:root{--sr-ink:#20302b;--sr-green:#244b3c;--sr-sage:#6d8272;--sr-ivory:#f6f1e6;--sr-mineral:#e2ded2;--sr-clay:#a95032;--sr-line:#c8c2b5}
.sr-kicker,.sr-code{font:800 .72rem/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--sr-clay)}
.trade-concrete .hero{background:var(--sr-green);color:#fff;border-radius:0;width:min(1500px,100%)}.trade-concrete .hero-copy{background:linear-gradient(145deg,#244b3c,#18382d);color:#fff}.trade-concrete .hero-copy h1,.trade-concrete .hero-copy .lede,.trade-concrete .hero-text-number{color:#fff}.trade-concrete .hero-copy .eyebrow,.trade-concrete .hero-area,.trade-concrete .hero-text-number a{color:#f0c4a8}.trade-concrete .hero-copy .button{background:#f6f1e6;border-color:#f6f1e6;color:#20302b}.trade-concrete .hero-copy .button:hover{background:#fff}.trade-concrete .hero-copy .button.secondary{background:transparent;border-color:#fff;color:#fff}.trade-concrete .hero-copy .button.secondary:hover{background:#ffffff20}.trade-concrete .hero-visual{background:#c8c2b5}
.sr-home{padding:clamp(3rem,7vw,6rem) 0;background:var(--sr-ivory);border-block:1px solid var(--sr-line)}.sr-home-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(24rem,1.2fr);gap:clamp(2rem,6vw,6rem);align-items:start}.sr-home h2{font-family:Georgia,serif;font-size:clamp(2.4rem,4.8vw,4.8rem);font-weight:400;max-width:11ch}.sr-lead{font-size:1.08rem;line-height:1.75;color:#506059}.sr-compare{border-top:6px solid var(--sr-clay);background:#fff}.sr-compare-head,.sr-compare>div{display:grid;grid-template-columns:minmax(9rem,.42fr) 1fr;gap:1rem;padding:1rem 1.2rem;border-bottom:1px solid var(--sr-line)}.sr-compare-head{background:var(--sr-green);color:#fff;font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em}.sr-compare strong{font-family:Georgia,serif;font-size:1.08rem;color:var(--sr-green)}.sr-compare span{font-size:.86rem;line-height:1.55;color:#56635e}.sr-compare-head span{color:#fff}.sr-case{display:grid;grid-template-columns:minmax(18rem,.9fr) minmax(0,1.1fr);gap:0;margin-top:3rem;border:1px solid var(--sr-line);background:#fff}.sr-case figure{margin:0;padding:1rem;background:var(--sr-mineral)}.sr-case img{display:block;width:100%;height:380px;object-fit:contain}.sr-case figcaption{font-size:.72rem;line-height:1.5;color:#59635f;margin-top:.7rem}.sr-case>div{padding:clamp(2rem,5vw,4rem);align-self:center}.sr-case h2{font-family:Georgia,serif;font-size:2.2rem;font-weight:400}.sr-guide-index{padding-block:clamp(3.5rem,7vw,6rem)}.sr-head{display:grid;grid-template-columns:1fr .8fr;gap:3rem;align-items:end;margin-bottom:2rem}.sr-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.sr-guide{position:relative;display:grid;grid-template-columns:4rem 1fr;gap:1rem;padding:1.5rem;border:1px solid var(--sr-line);background:#fff;min-height:230px}.sr-guide:after{content:'';position:absolute;right:0;bottom:0;width:42px;height:42px;background:linear-gradient(135deg,transparent 50%,var(--sr-mineral) 50%)}.sr-guide h3{font-family:Georgia,serif;font-size:1.35rem;font-weight:400}.sr-guide p{font-size:.9rem;line-height:1.65;color:#56635e}.sr-guide a{font-weight:800}.sr-article{display:grid;grid-template-columns:minmax(14rem,.3fr) minmax(0,1fr);gap:clamp(2rem,5vw,5rem);padding-block:3.5rem 5rem}.sr-toc{position:sticky;top:1rem;align-self:start;padding:1rem;background:var(--sr-ivory);border-top:5px solid var(--sr-clay)}.sr-toc a{display:block;padding:.46rem 0;font-size:.83rem}.sr-prose section{margin-top:2.7rem;scroll-margin-top:1rem}.sr-prose .article-intro{font-size:1.18rem;color:var(--sr-ink)}.sr-record{margin-top:3rem;padding:1.4rem;background:var(--sr-ivory);border:1px solid var(--sr-line)}.sr-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem}.sr-fields>div{padding:.85rem;background:#fff;border-left:4px solid var(--sr-sage)}.sr-fields dt{font:800 .68rem ui-monospace,SFMono-Regular,Menlo,monospace;text-transform:uppercase;color:#50675c}.sr-fields dd{margin:.5rem 0 0;color:#8a918f}.sr-boundary{margin-top:2rem;padding:1.2rem;background:#f3e4dc;border-left:5px solid var(--sr-clay)}.sr-resource-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.sr-resource{padding:1.35rem;border:1px solid var(--sr-line);background:#fff}.sr-resource h3{font-family:Georgia,serif;font-size:1.12rem;font-weight:400}.sr-resource p{font-size:.86rem;line-height:1.6;color:#56635e}.sr-photos{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin:2rem 0}.sr-photos-2{grid-template-columns:repeat(2,minmax(0,1fr));max-width:58rem;margin-inline:auto}.sr-photos figure{margin:0;padding:.8rem;border:1px solid var(--sr-line);background:#fff}.sr-photos img{display:block;width:100%;height:420px;object-fit:contain;background:var(--sr-mineral)}.sr-photos figcaption{font-size:.76rem;line-height:1.5;color:#56635e;margin-top:.8rem}.faq summary span{flex:0 0 1em;width:1em;height:1em;align-self:flex-start;text-align:center}
@media(max-width:900px){.sr-home-grid,.sr-article,.sr-head{grid-template-columns:1fr}.sr-toc{position:static}.sr-photos{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.sr-grid,.sr-resource-grid,.sr-fields,.sr-case,.sr-photos,.sr-photos-2{grid-template-columns:1fr}.sr-guide{grid-template-columns:2.7rem 1fr;min-height:0}.sr-compare-head,.sr-compare>div{grid-template-columns:1fr}.sr-case img,.sr-photos img{height:auto;max-height:480px}}
.sr-signals{margin-top:3rem}.sr-signals>.sr-kicker{margin-bottom:1rem}.sr-signals .sr-card{padding:1.25rem;background:#fff;border:0;box-shadow:none}.sr-signals .sr-card:before,.sr-signals .sr-card:after{display:none}.sr-signals .sr-card h3{font-family:Georgia,serif;font-weight:400}