:root {
  --primary-color: #3498db;
  --secondary-color: #2ecc71;
  --text-color: #2c3e50;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial,
    sans-serif;
  line-height: 1.6;
  color: var(--text-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  background-color: var(--primary-color);
  color: white;
  padding: 1rem 0;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: bold;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: white;
  text-decoration: none;
  transition: opacity 0.3s;
}

.nav-links a:hover {
  opacity: 0.8;
}

main {
  padding: 2rem 0;
}

.hero {
  text-align: center;
  padding: 3rem 0;
}

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

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  padding: 2rem 0;
}

.feature-card {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.counter-section {
  text-align: center;
  padding: 2rem 0;
  background-color: #f8f9fa;
}

#counter {
  font-size: 2rem;
  font-weight: bold;
  color: var(--primary-color);
}

button {
  background-color: var(--secondary-color);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #27ae60;
}

footer {
  background-color: #2c3e50;
  color: white;
  padding: 1rem 0;
  text-align: center;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .nav-links {
    gap: 1rem;
  }

  .hero h1 {
    font-size: 2rem;
  }
}