:root {
  --black: #0b0b0b;
  --white: #ffffff;
  --soft: #f4f4f1;
  --grey: #666666;
  --border: #d8d8d2;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, Helvetica, Arial, sans-serif;
  background: var(--soft);
  color: var(--black);
  line-height: 1.6;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 8%;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

nav a {
  margin-left: 28px;
  text-decoration: none;
  color: var(--black);
  font-size: 0.95rem;
}

nav a:hover {
  text-decoration: underline;
}

.hero {
  padding: 120px 8% 100px;
  max-width: 980px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  color: var(--grey);
  margin-bottom: 20px;
}

h1 {
  font-size: clamp(3rem, 8vw, 6.5rem);
  line-height: 0.95;
  letter-spacing: -0.07em;
  margin: 0 0 32px;
}

.hero-copy {
  max-width: 680px;
  font-size: 1.35rem;
  color: #222;
  margin-bottom: 36px;
}

.button {
  display: inline-block;
  background: var(--black);
  color: var(--white);
  padding: 14px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
}

.button:hover {
  opacity: 0.85;
}

.section {
  padding: 90px 8%;
  border-top: 1px solid var(--border);
}

.section h2 {
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1;
  letter-spacing: -0.05em;
  margin: 0 0 28px;
  max-width: 800px;
}

.section p {
  max-width: 720px;
  font-size: 1.15rem;
  color: #222;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 42px;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 32px;
  min-height: 260px;
}

.card h3 {
  font-size: 1.6rem;
  margin-top: 0;
  letter-spacing: -0.04em;
}

.dark {
  background: var(--black);
  color: var(--white);
}

.dark h2,
.dark p {
  color: var(--white);
}

.dark ul {
  padding-left: 20px;
  font-size: 1.2rem;
  max-width: 760px;
}

.dark li {
  margin-bottom: 12px;
}

.contact {
  text-align: left;
}

footer {
  padding: 36px 8%;
  color: var(--grey);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
}

@media (max-width: 800px) {
  .site-header {
    display: block;
  }

  nav {
    margin-top: 16px;
  }

  nav a {
    margin-left: 0;
    margin-right: 18px;
  }

  .hero {
    padding-top: 80px;
  }

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