:root {
  --max-width: 920px;
  --text: #181818;
  --muted: #666;
  --border: #ddd;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.6;
}

main,
footer {
  width: min(var(--max-width), calc(100% - 48px));
  margin: 0 auto;
}

header {
  padding: 100px 0 80px;
}

.eyebrow {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1 {
  max-width: 850px;
  margin: 16px 0 24px;
  font-size: clamp(2.7rem, 7vw, 5.5rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.intro {
  max-width: 700px;
  font-size: 1.3rem;
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 20px;
  margin-top: 36px;
  align-items: center;
}

a {
  color: inherit;
}

.primary {
  display: inline-block;
  padding: 12px 18px;
  border: 1px solid var(--text);
  text-decoration: none;
  font-weight: 600;
}

section {
  padding: 56px 0;
  border-top: 1px solid var(--border);
}

h2 {
  margin-top: 0;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h3 {
  font-size: 1.6rem;
}

.principles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
}

footer {
  margin-top: 40px;
  padding: 32px 0 60px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 650px) {
  header {
    padding-top: 70px;
  }

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

  .actions {
    align-items: flex-start;
    flex-direction: column;
  }
}