.knowledge-page {
  padding: 48px clamp(18px, 5vw, 76px) 84px;
}

.knowledge-article {
  max-width: 1120px;
  margin: 0 auto;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumbs a {
  color: var(--blue-2);
}

.knowledge-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(260px, 0.65fr);
  gap: 28px;
  align-items: end;
  padding: clamp(28px, 5vw, 58px);
  border: 1px solid rgba(95, 158, 238, 0.24);
  border-radius: 26px;
  background:
    radial-gradient(circle at 85% 15%, rgba(255, 122, 0, 0.15), transparent 34%),
    linear-gradient(145deg, rgba(8, 27, 52, 0.97), rgba(3, 15, 34, 0.98));
  box-shadow: var(--shadow);
}

.knowledge-kicker {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--orange-2);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.knowledge-hero h1 {
  max-width: 820px;
  margin-bottom: 18px;
  font-size: clamp(38px, 5.8vw, 70px);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.knowledge-hero .lead {
  max-width: 780px;
  margin-bottom: 18px;
  color: #c7d7ee;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.6;
}

.knowledge-meta {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.summary-card {
  padding: 24px;
  border: 1px solid rgba(70, 166, 255, 0.28);
  border-radius: 18px;
  background: rgba(23, 119, 255, 0.09);
}

.summary-card strong {
  display: block;
  margin-bottom: 12px;
  color: #ffffff;
}

.summary-card ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  color: #bdd0ea;
  font-size: 13px;
  line-height: 1.5;
  list-style: none;
}

.summary-card li::before {
  content: "✓";
  margin-right: 8px;
  color: var(--green);
  font-weight: 900;
}

.knowledge-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 290px;
  gap: 34px;
  align-items: start;
  margin-top: 36px;
}

.knowledge-content {
  padding: clamp(26px, 4vw, 48px);
  border: 1px solid rgba(95, 158, 238, 0.18);
  border-radius: 22px;
  background: rgba(5, 20, 42, 0.91);
}

.knowledge-content section + section {
  margin-top: 48px;
  padding-top: 42px;
  border-top: 1px solid rgba(95, 158, 238, 0.16);
}

.knowledge-content h2 {
  margin-bottom: 16px;
  color: #ffffff;
  font-size: clamp(27px, 3.5vw, 39px);
  line-height: 1.12;
  letter-spacing: -0.025em;
}

.knowledge-content h3 {
  margin: 28px 0 10px;
  color: #ffffff;
  font-size: 21px;
}

.knowledge-content p,
.knowledge-content li {
  color: #bfd0e7;
  font-size: 16px;
  line-height: 1.75;
}

.knowledge-content ul,
.knowledge-content ol {
  display: grid;
  gap: 9px;
  padding-left: 24px;
}

.formula-box,
.example-box,
.warning-box {
  margin: 24px 0;
  padding: 22px;
  border-radius: 16px;
}

.formula-box {
  border: 1px solid rgba(70, 166, 255, 0.35);
  background: rgba(23, 119, 255, 0.1);
}

.formula-box code {
  color: #ffffff;
  font-family: "Inter", Arial, sans-serif;
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 900;
}

.example-box {
  border: 1px solid rgba(50, 211, 110, 0.32);
  background: rgba(50, 211, 110, 0.08);
}

.warning-box {
  border: 1px solid rgba(255, 122, 0, 0.34);
  background: rgba(255, 122, 0, 0.09);
}

.formula-box p,
.example-box p,
.warning-box p {
  margin-bottom: 0;
}

.article-nav {
  position: sticky;
  top: 108px;
  padding: 22px;
  border: 1px solid rgba(95, 158, 238, 0.18);
  border-radius: 18px;
  background: rgba(5, 20, 42, 0.94);
}

.article-nav strong {
  display: block;
  margin-bottom: 14px;
}

.article-nav a {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.article-nav a:hover {
  color: var(--orange-2);
}

.related-guides {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 15px;
  margin-top: 34px;
}

.related-guides a {
  padding: 20px;
  border: 1px solid rgba(95, 158, 238, 0.2);
  border-radius: 15px;
  background: rgba(10, 32, 63, 0.82);
}

.related-guides small,
.related-guides strong {
  display: block;
}

.related-guides small {
  margin-bottom: 8px;
  color: var(--blue-2);
}

.related-guides strong {
  color: #ffffff;
  line-height: 1.35;
}

.knowledge-cta {
  margin-top: 36px;
  padding: 34px;
  border: 1px solid rgba(255, 122, 0, 0.36);
  border-radius: 22px;
  text-align: center;
  background: linear-gradient(135deg, rgba(255, 122, 0, 0.13), rgba(23, 119, 255, 0.12));
}

.knowledge-cta p {
  max-width: 680px;
  margin: 0 auto 20px;
  color: #c7d7ee;
}

.content-footer {
  grid-template-columns: minmax(240px, 1.4fr) repeat(3, 1fr);
}

@media (max-width: 920px) {
  .knowledge-hero,
  .knowledge-layout {
    grid-template-columns: 1fr;
  }

  .article-nav {
    position: static;
    order: -1;
  }
}

@media (max-width: 680px) {
  .knowledge-page {
    padding-top: 28px;
  }

  .knowledge-hero,
  .knowledge-content {
    border-radius: 18px;
  }

  .related-guides {
    grid-template-columns: 1fr;
  }
}