body {
  font-family: -apple-system, "Segoe UI", "Hiragino Sans", sans-serif;
  margin: 0;
  padding: 0;
  background: #f4f5f7;
  color: #1f2328;
}

header {
  background: #1f2937;
  color: #fff;
  padding: 16px 24px;
}

header h1 {
  margin: 0 0 8px;
  font-size: 20px;
}

.disclaimer {
  margin: 0;
  font-size: 13px;
  color: #d1d5db;
  border-left: 3px solid #f59e0b;
  padding-left: 8px;
}

main {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.panel {
  background: #fff;
  border-radius: 8px;
  padding: 16px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.hint {
  color: #6b7280;
  font-size: 13px;
}

button {
  background: #2563eb;
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 14px;
}

button:hover {
  background: #1d4ed8;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
}

th, td {
  border: 1px solid #e5e7eb;
  padding: 8px;
  font-size: 13px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #f9fafb;
}

textarea {
  width: 260px;
  height: 80px;
  font-family: monospace;
  font-size: 12px;
  display: block;
  margin-bottom: 6px;
}

#batch-result {
  background: #f9fafb;
  padding: 8px;
  border-radius: 4px;
  font-size: 12px;
  white-space: pre-wrap;
}