.rad {
  display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 12px;
  padding: 12px; max-width: 1600px; margin: 0 auto; align-items: start;
}
.stage { display: flex; flex-direction: column; gap: 8px; min-width: 0; position: sticky; top: 56px; }
.readout { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 14px; padding: 0 4px; min-height: 1.6em; color: var(--ink-2); font-size: 13px; }
/* Every read-out has a slot of fixed width: the numbers change, nothing moves. */
.readout .ro { white-space: nowrap; }
.readout .num {
  display: inline-block; text-align: right; white-space: pre; margin: 0 0.3em;
  font-family: var(--mono); font-variant-numeric: tabular-nums; color: var(--ink); font-weight: 600;
}
.readout .sw { display: inline-block; width: 14px; height: 4px; border-radius: 2px; vertical-align: middle; margin-right: 5px; }
.readout .sw.vel { background: #3d95f0; }
.readout .sw.acc { background: #f08a20; }
/* (The height leaves room for the read-out, two lines of it with the probe on, the hint and the plots.) */
.field-wrap { position: relative; height: max(320px, calc(100vh - 374px)); background: #05070b; border-radius: var(--radius); overflow: hidden; }
.field-wrap canvas { width: 100%; height: 100%; cursor: grab; }
.field-wrap canvas.dragging { cursor: grabbing; }
/* The hint under the picture: what to drag (lib/style.css styles it). */
.stage .hint { padding: 0 4px; }
.row2 { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 8px; }
.plot-wrap { position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); height: 200px; }
/* The plots are only looked at: a finger over them scrolls the page. */
.plot-wrap canvas { width: 100%; height: 100%; touch-action: pan-y; }
.controls { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.controls .panel { display: flex; flex-direction: column; gap: 6px; }
.button-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px; }
.button-grid button { padding: 3px 4px; font-size: 13px; }
.button-grid button.wide { grid-column: 1 / -1; }
#extras button, #lines-box button, #map-box button { font-size: 13px; padding: 3px 8px; }
#motion-note:empty { display: none; }
#motion-note.warn { color: var(--warn); }
.expr input { font-size: 13px; }
@media (max-width: 900px) {
  .rad { grid-template-columns: minmax(0, 1fr); }
  .stage { position: static; }
  .field-wrap { height: auto; aspect-ratio: 1; }
  .row2 { grid-template-columns: minmax(0, 160px) minmax(0, 1fr); }
  .plot-wrap { height: 160px; }
}