:root{color-scheme:light;--ink:#172b3b;--muted:#546d7e;--paper:#edf3f7;--teal:#166c7b;--line:#bcced9;--gold:#dba657;font-family:"Microsoft YaHei UI","PingFang SC",sans-serif;font-size:15px;color:var(--ink);background:var(--paper)}
*{box-sizing:border-box}body{margin:0;overflow:hidden}button,input,select{font:inherit}button{min-height:44px;border:1px solid #a8bdca;border-radius:6px;background:#f5f9fc;color:var(--ink);padding:9px 15px;cursor:pointer;transition:background .15s}button:hover{background:#dcebf3}button:disabled{cursor:wait;opacity:.55}button.primary{background:var(--teal);color:white;border-color:var(--teal)}button.primary:hover{background:#0f5664}button[aria-pressed=true]{background:#d0e8ec;border-color:var(--teal);box-shadow:inset 0 -3px var(--teal)}button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #c58c24;outline-offset:3px}button.text-button{border:0;background:transparent;color:var(--teal);padding:7px 4px;text-decoration:underline;text-underline-offset:4px}.wide{width:100%}[hidden]{display:none!important}p{line-height:1.75;margin:12px 0}small{color:var(--muted);font-size:12px;line-height:1.6}h1,h2,h3{line-height:1.3;margin:0}h2{font-size:25px;font-weight:600}h3{font-size:17px;margin:20px 0 8px}a{color:var(--teal)}
#world{position:absolute;inset:0;transition:inset .18s}#scene{width:100%;height:100%;display:block;touch-action:none;outline:none}#hotspots{position:absolute;inset:0;pointer-events:none}.hotspot{position:absolute;transform:translate(-50%,-50%);pointer-events:auto;border:1px solid #fff;background:#eaf4f4ef;box-shadow:0 4px 22px #162d3b20;white-space:nowrap;color:#163e4d}.hotspot::before{content:'＋';color:var(--teal);font-size:20px;vertical-align:-1px;margin-right:9px}.hotspot:hover{background:#fff}#topbar{position:absolute;z-index:3;top:20px;left:24px;right:24px;display:flex;justify-content:space-between;gap:16px;align-items:center;pointer-events:none}#topbar>*{pointer-events:auto}.location{display:flex;gap:13px;align-items:center;background:#f1f7fbea;padding:10px 18px 10px 10px;border-radius:6px}.location>span{font-size:26px;border-right:1px solid var(--line);padding:0 14px 0 4px;color:var(--teal)}.location strong{font-size:17px;display:block}.location small{display:block}nav{display:flex;gap:7px}nav button{background:#f1f7fbee}
.start-screen{position:absolute;inset:0;display:flex;align-items:center;background:linear-gradient(90deg,#eaf2f9fa 0%,#eaf2f9f7 29%,#eaf2f964 47%,transparent 64%)}.start-copy{width:450px;padding:32px 0 32px 6vw}.wordmark{font-family:Georgia,"Times New Roman",serif;font-size:39px;line-height:1.1;margin:22px 0 6px;letter-spacing:-1px}h1{font-size:53px;letter-spacing:4px;font-weight:500}.intro{font-size:18px;margin:23px 0 12px}.start-detail{color:var(--muted);font-size:14px}.title-mark{height:54px;position:relative;width:64px}.title-mark i{position:absolute;border:1.8px solid #337d8e;width:49px;height:31px;border-radius:50%;transform:rotate(-30deg);top:8px;left:4px}.title-mark i:nth-child(2){width:61px;height:40px;top:3px;left:0;opacity:.5}.title-mark i:nth-child(3){width:31px;height:19px;top:14px;left:12px;opacity:.7}#load-status{font-size:13px;color:var(--muted);margin-top:22px;min-height:22px}progress{height:6px;width:100%;accent-color:var(--teal)}.start-actions{display:flex;gap:10px;margin:12px 0 7px}.start-actions .primary{min-width:154px}.inline-actions{display:flex;flex-wrap:wrap;gap:14px}.authors{font-size:12px;color:var(--muted);margin:24px 0 3px}.development-note{font-size:11px;color:#627682;margin:0}
#walk-hint{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);padding:7px 16px;border-radius:6px;background:#f1f7fbe8;text-align:center;white-space:nowrap;font-size:13px;z-index:3}#walk-hint button{font-size:12px;margin-left:12px}#crosshair{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#f7fdff;text-shadow:0 0 3px #263e4c;font-size:20px;pointer-events:none}#transition{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);padding:15px 20px;background:#eef6fcf2;border-radius:8px;z-index:5}#transition button{margin-left:12px}
body[data-focus=true] #world{right:332px}body[data-exhibit=mapping][data-focus=true] #world{left:282px}#exhibit-panel{position:absolute;right:0;top:0;bottom:0;width:332px;padding:22px 24px;background:#edf3f7fa;overflow-y:auto;border-left:1px solid var(--line);z-index:5}.panel-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:21px;gap:8px}.panel-heading>span{font-size:13px;color:var(--muted)}.panel-heading button{font-size:13px;padding:8px 10px}#exhibit-title{margin-bottom:12px}#exhibit-content>p{font-size:14px;color:var(--muted)}.button-row{display:flex;gap:7px;flex-wrap:wrap;margin:12px 0}.button-row button{flex:1;padding:9px 10px;white-space:nowrap}.instruction{padding:10px 12px;border-left:3px solid var(--teal);background:#dfebf1;font-size:13px}.axis{display:grid;grid-template-columns:22px 1fr 36px;align-items:center;gap:8px;margin:17px 0}.axis input{width:100%;accent-color:var(--teal)}.axis output{text-align:right;font-size:13px}.toggle-line{display:flex;gap:10px;align-items:center;margin:14px 0;line-height:1.6}.toggle-line input{width:18px;height:18px;accent-color:var(--teal)}details{border-top:1px solid var(--line);margin:20px 0;padding-top:14px}summary{cursor:pointer;min-height:35px;color:var(--teal)}details p{font-size:13px}#exhibit-status{min-height:44px;font-size:13px;color:var(--teal);background:#dbe9ed;padding:9px 11px}#quiz-button{margin-top:8px}.legend{font-size:12px!important;color:var(--muted)}
#photo-panel{position:absolute;left:0;top:0;bottom:0;width:282px;z-index:5;background:#e5eef5f7;padding:20px 19px;overflow-y:auto;border-right:1px solid var(--line)}.photo-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-size:14px}#photo-frame{position:relative;width:100%;aspect-ratio:9/16;background:#101619;cursor:crosshair;touch-action:none;border-radius:3px;overflow:hidden}#photo{width:100%;height:100%;display:block;object-fit:contain}#photo-marker,#pinned-marker{position:absolute;width:19px;height:19px;border:3px solid #ffd15d;border-radius:50%;transform:translate(-50%,-50%);box-shadow:0 0 0 1px #382a0b;pointer-events:none}#photo-marker.dashed,#pinned-marker.dashed{border-style:dashed}#photo-status{font-size:12px;line-height:1.65;min-height:42px}.photo-actions{display:flex;gap:8px}.photo-actions button{flex:1;font-size:13px}#pin-photo{font-size:12px}#pinned{display:flex;align-items:center;gap:10px;margin:5px 0 12px}#pinned>div{position:relative;width:68px;flex-shrink:0}#pinned-image{width:100%;display:block}#pinned figcaption{font-size:12px;color:var(--muted)}
.hotspot.aimed{background:#fff4c9;border-color:#ca9224;box-shadow:0 0 0 3px #ffd56a60}.pointer-locked .hotspot{pointer-events:none}#crosshair.active{color:#ffd56a}#reticle-label{position:absolute;top:34px;left:50%;transform:translateX(-50%);white-space:nowrap;font-size:13px;background:#204251df;color:#fff;border-radius:4px;padding:4px 9px}#reticle-label:empty{display:none}
#projection-edit{margin:0;padding:0;border:0;min-width:0}.grid-control{display:grid;grid-template-columns:auto 1fr auto;gap:9px;align-items:center;font-size:13px;margin:14px 0}.grid-control input{width:100%;accent-color:var(--teal)}.grid-control output{min-width:55px;text-align:right}.projection-previews{display:grid;grid-template-columns:1fr 1fr;gap:10px}.projection-previews figure{margin:0;min-width:0}.projection-previews canvas{display:block;width:100%;aspect-ratio:1;border:1px solid #a8bacb;border-radius:4px;background:#f3f5fa}.projection-previews figcaption{font-size:10px;text-align:center;color:var(--muted);margin-top:5px}#projection-model{touch-action:none;cursor:move}#projection-edit:disabled #projection-model{pointer-events:none;cursor:default}.object-buttons{display:flex;gap:5px;margin:12px 0}.object-buttons button{padding:7px 5px;min-height:38px;flex:1;font-size:12px;white-space:nowrap}.object-sphere{border-top:3px solid #e63135}.object-box{border-top:3px solid #18b75d}.object-statue{border-top:3px solid #2864ff}.object-selection{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:13px}.object-selection label{display:flex;gap:8px;align-items:center}.object-selection select{max-width:140px;min-height:34px;color:var(--ink);border:1px solid var(--line);background:#f6faff;border-radius:4px}.object-selection button{min-height:34px;padding:4px 12px;font-size:12px}#placement{margin:12px 0 4px;padding-top:8px}#placement summary{font-size:13px;min-height:28px}.placement-axis{display:grid;grid-template-columns:30px 1fr 42px;gap:8px;align-items:center;margin:9px 0;font-size:12px}.placement-axis input{width:100%;accent-color:var(--teal)}.placement-axis output{text-align:right}.projection-actions{position:sticky;bottom:-22px;z-index:2;background:#edf3f7;padding:9px 0;margin:6px 0}
#notice{position:absolute;bottom:90px;left:50%;transform:translateX(-50%);max-width:min(600px,90vw);padding:12px 19px;background:#183747ed;color:#fff;border-radius:7px;z-index:30;font-size:14px;text-align:center}#modal-shade{position:absolute;inset:0;background:#203c4f66;backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:20px;z-index:20}#modal{width:min(600px,100%);max-height:88vh;overflow:auto;background:#f1f6fa;border-radius:9px;box-shadow:0 25px 90px #152f4c40;padding:25px 30px}.modal-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;border-bottom:1px solid var(--line);padding-bottom:17px;margin-bottom:20px}.modal-heading h2{font-size:24px}#modal-content>p{color:var(--muted);font-size:14px}.map-row{display:flex;gap:14px;align-items:center;border-bottom:1px solid var(--line);padding:12px 0}.map-row>span{font-size:25px;color:var(--teal);width:30px}.map-row>div{flex:1}.map-row strong{display:block}.map-row small{display:block;margin-top:4px}.quiz-option{display:block;width:100%;margin:10px 0;text-align:left;line-height:1.5}.quiz-feedback{padding:10px;background:#dcebf0;line-height:1.7}.setting{margin:18px 0}.setting>label{display:flex;align-items:center;gap:10px}.setting input[type=range]{flex:1}.pause-actions{display:grid;grid-template-columns:1fr 1fr;gap:9px}.source-note{font-size:12px;color:var(--muted)}#developer{position:absolute;left:10px;top:110px;z-index:40;background:#102a3fed;color:#d8f5ec;padding:15px;pointer-events:none;font-size:11px}
#touch-controls{position:absolute;inset:0;pointer-events:none;z-index:4}#joystick{position:absolute;left:26px;bottom:35px;width:108px;height:108px;border-radius:50%;border:2px solid #8aaebb;background:#eaf4f6a8;touch-action:none;pointer-events:auto}#joystick>span{position:absolute;left:32px;top:32px;width:40px;height:40px;border-radius:50%;background:#2f788ca8}#joystick small{position:absolute;top:113px;left:39px;white-space:nowrap}#touch-interact{position:absolute;right:30px;bottom:62px;pointer-events:auto;border-radius:50%;height:70px;width:70px;padding:0}.touch #walk-hint{bottom:15px;font-size:11px}.touch #lock-pointer{display:none}
@media(max-width:1000px) and (min-width:701px){#exhibit-panel{width:282px;padding:16px}body[data-focus=true] #world{right:282px}#photo-panel{width:210px;padding:15px}body[data-exhibit=mapping][data-focus=true] #world{left:210px}#topbar{top:12px;left:14px;right:14px}nav button{padding:8px 11px}h2{font-size:21px}}
@media(max-width:700px){.start-screen{align-items:flex-end;background:linear-gradient(0deg,#eaf2f9 0%,#eaf2f9f7 38%,#eaf2f922 75%)}.start-copy{width:100%;padding:24px 27px max(22px,env(safe-area-inset-bottom))}.title-mark{display:none}.wordmark{font-size:27px;margin:0 0 4px}h1{font-size:36px}.intro{font-size:15px;margin:12px 0 6px}.start-detail{display:none}.authors{margin-top:13px}.development-note{font-size:10px}#load-status{margin-top:14px}#topbar{left:10px;right:10px;top:10px;gap:5px}.location{padding:7px;gap:7px}.location>span{font-size:21px;padding:0 8px 0 3px}.location strong{font-size:13px}.location small{font-size:10px}nav{gap:4px}nav button{font-size:12px;padding:6px 9px}#summary-button{display:none}#walk-hint{white-space:normal;width:90%;font-size:12px;bottom:16px}#walk-hint button{margin-left:0}#exhibit-panel{top:auto;left:0;right:0;bottom:0;height:44%;width:100%;padding:12px 18px max(14px,env(safe-area-inset-bottom));border-left:0;border-top:1px solid var(--line)}body[data-focus=true] #world{right:0;bottom:44%}body[data-exhibit=mapping][data-focus=true] #world{left:0}.panel-heading{margin:0 0 7px}.panel-heading>span{font-size:12px}#exhibit-title{font-size:20px;margin:4px 0 6px}#exhibit-content>p{font-size:12px;margin:5px 0}.button-row{margin:8px 0}.button-row button{font-size:13px}.axis{margin:11px 0}#exhibit-status{font-size:12px;margin:9px 0;min-height:0}details{margin:12px 0}#photo-panel{top:54px;bottom:45%;left:7px;width:128px;padding:7px;background:#e5eef5ef;border:1px solid var(--line);border-radius:5px}#photo-frame{max-height:21vh}#photo-title{font-size:11px}#photo-count{font-size:10px}.photo-title{margin:0 0 6px}#photo-status{font-size:10px;margin:5px 0;min-height:0}.photo-actions{gap:3px}.photo-actions button{font-size:11px;padding:5px;min-height:34px}#photo-panel>small,#pin-photo,#pinned{display:none!important}#modal{padding:18px;max-height:90vh}.modal-heading h2{font-size:21px}.hotspot{font-size:12px;padding:8px 10px}#notice{bottom:47%;font-size:12px}#transition{width:85%;font-size:14px}.pause-actions{grid-template-columns:1fr 1fr}}
.model-levels{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:5px;margin:14px 0 6px}.model-levels button{padding:8px 3px;font-size:13px}#level-status{min-height:2.8em;margin:5px 0}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

.style-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;margin:12px 0}.style-choices button{display:flex;align-items:center;gap:8px;padding:9px;font-size:13px}.style-choices button:first-child{grid-column:1/-1}.style-swatches{display:flex;flex-shrink:0}.style-swatches i{width:9px;height:18px;display:block}#style-status{min-height:2.5em;margin:6px 0}#style-description{min-height:3em}

#narration-panel{border-bottom:1px solid var(--line);margin:8px 0 14px;padding-bottom:9px}.narration-label{display:flex;align-items:center;gap:8px;font-size:12px}.narration-label select{min-width:0;flex:1;max-width:100%;min-height:34px;color:var(--ink);border:1px solid var(--line);background:#f6faff;border-radius:4px}.narration-actions{margin:7px 0}.narration-actions button{font-size:12px;padding:6px;min-height:36px}#narration-status{font-size:11px;margin:5px 0;min-height:1.5em}#narration-audio{display:none}
@media(max-width:700px),(pointer:coarse){.narration-label select,.narration-actions button{min-height:44px}}
.narration-seek{display:block;width:100%;height:28px;margin:2px 0 0;padding:0;accent-color:var(--teal);cursor:pointer;touch-action:none}.narration-seek:disabled{cursor:default}.welcome-narration{border-bottom:1px solid var(--line);margin-bottom:18px;padding-bottom:10px}.welcome-narration h3{margin:0;font-size:16px}.welcome-narration .legend{font-size:12px;margin:5px 0}.welcome-narration details{margin:6px 0;font-size:13px}.welcome-narration details p{line-height:1.8;color:var(--muted)}
@media(max-width:700px),(pointer:coarse){.narration-seek{height:44px}}

body[data-exhibit=applications][data-focus=true] #world{right:400px}
body[data-exhibit=applications] #exhibit-panel{width:400px}
.application-kicker{color:var(--teal)!important;font-size:12px!important;letter-spacing:.04em}
.application-preview{margin:16px 0}.application-preview img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:5px}.application-preview figcaption{font-size:11px;color:var(--muted);margin-top:5px}
.application-link{display:block;margin-top:20px;padding:13px 16px;border-radius:6px;background:var(--teal);color:#fff;text-decoration:none;font-weight:600;line-height:1.5}.application-link:hover{background:#0f5664}.application-link small{display:block;color:#dceff1;font-size:11px;font-weight:400;margin-top:3px}.application-link span{float:right}.application-link:focus-visible{outline:3px solid #c58c24;outline-offset:3px}
@media(max-width:1000px) and (min-width:701px){body[data-exhibit=applications][data-focus=true] #world{right:340px}body[data-exhibit=applications] #exhibit-panel{width:340px}}
@media(max-width:700px){body[data-exhibit=applications][data-focus=true] #world{right:0;bottom:62%}body[data-exhibit=applications] #exhibit-panel{width:100%;height:62%}.application-preview{margin:10px 0}.application-preview img{max-height:130px;object-fit:contain;background:#dce7ed}}