#pipeline-guide {
  color-scheme: light;
  --background: light-dark(#ffffff, #1b1e22);
  --foreground: light-dark(#20262c, #edf0f2);
  --page: light-dark(#f5f5f2, #131619);
  --muted: light-dark(#f0f2f3, #282d33);
  --muted-foreground: light-dark(#667079, #a0aab3);
  --border: light-dark(#dfe3e5, #343b43);
  --focus: light-dark(#2866aa, #92c3ff);
  --viz-series-1: light-dark(#245fa8, #92c3ff);
  --viz-series-2: light-dark(#a54b15, #f4ae75);
  --viz-series-3: light-dark(#24723c, #82d89a);
  --viz-series-4: light-dark(#a43d75, #f0a0cd);
}
#pipeline-guide * { box-sizing: border-box; }
#pipeline-guide { max-width: 1120px; margin: 0 auto; padding: 36px 40px 24px; border: 1px solid var(--border); border-radius: 16px; background: var(--background); }
#pipeline-guide .pg-toolbar { padding-bottom: 28px; margin-bottom: 30px; border-bottom: 1px solid var(--border); }
#pipeline-guide .pg-label { display: block; margin-bottom: 10px; color: var(--muted-foreground); }
#pipeline-guide .pg-controls { display: grid; grid-template-columns: minmax(0,1fr) auto auto; gap: 8px; align-items: center; }
#pipeline-guide .pg-stage-picker { min-width: 0; margin-right: 16px; }
#pipeline-guide .pg-select, #pipeline-guide .pg-button { font: inherit; height: 46px; margin: 0; padding: 0 16px; border: 1px solid var(--border); border-radius: 8px; background: var(--background); color: var(--foreground); }
#pipeline-guide .pg-select { width: 100%; }
#pipeline-guide .pg-button { cursor: pointer; transition: background-color .15s, border-color .15s; }
#pipeline-guide #pipeline-next { background: var(--foreground); color: var(--background); border-color: var(--foreground); }
#pipeline-guide .pg-button:not(:disabled):hover { background: var(--muted); border-color: var(--muted-foreground); }
#pipeline-guide #pipeline-next:not(:disabled):hover { background: var(--muted-foreground); border-color: var(--muted-foreground); }
#pipeline-guide .pg-button:disabled { opacity: .3; cursor: default; }
#pipeline-guide :is(.pg-select, .pg-button):focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
#pipeline-guide .pg-source { margin-bottom: 24px; display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 16px; }
#pipeline-guide .pg-source code { color: var(--foreground); }
#pipeline-guide code {  overflow-wrap: anywhere; }
#pipeline-guide .pg-muted { color: var(--muted-foreground); }
#pipeline-guide .pg-transformation { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); overflow: hidden; border: 1px solid var(--border); border-radius: 12px; }
#pipeline-guide .pg-image-panel { min-width: 0; padding: 20px; }
#pipeline-guide .pg-image-panel + .pg-image-panel { border-left: 1px solid var(--border); }
#pipeline-guide .pg-image-panel h2 { margin: 0 0 12px; color: var(--muted-foreground); }
#pipeline-guide .pg-images { display: flex; gap: 14px; align-items: start; }
#pipeline-guide figure { min-width: 0; flex: 1; margin: 0; }
#pipeline-guide figcaption { min-height: 40px; margin-bottom: 10px; overflow-wrap: anywhere; }
#pipeline-guide canvas, #pipeline-guide .pg-graph { display: block; width: 100%; height: auto; aspect-ratio: 4/3; border-radius: 5px; }
#pipeline-guide canvas { image-rendering: pixelated; }
#pipeline-guide .pg-graph { background: var(--muted); }
#pipeline-guide .pg-legend { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 14px 2px 0; color: var(--muted-foreground); }
#pipeline-guide .pg-key { display: inline-flex; align-items: center; gap: 7px; }
#pipeline-guide .pg-swatch { display: inline-block; width: 14px; height: 8px; border-radius: 2px; background: var(--foreground); }
#pipeline-guide .pg-ramp { width: 40px; background: linear-gradient(to right,var(--muted),var(--foreground)); }
#pipeline-guide .pg-explanation { display: grid; grid-template-columns: minmax(0,1.65fr) minmax(0,1fr); gap: 32px; margin-top: 32px; padding-top: 28px; border-top: 1px solid var(--border); }
#pipeline-guide .pg-explanation section { min-width: 0; }
#pipeline-guide .pg-explanation h2 { margin: 0 0 16px; }
#pipeline-guide .pg-logic { margin: 0; padding-left: 22px; }
#pipeline-guide .pg-logic li { margin-bottom: 14px; padding-left: 6px; }
#pipeline-guide .pg-logic li:last-child { margin-bottom: 0; }
#pipeline-guide .pg-logic li::marker { color: var(--muted-foreground); }
#pipeline-guide .pg-notes-section { padding-left: 28px; border-left: 1px solid var(--border); }

#pipeline-guide .pg-notes p { margin: 0 0 14px; }
#pipeline-guide .pg-notes p:last-child { margin-bottom: 0; }
#pipeline-guide .pg-logic code, #pipeline-guide .pg-notes code { padding: 1px 4px; border-radius: 3px; background: var(--muted); color: var(--foreground); }
#pipeline-guide .pg-provenance { margin: 28px 0 0; padding-top: 18px; border-top: 1px solid var(--border); }
@media (max-width: 760px) {
#pipeline-guide { padding: 24px; }
#pipeline-guide .pg-stage-picker { margin-right: 4px; }
#pipeline-guide .pg-explanation { grid-template-columns: minmax(0,1fr); gap: 24px; }
#pipeline-guide .pg-notes-section { padding-left: 0; border-left: 0; padding-top: 22px; border-top: 1px solid var(--border); }
}
@media (max-width: 580px) {
#pipeline-guide { padding: 20px 16px; border-radius: 12px; }
#pipeline-guide .pg-transformation { grid-template-columns: minmax(0,1fr); }
#pipeline-guide .pg-image-panel { padding: 16px; }
#pipeline-guide .pg-image-panel + .pg-image-panel { border-left: 0; border-top: 1px solid var(--border); }
#pipeline-guide .pg-controls { grid-template-columns: minmax(0,1fr) auto auto; gap: 6px; }
#pipeline-guide .pg-stage-picker { margin: 0; }
#pipeline-guide .pg-select, #pipeline-guide .pg-button { padding: 0 10px; }

}
@media (prefers-reduced-motion: reduce) {
#pipeline-guide .pg-button { transition: none; } }
#pipeline-guide { width:100%; max-width:none; padding:0; margin:0; border:0; border-radius:0; }
#pipeline-guide .pg-toolbar { border:0; padding-bottom:0; }
#pipeline-guide .pg-transformation { border:0; border-radius:0; gap:24px; overflow:visible; }
#pipeline-guide .pg-image-panel { padding:0; }
#pipeline-guide .pg-image-panel + .pg-image-panel { border:0; }
#pipeline-guide .pg-explanation, #pipeline-guide .pg-notes-section, #pipeline-guide .pg-provenance { border:0; padding-top:0; }
#pipeline-guide .pg-notes-section { padding-left:0; }
#pipeline-guide .pg-images figure { flex:0 1 var(--picture-width,100%); }
#pipeline-guide .picture { position:relative; overflow:hidden; border-radius:5px; }
#pipeline-guide .kernel-overlay { position:absolute; inset:0; width:100%; height:100%; pointer-events:none; }
#pipeline-guide #pg-status { margin:18px 0 6px; min-height:3.4em; }
#pipeline-guide #pg-progress { display:block; width:100%; margin:0; min-height:28px; accent-color:var(--focus); cursor:ew-resize; }
#pipeline-guide #pg-progress:focus-visible { outline:2px solid var(--focus); outline-offset:3px; }
#pipeline-guide .pg-legend { margin-top:10px; }

/* Follow the course site's theme toggle. */
[data-theme="dark"] #pipeline-guide { color-scheme: dark; }
#pipeline-guide .pg-image-panel h2 { padding: 0; }
#pipeline-guide .pg-explanation h2 { padding: 0; }