* {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background-color: #f5f5f5;
    color: #333;
  }
  
  .container {
    max-width: 500px;
    margin: 60px auto;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
  }
  
  h1 {
    font-size: 24px;
    margin-bottom: 10px;
    color: #6b4c3b;
  }
  
  h2 {
    font-size: 16px;
    color: #999;
    margin-bottom: 30px;
  }
  
  form {
    display: flex;
    flex-direction: column;
    gap: 15px;
  }
  
  input,
  select,
  button {
    padding: 12px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 10px;
  }
  
  button {
    background-color: #6b4c3b;
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  button:hover {
    background-color: #8b5c45;
  }
  
  #result {
    margin-top: 20px;
    font-size: 18px;
    color: #444;
    font-weight: bold;
  }
  
  @media (max-width: 480px) {
    .container {
      margin: 20px;
      padding: 20px;
    }
  }