* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: #122033;
  background: #f7f9fc;
  line-height: 1.6;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 7%;
  background: #ffffff;
  border-bottom: 1px solid #e6eaf0;
  position: sticky;
  top: 0;
}

.brand {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

nav a {
  margin-left: 22px;
  color: #122033;
  text-decoration: none;
  font-weight: 600;
}

.hero {
  padding: 90px 7%;
  max-width: 980px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: #4a6cf7;
}

h1 {
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 1.02;
  margin: 0 0 24px;
  letter-spacing: -0.06em;
}

.lead {
  font-size: 1.25rem;
  max-width: 680px;
  color: #4b5b70;
}

.button {
  display: inline-block;
  margin-top: 20px;
  padding: 14px 22px;
  border-radius: 12px;
  background: #122033;
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
}

.section {
  padding: 64px 7%;
  background: #ffffff;
  border-top: 1px solid #e6eaf0;
}

.section h2 {
  font-size: 2rem;
  margin-top: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

article, .card {
  padding: 24px;
  border: 1px solid #e6eaf0;
  border-radius: 18px;
  background: #f7f9fc;
}

article h3 {
  margin-top: 0;
}

.split {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

.contact a {
  color: #122033;
  font-weight: 700;
}

footer {
  padding: 28px 7%;
  color: #6b7788;
}

@media (max-width: 850px) {
  .header {
    display: block;
  }

  nav {
    margin-top: 14px;
  }

  nav a {
    margin-left: 0;
    margin-right: 16px;
  }

  .grid, .split {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 64px;
  }
}