*{box-sizing:border-box}html,body{margin:0;background:#000;color:#e9e9e6;font-family:var(--font-interface);height:100%;overflow:hidden}button,a,select,input{-webkit-tap-highlight-color:transparent}button,a{color:inherit}button{cursor:pointer;font:inherit}a{text-decoration:none}button{background:none;border:0}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid white;outline-offset:5px}button:hover,a:hover{color:#fff}button[disabled]{opacity:.4;cursor:default}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.skip{position:absolute;top:-100px;left:20px;z-index:20;background:white;color:black;padding:14px}.skip:focus{top:10px}#scene,#fallback{position:absolute;inset:0;width:100%;height:100%}#scene canvas{display:block;width:100%;height:100%;touch-action:none}#fallback{object-fit:contain;opacity:.75;pointer-events:none}header{position:absolute;inset:0 0 auto;display:flex;align-items:center;gap:28px;height:92px;padding:0 38px;z-index:3;background:linear-gradient(#000c,#0000)}.brand{font-size:39px;letter-spacing:-2px}.edition,.eyebrow,.caption,.footnote,.tools,nav button,.quiet{font:10px/1.6 var(--font-interface);letter-spacing:1.4px}.edition i{font-style:normal;color:#686868;margin-left:10px}.quiet{margin-left:auto;font-size:11px;letter-spacing:.3px}.quiet span{padding-left:16px}.intro{position:absolute;left:38px;top:126px;pointer-events:none;transition:opacity .5s}.eyebrow{color:#999;font-size:9px}.intro h1{font-size:clamp(34px,3.8vw,58px);line-height:1.03;font-weight:400;letter-spacing:-2.5px;margin:14px 0}.intro p{font-size:12px;line-height:1.7;color:#888}.focused .intro{opacity:0}.tools{position:absolute;right:30px;top:114px;display:flex;flex-direction:column;gap:2px;z-index:4;width:132px;letter-spacing:0}.tools button{padding:12px 10px;text-align:left;background:#0009;border-bottom:1px solid #ffffff20;display:flex;justify-content:space-between;font-size:11px;backdrop-filter:blur(10px)}.tools button[aria-pressed=true]{background:#e4e4e4;color:#000}.caption{position:absolute;bottom:129px;left:38px;right:38px;display:flex;justify-content:space-between;color:#969696;font-size:9px;pointer-events:none}footer{position:absolute;bottom:0;width:100%;padding:0 38px max(14px,env(safe-area-inset-bottom));background:linear-gradient(#0000,#000 25%);z-index:5}nav{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid #333;border-bottom:1px solid #222}nav button{padding:20px 12px;text-align:left;letter-spacing:0;font-size:12px;color:#aaa;position:relative;white-space:nowrap}nav button span{font-size:9px;color:#666;margin-right:14px}nav button:hover,nav button[aria-pressed=true]{background:#ffffff0d;color:#fff}nav button[aria-pressed=true]:before{content:'';position:absolute;top:-1px;left:0;right:0;height:2px;background:#fff}.footnote{display:flex;justify-content:space-between;align-items:center;margin-top:12px;color:#5f5f5f;font-size:8px;letter-spacing:.6px}.footnote button{font-size:10px;color:#aaa}.hotspot{position:absolute;left:0;top:0;pointer-events:auto;display:flex;gap:12px;align-items:center;white-space:nowrap;font:10px var(--font-interface);letter-spacing:1.4px;padding:12px;transform:translate(-50%,-50%);text-shadow:0 1px 8px #000,0 1px 3px #000;z-index:2}.hotspot:before{content:'';width:8px;height:8px;border:1px solid #ddd;border-radius:50%;box-shadow:0 0 0 5px #ffffff12;flex:none}.hotspot:hover:before,.hotspot[aria-pressed=true]:before{background:#fff;box-shadow:0 0 0 8px #ffffff18}.hotspot span{background:#0009;padding:6px 8px;border-bottom:1px solid #ffffff40}.room-panel{position:absolute;left:38px;bottom:160px;width:330px;padding:24px;background:#080808e8;border:1px solid #353535;backdrop-filter:blur(16px);z-index:4}.room-panel-header{display:flex;justify-content:space-between;align-items:center}.room-panel button{font-size:24px}.room-panel h2{font-weight:400;font-size:30px;letter-spacing:-1px;margin:15px 0}.room-panel p{color:#aaa;font-size:13px;line-height:1.7}.visit{font:12px var(--font-interface);border-top:1px solid #333;display:flex;justify-content:space-between;padding-top:18px;margin-top:24px}.loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;background:#000;z-index:8;font:13px var(--font-interface)}.loading .muted{font-size:8px;letter-spacing:3px}.loader{width:34px;height:34px;border:1px solid #333;border-top-color:white;border-radius:50%;animation:spin 1.4s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}dialog{background:#0c0c0c;color:#eee;border:1px solid #444;padding:30px;width:min(480px,calc(100% - 32px));max-height:85dvh;overflow:auto}dialog::backdrop{background:#000b;backdrop-filter:blur(8px)}.dialog-head{display:flex;align-items:start;justify-content:space-between;gap:24px;margin-bottom:26px}.dialog-head h2{margin:0;font-size:29px;font-weight:400;letter-spacing:-1px}.dialog-head button{font-size:24px}dialog label{display:flex;align-items:center;justify-content:space-between;margin:24px 0;font-size:13px;gap:20px}dialog select{padding:9px;background:#151515;color:white;border:1px solid #444;font-size:16px}dialog p{font-size:13px;line-height:1.8;color:#aaa}input{accent-color:#ddd}dialog .check{justify-content:flex-start;gap:12px}dialog ol{padding-left:23px}dialog li{padding:8px 0;font-size:13px;line-height:1.5;color:#777}.done{color:#ddd}li.done:after{content:' ✓';color:#999}.muted{color:#777}.noscript{position:absolute;inset:40% 10%;z-index:10}body.still .intro{display:none}
@media(max-width:800px){header{height:74px;padding:0 20px;gap:15px}.brand{font-size:34px}.edition{font-size:8px;letter-spacing:.6px}.edition i{display:none}.quiet{font-size:0}.quiet span{font-size:23px}.intro{top:94px;left:20px}.intro h1{font-size:34px;letter-spacing:-1.5px}.intro p{display:none}.intro .eyebrow{font-size:7px;letter-spacing:.5px}.tools{right:14px;top:92px;width:108px}.tools button{font-size:10px;padding:10px}.caption{left:20px;right:20px;bottom:156px;font-size:7px;letter-spacing:.7px}#hint{max-width:135px;text-align:right}footer{padding-inline:14px}nav{grid-template-columns:repeat(5,max-content);overflow-x:auto}nav button{padding:19px 15px;font-size:11px}nav button span{margin-right:8px}.footnote{align-items:start;gap:18px;line-height:1.6;min-height:29px;font-size:7px}.footnote>span{max-width:195px}.footnote button{white-space:nowrap;font-size:9px}.hotspot{font-size:8px;letter-spacing:.5px;gap:7px}.hotspot span{padding:5px}.room-panel{left:14px;right:14px;bottom:145px;width:auto;padding:16px;max-width:370px}.room-panel h2{font-size:24px;margin:6px 0}.room-panel p{font-size:12px;margin:8px 0}.room-panel .visit{margin-top:12px;padding-top:12px}.focused .hotspot:not([aria-pressed=true]){visibility:hidden}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}@media(max-height:550px){.intro{display:none}.room-panel{bottom:110px;max-height:55vh;overflow:auto}.caption{bottom:100px}.tools{top:76px}.tools button{padding:7px}header{height:66px}nav button{padding:12px}.footnote{margin-top:7px}}

/* Keep mobile overlays within the visible viewport and respect safe areas. */
body{height:100dvh}header{padding-top:env(safe-area-inset-top)}nav{overscroll-behavior-x:contain;scrollbar-width:thin;scrollbar-color:#555 #000}button{touch-action:manipulation}.hotspot{min-height:44px}.room-panel{max-height:calc(100dvh - 260px);overflow-y:auto}
@media(max-width:800px){.tools button{min-height:44px}.room-panel{max-height:calc(100dvh - 260px)}.caption{bottom:calc(140px + env(safe-area-inset-bottom))}}

/* Navigation remains available outside the 3D canvas. */
:root{--footer-height:120px}
.research-shortcut{margin-left:auto;display:flex;align-items:center;gap:16px;min-height:44px;padding:10px 15px;border:1px solid #555;background:#101010d9;font:12px var(--font-interface);white-space:nowrap}
.quiet{margin-left:0;min-width:44px;min-height:44px}
.room-location{font:9px/1.5 var(--font-interface)!important;letter-spacing:1px;color:#999!important}
.room-paging{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid #292929;margin-top:18px;padding-top:7px}
.room-paging button{font:11px var(--font-interface);min-height:44px;padding:5px 0}
.room-paging span{font:10px var(--font-interface);color:#888}
.room-panel{bottom:calc(var(--footer-height) + 40px);max-height:calc(100dvh - var(--footer-height) - 150px)}
.room-panel>div:first-child button,.dialog-head button{min-width:44px;min-height:44px}
.caption{bottom:calc(var(--footer-height) + 17px)}
.visit{min-height:44px}
.destination-heading{font:8px var(--font-interface);letter-spacing:1.4px;color:#999;margin:20px 0 8px}
.destinations{border-top:1px solid #303030}
.destination{position:relative;display:flex;flex-direction:column;justify-content:center;gap:5px;min-height:58px;border-bottom:1px solid #292929;padding:11px 24px 11px 0}
.destination-title{font-size:12px;color:#eee}.destination-note{font-size:10px;line-height:1.5;color:#999}
.destination-arrow{position:absolute;right:0;top:14px;font-size:15px;color:#bbb}
.destination:hover .destination-title{text-decoration:underline;text-underline-offset:4px}
.room-panel .destination-hint{font:9px/1.6 var(--font-interface);color:#858585;margin:12px 0}
.room-paging{position:sticky;bottom:-24px;background:#080808;z-index:1}
@media(max-width:800px){.room-paging{bottom:-16px}.destination{min-height:54px}.destination-heading{margin-top:14px}}
@media(max-height:550px){.room-paging{bottom:-12px}.destination-note{display:none}.destination{min-height:44px}}
@media(max-width:1050px){.edition i{display:none}}
@media(max-width:800px){
 header{gap:12px}.edition{display:none}.research-shortcut{font-size:11px;padding:9px 12px;gap:10px}.quiet span{padding-left:0}
 .tools{top:calc(78px + env(safe-area-inset-top));left:14px;right:14px;width:auto;display:grid;grid-template-columns:repeat(4,1fr);gap:4px}
 .tools button{gap:8px;white-space:nowrap;padding:10px 8px;font-size:10px}
 .intro{top:calc(140px + env(safe-area-inset-top))}.intro h1{font-size:28px;line-height:1.05;margin:8px 0}.intro .eyebrow{font-size:6px}
 .room-panel{bottom:calc(var(--footer-height) + 38px);max-height:calc(100dvh - var(--footer-height) - 190px)}
 .room-paging{margin-top:10px;padding-top:2px}.room-paging button{font-size:10px}
}
@media(max-height:550px){
 header{height:58px;padding-inline:max(18px,env(safe-area-inset-left))}.edition,.intro{display:none}
 .tools{top:64px;left:auto;right:max(14px,env(safe-area-inset-right));width:350px;display:grid;grid-template-columns:repeat(4,1fr);gap:4px}
 .tools button{min-height:44px;font-size:10px;padding:8px}
 .room-panel{top:65px;bottom:auto;left:max(14px,env(safe-area-inset-left));width:300px;max-height:calc(100dvh - var(--footer-height) - 85px);padding:12px}
 .room-panel h2{font-size:22px;margin:5px 0}.room-panel p{font-size:11px;margin:6px 0}.room-panel .visit{margin-top:8px;padding-top:12px}
 .caption{bottom:calc(var(--footer-height) + 7px)}
}
/* Research remains reachable while the 3D module loads or if it fails. */
header,footer{z-index:10}.loading{pointer-events:none}
nav .fallback-room{display:flex;align-items:center;min-height:56px;padding:18px 12px;font:12px var(--font-interface);white-space:nowrap;color:#ccc}
nav .fallback-room span{font-size:9px;color:#888;margin-right:12px}
nav .fallback-room:hover{background:#ffffff0d;color:white}
@media(max-width:800px){nav .fallback-room{padding:16px 15px;font-size:11px}}

/* Architectural system, batch 01. Explicit structures prevent flex leakage. */
:root{--arch-ink:#f4f4f4;--arch-muted:#aaa;--arch-line:#ffffff24;--arch-sans:var(--font-interface);--arch-mono:var(--font-interface)}
.ui-icon{display:inline-block;flex-shrink:0;width:16px;height:16px;vertical-align:middle}
.tools button>span,.visit>span,.research-shortcut>span,.back-research{display:inline-flex;align-items:center;gap:10px}
.room-panel{width:420px;padding:26px 28px;background:#090909e8;border:0;border-top:1px solid #ffffff50;border-bottom:1px solid var(--arch-line);box-shadow:0 16px 64px #0006;backdrop-filter:blur(18px)}
.room-panel-header{gap:20px}.room-panel-header .eyebrow{font-size:9px;letter-spacing:.12em}
.room-panel h2{font-family:var(--arch-sans);font-size:42px;line-height:1.05;letter-spacing:-.05em;margin:16px 0 12px;font-weight:400}
.room-panel .room-location{color:#b4b4b4!important;font-size:9px!important}
.room-panel #roomDescription{font-size:13px;line-height:1.65;color:#b8b8b8;margin:16px 0 22px}
.room-panel>.destinations{display:grid;grid-template-columns:minmax(0,1fr);width:100%;align-items:stretch;border-top:1px solid var(--arch-line)}
.room-panel .destination{display:grid;grid-template-columns:minmax(0,1fr) 18px;column-gap:16px;row-gap:5px;padding:15px 0;min-height:64px;width:100%;border-bottom:1px solid var(--arch-line)}
.destination-title{grid-column:1;grid-row:1;font-size:14px;line-height:1.35;overflow-wrap:anywhere}
.destination-note{grid-column:1;grid-row:2;font-size:11px;line-height:1.5;color:#aaa;overflow-wrap:anywhere}
.destination-arrow{position:static;grid-column:2;grid-row:1 / span 2;align-self:center;justify-self:end;line-height:1}
.room-panel .destination-hint{font-size:9px;color:#999;line-height:1.6;margin:14px 0}
.room-panel .visit{gap:18px;align-items:center;font-size:12px;line-height:1.5;margin-top:20px;padding-top:16px}
.room-panel>.room-paging{display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:center;bottom:-26px;background:#090909;padding-block:7px;margin-top:20px}
.room-paging button{display:inline-flex;gap:9px;align-items:center;font-size:10px;text-align:left}.room-paging #nextRoom{justify-content:flex-end}
.room-paging .ui-icon{width:13px;height:13px}
.research-shortcut{border:0;border-bottom:1px solid #ffffff55;background:transparent;padding-inline:0}
.tools button{backdrop-filter:blur(14px);border-color:var(--arch-line)}
@media(max-width:800px){
 .room-panel{left:14px;right:14px;width:auto;max-width:440px;padding:20px;max-height:calc(100dvh - var(--footer-height) - 184px)}
 .room-panel h2{font-size:34px;margin:10px 0}.room-panel #roomDescription{font-size:12px;line-height:1.6;margin:12px 0 18px}
 .room-panel .destination{min-height:62px;padding:13px 0}.destination-title{font-size:13px}.destination-note{font-size:11px}
 .room-panel>.room-paging{bottom:-20px;margin-top:14px}.room-panel .visit{margin-top:15px}
}
/* Reserve the same space for the controls and room details at every breakpoint. */
:root{
 --house-left:max(14px,env(safe-area-inset-left));
 --house-right:max(14px,env(safe-area-inset-right));
 --house-tools-top:calc(78px + env(safe-area-inset-top));
 --house-tools-height:44px;
}
@media(max-width:800px){
 header{height:calc(74px + env(safe-area-inset-top));padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}
 .tools{top:var(--house-tools-top);left:var(--house-left);right:var(--house-right);grid-template-columns:repeat(4,minmax(0,1fr))}
 .tools button{min-width:0;min-height:44px}
 .intro{left:max(20px,env(safe-area-inset-left));top:calc(var(--house-tools-top) + var(--house-tools-height) + 16px)}
 .room-panel{left:var(--house-left);right:var(--house-right);max-height:calc(100dvh - var(--footer-height) - 38px - var(--house-tools-top) - var(--house-tools-height) - 14px)}
 footer{padding-left:var(--house-left);padding-right:var(--house-right)}
 .caption{left:var(--house-left);right:var(--house-right)}
}
@media(max-width:480px){
 :root{--house-tools-height:92px}
 .tools{grid-template-columns:repeat(2,minmax(0,1fr))}
 /* This duplicate briefing link remains in the menu; leave space for the wordmark and Menu. */
 header .research-shortcut{display:none}
}
@media(max-height:550px){
 :root{
  --house-tools-top:calc(64px + env(safe-area-inset-top));
  --house-tools-height:92px;
  --house-tools-width:min(280px,calc((100vw - var(--house-left) - var(--house-right) - 16px)/2));
 }
 header{height:calc(58px + env(safe-area-inset-top));padding-left:max(18px,env(safe-area-inset-left));padding-right:max(18px,env(safe-area-inset-right))}
 .tools{top:var(--house-tools-top);left:auto;right:var(--house-right);width:var(--house-tools-width);grid-template-columns:repeat(2,minmax(0,1fr))}
 .tools button{min-width:0;min-height:44px}
 .room-panel{top:var(--house-tools-top);bottom:auto;left:var(--house-left);right:auto;width:min(340px,calc(100vw - var(--house-left) - var(--house-right) - var(--house-tools-width) - 16px));padding:16px;max-height:calc(100dvh - var(--footer-height) - var(--house-tools-top) - 20px)}
 .room-panel h2{font-size:28px}.room-panel>.room-paging{bottom:-16px}.room-panel .destination{min-height:44px}.destination-note{display:none}
 footer{padding-left:var(--house-left);padding-right:var(--house-right)}
 .caption{left:var(--house-left);right:var(--house-right)}
}
@media(max-width:480px) and (max-height:550px){
 .tools{left:var(--house-left);width:auto}
 .room-panel{top:calc(var(--house-tools-top) + var(--house-tools-height) + 14px);right:var(--house-right);width:auto;max-height:calc(100dvh - var(--footer-height) - var(--house-tools-top) - var(--house-tools-height) - 34px)}
}

/* Programmatic room/skip targets still need a visible keyboard focus indicator. */
#roomTitle:focus-visible,#rooms:focus-visible{outline:2px solid var(--fg,#fff);outline-offset:4px}

/* Keep the wordmark distinct; align the room text with the main Site. */
.brand{font-family:var(--font-interface)}
.intro h1,.room-panel h2{letter-spacing:-.03em}