:root {
  --ink: #0d1b2d;
  --muted: #526174;
  --line: #d8e0e8;
  --paper: #ffffff;
  --wash: #f3f6f8;
  --teal: #087f8c;
  --teal-dark: #075d68;
  --gold: #d6972d;
  --navy: #102a43;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}
a { color: var(--teal-dark); }
img { max-width: 100%; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
}
.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand img { display: block; width: 132px; height: auto; }
.nav-links { display: flex; align-items: center; gap: 24px; font-weight: 700; }
.nav-links a { color: var(--ink); text-decoration: none; }
.nav-links a:hover { color: var(--teal); }
.hero {
  padding: 70px 0 54px;
  background: linear-gradient(180deg, #eaf5f4 0%, #f7f9fb 100%);
  border-bottom: 1px solid var(--line);
}
.eyebrow {
  margin: 0 0 12px;
  color: var(--teal-dark);
  font-weight: 800;
  text-transform: uppercase;
  font-size: .8rem;
}
h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(2.35rem, 6vw, 4.7rem);
  line-height: 1.04;
}
.lede { max-width: 760px; margin: 22px 0 0; color: var(--muted); font-size: 1.14rem; }
.breadcrumbs { margin-top: 22px; color: var(--muted); font-size: .92rem; }
.breadcrumbs a { color: var(--teal-dark); }
.page-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 290px;
  gap: 60px;
  padding: 58px 0 80px;
}
.article h2 { margin: 48px 0 14px; font-size: 2rem; line-height: 1.2; }
.article h3 { margin: 30px 0 10px; font-size: 1.3rem; }
.article p, .article li { color: #34475b; }
.article ul, .article ol { padding-left: 24px; }
.article .summary {
  padding: 22px 24px;
  border-left: 4px solid var(--gold);
  background: #fff8e9;
}
.checklist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.check {
  padding: 20px;
  border: 1px solid var(--line);
  background: var(--wash);
}
.check strong { display: block; margin-bottom: 5px; color: var(--ink); }
.guide-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}
.guide-link {
  padding: 18px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-weight: 800;
  background: var(--paper);
}
.guide-link:hover { border-color: var(--teal); }
.sidebar { align-self: start; position: sticky; top: 102px; }
.side-box { padding: 22px; border: 1px solid var(--line); background: var(--wash); }
.side-box + .side-box { margin-top: 18px; }
.side-box h2 { margin: 0 0 12px; font-size: 1.1rem; }
.side-box a { display: block; padding: 8px 0; font-weight: 700; }
.cta {
  display: inline-flex;
  margin-top: 12px;
  padding: 11px 16px;
  background: var(--teal);
  color: #fff !important;
  text-decoration: none;
  font-weight: 800;
}
.site-footer { padding: 38px 0; border-top: 1px solid var(--line); background: var(--navy); color: #dce6ee; }
.footer-inner { display: flex; justify-content: space-between; gap: 30px; }
.site-footer a { color: #fff; }
.disclaimer { max-width: 690px; color: #becbd5; font-size: .9rem; }

@media (max-width: 820px) {
  .nav { min-height: 64px; }
  .nav-links { gap: 12px; font-size: .88rem; }
  .nav-links a:nth-child(2) { display: none; }
  .hero { padding: 48px 0 38px; }
  .page-grid { grid-template-columns: 1fr; gap: 34px; padding-top: 38px; }
  .sidebar { position: static; }
  .checklist, .guide-links { grid-template-columns: 1fr; }
  .footer-inner { display: block; }
}

@media (max-width: 520px) {
  .container { width: min(100% - 28px, 1120px); }
  .brand img { width: 108px; }
  .nav-links a:nth-child(3) { display: none; }
  h1 { font-size: 2.35rem; }
}