:root{color:#15211e;background:#f5f8fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--ink: #172033;--muted: #667085;--line: #d9e2ea;--paper: #ffffff;--soft: #eef6ff;--accent: #2563eb;--accent-strong: #1d4ed8;--accent-soft: #dbeafe;--warm: #f59e0b;--danger: #d83b55;--success: #16855c;--warning: #9a6a10;--shadow: 0 18px 50px rgba(31, 65, 118, .12)}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}code{padding:2px 5px;border-radius:5px;background:var(--soft)}.app-shell{min-height:100vh;background:radial-gradient(circle at top left,rgba(37,99,235,.16),transparent 34rem),radial-gradient(circle at 80% 10%,rgba(245,158,11,.13),transparent 28rem),linear-gradient(180deg,#f7fbff,#edf4ff)}.topbar{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:minmax(150px,220px) 1fr auto;gap:16px;align-items:center;padding:14px clamp(16px,3vw,36px);border-bottom:1px solid rgba(219,230,228,.9);background:#ffffffdb;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.brand{display:grid;gap:2px;width:fit-content;padding:0;color:var(--ink);text-align:left;border:0;background:transparent}.brand span{font-size:1.25rem;font-weight:900;color:var(--accent-strong)}.brand small{color:var(--muted);font-size:.76rem}.nav-tabs{display:flex;gap:8px;justify-content:safe center;min-width:0;overflow-x:auto}.nav-tabs button,.account-pill,.ghost-btn,.primary-btn,.danger-btn,.text-btn,.primary-link{min-height:40px;border-radius:8px;border:1px solid transparent;transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease}.nav-tabs button{flex:0 0 auto;padding:9px 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button{padding:10px;color:var(--ink);text-align:left;border:0;border-radius:8px;background:transparent}.dropdown-menu button:hover{background:var(--soft)}.admin-title{color:var(--muted);font-weight:850}.admin-dashboard{display:grid;gap:18px}.admin-hero{display:grid;gap:18px;padding:22px;border:1px solid rgba(217,226,234,.85);border-radius:8px;background:linear-gradient(135deg,#2563eb1f,#f59e0b1f),#ffffffe6;box-shadow:var(--shadow)}.admin-hero h1{margin:0;font-size:clamp(2rem,4vw,3.5rem)}.admin-tabs{display:flex;flex-wrap:wrap;gap:10px}.admin-tabs button{min-height:42px;padding:10px 15px;color:var(--ink);border:1px solid transparent;border-radius:8px;background:#fff;font-weight:850}.admin-tabs button:nth-child(1){background:#dbeafe}.admin-tabs button:nth-child(2){background:#dcfce7}.admin-tabs button:nth-child(3){background:#fef3c7}.admin-tabs button.active{color:#fff;background:linear-gradient(135deg,var(--accent),#4f46e5);box-shadow:0 12px 26px #2563eb3d}.admin-section{display:grid;gap:18px}.gradient-panel{background:radial-gradient(circle at top left,rgba(37,99,235,.12),transparent 18rem),radial-gradient(circle at bottom right,rgba(245,158,11,.13),transparent 18rem),#fff}.overview-grid{display:grid;grid-template-columns:minmax(160px,220px) repeat(3,minmax(0,1fr));gap:12px;align-items:stretch}.month-picker{display:grid;gap:8px;padding:16px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--muted);font-weight:850}.admin-search-form{display:grid;grid-template-columns:minmax(0,1fr) minmax(140px,180px) auto;gap:12px;align-items:end;margin-bottom:16px}.admin-search-form label{display:grid;gap:7px;color:var(--muted);font-size:.9rem;font-weight:750}.bestseller-search-form{grid-template-columns:minmax(180px,260px) auto;justify-content:start}.bestseller-table td:first-child{width:90px;color:var(--accent-strong)}.table-wrap{width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:8px;background:#fff}.data-table{width:100%;border-collapse:collapse;min-width:760px}.data-table th,.data-table td{padding:13px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}.data-table th{color:#344054;background:#f8fbff;font-size:.85rem;text-transform:uppercase}.data-table tr:nth-child(2n) td{background:#fbfdff}.product-table td:first-child{min-width:220px}.row-action-inline{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.admin-modal{display:grid;gap:16px;padding:18px}.admin-modal h2{margin:0 34px 0 0}main{width:min(1440px,100%);margin:0 auto;padding:22px clamp(16px,3vw,36px) 50px}.hero-band{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(260px,.65fr);gap:clamp(18px,4vw,54px);align-items:end;padding:clamp(28px,6vw,70px) 0 28px}.hero-band h1{max-width:860px;margin:0;color:#0e1715;font-size:clamp(2.2rem,5vw,5rem);line-height:.98;letter-spacing:0}.hero-band p{max-width:700px;color:var(--muted);font-size:1.04rem;line-height:1.65}.hero-panel{display:grid;gap:12px}.eyebrow{margin:0 0 8px;color:var(--accent);font-size:.78rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.message-stack{display:grid;gap:8px;margin-bottom:18px}.message{padding:12px 14px;border-radius:8px;border:1px solid;background:var(--paper)}.message.loading{color:var(--warning);border-color:#9a6a104d}.message.success{color:var(--success);border-color:#16855c4d}.message.error{color:var(--danger);border-color:#d83b554d}.content-grid{display:grid;gap:18px;align-items:start;animation:lift-in .26s ease both}.shop-layout{grid-template-columns:minmax(240px,300px) minmax(0,1fr)}.cart-layout,.orders-layout{grid-template-columns:minmax(0,1fr) minmax(300px,420px)}.account-layout,.admin-layout{grid-template-columns:repeat(3,minmax(0,1fr))}.side-panel,.panel,.stat-card,.detail-drawer{border:1px solid var(--line);border-radius:8px;background:#fffffff0;box-shadow:var(--shadow)}.side-panel,.panel{padding:18px}.side-panel,.checkout-panel{position:sticky;top:86px}.side-panel h2,.panel h2,.section-heading h2{margin:0 0 14px;font-size:1.5rem;letter-spacing:0}.section-heading{display:flex;gap:14px;justify-content:space-between;align-items:center;margin-bottom:14px}.clean-heading{padding-bottom:8px;border-bottom:1px solid rgba(217,226,234,.75)}.section-heading h1{margin:0;font-size:clamp(2rem,4vw,3.4rem);line-height:1.02;letter-spacing:0}.section-heading span{color:var(--muted)}.shop-page,.cart-page,.auth-page,.orders-page{display:grid;gap:18px;animation:lift-in .26s ease both}.catalog-heading{margin-bottom:0;padding-bottom:20px}.catalog-heading h1{font-size:clamp(1.8rem,3vw,2.6rem);line-height:1.2}.catalog-heading p{margin-top:10px}.catalog-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:26px;align-items:start}.category-panel{position:sticky;top:92px;min-width:0;padding:20px 12px 12px;border:1px solid var(--line);border-radius:12px;background:var(--paper);box-shadow:0 8px 24px #1f41760d}.category-heading{display:flex;gap:10px;align-items:center;padding-inline:8px}.category-heading svg{flex:0 0 20px;width:20px;height:20px;color:var(--accent)}.category-heading h2{margin:0;font-size:1rem}.category-hint{margin:8px 8px 18px;color:var(--muted);font-size:.8rem;line-height:1.5}.category-list{display:grid;gap:5px;max-height:calc(100dvh - 220px);overflow-y:auto;padding:3px;scrollbar-width:thin}.category-button{display:flex;gap:12px;align-items:center;justify-content:space-between;width:100%;min-height:44px;padding:11px 12px;border:1px solid transparent;border-radius:8px;color:var(--muted);background:transparent;text-align:left;font-size:.9rem;line-height:1.4;overflow-wrap:anywhere;transition:background .16s ease,color .16s ease,border-color .16s ease}.category-button:hover{color:var(--accent-strong);background:var(--soft)}.category-button.active{border-color:#bfdbfe;color:var(--accent-strong);background:#eff6ff;font-weight:750}.category-indicator{flex-shrink:0;font-size:1rem}.category-button:focus-visible,.catalog-content button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.catalog-content{display:grid;gap:20px;min-width:0}.catalog-content .book-meta{flex-wrap:wrap}.catalog-search{display:flex;gap:10px;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--paper)}.catalog-search-field{position:relative;flex:1;min-width:0}.catalog-search-field .search-icon{position:absolute;top:14px;left:15px;width:14px;height:14px;color:var(--muted);pointer-events:none}.catalog-search-field input{height:100%;min-height:44px;padding-left:44px;background:#f8fafc}.catalog-search button{flex-shrink:0}.catalog-results-heading{display:flex;flex-wrap:wrap;gap:10px 16px;justify-content:space-between;align-items:center}.catalog-results-heading h2{margin:0 0 4px;font-size:1.25rem;overflow-wrap:anywhere}.catalog-results-heading p{font-size:.85rem}.catalog-filter-summary{display:flex;flex-wrap:wrap;gap:8px;margin-top:-6px}.catalog-filter-summary span{padding:6px 10px;border:1px solid #bfdbfe;border-radius:6px;color:var(--accent-strong);background:#eff6ff;font-size:.8rem;overflow-wrap:anywhere}.catalog-loading{display:flex;gap:12px;align-items:center;justify-content:center;min-height:260px;color:var(--muted)}.catalog-spinner{width:22px;height:22px;border:2px solid var(--accent-soft);border-top-color:var(--accent);border-radius:50%;animation:catalog-spin .7s linear infinite}@keyframes catalog-spin{to{transform:rotate(360deg)}}.about-page{display:grid;gap:30px;max-width:1160px;margin-inline:auto}.about-hero{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(220px,1fr);gap:32px;align-items:center;padding:clamp(24px,4vw,44px);border:1px solid #bfdbfe;border-radius:12px;background:linear-gradient(120deg,#eff6ff,#fff)}.about-eyebrow{color:var(--accent-strong);font-size:.85rem;font-weight:750}.about-hero h1{margin:12px 0 16px;font-size:clamp(1.8rem,3vw,2.7rem);line-height:1.2}.about-page p,.about-values li{margin:0;color:var(--muted);line-height:1.75}.about-reading-note{display:grid;justify-items:center;gap:16px;padding:20px;text-align:center}.about-reading-note svg{width:80px;height:80px;color:var(--accent)}.about-reading-note p{color:var(--accent-strong);font-size:1.15rem}.about-page h2{margin:0 0 16px;font-size:1.3rem;line-height:1.4}.about-story{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:32px;align-items:start}.about-story p+p{margin-top:12px}.about-values,.about-feature{padding:24px;border:1px solid var(--line);border-radius:12px;background:var(--paper)}.about-values ul{display:grid;gap:10px;margin:0;padding-left:20px}.about-values li::marker{color:var(--accent)}.about-features{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.about-feature h3{margin:0 0 12px;color:var(--accent-strong);font-size:1.05rem;line-height:1.5}.about-feature p,.about-values li{font-size:.92rem}.about-start{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;padding:24px;border:1px solid #bfdbfe;border-radius:12px;background:#eff6ff}.about-start>div:first-child{flex:1 1 320px}.about-start h2{margin-bottom:8px}.about-page button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.buying-guide-page{display:grid;gap:26px;max-width:1160px;margin-inline:auto}.buying-guide-intro{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;padding:clamp(20px,3vw,32px);border:1px solid #bfdbfe;border-radius:12px;background:linear-gradient(120deg,#eff6ff,#fff)}.buying-guide-intro>div:first-child{flex:1 1 420px}.buying-guide-eyebrow{color:var(--accent-strong);font-size:.85rem;font-weight:750}.buying-guide-intro h1{margin:10px 0 12px;font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.2}.buying-guide-intro p,.buying-guide-step p,.buying-guide-faq p,.buying-guide-note li{margin:0;color:var(--muted);line-height:1.7}.buying-guide-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:0;padding:0;list-style:none}.buying-guide-step{padding:24px;border:1px solid var(--line);border-radius:12px;background:var(--paper)}.buying-guide-number{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:12px;color:var(--accent-strong);background:var(--accent-soft);font-size:1.05rem;font-weight:850}.buying-guide-step h2{margin:18px 0 10px;font-size:1.1rem;line-height:1.4}.buying-guide-step p,.buying-guide-faq p,.buying-guide-note li{font-size:.92rem}.buying-guide-step strong{color:var(--ink);font-weight:650}.buying-guide-help{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:24px;align-items:start}.buying-guide-help h2{margin:0 0 16px;font-size:1.2rem}.buying-guide-faq details{margin-bottom:10px;border:1px solid var(--line);border-radius:8px;background:var(--paper)}.buying-guide-faq summary{padding:16px 18px;cursor:pointer;font-weight:650;line-height:1.5}.buying-guide-faq summary::marker{color:var(--accent)}.buying-guide-faq p{padding:0 18px 18px}.buying-guide-page :is(button,summary):focus-visible{outline:2px solid var(--accent);outline-offset:3px}.buying-guide-note{padding:24px;border:1px solid #bfdbfe;border-radius:12px;background:#eff6ff}.buying-guide-note ul{display:grid;gap:10px;margin:0;padding-left:20px}.buying-guide-note .text-btn{margin-top:12px;text-align:left}.modal-backdrop{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:18px;background:#0f172a61;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.modal-card{position:relative;width:min(620px,100%);max-height:calc(100vh - 36px);overflow:auto;border:1px solid rgba(217,226,234,.95);border-radius:8px;background:#fff;box-shadow:0 28px 80px #0f172a3d;animation:drawer-in .18s ease both}.search-modal{padding:18px}.book-detail-backdrop{width:100vw;height:100dvh;padding:0;overflow:hidden}.book-detail-modal{position:fixed;top:50%;left:50%;width:min(680px,calc(100vw - 28px));max-height:min(78dvh,560px);padding:10px;overflow:hidden;transform:translate(-50%,-50%);animation:detail-modal-in .18s ease both}.book-detail-layout{display:grid;grid-template-columns:minmax(140px,190px) minmax(0,1fr);gap:12px;align-items:stretch;height:min(430px,calc(78dvh - 20px));min-height:0}.book-detail-modal .detail-cover{min-height:0;height:100%;max-height:none}.book-detail-modal .detail-content{display:flex;flex-direction:column;gap:17px;min-width:0;min-height:0;overflow:hidden}.book-detail-modal h2{display:-webkit-box;margin-right:42px;margin-bottom:1px;overflow:hidden;font-size:1.08rem;line-height:1.24;-webkit-box-orient:vertical;-webkit-line-clamp:2}.detail-summary{display:-webkit-box;min-height:0;max-height:86px;margin-bottom:2px;padding:5px;overflow:hidden;border:1px solid #dbeafe;border-radius:8px;background:#f8fbff;line-height:1.35;font-size:.86rem;-webkit-box-orient:vertical;-webkit-line-clamp:4}.book-detail-modal .detail-content p:not(.detail-summary){margin-block:1px;overflow:hidden;text-overflow:ellipsis;line-height:1.5;white-space:nowrap}.book-detail-modal .detail-content strong{font-size:1.1rem;line-height:1.2;margin-top:6px;margin-bottom:10px}.book-detail-modal .primary-btn{min-height:38px;margin-top:auto;padding-block:8px}.search-panel{display:grid;gap:16px}.search-panel h2,.order-detail-modal h2{margin:0 34px 4px 0}.cart-footer{display:flex;justify-content:flex-end;padding-top:4px}.checkout-review{display:grid;gap:16px;background:linear-gradient(180deg,#fff,#f8fbff)}.checkout-modal{width:min(780px,calc(100vw - 32px));padding:18px}.checkout-modal .section-heading{padding-right:92px}.checkout-modal .section-heading strong{white-space:nowrap}.checkout-item-list{max-height:min(320px,42vh);overflow:auto;padding-right:4px}.checkout-form{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(220px,.55fr) auto;gap:12px;align-items:end}.checkout-actions{display:grid;gap:8px}.checkout-form label{display:grid;gap:7px;color:var(--muted);font-size:.9rem;font-weight:750}.auth-page{justify-items:center}.auth-panel,.profile-panel{width:min(560px,100%)}.profile-panel{display:grid;gap:18px}.auth-panel h1,.profile-panel h1{margin:0}.profile-readonly{display:grid;grid-template-columns:160px minmax(0,1fr);gap:10px 14px;padding:14px;border:1px solid var(--line);border-radius:8px;background:#fff}.form-actions{display:flex;flex-wrap:wrap;gap:10px}.order-detail-modal{display:grid;gap:14px;padding:18px}.profile-readonly span{color:var(--muted)}.stack-form{display:grid;gap:12px}.stack-form label,.admin-controls label{display:grid;gap:7px;color:var(--muted);font-size:.9rem;font-weight:750}input,select,textarea{width:100%;padding:11px 12px;color:var(--ink);border:1px solid var(--line);border-radius:8px;outline:none;background:#fff}textarea{resize:vertical}input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px #0f766e24}.two-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.primary-btn,.ghost-btn,.danger-btn,.text-btn,.primary-link{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 14px;font-weight:850;text-decoration:none}.primary-btn,.primary-link{color:#fff;border-color:var(--accent);background:var(--accent)}.primary-btn:hover,.primary-link:hover,.account-pill:hover{background:var(--accent-strong);box-shadow:0 10px 22px #0f766e38;transform:translateY(-1px)}.ghost-btn{color:var(--ink);border-color:var(--line);background:#fff}.ghost-btn:hover{border-color:#b9cbc7;background:var(--soft);transform:translateY(-1px)}.danger-btn{color:#fff;border-color:var(--danger);background:var(--danger)}.danger-btn:hover{transform:translateY(-1px);box-shadow:0 10px 22px #d83b5533}.text-btn{width:fit-content;padding-inline:0;color:var(--accent);border:0;background:transparent}.wide{width:100%}.book-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px 16px}.pagination-bar{display:flex;gap:12px;justify-content:center;align-items:center;margin-top:4px}.pagination-bar span{color:var(--muted);font-weight:850}.book-card{display:grid;grid-template-rows:250px 1fr auto;min-width:0;overflow:hidden;border:1px solid var(--line);border-radius:8px;background:var(--paper);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.book-card:hover{border-color:#b8d8d2;box-shadow:0 20px 44px #18394124;transform:translateY(-3px)}.book-cover{display:grid;place-items:center;min-width:0;background:linear-gradient(135deg,#eef6f8,#dcefed);overflow:hidden}.book-cover img,.detail-cover img{width:100%;height:100%;object-fit:cover}.image-fallback{display:grid;place-items:center;width:100%;height:100%;color:#fff;background:linear-gradient(135deg,#0f766ef2,#1f8a70db),#0f766e}.image-fallback span{display:grid;place-items:center;width:82px;height:112px;border:2px solid rgba(255,255,255,.72);border-radius:8px;font-size:1.8rem;font-weight:900;text-transform:uppercase}.book-body{display:grid;gap:8px;padding:14px}.book-body h3{display:-webkit-box;margin:0;min-height:2.8em;overflow:hidden;font-size:1.05rem;line-height:1.35;-webkit-box-orient:vertical;-webkit-line-clamp:2}.book-body p,.muted-text{margin:0;color:var(--muted);line-height:1.5}.book-meta{display:flex;gap:8px;justify-content:space-between;align-items:center}.book-meta span{color:var(--muted);font-size:.9rem}.tag{width:fit-content;padding:4px 8px;color:var(--accent-strong);border-radius:999px;background:#0f766e1c;font-size:.75rem;font-weight:850}.card-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 14px 14px}.empty-state{margin-top:10px;padding:22px;color:var(--muted);border:1px dashed var(--line);border-radius:8px;background:#ffffffa6}.detail-drawer{position:fixed;right:clamp(16px,3vw,34px);bottom:24px;z-index:30;display:grid;grid-template-columns:180px minmax(0,280px);gap:16px;max-width:min(560px,calc(100vw - 32px));padding:16px;animation:drawer-in .22s ease both}.detail-cover{min-height:250px;overflow:hidden;border-radius:8px;background:var(--soft)}.detail-content{display:grid;align-content:start;gap:10px}.detail-drawer h2{margin:0}.detail-drawer p{margin:0;color:var(--muted)}.detail-drawer strong{font-size:1.3rem}.close-btn{position:absolute;top:10px;right:10px;padding:7px 10px;color:var(--muted);border:1px solid var(--line);border-radius:8px;background:#fff}.stat-card{display:grid;gap:4px;padding:18px}.stat-card span,.stat-card small{color:var(--muted)}.stat-card strong{font-size:1.7rem}.cart-list,.order-list,.seller-list,.delete-list,.simple-list{display:grid;gap:10px}.delete-list{margin-top:14px}.cart-row,.order-row,.simple-row{display:grid;gap:12px;align-items:center;padding:12px;border:1px solid var(--line);border-radius:8px;background:#fff}.cart-row{grid-template-columns:minmax(0,1fr) 92px auto}.order-row{grid-template-columns:minmax(0,1.2fr) minmax(130px,.5fr) auto}.simple-row{grid-template-columns:minmax(0,1fr) auto auto}.cart-row div,.order-row div{display:grid;gap:4px;min-width:0}.cart-row span,.order-row span,.profile-summary span{color:var(--muted);overflow-wrap:anywhere}.row-actions{display:grid;gap:8px}.payment-box{display:grid;gap:10px;margin-top:16px;padding:12px;border:1px solid var(--line);border-radius:8px;background:#fff}.payment-box img{width:min(220px,100%);border-radius:8px}.payment-box pre{max-height:210px;overflow:auto;margin:0;padding:10px;border-radius:8px;color:#fff;background:#101918;font-size:.8rem}.profile-summary{display:grid;gap:8px;margin-bottom:16px}.admin-controls{max-width:180px;margin-bottom:16px}.stats-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:16px}@keyframes lift-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes drawer-in{0%{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes detail-modal-in{0%{opacity:0;transform:translate(-50%,calc(-50% + 14px)) scale(.98)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}@media(max-width:1280px){.catalog-content .book-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:1100px){.buying-guide-steps{grid-template-columns:repeat(2,minmax(0,1fr))}.catalog-layout{grid-template-columns:minmax(0,1fr);gap:20px}.category-panel{position:static;padding:14px 12px 10px}.category-hint{margin-bottom:10px}.category-list{display:flex;gap:8px;max-height:none;overflow-x:auto;padding-bottom:6px}.category-button{flex:0 0 auto;width:auto;border-color:var(--line);white-space:nowrap}.category-indicator{display:none}.topbar{grid-template-columns:1fr}.nav-tabs{justify-content:start}.account-pill{justify-self:start}.auth-actions,.account-menu{justify-content:start}.shop-layout,.cart-layout,.orders-layout,.account-layout,.admin-layout,.overview-grid,.admin-search-form{grid-template-columns:1fr}.side-panel,.checkout-panel{position:static}.book-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:780px){.about-hero,.about-story,.about-features{grid-template-columns:minmax(0,1fr)}.about-hero{gap:20px}.about-reading-note{padding:16px 0 0;border-top:1px solid #bfdbfe}.about-start>div:first-child{flex-basis:100%}.buying-guide-steps,.buying-guide-help{grid-template-columns:minmax(0,1fr)}.buying-guide-intro>div:first-child{flex-basis:100%}.catalog-search{flex-wrap:wrap}.catalog-search-field{flex-basis:100%}.catalog-search button{flex:1}.catalog-heading p{font-size:.9rem}main{padding-inline:12px}.hero-band{grid-template-columns:1fr;padding-top:28px}.hero-band h1{font-size:2.35rem;line-height:1.04}.book-grid,.catalog-content .book-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.book-card{grid-template-rows:210px 1fr auto}.card-actions,.two-columns,.stats-grid,.cart-row,.order-row,.checkout-form,.profile-readonly{grid-template-columns:1fr}.detail-drawer{left:12px;right:12px;bottom:12px;grid-template-columns:1fr;max-height:calc(100vh - 24px);overflow:auto}.detail-cover{min-height:220px}.book-detail-layout{grid-template-columns:1fr;gap:10px;height:min(560px,calc(100dvh - 44px));grid-template-rows:130px minmax(0,1fr)}.book-detail-modal .detail-cover{min-height:0;max-height:none}.book-detail-modal{width:min(390px,calc(100vw - 24px));max-height:calc(100dvh - 24px);padding:10px}.book-detail-modal h2{font-size:1rem;-webkit-line-clamp:1}.detail-summary{-webkit-line-clamp:6}}