:root {
  --ink: #0d1117;
  --muted: #55606e;
  --line: #d8dee6;
  --accent: #123a6b;
  --wash: #f5f7fa;
  --max: 68rem;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* header */

.site-head {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  z-index: 10;
}

.site-head .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.5rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--ink);
}

.brand span {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.95rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--muted);
}

.site-nav a:hover,
.site-nav a:focus-visible { color: var(--ink); }

/* hero */

.hero {
  padding: 5rem 0 3.5rem;
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  max-width: 24ch;
}

.hero p {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 62ch;
  margin: 0 0 2rem;
}

.cta {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 0.75rem 1.4rem;
  border-radius: 4px;
  font-weight: 600;
}

.cta.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--line);
  margin-left: 0.5rem;
}

/* sections */

section { padding: 3.5rem 0; border-bottom: 1px solid var(--line); }

h2 {
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
}

.lede { color: var(--muted); max-width: 62ch; margin: 0 0 2rem; }

.grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.card {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1.25rem;
  background: #fff;
}

.card h3 { margin: 0 0 0.5rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* capability facts */

.facts {
  background: var(--wash);
}

.facts dl {
  display: grid;
  gap: 1.25rem 2rem;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  margin: 0;
}

.facts dt {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.facts dd { margin: 0; font-weight: 600; }

.pending {
  font-weight: 400;
  color: var(--muted);
  font-style: italic;
}

ul.plain { padding-left: 1.1rem; color: var(--muted); }
ul.plain li { margin-bottom: 0.4rem; }

/* footer */

.site-foot {
  padding: 2.5rem 0 3.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-foot p { margin: 0.25rem 0; }

@media print {
  .site-head, .cta { display: none; }
  body { font-size: 11pt; }
}