:root {
  color-scheme: light;
  --ink: #13223f;
  --muted: #60708d;
  --blue: #5678ef;
  --blue-dark: #315bd7;
  --pale: #eef4ff;
  --line: #dfe7f4;
  --white: #ffffff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #f7f9fd;
  color: var(--ink);
  line-height: 1.65;
}

a {
  color: var(--blue-dark);
}

.shell {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
}

header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 760;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 20px;
  font-size: 0.92rem;
}

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

main {
  padding: 56px 0 72px;
}

.hero,
.document {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: 0 20px 70px rgba(35, 61, 121, 0.08);
}

.hero {
  padding: clamp(32px, 7vw, 72px);
  background:
    radial-gradient(circle at 92% 12%, rgba(86, 120, 239, 0.18), transparent 34%),
    var(--white);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue-dark);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0 0 18px;
  font-size: clamp(2.2rem, 7vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.lede {
  max-width: 700px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 2.2vw, 1.22rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 999px;
  background: var(--blue);
  color: var(--white);
  font-weight: 750;
  text-decoration: none;
}

.button.secondary {
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 18px;
}

.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--white);
}

.card h2 {
  margin: 0 0 8px;
  font-size: 1.08rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.document {
  padding: clamp(26px, 6vw, 64px);
}

.document h1 {
  font-size: clamp(2rem, 5vw, 3.7rem);
}

.document h2 {
  margin: 42px 0 10px;
  font-size: 1.32rem;
}

.document p,
.document li {
  color: #334563;
}

.meta {
  margin: 0 0 36px;
  padding: 18px 20px;
  border-radius: 16px;
  background: var(--pale);
  color: var(--muted);
}

footer {
  padding: 28px 0 42px;
  color: var(--muted);
  font-size: 0.88rem;
}

@media (max-width: 720px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 0;
  }

  .cards {
    grid-template-columns: 1fr;
  }
}