:root{--ink:#173f37;--muted:#75817b;--paper:#f5f4ee;--accent:#087f70;--line:#dce1d8;--sand:#e7bc72;--shadow:0 12px 44px #1c3d2d18;font-family:'PingFang SC','Microsoft YaHei',sans-serif;color:var(--ink);background:#e9eee7}*{box-sizing:border-box}body{margin:0;overflow:hidden}button,input{font:inherit}button{cursor:pointer;border:0;background:none;color:inherit;transition:background .18s,transform .18s}button:hover{background:#e4eae0}button:active{transform:translateY(1px)}button:focus-visible,input:focus-visible{outline:3px solid #d7aa62;outline-offset:3px}button:disabled{opacity:.4;cursor:not-allowed}p{line-height:1.65;text-wrap:pretty}.hidden{display:none!important}#scene,#markers{position:absolute;inset:0}#scene canvas{display:block;touch-action:none}#markers{pointer-events:none;overflow:hidden}.pin{position:absolute;transform:translate(-50%,-100%);display:flex;align-items:center;gap:7px;border:1px solid #fff;background:#fffffff2;border-radius:7px;padding:5px 9px 5px 5px;box-shadow:0 4px 10px #1c3d2d20;pointer-events:auto;white-space:nowrap;font-size:11px;font-weight:600}.pin:after{content:'';position:absolute;bottom:-6px;left:50%;border-left:5px solid transparent;border-right:5px solid transparent;border-top:6px solid white}.pin span{display:grid;place-items:center;width:23px;height:23px;background:var(--ink);color:#fff;border-radius:5px;font-family:Georgia}.pin.selected{background:var(--accent);color:white;z-index:3}.pin.selected span{background:white;color:var(--accent)}header{height:82px;position:absolute;inset:0 0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 30px;background:#fbfcf8ed;border-bottom:1px solid #d8e0d4;backdrop-filter:blur(12px);z-index:20}.brand{display:flex;align-items:center;gap:13px;text-align:left;padding:0}.brand-mark{width:44px;height:44px;background:var(--ink);color:var(--paper);display:grid;place-items:center;border-radius:50%;font-family:serif;font-size:25px;border:3px double #c9d3c4}.brand b{font-size:16px;letter-spacing:3px}.brand small{display:block;font-size:10px;letter-spacing:2px;margin-top:5px;color:var(--muted)}.mode-switch{display:flex;padding:4px;background:#e9ede5;border-radius:11px}.mode-switch button{padding:9px 22px;border-radius:8px;font-size:12px}.mode-switch button.active{background:#fff;box-shadow:0 2px 5px #0001;font-weight:600}.header-actions{display:flex;align-items:center;gap:12px;font-size:11px}.live-dot,.tiny-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}.icon-button{width:28px;height:28px;border:1px solid var(--line);border-radius:50%;font-size:17px;display:grid;place-items:center}.header-note{margin-right:8px}#directory{position:absolute;left:22px;top:104px;bottom:80px;width:294px;border:1px solid #ffffffb3;border-radius:16px;background:#fbfcf7f5;backdrop-filter:blur(16px);box-shadow:var(--shadow);padding:24px 20px 0;display:flex;flex-direction:column;z-index:10}.side-heading{display:flex;align-items:center;justify-content:space-between}.eyebrow{font-size:9px;letter-spacing:2px;font-weight:600;color:var(--accent)}h1{font-family:'Songti SC','STSong',serif;font-size:29px;font-weight:600;line-height:1.45;letter-spacing:2px;margin:12px 0 6px}.intro{font-size:10px;color:var(--muted);margin:0 0 18px}.search{display:flex;align-items:center;background:#edf0e8;border-radius:8px;padding:10px;gap:7px}.search input{width:100%;border:0;background:none;font-size:11px;outline:none;color:var(--ink);min-width:0}.search span{font-size:21px;line-height:14px}.search kbd{color:#a0a99d;font-size:10px}.filters{display:flex;flex-wrap:wrap;gap:5px;margin:13px 0}.filters button{font-size:10px;padding:5px 8px;border-radius:5px}.filters button.active{background:var(--ink);color:white}.list-heading{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin:4px 0 10px}#place-list{overflow-y:auto;flex:1;min-height:0;scrollbar-width:thin;scrollbar-color:#ced7c9 transparent}.place{display:flex;width:100%;padding:11px 8px;border-radius:9px;text-align:left;align-items:center;gap:11px;margin:2px 0}.place.selected{background:#e4ede1}.place .num{font:italic 19px Georgia;color:#8a9a89;width:24px}.place.selected .num{color:var(--accent)}.place .name{font-size:12px;font-weight:600}.place .sub{display:block;font-size:9px;color:var(--muted);margin-top:4px}.place .arrow{margin-left:auto;font-size:13px;color:#889b87}.place.explored .num:after{content:'·';color:var(--accent)}.sidebar-foot{border-top:1px solid var(--line);padding:15px 0;display:flex;gap:7px;align-items:center;font-size:9px;white-space:nowrap}.sidebar-foot button{margin-left:auto;font-size:10px;color:var(--accent)}#view-label{position:absolute;top:111px;left:352px;pointer-events:none;text-shadow:0 1px 8px #f2f5e8}#view-label h2{font-family:'Songti SC','STSong',serif;font-size:27px;margin:8px 0 3px;letter-spacing:2px}#view-label p{font-size:10px;margin:0;color:#637565}#compass{position:absolute;right:31px;top:112px;display:flex;flex-direction:column;align-items:center;gap:2px;pointer-events:none}#compass span{font:13px Georgia}#compass-arrow{font-size:39px}#compass small{font-size:8px;color:var(--muted)}#detail{position:absolute;right:24px;bottom:83px;width:294px;background:#fbfcf8f7;border:1px solid white;border-radius:16px;box-shadow:var(--shadow);z-index:12;overflow:hidden}.detail-image{height:151px;position:relative;background:#d5ded2}.detail-image img{width:100%;height:100%;object-fit:cover}.detail-image span{position:absolute;bottom:10px;left:12px;font-size:8px;color:white;border-radius:4px;background:#173f37cf;padding:5px 7px}.close{position:absolute;right:10px;top:9px;background:#f8faf2e8;border-radius:50%;font-size:22px;width:26px;height:26px;z-index:1}.detail-body{padding:19px 20px 8px}.detail-body h2{font-size:21px;margin:8px 0 5px}#detail-title{font-size:10px;color:var(--accent);margin:0}#detail-desc{font-size:11px;color:#778379;margin:12px 0 16px}.detail-buttons{display:flex;gap:7px}.detail-buttons button{flex:1;border:1px solid var(--line);padding:11px 4px;border-radius:8px;font-size:11px}.primary{background:var(--ink)!important;color:white!important;border:0!important;border-radius:8px;padding:12px 20px}.primary:hover{background:var(--accent)!important}.primary span{margin-left:15px}.route-buttons{display:flex;align-items:center;justify-content:space-between;margin-top:12px;font-size:10px}.route-buttons button{padding:9px 0;font-size:10px}.route-buttons span{font:11px Georgia;color:#8e9c8b}#room-options{display:flex;gap:4px;margin:10px 0}#room-options button{font-size:10px;padding:7px;background:#e9eee4;border-radius:5px}#room-options .active{background:var(--accent);color:white}#bottom-bar{position:absolute;bottom:22px;left:352px;right:24px;display:flex;justify-content:space-between;align-items:center;z-index:11}.view-controls{display:flex;background:#fbfcf6f0;border:1px solid white;border-radius:10px;padding:4px;box-shadow:var(--shadow);gap:2px}.view-controls button{font-size:11px;padding:9px 11px;border-radius:7px}.view-controls button.active{background:#e2eadd}.model-note{font-size:9px;color:#647960}.floating{position:absolute;left:24px;top:106px;background:#fbfcf8f2;border:1px solid #d5decf;padding:11px 15px;border-radius:9px;z-index:15;box-shadow:var(--shadow);font-size:12px}#walk-hud{pointer-events:none;position:absolute;inset:0}.reticle{position:absolute;left:50%;top:50%;color:#fff9;font-size:22px;transform:translate(-50%,-50%);text-shadow:0 1px 3px #0006}.walk-tip{position:absolute;bottom:89px;left:50%;transform:translateX(-50%);text-align:center;border-radius:10px;background:#173f37d9;color:white;padding:10px 16px;font-size:11px;white-space:nowrap}.walk-tip b{display:block;font-weight:500}.walk-tip span{font-size:9px;display:block;margin-top:4px;color:#d9e3d5}#exit-room{top:165px;pointer-events:auto}.dpad{position:absolute;bottom:150px;left:25px;display:grid;grid-template-columns:42px 42px 42px;gap:4px;pointer-events:auto}.dpad button{height:42px;border-radius:8px;background:#f9fcf3c9;border:1px solid white;font-size:20px;touch-action:none}.dpad button:first-child{grid-column:2}.dpad button:nth-child(2){grid-row:2;grid-column:1}.dpad button:nth-child(3){grid-row:2;grid-column:2}.dpad button:nth-child(4){grid-row:2;grid-column:3}body.walking #directory{display:none}body.walking #view-label{left:185px}body.walking #bottom-bar{left:24px}body.walking #detail{width:267px}body.walking .detail-image{height:110px}body.walking #expand{display:block}body.directory-hidden #view-label{left:185px}body.directory-hidden #bottom-bar{left:24px}#toast{position:absolute;left:50%;bottom:23px;transform:translate(-50%,20px);background:var(--ink);color:white;padding:12px 20px;border-radius:9px;font-size:12px;z-index:50;opacity:0;transition:.25s;pointer-events:none}#toast.show{opacity:1;transform:translate(-50%,0)}#loading{position:fixed;inset:0;background:var(--paper);z-index:100;display:flex;flex-direction:column;align-items:center;justify-content:center}#loading h2{font-family:serif;font-size:27px;font-weight:500}#loading p{color:var(--muted);font-size:12px}.loading-mark{font-family:serif;border:1px solid var(--ink);border-radius:50%;width:66px;height:66px;display:grid;place-items:center;font-size:33px}.loading-line{height:2px;width:130px;background:#d9e1d2;margin-top:18px;overflow:hidden}.loading-line:after{content:'';display:block;background:var(--accent);width:40%;height:2px;animation:load 1s ease infinite}@keyframes load{to{transform:translateX(260%)}}dialog{border:1px solid white;border-radius:20px;background:var(--paper);padding:27px;color:var(--ink);max-width:900px;width:85vw;max-height:88vh;box-shadow:0 20px 100px #0004}dialog::backdrop{background:#112d28ad;backdrop-filter:blur(6px)}.dialog-head{display:flex;justify-content:space-between;align-items:start;margin-bottom:18px}.dialog-head h2{font-size:24px;margin:7px 0}.dialog-head button{font-size:27px;border-radius:50%;width:35px;height:35px}.gallery-stage{display:flex;align-items:center;gap:10px;background:#e1e7dd;border-radius:10px;min-height:200px}.gallery-stage img{display:block;width:calc(100% - 80px);height:50vh;object-fit:contain}.gallery-stage button{width:30px;font-size:35px}.gallery-meta{display:flex;justify-content:space-between;font-size:11px;padding:10px 0;color:var(--muted)}#thumbnails{display:flex;gap:7px;overflow-x:auto}#thumbnails button{padding:2px;border:2px solid transparent;border-radius:6px}#thumbnails button.active{border-color:var(--accent)}#thumbnails img{width:65px;height:45px;object-fit:cover;border-radius:3px;display:block}.muted{font-size:10px;color:var(--muted)}.help-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.help-grid b{font-size:15px}.help-grid p,.assumption p{font-size:12px;color:#657561;line-height:1.8}.assumption{background:#e7ecdf;padding:18px;border-radius:12px;margin:10px 0 20px}.assumption b{font-size:12px}#help-dialog{max-width:660px}.empty{font-size:12px;color:var(--muted);padding:25px 8px}@media(max-width:1100px){.model-note{display:none}.header-note{display:none}#directory{width:260px}#view-label{left:310px}#bottom-bar{left:310px}#detail{width:260px}.detail-image{height:130px}}@media(max-width:760px){header{height:68px;padding:0 14px}.brand-mark{width:35px;height:35px;font-size:20px}.brand b{font-size:12px;letter-spacing:1px}.brand small{font-size:8px}.brand{gap:7px}.mode-switch button{padding:8px 10px;font-size:10px}.header-actions{gap:6px}.live-dot,#fullscreen{display:none}#directory{top:83px;left:12px;width:260px;bottom:78px;padding:18px 16px 0;background:#fbfcf7fa}#directory h1{font-size:23px;margin-top:8px}#view-label{top:88px;left:24px!important}#view-label h2{font-size:22px}body:not(.directory-hidden):not(.walking) #view-label{display:none}#compass{top:89px;right:15px}#compass-arrow{font-size:27px}#bottom-bar{left:12px!important;right:12px;bottom:15px}.view-controls{width:100%;justify-content:center}.view-controls button{font-size:10px;padding:10px 13px}#detail{right:12px;bottom:76px;width:240px}.detail-image{height:112px}.detail-body{padding:13px 16px 6px}.detail-body h2{font-size:18px}#detail-desc{font-size:10px;margin:8px 0}#view-subtitle{display:none}.floating{top:148px;left:14px;font-size:10px;padding:9px}.pin{font-size:9px;gap:4px;padding:4px}.pin span{width:20px;height:20px;font-size:10px}body.walking #detail{display:none}body.walking #view-label{left:24px!important}#exit-room{top:193px;left:14px}.walk-tip{bottom:80px;font-size:10px;padding:8px 11px}.walk-tip span{font-size:8px}.dpad{left:auto;right:16px;bottom:140px}.help-grid{grid-template-columns:1fr;gap:5px}dialog{padding:20px;width:94vw}.gallery-stage img{height:38vh}.intro{margin-bottom:10px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
[hidden]{display:none!important}
#floor-tools{position:absolute;right:24px;top:105px;z-index:13;display:flex;align-items:center;gap:8px}.floor-switch{display:flex;gap:3px;padding:4px;background:#fbfcf8ef;border:1px solid white;border-radius:10px;box-shadow:var(--shadow)}.floor-switch button{padding:9px 16px;font-size:11px;border-radius:7px}.floor-switch .active{background:var(--ink);color:white}#source-plan{font-size:10px;background:#fbfcf8ef;padding:13px;border-radius:9px}#compass{top:166px}#plan-source{font-size:9px;color:var(--accent);padding:8px 0;border-top:1px solid var(--line);line-height:1.65;margin:0 0 10px}#plan-dialog{max-width:1500px;width:94vw}#plan-image{width:100%;display:block;margin:18px 0}.plan-tabs{display:flex;gap:8px}.plan-tabs button{padding:9px 14px;border-radius:7px;background:#e4eadd;font-size:12px}.plan-tabs .active{background:var(--ink);color:white}.brand b{letter-spacing:1px}.detail-body h2{font-size:19px}#view-label h2{font-size:24px}#detail-desc{margin:8px 0}.detail-image:has(img[hidden]){height:40px;background:#dde6d6}.detail-image:has(img[hidden]) span{bottom:10px}
@media(max-width:1000px){#floor-tools{top:98px;gap:4px}#view-label{top:160px}#view-label h2{font-size:21px}#source-plan{font-size:9px;padding:12px 8px}.floor-switch button{padding:8px 11px}#compass{top:210px}.header-actions .header-note{display:none}}
@media(max-width:760px){#floor-tools{top:80px;left:14px;right:auto}#view-label{top:135px}#compass{top:140px}#expand{top:203px}#directory{top:129px}#exit-room{top:246px}body.walking #view-label{top:91px}body.walking #expand{top:157px}body.walking #exit-room{top:202px}body.walking #compass{top:85px}.brand b{font-size:12px;letter-spacing:0}.brand small{letter-spacing:1px}.header-actions{gap:4px}.mode-switch button{padding:8px 9px}}
@media(max-width:480px){header{height:99px;align-items:flex-start;padding-top:12px}.brand b{font-size:14px}.brand small{font-size:9px}.mode-switch{position:absolute;bottom:7px;left:14px}.header-actions{position:absolute;right:14px;top:16px}.mode-switch button{padding:6px 18px}#floor-tools{top:112px}#view-label{top:165px}#compass{top:175px}#directory{top:160px}#expand{top:226px}body.walking #view-label{top:118px}body.walking #compass{top:115px}body.walking #expand{top:181px}body.walking #exit-room{top:225px}.view-controls button{padding:9px 9px}#detail{max-height:calc(100vh - 250px);overflow:auto}}

.site-return{color:var(--ink);font-size:11px;text-decoration:none;white-space:nowrap}.site-return:hover{text-decoration:underline}@media(max-width:760px){.site-return{font-size:9px}.header-actions{gap:4px}}

#auto-rotate{min-width:88px;white-space:nowrap}@media(max-width:480px){.view-controls button{padding:9px 7px}#auto-rotate{min-width:78px}}

#route-dialog{max-width:760px}#route-context,.route-intro{font-size:12px;color:var(--muted);line-height:1.7}#route-stations{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:16px 0 22px}.route-station{display:grid;grid-template-columns:32px 1fr;gap:3px 10px;align-items:center;text-align:left;padding:12px;background:#e9eee3;border:1px solid transparent;border-radius:9px}.route-station>span{grid-row:span 2;font:italic 19px Georgia;color:var(--accent)}.route-station strong{font-size:12px;font-weight:600}.route-station small{font-size:10px;color:var(--muted)}.route-station.active{border-color:var(--accent);background:#dde8d6}.route-station:hover{background:#dce6d4}.scene-pin{z-index:3}@media(max-width:520px){#route-stations{grid-template-columns:1fr}.view-controls{flex-wrap:wrap}.view-controls button{flex-shrink:0}}