:root{color-scheme:light;--ink:#18223c;--blue:#294a9b;--blue2:#dce6ff;--paper:#f7f8fb;--white:#fff;--line:#cbd4e4;--sub:#53627a;--gold:#e6ac48;--shadow:#101d4114}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Yu Gothic","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;line-height:1.65}a{color:var(--blue);text-underline-offset:.18em}a:hover{text-decoration-thickness:2px}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--gold);outline-offset:3px}.shell{width:min(1120px,calc(100% - 40px));margin:auto}.skip{position:absolute;top:-80px;left:12px;padding:8px 14px;background:#fff;z-index:100}.skip:focus{top:12px}.site-header{background:#fff;border-bottom:1px solid var(--line)}.header-inner{display:flex;justify-content:space-between;align-items:center;gap:26px;min-height:72px}.brand{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:1.45rem;font-weight:700;letter-spacing:.08em;text-decoration:none;color:var(--ink);white-space:nowrap}.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:32px;height:34px;margin-right:9px;background:var(--blue);color:#fff;font-family:sans-serif;font-size:1.4rem;vertical-align:middle}.site-header nav{display:flex;flex-wrap:wrap;gap:clamp(10px,2.3vw,26px);font-size:.91rem;font-weight:600}.site-header nav a{text-decoration:none;color:var(--ink)}.site-header nav a:hover{color:var(--blue);text-decoration:underline}.hero{background:#e8eef9;border-bottom:1px solid var(--line);overflow:hidden}.hero-grid{display:grid;grid-template-columns:minmax(0,1.85fr) minmax(210px,.65fr);align-items:stretch;gap:clamp(24px,5vw,76px)}.hero-main{padding:74px 0 72px}.edition{margin:0 0 13px;color:var(--blue);font-size:.84rem;letter-spacing:.08em;font-weight:700}.hero h1,.page-heading h1,.book-detail h1{margin:0;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-weight:700;letter-spacing:.025em;line-height:1.3}.hero h1{font-size:clamp(2.6rem,5vw,4.8rem)}.intro{max-width:670px;font-size:1.04rem;margin:22px 0 30px}.hero-aside{position:relative;background:var(--blue);padding:36px 22px;color:#fff;display:flex;flex-direction:column;justify-content:space-between}.hero-aside:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,transparent 45%,#ffffff10 45%,#ffffff10 46%,transparent 46%);pointer-events:none}.shelf-illustration{height:225px;border-bottom:12px solid #f1d598;display:flex;gap:10px;align-items:flex-end;padding:12px 4px}.shelf-illustration i{display:block;width:20%;height:70%;background:#d7e1ff;box-shadow:inset 4px 0 #8ea7df}.shelf-illustration i:nth-child(2){height:90%;background:#ebc47b;box-shadow:inset 4px 0 #b88936}.shelf-illustration i:nth-child(3){height:55%;background:#eef3ff}.shelf-illustration i:nth-child(4){height:78%;background:#92ade8;transform:rotate(-6deg);transform-origin:bottom}.shelf-illustration i:nth-child(5){height:95%;background:#edf3ff}.hero-aside p{margin:22px 0 5px}.hero-aside strong{display:block;font-size:1.8rem;line-height:1.2}.hero-aside span{font-size:.82rem;color:#e4ebff}.search-form{max-width:720px}.search-form label{display:block;margin-bottom:9px;font-weight:700;font-size:.88rem}.search-row{display:flex;background:#fff;padding:5px;border:1px solid #8e9fbc;box-shadow:0 6px 22px var(--shadow)}.search-row input{flex:1;min-width:0;padding:12px;border:0;font:inherit;color:var(--ink);background:transparent}.search-row button{border:0;background:var(--blue);color:#fff;padding:11px 23px;font:inherit;font-weight:700;cursor:pointer;white-space:nowrap}.search-row button:hover{background:#173779}.search-hint{color:var(--sub);font-size:.78rem;margin:7px 0 0}.section{padding:64px 0}.section-heading{display:flex;justify-content:space-between;align-items:baseline;gap:20px;border-bottom:2px solid var(--ink);padding-bottom:13px;margin-bottom:22px}.section-heading h2{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:1.7rem;line-height:1.35;margin:0}.section-heading a{font-weight:700;font-size:.88rem;white-space:nowrap}.section-heading span{color:var(--sub);font-size:.85rem}.section-lead{color:var(--sub);margin:-8px 0 24px}.category-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));list-style:none;padding:0;margin:0;gap:12px}.category-grid li{min-width:0}.category-grid a{display:flex;flex-direction:column;min-height:142px;padding:17px;background:var(--white);border:1px solid var(--line);border-left:4px solid var(--blue);text-decoration:none;color:var(--ink)}.category-grid a:hover{border-color:var(--blue);background:#f3f6ff}.category-code{color:var(--blue);font-size:.87rem;font-weight:700}.category-grid strong{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;line-height:1.4;font-size:1.07rem;margin:5px 0 auto;overflow-wrap:anywhere}.category-count{color:var(--sub);font-size:.81rem;margin-top:14px}.book-list{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}.book-row{display:grid;grid-template-columns:9px minmax(0,1fr) auto;gap:18px;align-items:start;padding:19px 2px 19px 0;border-bottom:1px solid var(--line)}.book-spine{height:100%;min-height:64px;background:var(--blue);border-left:2px solid var(--gold)}.book-row:nth-child(5n+2) .book-spine{background:#5d79ba}.book-row:nth-child(5n+3) .book-spine{background:#cf9132}.book-row:nth-child(5n+4) .book-spine{background:#567888}.book-row:nth-child(5n) .book-spine{background:#7c6396}.book-copy h3{font-size:1.04rem;line-height:1.5;margin:0 0 5px}.book-copy h3 a{color:var(--ink);text-decoration:none}.book-copy h3 a:hover{text-decoration:underline;color:var(--blue)}.book-copy p{margin:0;color:var(--sub);font-size:.86rem}.book-meta{display:flex;align-items:center;gap:12px;white-space:nowrap;font-size:.82rem;color:var(--sub)}.book-class{font-weight:700;border:1px solid var(--line);padding:1px 8px;text-decoration:none}.book-class:hover{border-color:var(--blue)}.book-class.muted{color:var(--sub)}.inner{padding-top:30px;padding-bottom:80px;min-height:70vh}.crumb{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 42px;color:var(--sub);font-size:.79rem}.crumb a{color:var(--sub)}.page-heading{padding:0 0 28px;max-width:760px}.page-heading h1{font-size:clamp(2.2rem,4vw,3.5rem)}.page-heading p:last-child{margin-bottom:0;color:var(--sub)}.inner>.search-form{margin:4px 0 24px}.subcategories{margin-top:30px}.subcategories h2{font-size:1.17rem;margin:0 0 14px}.subcategories .category-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.subcategories .category-grid a{min-height:118px}.result-section{padding-top:38px}.next{margin:28px 0 0;text-align:center}.next a{display:inline-block;padding:10px 25px;border:1px solid var(--blue);background:#fff;font-weight:700;text-decoration:none}.next a:hover{background:var(--blue2)}.empty{background:#fff;border:1px solid var(--line);padding:24px}.footnote{color:var(--sub);font-size:.84rem;margin-top:28px}.book-detail{display:grid;grid-template-columns:150px minmax(0,1fr);gap:44px;max-width:900px}.detail-spine{background:var(--blue);border-left:9px solid var(--gold);height:220px;box-shadow:12px 12px 0 var(--blue2);display:flex;align-items:center;justify-content:center;color:#fff;font-size:2rem;font-family:"Yu Mincho",serif;writing-mode:vertical-rl;letter-spacing:.3em}.book-detail h1{font-size:clamp(2rem,4vw,3.2rem);margin-bottom:28px;overflow-wrap:anywhere}.detail-list{margin:0;border-top:1px solid var(--line)}.detail-list div{display:grid;grid-template-columns:98px minmax(0,1fr);gap:14px;padding:12px 0;border-bottom:1px solid var(--line)}.detail-list dt{color:var(--sub);font-size:.84rem}.detail-list dd{margin:0;overflow-wrap:anywhere}.source-link{margin-top:27px}.source-link a{display:inline-block;background:var(--blue);color:#fff;padding:11px 20px;text-decoration:none;font-weight:700}.source-link a:hover{background:#173779}.related{max-width:900px;margin-top:40px}.prose{max-width:820px}.prose h2{font-family:"Yu Mincho",serif;margin:30px 0 10px}.prose p{margin:0 0 13px}.site-footer{border-top:1px solid var(--line);background:#e9eef7}.footer-inner{display:flex;justify-content:space-between;gap:35px;padding:42px 0}.footer-inner strong{font-family:"Yu Mincho",serif;font-size:1.25rem}.footer-inner p{margin:7px 0 0;color:var(--sub);font-size:.85rem}.footer-links{display:flex;flex-wrap:wrap;gap:11px 23px;max-width:510px;font-size:.84rem}.footer-links a{color:var(--ink)}@media(max-width:850px){.category-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.subcategories .category-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.hero-grid{grid-template-columns:minmax(0,1fr) 195px}.hero-main{padding:56px 0}.hero-aside{padding:24px 15px}}@media(max-width:650px){.shell{width:min(100% - 28px,1120px)}.header-inner{align-items:flex-start;flex-direction:column;padding:12px 0;gap:8px}.site-header nav{gap:7px 17px;font-size:.79rem}.hero-grid{display:block}.hero-main{padding:46px 0}.hero-aside{display:none}.hero h1{font-size:2.6rem}.intro{font-size:.96rem}.search-row button{padding:10px 14px}.category-grid,.subcategories .category-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.category-grid a{min-height:124px;padding:12px}.section{padding:45px 0}.section-heading h2{font-size:1.42rem}.book-row{grid-template-columns:6px minmax(0,1fr);gap:11px}.book-meta{grid-column:2;white-space:normal;margin-top:-6px}.inner{padding-top:21px}.crumb{margin-bottom:28px}.book-detail{grid-template-columns:1fr;gap:28px}.detail-spine{height:80px;width:120px;writing-mode:initial;box-shadow:7px 7px 0 var(--blue2)}.footer-inner{display:block}.footer-links{margin-top:25px}}@media(max-width:390px){.category-grid,.subcategories .category-grid{grid-template-columns:1fr}.category-grid a{min-height:90px}.search-row{display:block}.search-row input,.search-row button{width:100%}}
:root{color-scheme:light}
.shop{max-width:900px;margin-top:44px;padding:25px;background:#fff;border:1px solid var(--line)}.shop h2{font-family:"Yu Mincho",serif;font-size:1.5rem;margin:0 0 18px}.shop-groups{display:grid;grid-template-columns:1fr 1fr;gap:20px}.shop-groups>div{display:flex;flex-direction:column;align-items:start;gap:10px;border-top:3px solid var(--blue);padding-top:12px}.shop-groups h3{font-size:.94rem;margin:0 0 2px}.shop-groups a{display:inline-block;font-weight:700}.shop p{font-size:.8rem;color:var(--sub);margin:21px 0 0}@media(max-width:560px){.shop-groups{grid-template-columns:1fr}}