:root {
  --primary: #3b82f6;
  --primary-foreground: #ffffff;
  --background: #ffffff;
  --foreground: #000000;
  --muted: #f3f4f6;
  --muted-foreground: #6b7280;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  color: var(--foreground);
  background-color: var(--background);
  margin: 0;
  padding: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

header {
  background-color: var(--background);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 50;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.logo {
  font-weight: bold;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
}

.logo img {
  margin-right: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--foreground);
  text-decoration: none;
  font-size: 0.875rem;
}

.btn {
  background-color: var(--primary);
  color: var(--primary-foreground);
  padding: 0.5rem 1rem;
  border-radius: 0.25rem;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  display: inline-block;
}

.hero {
  text-align: center;
  padding: 4rem 0;
  background-color: var(--muted);
}

h1 {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.25rem;
  color: var(--muted-foreground);
  max-width: 600px;
  margin: 0 auto 2rem;
}

section {
  padding: 4rem 0;
}

h2 {
  font-size: 2.25rem;
  text-align: center;
  margin-bottom: 2rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background-color: var(--background);
  border-radius: 0.5rem;
  padding: 1.5rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

footer {
  background-color: var(--background);
  border-top: 1px solid var(--muted);
  padding: 1.5rem 0;
  text-align: center;
}

footer p {
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  h1 {
    font-size: 2.25rem;
  }

  .hero p {
    font-size: 1rem;
  }

  h2 {
    font-size: 1.875rem;
  }
}