:root{--bg-paper:#fdfbf7;--bg-paper-dark:#f4f1ea;--bg-main:#fdfbf7;--text-main:#1a1a1a;--text-muted:#5a5a5a;--accent:#c5a059;--accent-dark:#a68546;--border:#e2ddd3;--shadow:rgba(0,0,0,.08);--serif:"Georgia","Times New Roman",serif;--sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--transition:all 0.3s cubic-bezier(0.4,0,0.2,1)}*{box-sizing:border-box;margin:0;padding:0}body,html{max-width:100vw;overflow-x:hidden}body{background-color:var(--bg-paper);background-image:linear-gradient(hsla(0,0%,100%,.5) 1px,transparent 0),linear-gradient(90deg,hsla(0,0%,100%,.5) 1px,transparent 0);background-size:20px 20px;color:var(--text-main);font-family:var(--sans);line-height:1.6;min-height:100vh}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}.container{max-width:1200px;margin:0 auto;padding:0 2rem}@media (max-width:640px){.container{padding:0 1rem}}header{padding:1rem 0;border-bottom:1px solid var(--border);background:hsla(40,60%,98%,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:-webkit-sticky;position:sticky;top:0;z-index:100}nav{justify-content:space-between;flex-wrap:wrap;gap:1rem}.logo,nav{display:flex;align-items:center}.logo{font-family:var(--serif);font-size:1.4rem;font-weight:700;letter-spacing:-.5px;color:var(--text-main);text-decoration:none;gap:.75rem;flex-shrink:0}.logo img{height:36px;width:auto}.nav-links{display:flex;gap:1.75rem;align-items:center;flex-wrap:wrap}.nav-links a,.nav-links button.linklike{text-decoration:none;color:var(--text-muted);font-weight:500;font-size:.95rem;transition:var(--transition);background:transparent;border:none;cursor:pointer;font-family:inherit;padding:0}.nav-links a:hover,.nav-links button.linklike:hover{color:var(--text-main)}.hero{padding:6rem 0 5rem;text-align:center;background:radial-gradient(circle at center,#fffcf9 0,var(--bg-paper-dark) 100%);border-bottom:1px solid var(--border)}.hero-badge{display:inline-block;padding:.5rem 1rem;background:rgba(197,160,89,.1);color:var(--accent-dark);border-radius:100px;font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:2px;margin-bottom:2rem}.hero h1{font-size:clamp(2rem,5vw,4rem);line-height:1.1;margin-bottom:1.5rem;max-width:900px;margin-left:auto;margin-right:auto}.hero h1,.hero p{font-family:var(--serif)}.hero p{font-size:clamp(1rem,2vw,1.25rem);color:var(--text-muted);max-width:650px;margin:0 auto 2.5rem;font-style:italic}.hero-cta{justify-content:center}.hero-cta,.section-header{display:flex;gap:1rem;flex-wrap:wrap}.section-header{justify-content:space-between;align-items:flex-end;margin-bottom:3rem;padding-top:5rem}.section-title{font-family:var(--serif);font-size:clamp(1.75rem,3vw,2.5rem);color:var(--text-main)}.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));grid-gap:3rem 2rem;gap:3rem 2rem;padding-bottom:5rem}.book-card{cursor:pointer;transition:transform .3s ease;display:flex;flex-direction:column}.book-card:hover{transform:translateY(-8px)}.book-cover-wrap{padding:1rem;border-radius:8px;text-align:center;cursor:pointer;aspect-ratio:2/3;display:flex;align-items:center;justify-content:center;overflow:hidden}.book-cover-img{max-width:100%;max-height:100%;object-fit:cover;border-radius:4px;box-shadow:0 4px 10px rgba(0,0,0,.3)}.book-info{padding-top:1rem}.book-info h3{font-size:1.05rem;margin-bottom:.5rem;cursor:pointer;font-family:var(--serif);line-height:1.3}.book-info .book-author{color:var(--text-muted);font-size:.9rem;margin-bottom:.5rem}.book-info .book-price{font-weight:700;color:var(--accent)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.85rem 1.75rem;border-radius:6px;font-weight:600;text-decoration:none;cursor:pointer;transition:var(--transition);border:none;font-family:var(--sans);font-size:.95rem;gap:.5rem;white-space:nowrap}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 10px 20px rgba(197,160,89,.2)}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text-main)}.btn-outline:hover{background:var(--bg-paper-dark);border-color:var(--text-muted)}.btn-full{width:100%}.btn-sm{padding:.5rem 1rem;font-size:.85rem}.btn:disabled{opacity:.6;cursor:not-allowed}.modal-overlay{position:fixed;inset:0;background:rgba(26,26,26,.6);z-index:10000;display:flex;align-items:center;justify-content:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:1rem}.modal-content{background:var(--bg-paper);padding:2rem;border-radius:12px;width:100%;max-width:420px;box-shadow:0 30px 60px rgba(0,0,0,.3)}.modal-content h2{margin-bottom:1.5rem;font-family:var(--serif)}.form-group{margin-bottom:1rem}.form-group label{display:block;font-size:.85rem;font-weight:600;margin-bottom:.5rem;color:var(--text-muted)}.form-group input{width:100%;padding:.75rem;border:1px solid var(--border);border-radius:6px;font-size:1rem;background:#fff;font-family:inherit;transition:var(--transition)}.form-group input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(197,160,89,.15)}.form-row-checkbox{display:flex;gap:.5rem;align-items:flex-start;margin-top:1rem;font-size:.85rem;color:var(--text-muted)}.form-row-checkbox a{color:var(--accent);text-decoration:underline}.modal-switch{text-align:center;font-size:.9rem;margin-top:1rem}.modal-switch a,.modal-switch button{color:var(--accent);font-weight:700;background:none;border:none;cursor:pointer;font-family:inherit;font-size:inherit}footer{background:#1a1a1a;color:#f4f1ea;padding:5rem 0 3rem;margin-top:4rem}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;grid-gap:3rem;gap:3rem}.footer-brand h3{font-family:var(--serif);font-size:1.6rem;margin-bottom:1.25rem;color:#fff}.footer-brand p{color:#a0a0a0;max-width:320px;line-height:1.8;font-size:.95rem}.footer-links h4{font-size:.8rem;text-transform:uppercase;letter-spacing:2px;margin-bottom:1.5rem;color:var(--accent)}.footer-links ul{list-style:none}.footer-links li{margin-bottom:.85rem}.footer-links a{color:#a0a0a0;font-size:.95rem;transition:var(--transition)}.footer-links a:hover{color:#fff;padding-left:5px}.footer-bottom{margin-top:4rem;padding-top:2rem;border-top:1px solid #333;text-align:center;font-size:.85rem;color:#777}.policy-container{max-width:800px;margin:0 auto;padding:6rem 1rem 4rem}.policy-header{text-align:center;margin-bottom:3rem}.policy-header h1{font-family:var(--serif);font-size:clamp(2rem,4vw,2.8rem);margin-bottom:.5rem}.policy-header 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.8rem;font-size:.8rem;color:var(--text-muted)}.product-title{font-family:var(--serif);font-size:clamp(1.75rem,3.4vw,3rem);line-height:1.1;margin-bottom:.8rem}.product-author{color:var(--text-muted);margin-bottom:1rem}.product-price{font-size:2rem;font-weight:800;color:var(--accent-dark);margin:.75rem 0 1.4rem}.product-copy{max-width:65ch;color:var(--text-muted);line-height:1.75;margin-bottom:1.6rem}.product-actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-bottom:1.5rem}.product-list{margin-top:.4rem;color:var(--text-muted);line-height:1.7;padding-left:1.2rem}.product-list li{margin-bottom:.4rem}@media (max-width:860px){.product-wrap{grid-template-columns:1fr}.product-cover{max-width:360px;margin:0 auto}}.cart-page{min-height:100vh;padding:5rem 0 4rem}.cart-layout{display:grid;grid-template-columns:2fr 1fr;grid-gap:1.5rem;gap:1.5rem}.cart-card,.summary-card{background:var(--bg-paper-dark);border:1px solid 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img{width:100%;border-radius:12px;display:block}.category-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-gap:1.5rem;gap:1.5rem;margin-bottom:3rem}.category-card{background:#fff;padding:2rem;border:1px solid var(--border);border-radius:8px;transition:var(--transition);text-align:center;cursor:pointer}.category-card:hover{border-color:var(--accent);transform:translateY(-5px);box-shadow:0 10px 30px var(--shadow)}.category-card h3{font-family:var(--serif);margin-bottom:.5rem}.category-card p{color:var(--text-muted);font-size:.9rem}@media (max-width:768px){.about-grid{grid-template-columns:1fr;gap:2rem}}.library-empty{text-align:center;padding:4rem 2rem;background:var(--bg-paper-dark);border-radius:12px}.library-empty p{font-family:var(--serif);font-size:1.2rem;margin-bottom:2rem}@media (max-width:992px){.footer-grid{grid-template-columns:1fr 1fr;gap:2.5rem}}@media (max-width:768px){.nav-links{display:none}.nav-links.open{display:flex;flex-direction:column;align-items:stretch;width:100%;padding:1rem 0;gap:1rem}.nav-toggle{display:inline-flex;background:transparent;border:1px solid var(--border);border-radius:6px;padding:.4rem .7rem;cursor:pointer;font-size:1.2rem;color:var(--text-main)}.footer-grid{grid-template-columns:1fr;gap:2rem}.hero{padding:4rem 0}.section-header{padding-top:3rem;margin-bottom:2rem}.book-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:1.5rem}}@media (min-width:769px){.nav-toggle{display:none}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .5s ease-out}