@import url('https://fonts.googleapis.com/css2?family=Public+Sans:wght@400;500;600&family=Source+Serif+4:wght@500&display=swap');

:root {
  --background: #f4f6f8;
  --surface: #ffffff;
  --surface-alt: #fafbfc;
  --ink: #101828;
  --muted: #4b5563;
  --line: #e4e9f2;
  --accent: #0f62fe;
  --accent-dark: #0043ce;
  --badge: #d3e6ff;
  --radius: 16px;
  --shadow: 0 16px 36px rgba(15, 23, 42, 0.08);
  font-family:
    'Public Sans',
    'Source Serif 4',
    system-ui,
    -apple-system,
    'Segoe UI',
    sans-serif;
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--background);
  color: var(--ink);
  font-family:
    'Public Sans',
    system-ui,
    -apple-system,
    'Segoe UI',
    sans-serif;
  line-height: 1.6;
}

.page-shell {
  min-height: 100vh;
  padding: clamp(20px, 5vw, 72px);
}

.card-frame {
  max-width: 1100px;
  margin: 0 auto;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: clamp(24px, 4vw, 56px);
  box-shadow: var(--shadow);
}

.hero {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 24px;
}

.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 12px;
  color: #7a8799;
}

.hero h1 {
  margin: 0;
  font-size: clamp(30px, 4vw, 44px);
  font-family: 'Source Serif 4', 'Public Sans', serif;
  color: var(--ink);
}

.hero p {
  margin: 0;
  font-size: 17px;
  color: var(--muted);
  max-width: 760px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--badge);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
}

.doc-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.doc-switch a {
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 18px;
  background: var(--surface-alt);
  transition:
    color 120ms ease,
    border-color 120ms ease,
    background 120ms ease;
}

.doc-switch a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.doc-switch a[aria-current='page'] {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.section-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
  margin: 24px 0 32px;
}

.section-nav a {
  text-decoration: none;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface-alt);
  color: var(--muted);
  font-weight: 500;
  font-size: 14px;
  transition:
    border-color 120ms ease,
    color 120ms ease;
}

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

main {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.section-card {
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
}

.section-card h2 {
  margin: 0 0 12px 0;
  font-size: 20px;
  color: var(--ink);
  font-family: 'Source Serif 4', 'Public Sans', serif;
}

.section-card p {
  margin: 0 0 12px 0;
  color: var(--muted);
}

.section-card ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.callout {
  border-left: 4px solid var(--accent);
  padding: 12px 16px;
  background: #edf2ff;
  border-radius: 12px;
  color: #202c4a;
  margin-bottom: 16px;
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline-item {
  padding: 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
}

.timeline-item strong {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
}

.three-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.three-col article {
  padding: 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
}

.contact-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--muted);
}

.contact-grid a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

footer {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: #5f6b7c;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 14px;
}

footer a {
  color: var(--accent);
  text-decoration: none;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 24px;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: 20px;
}

@media (max-width: 640px) {
  .card-frame {
    padding: 20px;
  }
  .section-card {
    padding: 20px;
  }
  .doc-switch {
    flex-direction: column;
    align-items: flex-start;
  }
  footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}