:root {
  --black: #000000;
  --white: #ffffff;
  --accent: #000000;
  --gray-50: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-900: #ffffff;
  --radius: 8px;
  --radius-lg: 12px;
  --pipe-bg: #ffffff;
  --pipe-ink: #000000;
  --pipe-ink-dim: #737373;
  --pipe-fill: #000000;
}
.demo-header { display: none; }
.panel-left { top: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }