:root {
  --bg: #f8f7f4;
  --surface: #ffffff;
  --text: #1c2430;
  --muted: #5a6573;
  --accent: #2d6a7e;
  --accent-soft: #e8f2f5;
  --border: #dde3e8;
  --max: 42rem;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

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

a:hover {
  text-decoration: none;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  z-index: 100;
}

.skip-link:focus {
  left: 0;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 56rem;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--muted);
  font-weight: 500;
}

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

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

nav a[aria-current="page"] {
  color: var(--accent);
  font-weight: 600;
}

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

main {
  max-width: 56rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3rem;
}

.hero {
  max-width: var(--max);
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
}

.lead {
  font-size: 1.125rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.card-grid {
  display: grid;
  gap: 1rem;
  margin: 2rem 0;
}

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.card h2 {
  font-size: 1rem;
  margin: 0 0 0.5rem;
}

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

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  border-radius: 0.375rem;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: #245a6b;
  color: #fff;
}

.btn-secondary {
  background: var(--surface);
  color: var(--accent);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: var(--accent-soft);
}

.disclaimer {
  margin-top: 2.5rem;
  padding: 1rem 1.25rem;
  background: var(--accent-soft);
  border-radius: 0.375rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.disclaimer.glossary {
  margin-top: 1.25rem;
  margin-bottom: 0;
}

.disclaimer strong {
  color: var(--text);
}

h2.section-title {
  font-size: 1.35rem;
  margin: 2rem 0 0.75rem;
  letter-spacing: -0.02em;
}

ul.features {
  padding-left: 1.25rem;
  color: var(--muted);
}

ul.features li {
  margin-bottom: 0.5rem;
}

ul.features strong {
  color: var(--text);
}

.contact-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1.5rem;
  max-width: var(--max);
}

.contact-block dt {
  font-weight: 600;
  margin-top: 1rem;
}

.contact-block dt:first-child {
  margin-top: 0;
}

.contact-block dd {
  margin: 0.25rem 0 0;
  color: var(--muted);
}

.prose {
  max-width: var(--max);
}

.prose h1 {
  font-size: 1.75rem;
  margin: 0 0 1rem;
}

.prose h2 {
  font-size: 1.15rem;
  margin: 1.75rem 0 0.5rem;
}

.prose p,
.prose li {
  color: var(--muted);
}

.prose ul {
  padding-left: 1.25rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  margin-top: 2rem;
}

.footer-inner {
  max-width: 56rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.footer-inner p {
  margin: 0 0 0.5rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}