.duo-viewer { position: relative; display: grid; grid-template-columns: 128px minmax(0,1fr); gap: 4px; width: 100%; max-width: 1000px; padding: 16px; background: transparent; color: var(--text); border: 0; border-radius: 0; overflow: hidden; }
.duo-controls { display: flex; flex-direction: column; justify-content: center; gap: 6px; z-index: 1; }
.duo-controls-title { font-size: 13px; color: var(--text-sec); margin-bottom: 8px; }
.duo-controls button { font: inherit; font-size: 14px; border: 1px solid transparent; border-radius: 24px; padding: 8px 10px; color: var(--text); background: var(--surface-2); cursor: pointer; transition: background .2s, color .2s; }
.duo-controls button:hover { background: var(--border-strong); }
.duo-controls button[aria-pressed="true"] { background: var(--ink); color: var(--ink-fg); }
.duo-controls button:disabled { opacity: .45; cursor: default; }
.duo-viewer :focus-visible { outline: 3px solid #7eaafa; outline-offset: 4px; }
.duo-fold { margin-top: 12px; font-size: 12px; color: var(--text-sec); }
.duo-fold-head { display: flex; justify-content: space-between; margin-bottom: 8px; }
.duo-fold input { display: block; width: 100%; height: 30px; margin: 0; accent-color: var(--ink); cursor: ew-resize; }
.duo-stage { position: relative; min-width: 0; width: 100%; height: 480px; touch-action: pan-y; cursor: grab; }
.duo-stage:active { cursor: grabbing; }
.duo-stage canvas { display: block; width: 100%; height: 100%; }
.duo-poster { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 22px; padding: 24px; background: transparent; z-index: 2; }
.duo-figure .duo-poster img { display: block; width: 100%; height: 100%; max-height: calc(100% - 62px); min-height: 0; flex: 0 1 auto; object-fit: contain; border: 0; border-radius: 0; background: transparent; }
.duo-viewer[data-state="loading"] .duo-start { display: none; }
.duo-viewer[data-state="loading"] .duo-poster img, .duo-viewer[data-state="error"] .duo-poster img { max-height: 100%; }
.duo-start { font: inherit; font-size: 14px; border: 1px solid var(--border-strong); border-radius: 24px; padding: 10px 22px; background: var(--surface-2); color: var(--text); cursor: pointer; }
.duo-viewer[data-state="ready"] .duo-poster { display: none; }
.duo-hint { grid-column: 2; text-align: center; font-size: 12px; color: var(--text-sec); min-height: 18px; margin: 0; }
@media (min-width: 701px) {
  .duo-viewer[data-pose="PT_Portrait"] .duo-stage { height: 560px; }
}
@media (max-width: 700px) {
  .duo-viewer { grid-template-columns: minmax(0,1fr); padding: 16px 12px; gap: 0; }
  .duo-stage { grid-row: 1; height: min(106vw,460px); }
  .duo-controls { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 5px; padding: 10px 4px 0; }
  .duo-controls-title { display: none; }
  .duo-controls button { padding: 10px 1px; font-size: 12px; }
  .duo-fold { grid-column: 1/-1; margin-top: 14px; padding-inline: 6px; }
  .duo-hint { grid-column: 1; margin-top: 12px; }
  .duo-poster { padding: 8px; }
}
@media (prefers-reduced-motion: reduce) { .duo-controls button { transition: none; } }