:root {
  --bg: #071225;
  --bg-soft: #0d1b35;
  --surface: rgba(255,255,255,.055);
  --surface-strong: #142541;
  --ink: #f4f7ff;
  --muted: #b9c4db;
  --line: rgba(255,255,255,.13);
  --accent: #59d7f2;
  --accent-2: #70ebbd;
  --max: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(900px 540px at 8% -8%, #193056 0%, transparent 64%),
    radial-gradient(720px 420px at 92% 10%, rgba(28,99,123,.28) 0%, transparent 70%),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}
a { color: var(--accent); text-underline-offset: .2em; }
a:hover { color: #9cecff; }
a:focus-visible, summary:focus-visible {
  outline: 3px solid var(--accent-2);
  outline-offset: 4px;
  border-radius: 4px;
}
img { max-width: 100%; }
.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 20;
  padding: 10px 14px;
  color: var(--ink);
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.skip-link:focus { top: 14px; }
.shell { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(7,18,37,.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-name {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -.02em;
  text-decoration: none;
  white-space: nowrap;
}
.primary-nav { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.primary-nav a {
  color: var(--muted);
  padding: 8px 10px;
  font-size: .94rem;
  font-weight: 650;
  text-decoration: none;
  border-radius: 10px;
}
.primary-nav a:hover { color: var(--ink); background: var(--surface); }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid rgba(89,215,242,.38);
  border-radius: 999px;
  background: rgba(89,215,242,.11);
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
}
.button:hover { color: var(--ink); background: rgba(89,215,242,.19); }
.button.secondary { border-color: var(--line); background: var(--surface); }
.hero { padding: 88px 0 46px; }
.hero-grid { display: grid; grid-template-columns: minmax(0,1.35fr) minmax(280px,.65fr); gap: 48px; align-items: end; }
.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-2);
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}
h1, h2, h3 { line-height: 1.15; letter-spacing: -.025em; }
h1 { max-width: 900px; margin: 0 0 22px; font-size: clamp(2.4rem, 6vw, 4.75rem); }
h2 { margin: 0 0 16px; font-size: clamp(1.65rem, 3vw, 2.45rem); }
h3 { margin: 0 0 10px; font-size: 1.15rem; }
.lead { max-width: 790px; margin: 0; color: var(--muted); font-size: clamp(1.08rem, 2vw, 1.3rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-note {
  padding: 20px;
  background: linear-gradient(145deg, rgba(89,215,242,.10), rgba(112,235,189,.05));
  border: 1px solid var(--line);
  border-radius: 20px;
}
.hero-note strong { display: block; margin-bottom: 7px; font-size: 1.05rem; }
.hero-note p { margin: 0; color: var(--muted); }
.proof-strip {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: var(--surface);
}
.proof { padding: 18px; }
.proof + .proof { border-left: 1px solid var(--line); }
.proof b { display: block; color: var(--accent); font-size: 1.25rem; }
.proof span { color: var(--muted); font-size: .9rem; }
.section { padding: 72px 0; }
.section.compact { padding-top: 34px; }
.section-head { max-width: 790px; margin-bottom: 28px; }
.section-head p { margin: 0; color: var(--muted); font-size: 1.05rem; }
.grid { display: grid; gap: 18px; }
.grid.two { grid-template-columns: repeat(2,minmax(0,1fr)); }
.grid.three { grid-template-columns: repeat(3,minmax(0,1fr)); }
.grid.four { grid-template-columns: repeat(4,minmax(0,1fr)); }
.card {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
}
.card p { margin: 0; color: var(--muted); }
.card p + p, .card ul + p { margin-top: 12px; }
.card ul, .article ul, .article ol { padding-left: 1.25rem; }
.card li + li, .article li + li { margin-top: 7px; }
.kicker { margin-bottom: 8px !important; color: var(--accent-2) !important; font-size: .82rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.link-card { display: block; color: inherit; text-decoration: none; transition: transform .18s ease, border-color .18s ease; }
.link-card:hover { color: inherit; border-color: rgba(89,215,242,.52); transform: translateY(-2px); }
.region-code { color: var(--accent); font-size: .8rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.source-list { margin: 0; padding-left: 1.2rem; }
.source-list li + li { margin-top: 10px; }
.callout {
  padding: 22px;
  border-left: 4px solid var(--accent-2);
  background: rgba(112,235,189,.06);
  border-radius: 0 16px 16px 0;
}
.callout p { margin: 0; }
.breadcrumbs { padding-top: 28px; color: var(--muted); font-size: .92rem; }
.breadcrumbs a { color: var(--muted); }
.article-hero { padding: 52px 0 28px; }
.article-hero h1 { max-width: 980px; font-size: clamp(2.25rem, 5vw, 4.15rem); }
.article-meta { color: var(--muted); }
.article { width: min(840px, calc(100% - 40px)); margin: 0 auto; padding: 22px 0 80px; }
.article h2 { margin-top: 52px; }
.article h3 { margin-top: 30px; }
.article p, .article li { color: #d6def0; }
.article .lead { color: var(--muted); }
.article .wide { width: min(var(--max), calc(100vw - 40px)); margin-left: 50%; transform: translateX(-50%); }
.toc { padding: 20px 24px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; }
.toc strong { display: block; margin-bottom: 8px; }
.toc ul { margin: 0; columns: 2; }
details { margin-top: 12px; padding: 16px 18px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
summary { cursor: pointer; color: var(--ink); font-weight: 750; }
details p { margin-bottom: 0; }
.cta {
  padding: 34px;
  background: linear-gradient(135deg, rgba(89,215,242,.14), rgba(112,235,189,.08));
  border: 1px solid rgba(89,215,242,.33);
  border-radius: 22px;
}
.cta p { max-width: 760px; color: var(--muted); }
.site-footer { border-top: 1px solid var(--line); }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; padding: 30px 0 48px; color: var(--muted); font-size: .9rem; }
.footer-inner p { margin: 0; }
@media (max-width: 860px) {
  .header-inner { align-items: flex-start; flex-direction: column; gap: 10px; padding: 16px 0; }
  .site-header { position: static; }
  .primary-nav { width: 100%; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 3px; }
  .hero { padding-top: 54px; }
  .hero-grid, .grid.three, .grid.four { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .proof-strip { grid-template-columns: repeat(2,1fr); }
  .proof:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .proof:nth-child(4) { border-top: 1px solid var(--line); }
}
@media (max-width: 620px) {
  .shell { width: min(100% - 28px, var(--max)); }
  .hero-grid, .grid.two, .grid.three, .grid.four { grid-template-columns: 1fr; }
  .proof-strip { grid-template-columns: 1fr; }
  .proof + .proof { border-left: 0; border-top: 1px solid var(--line); }
  .toc ul { columns: 1; }
  .footer-inner { flex-direction: column; }
  .article { width: min(100% - 28px, 840px); }
  .article .wide { width: calc(100vw - 28px); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .link-card { transition: none; }
}