html:after,html:before{content:none!important}.prologue-page{min-height:100dvh;padding:clamp(20px,4vw,48px);background:#d8d8d8;display:flex;align-items:center;justify-content:center}.prologue-page.manual-prologue-page{background:unset}.prologue-page.hints-prologue-overlay{background:rgba(0,0,0,.48)}.prologue-brand{position:fixed;top:23px;left:23px;z-index:20;color:#2c2c2c;text-decoration:none}.prologue-brand .brand-logo{display:block;height:64px;width:auto}.prologue-brand:hover{color:#2c2c2c;text-decoration:none}.prologue-book{position:relative;width:1524px;height:1016px;background:#fbfbfb;box-shadow:0 8px 22px rgba(0,0,0,.22);display:grid;grid-template-columns:762px 762px;align-items:stretch;overflow:visible}.prologue-book:before{content:none}.prologue-page-left,.prologue-page-right{width:762px;height:1016px;padding:clamp(28px,2.2rem,56px);display:flex;flex-direction:column;position:relative}.prologue-page-left{padding:70px 50px;justify-content:flex-start;align-items:flex-start;gap:120px;min-width:0;width:100%;height:100%;max-height:1016px;box-sizing:border-box;overflow-y:visible;border:0;border-right:1px solid #8c8c8c;margin-bottom:0}.prologue-page-left>section:first-of-type,.prologue-page-left>section:nth-of-type(2),.prologue-page-left>section:nth-of-type(3){display:flex;flex-direction:column;flex-wrap:nowrap;gap:32px;height:-moz-fit-content;height:fit-content}.prologue-page-left>section:nth-of-type(2) h2{height:42px}.prologue-page-right{padding:70px 50px;min-width:0;width:100%;box-sizing:border-box}.prologue-page-left:after,.prologue-page-right:before{content:"";position:absolute;top:0;bottom:0;width:4.2%;pointer-events:none}.prologue-page-left:after{right:0;background:linear-gradient(90deg,hsla(0,0%,100%,.24),hsla(0,0%,53%,.24) 42%,rgba(8,8,8,.24))}.prologue-page-right:before{left:0;background:linear-gradient(90deg,rgba(8,8,8,.24),hsla(0,0%,53%,.24) 58%,hsla(0,0%,100%,.24))}.prologue-page-left h1,.prologue-page-left h2,.prologue-page-right h2{font-family:var(--font-shippori-mincho),"Hiragino Mincho ProN","Yu Mincho",serif;font-weight:500;line-height:1.2;color:#151515}.prologue-page-left h1{margin:0 0 24px}.prologue-page-left h2,.prologue-page-right h2{margin:0}.prologue-page-left h1,.prologue-page-left h2{font-size:clamp(24px,2.2rem,48px)}.prologue-page-right h2{font-size:clamp(28px,2.4rem,50px);margin-bottom:24px;padding-bottom:24px}.prologue-list-item p,.prologue-page-left p{margin:0;color:#1f1f1f;font-size:clamp(12px,1rem,18px);line-height:1.8;letter-spacing:.02em}.prologue-list{display:flex;flex-direction:column;gap:48px}.prologue-list-item h3{margin:0 0 6px;display:flex;align-items:center;gap:10px;color:#0f0f0f;font-size:clamp(16px,1.25rem,24px);line-height:1.4}.prologue-list-item h3:after{content:"";flex:1 1;border-bottom:1px dashed #7d7d7d;order:2}.prologue-list-item h3 span{order:3;flex-shrink:0;font-family:var(--font-shippori-mincho),"Hiragino Mincho ProN","Yu Mincho",serif;font-size:clamp(15px,1.1rem,20px);color:#333;letter-spacing:.02em}.prologue-item-icon{margin-top:10px;width:100%;display:flex;justify-content:flex-end;align-items:flex-start;flex-shrink:0;opacity:.8}.prologue-item-icon img{display:block;height:120px;width:200px;max-width:100%;object-fit:contain}.prologue-open-tab{position:absolute;right:4.8%;top:0;width:clamp(36px,4.6vw,62px);height:130px;background:#c8c8c8;box-shadow:2px 2px 5px rgba(0,0,0,.25);-webkit-clip-path:polygon(0 0,100% 0,100% 78%,50% 100%,0 78%);clip-path:polygon(0 0,100% 0,100% 78%,50% 100%,0 78%);text-decoration:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.08em;padding:0;color:#008ce3;font-size:clamp(13px,1.45vw,20px);line-height:1.15;transition:transform .2s ease,box-shadow .2s ease}.prologue-open-tab:hover{transform:scale(1.04);box-shadow:3px 3px 10px rgba(0,0,0,.28)}.prologue-open-tab:focus-visible{outline:2px solid #008ce3;outline-offset:2px}.prologue-logo{position:absolute;right:-152px;bottom:-2px;width:clamp(96px,11vw,150px);line-height:0}@media (max-width:1160px){.prologue-logo{right:8px;bottom:-74px}}@media (max-width:860px){.prologue-book{width:min(1524px,100%);height:auto;grid-template-columns:1fr}.prologue-book:before,.prologue-page-left:after,.prologue-page-right:before{display:none}.prologue-page-left,.prologue-page-right{padding:28px 24px}.prologue-page-left,.prologue-page-right{width:auto;height:auto;max-width:100%}.prologue-page-right{border-top:1px solid #cecece}.prologue-open-tab{right:24px}.prologue-logo{position:static;margin:18px 24px 24px auto}}