body {
  font-family: "Noto Sans JP", sans-serif;
  margin: 0;
  padding: 2rem;
  background: #f9f9f9;
  color: #333;
  line-height: 1.6;
}

h1 {
  font-size: 2em;
  color: #004080;
  margin-bottom: 1rem;
  border-bottom: 4px solid #004080;
  padding-bottom: 0.3rem;
}

h2 {
  font-size: 1.5em;
  margin-top: 2rem;
  color: #006699;
  border-left: 5px solid #ccc;
  padding-left: 0.5rem;
}

a {
  color: #007acc;
  text-decoration: none;
  font-weight: bold;
}
a:hover {
  text-decoration: underline;
}

blockquote#lyric {
  background: #fff;
  border-left: 5px solid #007acc;
  padding: 1rem;
  margin: 1rem 0;
  white-space: pre-wrap;
  font-family: "Courier New", monospace;
  font-size: 1.1rem;
  background: #f0f8ff;
}

csv-viewer {
  display: block;
  margin-top: 1rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  overflow-x: auto;
  background: #fff;
  padding: 1rem;
  box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}