/* Silent book preview beside the format decision. */
.paperback-motion{position:relative;max-width:820px;margin:0 auto 42px;padding:7px;border:1px solid #d8b85b;background:rgba(255,255,255,.12);box-shadow:0 17px 38px rgba(0,25,16,.24);border-radius:5px;overflow:hidden}
.paperback-motion-video{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:contain;background:#214c38;border-radius:2px}
.paperback-motion-toggle{position:absolute;right:21px;bottom:21px;display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:10px 16px;border:1px solid #e9d08a;border-radius:3px;background:rgba(10,55,37,.94);color:#fffaf0;font-family:Arial,sans-serif;font-size:14px;font-weight:600;line-height:1.25;cursor:pointer;overflow:hidden;box-shadow:0 3px 10px #0003;transition:background .18s,box-shadow .18s}
.paperback-motion-toggle[hidden]{display:none}.paperback-motion-toggle::after{content:"";position:absolute;top:-80%;left:-65%;width:30%;height:260%;background:linear-gradient(90deg,transparent,#ffffff55,transparent);transform:skewX(-24deg);pointer-events:none;transition:left .55s ease}
.paperback-motion-toggle:hover{background:#135b3f;box-shadow:0 4px 14px #0005}.paperback-motion-toggle:hover::after{left:135%}.paperback-motion-toggle:focus-visible{outline:3px solid #ffe39a;outline-offset:4px}.motion-toggle-icon{width:13px;display:inline-block;font-size:13px}.paperback-motion-fallback{color:#fff8e9;display:block;padding:12px;text-align:center}
@media(max-width:639px){.paperback-motion{padding:5px;margin-bottom:28px}.paperback-motion-toggle{right:14px;bottom:14px;min-height:44px;padding:9px 12px;font-size:13px}}
@media(prefers-reduced-motion:reduce){.paperback-motion-toggle,.paperback-motion-toggle::after{transition:none}}