.xr-shell{position:relative;height:100%;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:14px}
.xr-shell.xr-fulltext{grid-template-columns:1fr}
.xr-shell.xr-fulltext .xr-side{display:none}
.xr-reader{display:flex;flex-direction:column;min-height:0}
.xr-topline{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.xr-page-btn{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.05);color:var(--text);font-size:22px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}
.xr-page-btn:hover{border-color:var(--cyan);color:var(--cyan)}
.xr-meta{min-width:0;flex:1;text-align:center}
.xr-meta b{display:block;color:#fff;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.xr-meta span{display:block;font-family:var(--mono);font-size:10px;color:var(--dim);letter-spacing:.8px;text-transform:uppercase;margin-top:3px}
.xr-page{position:relative;flex:1;min-height:430px;border-radius:14px;overflow:hidden;border:1px solid rgba(201,168,76,.34);box-shadow:inset 0 0 0 1px rgba(255,255,255,.035),0 18px 60px rgba(0,0,0,.44);filter:brightness(var(--xr-bright,1))}
.xr-page[data-ambience="night"]{background:radial-gradient(circle at 50% 20%,rgba(95,215,240,.05),transparent 34%),linear-gradient(180deg,#19151b,#0d0d13);color:#f5ead5}
.xr-page[data-ambience="paper"]{background:linear-gradient(180deg,#fff8e8,#efe2c2);color:#221810}
.xr-page[data-ambience="sepia"]{background:linear-gradient(180deg,#f0dfbc,#d8bf8f);color:#2a1c12}
.xr-viewer{position:absolute;inset:34px 44px 34px;z-index:1}
.xr-viewer iframe{background:transparent!important}
.xr-empty{position:absolute;inset:34px 44px;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;border:1px dashed rgba(201,168,76,.28);border-radius:12px;background:rgba(0,0,0,.12);padding:22px}
.xr-empty h3{margin:0 0 8px;font-size:21px;color:#fff}
.xr-empty p{margin:0 0 14px;color:var(--dim);font-size:13px;line-height:1.55;max-width:42ch}
.xr-side{display:flex;flex-direction:column;min-height:0;border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,rgba(18,16,27,.94),rgba(8,9,14,.96));overflow:hidden}
.xr-scene{min-height:120px;padding:14px;border-bottom:1px solid var(--line);background:linear-gradient(160deg,rgba(12,16,24,.25),rgba(11,7,18,.8)),url('view-treehouse-night.webp') center/cover;color:#fff}
.xr-brand{font-family:var(--mono);font-size:10px;letter-spacing:1.6px;text-transform:uppercase;color:var(--gold-bright);margin-bottom:48px}
.xr-scene h3{margin:0;font-size:20px;text-shadow:0 2px 14px rgba(0,0,0,.8)}
.xr-scene p{margin:5px 0 0;color:rgba(255,255,255,.8);font-size:12px;line-height:1.4}
.xr-side-body{display:flex;flex-direction:column;gap:10px;padding:12px;overflow:auto;min-height:0}
.xr-row{display:flex;gap:7px;align-items:center}
.xr-row .btn{flex:1;justify-content:center;padding:8px 10px;font-size:11px}
.xr-btn{border:1px solid var(--line);border-radius:10px;background:rgba(255,255,255,.05);color:var(--text);font-family:var(--mono);font-size:10.5px;letter-spacing:.7px;text-transform:uppercase;font-weight:700;padding:9px 10px;cursor:pointer}
.xr-btn:hover{border-color:var(--cyan);color:var(--cyan)}
.xr-btn.on{border-color:var(--cyan);color:var(--cyan);background:rgba(95,215,240,.1)}
.xr-field{display:flex;flex-direction:column;gap:5px}
.xr-field label{font-family:var(--mono);font-size:9.5px;letter-spacing:1.2px;text-transform:uppercase;color:var(--dim)}
.xr-field select,.xr-field input,.xr-field textarea{width:100%;box-sizing:border-box;border:1px solid var(--line);border-radius:9px;background:rgba(255,255,255,.05);color:var(--text);font-size:12px;padding:8px;outline:none}
.xr-field select:focus,.xr-field input:focus,.xr-field textarea:focus{border-color:var(--cyan)}
.xr-field textarea{min-height:88px;resize:vertical;line-height:1.45}
.xr-bookmarks{display:flex;flex-direction:column;gap:6px}
.xr-bmark{display:flex;align-items:center;gap:6px;text-align:left;border:1px solid var(--line);border-radius:9px;background:rgba(255,255,255,.04);color:var(--text);font-size:12px;padding:7px 8px;cursor:pointer}
.xr-bmark:hover{border-color:var(--cyan)}
.xr-bmark span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.xr-bmark em{font-style:normal;color:var(--dim);font-family:var(--mono);font-size:9px}
.xr-bmark button{border:0;background:none;color:var(--dim);cursor:pointer;font-size:15px}
.xr-drm{border:1px solid rgba(255,255,255,.1);border-radius:10px;background:rgba(255,255,255,.035);padding:9px;color:var(--dim);font-size:12px;line-height:1.5}
.xr-drm summary{cursor:pointer;color:var(--gold-bright);font-family:var(--mono);font-size:10px;letter-spacing:1px;text-transform:uppercase}
.xr-drm a{color:var(--cyan);text-decoration:none}
.xr-drm a:hover{text-decoration:underline}
.xr-show-side{display:none;position:absolute;right:18px;top:70px;z-index:3}
.xr-shell.xr-fulltext .xr-show-side{display:block}
.xr-status{min-height:16px;color:var(--dim);font-size:11px;line-height:1.4}
.panel.max .xr-page{min-height:calc(100vh - 190px)}
@media(max-width:760px){
  .xr-shell{grid-template-columns:1fr}
  .xr-shell:not(.xr-fulltext) .xr-side{max-height:300px}
  .xr-viewer{inset:22px 22px 26px}
  .xr-empty{inset:22px}
  .xr-page{min-height:380px}
  .panel.max .xr-page{min-height:calc(100vh - 220px)}
}