body {
  font-family: 'Arial', sans-serif;
  padding: 20px;
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.6;
}

h1 {
  color: #003366;
  text-align: center;
}

h2 {
  color: #004080;
  border-bottom: 2px solid #004080;
  padding-bottom: 5px;
  margin-top: 30px;
}

h3 {
  color: #0066cc;
  margin-top: 20px;
}

h4 {
  color: #0099cc;
  margin-top: 15px;
  margin-left: 20px;
}

.vocab-table {
  width: 100%;
  border-collapse: collapse;
  margin: 15px 0;
}

.vocab-table td {
  padding: 8px;
  border-bottom: 1px solid #ddd;
}

.vocab-table td:first-child {
  font-weight: bold;
  width: 40%;
  font-family: 'Myanmar Text', 'Noto Sans Myanmar', sans-serif;
}

.vocab-table td:last-child {
  color: #333;
}

.audio-block {
  background: #f5f5f5;
  padding: 10px;
  margin: 15px 0;
  border-radius: 5px;
}

audio {
  width: 100%;
  margin: 5px 0;
}

.note {
  font-style: italic;
  color: #666;
  margin: 10px 0;
  padding: 10px;
  background: #f9f9f9;
  border-left: 3px solid #999;
}

.karen {
  font-family: 'Myanmar Text', 'Noto Sans Myanmar', sans-serif;
  font-size: 1.2em;
}

.command-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 10px 0;
}

.command-item {
  background: #f0f0f0;
  padding: 8px;
  border-radius: 3px;
}

.drill-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 10px 0;
}

.conversation-item {
  margin: 15px 0;
  padding: 10px;
  background: #f9f9f9;
  border-left: 3px solid #0066cc;
}

.loading {
  text-align: center;
  padding: 50px;
  color: #666;
}

.error {
  color: red;
  text-align: center;
  padding: 20px;
  background: #ffe0e0;
  border-radius: 5px;
}

.part-badge {
  display: inline-block;
  background: #e0e0e0;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.8em;
  margin-right: 10px;
}

.ts-table {
  width: 100%;
  margin: 15px 0;
  border-collapse: collapse;
}

.ts-table td {
  padding: 8px;
  border-bottom: 1px solid #eee;
  vertical-align: top;
}

.ts-table td:first-child {
  width: 30px;
  font-weight: bold;
  color: #0066cc;
}

.ts-table tr:last-child td {
  border-bottom: none;
}

.qa-table {
  width: 100%;
  margin: 15px 0;
  border-collapse: collapse;
}

.qa-table td {
  padding: 8px;
  border-bottom: 1px solid #eee;
  vertical-align: top;
}

.qa-table td:first-child {
  width: 30px;
  font-weight: bold;
  color: #0066cc;
}

.pronunciation-table {
  width: 100%;
  margin: 15px 0;
  border-collapse: collapse;
}

.pronunciation-table th {
  background: #f0f0f0;
  padding: 8px;
  text-align: left;
  font-weight: normal;
  color: #666;
}

.pronunciation-table td {
  padding: 8px;
  border-bottom: 1px solid #eee;
}

.pronunciation-table td.karen {
  font-size: 1.2em;
}

.drill-item {
  margin: 10px 0;
  padding: 8px;
  background: #f9f9f9;
  border-left: 3px solid #0066cc;
}

.note-small {
  font-size: 0.8em;
  color: #666;
  margin-left: 5px;
}

.number-list {
  font-size: 1.2em;
  margin: 15px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.karen-number {
  font-family: 'Myanmar Text', 'Noto Sans Myanmar', sans-serif;
  background: #f0f0f0;
  padding: 5px 10px;
  border-radius: 5px;
}

.drill-sequence {
  margin: 15px 0;
}

.drill-step {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px;
  border-bottom: 1px solid #eee;
}

.drill-step .karen {
  font-size: 1.1em;
}

.drill-next {
  font-family: monospace;
  color: #666;
  background: #f0f0f0;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.9em;
}