:root{--bg:#f2f1eb;--surface:#fafbf7;--ink:#354433;--muted:#687463;--accent:#61794b;--line:#dce1d3;--serif:"Songti SC","STSong","SimSun",serif;--sans:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;font-family:var(--sans);color:var(--ink);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button{border:0;background:none;color:inherit;cursor:pointer}button{min-height:44px}button:focus-visible,input:focus-visible,canvas:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button:hover{color:#293d22}button:disabled{opacity:.45;cursor:default}button:active{transform:translateY(1px)}[hidden]{display:none!important}svg{fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}#museum-app{height:100dvh;display:flex;flex-direction:column}.topbar{height:86px;flex-shrink:0;padding:0 32px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:#f9faf5;z-index:20}.brand{display:flex;align-items:center;gap:16px;text-align:left}.brand>svg{width:64px;height:32px;stroke-width:3;color:#6f8457}.brand>span{font:22px var(--serif);letter-spacing:4px}.brand small{font:9px var(--sans);display:block;margin-top:5px;letter-spacing:2.4px}.topbar nav{display:flex;gap:38px;height:100%}.topbar nav button{font-size:14px;color:var(--muted);position:relative}.topbar nav button.active{color:var(--ink)}.topbar nav button.active:after{content:"";position:absolute;bottom:0;left:25%;right:25%;height:2px;background:var(--accent)}.outline{border:1px solid #cdd6c1;padding:0 16px;border-radius:5px}.small{font-size:13px}.workspace{flex:1;display:flex;min-height:0}.sidebar{width:292px;flex-shrink:0;border-right:1px solid var(--line);background:#f9faf5;display:flex;flex-direction:column;z-index:12}.sidebar-top{padding:27px 25px 22px}.eyebrow{font-size:11px;font-weight:500;letter-spacing:1.6px;color:#74826a}.sidebar h1{font:30px/1.4 var(--serif);letter-spacing:2px;margin:17px 0 13px}.sidebar-top p{font-size:12px;color:var(--muted);margin:0}.search-wrap{margin:0 20px 16px;display:flex;align-items:center;border:1px solid var(--line);border-radius:5px;background:#f4f6ee;padding:0 10px;gap:8px}.search-wrap svg{width:18px;height:18px;color:#8b987e}.search-wrap input{height:43px;border:none;min-width:0;width:100%;background:none;font-size:13px;color:var(--ink)}.search-wrap input::placeholder{color:#849078}.floor-tabs{display:flex;padding:0 20px;gap:3px}.floor-tabs button{flex:1;padding:0 5px;font-size:12px;border-radius:4px;color:#7c8970}.floor-tabs button.active{background:#e6ecdd;color:#4b6138;font-weight:600}.list-heading{display:flex;justify-content:space-between;align-items:center;margin:8px 22px 0;font-size:11px;color:#839074;border-bottom:1px solid var(--line)}.list-heading button{font-size:11px}.list-heading button[aria-pressed=true]{color:#405b2f;font-weight:600}.hall-list{flex:1;overflow:auto;padding:8px 12px 12px;min-height:60px;scrollbar-width:thin;scrollbar-color:#ccd5bf transparent}.hall-item{width:100%;text-align:left;border-radius:5px;display:flex;gap:11px;padding:12px 10px;align-items:flex-start}.hall-item:hover{background:#eef2e6}.hall-item.active{background:#e7eddc}.hall-num{font-family:var(--serif);font-size:23px;color:#7e8f6b;width:27px;line-height:1.25;flex-shrink:0}.hall-item .hall-text{min-width:0}.hall-item strong{font-size:14px;font-weight:500;display:block;line-height:1.5}.hall-item small{display:block;font-size:11px;line-height:1.7;color:#7b8770;margin-top:3px}.hall-item .hall-arrow{margin-left:auto;color:#8a997b;font-size:14px}.empty{font-size:14px;padding:18px 10px;color:var(--muted);line-height:1.8}.sidebar-bottom{padding:14px 20px 8px;border-top:1px solid var(--line)}.reference-card{display:flex;gap:12px;width:100%;align-items:center;text-align:left;border:1px solid var(--line);border-radius:5px;overflow:hidden;padding:0;background:#f4f6ee}.reference-card img{width:83px;height:67px;object-fit:cover;opacity:.72}.reference-card span{font-size:13px}.reference-card small{display:block;font-size:10px;color:#7d8a71;margin-top:7px}.reference-card b{margin-left:14px;font-weight:400}.calibration{font-size:10px;color:#6e7e5e;display:flex;align-items:center;gap:5px;white-space:nowrap;width:100%;padding:4px 0}.calibration i{width:5px;height:5px;border-radius:50%;background:#779259}.calibration span{margin-left:auto;color:#8a947e}.viewport{position:relative;flex:1;min-width:0;overflow:hidden}#scene{display:block;width:100%;height:100%;touch-action:none;cursor:grab}.scene-heading{position:absolute;left:34px;top:35px;pointer-events:none}.scene-heading h2{font:29px/1.5 var(--serif);letter-spacing:2px;margin:13px 0 8px}.scene-heading p{font-size:12px;color:#738268;margin:0}.view-tools{display:flex;gap:10px;position:absolute;right:24px;top:26px;align-items:center}.segmented{display:flex;background:#fafbf5e6;border:1px solid var(--line);padding:3px;border-radius:5px}.segmented button{font-size:12px;padding:0 12px;min-height:34px;border-radius:3px;color:#7a896d}.segmented .active{background:#687f51;color:#fff}.tool{font-size:12px;border:1px solid var(--line);background:#fafbf5dd;border-radius:5px;padding:0 12px}.tool[aria-pressed=false]{opacity:.58}.side-tools{position:absolute;right:24px;top:114px;display:flex;flex-direction:column;background:#fafbf5e6;border:1px solid var(--line);padding:4px;border-radius:5px}.side-tools button{width:40px;font-size:23px;font-weight:300;color:#748764}.side-tools button:hover,.side-tools button[aria-pressed=true]{background:#e7eddd;border-radius:4px}.hall-detail{position:absolute;right:86px;top:96px;width:280px;background:#fafbf8f5;border:1px solid #cdd8c1;border-radius:7px;padding:23px;box-shadow:0 12px 50px #30402412;z-index:8;animation:appear .25s both}.close-icon{position:absolute;right:8px;top:5px;min-width:40px;font-size:24px;font-weight:300;color:#819171}.hall-detail .eyebrow{font-size:10px;letter-spacing:1px}.hall-detail h3{font:26px/1.4 var(--serif);margin:16px 0 8px}.hall-detail p{font-size:13px;line-height:1.85;color:var(--muted);margin:0 0 18px}.detail-meta{border-top:1px solid var(--line);padding:14px 0;display:flex;justify-content:space-between;font-size:11px;color:#7e8c73}.primary{background:#627c4c;color:#fff;border-radius:4px;padding:12px 19px;display:flex;align-items:center;justify-content:space-between;gap:25px;font-size:14px}.primary:hover{background:#526c3d;color:#fff}.hall-detail .primary{width:100%}.text-button{font-size:12px;width:100%;color:var(--muted);margin-top:3px}.bottom-dock{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:10px;z-index:6;max-width:calc(100% - 30px)}.mode-switch{display:flex;background:#fafbf7ee;box-shadow:0 4px 25px #40532709;border:1px solid #d4ddc9;border-radius:6px;padding:5px;white-space:nowrap}.mode-switch button{font-size:13px;display:flex;align-items:center;justify-content:center;gap:8px;padding:0 17px;border-radius:4px;color:#7b8a6d}.mode-switch button span{font-size:18px}.mode-switch .active{background:#e5ecd9;color:#4a6636}.view-strip{display:flex;gap:8px;white-space:nowrap}.view-strip button{min-height:32px;font-size:11px;padding:0 10px;color:#7f8e71}.view-strip button.active{background:#e6ebdecc;border-radius:4px;color:#526c3d}.range{font-size:11px;display:flex;align-items:center;gap:12px;background:#fafbf5eb;border:1px solid var(--line);border-radius:4px;padding:5px 15px;min-height:40px}.range input{accent-color:#738958;width:145px;min-height:28px}.range output{width:40px}.scene-scale{position:absolute;bottom:23px;right:24px;display:flex;flex-direction:column;align-items:flex-end;gap:6px;font-size:10px;color:#87957a;pointer-events:none}.scene-scale small{font-size:9px;color:#8e9a82}footer{height:37px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;border-top:1px solid var(--line);padding:0 25px;background:#f7f8f1;z-index:15;font-size:10px;color:#7f8e71}footer button{font-size:10px;min-height:34px}.interaction-hint{letter-spacing:.6px}#mobile-menu{display:none}.labels{position:absolute;inset:0;pointer-events:none;z-index:4}.space-label{position:absolute;left:0;top:0;transform:translate(-50%,-100%);pointer-events:auto;min-height:37px;display:flex;align-items:center;gap:8px;padding:5px 10px;background:#fafbf5f2;border:1px solid #c8d3bb;border-radius:4px;white-space:nowrap;box-shadow:0 3px 9px #3040200b;font-size:11px;color:#526942}.space-label b{font-size:12px;font-weight:600}.space-label.active{background:#5b7645;color:#fff}.space-label:after{content:"";height:12px;width:1px;position:absolute;background:#849972;left:50%;top:100%}.space-label:hover{z-index:10;background:#eef4e2}.loading{position:absolute;inset:0;z-index:25;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;background:var(--bg)}.loading strong{font:23px var(--serif);letter-spacing:3px;font-weight:400}.loading span{font-size:12px;color:var(--muted)}.building-loader{display:flex;gap:6px;align-items:end;height:36px}.building-loader i{width:16px;height:26px;background:#d9e0cf;animation:build 1.2s ease-in-out infinite}.building-loader i:nth-child(2){height:36px;animation-delay:.15s}.building-loader i:nth-child(3){height:20px;animation-delay:.3s}.scene-error{position:absolute;inset:25% 15%;background:#fafbf8;z-index:30;padding:25px;border:1px solid var(--line);border-radius:6px;line-height:1.7}.scene-error h2{font:25px var(--serif)}.scene-error p{font-size:14px}.scene-error .primary{margin-top:18px}.scene-error.reduced{inset:auto 15% 145px;padding:12px 18px;font-size:12px}.scene-error.reduced h2{font-size:18px}.scene-error.reduced p{display:none}.scene-error.reduced .primary{margin-top:4px}dialog{border:1px solid #d0d9c4;padding:0;background:#fafbf6;color:var(--ink);border-radius:10px;width:1100px;max-width:94vw;max-height:94dvh;box-shadow:0 30px 120px #20311745}dialog::backdrop{background:#26352277;backdrop-filter:blur(6px)}.dialog-top{padding:23px 30px 19px;border-bottom:1px solid var(--line);position:relative}.dialog-top h2{font:26px var(--serif);margin:10px 0 0}.dialog-top .close-icon{top:19px;right:16px}.reference-tabs{display:flex;gap:5px;padding:10px 22px;overflow:auto;white-space:nowrap}.reference-tabs button{font-size:13px;padding:0 15px;border-radius:4px}.reference-tabs button.active{background:#e6eddd;color:#4a6338}.drawing-stage{padding:5px 24px;overflow:auto;max-height:65dvh;touch-action:pan-x pan-y}.drawing-stage img{display:block;width:100%;height:auto;cursor:zoom-in;background:#fff}.drawing-stage.zoomed img{width:240%;max-width:none;cursor:zoom-out}#reference-caption{font-size:12px;color:#708065;padding:0 27px 10px;line-height:1.8}#audit-dialog{width:680px}.audit-body{padding:16px 30px 28px;font-size:15px;line-height:1.9}.audit-body dt{margin-top:20px;font-weight:600;font-size:14px}.audit-body dd{margin:5px 0 0;color:#67765b}.muted{font-size:12px;color:var(--muted)}#toast{position:fixed;left:50%;bottom:70px;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:#4b633a;color:#fff;padding:13px 21px;border-radius:5px;font-size:13px;transition:.2s;z-index:120;max-width:90vw;line-height:1.8}#toast.show{opacity:1;transform:translate(-50%,0)}#portal{position:fixed;inset:0;z-index:60;pointer-events:none;display:flex;align-items:center;justify-content:center;background:#eef1e4;animation:portalWash .72s cubic-bezier(.5,0,.2,1) both}#portal>span{font:30px var(--serif);letter-spacing:4px;color:#596e46;animation:portalTitle .72s both}.portal-frame{position:absolute;width:45vw;height:65vh;border:1px solid #718763;box-shadow:0 0 0 70px #7c92640a,0 0 0 180px #7c926408;animation:portalFly .72s cubic-bezier(.5,0,.2,1) both}.exhibit-header{height:77px;display:flex;align-items:center;padding:0 34px;gap:35px;position:relative;z-index:40;background:#091411;border-bottom:1px solid #879b791f;color:#c5cdbe}.back-button{font-size:14px;min-width:125px;text-align:left}.back-button:hover{color:#f0d489}.breadcrumbs{display:flex;gap:15px;font-size:12px;align-items:center}.breadcrumbs i{font-style:normal;color:#596b5e}.breadcrumbs strong{font-weight:400;color:#dfc680}.exhibit-header>button:last-child{margin-left:auto;font-size:13px;border:1px solid #66745955;border-radius:4px;padding:0 15px}.exhibit-header>button:hover{color:#e7d495}#exhibit-view{position:fixed;inset:0;background:#070f0c;z-index:45;color:#e8e2d2;display:flex;flex-direction:column}#exhibit-content{position:relative;flex:1;min-height:0;overflow:hidden}.exhibit-intro{position:absolute;inset:0;display:grid;grid-template-columns:39% 61%;background:#f2f1eb;color:var(--ink);overflow:auto}.exhibit-intro .intro-copy{padding:8vh 11% 50px 13%;display:flex;flex-direction:column;align-items:flex-start;justify-content:center}.intro-copy h1{font:clamp(34px,3.3vw,58px)/1.35 var(--serif);letter-spacing:2px;margin:22px 0 17px}.intro-copy .intro-subtitle{font-size:15px;line-height:1.8;color:#6d7b62;margin:0 0 27px}.intro-copy .intro-body{font-size:16px;line-height:2;color:#59684f}.intro-copy .source{font-size:11px;color:#86927b;margin-top:35px;line-height:1.8}.intro-image{position:relative;min-height:450px;background:#dfe3d7}.intro-image img{width:100%;height:100%;object-fit:cover}.intro-image figcaption{position:absolute;bottom:26px;left:28px;right:28px;font-size:12px;background:#172216b8;color:#edf0e8;padding:13px 17px;line-height:1.7}.intro-image{margin:0}.intro-missing{padding:35px;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center}.intro-missing h2{font:35px var(--serif)}.intro-missing p{font-size:15px;color:var(--muted);line-height:1.9;max-width:32em}
@keyframes appear{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@keyframes build{50%{opacity:.4;transform:scaleY(.7)}}@keyframes portalWash{0%{opacity:0}43%,80%{opacity:.98}100%{opacity:0}}@keyframes portalFly{from{transform:perspective(500px) translateZ(-300px);opacity:0}40%{opacity:.5}to{transform:perspective(500px) translateZ(480px);opacity:0}}@keyframes portalTitle{0%,20%{opacity:0}45%,70%{opacity:1}100%{opacity:0}}
@media(min-width:1700px){.sidebar{width:320px}.scene-heading{top:42px}.scene-heading h2{font-size:34px}.hall-item{padding:15px 12px}}
@media(max-width:1250px){.sidebar{width:257px}.sidebar-top{padding:23px 21px 17px}.sidebar h1{font-size:27px}.scene-heading h2{font-size:25px}.scene-heading{top:31px;left:25px}.view-tools{top:21px;right:18px}.scene-scale{display:none}.segmented button{padding:0 9px}.view-tools .tool{padding:0 10px}.topbar nav{gap:25px}.mode-switch button{padding:0 12px}.hall-detail{right:74px;top:95px;width:257px}.scene-heading p{max-width:260px;line-height:1.7}}
@media(max-width:1000px){.topbar{height:74px;padding:0 20px}.brand>svg{width:44px}.brand>span{font-size:19px}.topbar nav{gap:18px}.sidebar{width:234px}.sidebar-top{padding:22px 19px 12px}.sidebar h1{font-size:25px;margin-top:12px}.sidebar-top p{font-size:11px}.search-wrap{margin:3px 15px 10px}.floor-tabs{padding:0 14px}.sidebar-bottom{padding:12px 14px 5px}.hall-item{gap:6px;padding:11px 7px}.hall-num{font-size:21px}.hall-item strong{font-size:13px}.scene-heading{top:24px}.scene-heading h2{font-size:23px}.view-tools{top:128px;left:24px;right:auto}.side-tools{top:128px;right:18px}.hall-detail{top:192px;right:72px;width:245px;padding:20px}.mode-switch button{font-size:12px;padding:0 10px;gap:5px}.mode-switch button span{font-size:16px}.hall-detail h3{font-size:24px}.scene-heading p{max-width:none}.exhibit-intro{grid-template-columns:44% 56%}.breadcrumbs{gap:9px}.exhibit-header{gap:16px;padding:0 22px}}
@media(max-width:760px){.topbar{height:68px;padding:0 15px}.brand{gap:8px}.brand>span{font-size:17px;letter-spacing:2px}.brand small{font-size:7px;letter-spacing:1.1px}.brand>svg{width:36px}.topbar nav{gap:14px}.topbar nav button{font-size:12px}.topbar nav button:first-child{display:none}#export-model{display:none}.sidebar{position:absolute;top:68px;bottom:38px;left:0;width:min(310px,86vw);transform:translateX(-102%);transition:transform .25s;box-shadow:10px 0 35px #36492b12}.sidebar.mobile-open{transform:none}.sidebar-top{padding:20px}.sidebar h1{font-size:25px}.sidebar-top h1 br{display:none}.sidebar-top p{font-size:12px}.hall-item strong{font-size:14px}.hall-item small{font-size:12px}.viewport{width:100%}.scene-heading{top:23px;left:20px}.scene-heading .eyebrow{font-size:10px}.scene-heading h2{font-size:25px;margin-top:10px}.scene-heading p{font-size:11px;max-width:270px;line-height:1.8}.view-tools{top:135px;left:18px;gap:7px}.view-tools .tool{font-size:11px}.view-tools #capture{display:none}.segmented button{font-size:11px;min-height:32px}.side-tools{right:13px;top:136px;padding:2px}.side-tools button{width:35px;font-size:21px;min-height:40px}.bottom-dock{bottom:16px;gap:8px;max-width:calc(100% - 20px)}.mode-switch{padding:4px}.mode-switch button{font-size:11px;padding:0 9px;gap:3px;min-height:44px}.mode-switch button span{display:none}.view-strip{gap:4px}.view-strip button{font-size:10px;min-height:30px;padding:0 9px}.range{min-height:32px;font-size:10px;padding:2px 12px}.range input{width:120px}.hall-detail{top:auto;right:12px;left:12px;bottom:157px;width:auto;padding:15px 18px}.hall-detail h3{font-size:23px;margin:8px 0 5px}.hall-detail p{margin:0 0 9px;font-size:12px;line-height:1.6}.detail-meta{padding:8px 0;font-size:11px}.hall-detail .primary{padding:9px 14px;min-height:44px}.hall-detail .text-button{position:absolute;right:14px;top:44px;width:auto;font-size:11px;min-height:36px}.hall-detail h3{padding-right:95px}.hall-detail .close-icon{right:4px;top:0}.hall-detail .eyebrow{font-size:9px}.hall-detail{box-shadow:0 8px 25px #37492917}footer{height:38px;padding:0 13px;font-size:9px}footer #status{font-size:9px;max-width:52%;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}#mobile-menu{display:block;min-width:70px;text-align:left;font-size:12px}.interaction-hint{display:none}.space-label{font-size:10px;padding:4px 6px;min-height:35px;gap:4px}.space-label .label-title{display:none}.space-label b{font-size:10px}.drawing-stage{padding:0 10px;max-height:67dvh}.reference-tabs{padding:7px 10px}.reference-tabs button{font-size:12px;padding:0 11px}.dialog-top{padding:20px}.dialog-top h2{font-size:23px}#reference-caption{padding:0 17px 7px;font-size:11px}.audit-body{padding:12px 22px 23px;font-size:14px}.exhibit-header{height:68px;padding:0 15px;gap:8px}.back-button{font-size:13px;min-width:96px}.breadcrumbs{font-size:11px;gap:7px}.breadcrumbs>span:first-child,.breadcrumbs>i:first-of-type{display:none}.exhibit-header>button:last-child{font-size:11px;padding:0 9px}.exhibit-intro{display:flex;flex-direction:column}.exhibit-intro .intro-copy{padding:29px 25px 24px}.intro-copy h1{font-size:33px;margin:12px 0 13px}.intro-copy .intro-subtitle{font-size:14px;margin-bottom:12px}.intro-copy .intro-body{font-size:16px;line-height:1.9}.intro-copy .source{margin-top:12px}.intro-image{min-height:330px}.intro-image img{height:330px}.intro-image figcaption{bottom:15px;left:15px;right:15px;font-size:11px}.portal-frame{width:65vw;height:50vh}#portal>span{font-size:26px}}
@media(max-height:750px) and (min-width:761px){.sidebar-top{padding-top:18px;padding-bottom:15px}.sidebar-top h1{font-size:25px;margin:9px 0 8px}.sidebar-top h1 br{display:none}.sidebar-top p{font-size:11px}.sidebar-bottom{padding-top:9px}.reference-card img{height:51px}.hall-item{padding-top:10px;padding-bottom:10px}.scene-heading{top:28px}.bottom-dock{bottom:15px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}
.artifact-exhibition{position:absolute;inset:0;overflow:hidden;background:radial-gradient(ellipse at 75% 43%,#1b3026 0,#0e1d17 37%,#070f0c 75%);color:#e7e2d2;--gold:#dec178;--art-muted:#a6ada0}.artifact-heading{position:absolute;left:5.5%;top:27px;display:flex;align-items:center;gap:15px;z-index:6}.artifact-heading>span{font:23px var(--serif);letter-spacing:5px;color:#d7bd77}.artifact-heading i{width:27px;height:1px;background:#b995505c}.artifact-heading small{font-size:11px;color:#9caa92;letter-spacing:1px}.artifact-canvas-wrap{position:absolute;left:43%;right:0;top:30px;bottom:95px}.artifact-canvas{width:100%;height:100%;display:block;touch-action:none;cursor:grab;outline-color:#d2b770}.artifact-copy{position:absolute;left:5.5%;top:50%;transform:translateY(-50%);width:35%;max-width:470px;max-height:calc(100% - 195px);overflow:auto;scrollbar-width:thin;scrollbar-color:#526246 transparent;padding:8px 5px 12px 0}.artifact-category{font-size:10px;letter-spacing:2px;color:#bfa870;line-height:1.8}.artifact-copy h1{font:clamp(29px,3.25vw,53px)/1.3 var(--serif);letter-spacing:1px;color:#efdaa1;margin:17px 0 9px;font-weight:500;text-wrap:balance}.artifact-pinyin{font-size:10px;letter-spacing:1.8px;text-transform:uppercase;color:#80917f;margin:0 0 14px}.artifact-findspot{font:14px var(--serif);color:#b8c4ac;letter-spacing:1px}.artifact-rule{height:1px;background:linear-gradient(90deg,#b8985255,transparent);margin:24px 0 20px}.artifact-quote{font:22px/1.6 var(--serif);color:#e0d5b6;margin:0 0 5px;letter-spacing:1px}.artifact-source{font-size:11px;color:#81937d;margin:7px 0 17px}.artifact-body{font-size:16px;line-height:1.95;color:#b0bbab;font-family:var(--serif);margin:0}.artifact-features{font-size:12px;color:#cdb779;margin:20px 0;display:flex;align-items:center;gap:9px;flex-wrap:wrap;line-height:1.8}.artifact-features i{font-style:normal;color:#657b60}.artifact-craft{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.artifact-craft>span{font-size:11px;color:#8f9f85;margin-right:7px}.artifact-craft b{font-size:11px;font-weight:400;border:1px solid #a48a483f;padding:6px 10px;border-radius:2px;color:#c5af79}.artifact-gesture{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);font-size:10px;letter-spacing:1px;color:#73876e;white-space:nowrap}.artifact-tools{position:absolute;right:6%;bottom:4px;display:flex;gap:3px}.artifact-tools button{font-size:12px;min-width:42px;min-height:40px;color:#91a080}.artifact-tools button:hover,.artifact-tools button[aria-pressed=true]{color:#e4c782}.artifact-footer{position:absolute;bottom:0;left:0;right:0;display:flex;align-items:center;gap:23px;padding:17px 5.5% 23px;border-top:1px solid #7a90622a;background:#08120e8c;z-index:8}.artifact-footer button{font-size:20px;color:#c7b67f;min-width:44px}.artifact-footer button[data-art=tour]{font-size:12px;border:1px solid #92a2723c;border-radius:3px;padding:0 15px}.artifact-counter{font-size:12px;letter-spacing:2px;color:#c6ad6d;white-space:nowrap}.artifact-track{height:1px;background:#c4cba824;flex:1;position:relative}.artifact-track i{position:absolute;inset:0;background:#c4ae6b;transform-origin:left;transition:transform .35s}.artifact-loading{position:absolute;inset:20% 12%;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:25px;color:#9da98f;font-size:12px;background:#0d1c1508}.artifact-skeleton{width:60%;height:120px;border:1px solid #b2a57133;background:linear-gradient(100deg,transparent,#a9955722,transparent);background-size:200% 100%;animation:build 1.4s infinite;border-radius:8px}.artifact-error{position:absolute;inset:25% 10%;text-align:center;padding:20px;color:#b6c2a9;background:#10231ce8;font-size:14px;line-height:1.9}.artifact-error button{border:1px solid #a28f5755;padding:8px 20px;color:#d8c187}.artifact-catalog{position:absolute;top:0;right:0;bottom:89px;width:350px;max-width:90%;z-index:20;background:#0b1914f7;border-left:1px solid #7e946344;box-shadow:-20px 0 80px #0004;padding:30px 22px;overflow:auto}.artifact-catalog h2{font:22px var(--serif);font-weight:400;letter-spacing:2px;color:#d8bd7c;margin:9px 0 23px}.artifact-catalog-close{position:absolute;right:12px;top:5px;font-size:25px;width:40px;color:#b4c09f}.artifact-catalog [data-product]{width:100%;display:flex;align-items:center;gap:13px;font-size:14px;line-height:1.6;text-align:left;min-height:65px;border-bottom:1px solid #74886224;color:#bec9b5}.artifact-catalog [data-product].active{color:#e6ca84}.artifact-catalog [data-product] span{font:23px var(--serif);color:#869974}.artifact-catalog [data-product] b{margin-left:auto;font-size:14px;font-weight:400}.artifact-exhibition button:focus-visible{outline-color:#d3b777}.artifact-exhibition button:hover{color:#efd9a3}
@media(max-width:1000px){.artifact-heading{left:5%;top:22px}.artifact-copy{left:5%;width:39%;max-height:calc(100% - 165px)}.artifact-copy h1{font-size:33px}.artifact-heading small{font-size:10px}.artifact-rule{margin:18px 0 16px}.artifact-quote{font-size:20px}.artifact-body{font-size:15px}.artifact-source{margin-bottom:13px}.artifact-features{margin:13px 0}.artifact-craft>span{display:none}.artifact-tools{right:8px}.artifact-gesture{bottom:55px}.artifact-canvas-wrap{left:45%;top:35px;bottom:100px}}
@media(max-width:760px){.artifact-heading{left:23px;right:16px;top:17px;gap:10px}.artifact-heading>span{font-size:20px;letter-spacing:3px}.artifact-heading small{font-size:9px;letter-spacing:.5px}.artifact-heading i{width:15px}.artifact-canvas-wrap{left:0;right:0;top:50px;height:39%;bottom:auto}.artifact-copy{left:24px;right:24px;top:calc(39% + 55px);bottom:79px;width:auto;max-width:none;max-height:none;transform:none;padding:0 0 16px;overscroll-behavior:contain}.artifact-copy h1{font-size:29px;line-height:1.4;margin:10px 0 6px;text-wrap:balance}.artifact-category{font-size:9px;letter-spacing:1.5px}.artifact-pinyin{font-size:9px;margin:0 0 9px;line-height:1.7}.artifact-findspot{font-size:12px;margin:7px 0}.artifact-rule{margin:15px 0 12px}.artifact-quote{font-size:20px}.artifact-body{font-size:16px;line-height:1.9}.artifact-source{font-size:10px;margin:5px 0 12px}.artifact-features{font-size:12px;margin:14px 0}.artifact-footer{padding:12px 15px 15px;gap:10px}.artifact-footer button{min-width:35px;min-height:44px}.artifact-footer button[data-art=tour]{font-size:11px;padding:0 10px}.artifact-counter{font-size:11px;letter-spacing:1px}.artifact-gesture{left:20px;bottom:6px;transform:none;font-size:9px}.artifact-tools{right:10px;bottom:0}.artifact-tools button{font-size:11px;min-height:36px;min-width:38px}.artifact-catalog{bottom:72px;width:320px}.artifact-loading{inset:10% 10%}.artifact-skeleton{height:60px}.artifact-error{inset:10% 10%;font-size:12px;padding:13px}.artifact-error button{font-size:12px;min-height:34px}.artifact-heading small{max-width:200px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}}
body[data-scope="all"] .space-label .label-title{display:none}body[data-mode="explode"] .space-label{font-size:11px}
.space-label:after{height:var(--leader-height,12px)}
.intro-image.location-image{background:#f6f7f0}.intro-image.location-image img{object-fit:contain;padding:25px}

/* Visual demo: building first, one supplied exhibit experience, optional tools. */
.topbar{height:76px;background:#f9faf5e8}.topbar nav{gap:30px}.workspace{position:relative}.sidebar{position:absolute;top:0;bottom:0;left:0;width:292px;transform:translateX(-104%);transition:transform .25s;box-shadow:10px 0 35px #36492b12;z-index:15}.sidebar.mobile-open{transform:none}.viewport{width:100%}.scene-heading{left:5%;top:36px;z-index:5}.scene-heading h2{font-size:clamp(26px,2.4vw,38px);margin:12px 0 9px;letter-spacing:2px}.scene-heading p{font-size:14px;line-height:1.8;color:#63765a;max-width:none}.scene-cta{margin-top:22px;pointer-events:auto;font-size:14px;padding:11px 18px;min-height:44px;gap:35px}.demo-badge{position:absolute;right:34px;top:35px;font-size:11px;letter-spacing:1px;color:#6c7d60;display:flex;gap:10px;align-items:center}.demo-badge b{font-size:10px;font-weight:500;border:1px solid #bdc8ae;padding:5px 7px;border-radius:2px}.view-tools{top:76px;right:32px;left:auto;max-width:calc(100% - 35px);background:#fafbf7f5;padding:10px;border:1px solid var(--line);border-radius:6px;z-index:18;flex-wrap:wrap}.side-tools{right:27px;top:50%;transform:translateY(-50%);background:#fafbf5b5}.side-tools button{width:38px;font-size:22px;min-height:44px}.side-tools #night,.side-tools #zoom-in,.side-tools #zoom-out{display:none}.settings-open .side-tools button{display:block!important}.advanced-control,.view-strip{display:none!important}.settings-open .advanced-control{display:flex!important}.settings-open .view-strip{display:flex!important}.bottom-dock{bottom:29px;gap:12px}.mode-switch{padding:6px;gap:3px;box-shadow:0 6px 30px #40532710}.mode-switch button{font-size:14px;padding:0 24px;min-height:46px}.mode-switch button span{font-size:19px}.mode-switch .active{background:#637c4f;color:#fff}.scene-scale{left:34px;right:auto;bottom:32px;align-items:flex-start;gap:8px;color:#5f7453;font-size:11px}.scene-scale small{color:#728465;font-size:10px}.guide-floors{position:absolute;right:34px;top:88px;display:none;gap:4px;background:#fafbf5df;border:1px solid var(--line);border-radius:5px;padding:4px;z-index:6}.guide-floors button{min-width:49px;font-size:13px;border-radius:3px;color:#62764f}.guide-floors button.active{background:#e2ebd7;color:#344e25}.demo-legend{position:absolute;left:5%;top:151px;color:#566e43;display:none;align-items:center;gap:8px;font-size:12px}.demo-legend i{width:7px;height:7px;background:#9b7843;border-radius:50%}body:not([data-mode="assembled"]) .guide-floors{display:flex}body:not([data-mode="assembled"]) .demo-legend{display:flex}body.settings-open .guide-floors{top:155px}body[data-mode="assembled"] .range{display:none!important}.space-label{min-height:44px;border-color:#ccd6c0;color:#647653;background:#fafbf5e6;font-size:12px;padding:6px 11px}.space-label b{font-size:12px;font-weight:500}.space-label.demo-entry{background:#526c3f;color:#fff;border-color:#526c3f;box-shadow:0 5px 20px #41532c25;gap:9px;padding:8px 13px;min-height:51px}.space-label.demo-entry:hover{background:#3f592d;color:#fff}.space-label.demo-entry .label-title{display:inline!important;font-size:13px}.space-label.demo-entry small{font-size:10px;opacity:.85;border-left:1px solid #ccdcb05e;padding-left:8px}.space-label.demo-entry:after{background:#526c3f}#mobile-menu{display:block;font-size:12px;min-height:38px}.hall-detail{display:none!important}footer{height:42px;background:#f9faf5;color:#617554;font-size:11px}footer button{font-size:11px;min-height:40px}.hall-item small{color:#627554}.hall-item strong{font-size:15px}.exhibit-header{height:68px;background:#091411;border-bottom:1px solid #879b7918}.artifact-heading>span{font-size:20px;letter-spacing:3px}.artifact-heading small{color:#a2b398}.artifact-canvas-wrap{left:30%;right:0;top:15px;bottom:87px}.artifact-copy{left:5.5%;width:29%;max-width:400px;max-height:calc(100% - 200px)}.artifact-copy h1{font-size:clamp(32px,3.25vw,53px);line-height:1.38}.artifact-quote{font-size:19px;line-height:1.7;color:#cbbb93}.artifact-details{margin-top:25px;border-top:1px solid #a9935638;padding-top:5px}.artifact-details summary{cursor:pointer;min-height:44px;display:flex;align-items:center;gap:15px;font-size:13px;color:#b8c1aa;list-style:none}.artifact-details summary:after{content:"＋";font-size:16px;color:#bfa36b}.artifact-details[open] summary:after{content:"−"}.artifact-details summary:focus-visible{outline:2px solid #d3b777;outline-offset:3px}.artifact-details .artifact-body{font-size:16px}.artifact-details .artifact-findspot{margin-top:7px}.artifact-source{color:#a3b199}.artifact-category{font-size:11px;color:#c9b77e}.artifact-footer{padding-bottom:20px;gap:24px}.artifact-tools{bottom:7px}.artifact-tools button{min-width:44px;min-height:44px;color:#adbb9c}.artifact-gesture{font-size:11px;color:#9aae90;bottom:22px}.artifact-exhibition .artifact-footer button[data-art=tour]{min-width:98px;min-height:44px;font-size:13px}.artifact-track{background:#c4cba842}#portal{background:#0c1c14;animation:demoWash .95s cubic-bezier(.5,0,.2,1) both}#portal>span{color:#d3bf89;font-size:26px;animation-duration:.95s}.portal-frame{border-color:#c6ad6a;box-shadow:0 0 60px #a9914630,0 0 0 70px #7c92640a,0 0 0 180px #7c926408;animation-duration:.95s}
@keyframes demoWash{0%{opacity:0}42%,80%{opacity:1}100%{opacity:0}}
@media(max-width:1000px){.scene-scale{display:none}.scene-heading{left:30px;top:30px}.scene-heading h2{font-size:30px}.scene-heading p{font-size:13px}.demo-legend{left:30px}.artifact-copy{width:32%;left:4%;top:48%}.artifact-canvas-wrap{left:33%}.artifact-copy h1{font-size:34px}.artifact-quote{font-size:18px}.artifact-heading{left:4%}.artifact-gesture{left:50%;bottom:60px}.topbar nav{gap:20px}.topbar{padding:0 22px}.view-tools{top:80px;left:auto;right:24px}}
@media(max-width:760px){.topbar{height:68px;padding:0 13px}.brand>svg{width:30px}.brand>span{font-size:16px;letter-spacing:1px}.topbar nav{gap:12px}.topbar nav button{font-size:12px}.topbar nav button:first-child{display:none}#nav-reference{display:none}#view-settings{font-size:11px;padding:0 9px;min-height:40px}.sidebar{top:0;bottom:0;width:min(310px,86vw)}.scene-heading{left:22px;right:15px;top:25px}.scene-heading h2{font-size:26px;letter-spacing:1px;line-height:1.4;margin:12px 0 8px}.scene-heading p{font-size:12px;max-width:290px}.scene-heading .eyebrow{font-size:10px}.scene-cta{margin-top:17px;font-size:13px;gap:26px}.demo-badge{right:18px;top:26px;font-size:0;gap:0}.demo-badge b{font-size:9px;padding:3px 5px}.guide-floors{top:151px;right:18px;left:22px;justify-content:space-between}.guide-floors button{flex:1;min-height:44px;font-size:12px}.demo-legend{top:210px;left:22px;font-size:11px}.side-tools{right:12px;top:52%;padding:2px}.side-tools button{width:33px;min-height:44px;font-size:21px}.view-tools{top:75px;left:15px;right:15px;padding:8px;gap:6px}.view-tools .tool{font-size:11px;padding:0 9px}.view-tools .segmented button{min-height:40px}.settings-open .guide-floors{top:165px}.settings-open .demo-legend{top:220px}.bottom-dock{bottom:18px;max-width:calc(100% - 22px)}.mode-switch{padding:4px;gap:2px}.mode-switch button{font-size:12px;padding:0 13px;min-height:46px}.mode-switch button span{display:none}.range{font-size:11px;padding:3px 10px;min-height:38px}.scene-scale{display:none}.space-label{min-height:44px;padding:6px 9px}.space-label b{font-size:11px}.space-label.demo-entry{min-height:50px;padding:7px 10px;gap:7px}.space-label.demo-entry .label-title{font-size:12px}.space-label.demo-entry small{display:none}footer{height:42px;padding:0 12px}footer #status{font-size:10px;max-width:42%}#mobile-menu{font-size:11px}#full-screen{font-size:10px}.exhibit-header{height:62px;padding:0 14px;gap:5px}.exhibit-header>button:last-child{min-height:40px;font-size:11px}.breadcrumbs>span,.breadcrumbs>i{display:none}.breadcrumbs strong{font-size:10px}.back-button{font-size:12px;min-width:88px}.artifact-heading{top:18px;left:23px;right:15px;gap:11px}.artifact-heading>span{font-size:18px;letter-spacing:2px}.artifact-heading small{font-size:10px}.artifact-canvas-wrap{left:0;right:0;top:54px;height:52%;bottom:auto}.artifact-copy{left:25px;right:25px;top:calc(52% + 48px);bottom:78px;width:auto;max-width:none;max-height:none;transform:none;padding:0 0 20px;overflow:auto}.artifact-copy h1{font-size:29px;line-height:1.35;margin:9px 0}.artifact-category{font-size:10px}.artifact-quote{font-size:17px;line-height:1.6;margin:5px 0}.artifact-details{margin-top:14px;padding-top:1px}.artifact-details summary{font-size:13px}.artifact-details .artifact-body{font-size:16px;line-height:1.85}.artifact-footer{padding:10px 15px 14px;gap:12px}.artifact-footer button{min-width:44px;min-height:44px}.artifact-exhibition .artifact-footer button[data-art=tour]{font-size:12px;min-width:91px;padding:0 9px}.artifact-counter{font-size:11px}.artifact-gesture{bottom:8px;left:20px;transform:none;font-size:10px}.artifact-tools{right:13px;bottom:0}.artifact-tools button{font-size:11px;min-width:40px;min-height:44px}.artifact-catalog{bottom:70px}.artifact-loading{inset:20% 10%}.artifact-skeleton{height:85px}.artifact-error{font-size:14px}.artifact-error button{min-height:44px;font-size:13px}#portal>span{font-size:23px}}
@media(max-height:650px) and (min-width:761px){.artifact-copy{max-height:calc(100% - 145px);top:47%}.artifact-copy h1{font-size:32px}.artifact-heading{top:12px}.scene-heading{top:20px}.scene-heading h2{font-size:28px}.scene-cta{margin-top:12px}.demo-legend{top:133px}}
.space-label:active{transform:translate(-50%,-100%)}

@media(max-width:760px){.artifact-copy{top:calc(52% + 68px)}}

/* Seven artifacts remain visible; the selection rail shares the stage. */
.exhibit-sequence-hint{margin-left:auto;color:#a7b79b;font-size:12px;letter-spacing:1px;white-space:nowrap}.artifact-rail{position:absolute;left:5.5%;right:5.5%;bottom:78px;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:12px;padding:12px 0 8px;border-top:1px solid #81985f24;z-index:10;background:#0b191344}.artifact-rail [data-product]{position:relative;min-width:0;min-height:132px;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;gap:5px;padding:8px 7px 9px;border:1px solid transparent;border-radius:5px;color:#a6b697;background:#72835906;transition:border-color .2s,background-color .2s,color .2s}.artifact-rail [data-product]:hover{background:#9baf6b12;border-color:#a8b58936;color:#f0d79a}.artifact-rail [data-product].active{border-color:#c4a86699;background:#c3a15e13;color:#ecd395;box-shadow:inset 0 -2px #b99b58}.artifact-rail img{display:block;width:100%;height:72px;object-fit:contain;pointer-events:none;opacity:.78;transition:opacity .2s}.artifact-rail .active img,.artifact-rail button:hover img{opacity:1}.artifact-rail [data-product]>span:not(.artifact-product-name){position:absolute;top:8px;left:9px;font-size:10px;font-variant-numeric:tabular-nums;color:#a7b28e;letter-spacing:1px}.artifact-product-name{font-size:12px;line-height:1.5;text-wrap:balance;text-align:center;max-width:100%;display:block;font-weight:400}.artifact-canvas-wrap{bottom:235px;top:15px}.artifact-copy{top:38%;max-height:calc(100% - 330px)}.artifact-footer{padding-top:11px;padding-bottom:15px;min-height:71px}.artifact-tools{right:6%;bottom:0}.artifact-gesture{left:50%;bottom:15px;font-size:11px}.artifact-exhibition .artifact-details{margin-top:20px}.artifact-rail [data-product]:focus-visible{outline:2px solid #d8bd7a;outline-offset:3px}.artifact-rail [data-product]:active{transform:none}
@media(max-width:1100px) and (min-width:761px){.artifact-rail{left:4%;right:4%;gap:7px;bottom:78px}.artifact-rail [data-product]{min-height:130px;padding:8px 4px}.artifact-product-name{font-size:11px}.artifact-rail img{height:70px}.artifact-canvas-wrap{left:35%;bottom:230px}.artifact-copy{width:30%;left:4%;top:37%;max-height:calc(100% - 310px)}.artifact-copy h1{font-size:32px}.artifact-quote{font-size:17px}.artifact-gesture{left:12px;bottom:13px;transform:none;font-size:10px}.artifact-tools{right:2px}}
@media(max-width:760px){.exhibit-sequence-hint{font-size:10px;letter-spacing:0}.exhibit-header .breadcrumbs{display:none}.artifact-rail{left:13px;right:13px;bottom:70px;gap:4px;padding:9px 0 8px;background:#0b1913dd}.artifact-rail [data-product]{min-height:69px;height:69px;padding:4px 1px 14px;border-radius:4px;gap:0}.artifact-rail img{width:100%;height:48px;opacity:.8}.artifact-rail [data-product]>span:not(.artifact-product-name){top:auto;left:0;right:0;bottom:3px;font-size:9px;text-align:center;line-height:12px}.artifact-rail .artifact-product-name{display:none}.artifact-canvas-wrap{left:0;right:0;top:53px;height:45%;bottom:auto}.artifact-copy{left:24px;right:24px;top:calc(45% + 65px);bottom:168px;width:auto;max-width:none;max-height:none;transform:none;padding-bottom:10px}.artifact-copy h1{font-size:27px;margin:8px 0}.artifact-quote{font-size:16px;line-height:1.6;margin:4px 0}.artifact-exhibition .artifact-details{margin-top:12px}.artifact-details summary{min-height:44px}.artifact-gesture{left:19px;bottom:6px;transform:none;font-size:10px;max-width:50%;white-space:normal;line-height:1.5}.artifact-tools{right:12px;bottom:0}.artifact-footer{min-height:70px;padding:10px 13px 14px;gap:10px}.artifact-counter{font-size:10px}.artifact-exhibition .artifact-footer button[data-art=tour]{min-width:88px;font-size:12px}}
@media(max-height:650px) and (min-width:761px){.artifact-rail [data-product]{min-height:94px;padding-top:3px;padding-bottom:4px}.artifact-rail img{height:49px}.artifact-product-name{font-size:10px;line-height:1.3}.artifact-rail{bottom:64px;padding-top:5px}.artifact-canvas-wrap{bottom:175px;top:0}.artifact-copy{top:34%;max-height:calc(100% - 200px)}.artifact-footer{min-height:59px;padding:5px 4%}.artifact-copy h1{font-size:29px}.artifact-heading{top:10px}.artifact-quote{font-size:16px}.artifact-exhibition .artifact-details{margin-top:10px}}

/* Original supplied museum lockup: never redraw, tint, stretch or crop. */
.brand{padding:0;flex-shrink:0}.brand-lockup{display:block;width:168.75px;height:60px;object-fit:contain;border-radius:2px}.topbar{min-height:76px}
@media(max-width:760px){.topbar{min-height:68px}.brand-lockup{width:140.625px;height:50px}}
@media(max-width:420px){.brand-lockup{width:123.75px;height:44px}}