:root {
  color-scheme: light;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
  margin: 0;
  background: #f5f1eb;
  color: #1f2937;
}

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 24px 72px;
  line-height: 1.6;
}

header {
  text-align: center;
  margin-bottom: 40px;
}

.back-link {
  display: inline-block;
  margin-bottom: 16px;
  text-decoration: none;
  color: #0b4a6f;
  font-weight: 600;
}

.back-link:hover,
.back-link:focus {
  text-decoration: underline;
}

.icon {
  font-size: 32px;
  width: 64px;
  height: 64px;
  border-radius: 9999px;
  background: #0b4a6f;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}

h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  margin: 0 0 8px;
}

.subtitle {
  margin: 0;
  color: #4b5563;
}

.updated {
  font-size: 0.9rem;
  font-style: italic;
  color: #6b7280;
  margin-top: 16px;
}

section {
  background: white;
  border-radius: 16px;
  padding: 24px 28px;
  margin-bottom: 20px;
  box-shadow: 0 10px 30px rgba(11, 74, 111, 0.05);
}

section h2 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 1.25rem;
  color: #0b4a6f;
}

section h3 {
  margin-top: 20px;
  margin-bottom: 8px;
  font-size: 1.05rem;
  color: #1f2937;
}

ul {
  padding-left: 20px;
}

li + li {
  margin-top: 6px;
}

a {
  color: #0b4a6f;
}

a:hover,
a:focus {
  text-decoration: underline;
}

@media (max-width: 640px) {
  section {
    padding: 20px;
  }
}