* {
    margin: 0; 
    padding: 0; 
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
  }
  
  body { background: #e9f7ff; }
  
  /* HEADER */
  header {
    background: #009fe3;
    color: white;
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  header .logo { font-size: 1.6em; font-weight: bold; }
  
  nav ul { 
    display: 
    flex; gap: 
    30px; list-style: none; }
    nav a { color: white; text-decoration: none; font-weight: bold; }
  
  /* VOLTAR */
  .btn-voltar {
    display: inline-flex; 
    align-items: center;
    background: #009fe3; 
    color: white;
    padding: 20px 18px; 
    border-radius: 6px;
    margin: 20px; 
    text-decoration: none;
  }
  .setina {
    width: 0;
    height: 0;
    border-top: 7px solid transparent;
    border-bottom: 7px solid transparent;
    border-right: 10px solid white;
  }
  
  /* BANNER */
  .banner {
    background: url('6.png') center/cover no-repeat;
    padding: 170px 30px; 
    text-align: center;
    color: white; 
    background-blend-mode: darken;
    background-color: rgba(0,0,0,0.4);
  }
  .banner .btn {
    background: #007bb8; 
    color: white;
    padding: 10px 20px; 
    border-radius: 8cap;
  }
  
  /* PRODUTOS */
  .produtos { padding: 60px 40px; 
    text-align: center; }
  .grid {
    display: grid; 
    gap: 25px;
    grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
  }
  .card {
    background: white; 
    border-radius: 10px;
    padding: 18px; 
    text-align: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  }
  .card img {
    width: 100%; 
    height: 180px;
    border-radius: 10px; 
    object-fit: cover;
  }
  button {
    margin-top: 10px; 
    background: #009fe3;
    border: none; 
    color: white; 
    padding: 10px;
    border-radius: 8px; 
    cursor: pointer;
  }
  footer {
    background: #009fe3; 
    color: white;
    text-align: center; 
    padding: 22px;
  }