:root{
  --paper:#efe9df; --ink:#2b2b28; --muted:#6f6a60;
  --accent:#4c6571; --warm:#c9844a; --line:rgba(60,55,48,.16);
  --panel:rgba(247,243,236,.92);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overflow:hidden;background:#d9d2c6;
  font-family:"Instrument Sans",system-ui,sans-serif;color:var(--ink)}
#scene{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none}

#loading{position:fixed;inset:0;display:flex;flex-direction:column;gap:14px;
  align-items:center;justify-content:center;background:#e7e0d4;z-index:50;
  transition:opacity .6s;font-size:15px;color:var(--muted)}
#loading.gone{opacity:0;pointer-events:none}
.spin{width:34px;height:34px;border-radius:50%;border:3px solid var(--line);
  border-top-color:var(--accent);animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

#topbar{position:fixed;top:0;left:0;right:0;z-index:20;display:flex;
  align-items:center;justify-content:space-between;padding:16px 20px;
  background:linear-gradient(#e7e0d4ee,#e7e0d400)}
.addr .street{font-family:"Instrument Serif",serif;font-size:26px;line-height:1}
.addr .town{font-size:12.5px;color:var(--muted);letter-spacing:.02em;margin-top:3px}
#tabs{display:flex;gap:4px;background:var(--panel);padding:4px;border-radius:11px;
  box-shadow:0 1px 0 #fff8 inset,0 2px 8px #0000000f;border:1px solid var(--line)}
#tabs button{font:inherit;font-size:13px;border:0;background:transparent;color:var(--muted);
  padding:7px 13px;border-radius:8px;cursor:pointer;transition:.18s}
#tabs button.on{background:var(--accent);color:#f4efe6}

#controls{position:fixed;left:20px;bottom:20px;z-index:20;display:flex;
  flex-direction:column;gap:9px;align-items:flex-start}
.ctl{display:flex;align-items:center;gap:9px;background:var(--panel);
  padding:8px 11px;border-radius:11px;border:1px solid var(--line);
  box-shadow:0 2px 8px #0000000f;backdrop-filter:blur(6px)}
.ctl button{font:inherit;font-size:13px;border:1px solid var(--line);background:#fff6;
  color:var(--ink);padding:7px 12px;border-radius:8px;cursor:pointer;transition:.15s}
.ctl button.on{background:var(--warm);color:#fff;border-color:transparent}
.ctl.sun label{font-size:11px;color:var(--muted);width:38px}
.ctl.sun input[type=range]{width:150px;accent-color:var(--warm)}
.ctl.sun span{font-size:12px;color:var(--ink);width:64px;text-align:right;font-variant-numeric:tabular-nums}

#realpanel{position:fixed;top:70px;right:20px;bottom:20px;width:340px;max-width:calc(100vw - 40px);
  z-index:20;overflow-y:auto;background:var(--panel);border:1px solid var(--line);
  border-radius:14px;padding:20px 22px;box-shadow:0 8px 30px #0000001a;
  backdrop-filter:blur(8px);transition:.3s}
#realpanel.hidden{opacity:0;pointer-events:none;transform:translateX(12px)}
#realpanel h2{font-family:"Instrument Serif",serif;font-weight:400;font-size:21px;margin:0 0 14px}
.rgroup h3{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);
  margin:16px 0 7px;border-bottom:1px solid var(--line);padding-bottom:5px}
.rgroup ul{margin:0;padding:0;list-style:none}
.rgroup li{font-size:13.5px;line-height:1.5;margin:8px 0;color:var(--ink)}
.rgroup li b{font-weight:600}
.rgroup li .n{color:var(--muted)}
.src{font-size:11px;color:var(--muted);margin-top:16px;line-height:1.4;font-style:italic}

#factcard{position:fixed;right:20px;bottom:20px;z-index:15;background:var(--panel);
  border:1px solid var(--line);border-radius:13px;padding:14px 17px;
  box-shadow:0 4px 16px #00000012;backdrop-filter:blur(6px);max-width:230px}
#factcard .row{display:flex;justify-content:space-between;gap:16px;font-size:13px;margin:5px 0}
#factcard .row .k{color:var(--muted)} #factcard .row .v{font-weight:600}
#factcard.hidden{display:none}

@media (max-width:640px){
  #realpanel{top:auto;right:12px;left:12px;bottom:12px;width:auto;max-height:52vh}
  #controls{left:12px;bottom:12px;right:12px}
  .ctl.sun input[type=range]{width:110px}
  .addr .street{font-size:22px}
  #factcard{max-width:170px;padding:11px 13px}
}