/* CRT simulator exhibit. Shared primitives live in museum.css. */
.exhibit .ex-stage { max-width: 760px; }
#crt-canvas { aspect-ratio: 8 / 5; background: #000; }
.ex-diagram { margin: 22px 0; padding: 10px; border: 1px solid var(--rule); border-radius: var(--r-m); background: var(--room-2); }
.ex-diagram svg { display: block; width: 100%; height: auto; border-radius: 8px; }
.ex-diagram figcaption { padding: 8px 4px 0; color: var(--ink-3); font-size: .85rem; }
.ex-row-switches { margin-top: 14px; }
.ex-note { margin: 0 0 12px; color: var(--ink-2); max-width: 60ch; }