* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  line-height: 1.6;
  color: #333;
  background-color: #f9f9f9;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 2rem;
  background: #ffffff;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.nav-links a {
  text-decoration: none;
  color: #555;
  font-weight: 500;
}

.hero {
  text-align: center;
  padding: 5rem 1rem;
  background: #ffffff;
  border-bottom: 1px solid #eaeaea;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: #111;
}

.hero p {
  color: #666;
  margin-bottom: 1.5rem;
}

.features {
  padding: 4rem 2rem;
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: #ffffff;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.btn {
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  background-color: #2563eb;
  color: #fff;
  font-weight: 600;
}

.btn:hover {
  background-color: #1d4ed8;
}

footer {
  text-align: center;
  padding: 2rem;
  background: #111;
  color: #888;
}