form {
  max-width: 900px;
  margin: 20px auto;
  background: #fff;
  border: 1px solid #ccc;
  border-radius: 6px;
  padding: 16px;
  font-family: Arial, Helvetica, sans-serif;
}
h2, h3 { color: #333; border-bottom: 1px solid #ddd; padding-bottom: 4px; }
label { display: block; font-weight: 600; margin-top: 10px; }
input[type=text], input[type=number], textarea, select {
  width: 100%; padding: 6px; margin-top: 4px; border: 1px solid #aaa; border-radius: 4px;
}
button {
  margin-top: 12px; background: #555; color: #fff; padding: 8px 12px;
  border: none; border-radius: 4px; cursor: pointer;
}
.mt-mat-row, .mt-check { display: flex; gap: 8px; margin-bottom: 6px; }
canvas { border: 1px solid #ccc; border-radius: 4px; margin-top: 6px; }