* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.65;
  background: #f4f6f8;
  color: #111827;
}
a { color: #0b3d5f; text-decoration: none; }
a:hover { text-decoration: underline; }
.site-header {
  background: #0b3d5f;
  color: #ffffff;
  padding: 1.6rem 0 1.2rem 0;
}
.site-header h1 {
  margin: 0 0 0.3rem 0;
}
.site-header .tagline {
  margin: 0.1rem 0 0.9rem 0;
  font-size: 0.96rem;
  max-width: 800px;
}
.container {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1.1rem;
}
.main-nav ul {
  list-style: none;
  padding: 0;
  margin: 0.4rem 0 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}
.main-nav a {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: 0.9rem;
  color: #e5f0fb;
}
.main-nav a.active,
.main-nav a:hover {
  background: #145184;
}
main.container {
  padding: 1.8rem 1.1rem 2.4rem 1.1rem;
}
.content {
  background: #ffffff;
  border-radius: 10px;
  padding: 1.8rem 1.9rem;
  box-shadow: 0 1px 4px rgba(15,23,42,0.08);
}
.content h2 {
  margin-top: 1.6rem;
  margin-bottom: 0.4rem;
  color: #0f172a;
}
.content h3 {
  margin-top: 1.2rem;
  margin-bottom: 0.3rem;
  color: #111827;
}
.content p {
  margin: 0.55rem 0;
}
.content blockquote {
  margin: 1rem 0;
  padding: 0.85rem 1rem;
  border-left: 3px solid #0b3d5f;
  background: #eff6ff;
  font-style: italic;
}
.content ul,
.content ol {
  padding-left: 1.4rem;
  margin: 0.5rem 0;
}
.next-links {
  list-style: disc;
}
.disclaimer {
  font-size: 0.9rem;
  color: #4b5563;
  margin-top: 0.8rem;
}
.site-footer {
  background: #0b3d5f;
  color: #e5edf5;
  padding: 1rem 0;
  font-size: 0.85rem;
}
.site-footer p {
  margin: 0;
}
@media (max-width: 640px) {
  .content {
    padding: 1.4rem 1.2rem;
  }
}