/* The compound selector is the heading; each figure keeps its own notes. */
.section.proof-showcase {
  padding: 1rem 0 3.5rem;
  border-top: 0;
  font-family: 'Inter', system-ui, sans-serif;
  font-style: normal;
  line-height: 1.5;
}
.proof-switcher { display: flex; gap: 2.25rem; margin-bottom: 1rem; }
.proof-tab {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 60px;
  padding: 0 0 0.65rem;
  border: 0;
  background: transparent;
  color: #75786f;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.proof-tab::after { content: ''; position: absolute; inset: auto 0 0; height: 2px; background: transparent; }
.proof-tab[aria-selected="true"] { color: var(--text); }
.proof-tab[aria-selected="true"]::after { background: var(--accent); }
.proof-tab:hover { color: var(--text); }
.proof-tab-name { font-size: clamp(1.65rem, 3.4vw, 2.5rem); font-weight: 600; line-height: 1.2; letter-spacing: -0.04em; }
.proof-tab:focus-visible, .proof-actions a:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
.proof-view[hidden] { display: none; }
.proof-view.is-entering { animation: proof-view-enter 200ms ease-out both; }
@keyframes proof-view-enter { from { opacity: 0; } to { opacity: 1; } }
.proof-content { margin-bottom: 1.5rem; }
/* Keep a heading for each tab panel without repeating the visible tab name. */
.proof-title { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.proof-deck { max-width: 64ch; margin: 0; color: var(--text-secondary); font: 400 1rem/1.6 'Inter', system-ui, sans-serif; letter-spacing: 0; hyphens: none; }
.proof-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0 1.5rem; margin-top: 0.45rem; }
.proof-actions a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  border-bottom: 0;
  color: var(--text);
  font: 500 0.85rem/1.4 'Inter', system-ui, sans-serif;
  text-decoration: none;
  white-space: nowrap;
}
.proof-actions a > span { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.proof-actions a::after { content: '\2192'; }
.proof-actions a:hover { color: var(--accent); }
.proof-media { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem 1.25rem; }
.proof-media figure { min-width: 0; margin: 0; }
.proof-media > figure {
  display: flex;
  flex-direction: column;
  padding: 1.1rem 1rem 0.9rem;
  border: 1px solid #e5e6de;
  border-radius: 6px;
  background: #f6f6f1;
}
.proof-media figcaption { margin: 0 0 0.8rem; padding: 0; color: var(--text); font: 600 0.94rem/1.4 'Inter', system-ui, sans-serif; letter-spacing: -0.01em; text-align: left; }
.proof-figure-note { margin: auto 0 0; padding-top: 0.7rem; color: var(--text-secondary); font: 400 13px/1.45 'Inter', system-ui, sans-serif; letter-spacing: 0; }
.proof-note-cohort { white-space: nowrap; }
.proof-crc-canvas, .proof-pac3310-crc-canvas, .proof-nor-chart, .proof-oft-chart { display: block; width: 100%; height: 330px; }
.proof-media img { display: block; width: 100%; height: 100%; margin: 0; object-fit: contain; cursor: default; }
.proof-recordings { grid-column: 1 / -1; padding-top: 0.5rem; }
.proof-recordings-title { margin: 0 0 0.85rem; color: var(--text-secondary); font: 500 0.85rem/1.4 'Inter', system-ui, sans-serif; letter-spacing: 0; }
.proof-nor-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.proof-recordings figure { display: flex; flex-direction: column; }
.proof-recordings figcaption { order: 1; margin: 0.6rem 0 0; font-size: 0.85rem; font-weight: 500; }
.proof-nor-frame { position: relative; aspect-ratio: 48 / 35; overflow: hidden; border-radius: 4px; background: #c5c9bb; }
.proof-nor-frame video { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center 44%; }
.proof-nor-object {
  position: absolute;
  z-index: 2;
  transform: translate(-50%, -50%);
  padding: 0.2rem 0.35rem;
  border-radius: 3px;
  background: rgba(250, 250, 247, 0.9);
  color: var(--text);
  font: 500 13px/1.2 'Inter', system-ui, sans-serif;
  white-space: nowrap;
}
.proof-nor-panel--vehicle .proof-nor-object--novel { left: 70.8%; top: 16%; }
.proof-nor-panel--vehicle .proof-nor-object--familiar { left: 29%; top: 71.7%; }
.proof-nor-panel--pac832 .proof-nor-object--novel { left: 66.5%; top: 18%; }
.proof-nor-panel--pac832 .proof-nor-object--familiar { left: 30.2%; top: 66.3%; }
.proof-recordings--oft .proof-oft-video { width: 100%; max-width: 46rem; margin-inline: auto; }
.proof-oft-frame { position: relative; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 4px; background: #11120f; }
.proof-oft-frame video { display: block; width: 100%; height: 100%; object-fit: contain; background: #11120f; }
@media (max-width: 720px) {
  .section.proof-showcase { padding: 1rem 0 2.5rem; }
  .proof-switcher { gap: 1.5rem; margin-bottom: 0.85rem; }
  .proof-tab { min-height: 48px; }
  .proof-content { margin-bottom: 1.1rem; }
  .proof-actions { gap: 0 1.25rem; }
  .proof-media { grid-template-columns: 1fr; gap: 1rem; }
  .proof-media > figure { padding: 1rem 0.75rem 0.85rem; }
  .proof-crc-canvas, .proof-pac3310-crc-canvas { height: clamp(280px, 72vw, 330px); }
  .proof-nor-chart, .proof-oft-chart { height: 320px; }
  .proof-recordings { grid-column: auto; padding-top: 0.75rem; }
}
@media (max-width: 580px) {
  .proof-nor-grid { grid-template-columns: 1fr; gap: 1.1rem; }
}
@media (prefers-reduced-motion: reduce) { .proof-view.is-entering { animation: none; } }
@media print { .proof-view.is-entering { animation: none; } }