:root{--bg: #f7f6f3;--card: #ffffff;--ink: #1f2421;--muted: #6b7280;--accent: #2f6f4f;--accent-ink: #ffffff;--border: #e3e1db;--radius: 8px}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink)}button{cursor:pointer;font-family:inherit}.store{max-width:1140px;margin:0 auto;padding:20px 16px 64px}.store-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.store-header h1{margin:0 0 4px;font-size:1.6rem}.store-header p{margin:0 0 18px;color:var(--muted)}.store-search{display:flex;gap:8px;margin-bottom:18px}.store-search input{flex:1;min-width:0;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:1rem}.store-search button{background:var(--accent);color:var(--accent-ink);border:1px solid var(--accent);border-radius:var(--radius);padding:10px 18px;font-weight:600;min-height:42px}.cart-button{position:relative;background:var(--accent);color:var(--accent-ink);border:none;border-radius:var(--radius);padding:10px 16px;font-size:.95rem;font-weight:600;min-height:40px;white-space:nowrap}.cart-badge{display:inline-block;margin-left:6px;background:#fff;color:var(--accent);border-radius:999px;padding:0 7px;font-size:.8rem}.search-heading{font-size:1.25rem;margin:4px 0 10px}.carousel{margin-top:32px}.carousel-heading{font-size:1.2rem;margin:0 0 14px;padding-top:18px;border-top:1px solid var(--border)}.carousel-track{display:flex;gap:14px;overflow-x:auto;padding-bottom:8px;-webkit-overflow-scrolling:touch;scroll-snap-type:x proximity}.carousel-track::-webkit-scrollbar{height:8px}.carousel-track::-webkit-scrollbar-thumb{background:var(--border);border-radius:999px}.carousel-item{flex:0 0 150px;scroll-snap-align:start}.carousel-item .book-card{height:100%}.store-body{display:flex;gap:20px;align-items:flex-start}.store-sidebar{flex:0 0 230px;position:sticky;top:12px;max-height:calc(100vh - 24px);overflow:auto}.store-main{flex:1 1 auto;min-width:0}.cat-nav{display:flex;flex-direction:column;gap:2px}.cat-group{display:flex;flex-direction:column}.cat-top{text-align:left;background:none;border:none;padding:8px 10px;border-radius:var(--radius);font-size:.95rem;font-weight:600;color:var(--ink)}.cat-top:hover{background:#eef1ee}.cat-top.active{background:var(--accent);color:var(--accent-ink)}.cat-children{display:flex;flex-direction:column;gap:1px;margin:2px 0 6px 8px;border-left:2px solid var(--border);padding-left:6px}.cat-child{text-align:left;background:none;border:none;padding:6px 8px;border-radius:var(--radius);font-size:.88rem;color:var(--muted)}.cat-child:hover{background:#eef1ee;color:var(--ink)}.cat-child.active{background:#e9f3ec;color:var(--accent);font-weight:600}.store-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px;flex-wrap:wrap}.breadcrumb{font-size:.9rem;color:var(--muted)}.crumb{background:none;border:none;color:var(--accent);padding:0;font-size:.9rem}.crumb:hover{text-decoration:underline}.crumb-sep{color:var(--muted)}.sort{font-size:.85rem;color:var(--muted);display:inline-flex;gap:6px;align-items:center}.sort select{padding:6px 8px;border:1px solid var(--border);border-radius:var(--radius);font-size:.9rem;background:var(--card)}.store-count{color:var(--muted);font-size:.85rem;margin:0 0 12px}.store-muted{color:var(--muted);padding:24px 0}.store-error{color:var(--danger, #b23b3b)}.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:16px}.book-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:10px;display:flex;flex-direction:column}.book-card:hover{border-color:var(--accent);box-shadow:0 2px 10px #0000000f}.book-card-body{display:flex;flex-direction:column;flex:1 1 auto}.book-card-body.clickable{cursor:pointer}.source-badge{display:inline-block;align-self:flex-start;font-size:.6rem;line-height:1.2;font-weight:600;padding:2px 7px;border-radius:999px;margin:6px 0}.badge-stock{background:#e9f3ec;color:#1c7a3f;border:1px solid rgba(28,122,63,.25)}.badge-discovery{background:#fff4e5;color:#9a5b00;border:1px solid rgba(154,91,0,.25)}.book-add{margin-top:8px;width:100%;background:var(--accent);color:var(--accent-ink);border:none;border-radius:var(--radius);padding:9px;font-weight:600;min-height:40px}.cart-it-meta{display:flex;gap:8px;align-items:center}.cart-it-tag{font-size:.62rem;background:#fff4e5;color:#9a5b00;border-radius:999px;padding:1px 6px;white-space:nowrap}.book-cover{width:100%;aspect-ratio:2 / 3;object-fit:cover;border-radius:6px;background:#eee}.book-cover--none{display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:.8rem}.book-title{margin:8px 0 2px;font-size:.95rem;line-height:1.25}.book-author{margin:0;font-size:.82rem;color:var(--muted)}.book-foot{margin-top:auto;padding-top:8px;display:flex;justify-content:space-between;align-items:baseline}.book-price{font-weight:700;color:var(--accent)}.book-pages{font-size:.78rem;color:var(--muted)}.pagination{display:flex;gap:12px;align-items:center;justify-content:center;margin:24px 0 0}.pagination button{padding:9px 16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--card);min-height:40px}.pagination button:hover:not([disabled]){border-color:var(--accent)}.pagination button[disabled]{opacity:.5;cursor:default}.pagination-info{color:var(--muted);font-size:.9rem}.brand-link{color:inherit;text-decoration:none}.back-link{background:none;border:none;color:var(--accent);padding:4px 0;font-size:.95rem;margin-bottom:12px}.back-link:hover{text-decoration:underline}.product-top{display:flex;gap:24px;align-items:flex-start}.product-cover{width:220px;aspect-ratio:2/3;object-fit:cover;border-radius:8px;flex:0 0 auto;box-shadow:0 2px 12px #00000014}.product-cover--none{display:flex;align-items:center;justify-content:center;background:#eee;color:var(--muted)}.product-info{min-width:0}.product-title{margin:0 0 4px;font-size:1.7rem;line-height:1.15}.product-author{margin:0 0 10px;color:var(--muted);font-size:1.05rem}.product-meta{margin:0 0 14px}.product-price{font-weight:700;color:var(--accent);font-size:1.3rem}.product-pages{color:var(--muted)}.product-badge{display:inline-block;margin:0 0 14px;font-size:.72rem}.product-add{background:var(--accent);color:var(--accent-ink);border:none;border-radius:var(--radius);padding:12px 26px;font-size:1.05rem;font-weight:600;min-height:46px}.product-desc{margin-top:22px}.product-desc h2{font-size:1.1rem;margin:0 0 8px}.product-desc p{font-size:.95rem;line-height:1.6;color:var(--ink);white-space:pre-wrap;margin:0}.related{margin-top:40px}.related-heading{font-size:1.2rem;margin:0 0 14px;padding-top:16px;border-top:1px solid var(--border)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;padding:16px;z-index:1000}.detail{position:relative;background:var(--card);border-radius:var(--radius);max-width:640px;width:100%;max-height:90vh;overflow:auto;padding:20px}.detail-close{position:absolute;top:8px;right:10px;background:none;border:none;font-size:1.6rem;line-height:1;color:var(--muted)}.detail-body{display:flex;gap:18px}.detail-cover{width:160px;aspect-ratio:2/3;object-fit:cover;border-radius:6px;flex:0 0 auto}.detail-cover--none{display:flex;align-items:center;justify-content:center;background:#eee;color:var(--muted);font-size:.8rem}.detail-info{min-width:0}.detail-title{margin:0 0 4px;font-size:1.3rem}.detail-author{margin:0 0 8px;color:var(--muted)}.detail-meta{margin:0 0 12px}.detail-price{font-weight:700;color:var(--accent);font-size:1.1rem}.detail-pages{color:var(--muted)}.detail-desc{font-size:.92rem;line-height:1.5;color:var(--ink);white-space:pre-wrap}.detail-add{margin-top:14px;background:var(--accent);color:var(--accent-ink);border:none;border-radius:var(--radius);padding:11px 20px;font-size:1rem;font-weight:600;min-height:44px}.cart{background:var(--card);border-radius:var(--radius);max-width:460px;width:100%;max-height:90vh;overflow:auto;padding:18px}.cart-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.cart-head h2{margin:0;font-size:1.2rem}.cart-head button{background:none;border:none;font-size:1.6rem;line-height:1;color:var(--muted)}.cart-items{list-style:none;margin:0 0 12px;padding:0}.cart-items li{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--border)}.cart-thumb{width:36px;height:50px;object-fit:cover;border-radius:4px;flex:0 0 auto}.cart-thumb--none{background:#eee}.cart-it-main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}.cart-it-title{font-size:.9rem}.cart-it-price{font-size:.82rem;color:var(--accent);font-weight:600}.cart-qty{width:56px;padding:6px;border:1px solid var(--border);border-radius:var(--radius)}.cart-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:8px}.cart-total{font-weight:700}.cart-checkout{background:var(--accent);color:var(--accent-ink);border:none;border-radius:var(--radius);padding:11px 20px;font-weight:600;min-height:44px}.store-notice{position:fixed;left:50%;bottom:20px;transform:translate(-50%);background:var(--ink);color:#fff;padding:12px 16px;border-radius:var(--radius);display:flex;gap:12px;align-items:center;max-width:92vw;z-index:1100;box-shadow:0 6px 24px #0000004d}.store-notice button{background:none;border:none;color:#fff;font-size:1.2rem;line-height:1}@media (max-width: 720px){.store-header{flex-direction:row;align-items:center}.store-search{flex-direction:column}.store-search button{min-height:44px}.product-top{flex-direction:column;align-items:center;text-align:center}.product-cover{width:150px}.product-meta,.product-author{text-align:center}.store-body{flex-direction:column}.store-sidebar{position:static;flex:none;width:100%;max-height:none;overflow:visible}.cat-nav{flex-direction:row;flex-wrap:nowrap;overflow-x:auto;gap:6px;padding-bottom:6px;-webkit-overflow-scrolling:touch}.cat-group{flex-direction:row;align-items:center;flex:0 0 auto}.cat-top{white-space:nowrap;border:1px solid var(--border)}.cat-children{flex-direction:row;flex-wrap:nowrap;margin:0 0 0 6px;border-left:none;padding-left:0}.cat-child{white-space:nowrap;border:1px solid var(--border)}.book-grid{grid-template-columns:repeat(2,1fr);gap:12px}.store-toolbar{gap:8px}}.checkout h2{margin:0 0 18px}.checkout-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:start}.checkout-form{display:flex;flex-direction:column;gap:14px}.checkout-form h3,.checkout-summary h3{margin:0 0 6px;font-size:1.05rem}.checkout-form label{display:flex;flex-direction:column;gap:5px;font-size:.9rem;font-weight:600;color:var(--ink)}.checkout-form input,.checkout-form textarea{padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:1rem;font-family:inherit;font-weight:400}.checkout-form textarea{resize:vertical}.checkout-note{font-size:.82rem;color:var(--muted);margin:4px 0 0}.checkout-error{color:#b42318;background:#fef3f2;border:1px solid #fecdca;border-radius:var(--radius);padding:8px 10px;margin:0;font-size:.9rem}.checkout-summary{background:#faf9f7;border:1px solid var(--border);border-radius:var(--radius);padding:16px}.checkout-items,.order-items{list-style:none;margin:0 0 12px;padding:0;display:flex;flex-direction:column;gap:10px}.checkout-items li{display:flex;gap:10px;align-items:center}.checkout-total{display:flex;justify-content:space-between;align-items:baseline;border-top:1px solid var(--border);padding-top:12px;font-size:1.05rem}.checkout-total strong{font-size:1.25rem;color:var(--accent)}.cart-checkout:disabled{opacity:.6}.order-status{max-width:640px}.order-banner{border-radius:var(--radius);padding:18px 20px;margin-bottom:16px}.order-banner h2{margin:0 0 6px}.order-paid{background:#ecfdf3;border:1px solid #abefc6}.order-paid h2{color:#067647}.order-pending{background:#fffaeb;border:1px solid #fedf89}.order-pending h2{color:#b54708}.order-failed{background:#fef3f2;border:1px solid #fecdca}.order-failed h2{color:#b42318}.order-ref{margin:0;color:var(--muted)}.link-back{display:inline-block;margin-top:18px;color:var(--accent);font-weight:600;text-decoration:none}@media (max-width: 720px){.checkout-grid{grid-template-columns:1fr;gap:18px}.checkout-summary{order:-1}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}.format-picker{display:flex;gap:10px;border:none;padding:0;margin:0 0 14px}.format-picker label{flex:1;display:flex;flex-direction:column;gap:2px;border:1px solid var(--border);border-radius:var(--radius);padding:10px 12px;cursor:pointer;position:relative}.format-picker label.active{border-color:var(--accent);background:#eef6f1}.format-picker label span{font-weight:600;font-size:.95rem}.format-picker label small{color:var(--muted);font-size:.78rem}.format-picker input{position:absolute;top:10px;right:10px;accent-color:var(--accent)}.cart-qty--fixed{display:inline-flex;align-items:center;justify-content:center;min-width:32px;color:var(--muted)}.order-downloads{background:#eef6f1;border:1px solid #abefc6;border-radius:var(--radius);padding:14px 16px;margin:14px 0}.order-downloads h3{margin:0 0 4px}.order-downloads ul{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}.download-btn{display:inline-block;background:var(--accent);color:var(--accent-ink);text-decoration:none;font-weight:600;padding:9px 16px;border-radius:var(--radius)}.store-header-actions{display:flex;align-items:center;gap:10px}.account-link{background:none;border:1px solid var(--border);border-radius:var(--radius);padding:9px 14px;font-size:.9rem;font-weight:600;color:var(--ink);text-decoration:none;cursor:pointer;white-space:nowrap}.account-link:hover{border-color:var(--accent);color:var(--accent)}.auth-modal{background:#fff;border-radius:var(--radius);width:min(92vw,380px);margin:10vh auto;box-shadow:0 10px 40px #0003;overflow:hidden}.auth-tabs{display:flex;align-items:center;border-bottom:1px solid var(--border)}.auth-tabs button{flex:1;background:none;border:none;padding:14px;font-size:.95rem;font-weight:600;color:var(--muted);cursor:pointer}.auth-tabs button.active{color:var(--accent);box-shadow:inset 0 -2px 0 var(--accent)}.auth-tabs .auth-close{flex:0 0 auto;width:44px;font-size:1.3rem;color:var(--muted);box-shadow:none}.auth-form{display:flex;flex-direction:column;gap:12px;padding:18px}.auth-form label{display:flex;flex-direction:column;gap:5px;font-size:.85rem;font-weight:600}.auth-form input{padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:1rem;font-weight:400}.account-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.account-signout{background:none;border:1px solid var(--border);border-radius:var(--radius);padding:8px 14px;font-weight:600;color:var(--muted);cursor:pointer}.account-orders{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-direction:column;gap:14px}.account-order{border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px}.account-order-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.account-order-ref{font-weight:700}.account-order-total{margin-left:auto;font-weight:700;color:var(--accent)}.order-status-pill{font-size:.75rem;font-weight:700;text-transform:uppercase;padding:2px 8px;border-radius:999px;background:#f1f0ec;color:var(--muted)}.order-status-pill.order-paid{background:#ecfdf3;color:#067647}.order-status-pill.order-pending{background:#fffaeb;color:#b54708}.order-status-pill.order-cancelled,.order-status-pill.order-failed{background:#fef3f2;color:#b42318}.account-order-items{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-direction:column;gap:4px;font-size:.92rem}.account-order-items li{display:flex;justify-content:space-between;gap:10px}.account-downloads{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.tabs{margin:28px 0 8px}.tab-bar{display:flex;gap:4px;border-bottom:1px solid var(--border)}.tab{background:none;border:none;padding:12px 18px;font-size:.98rem;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}.tab:hover{color:var(--ink)}.tab.active{color:var(--accent);border-bottom-color:var(--accent)}.tab-panel{padding:18px 2px;line-height:1.6}.product-desc-text{margin:0;white-space:pre-line}.detail-list{display:grid;grid-template-columns:max-content 1fr;gap:8px 24px;margin:0}.detail-list dt{font-weight:600;color:var(--muted)}.detail-list dd{margin:0}.stars{display:inline-flex;gap:1px;line-height:1}.stars .star{color:#d8d6d0;font-size:1.05rem}.stars .star.on{color:#f5a623}.stars-input .star{background:none;border:none;cursor:pointer;font-size:1.5rem;padding:0 2px;color:#d8d6d0}.stars-input .star.on{color:#f5a623}.product-rating{display:flex;align-items:center;gap:8px;margin:0 0 6px;font-size:.9rem}.reviews-summary{display:flex;align-items:center;gap:8px;margin-bottom:14px}.reviews-avg{font-weight:700;font-size:1.1rem}.review-list{list-style:none;margin:0 0 20px;padding:0;display:flex;flex-direction:column;gap:16px}.review{border-bottom:1px solid var(--border);padding-bottom:14px}.review-head{display:flex;align-items:center;gap:10px}.review-name{font-weight:600}.review-verified{font-size:.72rem;font-weight:700;text-transform:uppercase;color:#067647;background:#ecfdf3;border-radius:999px;padding:2px 8px}.review-title{font-weight:600;margin:6px 0 2px}.review-body{margin:2px 0 0;color:var(--ink)}.review-form{display:flex;flex-direction:column;gap:10px;max-width:520px;border-top:1px solid var(--border);padding-top:16px}.review-form h3{margin:0}.review-form input,.review-form textarea{padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:1rem;font-family:inherit}.review-form .cart-checkout{align-self:flex-start}.review-signin{margin-top:12px}.book-ebook{display:inline-block;margin-top:4px;font-size:.78rem;color:var(--accent);font-weight:600}.save-pill{display:inline-block;margin-top:4px;background:#ecfdf3;color:#067647;font-size:.72rem;font-weight:700;padding:2px 8px;border-radius:999px}.format-picker label,.book-card{position:relative}.wish-btn{background:none;border:none;cursor:pointer;color:var(--muted);line-height:1;padding:0}.wish-btn.on{color:#e0245e}.wish-on-card{position:absolute;top:8px;right:8px;z-index:2;font-size:1.4rem;width:34px;height:34px;border-radius:999px;background:#ffffffe6;box-shadow:0 1px 4px #0000001f}.product-actions{display:flex;align-items:center;gap:12px}.wish-on-product{font-size:1.7rem}.wish-link{display:inline-flex;align-items:center;gap:2px;color:#e0245e}.toolbar-controls{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.price-filter{display:flex;align-items:center;gap:6px}.price-filter input{width:84px;padding:7px 9px;border:1px solid var(--border);border-radius:var(--radius);font-size:.9rem}.price-filter button{background:var(--accent);color:var(--accent-ink);border:none;border-radius:var(--radius);padding:7px 12px;font-weight:600;cursor:pointer}.price-filter .price-clear{background:none;color:var(--muted);border:1px solid var(--border)}.price-dash{color:var(--muted)}.view-toggle{display:inline-flex;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.view-toggle button{background:#fff;border:none;padding:7px 11px;cursor:pointer;font-size:1rem;color:var(--muted)}.view-toggle button.active{background:var(--accent);color:var(--accent-ink)}.book-grid--list{display:flex;flex-direction:column;gap:12px}.book-grid--list .book-card{flex-direction:row}.book-grid--list .book-card-body{display:grid;grid-template-columns:64px 1fr;grid-template-areas:"cover title" "cover author" "cover badge" "cover foot";gap:2px 14px;align-items:start;text-align:left}.book-grid--list .book-cover{grid-area:cover;width:64px;height:92px}.book-grid--list .book-title{grid-area:title;margin:0}.book-grid--list .book-author{grid-area:author}.book-grid--list .source-badge{grid-area:badge;justify-self:start}.book-grid--list .book-foot{grid-area:foot}.book-grid--list .book-ebook{grid-area:foot;justify-self:end}.book-grid--list .book-add{align-self:center}.category-hero{margin:0 0 16px;padding:18px 20px;background:#faf9f7;border:1px solid var(--border);border-radius:var(--radius)}.category-hero h2{margin:0 0 4px}.category-hero-desc{margin:4px 0 8px;color:var(--muted);max-width:70ch;line-height:1.5}.category-hero-count{font-size:.85rem;font-weight:600;color:var(--accent)}.author-link{color:var(--accent);text-decoration:none;font-weight:600}.author-link:hover{text-decoration:underline}.author-hero{display:flex;align-items:center;gap:16px;margin:0 0 18px;padding:18px 20px;background:#faf9f7;border:1px solid var(--border);border-radius:var(--radius)}.author-hero h2{margin:0}.author-avatar{width:72px;height:72px;border-radius:999px;object-fit:cover}.author-avatar--none{display:flex;align-items:center;justify-content:center;background:var(--accent);color:var(--accent-ink);font-size:1.8rem;font-weight:700;text-transform:uppercase}