:root{--font-sans:"Noto Sans JP";--font-serif:"Shippori Mincho B1";--font-display:"Fraunces";--paper:#f5efe3;--paper-deep:#ece3d1;--surface:#fffcf6;--ink:#1b2620;--ink-soft:#3d4a42;--muted:#74786d;--line:#e2d8c4;--forest:#1f4d3a;--forest-deep:#143528;--amber:#e0a13a;--terracotta:#b5522e;--radius:14px;--shadow-sm:0 1px 2px #1b26200f, 0 2px 6px #1b26200d;--shadow-md:0 6px 16px #1b26201a, 0 2px 4px #1b26200f;--shadow-lg:0 18px 40px #1b26202e;--font-body:var(--font-sans), "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, sans-serif;--font-heading:var(--font-display), var(--font-serif), "Hiragino Mincho ProN", serif;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth}html,body{margin:0}body{background:var(--paper);min-height:100vh;color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased;flex-direction:column;line-height:1.7;display:flex}main{flex:1}a{color:inherit}button{font:inherit;color:inherit}img{max-width:100%}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}.visually-hidden{clip-path:inset(50%);width:1px;height:1px;position:absolute;overflow:hidden}:focus-visible{outline:2px solid var(--amber);outline-offset:2px}.btn{cursor:pointer;border:1.5px solid #0000;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:12px 22px;font-size:.95rem;font-weight:700;text-decoration:none;transition:transform .15s,background .15s,box-shadow 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var(--line);background:var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%2374786d' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 14px center;cursor:pointer;color:var(--ink);border-radius:999px;padding:8px 34px 8px 14px;font-size:.85rem}.grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:32px 24px;margin:0;padding:0;list-style:none;display:grid}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{flex-direction:column;gap:12px;height:100%;text-decoration:none;display:flex}.card-media{box-shadow:var(--shadow-sm);border-radius:12px;transition:transform .25s,box-shadow .25s;position:relative}.card:hover 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button:hover:not(:disabled){border-color:var(--forest)}.pagination button[aria-current=page]{background:var(--forest);color:var(--paper);border-color:var(--forest)}.pagination button:disabled{opacity:.35;cursor:default}.pagination .gap{color:var(--muted);padding:0 4px}.detail{padding-top:28px;padding-bottom:72px}.breadcrumb{color:var(--muted);flex-wrap:wrap;gap:8px;margin-bottom:28px;font-size:.82rem;display:flex}.breadcrumb a{text-decoration:none}.breadcrumb a:hover{color:var(--forest);text-decoration:underline}.breadcrumb [aria-current]{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;max-width:40ch;overflow:hidden}.detail-body{grid-template-columns:minmax(0,380px) minmax(0,1fr);align-items:start;gap:44px;display:grid}.gallery{position:sticky;top:92px}.gallery-main{box-shadow:var(--shadow-md);border-radius:12px;position:relative}.gallery-thumbs{gap:10px;margin-top:14px;display:flex}.gallery-thumbs button{cursor:pointer;background:0 0;border:2px solid #0000;border-radius:10px;width:64px;padding:0}.gallery-thumbs button[aria-pressed=true]{border-color:var(--forest)}.gallery-thumbs .cover{border-radius:8px}.detail-tags{flex-wrap:wrap;gap:6px;margin-bottom:14px;display:flex}.detail-tags .tag{box-shadow:none;border:1px solid var(--line)}.detail-tags .tag-material{border-color:var(--forest)}.detail h1{font-family:var(--font-display), var(--font-serif), serif;margin:0 0 24px;font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700;line-height:1.3}.buy-box{border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:baseline;gap:20px;margin-bottom:24px;padding-bottom:24px;display:flex}.price.big{font-size:2.2rem}.stock{align-items:center;gap:8px;margin:0;font-size:.9rem;font-weight:700;display:inline-flex}.stock .dot{width:8px;height:8px;box-shadow:0 0 0 4px color-mix(in srgb, currentColor 18%, transparent);background:currentColor;border-radius:50%}.stock.in{color:#2f7a4f}.stock.out{color:var(--terracotta)}.info-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:24px;padding:20px 22px}.info-label{letter-spacing:.12em;color:var(--muted);margin:0 0 8px;font-size:.75rem;font-weight:700}.class-line{flex-wrap:wrap;align-items:center;gap:10px;margin:0 0 4px;font-size:1.05rem;font-weight:700;display:flex}.class-line .class-code{font-size:.8rem}.class-full{color:var(--muted);overflow-wrap:anywhere;margin:0 0 12px;font-size:.8rem}.spec{gap:0;margin:0;display:grid}.spec>div{border-bottom:1px dashed var(--line);grid-template-columns:100px 1fr;gap:16px;padding:12px 0;display:grid}.spec dt{color:var(--muted);font-size:.85rem}.spec dd{margin:0}.related{margin-top:80px}.related .grid{margin-top:24px}.not-found{text-align:center;padding:120px 24px}.not-found h1{font-family:var(--font-serif), serif;margin:0 0 28px}.cart-button{background:var(--forest);color:var(--paper);border-radius:999px;flex-shrink:0;align-items:center;gap:6px;padding:8px 14px;font-size:.9rem;font-weight:700;text-decoration:none;transition:background .15s;display:inline-flex;position:relative}.cart-button:hover{background:var(--forest-deep)}.cart-button svg{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;width:20px;height:20px}.cart-count{background:var(--amber);min-width:20px;height:20px;color:var(--forest-deep);border-radius:999px;place-items:center;padding:0 6px;font-size:.72rem;display:inline-grid}.header-nav{margin-left:auto}.in-cart-badge{background:var(--amber);color:var(--forest-deep)}.btn-block{width:100%}.btn:disabled{background:var(--line);color:var(--muted);cursor:not-allowed;box-shadow:none;transform:none}.text-button{color:var(--terracotta);cursor:pointer;background:0 0;border:none;padding:0;font-size:.85rem;text-decoration:underline}.buy-box{border-bottom:1px solid var(--line);align-items:stretch;gap:14px;margin-bottom:24px;padding-bottom:24px;display:grid}.buy-row{flex-wrap:wrap;align-items:baseline;gap:20px;display:flex}.buy-row .price.big{margin:0}.handover-note{color:var(--muted);margin:0;font-size:.82rem}.page-title{font-family:var(--font-serif), serif;text-wrap:balance;margin:0 0 28px;font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800}.cart-page,.result-page,.legal-page{padding-top:40px;padding-bottom:80px}.cart-empty{text-align:center;color:var(--muted);justify-items:center;gap:16px;padding:56px 0;display:grid}.cart-layout{grid-template-columns:minmax(0,1fr) 340px;align-items:start;gap:40px;display:grid}.cart-list{border-top:1px solid var(--line);gap:0;margin:0;padding:0;list-style:none;display:grid}.cart-item{border-bottom:1px solid var(--line);grid-template-columns:76px minmax(0,1fr) auto;align-items:start;gap:18px;padding:18px 0;display:grid}.cart-thumb .cover{border-radius:8px}.cart-thumb .cover-art{display:none}.cart-info{flex-direction:column;gap:4px;min-width:0;display:flex}.cart-title{font-weight:500;line-height:1.5;text-decoration:none}.cart-title:hover{color:var(--forest);text-decoration:underline}.cart-side{flex-direction:column;align-items:flex-end;gap:8px;display:flex}.cart-item.is-sold .cover{filter:grayscale(.85)opacity(.7)}.cart-item.is-sold .price{color:var(--muted);text-decoration:line-through}.cart-warning{color:var(--terracotta);margin:0;font-size:.82rem;font-weight:700}.summary{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);gap:14px;padding:24px;display:grid;position:sticky;top:92px}.summary h2{margin:0;font-size:1rem}.summary dl{gap:8px;margin:0;display:grid}.summary dl>div{justify-content:space-between;gap:12px;font-size:.9rem;display:flex}.summary dt{color:var(--muted)}.summary dd{text-align:right;margin:0}.summary-total{border-top:1px dashed var(--line);padding-top:10px;font-weight:700}.summary-total dd{font-family:var(--font-display), serif;font-size:1.4rem}.summary-sub,.result-sub{color:var(--muted);font-size:.75rem;display:block}.summary-note{color:var(--muted);margin:0;font-size:.78rem;line-height:1.6}.summary-note a{color:var(--forest)}.form-message{background:color-mix(in srgb, var(--terracotta) 10%, var(--surface));color:var(--terracotta);border-radius:10px;margin:0;padding:12px 14px;font-size:.85rem}.result-page{max-width:640px}.result-page>p{color:var(--ink-soft)}.result-list{border-top:1px solid var(--line);margin:28px 0;padding:0;list-style:none}.result-list li{border-bottom:1px solid var(--line);justify-content:space-between;gap:16px;padding:14px 0;display:flex}.result-list .price{white-space:nowrap;font-size:1.05rem}.result-total{font-weight:700}.legal-page{max-width:820px}.legal-page .spec>div{grid-template-columns:200px minmax(0,1fr)}.catalog-frame{grid-template-columns:240px minmax(0,1fr);align-items:start;gap:40px;display:grid}.catalog-frame>.sidebar{padding-top:28px}.catalog-main{min-width:0}.catalog-main .container{max-width:none;padding-left:0;padding-right:0}.search-compact{flex:none;width:100%;padding:0 14px}.search-compact input{padding:9px 0;font-size:.85rem}.btn-light{background:var(--paper);color:var(--forest-deep);white-space:nowrap}.sell-band{background:linear-gradient(135deg, var(--forest), var(--forest-deep));color:var(--paper);box-shadow:var(--shadow-md);border-radius:20px;justify-content:space-between;align-items:center;gap:32px;margin:64px 0;padding:36px 44px;text-decoration:none;transition:transform .2s;display:flex}.sell-band:hover{transform:translateY(-2px)}.sell-band .eyebrow{color:var(--amber)}.sell-band h2{font-family:var(--font-serif), serif;margin:0 0 6px;font-size:clamp(1.3rem,2.6vw,1.8rem);font-weight:800}.sell-band p:last-child{opacity:.85;margin:0}.sell-page{gap:56px;padding-top:40px;padding-bottom:80px;display:grid}.sell-hero .page-title{margin-bottom:16px}.sell-lead{color:var(--ink-soft);max-width:40em;margin:0 0 24px}.sell-cta{flex-wrap:wrap;align-items:center;gap:12px 16px;display:flex}.sell-cta-note{color:var(--muted);margin:0;font-size:.82rem}.sell-section{gap:16px;display:grid}.sell-section-lead{color:var(--ink-soft);margin:0}.sell-steps{counter-reset:step;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:8px 0 0;padding:0;list-style:none;display:grid}.sell-steps li{counter-increment:step;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 22px 22px 64px;position:relative}.sell-steps li:before{content:counter(step);background:var(--forest);width:30px;height:30px;color:var(--paper);font-family:var(--font-display), serif;border-radius:50%;place-items:center;font-weight:700;display:grid;position:absolute;top:20px;left:20px}.sell-steps h3{margin:2px 0 6px;font-size:1rem}.sell-steps p{color:var(--ink-soft);margin:0;font-size:.88rem}.condition-guide{border-top:1px solid var(--line);margin:0}.condition-guide>div{border-bottom:1px solid var(--line);grid-template-columns:220px minmax(0,1fr);gap:16px;padding:14px 0;display:grid}.condition-guide dt{align-items:center;gap:10px;font-weight:700;display:flex}.condition-guide dd{color:var(--ink-soft);margin:0;font-size:.92rem}.sell-notes ul{color:var(--ink-soft);gap:6px;margin:0;padding-left:1.2em;display:grid}.sell-notes .btn{justify-self:start}.site-footer{background:var(--forest-deep);color:color-mix(in srgb, var(--amber) 70%, var(--paper));text-align:center;padding:48px 0 40px}.footer-inner{flex-direction:column;align-items:center;gap:6px;display:flex}.footer-inner p{margin:0}.footer-company{font-size:1.05rem;font-weight:500}.footer-license{opacity:.85;font-size:.85rem}.footer-inner .footer-license{margin-bottom:22px}.footer-nav{flex-wrap:wrap;justify-content:center;align-items:center;row-gap:6px;display:flex}.footer-nav a{color:inherit;font-size:.92rem;text-decoration:none}.footer-nav a:hover{color:var(--paper);text-decoration:underline}.footer-nav a+a:before{content:"|";opacity:.6;margin:0 12px;text-decoration:none;display:inline-block}.footer-copyright{margin-top:4px;font-size:.88rem}@media (max-width:1000px){.catalog-main .sell-steps{grid-template-columns:minmax(0,1fr)}.catalog-frame{grid-template-columns:200px minmax(0,1fr);gap:28px}.catalog-main .detail-body{grid-template-columns:minmax(0,1fr);gap:28px}.catalog-main .gallery{max-width:340px;position:static}.catalog-main .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(3,minmax(0,1fr))}.shop{grid-template-columns:200px minmax(0,1fr);gap:28px}.grid{gap:28px 16px}}@media (max-width:800px){.container{padding:0 16px}.header-inner{height:60px}.header-nav,.cart-label{display:none}.footer-nav{column-gap:20px}.footer-nav a+a:before{content:none}.cart-button{padding:8px 12px}.brand-name{font-size:1.02rem}.hero-inner{grid-template-columns:minmax(0,1fr);gap:8px;padding-top:40px;padding-bottom:48px}.hero-stack{order:-1;height:230px}.stack-book{width:34%}.hero-actions{margin-bottom:28px}.hero-actions .btn{flex:auto}.hero-stats>div{padding:0 16px}.hero-stats dd{font-size:1.45rem}.browse{padding-bottom:40px}.browse-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.browse-card{padding:14px}.browse-name{font-size:1.15rem}.shop-section{padding:40px 0 56px;scroll-margin-top:60px}.shop-head{flex-direction:column;align-items:stretch;gap:16px;margin-bottom:16px}.search{flex-basis:auto}.shop{grid-template-columns:minmax(0,1fr);gap:16px}.sidebar{position:static}.filter-toggle{background:var(--paper);border:1.5px solid var(--line);cursor:pointer;border-radius:999px;justify-content:space-between;align-items:center;width:100%;padding:12px 18px;font-weight:700;display:flex}.toggle-count{background:var(--forest);min-width:20px;height:20px;color:var(--paper);border-radius:999px;place-items:center;margin-left:8px;font-size:.72rem;display:inline-grid}.sidebar-body{padding:18px 4px 0;display:none}.sidebar.open .sidebar-body{display:block}.grid,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 12px}.cover-art{padding:14px 12px 14px 22px}.cover-art:before{inset:9px 9px 9px 18px}.cover-title{font-size:.92rem}.price{font-size:1.05rem}.detail-body{grid-template-columns:minmax(0,1fr);gap:28px}.gallery{width:100%;max-width:360px;margin:0 auto;position:static}.related{margin-top:56px}.cart-layout{grid-template-columns:minmax(0,1fr);gap:24px}.sell-band{flex-direction:column;align-items:flex-start;margin:48px 0;padding:28px 22px}.sell-steps{grid-template-columns:minmax(0,1fr)}.condition-guide>div{grid-template-columns:minmax(0,1fr);gap:4px}.catalog-frame{grid-template-columns:minmax(0,1fr);gap:0;padding-top:20px}.catalog-main .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.catalog-frame>.sidebar{margin-bottom:20px;padding-top:0}.cart-item{grid-template-columns:64px minmax(0,1fr) auto;gap:12px}.summary{position:static}.legal-page .spec>div{grid-template-columns:minmax(0,1fr);gap:4px}}