:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --ink: #1d2320;
  --ink-soft: #55605a;
  --line: #e2e0d8;
  --accent: #0274be;
  --accent-soft: #e8f2fa;
  --accent-dark: #055b92;
  --warn-bg: #fdf6e6;
  --warn-line: #e8d49a;
  --radius: 10px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Skip link ---------- */

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 6px 0;
  z-index: 50;
}

.skip:focus { left: 0; }

/* ---------- Header / navigation ---------- */

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.brand span { color: var(--accent); }

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 6px 10px;
  border-radius: 6px;
}

.site-nav a:hover { background: var(--accent-soft); color: var(--accent-dark); }

.site-nav a.active {
  color: var(--accent-dark);
  background: var(--accent-soft);
  font-weight: 600;
}

/* ---------- Hero ---------- */

.hero {
  background: linear-gradient(180deg, var(--accent-soft), var(--bg));
  border-bottom: 1px solid var(--line);
  padding: 56px 0 48px;
}

.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(1.9rem, 4.5vw, 2.75rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.hero p {
  margin: 0;
  max-width: 62ch;
  font-size: 1.1rem;
  color: var(--ink-soft);
}

.page-head {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  padding: 40px 0 32px;
}

.page-head h1 {
  margin: 0 0 10px;
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  letter-spacing: -0.02em;
}

.page-head p {
  margin: 0;
  max-width: 66ch;
  color: var(--ink-soft);
}

/* ---------- Breadcrumbs ---------- */

.crumbs {
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  font-size: 0.85rem;
  padding: 10px 0;
  color: var(--ink-soft);
}

.crumbs a { color: var(--ink-soft); text-decoration: none; }
.crumbs a:hover { color: var(--accent-dark); text-decoration: underline; }
.crumbs span { margin: 0 6px; }
.crumbs [aria-current] { color: var(--ink); margin-left: 0; }

/* ---------- Related links ---------- */

.related {
  margin: 44px 0 0;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related h2 {
  margin: 0 0 10px;
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.related ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 4px 24px;
}

.related li { margin: 0; }

.related a {
  display: block;
  padding: 5px 0;
  text-decoration: none;
  font-weight: 600;
}

.related a:hover { text-decoration: underline; }

.related .desc {
  display: block;
  font-weight: 400;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

/* ---------- Next step / outbound ---------- */

.next-step {
  margin: 40px 0 0;
  padding: 24px 26px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  border: 1px solid #c8e0f2;
}

.next-step h2 { margin: 0 0 8px; font-size: 1.15rem; text-transform: none; letter-spacing: -0.01em; }
.next-step p { margin: 0 0 10px; }
.next-step p:last-child { margin-bottom: 0; }

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ---------- Content ---------- */

main { padding: 40px 0 56px; }

h2 {
  margin: 40px 0 12px;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
}

h3 {
  margin: 26px 0 8px;
  font-size: 1.1rem;
}

main p, main li { max-width: 72ch; }

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

ul, ol { padding-left: 22px; }

li { margin: 6px 0; }

/* ---------- Cards ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin: 28px 0 8px;
}

.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  text-decoration: none;
  color: inherit;
  transition: border-color .15s ease, transform .15s ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card h3 { margin: 0 0 6px; color: var(--accent-dark); }

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

/* ---------- Boxes ---------- */

.note, .callout {
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 24px 0;
}

.note {
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
}

.callout {
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
}

.note p:last-child, .callout p:last-child { margin-bottom: 0; }
.note p:first-child, .callout p:first-child { margin-top: 0; }

/* ---------- Tables ---------- */

.table-scroll { overflow-x: auto; margin: 20px 0; }

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 460px;
  background: var(--surface);
  font-size: 0.95rem;
}

th, td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

thead th {
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tbody tr:last-child td { border-bottom: none; }

/* ---------- Glossary ---------- */

.glossary dt {
  font-weight: 700;
  margin-top: 18px;
  color: var(--accent-dark);
}

.glossary dd {
  margin: 4px 0 0;
  max-width: 72ch;
  color: var(--ink-soft);
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding: 32px 0 40px;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

.site-footer h4 {
  margin: 0 0 8px;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
}

.site-footer ul { list-style: none; padding: 0; margin: 0; }

.site-footer a { color: var(--ink-soft); text-decoration: none; }
.site-footer a:hover { color: var(--accent-dark); text-decoration: underline; }

.footer-bottom {
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .hero { padding: 40px 0 34px; }
  .site-header .wrap { align-items: flex-start; }
}