:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --text: #e7ecf3;
  --muted: #9aa5b5;
  --accent: #3b82f6;
  --border: #2a3544;
  --warning: #f59e0b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
}

a {
  color: var(--accent);
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

header {
  border-bottom: 1px solid var(--border);
  padding: 1rem 0 1.5rem;
  margin-bottom: 2rem;
}

header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
}

header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.notice {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--warning);
  padding: 1rem 1.25rem;
  border-radius: 8px;
  margin: 1.5rem 0;
}

h2 {
  font-size: 1.2rem;
  margin-top: 2rem;
}

ul, ol {
  padding-left: 1.25rem;
}

li {
  margin: 0.35rem 0;
}

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 1rem;
}

.nav a {
  text-decoration: none;
}

.nav a:hover {
  text-decoration: underline;
}

.card-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}

.card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.card a {
  font-weight: 600;
  text-decoration: none;
}