.book-buybar-v72{position:fixed;left:50%;bottom:16px;z-index:120;width:min(1080px,calc(100% - 32px));display:grid;grid-template-columns:minmax(0,1fr) auto auto auto;gap:12px;align-items:center;padding:12px 14px 12px 18px;border:1px solid rgba(227,183,83,.55);border-radius:16px;background:rgba(3,16,27,.96);box-shadow:0 18px 50px rgba(0,0,0,.55);backdrop-filter:blur(14px);transform:translate(-50%,calc(100% + 50px));opacity:0;pointer-events:none;transition:.3s ease}
.book-buybar-v72.is-visible{transform:translate(-50%,0);opacity:1;pointer-events:auto}.book-buybar-v72 strong,.book-buybar-v72 small{display:block}.book-buybar-v72 strong{color:#f3d98d;font-size:15px}.book-buybar-v72 small{color:#9eabb5}.book-buybar-v72 .btn{min-height:40px;padding:9px 13px}.book-buybar-close-v72{width:34px;height:34px;border:1px solid rgba(227,183,83,.25);border-radius:50%;background:transparent;color:#cbd3d9;cursor:pointer;font-size:18px}.book-buybar-close-v72:hover{border-color:#e3b753;color:#f3d98d}
@media(max-width:720px){.book-buybar-v72{bottom:8px;width:calc(100% - 16px);grid-template-columns:minmax(0,1fr) auto;padding:10px;border-radius:13px}.book-buybar-v72>div small{display:none}.book-buybar-v72 .secondary{display:none}.book-buybar-v72 .btn{font-size:12px}.book-buybar-close-v72{position:absolute;right:5px;top:-38px;background:#03101b}.book-landing-v71{padding-bottom:78px}}
@media(prefers-reduced-motion:reduce){.book-buybar-v72{transition:none}}