:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --text: #1b1b1f;
  --muted: #5b5b63;
  --accent: #3b5bfd;
  --border: #e5e5ea;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14141a;
    --text: #f2f2f5;
    --muted: #a3a3ad;
    --accent: #7d93ff;
    --border: #2a2a32;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 1.25rem 4rem;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
}

header {
  padding: 2.5rem 0 1.5rem;
}

header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
}

nav {
  display: flex;
  gap: 1.25rem;
  margin-top: 1rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

nav a.active,
nav a:hover {
  color: var(--accent);
}

h1, h2 {
  line-height: 1.3;
}

h2 {
  font-size: 1.15rem;
  margin-top: 2.25rem;
}

p, li {
  color: var(--text);
}

ul {
  padding-left: 1.25rem;
}

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

.effective-date {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: -0.5rem;
}

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

.card {
  display: block;
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
}

.card h2 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
  color: var(--accent);
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}