#unit-price-app {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px;
  border: 1px solid #ddd;
  border-radius: 10px;
  background: #fff;
}

#unit-price-app h2 {
  font-size: 20px;
  margin: 0 0 8px;
}

.lead {
  font-size: 14px;
  color: #555;
  margin: 0 0 12px;
}

.box {
  background: #fafafa;
  border: 1px solid #e7e7e7;
  border-radius: 10px;
  padding: 12px;
  margin: 10px 0;
}

.box h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

#unit-price-app input {
  width: 100%;
  padding: 12px;
  margin: 6px 0;
  border: 1px solid #ccc;
  border-radius: 8px;
  box-sizing: border-box;
  font-size: 16px;
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.btn {
  flex: 1;
  padding: 12px;
  background: #0f172a;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
}

.btn-sub {
  width: 120px;
  padding: 12px;
  background: #eee;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.result {
  margin-top: 12px;
  padding: 12px;
  background: #f7f7f7;
  border-radius: 10px;
  white-space: pre-wrap;
  font-size: 14px;
}

.note {
  font-size: 12px;
  color: #666;
  margin-top: 10px;
}
``