:root {
  --ink: #15252b;
  --muted: #53646a;
  --brand: #17324d;
  --brand-dark: #0d2033;
  --accent: #2c7a7b;
  --surface: #f1f6f7;
  --surface-strong: #dceced;
  --paper: #ffffff;
  --line: #cadadd;
  --warning: #fff7dc;
  --warning-line: #d7b752;
  --shadow: 0 18px 50px rgba(20, 47, 58, 0.09);
  --radius: 22px;
  --content: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #f9fbfb;
  font: 16px/1.65 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--brand); }
a:hover { color: var(--brand-dark); }
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 10px;
  color: #fff;
  background: var(--brand-dark);
}
.skip-link:focus { top: 16px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 86%, transparent);
  background: rgba(249, 251, 251, 0.95);
  backdrop-filter: blur(14px);
}
.content, .header-inner, .footer-inner {
  width: min(calc(100% - 36px), var(--content));
  margin-inline: auto;
}
.header-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  color: var(--ink);
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 850;
  letter-spacing: -0.035em;
}
.brand span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--ink); text-decoration: none; font-size: .95rem; font-weight: 700; }
.nav-links .nav-cta {
  padding: 10px 15px;
  border-radius: 999px;
  color: #fff;
  background: var(--brand);
}
.hero {
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 8%, color-mix(in srgb, var(--accent) 24%, transparent), transparent 34%),
    linear-gradient(140deg, var(--surface) 0%, #f9fbfb 58%, var(--surface) 100%);
}
.hero-grid {
  min-height: 610px;
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(300px, .78fr);
  align-items: center;
  gap: 62px;
  padding-block: 80px;
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: .8rem;
  font-weight: 850;
  letter-spacing: .12em;
  text-transform: uppercase;
}
h1, h2, h3 { margin-top: 0; line-height: 1.13; letter-spacing: -.035em; }
h1 { max-width: 820px; margin-bottom: 24px; font-size: clamp(2.7rem, 6vw, 5.15rem); }
h2 { margin-bottom: 18px; font-size: clamp(2rem, 4vw, 3.2rem); }
h3 { margin-bottom: 10px; font-size: 1.35rem; }
.lead { max-width: 760px; margin: 0 0 30px; color: var(--muted); font-size: clamp(1.08rem, 2vw, 1.28rem); }
.button-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 1px solid var(--brand);
  border-radius: 12px;
  color: #fff;
  background: var(--brand);
  text-decoration: none;
  font-weight: 800;
}
.button:hover { color: #fff; background: var(--brand-dark); }
.button.secondary { color: var(--brand); background: transparent; }
.button.secondary:hover { color: var(--brand-dark); background: var(--surface-strong); }
.hero-card, .card, .article-card, .notice {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}
.hero-card, .card, .article-card { padding: 28px; }
.hero-card ol { margin: 22px 0 0; padding: 0; list-style: none; counter-reset: steps; }
.hero-card li { position: relative; padding: 0 0 22px 48px; counter-increment: steps; }
.hero-card li:last-child { padding-bottom: 0; }
.hero-card li::before {
  position: absolute;
  top: -2px;
  left: 0;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  content: counter(steps);
  color: #fff;
  background: var(--accent);
  font-weight: 850;
}
.notice { padding: 20px 24px; border-color: var(--warning-line); background: var(--warning); box-shadow: none; }
.notice strong { display: block; margin-bottom: 4px; }
.section { padding-block: 82px; }
.section.compact { padding-block: 58px; }
.section.tint { background: var(--surface); }
.section-heading { max-width: 790px; margin-bottom: 34px; }
.section-heading p, .card p, .article-card p, .prose p, .prose li { color: var(--muted); }
.grid-2, .grid-3, .guide-grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3, .guide-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.article-card { display: flex; flex-direction: column; }
.article-card .text-link { margin-top: auto; padding-top: 12px; }
.text-link { font-weight: 800; text-underline-offset: 4px; }
.check-list, .content-list { margin: 0; padding-left: 1.25rem; }
.check-list li, .content-list li { margin-block: 9px; }
.fact-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}
.fact { padding: 24px; background: var(--paper); }
.fact strong { display: block; margin-bottom: 4px; font-size: 1.08rem; }
.fact span { color: var(--muted); }
.official-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.official-links a {
  display: block;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--ink);
  background: var(--paper);
  text-decoration: none;
  font-weight: 800;
}
.official-links a span { display: block; margin-top: 5px; color: var(--muted); font-size: .9rem; font-weight: 500; }
.article-hero { padding-block: 76px 52px; background: linear-gradient(145deg, var(--surface), #f9fbfb); }
.article-hero .content { max-width: 900px; }
.article-meta { color: var(--muted); font-size: .92rem; }
.prose { max-width: 840px; margin-inline: auto; padding-block: 62px 90px; font-size: 1.06rem; }
.prose h2 { margin-top: 48px; font-size: clamp(1.75rem, 3vw, 2.35rem); }
.prose h3 { margin-top: 30px; }
.prose .notice { margin-block: 28px; }
.prose table { width: 100%; margin-block: 26px; border-collapse: collapse; font-size: .96rem; }
.prose th, .prose td { padding: 13px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { color: var(--ink); background: var(--surface); }
.site-footer { color: #dbe9e7; background: var(--brand-dark); }
.footer-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 50px; padding-block: 52px; }
.footer-inner a { color: #fff; }
.footer-nav { display: flex; flex-wrap: wrap; align-content: start; gap: 12px 20px; }
.fine-print { color: #b8ceca; font-size: .88rem; }

@media (max-width: 860px) {
  .nav-links a:not(.nav-cta) { display: none; }
  .hero-grid, .grid-2, .grid-3, .guide-grid, .fact-strip, .official-links, .footer-inner { grid-template-columns: 1fr; }
  .hero-grid { min-height: auto; gap: 34px; padding-block: 62px; }
}
@media (max-width: 520px) {
  .content, .header-inner, .footer-inner { width: min(calc(100% - 24px), var(--content)); }
  .header-inner { min-height: 66px; }
  h1 { font-size: 2.55rem; }
  .section { padding-block: 62px; }
  .hero-card, .card, .article-card { padding: 22px; }
}