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translatez(0);-moz-transform:scale(1) translatez(0);-o-transform:scale(1) translatez(0);-ms-transform:scale(1) translatez(0);transform:scale(1) translatez(0);pointer-events:auto}.textbookNav__A--current{position:relative;opacity:1;-ms-filter:none;filter:none}@media screen and (max-width:736px){.textbookNav{position:fixed;z-index:10;top:auto;left:0;right:0;bottom:0;padding-left:0;-webkit-transition:-webkit-transform 560ms cubic-bezier(0.19, 1, 0.22, 1);-moz-transition:-moz-transform 560ms cubic-bezier(0.19, 1, 0.22, 1);-o-transition:-o-transform 560ms cubic-bezier(0.19, 1, 0.22, 1);-ms-transition:-ms-transform 560ms cubic-bezier(0.19, 1, 0.22, 1);transition:transform 560ms cubic-bezier(0.19, 1, 0.22, 1);}.textbookNav:after{display:none}.textbookNav--fixed{position:fixed;top:auto;left:0}.textbookNav--absolute{position:fixed;top:auto;left:0;bottom:0}.textbookNav__head{position:relative;width:100%;padding:6vw 0;font-size:5.333333333333333vw;line-height:1.25;letter-spacing:.065em;text-align:center;background-color:#9da8a7;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;}.textbookNav__head--en{position:absolute;top:50%;left:0;margin-left:4vw;font-size:3.466666666666667vw;line-height:1;letter-spacing:.03em;-webkit-transform:translate3d(0,-50%,0);-moz-transform:translate3d(0,-50%,0);-o-transform:translate3d(0,-50%,0);-ms-transform:translate3d(0,-50%,0);transform:translate3d(0,-50%,0)}.textbookNav__navs{margin-top:0;display:-webkit-box;display:-moz-box;display:-webkit-flex;display:-ms-flexbox;display:box;display:flex;-webkit-box-pack:justify;-moz-box-pack:justify;-o-box-pack:justify;-ms-flex-pack:justify;-webkit-justify-content:space-between;justify-content:space-between;-webkit-box-lines:multiple;-moz-box-lines:multiple;-o-box-lines:multiple;-webkit-flex-wrap:wrap;-ms-flex-wrap:wrap;flex-wrap:wrap;background-color:#9da8a7}.textbookNav__nav{width:50%;min-height:16vw;text-align:center;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;border-top:1px solid #f4f3e7;}.textbookNav__nav:nth-child(2n+1){border-right:1px solid #f4f3e7}.textbookNav__A{display:inline-block;width:100%;padding:2vw 0;}.textbookNav__A:after{display:none}.textbookNav__num{display:block;width:100%;font-size:3.2vw;line-height:1.5;letter-spacing:.032em}.textbookNav__ttl{display:block;width:100%;margin:0;font-size:4.8vw;line-height:1.3;letter-spacing:.032em}}