:root{--ink:#22211e;--muted:#88847c;--line:#22211e1f;--paper:#f4f2ed;--accent:#b26942;--stage:#d9d5cc}*{box-sizing:border-box}html,body{min-height:100%}body{background:var(--paper);color:var(--ink);margin:0;font-family:Arial,PingFang SC,Hiragino Sans GB,sans-serif}button{font:inherit}.viewer-shell{grid-template-columns:minmax(0,1fr) 368px;min-height:100svh;display:grid;overflow:hidden}.viewer-stage{background:var(--stage);min-height:100svh;position:relative}.viewer-stage canvas{display:block;width:100%!important;height:100%!important}.stage-topline,.stage-help{z-index:2;pointer-events:none;position:absolute}.stage-topline{justify-content:space-between;align-items:center;display:flex;top:28px;left:32px;right:32px}.eyebrow,.section-label,.status-pill,.stage-help,.panel-footer,.room-index{letter-spacing:.15em;text-transform:uppercase;font-size:10px}.eyebrow{color:#22211e8c}.status-pill{color:#22211e8c;align-items:center;gap:8px;display:flex}.status-pill i{background:#c58a65;border-radius:50%;width:7px;height:7px;display:block;box-shadow:0 0 0 4px #c58a6526}.status-pill.is-ready i{background:#5c8b70;box-shadow:0 0 0 4px #5c8b7026}.stage-help{color:#22211e80;bottom:26px;left:32px}.model-loading{width:230px;color:var(--ink);text-align:left;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#f9f7f2c7;border:1px solid #ffffff8c;padding:22px 24px 20px;box-shadow:0 18px 50px #3b342b1f}.model-loading .loading-kicker{color:var(--accent);letter-spacing:.18em;margin-bottom:10px;font-size:9px;display:block}.model-loading strong{font-size:14px;font-weight:500;display:block}.model-loading small{color:var(--muted);margin-top:8px;font-size:11px;display:block}.loading-track{background:#22211e21;height:2px;margin-top:18px}.loading-track span{background:var(--accent);height:100%;transition:width .2s;display:block}.control-panel{background:var(--paper);border-left:1px solid var(--line);flex-direction:column;min-height:100svh;padding:30px 28px 24px;display:flex}.brand-mark{align-items:center;gap:12px;display:flex}.brand-mark>span{letter-spacing:-.08em;font-family:Georgia,serif;font-size:34px;line-height:.8}.brand-mark strong{letter-spacing:.14em;font-size:10px;font-weight:600;display:block}.brand-mark small{color:var(--muted);margin-top:5px;font-size:11px;display:block}.panel-intro{margin:auto 0 34px}.panel-intro h1{letter-spacing:-.055em;margin:16px 0 12px;font-family:Georgia,Songti SC,serif;font-size:clamp(34px,3vw,45px);font-weight:400;line-height:1.05}.panel-intro h1 em{color:var(--accent);font-style:normal}.panel-intro p{max-width:255px;color:var(--muted);margin:0;font-size:12px;line-height:1.8}.room-nav{border-top:1px solid var(--line)}.section-label{color:var(--muted);padding:18px 0 9px;display:block}.room-button{border:0;border-bottom:1px solid var(--line);width:100%;color:var(--ink);text-align:left;cursor:pointer;background:0 0;grid-template-columns:30px 1fr 20px;align-items:center;gap:8px;padding:14px 0;transition:color .2s,padding .2s;display:grid}.room-button:hover,.room-button.is-active{color:var(--accent);padding-left:5px}.room-index{color:var(--muted);font-size:9px}.room-copy strong{font-size:13px;font-weight:500;display:block}.room-copy small{color:var(--muted);margin-top:4px;font-size:10px;display:block}.room-arrow{opacity:.65;font-size:18px;font-weight:300}.spec-grid{background:var(--line);border:1px solid var(--line);grid-template-columns:1fr 1fr;gap:1px;margin-top:30px;display:grid}.spec-grid div{background:var(--paper);padding:13px 12px}.spec-grid span{color:var(--muted);font-size:10px;display:block}.spec-grid strong{margin-top:7px;font-size:12px;font-weight:500;display:block}.panel-footer{color:var(--muted);justify-content:space-between;margin-top:auto;padding-top:24px;font-size:9px;display:flex}@media (max-width:820px){.viewer-shell{display:block;overflow:visible}.viewer-stage{height:70svh;min-height:70svh}.control-panel{min-height:auto;padding:28px 22px 22px}.panel-intro{margin:52px 0 26px}.panel-intro h1{font-size:38px}.panel-footer{margin-top:28px}.stage-topline{top:20px;left:20px;right:20px}.stage-help{bottom:18px;left:20px}}