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p{color:var(--muted)}h1,.book-h1{font-size:clamp(1.55rem,6.2vw,2rem);line-height:1.18;overflow-wrap:anywhere}h2{font-size:clamp(1.3rem,5vw,1.65rem);line-height:1.22}.hero-grid,.book-product{gap:1.25rem}.hero-cover-stack{max-width:min(100%,280px);margin-inline:auto}.hero-cta-panel .btn,.book-buy-actions .btn,.btn-row .btn{width:100%;min-height:var(--touch-min)}.btn-row{flex-direction:column;align-items:stretch}main,.container,.book-body-col,.article-content{overflow-x:clip;max-width:100%}.book-tabs{gap:.25rem}.book-tabs a{min-height:var(--touch-min);display:inline-flex;align-items:center;padding:.45rem .65rem}.breadcrumb a,.breadcrumb span{min-height:var(--touch-min);display:inline-flex;align-items:center}.breadcrumb a{padding:.35rem}.filters .filter-btn{flex:0 0 auto}.magnet-form input[type=email],.field-float 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