body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f2f9f1;
}
header {
  background: #2e7d32;
  color: white;
  padding: 20px;
  text-align: center;
  position: relative;
}
.banner-img {
  width: 100%;
  height: auto;
  max-height: 200px;
  object-fit: cover;
  border-bottom: 4px solid #1b5e20;
}
header h1 {
  margin: 10px 0 5px 0;
  font-size: 2.5em;
}
.presentation {
  background: #d0e8d0;
  text-align: center;
  padding: 30px 20px;
}
.presentation p {
  margin: 0;
  font-size: 1.2em;
  color: #333;
}
main {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 60vh;
  padding: 40px 20px;
}
form {
  background: white;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  width: 100%;
  max-width: 400px;
  margin-bottom: 20px;
}
form h2 {
  margin-top: 0;
  margin-bottom: 20px;
  color: #2e7d32;
}
input {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
}
button {
  background: #2e7d32;
  color: white;
  border: none;
  padding: 12px;
  width: 100%;
  border-radius: 4px;
  font-size: 1em;
  cursor: pointer;
}
button:hover {
  background: #1b5e20;
}
.whatsapp-btn {
  display: inline-block;
  background: #25D366;
  color: white;
  text-decoration: none;
  padding: 12px 20px;
  border-radius: 4px;
  font-weight: bold;
  margin-top: 10px;
}
.avantages {
  background: #f1f8f1;
  padding: 30px 20px;
  max-width: 600px;
  text-align: left;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.avantages h2 {
  margin-top: 0;
  color: #2e7d32;
}
.avantages ul {
  list-style: none;
  padding: 0;
}
.avantages li {
  margin: 10px 0;
  font-size: 1.1em;
}
footer {
  text-align: center;
  padding: 20px;
  color: #555;
  font-size: 0.9em;
}