<style>
        body {
            font-family: sans-serif;
            padding: 30px;
            background-color: #f8f9fb;
        }
        input[type="text"] {
            font-size: 1.2em;
            padding: 10px;
            width: 280px;
        }
        button {
            font-size: 1.1em;
            padding: 10px 16px;
            margin-left: 10px;
            background-color: #007BFF;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        }
        button:hover {
            opacity: 0.85;
        }
        .lca-button {
            background-color: #28a745;
            font-size: 1.2em;
            padding: 12px 24px;
            margin-top: 20px;
        }
        select {
            font-size: 1.1em;
            padding: 6px;
            width: 320px;
            margin-top: 10px;
        }
        .list0 {
            background-color: #000000;
            color: #ffffff;
            padding: 10px;
            border-radius: 4px;
            font-family: monospace;
        }


  body {
    font-family: 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
    background: #f9f9f9;
    color: #333;
    margin: 0;
    padding: 2em;
  }

  h1 {
    text-align: center;
    font-size: 2em;
    margin-bottom: 1em;
    color: #005a9c;
  }

  form {
    background: #fff;
    border: 1px solid #ddd;
    padding: 2em;
    border-radius: 8px;
    max-width: 500px;
    margin: 0 auto 2em;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
  }

  label {
    display: block;
    margin-bottom: 0.5em;
    font-weight: bold;
  }

  select,
  input[type="submit"] {
    width: 100%;
    padding: 0.8em;
    margin-bottom: 1em;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
  }

  input[type="submit"] {
    background-color: #007acc;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease-in-out;
  }

  input[type="submit"]:hover {
    background-color: #005f99;
  }

  h2 {
    text-align: center;
    margin-top: 2em;
    color: #444;
  }

  pre {
    background: #272822;
    color: #f8f8f2;
    padding: 1em;
    border-radius: 6px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
  }

  a {
    display: block;
    margin: 1em auto;
    text-align: center;
    color: #007acc;
    text-decoration: none;
    font-weight: bold;
  }

  a:hover {
    text-decoration: underline;
  }
  button#runCalculation {
  display: block;
  margin: 2em auto;
  padding: 1em 2em;
  background-color: #28a745;
  border: none;
  color: white;
  font-size: 1.2em;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.2s ease-in-out;
}

button#runCalculation:hover {
  background-color: #218838;
}

#calcOutput {
  background: #f1f1f1;
  padding: 1em;
  border-radius: 8px;
  margin-top: 2em;
  white-space: pre-wrap;
  font-size: 0.95em;
  line-height: 1.5;
}

</style>
