/* Original-image gallery. Frame proportions follow each photograph or artwork. */
.treasures{--tr-bg:#081710;--tr-ink:#ece6d8;--tr-muted:#a6b4a7;--tr-gold:#ddc17d;position:absolute;inset:0;display:grid;grid-template-rows:104px minmax(0,1fr) 202px;overflow:hidden;background:radial-gradient(ellipse at 72% 45%,#1a3024, var(--tr-bg) 72%);color:var(--tr-ink);font-family:"PingFang SC",sans-serif}
.treasures button{color:inherit;min-height:44px;cursor:pointer}.treasures button:focus-visible,.treasures input:focus-visible{outline:2px solid var(--tr-gold);outline-offset:3px}.treasures button:disabled{opacity:.35;cursor:default}.treasures button:hover{color:var(--tr-gold)}
.treasure-top{padding:18px 3.5%;display:flex;align-items:center;gap:26px;border-bottom:1px solid #9ba77a24;background:#091810d9;min-width:0}.treasure-top h1{font:27px/1.3 "Songti SC",STSong,serif;letter-spacing:3px;margin:5px 0 0}.treasure-top h1 small{font:11px "PingFang SC",sans-serif;letter-spacing:1px;margin-left:10px;color:var(--tr-muted)}.treasure-kicker{font-size:9px;letter-spacing:2px;color:var(--tr-gold)}.treasure-filters{display:flex;gap:16px;margin-left:auto;white-space:nowrap}.treasure-filters button{font-size:13px;border-bottom:2px solid transparent;padding:7px 3px}.treasure-filters button small{font-size:10px;opacity:.65;margin-left:5px}.treasure-filters button.active{color:var(--tr-gold);border-bottom-color:var(--tr-gold)}.treasure-directory-button{font-size:12px;border:1px solid #9aa47b4d;padding:0 14px;white-space:nowrap}.treasure-directory-button span{margin-left:10px}
.treasure-main{display:grid;grid-template-columns:minmax(0,30%) minmax(0,1fr);gap:5%;padding:20px 3.5% 12px;min-height:0;min-width:0}.treasure-copy{align-self:center;max-height:100%;overflow:auto;scrollbar-width:thin;scrollbar-color:#607858 transparent;padding:4px 5px 4px 0}.treasure-series-label{font-size:11px;letter-spacing:1px;color:var(--tr-gold);display:flex;gap:10px;align-items:center}.treasure-series-label i{width:20px;height:1px;background:#c6ae6855}.treasure-copy h2{font:clamp(26px,2.8vw,42px)/1.45 "Songti SC",STSong,serif;letter-spacing:1px;margin:22px 0;color:#f1e2ba;text-wrap:balance}.treasure-observation{font:16px/1.9 "Songti SC",STSong,serif;color:#c0cabc;margin:0 0 24px}.treasure-provenance{font-size:12px;line-height:1.8;color:var(--tr-muted)}.treasure-copy details{border-top:1px solid #a1b09530;margin-top:26px;padding-top:10px;font-size:12px;color:var(--tr-muted)}.treasure-copy summary{cursor:pointer;min-height:44px;line-height:44px}.treasure-copy details p{font-size:12px;line-height:1.8;margin:8px 0}
.treasure-stage{min-width:0;min-height:0;margin:0;display:grid;grid-template-rows:minmax(0,1fr) 44px}.treasure-artboard{position:relative;min-height:0;display:grid;place-items:center}.treasure-frame{display:block!important;width:max-content;padding:12px!important;min-height:0!important;line-height:0;border:1px solid #a19b7480!important;background:#d9d7cc!important;box-shadow:0 8px 34px #0008,0 0 0 4px #233227;cursor:zoom-in!important}.treasure-frame[hidden]{display:none!important}.treasure-frame[data-tone="dark"]{background:#1b2520!important;border-color:#817b5f!important}.treasure-frame[data-kind="object"]{background:#12261a!important;border-color:#80927840!important;box-shadow:0 10px 34px #0004,0 0 0 4px #172b1e}.treasure-thumb[data-kind="object"] img{border:0}.treasure-photo-window{display:block;position:relative;overflow:hidden;line-height:0}.treasure-photo-window img{position:absolute;max-width:none;display:block;user-select:none}.treasure-stage figcaption{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:11px;color:var(--tr-muted);border-bottom:1px solid #98a38024}.treasure-stage figcaption i{font-style:normal;opacity:.5;margin:0 7px}.treasure-enlarge{font-size:12px;color:var(--tr-gold)!important;padding:0 8px}.treasure-enlarge span{margin-left:8px}.treasure-loading{position:absolute;top:12px;left:50%;transform:translateX(-50%);font-size:12px;color:var(--tr-gold);background:#0b1b13ee;padding:10px 18px;border:1px solid #8ba87640;z-index:2;white-space:nowrap}.treasure-stage-error{position:absolute;top:30%;left:12%;right:12%;padding:24px;background:#0a1d14f5;border:1px solid #b09a654d;text-align:center;font-size:14px;z-index:3}.treasure-stage-error button{border:1px solid #a9956755;padding:0 18px}
.treasure-bottom{padding:0 3.5%;min-width:0;background:#09180fd9}.treasure-rail{height:142px;display:flex;gap:12px;overflow:auto;scrollbar-width:thin;scrollbar-color:#567249 transparent;padding:10px 0;scroll-snap-type:x proximity;border-top:1px solid #96a37526;position:relative}.treasure-rail button{position:relative;flex:0 0 112px;padding:7px;background:#112219;border:1px solid transparent;scroll-snap-align:center;text-align:left;overflow:hidden}.treasure-rail button.active{border-color:#c5a655;background:#2d3620}.treasure-thumb{height:76px;display:flex;align-items:center;justify-content:center}.treasure-thumb img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;display:block;border:1px solid #c4bc9240}.treasure-number{position:absolute;top:6px;left:7px;font-size:9px;color:var(--tr-gold);background:#07100bd0;padding:2px 3px}.treasure-rail strong{font-size:10px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:5px;font-weight:400;color:#d1d7bd}.treasure-transport{display:flex;align-items:center;gap:22px;height:60px;border-top:1px solid #a1b09525}.treasure-transport>button[data-next]{font-size:26px;width:44px;color:var(--tr-gold)}.treasure-counter{font-size:12px;letter-spacing:2px;color:var(--tr-gold);white-space:nowrap}.treasure-progress{height:1px;flex:1;background:#b8bb9540;position:relative}.treasure-progress i{position:absolute;inset:0;background:var(--tr-gold);transform:scaleX(0);transform-origin:left}.treasure-play{border:1px solid #9da97844;font-size:12px;padding:0 20px;min-width:95px}
.treasure-directory{width:min(1100px,94vw);max-height:92dvh;background:#eeede4;color:#263e2b;border:1px solid #81977e;border-radius:2px;padding:30px}.treasures dialog::backdrop{background:#020a07df;backdrop-filter:blur(7px)}.treasure-directory header{display:flex;justify-content:space-between;align-items:center;gap:20px}.treasure-directory header span{font-size:10px;letter-spacing:2px}.treasure-directory h2{font:27px/1.5 "Songti SC",STSong,serif;margin:10px 0 22px}.treasures [data-close]{font-size:28px;width:44px;flex:none}.treasure-directory label{display:flex;align-items:center;gap:18px;font-size:12px;border-block:1px solid #91a18b55;padding:12px 0;margin:6px 0 22px}.treasure-directory input{background:white;border:1px solid #97ab8c55;min-height:44px;padding:8px 14px;color:#253d29;width:300px;max-width:70%}.treasure-directory-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:22px 16px}.treasure-directory-grid button{display:flex;flex-direction:column;text-align:left;background:#e0e2d7;padding:10px;gap:8px;min-width:0}.treasure-directory-grid img{width:100%;height:145px;object-fit:contain}.treasure-directory-grid span{font-size:10px;color:#617153}.treasure-directory-grid strong{font:15px/1.6 "Songti SC",STSong,serif;font-weight:500}.treasure-directory-note{font-size:12px;line-height:1.9;border-top:1px solid #9faa9666;padding-top:20px;margin-top:28px}
.treasure-lightbox{width:min(1280px,96vw);height:92dvh;padding:0;border:1px solid #7b8166;background:#0c1b13;color:var(--tr-ink);overflow:hidden}.treasure-lightbox[open]{display:grid;grid-template-rows:auto minmax(0,1fr) 36px}.treasure-lightbox header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 22px;border-bottom:1px solid #95a58438}.treasure-lightbox h2{font:22px/1.5 "Songti SC",serif;margin:0}.treasure-lightbox header>div{display:flex;align-items:center;gap:10px;flex:none}.treasure-lightbox header button{min-width:44px;font-size:18px}.treasure-lightbox [data-zoom="reset"]{font-size:12px;padding:0 8px}.treasure-zoom-value{font-size:12px;font-variant-numeric:tabular-nums;min-width:40px;text-align:center}.treasure-lightbox-stage{overflow:auto;min-height:0;position:relative;scrollbar-color:#637456 #0c1b13}.treasure-lightbox-art{width:max-content;margin:auto;padding:20px}.treasure-lightbox p{font-size:11px;text-align:center;margin:0;line-height:36px;color:var(--tr-muted)}
.exhibit-collection-switch{font-size:12px;color:#ddc17d;border:1px solid #82956b44;padding:0 14px;min-height:40px;white-space:nowrap;margin-left:auto}.scene-treasures{display:block;margin-top:12px;font-size:13px;color:#5b714b;letter-spacing:1px;min-height:44px;text-align:left}.topbar #nav-treasures{color:#687b4c}
@media(max-width:1100px){.treasure-top{gap:18px}.treasure-top h1{font-size:24px}.treasure-top h1 small{display:block;margin:3px 0 0;font-size:10px}.treasure-filters{gap:10px}.treasure-main{grid-template-columns:minmax(0,31%) minmax(0,1fr);gap:4%}.treasure-directory-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.exhibit-sequence-hint{display:none}}
@media(max-width:760px){.treasures{grid-template-rows:115px minmax(0,1fr) 168px}.treasure-top{padding:12px 20px;flex-wrap:wrap;gap:4px;align-content:space-between}.treasure-top h1{font-size:23px;margin:0}.treasure-kicker{display:none}.treasure-top h1 small{display:inline;font-size:10px;margin-left:10px}.treasure-directory-button{margin-left:auto;padding:0 9px;font-size:11px}.treasure-filters{order:3;width:100%;justify-content:space-between;gap:10px;margin:0;overflow:auto}.treasure-filters button{font-size:12px;flex:none}.treasure-filters button small{margin-left:3px}.treasure-main{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr) auto;gap:10px;padding:10px 20px}.treasure-stage{grid-row:1}.treasure-copy{grid-row:2;max-height:138px;align-self:start;padding:0;overflow:auto}.treasure-copy h2{font-size:24px;line-height:1.45;margin:8px 0}.treasure-series-label{font-size:10px}.treasure-observation{font-size:16px;line-height:1.8;margin:8px 0}.treasure-provenance{font-size:12px}.treasure-copy details{margin-top:12px}.treasure-copy details p{font-size:14px}.treasure-frame{padding:7px!important;box-shadow:0 6px 22px #0007,0 0 0 2px #233227}.treasure-stage figcaption{font-size:10px;gap:6px}.treasure-stage figcaption i{margin:0 3px}.treasure-bottom{padding:0 15px}.treasure-rail{height:110px;gap:8px;padding:6px 0}.treasure-rail button{flex-basis:88px;padding:5px}.treasure-thumb{height:57px}.treasure-rail strong{font-size:9px;margin-top:4px;line-height:1.4}.treasure-transport{height:58px;gap:10px}.treasure-play{font-size:11px;padding:0 10px;min-width:85px}.treasure-counter{font-size:11px}.treasure-directory{padding:20px;max-height:94dvh}.treasure-directory h2{font-size:22px}.treasure-directory-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.treasure-directory-grid img{height:135px}.treasure-directory-grid strong{font-size:14px}.treasure-lightbox header{padding:10px 12px;flex-wrap:wrap;gap:4px}.treasure-lightbox h2{font-size:18px}.treasure-lightbox header>div{margin-left:auto}.treasure-lightbox header button{font-size:20px}.exhibit-collection-switch{font-size:10px;padding:0 7px}.topbar #nav-treasures{display:block}.topbar nav{gap:8px}.topbar nav button{font-size:12px;padding-inline:4px}.topbar #nav-reference,.topbar #nav-model,.topbar #nav-halls{display:none}.scene-treasures{font-size:12px}}
@media(max-width:760px) and (max-height:640px) and (orientation:landscape){.treasure-main{grid-template-columns:minmax(0,36%) minmax(0,1fr);grid-template-rows:minmax(0,1fr);gap:24px}.treasure-copy{grid-row:1;grid-column:1;max-height:100%;align-self:center}.treasure-stage{grid-row:1;grid-column:2}.treasure-copy h2{font-size:20px}.treasure-observation{font-size:16px}}
@media(prefers-reduced-motion:reduce){.treasures *{scroll-behavior:auto!important}}