:root {
  --primary: #003153;
  --primary-light: #0a4a75;
  --accent: #c8860a;
  --text: #1a1a1a;
  --text-muted: #5c5c5c;
  --bg: #fafafa;
  --surface: #ffffff;
  --border: #e5e5e5;
  --max-width: 42rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #f0f0f0;
    --text-muted: #a8a8a8;
    --bg: #0f1419;
    --surface: #1a2332;
    --border: #2d3a4d;
    --accent: #e39910;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

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

@media (prefers-color-scheme: dark) {
  a {
    color: #6eb3e0;
  }
}

a:hover {
  text-decoration-thickness: 2px;
}

.site-header {
  background: var(--primary);
  color: #fff;
  padding: 1.25rem 1.5rem;
}

.site-header a {
  color: #fff;
  text-decoration: none;
}

.site-header a:hover {
  text-decoration: underline;
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
}

.site-header__brand {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.9375rem;
}

.site-nav a[aria-current="page"] {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}

article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem 1.75rem;
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--primary);
}

@media (prefers-color-scheme: dark) {
  h1 {
    color: #fff;
  }
}

.effective-date {
  margin: 0 0 1.75rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

h2 {
  margin: 1.75rem 0 0.5rem;
  font-size: 1.125rem;
  line-height: 1.35;
  color: var(--primary);
}

@media (prefers-color-scheme: dark) {
  h2 {
    color: #d4e4f0;
  }
}

p,
ul {
  margin: 0 0 1rem;
}

ul {
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.35rem;
}

.contact-block {
  margin: 0.5rem 0 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.contact-block a {
  font-weight: 500;
}

.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 2rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
}

.hero {
  text-align: center;
  padding: 0.5rem 0 0.5rem;
}

.hero p {
  font-size: 1.0625rem;
  color: var(--text-muted);
}

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

@media (min-width: 480px) {
  .card-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.card-link {
  display: block;
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.card-link:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(0, 49, 83, 0.08);
}

.card-link__title {
  display: block;
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--primary);
  margin-bottom: 0.35rem;
}

@media (prefers-color-scheme: dark) {
  .card-link__title {
    color: #fff;
  }
}

.card-link__desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}