*{box-sizing:border-box}html,body{margin:0;height:100%;font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;color:#13273a;background:#e6edf1}body{display:grid;grid-template-rows:76px minmax(0,1fr) 40px}header{display:flex;align-items:center;justify-content:space-between;padding:0 30px;background:#13273a;color:#fff}.brand{display:flex;align-items:center;gap:13px;color:inherit;text-decoration:none;font-size:18px;letter-spacing:.02em}.brand strong{font-weight:400;color:#b6c4ce}.mark{display:grid;place-items:center;width:36px;height:36px;border:1px solid #658397;border-radius:9px;font-size:21px;color:#86e4c8}.stage{font-size:14px;border:1px solid #526777;padding:8px 12px;border-radius:6px;color:#dbe5ec}main{position:relative;overflow:hidden;min-height:430px}#viewport{height:100%;width:100%}canvas{display:block;width:100%;height:100%;touch-action:none}.panel{position:absolute;left:26px;top:26px;width:310px;padding:25px;background:rgba(255,255,255,.95);border:1px solid #d5dee5;border-radius:12px;box-shadow:0 12px 36px #1a324017}.eyebrow{font-size:12px;letter-spacing:.14em;color:#536b7f;margin:0 0 12px}h1{font-size:26px;line-height:1.4;letter-spacing:-.03em;margin:0 0 8px}.address{font-size:14px;color:#536b7f;line-height:1.7;margin:0 0 24px}label{display:block;font-size:14px;margin-bottom:8px}select,button{font:inherit;font-size:14px}select{width:100%;padding:11px;border:1px solid #c9d4de;border-radius:6px;background:#fff;color:#13273a}.buttons{display:flex;gap:8px;margin-top:12px}button{flex:1;border:1px solid #c9d4de;border-radius:6px;padding:10px 8px;background:#f4f7f9;color:#13273a;cursor:pointer}button:hover{background:#e8f1f5}button:disabled,select:disabled{opacity:.5;cursor:wait}button:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid #399d83;outline-offset:3px}.detail{font-size:14px;line-height:1.7;margin:20px 0 0}.note{font-size:14px;line-height:1.8;color:#62778a;border-top:1px solid #e0e7ed;padding-top:14px;margin:14px 0 0}.instructions{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);font-size:14px;white-space:nowrap;background:#ffffffde;border:1px solid #d3dee7;border-radius:8px;padding:11px 18px}.status{position:absolute;top:28px;right:28px;font-size:14px;background:#ffffffd9;border-radius:6px;padding:9px 12px}footer{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:0 24px;font-size:12px;background:#f7f9fa;color:#526879}footer a{color:inherit;text-underline-offset:3px}@media(max-width:720px){body{grid-template-rows:64px minmax(0,1fr) 46px}header{padding:0 16px}.brand{font-size:16px}.stage{font-size:12px}.panel{left:14px;top:auto;bottom:14px;width:calc(100% - 28px);padding:16px}.eyebrow,h1,.address,.note{display:none}label{margin:0 0 7px}.buttons{margin-top:8px}.detail{margin-top:10px;font-size:13px}.instructions{display:none}.status{right:14px;top:14px;font-size:13px}footer{padding:0 14px;font-size:12px}.panel select{font-size:14px}main{min-height:470px}}
@media(min-width:721px){#viewport{margin-left:336px;width:calc(100% - 336px)}.instructions{left:calc(50% + 168px)}}
@media(max-width:720px){#viewport{height:calc(100% - 220px)}}

.sample{width:100%;margin-top:12px;background:#246b5c;color:#fff;border-color:#246b5c}.sample:hover{background:#1e5a4e}
@media(max-width:720px){.sample{margin-top:8px;padding:8px}#viewport{height:calc(100% - 262px)}}

.facades{display:flex;gap:8px}.facades .sample{width:auto;flex:1}

.view-label{margin-top:14px}.model-download{display:grid;place-items:center;flex:1;border:1px solid #c9d4de;border-radius:6px;color:#13273a;text-decoration:none;background:#f4f7f9;font-size:14px;padding:10px 8px}.model-download:hover{background:#e8f1f5}#lighting[aria-pressed=true]{background:#38546b;border-color:#38546b;color:#fff}
@media(max-width:720px){.view-label{margin-top:9px}#viewport{height:calc(100% - 338px)}.detail{line-height:1.5}main{min-height:570px}}

#walk-hud[hidden]{display:none}#walk-hud{position:absolute;inset:0;pointer-events:none;color:#fff}.walk-toolbar{position:absolute;left:18px;right:18px;top:18px;display:flex;gap:8px;align-items:center;background:#13273ae8;padding:10px;border-radius:10px;pointer-events:auto}.walk-toolbar strong{font-size:13px;white-space:nowrap;padding:0 6px}.walk-toolbar select{width:auto;min-width:140px;flex:1;font-size:12px;padding:8px}.walk-toolbar button{flex:none;font-size:12px;padding:8px;white-space:nowrap}.walk-hint{position:absolute;left:22px;top:72px;font-size:11px;background:#13273acc;padding:7px 10px;border-radius:5px}.walk-pad{position:absolute;left:24px;bottom:35px;display:grid;grid-template-columns:repeat(3,45px);gap:5px;pointer-events:auto}.walk-pad button{height:44px;font-size:20px;background:#ffffffde;touch-action:none;user-select:none}.walk-pad button[data-walk=forward]{grid-column:2}.walk-pad button[data-walk=left]{grid-column:1}.walk-pad button:active{background:#76cbb0}#walk-position{position:absolute;bottom:19px;right:22px;font-size:11px;background:#13273abb;padding:7px 10px;border-radius:5px}.crosshair{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);color:#ffffffa0;font-size:17px;line-height:1}body.walking .panel,body.walking .instructions,body.walking .status{display:none}body.walking #viewport{margin-left:0;width:100%;height:100%}body.walking main{min-height:0}@media(max-width:720px){#viewport{height:calc(100% - 382px)}.walk-toolbar{left:9px;right:9px;top:10px;gap:5px;padding:8px}.walk-toolbar strong{display:none}.walk-toolbar select{min-width:105px;padding:7px}.walk-toolbar button{padding:7px 5px;font-size:11px}.walk-hint{left:10px;right:10px;top:56px;font-size:10px}.walk-pad{left:14px;bottom:40px}#walk-position{right:12px;bottom:14px;font-size:10px}.panel .sample{padding:9px}}

#preview-size{position:absolute;left:352px;top:18px;z-index:3;flex:none;padding:8px 12px;background:#fffffff0;box-shadow:0 3px 12px #13273a18;font-size:12px}body.preview-expanded .panel{display:none}body.preview-expanded #viewport{margin-left:0;width:100%;height:100%}body.preview-expanded #preview-size{left:18px}body.preview-expanded .instructions{left:50%}body.walking #preview-size{display:none}@media(max-width:720px){#preview-size{left:14px;top:14px}body.preview-expanded #preview-size{left:14px}}

.walk-map{position:absolute;right:18px;bottom:56px;width:230px;background:#f6f5eef2;color:#2c4537;border:1px solid #fff9;border-radius:9px;box-shadow:0 4px 18px #102a2b25;overflow:hidden}.walk-map[hidden]{display:none}.walk-map>span{display:block;font-size:11px;padding:7px 10px;background:#e4ebdf}.walk-map canvas{width:230px;height:290px;touch-action:auto}@media(max-width:720px){.walk-map{width:156px;right:12px;bottom:55px}.walk-map canvas{width:156px;height:197px}.walk-map>span{font-size:10px;padding:5px 8px}}

#indoor-hud[hidden]{display:none}#indoor-hud{position:absolute;inset:0;pointer-events:none;color:#fff}#indoor-position{position:absolute;bottom:19px;right:22px;font-size:11px;background:#13273abb;padding:7px 10px;border-radius:5px}.walk-pad button[data-indoor=forward]{grid-column:2}.walk-pad button[data-indoor=left]{grid-column:1}@media(min-width:721px){.panel{max-height:calc(100% - 52px);overflow:auto}}@media(max-width:720px){#indoor-position{right:12px;bottom:14px;font-size:10px}}

.indoor-map{position:absolute;right:18px;bottom:56px;width:180px;overflow:hidden;background:#f6f5eef2;color:#3c5c50;border:1px solid #fff9;border-radius:8px;box-shadow:0 4px 18px #13273a25}.indoor-map[hidden]{display:none}.indoor-map>span{display:block;font-size:10px;padding:6px 8px;background:#e4ebdf}.indoor-map canvas{width:180px;height:250px}@media(max-width:720px){.indoor-map{width:130px;right:12px}.indoor-map canvas{width:130px;height:181px}}

.quality-setting{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:14px 0;color:#52635c;font-size:13px}.quality-setting select{width:130px;max-width:55%;margin:0;padding:8px 10px;border:1px solid #d1dbd3;border-radius:6px;background:#fff;color:#344e3d;font:inherit}.quality-setting select:focus-visible{outline:3px solid #6fa788;outline-offset:2px}

.library-entry-action{position:absolute;left:22px;top:117px;pointer-events:auto;background:#f7faf5;color:#285647;border:1px solid #b6d0bd;padding:10px 16px;box-shadow:0 3px 14px #13273a25}.library-entry-action[hidden]{display:none}@media(max-width:720px){.library-entry-action{left:10px;top:105px;font-size:12px;padding:10px 12px}}

#walk-hud .crosshair{display:none}#walk-performance{position:absolute;left:22px;bottom:18px;font-size:11px;background:#13273abb;padding:7px 10px;border-radius:5px}.walk-toolbar{flex-wrap:wrap}.walk-toolbar select{min-width:120px}#walk-view-toggle{color:#285647;background:#f4faf6}.walk-hint{max-width:calc(100% - 44px)}@media(max-width:720px){.walk-toolbar select{flex-basis:100%;width:100%}.walk-hint{top:100px;max-width:none;margin-right:0}.library-entry-action{top:153px}#walk-performance{left:12px;bottom:14px;font-size:10px}}

#walk-outfit{flex:.75;min-width:125px}#walk-poi{min-width:135px}
@media(max-width:900px){#walk-hud .walk-toolbar strong{display:none}}
@media(max-width:720px){#walk-hud .walk-toolbar{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}#walk-poi,#walk-outfit{grid-column:span 2;min-width:0;width:100%;font-size:11px}#walk-hud .walk-toolbar button{width:100%;padding:8px 3px}.walk-hint{top:100px}.library-entry-action{top:153px}}

/* The lighting control remains available in model, outdoor and indoor modes. */
header{gap:12px}header #lighting{flex:0 0 auto;padding:9px 12px;white-space:nowrap;font-size:13px}header #lighting[aria-pressed=true]{background:#38546b;border-color:#6d869c;color:#fff}@media(max-width:960px){header .stage{display:none}}@media(max-width:720px){header #lighting{margin-left:auto;padding:8px 10px;font-size:12px}}

.background-setting{display:flex;align-items:center;gap:7px;margin:14px 0;font-size:13px;color:#52635c}.background-setting input{accent-color:#344e3d}