:root {
  --bg: #070d18;
  --panel: #0d1526;
  --border: rgba(201, 169, 97, 0.25);
  --gold: #c9a961;
  --text: #f4efe2;
  --muted: #a59a7a;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #0c1830 0%, #070d18 60%);
  color: var(--text);
  font-family: "Noto Serif JP", serif;
}

.nation-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 24px;
}

.nation-header {
  margin-bottom: 48px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 24px;
}

.sub {
  color: var(--gold);
  letter-spacing: 0.18em;
  font-size: 13px;
}

h1 {
  font-size: 48px;
  margin: 10px 0;
  color: var(--gold);
}

.lead {
  color: var(--muted);
  line-height: 1.8;
}

.nation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.nation-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: rgba(13, 21, 38, 0.95);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  transition: 0.25s ease;
}

.nation-card:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
  box-shadow: 0 0 18px rgba(201, 169, 97, 0.15);
}

.badge {
  display: inline-block;
  color: var(--gold);
  font-size: 12px;
  margin-bottom: 10px;
  letter-spacing: 0.12em;
}

.nation-card h2 {
  margin: 0 0 12px;
  color: var(--text);
}

.nation-card p {
  color: var(--muted);
  line-height: 1.7;
}