* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #121212;
  background: #f7f5f0;
  line-height: 1.6;
}

a {
  color: inherit;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.narrow {
  max-width: 720px;
}

.site-header {
  background: #101820;
  color: white;
  padding: 18px 0;
}

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

.nav nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
}

.nav a {
  text-decoration: none;
  opacity: 0.88;
}

.hero {
  padding: 90px 0;
  background: linear-gradient(135deg, #101820, #243447);
  color: white;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 13px;
  opacity: 0.8;
}

h1 {
  font-size: clamp(42px, 9vw, 78px);
  line-height: 0.95;
  max-width: 850px;
  margin: 10px 0 22px;
}

h2 {
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.05;
  margin: 0 0 24px;
}

h3 {
  margin-top: 0;
  font-size: 22px;
}

.lead {
  font-size: 21px;
  max-width: 680px;
  color: #e9edf1;
}

.button {
  display: inline-block;
  margin-top: 18px;
  background: #f2c14e;
  color: #101820;
  padding: 14px 20px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

.section {
  padding: 70px 0;
}

.muted {
  background: #ebe7dc;
}

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

.card {
  background: white;
  border-radius: 20px;
  padding: 26px;
  box-shadow: 0 10px 30px rgba(16, 24, 32, 0.08);
}

.checklist {
  background: white;
  border-radius: 20px;
  padding: 28px 36px;
  max-width: 640px;
}

.site-footer {
  background: #101820;
  color: #cbd5df;
  padding: 28px 0;
  font-size: 14px;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .hero {
    padding: 70px 0;
  }
}