.book{max-width:1100px;margin:6vh auto;padding:0 20px}.book.wide{max-width:min(1840px,94vw);margin-top:4vh}.page-wrap.turning{perspective:1600px}.turn{transform-origin:0;animation:.9s cubic-bezier(.6,.05,.3,1) both turn}@keyframes turn{to{opacity:.2;transform:rotateY(-92deg)}}.doors{flex-wrap:wrap;gap:14px;margin-top:18px;display:flex}.intro p{max-width:58ch;font-size:19px}