/* Product information page; archival editorial design uses the approved 1897 palette and original photographic asset. */
@font-face{font-family:"IM Fell";src:url("../fonts/IMFeGPrm29P.woff") format("woff");font-display:swap}
@font-face{font-family:"IM Fell Italic";src:url("../fonts/IMFeGPit29P.woff") format("woff");font-display:swap}
@font-face{font-family:"Caslon Antique";src:url("../fonts/caslon-antique.regular.woff") format("woff");font-display:swap}
:root{--desk:#0f0c0a;--ink:#201915;--paper:#f3ece0;--cream:#d7c7a9;--gold:#c9a961;--red:#c43a26}
*{box-sizing:border-box}html{background:var(--desk);scroll-behavior:smooth}body{margin:0;color:var(--paper);background:var(--desk);font:18px/1.65 "IM Fell",Georgia,serif}a{color:inherit;text-underline-offset:4px}a:hover{color:var(--gold)}img{width:100%;max-width:100%;height:auto;display:block}h1,h2,h3,p{margin-top:0}h1,h2{font-family:"Caslon Antique",Georgia,serif;font-weight:400;line-height:1.12}h1{font-size:clamp(2.3rem,5vw,4.7rem)}h2{font-size:clamp(2rem,4vw,3.4rem)}h3{font-size:1.3rem}strong{font-weight:bold}em{font-family:"IM Fell Italic",Georgia,serif}a:focus-visible{outline:3px solid var(--gold);outline-offset:4px}.skip{position:absolute;left:15px;top:-50px;z-index:999;padding:10px 15px;background:var(--paper);color:var(--ink)}.skip:focus{top:8px}.topbar{display:flex;gap:20px;align-items:center;justify-content:space-between;padding:16px clamp(18px,3.8vw,72px);border-bottom:1px solid #46372d;min-height:80px}.brand{text-decoration:none;font-family:"Caslon Antique",Georgia,serif;letter-spacing:.09em;font-size:1.8rem}.brand span{display:block;font-family:"IM Fell",Georgia,serif;font-size:.7rem;letter-spacing:.25em}.topbar nav{display:flex;flex-wrap:wrap;gap:clamp(9px,2.5vw,30px);align-items:center;font-size:.9rem;letter-spacing:.05em}.topbar nav a{text-decoration:none}.topbar nav a[aria-current]{color:var(--gold)}.product-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);min-height:620px;max-width:1560px;margin:auto}.product-image{background:#18110d;min-width:0}.product-image picture{display:block;height:100%}.product-image img{height:100%;max-height:900px;min-height:500px;object-fit:cover;object-position:center}.product-intro{display:flex;flex-direction:column;justify-content:center;align-items:start;padding:clamp(30px,5vw,86px);background:linear-gradient(160deg,#24180e,var(--desk) 80%)}.eyebrow{font-size:.77rem;letter-spacing:.23em;color:var(--gold);text-transform:uppercase}.product-intro h1{max-width:12em;margin:22px 0}.product-intro h1 em{font-weight:400;color:var(--gold)}.lede{font-size:clamp(1.15rem,2vw,1.48rem);color:var(--cream);max-width:34rem}.numbered{font-size:.93rem;letter-spacing:.1em;border-top:1px solid #51422c;border-bottom:1px solid #51422c;padding:17px 0;width:100%;margin-top:20px}.cost{margin-top:10px;display:flex;align-items:baseline;flex-wrap:wrap;gap:15px}.cost strong{font-family:"Caslon Antique",Georgia,serif;font-size:2.8rem;font-weight:400}.cost span{color:var(--cream);font-size:1rem}.purchase{display:inline-flex;align-items:center;justify-content:center;gap:15px;text-align:center;min-height:62px;max-width:100%;padding:17px 26px;text-decoration:none;text-transform:uppercase;letter-spacing:.13em;background:#d6a01f url("../img/cloth-1897-binding-crop.webp") center/340px;color:var(--ink);border:2px solid var(--red);box-shadow:0 0 0 5px #d6a01f;font-size:.9rem}.purchase:hover{color:#140e09;filter:brightness(1.1)}.purchase-note{font-size:.9rem;color:var(--cream);margin:18px 0 0;max-width:27rem}.paper-section{background:var(--paper);color:var(--ink);background-image:linear-gradient(135deg,#f3ece0,#e1d3b9)}.paper-content,.research-content,.faq-content{max-width:1100px;margin:auto;padding:clamp(52px,8vw,106px) clamp(20px,4vw,64px)}.paper-section .eyebrow{color:#825c26}.paper-content>p:not(.eyebrow){max-width:860px;font-size:1.15rem}.spec-columns{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,6vw,86px);margin-top:42px}.spec-columns h3{color:#6a2419}.spec-columns ul{padding-left:25px;line-height:1.85}.note{font-size:.98rem;color:#635443;border-top:1px solid #c8b69c;padding-top:16px}.research-section{background:linear-gradient(100deg,#0d0a09,#251b15 50%,#0d0a09)}.research-content p:not(.eyebrow){max-width:800px;font-size:1.2rem;color:var(--cream)}.secondary-link{display:inline-block;color:var(--gold);margin-top:20px;text-decoration:none;border-bottom:1px solid #867149}.faq-section{background:#e0d3bf;color:#241c15}.faq-section .eyebrow{color:#7a3221}.faq-content{max-width:980px}.faq-content h3{margin:40px 0 8px;color:#542718}.faq-content h3+p{margin:0;max-width:820px}.faq-content a{color:#67341f}.closing{text-align:center;padding:88px 24px 96px;background:linear-gradient(#241611,#0a0807);display:flex;flex-direction:column;align-items:center;gap:12px}.closing p:not(.eyebrow){max-width:560px}.closing .purchase-note{margin:10px 0 0}footer{display:flex;justify-content:space-between;gap:32px;padding:35px clamp(20px,4vw,60px);font-size:.85rem;color:var(--cream);border-top:1px solid #514334}footer span{max-width:680px}@media(max-width:850px){.topbar{flex-direction:column;align-items:start}.product-hero{display:flex;flex-direction:column}.product-intro{order:0;padding:34px 25px 44px}.product-image{order:1}.product-image img{height:auto;max-height:none;min-height:0;max-width:720px;margin:auto}.spec-columns{grid-template-columns:1fr}footer{flex-direction:column}.purchase{white-space:normal}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media(max-width:390px){.topbar nav{font-size:.78rem}.purchase{font-size:.78rem;padding:14px 16px}}