* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  background: #f4f1ea;
  color: #1f2933;
}

header {
  background: #111827;
  color: white;
  padding: 20px 40px;
}

nav {
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav h1 {
  font-size: 1.5rem;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: 600;
}

nav a:hover {
  color: #facc15;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 24px;
}

.hero {
  background: linear-gradient(135deg, #ffffff, #fef3c7);
  padding: 60px;
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  margin-bottom: 40px;
}

.hero h2 {
  font-size: 2.4rem;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #111827;
}

.hero p {
  font-size: 1.1rem;
  max-width: 750px;
  color: #4b5563;
}

.categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: white;
  padding: 30px;
  border-radius: 16px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}
.card h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
  color: #111827;
}

.card p {
  color: #4b5563;
  margin-bottom: 20px;
}

.card a {
  display: inline-block;
  background: #111827;
  color: white;
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 600;
}

.card a:hover {
  background: #374151;
}

footer {
  text-align: center;
  padding: 30px;
  color: #6b7280;
}

@media (max-width: 800px) {
  nav {
    flex-direction: column;
    gap: 16px;
  }

  nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    padding: 36px 24px;
  }

  .hero h2 {
    font-size: 1.8rem;
  }

  .categories {
    grid-template-columns: 1fr;
  }
}

.page-hero {
  background: white;
  padding: 50px;
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.07);
  margin-bottom: 32px;
}

.eyebrow {
  color: #92400e;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.page-hero h2 {
  font-size: 2.2rem;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #111827;
}

.page-hero p {
  max-width: 780px;
  color: #4b5563;
}

.content-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 24px;
  align-items: start;
}

.sidebar {
  background: #111827;
  color: white;
  padding: 24px;
  border-radius: 16px;
  position: sticky;
  top: 24px;
}

.sidebar h3 {
  margin-bottom: 14px;
}

.sidebar ul {
  list-style: none;
}

.sidebar li {
  margin-bottom: 12px;
}

.sidebar a {
  color: white;
  text-decoration: none;
}

.sidebar a:hover {
  color: #facc15;
}

.article-list {
  display: grid;
  gap: 20px;
}

.info-panel {
  background: white;
  padding: 28px;
  border-radius: 16px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
}

.info-panel h3 {
  font-size: 1.4rem;
  margin-bottom: 10px;
  color: #111827;
}

.info-panel p {
  color: #4b5563;
  margin-bottom: 16px;
}

.text-link {
  font-weight: 700;
  color: #92400e;
  text-decoration: none;
}

.text-link:hover {
  text-decoration: underline;
}

@media (max-width: 800px) {
  .page-hero {
    padding: 32px 24px;
  }

  .page-hero h2 {
    font-size: 1.8rem;
  }

  .content-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}

.infrastructure-hero {
  background: linear-gradient(135deg, #ffffff, #fef3c7);
}

.infrastructure-hero .eyebrow {
  color: #0369a1;
}

.governance-hero {
  background: linear-gradient(135deg, #ffffff, #fef3c7);
}

.governance-hero .eyebrow {
  color: #0369a1;
}





.explanations-hero {
  background: linear-gradient(135deg, #ffffff, #fef3c7);
}

.explanations-hero .eyebrow {
  color: #0369a1;
}

.explanations-sidebar {
  background: #0f172a;
}

.main-card {
  border-left: 5px solid #0369a1;
}