:root{--bs-blue:#2b5adc;--bs-blue-dark:#163a9a;--bs-ink:#101828;--bs-muted:#667085;--bs-soft:#f4f7ff;--bs-border:#e4e9f2;--bs-green:#0b8f64}.buck-buckstore-page-body{background:#fff}.buckstore-page{overflow:hidden;background:linear-gradient(180deg,#fff 0,#fbfcff 100%)}.buckstore-page .buck-container{max-width:1480px}.buckstore-eyebrow{display:block;color:var(--bs-blue);font-size:13px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;margin-bottom:8px}.buckstore-hero{position:relative;background:#eef3ff}.buckstore-slider{position:relative;min-height:470px;overflow:hidden}.buckstore-slides{position:relative;min-height:470px}.buckstore-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .55s ease,visibility .55s ease;background:linear-gradient(135deg,#0f2f83,#2b5adc)}.buckstore-slide.is-active{opacity:1;visibility:visible;z-index:1}.buckstore-slide-bg{position:absolute;inset:0}.buckstore-slide-bg:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,26,72,.88) 0,rgba(8,26,72,.62) 42%,rgba(8,26,72,.12) 72%,rgba(8,26,72,0) 100%)}.buckstore-slide-bg img{width:100%;height:100%;object-fit:cover;display:block}.buckstore-slide-content{position:relative;z-index:2;min-height:470px;display:flex;align-items:center}.buckstore-slide-copy{max-width:650px;color:#fff;padding:55px 0}.buckstore-slide-copy .buckstore-eyebrow{color:#dce6ff}.buckstore-slide-copy h1,.buckstore-fallback-grid h1{font-size:clamp(42px,5vw,72px);line-height:1.02;letter-spacing:-.045em;margin:0 0 18px;font-weight:700}.buckstore-slide-copy p,.buckstore-fallback-grid p{font-size:20px;line-height:1.65;margin:0 0 28px;color:#eaf0ff}.buckstore-hero-cta,.buckstore-mini-cta{display:inline-flex;align-items:center;gap:12px;background:#fff;color:var(--bs-blue);text-decoration:none;border-radius:12px;padding:14px 20px;font-weight:700;box-shadow:0 12px 30px rgba(10,36,94,.15);transition:.2s ease}.buckstore-hero-cta:hover,.buckstore-mini-cta:hover{transform:translateY(-2px);color:var(--bs-blue-dark)}.buckstore-slider-arrow{position:absolute;z-index:3;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.45);background:rgba(7,24,61,.32);color:#fff;font-size:30px;line-height:1;display:grid;place-items:center;cursor:pointer}.buckstore-slider-arrow.prev{left:20px}.buckstore-slider-arrow.next{right:20px}.buckstore-slider-dots{position:absolute;z-index:4;bottom:22px;left:50%;transform:translateX(-50%);display:flex;gap:8px}.buckstore-slider-dots button{width:9px;height:9px;border:0;border-radius:99px;background:rgba(255,255,255,.55);padding:0;transition:.2s}.buckstore-slider-dots button.is-active{width:30px;background:#fff}.buckstore-fallback-hero{background:radial-gradient(circle at 80% 20%,#537cf0 0,#2b5adc 28%,#163a9a 68%,#102a72 100%);color:#fff}.buckstore-fallback-grid{min-height:470px;display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:60px;padding-top:45px;padding-bottom:45px}.buckstore-fallback-grid .buckstore-eyebrow{color:#cbd9ff}.buckstore-hero-books{height:340px;position:relative;perspective:1000px}.book-shape{position:absolute;display:flex;align-items:flex-end;padding:22px 15px;width:175px;height:270px;border-radius:7px 13px 13px 7px;font-weight:800;letter-spacing:.16em;box-shadow:-16px 20px 45px rgba(8,25,67,.28);border-left:8px solid rgba(255,255,255,.18)}.book-shape.one{right:250px;top:35px;background:#f4f7ff;color:#1c3e99;transform:rotateY(-12deg) rotateZ(-7deg)}.book-shape.two{right:120px;top:10px;background:#101828;color:#fff;transform:rotateY(-8deg) rotateZ(2deg);z-index:2}.book-shape.three{right:5px;top:48px;background:#f6c844;color:#162248;transform:rotateY(-4deg) rotateZ(8deg)}.buckstore-search-section{padding:46px 0 34px;background:#fff}.buckstore-search-section.is-catalog{padding-top:54px}.buckstore-search-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:18px}.buckstore-search-head h2,.buckstore-section-title h2{font-size:clamp(30px,3.4vw,48px);line-height:1.08;letter-spacing:-.035em;margin:0;color:var(--bs-ink)}.buckstore-back-store{color:var(--bs-blue);font-weight:700;text-decoration:none;white-space:nowrap}.buckstore-search-form{position:relative;display:grid;grid-template-columns:auto 1fr auto;align-items:center;max-width:940px;margin:0 auto;background:#fff;border:2px solid #dce3f1;border-radius:18px;padding:7px;box-shadow:0 14px 42px rgba(16,24,40,.08);transition:.2s}.buckstore-search-form:focus-within{border-color:var(--bs-blue);box-shadow:0 15px 45px rgba(43,90,220,.13)}.buckstore-search-form .search-icon{font-size:28px;color:var(--bs-blue);padding:0 10px 0 13px;transform:rotate(-15deg)}.buckstore-search-form input{border:0!important;outline:0!important;box-shadow:none!important;background:transparent!important;height:54px;font:inherit;font-size:17px;color:var(--bs-ink);min-width:0}.buckstore-search-form button{height:50px;border:0;border-radius:12px;padding:0 27px;background:var(--bs-blue);color:#fff;font-weight:700;font-size:15px;cursor:pointer}.buckstore-live-results{position:absolute;left:0;right:0;top:72px;background:#fff;border:1px solid var(--bs-border);border-radius:16px;box-shadow:0 25px 60px rgba(16,24,40,.18);z-index:40;display:none;max-height:430px;overflow:auto}.buckstore-live-results.is-open{display:block}.buckstore-live-item{display:grid;grid-template-columns:52px 1fr auto;gap:13px;align-items:center;padding:11px 13px;border-bottom:1px solid #eef1f6;text-decoration:none;color:var(--bs-ink)}.buckstore-live-item:last-child{border-bottom:0}.buckstore-live-item:hover{background:#f8faff}.buckstore-live-item img,.buckstore-live-cover{width:52px;height:72px;object-fit:contain;background:#f5f7fb;border-radius:6px}.buckstore-live-item strong,.buckstore-live-item small{display:block}.buckstore-live-item small{color:var(--bs-muted);margin-top:3px}.buckstore-live-item b{color:var(--bs-blue);font-size:14px}.buckstore-live-empty{padding:18px;text-align:center;color:var(--bs-muted)}.buckstore-shelf,.buckstore-categories,.buckstore-catalog{padding-top:54px;padding-bottom:26px}.buckstore-section-title{display:flex;justify-content:space-between;gap:25px;align-items:flex-end;margin-bottom:25px}.buckstore-section-title p{margin:9px 0 0;color:var(--bs-muted);font-size:16px;line-height:1.6}.buckstore-section-title>strong{color:var(--bs-muted);white-space:nowrap}.buckstore-scroll-row{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(190px,220px);gap:22px;overflow-x:auto;padding:4px 3px 20px;scroll-snap-type:x proximity;scrollbar-width:thin;scrollbar-color:#cfd7e6 transparent}.buckstore-scroll-row::-webkit-scrollbar{height:6px}.buckstore-scroll-row::-webkit-scrollbar-thumb{background:#cfd7e6;border-radius:30px}.buckstore-book-card{scroll-snap-align:start;min-width:0}.buckstore-cover-wrap{position:relative;aspect-ratio:2/3;border-radius:14px;background:linear-gradient(145deg,#f7f9fc,#edf2fb);border:1px solid #e6eaf1;padding:12px;display:flex;align-items:center;justify-content:center;overflow:hidden;box-shadow:0 10px 28px rgba(16,24,40,.07);transition:transform .22s ease,box-shadow .22s ease}.buckstore-cover-wrap img{display:block;width:100%;height:100%;object-fit:contain;transition:transform .25s ease}.buckstore-cover-placeholder{width:100%;height:100%;background:linear-gradient(145deg,#173b9d,#2b5adc);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:8px;font-weight:800;letter-spacing:.15em}.buckstore-cover-placeholder small{font-size:11px;opacity:.7;margin-top:5px}.buckstore-view-chip{position:absolute;left:50%;bottom:14px;transform:translate(-50%,12px);opacity:0;background:#fff;color:var(--bs-blue);border-radius:99px;padding:8px 12px;font-size:12px;font-weight:800;box-shadow:0 8px 22px rgba(15,23,42,.2);transition:.22s;white-space:nowrap}.buckstore-book-card:hover .buckstore-cover-wrap{transform:translateY(-5px);box-shadow:0 18px 38px rgba(16,24,40,.12)}.buckstore-book-card:hover .buckstore-cover-wrap img{transform:scale(1.025)}.buckstore-book-card:hover .buckstore-view-chip{opacity:1;transform:translate(-50%,0)}.buckstore-card-copy{padding:13px 4px 2px}.buckstore-card-copy h3{margin:0;color:var(--bs-ink);font-size:16px;line-height:1.35;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.buckstore-card-copy p{margin:5px 0 8px;color:var(--bs-muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.buckstore-card-copy strong{color:var(--bs-blue);font-size:15px}.buckstore-categories{background:#fff}.buckstore-category-row{display:grid;grid-auto-flow:column;grid-auto-columns:150px;gap:18px;overflow-x:auto;padding:4px 2px 17px;scrollbar-width:thin;scrollbar-color:#d7ddea transparent}.buckstore-category-card{text-decoration:none;text-align:center;color:var(--bs-ink);display:flex;flex-direction:column;align-items:center;gap:11px}.buckstore-category-art{width:112px;height:112px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(145deg,#fff,#edf3ff);border:1px solid #dce5f5;box-shadow:0 10px 25px rgba(43,90,220,.08);overflow:hidden;transition:.2s}.buckstore-category-art img{width:100%;height:100%;object-fit:cover}.buckstore-category-art>span{font-size:34px;font-weight:800;color:var(--bs-blue)}.buckstore-category-card strong{font-size:14px;line-height:1.35}.buckstore-category-card:hover .buckstore-category-art{transform:translateY(-4px);border-color:#bfcdf5}.buckstore-promo-ad{padding-top:35px;padding-bottom:25px}.buckstore-promo-ad-inner{position:relative;min-height:190px;border-radius:24px;overflow:hidden;background:linear-gradient(120deg,#102a72,#2b5adc);color:#fff;display:flex;align-items:center;box-shadow:0 18px 45px rgba(20,45,110,.14)}.buckstore-promo-art{position:absolute;inset:0}.buckstore-promo-art:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,31,85,.88),rgba(22,58,154,.66) 55%,rgba(43,90,220,.1))}.buckstore-promo-art img{width:100%;height:100%;object-fit:cover}.buckstore-promo-copy{position:relative;z-index:1;max-width:660px;padding:32px 38px}.buckstore-promo-copy h2{font-size:32px;line-height:1.1;margin:0 0 9px;color:#fff}.buckstore-promo-copy p{margin:0 0 18px;color:#e7edff;line-height:1.55}.buckstore-mini-cta{padding:10px 15px;font-size:13px}.buckstore-catalog-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:28px 22px}.buckstore-empty-state{padding:65px 20px;text-align:center;background:#f8faff;border:1px dashed #cad5ed;border-radius:20px}.buckstore-empty-state span{font-size:46px}.buckstore-empty-state h3{font-size:25px;margin:12px 0 7px}.buckstore-empty-state p{color:var(--bs-muted)}.buckstore-empty-state a{display:inline-block;margin-top:8px;color:var(--bs-blue);font-weight:700;text-decoration:none}.buckstore-disabled{padding:90px 20px;text-align:center}.buckstore-disabled>div{max-width:700px;margin:auto;padding:55px;background:#f5f7fb;border-radius:24px}.buckstore-disabled span{color:var(--bs-blue);font-weight:800;letter-spacing:.14em}.buckstore-disabled h1{font-size:42px;margin:13px 0}.buckstore-all-books{padding-bottom:70px}
@media(max-width:1200px){.buckstore-catalog-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.buckstore-scroll-row{grid-auto-columns:minmax(180px,205px)}}
@media(max-width:980px){.buckstore-fallback-grid{grid-template-columns:1fr}.buckstore-hero-books{display:none}.buckstore-slider,.buckstore-slides,.buckstore-slide-content,.buckstore-fallback-grid{min-height:420px}.buckstore-catalog-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.buckstore-slide-bg:after{background:linear-gradient(90deg,rgba(8,26,72,.86),rgba(8,26,72,.45))}}
@media(max-width:760px){.buckstore-slider,.buckstore-slides,.buckstore-slide-content,.buckstore-fallback-grid{min-height:390px}.buckstore-slide-copy{padding:42px 0}.buckstore-slide-copy h1,.buckstore-fallback-grid h1{font-size:42px}.buckstore-slide-copy p,.buckstore-fallback-grid p{font-size:16px;line-height:1.55}.buckstore-slider-arrow{width:38px;height:38px}.buckstore-slider-arrow.prev{left:9px}.buckstore-slider-arrow.next{right:9px}.buckstore-search-section{padding:32px 0 24px}.buckstore-search-head{align-items:flex-start;flex-direction:column}.buckstore-search-head h2,.buckstore-section-title h2{font-size:31px}.buckstore-search-form{grid-template-columns:auto 1fr;border-radius:15px;padding:6px}.buckstore-search-form button{grid-column:1/-1;width:100%;height:46px;margin-top:3px}.buckstore-live-results{top:126px}.buckstore-live-item{grid-template-columns:44px 1fr auto}.buckstore-live-item img,.buckstore-live-cover{width:44px;height:62px}.buckstore-shelf,.buckstore-categories,.buckstore-catalog{padding-top:38px}.buckstore-section-title{align-items:flex-start;flex-direction:column}.buckstore-scroll-row{grid-auto-columns:43vw;gap:15px;margin-right:-18px;padding-right:18px}.buckstore-category-row{grid-auto-columns:118px;gap:12px;margin-right:-18px;padding-right:18px}.buckstore-category-art{width:88px;height:88px}.buckstore-promo-ad{padding-top:25px}.buckstore-promo-ad-inner{min-height:220px;border-radius:18px}.buckstore-promo-copy{padding:25px}.buckstore-promo-copy h2{font-size:27px}.buckstore-catalog-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:23px 14px}.buckstore-cover-wrap{padding:9px;border-radius:11px}.buckstore-card-copy{padding-top:10px}.buckstore-card-copy h3{font-size:14px}.buckstore-card-copy p{font-size:12px}.buckstore-view-chip{display:none}}
@media(max-width:420px){.buckstore-scroll-row{grid-auto-columns:48vw}.buckstore-catalog-grid{gap:20px 11px}.buckstore-slide-copy h1,.buckstore-fallback-grid h1{font-size:37px}}

/* Phase 3: individual book experience */
.buckstore-book-link{display:block;color:inherit;text-decoration:none}.buckstore-product-page{background:linear-gradient(180deg,#f7f9ff 0,#fff 520px);padding:34px 0 78px}.buckstore-breadcrumbs{display:flex;align-items:center;gap:9px;flex-wrap:wrap;color:#7c879e;font-size:13px;margin:2px 0 26px}.buckstore-breadcrumbs a{color:var(--bs-blue);text-decoration:none;font-weight:600}.buckstore-product-hero{display:grid;grid-template-columns:minmax(260px,360px) minmax(0,1fr) minmax(300px,360px);gap:44px;align-items:start}.buckstore-product-gallery{min-width:0}.buckstore-product-main-image{aspect-ratio:2/3;background:#fff;border:1px solid var(--bs-border);border-radius:22px;padding:18px;display:flex;align-items:center;justify-content:center;box-shadow:0 20px 50px rgba(16,24,40,.09)}.buckstore-product-main-image>img{width:100%;height:100%;object-fit:contain;border-radius:10px}.buckstore-product-thumbs{display:flex;gap:10px;margin-top:14px;overflow-x:auto;padding:2px}.buckstore-product-thumb{width:58px;height:76px;border:2px solid transparent;border-radius:10px;background:#fff;padding:4px;cursor:pointer}.buckstore-product-thumb.is-active{border-color:var(--bs-blue)}.buckstore-product-thumb img{width:100%;height:100%;object-fit:contain}.buckstore-product-info{padding-top:12px}.buckstore-product-cats{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:17px}.buckstore-product-cats a{display:inline-flex;padding:7px 11px;border-radius:999px;background:#eaf0ff;color:var(--bs-blue);font-size:12px;font-weight:700;text-decoration:none}.buckstore-product-info h1{font-size:clamp(38px,4.5vw,64px);line-height:1.02;letter-spacing:-.045em;margin:0;color:var(--bs-ink)}.buckstore-product-subtitle{font-size:20px;line-height:1.45;color:#68748b;margin:16px 0 0}.buckstore-product-author{font-size:16px;color:#6d7890;margin:18px 0}.buckstore-product-author strong{color:var(--bs-ink)}.buckstore-product-summary{font-size:16px;line-height:1.75;color:#4f5d74;margin-top:26px;max-width:760px}.buckstore-product-summary p{margin:0}.buckstore-product-trust{display:flex;gap:9px;flex-wrap:wrap;margin-top:25px}.buckstore-product-trust span{padding:8px 11px;background:#f3f6fb;border-radius:10px;font-size:12px;font-weight:650;color:#43516a}.buckstore-buy-card{position:sticky;top:118px;background:#fff;border:1px solid #dfe5f0;border-radius:22px;padding:24px;box-shadow:0 24px 60px rgba(16,24,40,.11)}.buckstore-format-options{display:grid;gap:10px;margin:15px 0 18px}.buckstore-format-option{appearance:none;border:1.5px solid #dce3ef;border-radius:14px;background:#fff;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 16px;cursor:pointer;text-align:left;color:var(--bs-ink);font:inherit;transition:.18s}.buckstore-format-option:hover{border-color:#afc0ef}.buckstore-format-option.is-active{border-color:var(--bs-blue);background:#f1f5ff;box-shadow:0 0 0 3px rgba(43,90,220,.08)}.buckstore-format-option span{font-weight:650;text-transform:capitalize}.buckstore-format-option strong{color:var(--bs-blue);font-size:17px}.buckstore-selected-price{border-top:1px solid #edf0f5;border-bottom:1px solid #edf0f5;padding:17px 0;display:flex;align-items:center;justify-content:space-between;gap:16px}.buckstore-selected-price>span{font-weight:700;color:#59667d}.buckstore-selected-price>div{display:flex;align-items:baseline;gap:8px}.buckstore-selected-price strong{font-size:28px;color:var(--bs-ink)}.buckstore-selected-price del{font-size:13px;color:#98a1b2}.buckstore-stock-state{display:flex;align-items:center;gap:8px;font-weight:700;font-size:13px;margin:15px 0}.buckstore-stock-state span{width:9px;height:9px;border-radius:50%;background:#18b874;box-shadow:0 0 0 4px rgba(24,184,116,.12)}.buckstore-stock-state.is-low{color:#9a6400}.buckstore-stock-state.is-low span{background:#e8a10a;box-shadow:0 0 0 4px rgba(232,161,10,.12)}.buckstore-stock-state.is-out{color:#d03c45}.buckstore-stock-state.is-out span{background:#d03c45;box-shadow:0 0 0 4px rgba(208,60,69,.12)}.buckstore-variant-meta{margin:0;border-top:1px solid #edf0f5}.buckstore-variant-meta div{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid #edf0f5;font-size:12px}.buckstore-variant-meta dt{color:#8a95a8}.buckstore-variant-meta dd{margin:0;color:#3f4a5e;font-weight:600;text-align:right}.buckstore-phase3-note,.buckstore-no-format{margin-top:17px;background:#f6f8fc;border-radius:13px;padding:14px}.buckstore-phase3-note strong,.buckstore-no-format strong{font-size:13px;color:var(--bs-ink)}.buckstore-phase3-note p,.buckstore-no-format p{font-size:11px;line-height:1.5;color:#7e899d;margin:5px 0 0}.buckstore-product-content-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);gap:28px;margin-top:66px}.buckstore-about-book,.buckstore-book-specs{background:#fff;border:1px solid var(--bs-border);border-radius:22px;padding:32px}.buckstore-about-book h2,.buckstore-book-specs h2,.buckstore-author-card h2{font-size:30px;letter-spacing:-.025em;margin:6px 0 18px;color:var(--bs-ink)}.buckstore-rich-copy{color:#4c596f;line-height:1.85;font-size:15px}.buckstore-rich-copy p:first-child{margin-top:0}.buckstore-book-specs dl{margin:0}.buckstore-book-specs dl div{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-bottom:1px solid #eef1f6}.buckstore-book-specs dl div:last-child{border-bottom:0}.buckstore-book-specs dt{color:#8993a5;font-size:13px}.buckstore-book-specs dd{margin:0;color:#273248;font-size:13px;font-weight:650;text-align:right}.buckstore-author-section{padding-top:34px}.buckstore-author-card{background:linear-gradient(135deg,#0f2d7d,#2b5adc);border-radius:26px;padding:34px;color:#fff;display:grid;grid-template-columns:130px 1fr;gap:27px;align-items:center;overflow:hidden;position:relative}.buckstore-author-card:after{content:"";position:absolute;width:280px;height:280px;border:45px solid rgba(255,255,255,.07);border-radius:50%;right:-90px;top:-110px}.buckstore-author-photo{width:130px;height:130px;border-radius:50%;background:#fff;display:grid;place-items:center;overflow:hidden;position:relative;z-index:1}.buckstore-author-photo img{width:100%;height:100%;object-fit:cover}.buckstore-author-photo span{font-size:46px;font-weight:800;color:var(--bs-blue)}.buckstore-author-card>div:last-child{position:relative;z-index:1}.buckstore-author-card .buckstore-eyebrow{color:#cad7ff}.buckstore-author-card h2{color:#fff;margin-bottom:10px}.buckstore-author-bio,.buckstore-author-card p{color:#eaf0ff;line-height:1.75;font-size:14px;margin:0}.buckstore-author-bio p{margin:0}.buckstore-product-shelf{padding-top:55px}.buckstore-product-notfound{padding:100px 20px;text-align:center}.buckstore-product-notfound h1{font-size:48px;margin:12px 0}.buckstore-product-notfound p{color:var(--bs-muted);margin-bottom:24px}.buckstore-primary-button{display:inline-flex;padding:13px 20px;border-radius:12px;background:var(--bs-blue);color:#fff;text-decoration:none;font-weight:700}
@media(max-width:1120px){.buckstore-product-hero{grid-template-columns:minmax(235px,310px) minmax(0,1fr)}.buckstore-buy-card{grid-column:2;position:relative;top:auto}.buckstore-product-info{grid-row:1 / span 2}.buckstore-product-content-grid{grid-template-columns:1fr}}
@media(max-width:760px){.buckstore-product-page{padding-top:20px}.buckstore-product-hero{grid-template-columns:1fr;gap:24px}.buckstore-product-gallery{max-width:330px;width:100%;margin:0 auto}.buckstore-product-info{grid-row:auto}.buckstore-buy-card{grid-column:auto;position:static}.buckstore-product-info h1{font-size:40px}.buckstore-product-subtitle{font-size:17px}.buckstore-product-content-grid{margin-top:38px;gap:18px}.buckstore-about-book,.buckstore-book-specs{padding:23px;border-radius:18px}.buckstore-author-card{grid-template-columns:82px 1fr;padding:24px 20px;gap:17px}.buckstore-author-photo{width:82px;height:82px}.buckstore-author-card h2{font-size:24px}.buckstore-product-shelf{padding-top:40px}.buckstore-breadcrumbs{font-size:11px;margin-bottom:18px}}
@media(max-width:480px){.buckstore-author-card{grid-template-columns:1fr}.buckstore-product-trust{display:grid}.buckstore-selected-price strong{font-size:24px}}

/* Phase 3 typography refinement: long-form product copy */
.buckstore-product-summary,.buckstore-product-summary p,.buckstore-rich-copy,.buckstore-rich-copy p,.buckstore-author-bio,.buckstore-author-bio p{ text-align:justify; text-justify:inter-word; }

/* Phase 4: commerce, cart, customer accounts, checkout */
.bs4-storebar{background:#fff;border-bottom:1px solid #edf1f7}.bs4-storebar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:13px;padding-bottom:13px}.bs4-storebrand{display:flex;flex-direction:column;text-decoration:none;color:var(--bs-ink)}.bs4-storebrand span{font-weight:900;letter-spacing:.12em;color:var(--bs-blue);font-size:13px}.bs4-storebrand small{font-size:11px;color:#8993a5;margin-top:2px}.bs4-store-actions{display:flex;align-items:center;gap:10px}.bs4-store-actions a{display:inline-flex;align-items:center;gap:7px;text-decoration:none;color:#334155;border:1px solid #e0e6ef;border-radius:999px;padding:9px 13px;font-size:12px;font-weight:700;background:#fff}.bs4-store-actions a:hover{border-color:#b9c9f6;color:var(--bs-blue)}.bs4-cart-link b{min-width:20px;height:20px;border-radius:999px;display:inline-grid;place-items:center;background:#eef2f7;color:#64748b;font-size:10px}.bs4-cart-link b.has-items{background:var(--bs-blue);color:#fff}.bs4-page{background:linear-gradient(180deg,#f7f9ff 0,#fff 520px);padding:46px 0 80px;min-height:62vh}.bs4-pagehead{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:30px}.bs4-pagehead h1{margin:3px 0 6px;font-size:clamp(38px,5vw,62px);letter-spacing:-.045em;line-height:1.02;color:var(--bs-ink)}.bs4-pagehead p{margin:0;color:#667085;font-size:15px}.bs4-pagehead>a,.bs4-logout{color:var(--bs-blue);font-weight:750;text-decoration:none;background:#fff;border:1px solid #dfe5ef;border-radius:999px;padding:10px 15px;cursor:pointer}.bs4-panel,.bs4-summary{background:#fff;border:1px solid #e1e7f0;border-radius:22px;box-shadow:0 18px 45px rgba(16,24,40,.06)}.bs4-panel{padding:26px}.bs4-cart-layout{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(300px,.5fr);gap:26px;align-items:start}.bs4-summary{padding:25px;position:sticky;top:118px}.bs4-cart-row{display:grid;grid-template-columns:76px minmax(0,1fr) 126px 100px 34px;gap:16px;align-items:center;padding:17px 0;border-bottom:1px solid #edf1f5}.bs4-cart-row:first-child{padding-top:0}.bs4-cart-row:last-child{border-bottom:0;padding-bottom:0}.bs4-cart-cover{width:72px;height:98px;border-radius:9px;background:#f6f8fb;display:grid;place-items:center;overflow:hidden;border:1px solid #e7ebf1}.bs4-cart-cover img{width:100%;height:100%;object-fit:contain}.bs4-cart-copy strong,.bs4-cart-copy small,.bs4-cart-copy em{display:block}.bs4-cart-copy strong{font-size:15px;color:var(--bs-ink)}.bs4-cart-copy small{font-size:12px;color:#7b879a;margin-top:3px}.bs4-cart-copy em{font-style:normal;font-size:11px;color:var(--bs-blue);font-weight:750;margin-top:8px}.bs4-cart-qty,.bs4-qty{display:grid;grid-template-columns:32px 48px 32px;align-items:center;border:1px solid #dfe5ed;border-radius:10px;overflow:hidden;background:#fff}.bs4-cart-qty button,.bs4-qty button{border:0;background:#f7f9fc;height:36px;cursor:pointer;font-size:18px;color:#40506b}.bs4-cart-qty input,.bs4-qty input{width:100%;height:36px;border:0!important;box-shadow:none!important;text-align:center;padding:0!important;font-weight:700;color:#1f2937;-moz-appearance:textfield}.bs4-cart-qty input::-webkit-outer-spin-button,.bs4-cart-qty input::-webkit-inner-spin-button,.bs4-qty input::-webkit-outer-spin-button,.bs4-qty input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.bs4-cart-row>b{text-align:right;color:var(--bs-ink)}.bs4-remove{border:0;background:#fff;color:#b8c0ce;font-size:24px;cursor:pointer}.bs4-remove:hover{color:#d03c45}.bs4-summary-head h2{font-size:24px;margin:2px 0 18px}.bs4-summary-line,.bs4-summary-total{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:11px 0;color:#69758a;font-size:13px}.bs4-summary-line strong{color:#354158;font-size:12px}.bs4-summary-total{border-top:1px solid #edf1f5;margin-top:8px;padding-top:17px;color:var(--bs-ink);font-weight:700}.bs4-summary-total strong{font-size:23px}.bs4-primary,.bs4-secondary{appearance:none;text-decoration:none;border:0;border-radius:12px;padding:13px 18px;font:inherit;font-weight:800;cursor:pointer;display:inline-flex;justify-content:center;align-items:center}.bs4-primary{background:var(--bs-blue);color:#fff}.bs4-primary:hover{background:#214dc6;color:#fff}.bs4-primary:disabled{opacity:.5;cursor:not-allowed}.bs4-secondary{background:#eef3ff;color:var(--bs-blue)}.bs4-summary>.bs4-primary{display:flex;width:100%;margin-top:18px}.bs4-text-link{display:block;text-align:center;color:#667085;text-decoration:none;font-size:12px;font-weight:650;margin-top:12px}.bs4-empty{text-align:center;padding:45px 20px}.bs4-empty span{font-size:38px}.bs4-empty h2,.bs4-empty h3{margin:10px 0 5px;color:var(--bs-ink)}.bs4-empty p{color:#7a8597;margin:0 0 18px}.bs4-empty.compact{padding:20px 8px}.bs4-empty.standalone{padding:80px 20px}.bs4-empty.standalone h1{font-size:46px;margin:12px 0}.bs4-buy-actions{margin-top:18px;display:grid;grid-template-columns:112px 1fr;gap:10px}.bs4-add-cart,.bs4-buy-now{border-radius:12px;height:44px;font:inherit;font-weight:800;cursor:pointer}.bs4-add-cart{border:1.5px solid var(--bs-blue);background:#fff;color:var(--bs-blue)}.bs4-buy-now{grid-column:1/-1;border:0;background:var(--bs-blue);color:#fff}.bs4-add-cart:disabled,.bs4-buy-now:disabled{opacity:.42;cursor:not-allowed}.bs4-buy-message{grid-column:1/-1;min-height:18px;font-size:11px;font-weight:700;color:var(--bs-green)}.bs4-secure-note{display:flex;gap:10px;align-items:flex-start;background:#f5f8ff;border-radius:12px;padding:12px;margin-top:13px}.bs4-secure-note>span{color:var(--bs-green);font-weight:900}.bs4-secure-note p{margin:0}.bs4-secure-note strong,.bs4-secure-note small{display:block}.bs4-secure-note strong{font-size:12px;color:#344054}.bs4-secure-note small{font-size:10px;color:#8791a4;margin-top:3px}.bs4-grid-two,.bs4-grid-three{display:grid;gap:14px}.bs4-grid-two{grid-template-columns:1fr 1fr}.bs4-grid-three{grid-template-columns:1fr 1fr 1fr}.bs4-auth-shell{max-width:760px;margin:0 auto;background:#fff;border:1px solid #e0e6f0;border-radius:22px;padding:9px;box-shadow:0 18px 50px rgba(16,24,40,.07)}.bs4-auth-shell.is-compact{max-width:none;margin:0}.bs4-auth-tabs{display:grid;grid-template-columns:1fr 1fr;background:#f4f6fa;border-radius:14px;padding:4px}.bs4-auth-tabs button{border:0;background:transparent;padding:11px;border-radius:10px;color:#68758a;font-weight:750;cursor:pointer}.bs4-auth-tabs button.is-active{background:#fff;color:var(--bs-blue);box-shadow:0 4px 14px rgba(16,24,40,.06)}.bs4-auth-form{display:none;padding:26px}.bs4-auth-form.is-active{display:block}.bs4-auth-form h2{margin:0 0 4px;font-size:28px;color:var(--bs-ink)}.bs4-auth-form>p{margin:0 0 21px;color:#748096}.bs4-auth-form label,.bs4-checkout-fields label,.bs4-profile-form label{display:flex;flex-direction:column;gap:6px;font-size:12px;font-weight:750;color:#435069;margin-bottom:13px}.bs4-auth-form label small,.bs4-checkout-fields label small{font-weight:500;color:#939cac}.bs4-auth-form input,.bs4-checkout-fields input,.bs4-profile-form input,.bs4-checkout-fields textarea{width:100%;border:1px solid #d7deea;border-radius:10px;min-height:45px;padding:10px 12px;font:inherit;box-sizing:border-box;background:#fff}.bs4-auth-form .bs4-primary{width:100%;margin-top:5px}.bs4-form-message{min-height:18px;margin-top:9px;font-size:11px;font-weight:700}.bs4-form-message.is-error{color:#c93d48}.bs4-form-message.is-success{color:#11865e}.bs4-checkout-gate{display:grid;grid-template-columns:.75fr 1.25fr;gap:30px;align-items:start}.bs4-gate-copy{padding:32px}.bs4-gate-copy h2{font-size:38px;line-height:1.1;margin:7px 0 15px}.bs4-gate-copy p{color:#68758a;line-height:1.7}.bs4-checkout-layout{display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:26px;align-items:start}.bs4-checkout-fields h2{font-size:30px;margin:4px 0 24px}.bs4-checkout-fields label>span{font-weight:500;color:#9aa3b2}.bs4-checkout-summary{position:sticky;top:118px}.bs4-checkout-item{display:grid;grid-template-columns:48px 1fr auto;gap:10px;align-items:center;padding:10px 0;border-bottom:1px solid #edf1f5}.bs4-checkout-item>span{width:44px;height:60px;background:#f5f7fb;display:grid;place-items:center;border-radius:6px;overflow:hidden}.bs4-checkout-item img{width:100%;height:100%;object-fit:contain}.bs4-checkout-item p{margin:0}.bs4-checkout-item strong,.bs4-checkout-item small{display:block}.bs4-checkout-item strong{font-size:12px;color:#263249}.bs4-checkout-item small{font-size:10px;color:#8490a3;margin-top:3px}.bs4-checkout-item>b{font-size:11px}.bs4-checkout-summary .bs4-summary-head{display:none}.bs4-checkout-summary .bs4-summary-total strong{font-size:19px}.bs4-phase-payment{margin-top:17px;padding:13px;border-radius:12px;background:#fff8df;border:1px solid #f1df9f}.bs4-phase-payment strong{font-size:12px;color:#725000}.bs4-phase-payment p{font-size:10px;line-height:1.5;color:#886c20;margin:4px 0 0}.bs4-phase-payment.wide{max-width:720px;margin:22px auto 0}.bs4-place-order{width:100%;margin-top:14px}.bs4-account-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(320px,.55fr);gap:25px;align-items:start}.bs4-account-title{display:flex;justify-content:space-between;align-items:end;gap:20px}.bs4-account-title h2{margin:2px 0 0;font-size:28px}.bs4-account-title a{color:var(--bs-blue);font-size:12px;font-weight:750;text-decoration:none}.bs4-order-list{margin-top:18px}.bs4-order-row{display:grid;grid-template-columns:1fr auto 100px 58px;gap:13px;align-items:center;padding:15px 0;border-bottom:1px solid #edf1f5;text-decoration:none;color:#344054}.bs4-order-row:last-child{border-bottom:0}.bs4-order-row strong,.bs4-order-row small{display:block}.bs4-order-row strong{font-size:13px}.bs4-order-row small{font-size:10px;color:#929bab;margin-top:3px}.bs4-order-row>b{text-align:right}.bs4-order-row em{font-style:normal;color:var(--bs-blue);font-size:11px;font-weight:700}.bs4-status{display:inline-flex;padding:6px 9px;border-radius:999px;background:#eef2f7;color:#556175;font-size:10px;font-weight:800;white-space:nowrap}.bs4-status.status-processing,.bs4-status.status-packed{background:#e9f0ff;color:#214dc6}.bs4-status.status-shipped{background:#e8f7fb;color:#08708a}.bs4-status.status-delivered{background:#e8f8ef;color:#087443}.bs4-status.status-cancelled{background:#fff0f1;color:#b9323d}.bs4-profile-form{margin-top:16px}.bs4-profile-form .bs4-secondary{width:100%}.bs4-order-confirm{text-align:center;background:#fff;border:1px solid #e1e7f0;border-radius:26px;padding:42px;box-shadow:0 18px 50px rgba(16,24,40,.06)}.bs4-confirm-icon{width:62px;height:62px;border-radius:50%;display:grid;place-items:center;background:#e8f8ef;color:#0c8b61;font-size:30px;font-weight:900;margin:0 auto 16px}.bs4-order-confirm h1{font-size:45px;margin:5px 0 8px;color:var(--bs-ink)}.bs4-order-confirm>p{color:#69758a}.bs4-status-card{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-width:720px;margin:25px auto 0}.bs4-status-card>div{background:#f7f9fc;border-radius:12px;padding:14px}.bs4-status-card small,.bs4-status-card strong{display:block}.bs4-status-card small{font-size:10px;color:#929cab;text-transform:uppercase;letter-spacing:.08em}.bs4-status-card strong{font-size:14px;margin-top:4px;color:#2c374c}.bs4-thankyou-message{max-width:720px;margin:22px auto 18px;padding:15px 20px;border-radius:14px;background:#f5f8ff;color:#53627a;line-height:1.55}.bs4-thankyou-message strong{display:block;color:var(--bs-ink);font-size:14px;margin-bottom:3px}.bs4-thankyou-message span{display:block;font-size:13px}.bs4-order-confirm>.bs4-secondary,.bs4-order-confirm>p>.bs4-secondary{margin-top:4px}.bs4-order-detail-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:25px;margin-top:25px}.bs4-order-detail-grid h2{margin:0 0 16px}.bs4-confirm-items>div{display:grid;grid-template-columns:52px 1fr auto;gap:12px;align-items:center;padding:11px 0;border-bottom:1px solid #edf1f5}.bs4-confirm-items>div:last-child{border-bottom:0}.bs4-mini-cover{width:48px;height:66px;border-radius:7px;overflow:hidden;background:#f5f7fa}.bs4-mini-cover img{width:100%;height:100%;object-fit:contain}.bs4-confirm-items p{margin:0}.bs4-confirm-items strong,.bs4-confirm-items small{display:block}.bs4-confirm-items small{font-size:10px;color:#8792a4;margin-top:3px}.bs4-order-detail-grid aside>p{color:#5f6b80;line-height:1.7}
@media(max-width:1050px){.bs4-cart-layout,.bs4-checkout-layout,.bs4-account-grid{grid-template-columns:1fr}.bs4-summary,.bs4-checkout-summary{position:static}.bs4-checkout-gate{grid-template-columns:1fr}.bs4-gate-copy{padding:15px 5px}.bs4-order-detail-grid{grid-template-columns:1fr}}
@media(max-width:700px){.bs4-storebar-inner{padding-top:10px;padding-bottom:10px}.bs4-storebrand small{display:none}.bs4-store-actions a{padding:8px 10px}.bs4-page{padding:28px 0 55px}.bs4-pagehead{align-items:flex-start;flex-direction:column;margin-bottom:22px}.bs4-pagehead h1{font-size:38px}.bs4-panel,.bs4-summary{border-radius:17px;padding:18px}.bs4-cart-row{grid-template-columns:58px 1fr auto;gap:11px;align-items:start}.bs4-cart-cover{width:55px;height:76px}.bs4-cart-qty{grid-column:2;width:112px}.bs4-cart-row>b{grid-column:3;grid-row:2;text-align:right}.bs4-remove{grid-column:3;grid-row:1}.bs4-grid-two,.bs4-grid-three{grid-template-columns:1fr}.bs4-auth-form{padding:20px 13px}.bs4-checkout-fields h2{font-size:25px}.bs4-account-title{align-items:flex-start;flex-direction:column}.bs4-order-row{grid-template-columns:1fr auto}.bs4-order-row>b,.bs4-order-row em{grid-column:2}.bs4-status-card{grid-template-columns:1fr}.bs4-order-confirm{padding:28px 18px}.bs4-order-confirm h1{font-size:34px}.bs4-buy-actions{grid-template-columns:1fr}.bs4-qty{width:112px}.bs4-add-cart,.bs4-buy-now{grid-column:auto}.bs4-buy-now{width:100%}}

/* Phase 5 */
.bs4-phase-payment .bs4-primary{margin-top:12px}.bs4-retry-message{margin-top:10px}

/* Phase 6 */
.bs6-wishlist{width:100%;margin-top:12px;border:1px solid #dbe3f2;background:#fff;border-radius:12px;padding:12px 14px;display:flex;align-items:center;justify-content:center;gap:8px;font-weight:800;color:#334155;cursor:pointer}.bs6-wishlist span{font-size:21px;color:#cf3267}.bs6-wishlist.is-active{background:#fff3f7;border-color:#f1b4c8;color:#b51f52}.bs6-wishlist-message{font-size:12px;margin-top:6px;min-height:18px}.bs6-wishlist-message.is-success{color:#0b8b58}.bs6-wishlist-message.is-error{color:#b42318}
.bs6-marketplaces{margin-top:16px;padding-top:16px;border-top:1px solid #edf1f5}.bs6-marketplaces small{display:block;color:#8490a4;font-weight:700;margin-bottom:8px}.bs6-marketplaces>div{display:flex;gap:8px;flex-wrap:wrap}.bs6-marketplace{display:inline-flex;padding:10px 13px;border-radius:10px;text-decoration:none;font-weight:800;border:1px solid #dfe5ef;background:#fff;color:#1f2937}.bs6-marketplace:hover{border-color:#2b5adc;color:#2b5adc}
.bs6-reviews-section{margin-top:36px;background:#fff;border:1px solid #e1e7f0;border-radius:24px;padding:28px}.bs6-reviews-head{display:flex;justify-content:space-between;align-items:end;gap:20px}.bs6-reviews-head h2{margin:5px 0 6px;font-size:34px}.bs6-reviews-head p{margin:0;color:#6b7280}.bs6-review-open{border:0;background:#2b5adc;color:#fff;font-weight:800;border-radius:12px;padding:12px 18px;cursor:pointer}.bs6-review-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:22px}.bs6-review-list article{border:1px solid #e9edf4;border-radius:16px;padding:18px;background:#fafbfe}.bs6-review-list article>p{margin:14px 0 0;line-height:1.65;color:#465166}.bs6-review-meta{display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:10px}.bs6-avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:#eaf0ff;color:#2b5adc;font-weight:900}.bs6-review-meta strong,.bs6-review-meta span{display:block}.bs6-review-meta div span{color:#f0a500;letter-spacing:2px}.bs6-review-meta time{font-size:11px;color:#98a2b3}
.bs6-review-panel[hidden]{display:none}.bs6-review-panel{position:fixed;inset:0;background:rgba(15,23,42,.58);z-index:99999;display:grid;place-items:center;padding:20px}.bs6-review-dialog{width:min(520px,100%);background:#fff;border-radius:22px;padding:28px;position:relative;box-shadow:0 30px 80px rgba(0,0,0,.25)}.bs6-review-close{position:absolute;right:16px;top:12px;border:0;background:transparent;font-size:30px;cursor:pointer}.bs6-review-dialog h3{font-size:28px;margin:5px 0 18px}.bs6-review-dialog textarea{width:100%;border:1px solid #d8dfeb;border-radius:12px;padding:12px;box-sizing:border-box;margin:14px 0}.bs6-stars{display:flex;flex-direction:row-reverse;justify-content:flex-end}.bs6-stars input{display:none}.bs6-stars label{font-size:34px;color:#d7dde8;cursor:pointer}.bs6-stars input:checked~label,.bs6-stars label:hover,.bs6-stars label:hover~label{color:#f0a500}.bs6-modal-open{overflow:hidden}
.bs6-coupon-box{margin:16px 0;padding:14px;border:1px dashed #b9c9f6;background:#f8faff;border-radius:14px}.bs6-coupon-box label{font-weight:800;display:block;margin-bottom:8px}.bs6-coupon-box>div{display:flex;gap:8px}.bs6-coupon-box input{flex:1;min-width:0;border:1px solid #d8dfeb;border-radius:10px;padding:10px}.bs6-coupon-box button{border:0;border-radius:10px;background:#1f2937;color:#fff;padding:0 14px;font-weight:800}.bs6-coupon-message{display:block;margin-top:7px}.bs6-coupon-message.is-success{color:#0b8b58}.bs6-coupon-message.is-error{color:#b42318}.bs6-discount-line strong{color:#0b8b58}
.bs6-account-extras{display:grid;grid-template-columns:1.2fr .8fr;gap:26px;margin-top:26px}.bs6-wishlist-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.bs6-wishlist-grid a{text-decoration:none;color:#111827}.bs6-wishlist-grid img{width:100%;aspect-ratio:2/3;object-fit:contain;border-radius:10px;background:#f7f9fc}.bs6-wishlist-grid strong,.bs6-wishlist-grid small{display:block;margin-top:6px}.bs6-wishlist-grid small,.bs6-muted{color:#7b879a}.bs6-notification-list article{padding:13px 0;border-bottom:1px solid #edf1f5}.bs6-notification-list article:last-child{border-bottom:0}.bs6-notification-list p{margin:5px 0;color:#566176}.bs6-notification-list small{color:#98a2b3}.bs6-tracking{margin-top:26px}.bs6-tracking-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:18px 0}.bs6-tracking-grid>div{background:#f7f9fc;border-radius:12px;padding:14px}.bs6-tracking-grid small,.bs6-tracking-grid strong{display:block}.bs6-tracking-grid small{color:#8490a4;margin-bottom:5px}
@media(max-width:760px){.bs6-review-list{grid-template-columns:1fr}.bs6-reviews-head{align-items:start;flex-direction:column}.bs6-account-extras{grid-template-columns:1fr}.bs6-wishlist-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.bs6-tracking-grid{grid-template-columns:1fr}.bs6-marketplaces>div{display:grid;grid-template-columns:1fr 1fr}.bs6-marketplace{justify-content:center}}

/* v1.37.1: keep reviewer initials perfectly centered inside circular avatars. */
.bs6-review-meta .bs6-avatar{display:flex;align-items:center;justify-content:center;line-height:1;text-align:center;padding:0}