/* Textbook page only: preserve the supplied image bytes; display cover and QR regions. */
.qc-book{--book-ink:#153449;--book-muted:#4e6474;--book-line:#d8e4ea}.qc-book-hero{display:grid;grid-template-columns:minmax(230px,.85fr) minmax(0,1.15fr);gap:2rem;padding:2rem;border:1px solid var(--book-line);border-radius:20px;background:linear-gradient(135deg,#edf5f8,#fff 65%);color:var(--book-ink)}.qc-book-art{margin:0!important;align-self:center}.qc-book-cover{position:relative;width:100%;aspect-ratio:1080/1080;overflow:hidden;border-radius:10px;background:white}.qc-book-cover img{position:absolute!important;width:100%!important;max-width:none!important;height:auto!important;top:-16.7%;left:0;margin:0!important}.qc-book-art figcaption{font-size:.65rem;color:var(--book-muted);margin-top:.6rem;text-align:center}.qc-book-eyebrow{font-size:.65rem!important;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#357284}.qc-book-intro h2{font-size:1.75rem;line-height:1.16;font-weight:750;margin:.5rem 0}.qc-book-subtitle{font-size:1.05rem;line-height:1.4;margin:.6rem 0 1.1rem;color:#32617a}.qc-book-authors{font-weight:600}.qc-book-badges{display:flex;flex-wrap:wrap;gap:.4rem;margin:1rem 0}.qc-book-badges span{border:1px solid #cedfe7;border-radius:30px;padding:.25rem .6rem;font-size:.62rem;background:#fff}.qc-book .qc-book-buy{display:inline-flex;gap:1.2rem;align-items:center;padding:.7rem 1.15rem;background:#174e70;color:#fff;border-radius:8px;font-weight:700;box-shadow:0 5px 12px #174e7020}.qc-book .qc-book-buy:hover{background:#0e3b57}.qc-book .qc-book-buy:focus-visible{outline:3px solid #dfa335;outline-offset:4px}.qc-book-purchase-note{font-size:.65rem!important;color:var(--book-muted)}.qc-book-audience{border-left:4px solid #397b90;padding:.2rem 1.2rem;margin:2rem 0}.qc-book-audience h2{margin:.4rem 0}.qc-book-topics{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}.qc-book-topic{position:relative;border:1px solid var(--book-line);border-radius:10px;padding:1rem 1rem 1rem 3rem}.qc-book-topic>span{position:absolute;left:1rem;top:1rem;font-size:.8rem;color:#468095;font-weight:700}.qc-book-topic h3{font-size:.86rem;margin:0 0 .4rem!important}.qc-book-topic p{font-size:.72rem;margin:0;color:var(--book-muted)}.qc-book-details{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:2rem;border-top:1px solid var(--book-line);margin-top:2rem;padding-top:1rem}.qc-book-details dl{display:grid;grid-template-columns:120px minmax(0,1fr);gap:.55rem;font-size:.74rem}.qc-book-details dt{font-weight:700}.qc-book-details dd{margin:0;overflow-wrap:anywhere}.qc-book-source,.qc-book-scan p{font-size:.65rem!important;color:var(--book-muted)}.qc-book-scan{background:#f4f8fa;border-radius:12px;padding:1rem;text-align:center;color:var(--book-ink)}.qc-book-scan h3{margin:.2rem 0 .8rem}.qc-book-qr{width:140px;height:140px;position:relative;overflow:hidden;margin:0 auto;background:white}.qc-book-qr img{position:absolute!important;width:600px!important;max-width:none!important;height:auto!important;left:-230px;top:-864px;margin:0!important}[data-md-color-scheme=slate] .qc-book{--book-line:#405160;--book-muted:#bacbd6}[data-md-color-scheme=slate] .qc-book-hero{--book-muted:#4e6474}[data-md-color-scheme=slate] .qc-book-scan{--book-muted:#4e6474}@media(max-width:760px){.qc-book-hero{grid-template-columns:1fr;padding:1rem;gap:1rem}.qc-book-art{max-width:340px;margin:0 auto!important;width:100%}.qc-book-intro h2{font-size:1.45rem}.qc-book-topics{grid-template-columns:1fr}.qc-book-details{grid-template-columns:1fr;gap:1rem}.qc-book-details dl{grid-template-columns:95px minmax(0,1fr)}.qc-book-scan{max-width:300px;width:100%;justify-self:center}}