.book-detail-hero{width:100%;background:#06233d;padding:50px 0}.book-detail-hero-container{width:calc(100% - 108px);max-width:1780px;margin:0 auto}.book-detail-hero h1{margin:0;color:#fff;font-family:Montserrat,sans-serif;font-size:46px;font-weight:800}.book-detail-page{width:100%;min-height:700px;background:#213465;padding:65px 0 100px;box-sizing:border-box}.book-detail-container{width:calc(100% - 108px);max-width:1780px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:65px}.book-detail-main{min-width:0}.book-detail-category{margin-bottom:15px;color:#20d7ff;font-family:Montserrat,sans-serif;font-size:14px;font-weight:700;text-transform:uppercase}.book-detail-title{margin:0 0 10px;color:#fff;font-family:Montserrat,sans-serif;font-size:42px;line-height:1.25;font-weight:800}.book-detail-date{margin-bottom:35px;color:#aebbd4;font-family:Montserrat,sans-serif;font-size:14px;font-weight:500}.book-detail-image-wrapper{width:100%;max-width:650px;margin-bottom:40px;overflow:hidden;border-radius:10px;background:#142548}.book-detail-image{display:block;width:100%;height:auto;max-height:750px;object-fit:contain}.book-detail-content{max-width:1000px;margin-bottom:45px;color:#d7deed;font-family:Montserrat,sans-serif;font-size:16px;line-height:1.9;font-weight:400;white-space:normal}.book-pdf-section{width:100%;margin-top:35px}.book-pdf-title{margin:0 0 20px;color:#fff;font-family:Montserrat,sans-serif;font-size:22px;font-weight:700}.book-pdf-wrapper{width:100%;height:750px;overflow:hidden;background:#ffffff;border-radius:8px}.book-pdf-viewer{display:block;width:100%;height:100%;border:0}.book-pdf-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.book-pdf-button{display:inline-block;padding:12px 20px;border:1px solid #20d7ff;border-radius:5px;color:#20d7ff;font-family:Montserrat,sans-serif;font-size:13px;font-weight:600;text-decoration:none;transition:all .3s ease}.book-pdf-button:hover{background:#20d7ff;color:#213465}.book-share-section{margin-top:40px;padding-top:25px;border-top:1px solid rgba(255,255,255,.15)}.book-share-title{margin-bottom:15px;color:#fff;font-family:Montserrat,sans-serif;font-size:17px;font-weight:700}.book-share-buttons{display:flex;flex-wrap:wrap;gap:10px}.book-share-button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:0 18px;border:0;border-radius:4px;color:#fff;font-family:Montserrat,sans-serif;font-size:13px;font-weight:600;text-decoration:none;cursor:pointer;box-sizing:border-box}.book-share-icon{font-size:17px;font-weight:700}.book-share-general{background:transparent;border:1px solid #ffffff}.book-share-facebook{background:#4867aa}.book-share-twitter{background:#20bce5}.book-share-pinterest{background:#d7192c}.book-share-whatsapp{background:#69bd5e}.book-detail-sidebar{min-width:0}.book-detail-sidebar-title{margin:0 0 25px;padding-bottom:15px;border-bottom:1px solid rgba(255,255,255,.2);color:#fff;font-family:Montserrat,sans-serif;font-size:22px;font-weight:700}.book-related-item{display:grid;grid-template-columns:105px 1fr;gap:15px;margin-bottom:20px;color:#fff;text-decoration:none}.book-related-image-wrapper{width:105px;height:145px;overflow:hidden;background:#142548;border-radius:5px}.book-related-image{display:block;width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.book-related-item:hover .book-related-image{transform:scale(1.04)}.book-related-content span{display:block;margin-bottom:7px;color:#20d7ff;font-family:Montserrat,sans-serif;font-size:11px;font-weight:700;text-transform:uppercase}.book-related-content h4{margin:0;color:#fff;font-family:Montserrat,sans-serif;font-size:14px;line-height:1.5;font-weight:600}.book-related-empty{color:#b9c4d9;font-family:Montserrat,sans-serif;font-size:14px}@media (max-width: 1000px){.book-detail-container{width:calc(100% - 60px);grid-template-columns:1fr;gap:50px}.book-detail-sidebar{width:100%}.book-detail-title{font-size:36px}}@media (max-width: 600px){.book-detail-hero{padding:40px 0}.book-detail-hero-container{width:calc(100% - 30px)}.book-detail-hero h1{font-size:32px}.book-detail-page{padding:45px 0 70px}.book-detail-container{width:calc(100% - 30px)}.book-detail-title{font-size:28px}.book-detail-content{font-size:14px;line-height:1.8}.book-pdf-wrapper{height:550px}.book-share-buttons{display:grid;grid-template-columns:1fr 1fr}.book-share-button{width:100%}}@media (max-width: 420px){.book-share-buttons{grid-template-columns:1fr}.book-pdf-buttons{flex-direction:column}.book-pdf-button{text-align:center}}