:root {
  --navy: #13243a;
  --navy-light: #1d3654;
  --accent: #2f7dbf;
  --accent-dark: #1f5f96;
  --text: #1c2430;
  --muted: #5a6675;
  --bg: #ffffff;
  --bg-alt: #f3f6f9;
  --border: #dce3ea;
  --max: 64rem;
}

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

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
}

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

a:hover,
a:focus {
  color: var(--accent);
}

h1,
h2,
h3 {
  line-height: 1.25;
  color: var(--navy);
}

h1 {
  font-size: 2rem;
  margin: 0 0 1rem;
}

h2 {
  font-size: 1.4rem;
  margin: 2.25rem 0 0.75rem;
}

h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.5rem;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--bg);
  padding: 0.5rem 1rem;
  z-index: 10;
}

.skip-link:focus {
  left: 0.5rem;
}

/* Header */
.site-header {
  background: var(--navy);
  color: #fff;
}

.site-header .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.wordmark {
  color: #fff;
  text-decoration: none;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.wordmark:hover,
.wordmark:focus {
  color: #fff;
}

.wordmark span {
  color: #8cc4f0;
  font-weight: 400;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
}

.site-nav a {
  color: #d6e2ee;
  text-decoration: none;
  font-size: 0.975rem;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a:focus,
.site-nav a[aria-current="page"] {
  color: #fff;
  border-bottom-color: #8cc4f0;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--navy-light), var(--navy));
  color: #fff;
  padding: 3.5rem 0 3.75rem;
}

.hero h1 {
  color: #fff;
  font-size: 2.4rem;
  margin-bottom: 0.75rem;
}

.hero p {
  max-width: 40rem;
  font-size: 1.15rem;
  color: #d6e2ee;
  margin: 0;
}

/* Page sections */
.page {
  padding: 2.5rem 0 3.5rem;
}

.page > .container > :first-child {
  margin-top: 0;
}

.lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 44rem;
}

.prose > * {
  max-width: 46rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}

.card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1.25rem 1.5rem;
}

.card h2,
.card h3 {
  margin-top: 0;
  font-size: 1.15rem;
}

.card p {
  margin-bottom: 0;
}

.callout {
  background: var(--bg-alt);
  border-left: 4px solid var(--accent);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.callout p {
  margin: 0;
}

.meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.details {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.5rem 1.5rem;
  margin: 1rem 0 0;
}

.details dt {
  font-weight: 600;
  color: var(--navy);
}

.details dd {
  margin: 0;
}

@media (max-width: 36rem) {
  .details {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }

  .details dd {
    margin-bottom: 0.6rem;
  }
}

/* Footer */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.925rem;
  padding: 1.5rem 0;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--muted);
}

@media (max-width: 36rem) {
  h1 {
    font-size: 1.7rem;
  }

  .hero {
    padding: 2.5rem 0;
  }

  .hero h1 {
    font-size: 1.9rem;
  }
}