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.modal-overlay{position:fixed;inset:0;background:#040b18a8;z-index:100;padding:24px;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(4px)}.modal-panel{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:14px;max-width:1180px;width:100%;max-height:90vh;overflow-y:auto;padding:25px}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:23px}.modal-header h2{font-size:1.25rem}.modal-close,.icon-button{color:var(--muted);background:transparent;border:1px solid var(--border);border-radius:7px;width:38px;height:38px;font-size:1.4rem;display:grid;place-items:center}.install-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.install-card{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--border);padding:14px;border-radius:9px;color:var(--text);text-align:left}.install-card:hover{border-color:var(--accent);background:var(--accent-soft)}.install-card img{width:68px;height:68px;object-fit:contain;background:white;border-radius:6px;flex:none}.install-title{display:block;font-size:.875rem;font-weight:600;line-height:1.5}.install-desc{display:block;font-size:.75rem;color:var(--muted);font-weight:400;margin-top:4px}.modal-cancel{width:100%;margin-top:18px;padding:12px;background:var(--surface-soft);border:1px solid var(--border);border-radius:7px;color:var(--text)}.report-dialog{width:min(520px,calc(100% - 30px));padding:26px;background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:12px;box-shadow:0 25px 80px #0005}.report-dialog::backdrop{background:#071122aa;backdrop-filter:blur(4px)}.report-dialog-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.report-dialog h2{font-size:1.3rem;letter-spacing:-.03em}.report-dialog>p{font-size:.875rem;color:var(--muted);margin-top:14px}.report-meta-fields{display:flex;flex-direction:column;gap:16px;margin:23px 0}.report-meta-fields label{font-size:.875rem;color:var(--muted)}.report-meta-fields input{display:block;margin-top:7px}.dialog-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:22px}.print-report-document{display:none}.report-preview-toolbar{display:flex;justify-content:space-between;gap:15px;background:var(--surface);border:1px solid var(--border);padding:12px;margin-bottom:20px;border-radius:8px}.report-preview .print-report-document{display:block}.report-preview main>*:not(.print-report-document){display:none!important}.report-sheet{background:white;color:#17243a;max-width:900px;margin:auto;padding:40px;box-shadow:0 6px 40px #0001}.report-header{display:flex;justify-content:space-between;align-items:start;border-bottom:3px solid #285ee8;padding-bottom:20px;margin-bottom:24px;gap:15px}.report-brand{font:800 1.4rem var(--heading);letter-spacing:-.06em}.report-header h1{font-size:1.4rem;margin-top:10px;letter-spacing:-.03em}.report-header time{font-size:.75rem;color:#647189}.report-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;padding:14px 0;margin-bottom:18px;border-bottom:1px solid #dce1e9;overflow-wrap:anywhere}.report-meta dt{font-size:.75rem;color:#647189}.report-meta dd{margin:3px 0;font-size:.875rem}.report-sheet h2{margin:23px 0 12px}.report-inputs{display:grid;grid-template-columns:1fr 1fr;gap:0 22px;font-size:.75rem;margin-bottom:20px}.report-input-row{display:flex;justify-content:space-between;gap:15px;padding:7px 0;border-bottom:1px solid #e0e6ef;break-inside:avoid}.report-input-row strong{font-weight:500;text-align:right;max-width:65%}.report-sheet .resultcols{grid-template-columns:1fr 1fr;gap:0 15px}.report-sheet .box{break-inside:avoid}.report-sheet .assumption{font-size:.75rem}.report-sheet .box .row,.report-sheet .box h3{font-size:.75rem}.report-sheet .metric-grid{grid-template-columns:1fr 1fr}.report-sheet .result-hero{padding:15px}.report-sheet .result-value{font-size:2.1rem}.report-sheet .metric-value{font-size:1.1rem}.report-footer{margin-top:25px;padding-top:15px;border-top:1px solid #dce1e9;font-size:.75rem;color:#647189}.report-sheet{--surface:#fff;--surface-soft:#f8fafd;--text:#17243a;--muted:#647189;--border:#e0e6ef;--accent:#285ee8;--accent-soft:#edf2ff;--green:#137052;--green-bg:#eaf7f1;--red:#b83e48;--red-bg:#fdf0f1;color-scheme:light}.input-error{border-color:var(--red)!important}.field-error{color:var(--red);font-size:.75rem}
@media(min-width:1650px){.calculator-layout{grid-template-columns:minmax(520px,1fr) minmax(590px,1.15fr)}.resultcols{grid-template-columns:1fr 1fr;gap:0 12px}.rescol{display:flex;flex-direction:column}.result-panel{padding:25px}.panel-fields{gap:20px 24px}}
@media(max-width:1250px){.sidebar{width:186px;padding-left:12px;padding-right:12px}.brand{font-size:1.08rem;gap:7px}.app-shell{margin-left:186px}.topbar{padding-left:24px;padding-right:24px}main{padding:27px 24px}.calculator-layout{gap:18px}.panel-fields{padding:17px;gap:15px 12px}.panel-heading{padding:17px}.standard-badge{display:none}.result-panel{padding:17px}.tool-grid{gap:15px}.tool-card{padding:22px 18px}.tool-card h2{font-size:1.06rem}.tool-card-bottom{font-size:.8125rem}.home-reference{align-items:start;flex-direction:column}}
@media(max-width:1050px){.sidebar{width:172px}.app-shell{margin-left:172px}.brand{font-size:1rem}.brand-mark{width:27px;height:31px}.nav-link{font-size:.8125rem;gap:8px;padding:12px 9px}.nav-label{font-size:.6875rem;margin-left:8px}.calculator-layout{grid-template-columns:minmax(0,1fr)}.result-panel{position:static;max-height:none}.resultcols{grid-template-columns:1fr 1fr;gap:0 12px}.rescol{display:flex;flex-direction:column}.tool-grid{grid-template-columns:1fr}.tool-card{padding:24px}.tool-card-top{flex-direction:row;align-items:center;gap:16px;margin-bottom:20px}.tool-card>p{margin-bottom:20px}.tool-card h2{font-size:1.25rem}.home-heading{padding:15px 0 32px}.home-heading h1{font-size:2.7rem}.local-tag{display:none}.site-footer{padding:20px 24px;flex-wrap:wrap;gap:12px}.install-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:720px){.sidebar{position:static;width:100%;padding:17px 18px 0;display:block}.brand{font-size:1.3rem}.brand-mark{width:30px;height:34px}.sidebar nav{display:flex;gap:6px;overflow-x:auto;margin-top:18px;padding-bottom:12px}.nav-link{margin:0;white-space:nowrap;flex-shrink:0;font-size:.875rem;padding:10px}.nav-link .icon{width:17px;height:17px}.nav-label,.sidebar-bottom{display:none}.app-shell{margin-left:0}.topbar{min-height:62px;padding:12px 18px}.breadcrumb{font-size:.75rem;gap:9px}.breadcrumb>strong{max-width:160px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.theme-toggle{padding:7px 9px}.theme-toggle>span{display:none}main{padding:25px 18px}.page-heading{margin-bottom:19px}.eyebrow{font-size:.75rem;letter-spacing:.08em}h1{font-size:1.75rem}.page-heading p{font-size:.875rem;line-height:1.7}.scope-note{margin-bottom:18px}.scope-note summary{font-size:.75rem;gap:8px;padding:12px}.scope-note p{padding-left:12px;font-size:.8125rem}.calculator-layout{gap:18px}.input-stack{gap:15px}.panel-heading{padding:17px 16px}.panel-fields{padding:18px 16px}.field input[type=number],.field input[type=text],.field select{font-size:1rem;min-height:46px}.result-panel{padding:16px}.resultcols{display:block}.rescol{display:contents}.home-heading h1{font-size:2.4rem}.home-heading br{display:none}.home-heading p{font-size:.9375rem}.tool-card{padding:23px}.home-reference>div{padding-left:0}.home-reference>div>.icon{position:static;margin-bottom:15px}.site-footer{padding:20px 18px;justify-content:flex-start;font-size:.75rem}.site-footer>span:last-child{width:100%}.modal-overlay{padding:12px}.modal-panel{padding:18px;max-height:92vh}.install-grid{grid-template-columns:1fr}.install-card img{width:60px;height:60px}.modal-header h2{font-size:1.1rem}.report-sheet{padding:20px}.report-sheet .resultcols{display:block}.report-inputs{grid-template-columns:1fr}.report-meta{grid-template-columns:1fr}.report-header{flex-direction:column}.dialog-actions{flex-direction:column}.report-dialog{padding:22px}.report-preview-toolbar{flex-wrap:wrap}.segment-card{margin:12px;padding:12px;gap:15px 10px}}
@media(max-width:390px){main{padding:22px 12px}.sidebar{padding-left:12px;padding-right:12px}.panel-fields,.segment-card{grid-template-columns:minmax(0,1fr)}.segment-header{flex-wrap:wrap}.segment-label{flex-basis:100%}.field,.section-title{grid-column:1/-1}.metric-grid{grid-template-columns:1fr 1fr}.metric{padding:11px}.panel-heading p{font-size:.75rem}.result-status{font-size:.75rem}.nav-link{font-size:.8125rem}.scope-note summary{font-size:.75rem}.report-inputs{display:block}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{@page{size:A4;margin:13mm 12mm}html,body{background:white!important;color:#17243a!important;font-size:11pt}body>*:not(.app-shell),.topbar,.site-footer,main>*:not(.print-report-document),.report-preview-toolbar{display:none!important}.app-shell{margin:0!important;min-height:0}main{margin:0;padding:0;max-width:none}.print-report-document{display:block!important}.report-sheet{padding:0;box-shadow:none;max-width:none}.report-sheet *{-webkit-print-color-adjust:exact;print-color-adjust:exact}.report-sheet h2,.report-sheet h3{break-after:avoid}.report-header{break-inside:avoid}.report-meta{grid-template-columns:repeat(3,1fr)}.report-inputs{display:grid;grid-template-columns:1fr 1fr}.report-sheet .resultcols{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}.report-sheet .rescol{display:contents}.report-sheet .box{break-inside:avoid}.report-sheet .results-main{display:block}.report-sheet .table-scroll{overflow:visible}.report-sheet .sizetable{min-width:0}.report-sheet .sizetable th,.report-sheet .sizetable td{padding:6px;font-size:9pt}.report-sheet tr{break-inside:avoid}.report-sheet .result-value{font-size:28pt}.report-sheet .cite{font-size:8pt}.report-sheet .box .row{font-size:9pt}.report-sheet .assumption{font-size:8pt}.report-sheet .result-hero{break-inside:avoid}.report-sheet .metric-grid{break-inside:avoid}.report-header{flex-direction:row}a{color:inherit;text-decoration:none}dialog{display:none!important}}
.results-empty .primary{margin-top:24px}.calculate-bar{position:sticky;bottom:16px;z-index:5;box-shadow:0 8px 32px #07112218}.panel-heading p,.advanced-panel small{font-size:.8125rem}.panel-fields>.note{font-size:.8125rem}.nav-label{font-size:.75rem}.sidebar-bottom{font-size:.75rem}.field>.val{color:var(--text)!important}@media(max-width:720px){.calculate-bar{bottom:8px}}
@media(max-width:720px){.sidebar nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 8px;overflow:visible;margin-top:15px;padding-bottom:14px}.nav-link{min-width:0}.home-heading h1{letter-spacing:-.05em}}

/* Engineering calculation report */
.report-actions{gap:8px}.report-actions .ghost{min-width:0}
.report-meta-fields{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:23px 0}.report-meta-fields label:first-child{grid-column:1/-1}.report-meta-fields label{min-width:0}
.report-preview-toolbar{align-items:center;position:sticky;top:8px;z-index:3;max-width:900px;margin:0 auto 20px}.report-preview-toolbar>span{color:var(--muted);font-size:.8125rem;font-weight:600;text-align:center}
.engineering-report{max-width:900px;padding:0;background:transparent;box-shadow:none}
.report-page{--report-blue:#1769e0;--report-navy:#12233f;--report-line:#dbe3ee;--report-muted:#5e6b7e;position:relative;display:flex;flex-direction:column;width:100%;min-height:1128px;padding:38px 42px 30px;margin:0 auto 22px;background:#fff;color:#17243a;box-shadow:0 7px 35px #0a19331a;overflow:hidden}
.engineering-masthead{display:grid;grid-template-columns:150px minmax(0,1fr) 132px;align-items:start;gap:20px;padding-bottom:18px;margin-bottom:18px;border-bottom:3px solid var(--report-blue)}
.engineering-brand{display:flex;align-items:center;gap:8px;font:700 1rem var(--heading);letter-spacing:-.04em;min-width:0}.engineering-brand>span:last-child{overflow-wrap:anywhere}.engineering-brand-mark{display:grid;place-items:center;flex:none;width:29px;height:32px;border-radius:7px;background:var(--report-blue);color:#fff;font-size:1rem}.engineering-brand strong{font-weight:500;color:#55708f}
.engineering-title{min-width:0;text-align:center}.engineering-title>div{font:700 .62rem var(--body);letter-spacing:.17em;color:var(--report-blue)}.engineering-title h1{margin:4px 0 3px;font-size:1.35rem;line-height:1.22;letter-spacing:-.035em;overflow-wrap:anywhere}.engineering-title p{font-size:.7rem;color:var(--report-muted);overflow-wrap:anywhere}
.engineering-title h1.long-title{font-size:1.05rem;line-height:1.3;letter-spacing:-.025em;text-wrap:balance}.report-field-help{display:block;margin-top:5px;color:var(--muted);font-size:.7rem;line-height:1.4}.report-field-error{display:block;margin-top:5px;color:var(--red);font-size:.75rem;line-height:1.4}.report-meta-fields input[aria-invalid=true]{border-color:var(--red)}
.engineering-masthead dl{min-width:0;margin:0;display:grid;gap:7px}.engineering-masthead dl>div{min-width:0}.engineering-masthead dt{text-transform:uppercase;font-size:.58rem;letter-spacing:.1em;color:var(--report-muted)}.engineering-masthead dd{margin:1px 0 0;font-size:.69rem;font-weight:650;overflow-wrap:anywhere}
.engineering-section{min-width:0;margin-bottom:14px;border:1px solid var(--report-line);break-inside:avoid}.engineering-section>h2{padding:7px 11px;background:var(--report-navy);color:#fff;font-size:.75rem;line-height:1.25;letter-spacing:.035em}.engineering-section-body{min-width:0}.engineering-section-body>h3{padding:7px 11px 4px;font:700 .68rem var(--body);color:var(--report-blue)}
.engineering-row{display:grid;grid-template-columns:minmax(125px,.85fr) minmax(110px,.7fr) minmax(0,1fr);gap:10px;align-items:start;min-width:0;padding:5px 10px;border-top:1px solid var(--report-line);font-size:.67rem;line-height:1.35}.engineering-row:first-child{border-top:0}.engineering-row>span{min-width:0;color:var(--report-muted);overflow-wrap:anywhere}.engineering-row>strong{min-width:0;font-weight:650;overflow-wrap:anywhere}.engineering-row>small{min-width:0;color:var(--report-muted);font-size:.61rem;line-height:1.35;overflow-wrap:anywhere}.engineering-two-column{display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start;min-width:0}.engineering-two-column>.engineering-section{min-width:0}
.engineering-installation{display:flex;align-items:center;gap:13px;margin:0;padding:8px 10px;border-bottom:1px solid var(--report-line);break-inside:avoid}.engineering-installation img{width:74px;height:56px;object-fit:contain;border:1px solid var(--report-line);border-radius:4px;background:#fff}.engineering-installation figcaption{display:grid;gap:3px;font-size:.67rem}.engineering-installation figcaption span{color:var(--report-muted);font-size:.61rem}
.engineering-check{display:flex;align-items:center;justify-content:space-between;gap:14px;min-width:0;padding:8px 10px;border-top:1px solid var(--report-line);font-size:.68rem;break-inside:avoid}.engineering-check:first-child{border-top:0}.engineering-check>span{display:grid;min-width:0;gap:2px}.engineering-check strong,.engineering-check small{overflow-wrap:anywhere}.engineering-check small{font-size:.61rem;color:var(--report-muted)}.engineering-check>b{flex:none;min-width:58px;padding:3px 8px;border-radius:999px;text-align:center;text-transform:uppercase;font-size:.58rem;letter-spacing:.06em}.engineering-check.pass>b{background:#e3f5ed;color:#087650}.engineering-check.fail>b{background:#fde8ea;color:#ab2633}.engineering-check.neutral>b{background:#edf1f6;color:#5e6b7e}
.engineering-table-wrap{max-width:100%;overflow-x:auto}.engineering-table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:.61rem}.engineering-table th,.engineering-table td{padding:5px 4px;border-right:1px solid #fff;border-bottom:1px solid var(--report-line);text-align:center;overflow-wrap:anywhere}.engineering-table th{background:#e8f0fc;color:#263e61;font-weight:700}.engineering-table th:first-child{width:5%}.engineering-table th small{font-size:.55rem;color:var(--report-muted)}.engineering-table tr{break-inside:avoid}.engineering-table td.pass{background:#e3f5ed;color:#087650}.engineering-table td.fail{background:#fde8ea;color:#ab2633}.engineering-table tr.selected td{box-shadow:inset 0 2px var(--report-blue),inset 0 -2px var(--report-blue);font-weight:750}.engineering-table tr.selected td:first-child{background:var(--report-blue);color:#fff}.engineering-table-note,.engineering-prose{padding:8px 10px;font-size:.61rem;line-height:1.45;color:var(--report-muted)}
.engineering-disclaimer{margin-top:auto;padding:9px 11px;border:1px solid var(--report-line);background:#f7f9fc;color:var(--report-muted);font-size:.58rem;line-height:1.45}.engineering-page-footer{display:grid;gap:5px;margin-top:auto;padding-top:8px;border-top:1px solid var(--report-line);color:var(--report-muted);font-size:.55rem}.engineering-page-footer p{margin:0;font-style:italic;line-height:1.35}.engineering-page-footer div{display:flex;justify-content:space-between;gap:15px}.engineering-page-footer span{min-width:0;overflow-wrap:anywhere}

@media(max-width:720px){
  .report-meta-fields{grid-template-columns:1fr}.report-meta-fields label:first-child{grid-column:auto}
  .report-preview-toolbar{position:static;flex-wrap:wrap}.report-preview-toolbar>span{order:-1;flex:1 0 100%}.report-preview-toolbar button{flex:1}
  .report-sheet{padding:18px}.engineering-report{padding:0}.report-page{min-height:0;padding:20px 16px;margin-bottom:14px;overflow:hidden}.engineering-masthead{grid-template-columns:1fr;gap:10px}.engineering-title{text-align:left}.engineering-masthead dl{grid-template-columns:1fr 1fr}.engineering-two-column{grid-template-columns:1fr}.engineering-row{grid-template-columns:minmax(92px,.8fr) minmax(0,1.2fr)}.engineering-row>small{grid-column:1/-1}.engineering-table{min-width:500px}.engineering-page-footer{margin-top:16px}
  .report-actions{flex-direction:column}.report-actions .ghost{width:100%}
}
@media(max-width:390px){.report-preview-toolbar button{flex-basis:100%}.engineering-masthead dl{grid-template-columns:1fr}.engineering-title h1.long-title{font-size:.92rem}.engineering-row{grid-template-columns:1fr}.engineering-row>small{grid-column:auto}.engineering-check{align-items:flex-start}.engineering-check>b{min-width:54px}}

@media print{
  @page{size:A4 portrait;margin:0}
  .report-preview-toolbar{display:none!important}.engineering-report{width:210mm!important;max-width:none!important;margin:0!important}.report-page{width:210mm!important;min-height:297mm!important;margin:0!important;padding:10mm 11mm 8mm!important;box-shadow:none!important;overflow:visible!important;break-after:page;page-break-after:always}.report-page:last-child{break-after:auto;page-break-after:auto}.engineering-masthead{grid-template-columns:36mm minmax(0,1fr) 31mm;gap:4mm;margin-bottom:4mm;padding-bottom:4mm;break-inside:avoid}.engineering-section{margin-bottom:3mm}.engineering-section>h2{padding:1.6mm 2.5mm}.engineering-row{grid-template-columns:36mm 39mm minmax(0,1fr);gap:2mm;padding:1.25mm 2.5mm}.engineering-two-column{grid-template-columns:1fr 1fr;gap:3mm}.engineering-table-wrap{overflow:visible}.engineering-table{min-width:0}.engineering-check{padding:2mm 2.5mm}.engineering-disclaimer{margin-top:auto}.engineering-page-footer{padding-top:2mm}
}

/* Contact page: textarea + full-width form fields, success box (pairs with the existing .errorbox). */
.field textarea{width:100%;min-width:0;border:1px solid var(--border);border-radius:6px;background:var(--surface-soft);color:var(--text);padding:10px 11px;font-size:.875rem;font-family:inherit;resize:vertical;transition:border-color .15s}
.field-full{grid-column:1/-1}
.successbox{padding:18px;background:var(--green-bg);color:var(--green);border:1px solid color-mix(in srgb,var(--green) 25%,transparent);border-radius:7px;font-size:.875rem}
.field label .optional{color:var(--muted);font-weight:400}
.hp-field{position:absolute;left:-9999px;top:-9999px;height:0;width:0;overflow:hidden}