:root{--page-bg: #73777d;--scene-bg-top: #73777d;--scene-bg-middle: #686d74;--scene-bg-bottom: #5f646b;--surface: rgba(255, 255, 255, .88);--surface-solid: #ffffff;--surface-muted: #eeece6;--text-primary: #171715;--text-secondary: #66635d;--border: rgba(20, 20, 18, .12);--accent: #aa874e;--accent-soft: #e7dac4;color:var(--text-primary);background:var(--page-bg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}html,body,#root{width:100%;height:100%;margin:0;overflow:hidden}body{min-width:320px;min-height:100dvh}button,input,select{font:inherit}button{min-height:34px;border:1px solid var(--border);border-radius:7px;background:#ffffffc7;color:var(--text-primary);cursor:pointer;padding:0 12px;transition:background .16s ease,border-color .16s ease,transform .16s ease}button:hover,button.active{border-color:#aa874e9e;background:var(--accent-soft)}button:focus-visible,input:focus-visible{outline:3px solid rgba(170,135,78,.3);outline-offset:2px}button:disabled{cursor:wait;opacity:.64}input{min-height:34px;width:100%;border:1px solid var(--border);border-radius:7px;background:#ffffffeb;color:var(--text-primary);padding:0 10px;outline:none}input:focus{border-color:#aa874eb8}.showroom-app{width:100vw;height:100dvh;overflow:hidden;background:linear-gradient(180deg,var(--scene-bg-top) 0%,var(--scene-bg-middle) 52%,var(--scene-bg-bottom) 100%)}.viewer-stage{position:relative;width:100%;height:100%;min-width:0;min-height:0;background:linear-gradient(180deg,#73777d,#686d74 52%,#5f646b)}.viewer-canvas,.viewer-canvas canvas{display:block;width:100%;height:100%}.viewer-canvas{position:absolute;inset:0}.stage-shade{pointer-events:none;position:absolute;inset:0;background:radial-gradient(ellipse at 50% 44%,rgba(76,81,88,.16) 0%,rgba(76,81,88,.06) 30%,transparent 60%),radial-gradient(ellipse at 50% 76%,rgba(0,0,0,.06) 0%,rgba(0,0,0,.018) 25%,transparent 50%),radial-gradient(ellipse at 50% 52%,transparent 54%,rgba(0,0,0,.06) 100%)}.hero-panel,.sales-panel,.feature-panel,.control-strip,.interaction-panel,.debug-panel,.owner-panel{border:1px solid var(--border);background:var(--surface);box-shadow:0 20px 50px #302d2624;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.hero-panel{position:absolute;top:22px;right:24px;width:min(406px,calc(100vw - 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