:root {
  --brand: #2a78d6;
  --brand-ink: #1c5cab;
  --ink: #0b1220;
  --muted: #475569;
  --line: #e5e8ec;
  --tint: #f6f9fe;
  --card: #ffffff;
  --focus: #ffbf47;
  --font: Inter, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: #fff;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand-ink); }
a:focus-visible, .btn:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.skip { position: absolute; left: -999px; top: 8px; background: #fff; padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 5vw; border-bottom: 1px solid var(--line);
}
.logo { color: var(--ink); display: block; }
.logo svg { height: 36px; width: auto; display: block; font-family: var(--font); }
.logo .leaf { fill: var(--brand); }
nav { display: flex; gap: 22px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
nav a:hover { color: var(--ink); }

main > section { padding: 64px 5vw; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 12px; }
h1 { font-size: clamp(32px, 5vw, 54px); font-weight: 700; letter-spacing: -0.02em; max-width: 20ch; }
h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 700; letter-spacing: -0.01em; }
h3 { font-size: 18px; color: var(--brand-ink); }

.eyebrow { margin: 0 0 14px; font-size: 14px; font-weight: 600; color: var(--brand-ink); text-transform: uppercase; letter-spacing: 0.04em; }
.sub { font-size: clamp(17px, 1.6vw, 20px); color: var(--muted); max-width: 60ch; }
.note { color: var(--muted); max-width: 60ch; font-size: 15px; margin-top: 20px; }

.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.btn {
  display: inline-block; padding: 12px 20px; border-radius: 6px;
  text-decoration: none; font-weight: 600; color: var(--ink);
  border: 1.5px solid var(--line); background: #fff;
}
.btn:hover { border-color: var(--ink); }
.btn.primary { background: var(--brand-ink); border-color: var(--brand-ink); color: #fff; }
.btn.primary:hover { background: #164a8a; border-color: #164a8a; }

.features { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.cards { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); margin-top: 24px; }
.card { padding: 22px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); }
.card p { margin: 0; color: var(--muted); }
.tag { display: inline-block; margin-left: 8px; padding: 2px 8px; font-size: 12px; font-weight: 600; color: var(--brand-ink); background: var(--tint); border: 1px solid #d6e4f7; border-radius: 999px; vertical-align: middle; }

.data { background: var(--tint); }
.data p, .founders p, .contact p { max-width: 70ch; }

.foot { padding: 32px 5vw; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }
.foot p { max-width: 80ch; }
.foot a { color: var(--muted); }

.prose { max-width: 72ch; }
.prose h1 { font-size: clamp(28px, 4vw, 40px); }
.prose h2 { font-size: 22px; margin-top: 36px; }
.prose p, .prose li { color: var(--ink); }
.prose .updated { color: var(--muted); font-size: 14px; }

@media (max-width: 640px) {
  .top { flex-direction: column; align-items: flex-start; }
  main > section { padding: 44px 16px; }
  .foot { padding: 24px 16px; }
}