:root {
  color-scheme: dark;
  --bg: #08111f;
  --panel: #0f1b2d;
  --panel-soft: #13243b;
  --text: #f5f7fb;
  --muted: #aab7ca;
  --accent: #8bd3ff;
  --accent-strong: #49b9f2;
  --border: #253a56;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #112744 0, var(--bg) 38rem);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--accent); }
a:hover { color: #c3ebff; }

.wrap { width: min(calc(100% - 2rem), var(--max)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(8, 17, 31, 0.84);
  border-bottom: 1px solid rgba(139, 211, 255, 0.12);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: .01em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(139, 211, 255, .5);
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: var(--accent);
  background: linear-gradient(145deg, rgba(139,211,255,.16), rgba(139,211,255,.03));
}

.nav-links { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.nav-links a { color: var(--muted); text-decoration: none; font-weight: 600; }
.nav-links a:hover { color: var(--text); }

.hero { padding: 7rem 0 5rem; }
.eyebrow {
  color: var(--accent);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .8rem;
}

h1, h2, h3 { line-height: 1.12; }
h1 { font-size: clamp(2.7rem, 7vw, 5.4rem); margin: .65rem 0 1.2rem; max-width: 900px; }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); margin-top: 0; }
h3 { margin-bottom: .5rem; }
p { color: var(--muted); }
.lead { font-size: clamp(1.08rem, 2vw, 1.3rem); max-width: 760px; }

.actions { display: flex; gap: .9rem; flex-wrap: wrap; margin-top: 2rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  text-decoration: none;
  font-weight: 800;
  color: var(--text);
  background: var(--panel);
}
.button.primary { color: #04111a; background: var(--accent); border-color: var(--accent); }
.button.primary:hover { background: #b9e9ff; color: #04111a; }

.section { padding: 4.5rem 0; }
.section.alt { background: rgba(15, 27, 45, .62); border-block: 1px solid rgba(139, 211, 255, .09); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card {
  background: linear-gradient(180deg, rgba(19,36,59,.95), rgba(15,27,45,.95));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.25rem;
}
.card p { margin-bottom: 0; }

.notice {
  border-left: 3px solid var(--accent);
  background: rgba(139, 211, 255, .08);
  padding: 1rem 1.15rem;
  border-radius: 0 12px 12px 0;
}

.prose { width: min(100%, 820px); }
.prose h2 { margin-top: 2.5rem; font-size: 1.55rem; }
.prose h3 { margin-top: 1.7rem; }
.prose li { color: var(--muted); margin-bottom: .45rem; }
.prose strong { color: var(--text); }

.site-footer { border-top: 1px solid var(--border); padding: 2rem 0 3rem; color: var(--muted); }
.footer-row { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.footer-links { display: flex; gap: 1rem; flex-wrap: wrap; }
.footer-links a { color: var(--muted); }

@media (max-width: 760px) {
  .grid { grid-template-columns: 1fr; }
  .nav { align-items: flex-start; padding: 1rem 0; }
  .nav-links { justify-content: flex-end; }
  .hero { padding-top: 4rem; }
}