body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  background: #000;
  color: #fff;
  text-align: center;
}

.hero {
  position: relative;
  height: 100vh;
  background: url('https://i.imgur.com/YqfYc4J.jpg') center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.small-hero {
  height: 50vh;
}

.overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.6);
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: 3em;
  color: #25D366;
}

.btn {
  display: inline-block;
  margin: 10px;
  padding: 12px 25px;
  background: #25D366;
  color: white;
  text-decoration: none;
  font-weight: bold;
  border-radius: 30px;
  transition: 0.3s;
}

.btn:hover {
  background: #128C7E;
}

.btn.secondary {
  background: #222;
  border: 1px solid #25D366;
}

.btn.whatsapp {
  background: #128C7E;
}

.features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 25px;
  padding: 30px;
}

.feature {
  background: #111;
  border-radius: 15px;
  padding: 20px;
  width: 300px;
  box-shadow: 0 0 10px rgba(37, 211, 102, 0.3);
}

footer {
  padding: 20px;
  background: #111;
  font-size: 0.9em;
}