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(max-width:600px){.bkbg-br-header{flex-direction:column;align-items:center;text-align:center}}.bkbg-br-cover{border-radius:8px;display:block;object-fit:cover;flex-shrink:0}.bkbg-br-cover-placeholder{border-radius:8px;background:#e5e7eb;display:flex;align-items:center;justify-content:center;min-height:220px;font-size:48px;flex-shrink:0}.bkbg-br-meta{flex:1;min-width:0}.bkbg-br-title{color:#1e1b4b;margin-bottom:4px;margin-top:0;font-family:var(--bkbg-br-title-font-family,inherit);font-weight:var(--bkbg-br-title-font-weight,800);font-style:var(--bkbg-br-title-font-style,normal);text-transform:var(--bkbg-br-title-text-transform,none);text-decoration:var(--bkbg-br-title-text-decoration,none);font-size:var(--bkbg-br-title-font-size-d,24px);line-height:var(--bkbg-br-title-line-height-d,1.25);letter-spacing:var(--bkbg-br-title-letter-spacing-d,normal);word-spacing:var(--bkbg-br-title-word-spacing-d,normal)}.bkbg-br-author{color:#6c3fb5;font-weight:600;font-size:15px;margin-bottom:12px}.bkbg-br-rating-row{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}.bkbg-br-stars{letter-spacing:2px;font-size:22px;line-height:1}.bkbg-br-rating-label{font-size:14px;color:#6b7280}.bkbg-br-detail-row{display:flex;gap:8px;margin-bottom:4px;font-size:13px}.bkbg-br-detail-label{color:#9ca3af;min-width:82px;flex-shrink:0}.bkbg-br-detail-val{color:#374151;font-weight:600}.bkbg-br-body{padding:24px 28px}.bkbg-br-section-title{font-weight:700;font-size:14px;text-transform:uppercase;letter-spacing:.06em;color:#1e1b4b;margin-bottom:8px;margin-top:0}.bkbg-br-summary{color:#374151;margin-bottom:20px;font-family:var(--bkbg-br-body-font-family,inherit);font-weight:var(--bkbg-br-body-font-weight,400);font-style:var(--bkbg-br-body-font-style,normal);text-transform:var(--bkbg-br-body-text-transform,none);text-decoration:var(--bkbg-br-body-text-decoration,none);font-size:var(--bkbg-br-body-font-size-d,15px);line-height:var(--bkbg-br-body-line-height-d,1.7);letter-spacing:var(--bkbg-br-body-letter-spacing-d,normal);word-spacing:var(--bkbg-br-body-word-spacing-d,normal)}.bkbg-br-proscons{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}@media (max-width:500px){.bkbg-br-proscons{grid-template-columns:1fr}}.bkbg-br-list-head{font-weight:700;font-size:14px;margin-bottom:8px}.bkbg-br-list{list-style:none;padding:0;margin:0}.bkbg-br-list li{display:flex;gap:8px;align-items:flex-start;margin-bottom:6px;font-size:var(--bkbg-br-body-font-size-d,15px);line-height:var(--bkbg-br-body-line-height-d,1.5);color:#374151}.bkbg-br-list-icon{flex-shrink:0;font-weight:700;margin-top:1px}.bkbg-br-btn{display:inline-block;background:#6c3fb5;color:#fff;border-radius:8px;padding:12px 32px;font-weight:700;font-size:15px;text-decoration:none;transition:opacity 0.15s,transform 0.1s;cursor:pointer}.bkbg-br-btn:hover{opacity:.88;transform:translateY(-1px);color:#fff;text-decoration:none}@media (max-width:1024px){.bkbg-br-title{font-size:var(--bkbg-br-title-font-size-t,var(--bkbg-br-title-font-size-d,24px));line-height:var(--bkbg-br-title-line-height-t,var(--bkbg-br-title-line-height-d,1.25));letter-spacing:var(--bkbg-br-title-letter-spacing-t,var(--bkbg-br-title-letter-spacing-d,normal));word-spacing:var(--bkbg-br-title-word-spacing-t,var(--bkbg-br-title-word-spacing-d,normal))}.bkbg-br-summary,.bkbg-br-list li{font-size:var(--bkbg-br-body-font-size-t,var(--bkbg-br-body-font-size-d,15px));line-height:var(--bkbg-br-body-line-height-t,var(--bkbg-br-body-line-height-d,1.7));letter-spacing:var(--bkbg-br-body-letter-spacing-t,var(--bkbg-br-body-letter-spacing-d,normal));word-spacing:var(--bkbg-br-body-word-spacing-t,var(--bkbg-br-body-word-spacing-d,normal))}}@media (max-width:767px){.bkbg-br-title{font-size:var(--bkbg-br-title-font-size-m,var(--bkbg-br-title-font-size-t,var(--bkbg-br-title-font-size-d,24px)));line-height:var(--bkbg-br-title-line-height-m,var(--bkbg-br-title-line-height-t,var(--bkbg-br-title-line-height-d,1.25)));letter-spacing:var(--bkbg-br-title-letter-spacing-m,var(--bkbg-br-title-letter-spacing-t,var(--bkbg-br-title-letter-spacing-d,normal)));word-spacing:var(--bkbg-br-title-word-spacing-m,var(--bkbg-br-title-word-spacing-t,var(--bkbg-br-title-word-spacing-d,normal)))}.bkbg-br-summary,.bkbg-br-list li{font-size:var(--bkbg-br-body-font-size-m,var(--bkbg-br-body-font-size-t,var(--bkbg-br-body-font-size-d,15px)));line-height:var(--bkbg-br-body-line-height-m,var(--bkbg-br-body-line-height-t,var(--bkbg-br-body-line-height-d,1.7)));letter-spacing:var(--bkbg-br-body-letter-spacing-m,var(--bkbg-br-body-letter-spacing-t,var(--bkbg-br-body-letter-spacing-d,normal)));word-spacing:var(--bkbg-br-body-word-spacing-m,var(--bkbg-br-body-word-spacing-t,var(--bkbg-br-body-word-spacing-d,normal)))}}