* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #1a1a1a;
  background: #fff;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

header {
  border-bottom: 1px solid #e5e5e5;
  padding: 16px 0;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 600;
  font-size: 1.25rem;
}

nav a {
  margin-left: 24px;
  color: #333;
  text-decoration: none;
  font-size: 0.95rem;
}

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

.hero {
  padding: 80px 0 60px;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 16px;
}

.lead {
  font-size: 1.2rem;
  color: #444;
  max-width: 640px;
}

.section {
  padding: 60px 0;
}

.section.alt {
  background: #f8f9fa;
}

.section h2 {
  font-size: 1.75rem;
  margin-bottom: 32px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  padding: 24px;
  background: #fff;
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.card p {
  color: #333;
  font-size: 0.95rem;
}

footer {
  border-top: 1px solid #e5e5e5;
  padding: 24px 0;
  font-size: 0.9rem;
  color: #666;
}

@media (max-width: 600px) {
  .hero h1 {
    font-size: 2rem;
  }
  header .container {
    flex-direction: column;
    align-items: flex-start;
  }
  nav {
    margin-top: 12px;
  }
  nav a {
    margin-left: 0;
    margin-right: 16px;
  }
}