.house-explorer{grid-template-columns:minmax(0,1.65fr) minmax(280px,1fr);overflow:hidden}
.house-explorer .building-visual{background:#f2eee5;padding:26px 26px 20px;position:relative;min-width:0}
.house-stage{position:relative;margin:10px -16px 0;min-width:0;aspect-ratio:720/490;background:radial-gradient(ellipse at 50% 62%,#fffdf7 0%,#f4f0e7 52%,#e9e4da 100%);border-radius:4px}
.house-stage svg{display:block;width:100%;height:100%;overflow:visible}
.house-stage .house-fallback{position:absolute;inset:0;margin:0}
.house-ready .house-fallback{display:none}
.house-stage:not(.house-ready) .house-model{visibility:hidden}
.house-explorer:not(.interactive-ready) .system-picker,.house-explorer:not(.interactive-ready) .house-focus,.house-explorer:not(.interactive-ready) #system-live,.house-explorer:not(.interactive-ready) #system-inquiry{display:none}
.house-explorer noscript p{font-size:.86rem;padding:12px;line-height:1.6}
.house-model{filter:drop-shadow(0 2px 0 #ffffff90)}
.house-controls{display:flex;justify-content:center;align-items:center;gap:14px;margin:8px 0 22px}
.house-controls[hidden]{display:none}
.house-controls button{width:46px;height:46px;display:grid;place-items:center;font-size:22px;line-height:1;background:#fffdf8;color:#182b3a;border:1px solid #c8c9bf;border-radius:50%;cursor:pointer}
.house-controls button:hover{border-color:#a34829;background:#f0e6d6}
.house-controls button:focus-visible{outline:3px solid #a34829;outline-offset:3px}
.house-controls span{font-size:12px;letter-spacing:.04em;color:#52616a;min-width:110px;text-align:center}
.house-explorer .system-picker{gap:8px}
.house-explorer .system-picker button{background:#fffdf8;border-color:#c9c9be;min-height:52px}
.house-explorer .system-picker button[aria-pressed=true]{color:#fff;background:#182b3a;border-color:#182b3a}
.house-explorer .system-picker button[aria-pressed=true] span{color:#efdac8}
.house-explorer .system-detail{background:#fffdf8;padding:32px}
.house-focus{margin:0 0 23px;padding-bottom:22px;border-bottom:1px solid #ded7c9}
.house-focus-kicker{margin:0 0 10px;font-size:10px;letter-spacing:.09em;color:#a34829;text-transform:uppercase;font-weight:700}
.house-focus h3{margin:0 0 11px;font-size:1.55rem;line-height:1.2;letter-spacing:-.035em}
.house-focus p:last-child{margin:0;font-size:.91rem;line-height:1.6;color:#52616a}
.house-explorer #system-title{font-size:1.3rem;margin:0 0 10px}
.house-explorer #system-description{font-size:.86rem}
.house-explorer .system-facts{margin-top:18px}
.house-option-note{font-size:.75rem;margin:0 0 22px;padding:12px 15px;border-left:3px solid #a34829;background:#f0e6d6;color:#52616a}
.house-footnote{font-size:10px;line-height:1.5;color:#647168;text-align:center;margin:17px 0 0}
@media(max-width:1000px){.house-explorer{grid-template-columns:minmax(0,1fr)}.house-explorer .system-detail{display:grid;grid-template-columns:1fr 1fr;gap:22px}.house-explorer .system-actions{grid-column:1/-1}.house-focus{border-bottom:0;margin:0;padding:0}.house-explorer .system-actions{margin-top:0}.house-stage{max-width:760px;margin-inline:auto}}
@media(max-width:600px){.house-explorer .building-visual{padding:18px 12px}.house-stage{margin:8px -10px 0;aspect-ratio:720/530}.house-explorer .diagram-top{font-size:9px;gap:8px}.house-explorer .system-picker{grid-template-columns:1fr 1fr;gap:8px}.house-explorer .system-picker button{font-size:.88rem;min-height:48px}.house-explorer .system-detail{display:block;padding:24px 20px}.house-focus{padding-bottom:20px;margin-bottom:23px;border-bottom:1px solid #ded7c9}.house-explorer .system-actions{margin-top:22px}.house-controls{margin:0 0 18px}.house-option-note{font-size:.72rem}.house-footnote{font-size:9px}}
@media(prefers-reduced-motion:reduce){.house-explorer *{scroll-behavior:auto!important;transition:none!important}}