* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: Arial, sans-serif;
  background: #f4f7f6;
  color: #333;
  line-height: 1.6;
}
.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}
.header {
  background: #0d9b6a;
  color: white;
  padding: 30px 0;
  text-align: center;
}
.navbar {
  background: #0b7c55;
  padding: 12px 0;
}
.nav-links a {
  color: white;
  margin: 0 18px;
  text-decoration: none;
  font-weight: bold;
}
.hero {
  background: white;
  padding: 80px 20px;
  text-align: center;
}
.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 22px;
  background: #0d9b6a;
  color: white;
  border-radius: 6px;
  text-decoration: none;
}
.section {
  padding: 50px 20px;
  background: white;
  margin-top: 30px;
  border-radius: 10px;
}
.section.light {
  background: #e8f5f1;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 20px;
}
.card {
  background: #ffffff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.footer {
  margin-top: 50px;
  background: #0d9b6a;
  color: white;
  text-align: center;
  padding: 20px;
}