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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
  padding: 40px 0;
}

header {
  background: #1f3d2b;
  color: white;
}

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

.logo {
  font-size: 1.3rem;
}

.btn {
  background: #2e7d32;
  color: white;
  padding: 12px 20px;
  text-decoration: none;
  border-radius: 5px;
  display: inline-block;
  margin-top: 10px;
}

.btn:hover {
  background: #256628;
}

.secondary {
  background: #555;
}

.hero {
  background: url("https://images.unsplash.com/photo-1501004318641-b39e6451bec6") center/cover no-repeat;
  color: white;
  text-align: center;
  padding: 120px 20px;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.hero-buttons .btn {
  margin: 10px;
}

.services h3,
.why-us h3,
.contact h3 {
  text-align: center;
  margin-bottom: 30px;
  font-size: 2rem;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  background: #f4f4f4;
  padding: 20px;
  border-radius: 8px;
}

.why-us {
  background: #f9f9f9;
}

.why-us ul {
  list-style: none;
  margin-top: 20px;
}

.why-us li {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.contact form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  max-width: 600px;
  margin: auto;
}

.contact input,
.contact textarea {
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

footer {
  background: #1f3d2b;
  color: white;
  text-align: center;
  padding: 20px;
}