:root{--ink:#263a32;--green:#345847;--muted:#7b847b;--line:#e1e5de;--bg:#f5f6f1;--wood:#ab7d4c}*{box-sizing:border-box}body{margin:0;font:13px 'Noto Sans SC',system-ui,sans-serif;color:var(--ink);background:var(--bg)}header{height:82px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;gap:20px}.brand{display:flex;align-items:center;gap:12px;min-width:250px}.logo{width:43px;height:43px;border-radius:12px;background:var(--green);color:#fff;font-size:32px;text-align:center;line-height:40px}.brand strong{font-size:18px;letter-spacing:1px}small,.brand small{display:block;color:var(--muted);font-size:11px;margin-top:4px}.project input{border:0;background:transparent;font-size:15px;font-weight:600;width:260px;padding:2px}.project span{display:block;font-size:11px;color:var(--muted);margin-top:5px}.actions{display:flex;gap:8px}button,select,input{font:inherit;color:inherit}button{border:1px solid var(--line);background:#fff;padding:10px 13px;border-radius:7px;cursor:pointer;white-space:nowrap;transition:.15s}button:hover{border-color:#78927b;background:#f0f3ed}.primary{background:var(--green);border-color:var(--green);color:white}.primary:hover{background:#274638;color:white}.workspace{display:grid;grid-template-columns:265px minmax(400px,1fr) 260px;max-width:1800px;margin:auto;min-height:calc(100vh - 82px)}aside{background:#fff;padding:25px 20px}.left{border-right:1px solid var(--line)}.right{border-left:1px solid var(--line)}.eyebrow{font-size:9px;letter-spacing:2px;color:#8a958b;font-weight:600}h2{font-size:20px;margin:8px 0}p{line-height:1.8}.panel-head p{color:var(--muted);font-size:11px;margin:0 0 24px}section{padding:19px 0;border-top:1px solid var(--line)}h3{font-size:12px;margin:0 0 17px;color:#8e9b8f}h3 span{color:var(--ink);margin-left:10px}label{display:block;font-size:11px;color:#6b786e;margin-bottom:12px}label input:not([type=checkbox]):not([type=range]),select{width:100%;display:block;border:1px solid var(--line);border-radius:6px;padding:10px 9px;margin-top:6px;background:#fafbf8;outline:none}input:focus,select:focus{border-color:#688871!important}input[type=range]{width:80%;vertical-align:middle;margin-top:10px;accent-color:var(--green)}output{padding-left:5px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.checks{display:flex;flex-wrap:wrap;gap:4px 12px;margin:9px 0}.checks label{display:flex;align-items:center;gap:4px}.checks input{accent-color:var(--green)}.area{padding:13px;background:#edf2e9;display:flex;justify-content:space-between;border-radius:6px;font-size:12px}.area strong{font-size:17px}.hint{font-size:10px;color:#8a9288;line-height:1.9;margin:10px 0 0}.generate{width:100%;margin-top:14px;padding:13px}.footnote{text-align:center}main{padding:28px 25px;min-width:0}.main-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}h1{font-size:24px;font-weight:500;margin:9px 0 0;letter-spacing:.5px}.status{font-size:10px;color:#738472;white-space:nowrap}.status i{display:inline-block;width:6px;height:6px;border-radius:50%;background:#749578;margin-right:6px}.schemes{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:22px}.scheme{padding:12px;text-align:left;background:transparent;border:1px solid #dce2d7}.scheme.active{border-color:var(--green);background:#edf1e8;box-shadow:inset 3px 0 var(--green)}.scheme b{display:block;font-size:12px;margin-bottom:5px}.scheme span{font-size:10px;color:#82907e}.viewbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:8px}.tabs{display:flex;gap:3px;background:#e9ede4;padding:4px;border-radius:8px}.tabs button{background:none;border-color:transparent;padding:8px 12px;font-size:11px}.tabs .active{background:#fff;box-shadow:0 2px 5px #263a3210}.tools{display:flex;gap:6px;align-items:center}.tools select{margin:0;width:75px;padding:8px}.tools button{font-size:10px;padding:8px}.viewport{position:relative;height:min(53vh,540px);min-height:390px;border:1px solid #dfe4d9;border-radius:12px;background:radial-gradient(ellipse at 50% 45%,#f9faf5,#e9eee3);overflow:hidden}canvas{width:100%;height:100%;display:block;touch-action:none;cursor:grab}.view-label{position:absolute;top:20px;left:22px;pointer-events:none;font-size:12px}.view-label small{font-size:10px}.compass{position:absolute;top:20px;right:22px;color:#8b9786;font-size:12px}.modelbadge{position:absolute;bottom:18px;left:22px;font-size:10px;color:#788875}.modelbadge span{margin:0 8px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:9px;margin-top:17px;padding:18px 0}.metrics>div{padding:0 18px;border-right:1px solid var(--line)}.metrics>div:last-child{border:0}.metrics small{margin:0 0 7px;font-size:9px}.metrics strong{font-size:19px;font-weight:500}.note{font-size:11px;color:#8b744f;background:#f3eee2;border-radius:6px;padding:10px 13px;margin-top:12px;line-height:1.8}.legend{display:flex;gap:15px;flex-wrap:wrap;font-size:9px;color:#90998b;margin:15px 0}.legend i{display:inline-block;width:8px;height:8px;border-radius:2px;margin-right:5px}.wood{background:#b78958}.glass{background:#72a4ad}.text{border:0;background:none;padding:10px 0}.danger{color:#aa7060;font-size:10px}.right h3{color:var(--ink)}dialog{border:1px solid var(--line);border-radius:14px;padding:25px;width:560px;max-width:90vw}dialog::backdrop{background:#263a3255}.dialoghead{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.version{display:flex;justify-content:space-between;gap:20px;padding:15px 0;border-top:1px solid var(--line)}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;padding:13px 22px;border-radius:8px;display:none;z-index:20}#printReport{display:none}@media(max-width:1150px){.workspace{grid-template-columns:230px minmax(360px,1fr)}.right{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);gap:25px;border-top:1px solid var(--line)}.right .panel-head{display:none}.brand{min-width:200px}.project{display:none}}@media(max-width:700px){header{height:auto;padding:15px;flex-wrap:wrap}.brand strong{font-size:15px}.actions{width:100%}.workspace{display:flex;flex-direction:column}.left{order:1}.right{order:2;display:block}main{padding:20px 12px}.main-head{gap:10px}h1{font-size:20px}.status{display:none}.scheme{padding:10px 7px}.scheme span{font-size:9px}.viewbar{flex-wrap:wrap}.viewport{height:400px}.metrics>div{padding:0 8px}.metrics strong{font-size:16px}.left section{display:inline-block;width:100%;vertical-align:top}.panel-head p{margin-bottom:10px}}@media print{body>*:not(#printReport){display:none!important}#printReport{display:block;color:#222;padding:12mm;font:12px system-ui}#printReport h1{font-size:24px}#printReport img{width:100%;max-height:100mm;object-fit:contain}#printReport .page{break-after:page}#printReport table{width:100%;border-collapse:collapse;margin:20px 0}#printReport td{border:1px solid #ccc;padding:8px}#printReport p{line-height:1.8}@page{size:A4;margin:12mm}}

[hidden]{display:none!important}

.scheme-actions{display:flex;gap:16px;align-items:center;margin-bottom:12px}.scheme-actions span{font-size:11px;color:#809079}.actions{flex-wrap:wrap}

.viewport{background:radial-gradient(ellipse at 50% 40%,#fffef9,#eeeee7)}

#roofDemo{width:1100px;max-width:96vw;max-height:94vh;padding:25px;overflow:auto}.demo-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.demo-head h2{font-size:22px}.demo-body{display:grid;grid-template-columns:minmax(0,1fr) 245px;gap:24px;margin-top:20px}#roofDemoCanvas{width:100%;height:570px;background:radial-gradient(#fffef8,#edf0e6);border-radius:12px}.demo-controls{display:flex;gap:8px;flex-wrap:wrap;margin:15px 0}.demo-range input{width:70%}.demo-info button{display:block;width:100%;text-align:left;margin-bottom:7px;border-left:4px solid #d5ddcf}.demo-info button.selected{border-left-color:#345847;background:#edf3e8}.demo-info h3{color:#345847;margin-top:22px}.demo-info p{font-size:12px;line-height:1.9}.tools{flex-wrap:wrap}.viewbar{flex-wrap:wrap}@media(max-width:700px){#roofDemo{padding:16px}.demo-body{grid-template-columns:1fr}.demo-head h2{font-size:18px}#roofDemoCanvas{height:450px}#roofLayerList{display:grid;grid-template-columns:1fr 1fr;gap:5px}.demo-info button{margin:0;font-size:11px}.demo-controls button{padding:9px 10px}}
/* Modern studio UI */
:root{--ink:#23352f;--green:#235e4b;--muted:#77857e;--line:#e3e9e5;--bg:#f3f6f4}body{background:#f3f6f4}header{height:88px;box-shadow:0 3px 18px #203c3010;border-bottom:0}.logo{background:linear-gradient(145deg,#367961,#1d4d3b);box-shadow:0 5px 12px #235e4b20}.brand strong{letter-spacing:.2px}.workspace{padding:18px;gap:18px;grid-template-columns:250px minmax(400px,1fr) 250px}aside{border:1px solid #e3e9e5!important;border-radius:16px;padding:24px 18px;box-shadow:0 4px 20px #1e443005}main{padding:18px 4px}.panel-head h2{font-weight:600}h1{font-size:25px;font-weight:600;letter-spacing:-.5px}.eyebrow{color:#94a298}button{border-radius:9px;font-weight:500}.primary{box-shadow:0 3px 8px #235e4b12}.primary:hover{background:#184d3b;transform:translateY(-1px)}label input:not([type=checkbox]):not([type=range]),select{background:#f7f9f8;border-radius:8px;padding:11px}.area{background:#eaf3ed;color:#245c45}.scheme{background:#fff;border-radius:11px;padding:15px;border-color:#e1e8e2}.scheme.active{background:#edf5ef;border-color:#5b9478;box-shadow:inset 0 3px #367459}.scheme span{line-height:1.7}.tabs{background:#e7ede9;padding:5px;border-radius:11px}.tabs .active{border-radius:8px;color:#235e4b}.viewport{border-radius:17px;background:radial-gradient(ellipse at 50% 40%,#fffefa,#eef2ed);border:1px solid #dde7df;box-shadow:0 8px 30px #264a3210}.metrics{border-radius:13px;box-shadow:0 4px 16px #264a3206;padding:21px 0}.metrics strong{font-weight:600}.note{border:1px solid #e5e9dc;background:#f4f6ec;color:#768362}.scheme-actions{justify-content:space-between}.hint{font-size:11px;line-height:1.8}.view-label{background:#ffffffb5;backdrop-filter:blur(8px);border-radius:8px;padding:9px 12px;top:16px;left:16px}.modelbadge{background:#ffffffb5;padding:8px 12px;border-radius:20px}.tools button{padding:9px 11px}.status{color:#5d8870}dialog{box-shadow:0 24px 100px #142e3440;border:0}.demo-head{border-bottom:1px solid #e3e9e5;padding-bottom:16px}.demo-info button{border-radius:9px}#pdfDownload{font-size:11px}@media(max-width:1150px){.workspace{grid-template-columns:230px minmax(340px,1fr)}.right{grid-column:1/-1}}@media(max-width:700px){header{height:auto;padding:18px}.workspace{padding:12px;gap:14px}main{padding:12px 0}.main-head{margin-bottom:18px}h1{font-size:22px}.scheme-actions{align-items:flex-start;gap:10px}.scheme-actions span{max-width:130px;font-size:10px}.scheme{padding:12px 8px}.viewport{min-height:360px;height:410px}.view-label{font-size:11px;padding:7px 9px}.metrics small{font-size:9px}.metrics strong{font-size:15px}.actions button{flex:1}.right{display:block}.tools{gap:5px}.tabs button{padding:8px 10px}.demo-body{gap:15px}}

body{padding-bottom:env(safe-area-inset-bottom)}header{padding-top:max(12px,env(safe-area-inset-top))}.install-help{max-width:440px;width:calc(100% - 28px);padding:24px;border-radius:20px}.install-help p{line-height:1.8}.install-help h2{margin-top:0}.install-help button{min-height:44px}.pwa-state{font-size:12px;color:#587361}.update-action{margin-top:10px}@media(max-width:700px){input,select{font-size:16px}button{min-height:42px}.actions{flex-wrap:wrap}.actions button{flex:1 1 40%}header{padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}}

.height-result{padding:10px;background:#edf4ef;border-radius:10px;display:flex;justify-content:space-between}.height-help{font-size:11px;line-height:1.7;background:#f5f7f4;border-radius:10px;padding:10px;margin:12px 0}.height-help summary{cursor:pointer;font-weight:600}.validation-item{display:grid;gap:4px;padding:9px 0;border-bottom:1px solid #e0d9c9}.validation-item strong{color:#825719}.validation-item span{font-size:12px}.note{line-height:1.6}#adjustments,#heightRequestResult{color:#92551e;line-height:1.6}#zoomIn,#zoomOut{font-size:20px;min-width:38px}[hidden]{display:none!important}@media(max-width:700px){.brand{min-width:0}.brand .logo{width:72px!important;height:49px!important}.viewbar{flex-wrap:wrap}.tabs,.tools{flex-wrap:wrap}header{gap:10px}.project{width:100%}.note{font-size:12px}}
/* Keep the model visible while desktop users edit long parameter panels. */
@media(min-width:1151px){.workspace{height:calc(100dvh - 88px);min-height:0}.workspace>aside,.workspace>main{min-height:0;overflow-y:auto;overscroll-behavior:contain}.viewport{min-height:300px;height:clamp(300px,43vh,500px)}}
@media(max-width:1150px){.project{display:block}header{height:auto;min-height:88px;flex-wrap:wrap}.project input{max-width:100%}}
@media(max-width:700px){.project{order:1}.actions{order:2}.project input{width:100%}.project span{font-size:11px}}

/* Five-step editor, with the preview always alongside on desktop. */
header{height:78px;min-height:78px;padding:8px 24px}.project-menu{position:relative;margin-left:auto;z-index:30}.project-menu>summary{list-style:none;cursor:pointer;padding:12px 16px;background:#edf4ef;border:1px solid #dce7df;border-radius:10px;font-weight:600}.project-menu .actions{position:absolute;right:0;top:48px;width:340px;padding:18px;background:white;box-shadow:0 16px 50px #183e3030;border:1px solid var(--line);border-radius:14px;display:grid;grid-template-columns:1fr 1fr}.project-menu .project{display:block!important;grid-column:1/-1;width:100%;margin-bottom:10px}.project-menu .project input{width:100%}.wizard-workspace{grid-template-columns:360px minmax(0,1fr);height:calc(100dvh - 78px);min-height:0}.wizard-workspace>.left{display:flex;flex-direction:column;overflow:hidden;padding:20px 18px;min-height:0}.panel-head p{margin-bottom:8px}.step-tabs{display:flex;gap:4px;padding:10px 0 14px}.step-tabs button{flex:1;min-width:0;white-space:normal;padding:8px 2px;font-size:10px;background:#f4f7f4;border:0}.step-tabs b{display:block;font-size:15px;margin-bottom:5px}.step-tabs .active{background:#235e4b;color:white}.step-body{overflow:auto;min-height:0;flex:1;padding-right:5px;overscroll-behavior:contain}.step-card section{padding-top:12px}.step-card section h3{font-size:13px}.step-footer{border-top:1px solid var(--line);padding-top:12px;margin-top:10px}.step-footer>span{display:block;font-size:11px;margin-bottom:9px;color:#6e8275}.step-footer>div{display:flex;gap:6px;justify-content:space-between}.wizard-workspace>main{overflow:auto;min-height:0}.wizard-workspace .viewport{height:clamp(300px,47vh,560px)}
@media(max-width:900px){.wizard-workspace{grid-template-columns:310px minmax(0,1fr);gap:12px;padding:12px}.main-head h1{font-size:20px}.main-head .status{display:none}.metrics{grid-template-columns:1fr 1fr;gap:12px}}
@media(max-width:700px){header{padding:8px 12px;flex-wrap:nowrap;gap:4px}.brand{gap:5px}.brand strong{font-size:13px}.brand small{font-size:9px}.brand .logo{width:55px!important;height:42px!important}.project-menu>summary{font-size:11px;padding:10px}.project-menu .actions{width:min(340px,calc(100vw - 24px));top:42px}.wizard-workspace{height:auto;display:flex;flex-direction:column}.wizard-workspace>.left{order:0;height:550px;max-height:72dvh;min-height:400px;padding:16px}.wizard-workspace>main{order:1;overflow:visible;padding:4px 0}.step-tabs{padding:5px 0 10px}.panel-head h2{font-size:18px;margin:4px 0}.panel-head .eyebrow,.panel-head>p:not(.hint){display:none}.wizard-workspace .viewport{height:360px;min-height:300px}.step-body label{margin-bottom:10px}.step-footer button{min-height:44px}.step-footer{margin-top:6px;padding-top:8px}.metrics{grid-template-columns:repeat(4,1fr);gap:0}}

.export-pair{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:8px}.project-menu .actions .project{order:0}.project-menu .export-pair{order:3}

.quote-row{padding:12px 0;border-bottom:1px solid var(--line)}.quote-line{display:flex;align-items:center;gap:5px;margin-top:8px;font-size:11px}.quote-line input{width:83px;min-width:0;padding:9px 6px;border:1px solid #b5cdbd;border-radius:7px;background:#f4faf6}.quote-line b{margin-left:auto}.quote-row small{font-size:10px}

.quote-export{width:100%;margin-bottom:4px}.quote-download{display:block;margin:12px 0;color:var(--green);line-height:1.8}

.layout-actions{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}.layout-actions label{display:flex;align-items:center;gap:4px}.layout-actions input{width:auto}#layoutEditor button{margin:4px 0}#layoutEditor h4{margin:16px 0 8px}