@import"https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;500&family=Noto+Sans+JP:wght@300;400&family=EB+Garamond:ital,wght@0,400;0,500;1,400;1,500&family=Inter:wght@300;400;500&display=swap";.corner[data-astro-cid-sjo525ta]{position:absolute;width:18px;height:18px;border-color:var(--ink-light);border-style:solid;pointer-events:none}.corner-tr[data-astro-cid-sjo525ta]{top:16px;right:16px;border-width:1.5px 1.5px 0 0}.corner-bl[data-astro-cid-sjo525ta]{bottom:16px;left:16px;border-width:0 0 1.5px 1.5px}.link-list[data-astro-cid-sjo525ta]{width:100%;display:flex;flex-direction:column;gap:6px}.link-card--current[data-astro-cid-sjo525ta]{background:var(--teal-light);border-color:var(--teal)}.link-card--current[data-astro-cid-sjo525ta] .link-card-name[data-astro-cid-sjo525ta]{color:var(--teal)}.link-card--current[data-astro-cid-sjo525ta] .link-card-desc[data-astro-cid-sjo525ta]{color:var(--teal);opacity:.7}.book-wrapper[data-astro-cid-ob47ezxc]{display:flex;flex-direction:column;align-items:center;gap:1.5rem;width:100%}.flip-book[data-astro-cid-ob47ezxc]{perspective:2400px;width:calc(var(--page-w) * 2 + 2px);height:var(--page-h);position:relative;filter:drop-shadow(4px 8px 32px rgba(44,44,42,.16))}.static-left[data-astro-cid-ob47ezxc]{position:absolute;top:0;left:0;width:var(--page-w);height:var(--page-h);z-index:0;overflow:hidden;border-radius:var(--corner-r) 0 0 var(--corner-r)}.static-left[data-astro-cid-ob47ezxc] .page[data-astro-cid-ob47ezxc]{width:100%;height:100%;border-radius:var(--corner-r) 0 0 var(--corner-r);border-right:1px solid var(--ink-faint)}.spine-center[data-astro-cid-ob47ezxc]{position:absolute;top:0;left:var(--page-w);width:2px;height:100%;background:linear-gradient(to right,#c8c5bb,#e8e5dc,#c8c5bb);z-index:10;pointer-events:none}.leaf[data-astro-cid-ob47ezxc]{position:absolute;top:0;left:var(--page-w);width:var(--page-w);height:var(--page-h);transform-origin:left center;transform-style:preserve-3d;transition:transform var(--flip-duration) var(--flip-ease);z-index:2}.leaf[data-astro-cid-ob47ezxc].is-flipping-forward{z-index:5}.leaf[data-astro-cid-ob47ezxc].is-flipped{transform:rotateY(-180deg);z-index:1}.leaf-front[data-astro-cid-ob47ezxc],.leaf-back[data-astro-cid-ob47ezxc]{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;overflow:hidden}.leaf-front[data-astro-cid-ob47ezxc]{border-radius:0 var(--corner-r) var(--corner-r) 0}.leaf-front[data-astro-cid-ob47ezxc] .page[data-astro-cid-ob47ezxc]{width:100%;height:100%;border-radius:0 var(--corner-r) var(--corner-r) 0}.leaf-back[data-astro-cid-ob47ezxc]{transform:rotateY(180deg);border-radius:var(--corner-r) 0 0 var(--corner-r)}.leaf-back[data-astro-cid-ob47ezxc] .page[data-astro-cid-ob47ezxc]{width:100%;height:100%;border-radius:var(--corner-r) 0 0 var(--corner-r);border-right:1px solid var(--ink-faint)}.page-empty[data-astro-cid-ob47ezxc]{background:#fffdf8;border-right:1px solid var(--ink-faint);border-radius:var(--corner-r) 0 0 var(--corner-r)}.static-left-content[data-astro-cid-ob47ezxc]{width:100%;height:100%}@media (max-width: 600px){.flip-book[data-astro-cid-ob47ezxc]{width:min(92vw,400px)!important;height:auto!important;perspective:none;filter:none}.static-left[data-astro-cid-ob47ezxc]{position:static;width:100%;height:auto;border-radius:var(--corner-r);border-bottom:1px solid var(--ink-faint);box-shadow:2px 4px 16px #2c2c2a1f}.static-left[data-astro-cid-ob47ezxc] .page[data-astro-cid-ob47ezxc]{border-radius:var(--corner-r)!important;border-right:none;min-height:340px;height:auto}.leaf[data-astro-cid-ob47ezxc]{position:static!important;transform:none!important;width:100%!important;height:auto!important;transform-style:flat;transition:none;box-shadow:2px 4px 16px #2c2c2a1f;border-radius:var(--corner-r)}.leaf[data-astro-cid-ob47ezxc].is-flipped{display:none}.leaf[data-astro-cid-ob47ezxc]:not(.is-flipped){display:block}.leaf-front[data-astro-cid-ob47ezxc]{border-radius:var(--corner-r)}.leaf-front[data-astro-cid-ob47ezxc] .page[data-astro-cid-ob47ezxc]{border-radius:var(--corner-r)!important;min-height:340px;height:auto}.leaf-back[data-astro-cid-ob47ezxc],.spine-center[data-astro-cid-ob47ezxc]{display:none}}:root{--cream: #FAF8F3;--cream-dark: #F2EFE6;--ink: #2C2C2A;--ink-mid: #5F5E5A;--ink-light: #B4B2A9;--ink-faint: #D3D1C7;--green: #3B6D11;--green-light: #EAF3DE;--green-mid: #97C459;--purple: #534AB7;--purple-light:#EEEDFE;--amber: #BA7517;--amber-light: #FAEEDA;--teal: #0F6E56;--teal-light: #E1F5EE;--wa-sumi: #2C2B28;--wa-kabe: #F5F0E8;--wa-fuji: #8B7EC8;--wa-moegi: #5A8A3C;--wa-beni: #C0392B;--font-ja-serif: "Noto Serif JP", "Yu Mincho", "游明朝", Georgia, serif;--font-ja-sans: "Noto Sans JP", "Hiragino Kaku Gothic Pro", sans-serif;--font-en-serif: "EB Garamond", Georgia, serif;--font-en-sans: "Inter", system-ui, sans-serif;--page-w: 420px;--page-h: 580px;--spread-gap: 2px;--corner-r: 3px;--shadow-page: 4px 8px 32px rgba(44,44,42,.18);--flip-duration: .64s;--flip-ease: cubic-bezier(.645, .045, .355, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{background:var(--cream-dark);min-height:100%}body{font-size:16px;line-height:1.7;color:var(--ink);-webkit-font-smoothing:antialiased;overflow-x:hidden}:lang(ja) body,body.lang-ja{font-family:var(--font-ja-sans)}:lang(en) body,body.lang-en{font-family:var(--font-en-sans)}.book-stage{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100svh;padding:2rem 1rem;gap:1.5rem;position:relative}.book-stage:before{content:"";position:fixed;inset:0;background-image:radial-gradient(circle,var(--ink-faint) 1px,transparent 1px);background-size:22px 22px;opacity:.45;pointer-events:none;z-index:0}.spread{position:relative;display:flex;align-items:stretch;z-index:1;filter:drop-shadow(var(--shadow-page));width:calc(var(--page-w) * 2 + var(--spread-gap));height:var(--page-h)}.page{width:var(--page-w);height:var(--page-h);background:#fffdf8;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:3rem 2.5rem;gap:1rem}.page-left{border-radius:var(--corner-r) 0 0 var(--corner-r);border-right:1px solid var(--ink-faint)}.page-right{border-radius:0 var(--corner-r) var(--corner-r) 0}.page:before,.page:after{content:"";position:absolute;width:18px;height:18px;border-color:var(--ink-light);border-style:solid;pointer-events:none}.page:before{top:16px;left:16px;border-width:1.5px 0 0 1.5px}.page:after{bottom:16px;right:16px;border-width:0 1.5px 1.5px 0}.page-num{position:absolute;bottom:14px;font-size:10px;letter-spacing:.08em;color:var(--ink-light)}.page-left .page-num,.page-right .page-num{left:50%;transform:translate(-50%)}.spine{width:var(--spread-gap);background:var(--ink-faint);position:relative;flex-shrink:0}.flip-book{perspective:2000px;width:calc(var(--page-w) * 2 + var(--spread-gap));height:var(--page-h);position:relative}.leaf{position:absolute;top:0;left:50%;width:var(--page-w);height:var(--page-h);transform-origin:left center;transform-style:preserve-3d;transition:transform var(--flip-duration) var(--flip-ease);z-index:1}.leaf.is-flipped{transform:rotateY(-180deg)}.leaf-front,.leaf-back{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden}.leaf-front{background:#fffdf8;border-radius:0 var(--corner-r) var(--corner-r) 0}.leaf-back{background:#fffdf8;border-radius:var(--corner-r) 0 0 var(--corner-r);transform:rotateY(180deg)}.static-left{position:absolute;top:0;left:0;width:var(--page-w);height:var(--page-h);background:#fffdf8;border-radius:var(--corner-r) 0 0 var(--corner-r);overflow:hidden;border-right:1px solid var(--ink-faint)}.nav-controls{display:flex;align-items:center;gap:2rem;z-index:2}.nav-btn{background:none;border:1px solid var(--ink-faint);border-radius:50%;width:44px;height:44px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--ink-mid);transition:border-color .2s,color .2s}.nav-btn:hover{border-color:var(--ink-mid);color:var(--ink)}.nav-btn:disabled{opacity:.3;cursor:default}.nav-dots{display:flex;gap:8px;align-items:center}.nav-dot{width:6px;height:6px;border-radius:50%;background:var(--ink-faint);border:none;cursor:pointer;transition:background .2s,transform .2s}.nav-dot.active{background:var(--ink-mid);transform:scale(1.3)}.lang-toggle{position:fixed;top:1.25rem;right:1.5rem;z-index:100;display:flex;gap:2px;border:1px solid var(--ink-faint);border-radius:20px;overflow:hidden;background:#faf8f3d9;backdrop-filter:blur(8px)}.lang-btn{padding:5px 14px;font-size:11px;letter-spacing:.1em;border:none;background:transparent;cursor:pointer;color:var(--ink-mid);transition:background .2s,color .2s}.lang-btn.active{background:var(--ink);color:var(--cream);border-radius:18px}.page-eyebrow{font-size:9px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-light);text-align:center}.page-title-ja{font-family:var(--font-ja-serif);font-weight:300;font-size:1.7rem;line-height:1.5;text-align:center;color:var(--wa-sumi);letter-spacing:.05em}.page-title-en{font-family:var(--font-en-serif);font-weight:400;font-style:italic;font-size:1.6rem;line-height:1.4;text-align:center;color:var(--ink)}.page-body-ja{font-family:var(--font-ja-serif);font-weight:300;font-size:.78rem;line-height:2;text-align:center;color:var(--ink-mid);letter-spacing:.04em}.page-body-en{font-family:var(--font-en-serif);font-size:.85rem;font-style:italic;line-height:1.9;text-align:center;color:var(--ink-mid)}.page-rule{width:40px;height:1px;background:var(--ink-faint)}.link-card{width:100%;border:.5px solid var(--ink-faint);border-radius:4px;padding:.75rem 1rem;display:flex;align-items:center;justify-content:space-between;text-decoration:none;color:inherit;transition:border-color .2s,background .2s;background:transparent}.link-card:hover{border-color:var(--ink-light);background:var(--cream)}.link-card-name{font-size:.8rem;font-weight:500}.link-card-desc{font-size:.7rem;color:var(--ink-light);margin-top:2px}.link-card-arrow{font-size:.75rem;color:var(--ink-light)}.illus{flex-shrink:0}@media (max-width: 900px){:root{--page-w: min(46vw, 400px);--page-h: min(68vw, 560px)}.page{padding:2rem 1.5rem}.page-title-ja{font-size:1.35rem}.page-title-en{font-size:1.3rem}}@media (max-width: 600px){:root{--page-w: 90vw;--page-h: auto}.spread,.flip-book{width:var(--page-w)!important;height:auto!important}.leaf,.static-left{width:var(--page-w)!important;position:static!important}.flip-book{display:flex;flex-direction:column;perspective:none}.leaf{transform:none!important}.leaf-back{display:none}.page{width:100%;min-height:340px;border-radius:var(--corner-r)!important}.page-left{border-right:none;border-bottom:1px solid var(--ink-faint)}.nav-controls{gap:1.25rem}}@media (prefers-reduced-motion: reduce){.leaf{transition:none}}