t" href="./styles/spectre-icons.min.css">

  <!-- Noto Sans TC -->
  <link href="https://fonts.googleapis.com/css?family=Noto+Sans+TC" rel="stylesheet">

  <!-- theme css & js -->
  <link rel="stylesheet" href="./styles/spectre_custom.css">
  <link rel="stylesheet" href="./styles/book.css">
  <script src="./scripts/book.js"></script>

  <!-- tocbot -->
  <script src="./scripts/tocbot.min.js"></script>
  <link rel="stylesheet" href="./styles/tocbot.css">

  <!-- highlight.js -->
  <link rel="stylesheet" href