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h1{font-size:clamp(2.3rem,4vw,4rem);line-height:1.1;margin:.4rem 0}.nh-intro p:last-child{font-size:1.18rem;line-height:1.55}.nh-notice{max-width:1250px;margin:auto;padding:1.4rem clamp(1rem,3vw,2rem);color:#d4c7ae;font-size:.97rem;line-height:1.55}.nh-wayfinding{display:grid;grid-template-columns:repeat(3,1fr);border-block:1px solid #715d3d;background:#261e16;scroll-margin-top:1rem}.nh-wayfinding a{text-align:center;text-decoration:none;padding:1.25rem .5rem;border-right:1px solid #715d3d;font-size:1.12rem}.nh-wayfinding a:last-child{border:0}.nh-wayfinding a span{color:#dabb77;margin-right:.5rem}.nh-wayfinding a[aria-current="page"],.nh-wayfinding a:hover,.nh-wayfinding a:focus-visible{background:#51402a;outline:2px solid #e9c77d;outline-offset:-3px}.nh-gallery{max-width:1250px;margin:auto;padding:0 clamp(1rem,3vw,2rem) 4rem}.nh-wing{scroll-margin-top:1.5rem}.nh-wing-head{padding:1.8rem 0 1rem;border-top:1px solid #715d3d}.nh-wing-head h2{font-size:clamp(2.2rem,4vw,3.7rem);line-height:1.1;margin:.35rem 0}.nh-wing-head p{font-size:1.1rem;line-height:1.55;max-width:840px}.nh-help{color:#e4c785}.nh-object-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin:1rem 0 2rem}.nh-object-card{display:block;text-decoration:none;background:#2b2218;border:1px solid #765e3b;transition:border-color .15s,background .15s}.nh-object-card:hover,.nh-object-card:focus-visible,.nh-object-card[aria-current="true"]{border-color:#e8c27b;background:#3c2c1d;outline:2px solid #e8c27b;outline-offset:2px}.nh-thumb,.nh-detail-image{display:block;background-repeat:no-repeat;background-size:300% 200%;background-color:#3d3122}.nh-thumb{width:100%;aspect-ratio:1.6;border-bottom:1px solid #765e3b}.nh-card-copy{display:grid;gap:.35rem;padding:1rem}.nh-card-copy small{color:#dabb77;letter-spacing:.12em;font-size:.8rem}.nh-card-copy strong{font-size:1.35rem;line-height:1.2}.nh-card-copy>span{color:#d9c8ac;font-size:.93rem}.nh-thumb-1{background-position:0% 0%}.nh-thumb-2{background-position:50% 0%}.nh-thumb-3{background-position:100% 0%}.nh-thumb-4{background-position:0% 100%}.nh-thumb-5{background-position:50% 100%}.nh-thumb-6{background-position:100% 100%}.nh-wing:nth-child(1) .nh-thumb,.nh-wing:nth-child(1) .nh-detail-image{background-image:url('../images/museum-nh-deep-time.png')}.nh-wing:nth-child(2) .nh-thumb,.nh-wing:nth-child(2) .nh-detail-image{background-image:url('../images/museum-nh-earth.png')}.nh-wing:nth-child(3) .nh-thumb,.nh-wing:nth-child(3) .nh-detail-image{background-image:url('../images/museum-nh-living.png')}.nh-detail{border:1px solid #997443;background:#241d15;scroll-margin-top:1.5rem;margin:0 0 2rem}.nh-detail-head{padding:clamp(1.2rem,3vw,2rem) clamp(1.2rem,3vw,2.2rem)}.nh-detail h3{font-size:clamp(2rem,3.3vw,3.2rem);line-height:1.1;margin:.45rem 0}.nh-summary{font-size:1.12rem;line-height:1.55;max-width:950px}.nh-detail-image{width:100%;height:clamp(260px,44vw,560px);border-block:1px solid #805f39}.nh-label{max-width:890px;margin:auto;padding:clamp(1.3rem,4vw,3rem)}.nh-facts{display:grid;grid-template-columns:repeat(2,1fr);gap:.8rem 1.6rem;margin:0 0 2rem}.nh-facts>div{border-bottom:1px solid #66523a;padding:.55rem 0}.nh-facts dt{color:#dabb77;font-size:.87rem;letter-spacing:.08em;text-transform:uppercase}.nh-facts dd{margin:.45rem 0;font-size:1.04rem;line-height:1.4}.nh-label h4{font-size:1.4rem;color:#f6e1b1;margin:1.6rem 0 .35rem}.nh-label p{font-size:1.08rem;line-height:1.7;margin:.4rem 0}.nh-question{border-top:1px solid #715d3d;padding-top:1.4rem;color:#f0d9a1}.nh-source{padding-top:1rem;color:#dbcba9}.nh-source a{color:#f4d38e;text-decoration:underline}.nh-detail-actions{display:flex;align-items:center;justify-content:space-between;gap:1rem;border-top:1px solid #715d3d;padding:1rem clamp(1rem,3vw,2rem)}.nh-detail-actions button{background:#35281b;border:1px solid #a98854;color:#f5e4c3;padding:.8rem 1rem;cursor:pointer;font:inherit;min-height:44px}.nh-detail-actions button:hover,.nh-detail-actions button:focus-visible{background:#604728;outline:2px solid #f4d38e}.nh-detail-actions span{color:#dabb77}.nh-footer{display:flex;justify-content:space-between;gap:1rem;padding:2rem clamp(1rem,4vw,4rem);background:#100e0a;color:#dabb77}.nh-footer a{color:#f0d9a1}@media(max-width:800px){.nh-object-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.nh-header{flex-wrap:wrap}.nh-wordmark{order:-1;flex-basis:100%;font-size:.8rem}}@media(max-width:520px){.nh-hero img{height:60vw;min-height:210px}.nh-wayfinding a{font-size:.89rem;line-height:1.35}.nh-wayfinding a span{display:block}.nh-object-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:.55rem}.nh-card-copy{padding:.75rem}.nh-card-copy strong{font-size:1.04rem}.nh-card-copy>span{font-size:.83rem}.nh-facts{grid-template-columns:1fr}.nh-detail-image{height:280px}.nh-detail-actions{flex-wrap:wrap}.nh-detail-actions button{flex:1 1 42%;font-size:.85rem}.nh-detail-actions span{order:-1;flex-basis:100%;text-align:center}.nh-footer{flex-direction:column}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
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