p {
  margin: 0.9rem 0 0;
  color: var(--color-text-secondary);
  font-size: 1.0625rem;
}

.content-section > ul {
  display: grid;
  gap: 0.75rem;
  margin: 1.25rem 0 0;
  padding-left: 1.35rem;
}

.section-intro {
  font-size: 1.125rem !important;
}

.knowledge-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.knowledge-card {
  min-width: 0;
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

a.knowledge-card {
  min-height: 44px;
  transition: transform 160ms ease, border-color 160ms ease;
}

a.knowledge-card:hover,
a.knowledge-card:focus-visible {
  border-color: var(--color-brand-primary);
  transform: translateY(-2px);
}

.knowledge-card.suitable {
  border-color: #c9ddca;
  background: var(--color-surface-soft);
}

.knowledge-card.boundary {
  border-left: 3px solid var(--color-accent-gold);
  background: #fbfaf6;
}

.knowledge-card h3 {
  margin: 0;
  font-size: 1.15rem;
}

.knowledge-card p,
.knowledge-card li,
.knowledge-card span {
  color: var(--color-text-secondary);
}

.knowledge-card p {
  margin: 0.6rem 0 0;
}

.knowledge-card ul {
  margin: 0.85rem 0 0;
  padding-left: 1.2rem;
}

.knowledge-card strong {
  display: inline-block;
  margin-top: 1rem;
  color: var(--color-brand-primary);
}

.knowledge-note {
  max-width: var(--article-max-width);
  margin-top: 1.5rem;
  padding: 1.15rem 1.25rem;
  border-left: 3px solid var(--color-accent-gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-accent-gold-soft);
}

.help-steps {
  display: grid;
  gap: 0;
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: help-step;
}

.help-steps li {
  position: relative;
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 1rem;
  padding: 0 0 1.75rem;
  counter-increment: help-step;
}

.help-steps li::before {
  content: counter(help-step);
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  border: 1px solid #b9d4c2;
  border-radius: 50%;
  background: var(--color-surface-soft);
  color: var(--color-brand-primary-hover);
  font-weight: 800;
}

.help-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 3rem;
  bottom: 0.25rem;
  left: 1.35rem;
  width: 1px;
  background: var(--color-border);
}

.help-steps h3 {
  margin: 0.1rem 0 0.45rem;
  color: var(--color-text-primary);
  font-size: 1.12rem;
}

.help-steps p {
  margin: 0;
  color: var(--color-text-secondary);
}

.help-faq-list {
  max-width: var(--article-max-width);
  margin-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.help-faq-item {
  border-bottom: 1px solid var(--color-border);
}

.help-faq-item summary {
  min-height: 56px;
  display: flex;
  align-items: center;
  padding: 0.85rem 2rem 0.85rem 0;
  color: var(--color-text-primary);
  font-weight: 750;
  cursor: pointer;
}

.help-faq-item p {
  margin: 0;
  padding: 0 0 1.25rem;
  color: var(--color-text-secondary);
}

.knowledge-screenshot {
  max-width: 58rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 14rem;
  align-items: end;
  gap: 1rem;
  margin: 2rem 0 0;
  padding: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-product);
}

.knowledge-screenshot img {
  width: 100%;
  max-height: 38rem;
  object-fit: cover;
  object-position: top;
  border-radius: var(--radius-md);
}

.knowledge-screenshot figcaption {
  padding: 0.75rem;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.related-content {
  padding-top: 2.5rem;
  border-top: 1px solid var(--color-border);
}

.related-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.related-links a {
  min-height: 72px;
  display: grid;
  align-content: center;
  gap: 0.2rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.related-links span {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.site-footer .page-shell {
  width: min(var(--page-max-width), calc(100% - (var(--content-padding) * 2)));
}

.footer-top.page-shell,
.footer-directory.page-shell,
.footer-legal.page-shell {
  margin-inline: auto;
}

.footer-legal.page-shell {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.25rem;
}

.footer-legal.page-shell a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.site-footer .footer-directory a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

@media (max-width: 760px) {
  .knowledge-hero {
    padding-block: 2.5rem 3rem;
  }

  .knowledge-hero h1 {
    font-size: clamp(2.1rem, 9vw, 2.5rem);
  }

  .page-meta,
  .knowledge-cards,
  .related-links,
  .knowledge-screenshot {
    grid-template-columns: 1fr;
  }

  .knowledge-screenshot img {
    max-height: 28rem;
  }

  .knowledge-card {
    padding: 1.25rem;
  }

  .help-steps li {
    grid-template-columns: 2.75rem minmax(0, 1fr);
    gap: 0.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}