:root{--blue: #1f4e79;--copper: #d97706;--slate: #4f5b66;--wood: #8b7355;--ee-navy: var(--blue);--ee-sage: #547d63;--bg: #eef1ef;--surface: #ffffff;--border: #c5ccc6;--text: #1a2e34;--muted: var(--slate);--accent: var(--blue);--accent-soft: #e6ede8;--radius: .35rem;--shadow: 0 1px 3px rgba(0, 63, 91, .08);--font: "Inter", "Segoe UI", system-ui, sans-serif;--er-font-family: var(--font);--er-type-app-title: 18px;--er-type-section: 12px;--er-type-subhead: 12px;--er-type-label: 11px;--er-type-value: 12px;--er-type-result: 12px;--er-type-table: 11px;--er-type-note: 11px;--er-type-fine: 10px;--er-weight-regular: 400;--er-weight-medium: 500;--er-weight-semibold: 600;--er-workspace-gutter: 20px;--er-layout-reading-max: 42rem;--er-layout-web-max: 1600px}.everroux-app.app--dark,.app--dark{--bg: #1a1f23;--surface: #2d3436;--border: #4f5b66;--text: #e6e8eb;--muted: #9ca3af;--accent-soft: #3d4549}.everroux-app{min-height:100vh;display:flex;flex-direction:column;font-family:var(--font);background:var(--bg);color:var(--text)}.everroux-app-top{position:sticky;top:0;z-index:200;box-shadow:0 2px 10px #0000001f}.everroux-header{background:var(--blue);color:#fff;border-bottom:3px solid var(--copper);padding:.45rem .75rem}.everroux-header__bar{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr) minmax(0,1fr);align-items:center;gap:.5rem}.everroux-header__brand{display:flex;align-items:center;gap:.65rem;min-width:0}.everroux-header__logo{height:32px;width:32px;object-fit:contain;border-radius:8px}.everroux-header__title{margin:0;font-size:var(--er-type-app-title);font-weight:var(--er-weight-semibold);line-height:1.2}.everroux-header__tagline{margin:0;font-size:.72rem;opacity:.9}.everroux-header__doc{justify-self:center;width:100%;max-width:460px}.everroux-header__doc-input{width:100%;box-sizing:border-box;height:var(--er-input-height, 30px);padding:0 .5rem;border:1px solid rgba(255,255,255,.45);border-radius:.35rem;background:#fffffff5;color:#1f2933;font:inherit;font-weight:600;text-align:center}.everroux-header__doc-sub{margin:.15rem 0 0;font-size:.7rem;text-align:center;color:#ffffffdb}.everroux-header__actions{justify-self:end;display:flex;align-items:center;gap:.35rem}.everroux-header__btn{background:#ffffff26;border:1px solid rgb(255 255 255 / .35);color:#fff;padding:.25rem .55rem;border-radius:4px;cursor:pointer;font:inherit;font-size:.75rem}.everroux-tabs{display:flex;flex-wrap:wrap;align-items:stretch;gap:0;background:var(--surface);border-bottom:1px solid var(--border);padding:0 .5rem}.everroux-tabs__btn{padding:.4rem .75rem;border:none;border-bottom:2px solid transparent;background:none;font:inherit;font-size:.82rem;font-weight:600;color:var(--muted);cursor:pointer}.everroux-tabs__btn--active{color:var(--blue);border-bottom-color:var(--copper)}.everroux-tabs__btn:hover{color:var(--text)}.everroux-tabs .file-menu__trigger{border:none;border-bottom:2px solid transparent;border-radius:0;background:none;color:var(--muted);padding:.4rem .75rem;font:inherit;font-size:.82rem;font-weight:600;margin-bottom:-1px;cursor:pointer}.everroux-tabs .file-menu__trigger:hover{color:var(--text)}.file-menu{position:relative;margin-right:.35rem}.file-menu__panel{position:absolute;top:calc(100% + 1px);left:0;z-index:300;min-width:12rem;padding:.35rem 0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.file-menu__panel[hidden]{display:none!important}.file-menu__item{display:block;width:100%;padding:.45rem .85rem;border:none;background:none;text-align:left;font:inherit;font-size:.85rem;color:var(--text);cursor:pointer}.file-menu__item:hover,.file-menu__item:focus-visible{background:var(--accent-soft);color:var(--accent);outline:none}.file-menu__item:disabled,.file-menu__item--muted{opacity:.55;cursor:default}.file-menu__separator{height:1px;margin:.35rem 0;background:var(--border)}.file-menu__label{padding:.25rem .85rem .15rem;font-size:.72rem;font-weight:600;letter-spacing:.02em;text-transform:uppercase;color:var(--muted)}.file-menu__status{margin:.35rem .85rem .25rem;font-size:.75rem;line-height:1.35;color:var(--muted)}.file-menu__recent{max-height:12rem;overflow:auto}.app--dark .file-menu__item:hover,.app--dark .file-menu__item:focus-visible{background:#d9770626;color:var(--copper)}.everroux-main{flex:1;width:min(100%,var(--er-layout-web-max, 1600px));margin:0 auto;padding:var(--er-page-margin, 12px);box-sizing:border-box}.everroux-app[data-application-platform=desktop]{height:100%;max-height:100%;min-height:100%;overflow:hidden}.everroux-app[data-application-platform=desktop] .everroux-main,.everroux-app[data-application-platform=desktop] .er-layout-workspace,[data-application-platform=desktop] .er-layout-workspace{width:100%;max-width:none;margin-inline:0;padding-left:var(--er-workspace-gutter, 20px);padding-right:var(--er-workspace-gutter, 20px);box-sizing:border-box;flex:1 1 auto;min-width:0;min-height:0;overflow:auto}.everroux-app[data-application-platform=web] .everroux-main{width:min(100%,var(--er-layout-web-max, 1600px));max-width:var(--er-layout-web-max, 1600px);margin:0 auto}.er-layout-workspace{width:100%;min-width:0}.er-layout-reading{width:100%;max-width:var(--er-layout-reading-max, 42rem);margin-inline:auto}.everroux-footer{padding:.4rem .75rem;border-top:1px solid var(--border);font-size:var(--er-type-fine, 11px);color:var(--muted);background:var(--surface)}.everroux-about-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:400;display:flex;align-items:center;justify-content:center;background:#00000073}.everroux-about-backdrop[hidden]{display:none!important}.everroux-about{width:min(420px,calc(100vw - 2rem));max-height:min(80vh,560px);overflow:auto;padding:var(--er-card-pad, 8px) 1rem;background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow)}.everroux-about h2{margin:0 0 .5rem;font-size:var(--er-type-section);color:var(--blue)}:root{--er-engineering-blue: var(--blue, #1f4e79);--er-construction-copper: var(--copper, #d97706);--er-slate-gray: var(--slate, var(--muted, #4f5b66));--er-sage: var(--ee-sage, #547d63);--er-wood: var(--wood, #8b7355);--er-light-gray: var(--light-gray, #e6e8eb);--er-dark-slate: var(--dark-slate, #2d3436)}:root,[data-density=ultra],.er-density-ultra{--er-density: ultra;--er-input-height: 26px;--er-btn-height: 26px;--er-section-header-height: 24px;--er-section-pad: 6px;--er-card-pad: 6px;--er-page-margin: 8px;--er-section-gap: 8px;--er-label-gap: 2px;--er-grid-gap: 4px;--er-field-num-width: 80px;--er-radius-dense: 3px;--er-dialog-pad: 8px;--er-control-gap: 4px;--er-space-1: 2px;--er-space-2: 4px;--er-space-3: 4px;--er-space-4: 6px;--er-space-5: 8px;--er-space-6: 8px;--er-workspace-gutter: 20px;--er-layout-reading-max: 42rem;--er-layout-web-max: 1600px;--er-type-app-title: 18px;--er-type-section: 12px;--er-type-subhead: 12px;--er-type-label: 11px;--er-type-value: 12px;--er-type-result: 12px;--er-type-table: 11px;--er-type-note: 11px;--er-type-fine: 10px;--er-type-unit: 10px}[data-density=compact],.er-density-compact{--er-density: compact;--er-input-height: 30px;--er-btn-height: 30px;--er-section-header-height: 28px;--er-section-pad: 8px;--er-card-pad: 8px;--er-page-margin: 12px;--er-section-gap: 10px;--er-label-gap: 2px;--er-grid-gap: 6px;--er-field-num-width: 88px;--er-radius-dense: 3px;--er-dialog-pad: 10px;--er-control-gap: 4px;--er-space-1: 2px;--er-space-2: 4px;--er-space-3: 6px;--er-space-4: 8px;--er-space-5: 10px;--er-space-6: 12px;--er-type-app-title: 20px;--er-type-section: 13px;--er-type-subhead: 13px;--er-type-label: 12px;--er-type-value: 13px;--er-type-result: 13px;--er-type-table: 12px;--er-type-note: 12px;--er-type-fine: 11px;--er-type-unit: 11px}[data-density=comfort],.er-density-comfort{--er-density: comfort;--er-input-height: 36px;--er-btn-height: 36px;--er-section-header-height: 32px;--er-section-pad: 12px;--er-card-pad: 12px;--er-page-margin: 12px;--er-section-gap: 12px;--er-label-gap: 4px;--er-grid-gap: 10px;--er-field-num-width: 100px;--er-dialog-pad: 12px;--er-control-gap: 6px;--er-space-1: 2px;--er-space-2: 4px;--er-space-3: 10px;--er-space-4: 12px;--er-space-5: 12px;--er-space-6: 12px;--er-type-app-title: 22px;--er-type-section: 14px;--er-type-subhead: 13px;--er-type-label: 12px;--er-type-value: 14px;--er-type-result: 14px;--er-type-table: 13px;--er-type-note: 12px;--er-type-fine: 11px;--er-type-unit: 11px}.er-section-title{margin:0;font-size:var(--er-type-section);font-weight:var(--er-weight-semibold, 600);line-height:1.25;color:var(--blue, #1f4e79)}.er-subhead{margin:0;font-size:var(--er-type-subhead);font-weight:var(--er-weight-semibold, 600);line-height:1.25}.er-label{font-size:var(--er-type-label);font-weight:var(--er-weight-medium, 500);line-height:1.2;color:var(--text, #1a2e34)}.er-value{font-size:var(--er-type-value);font-weight:var(--er-weight-regular, 400)}.er-result{font-size:var(--er-type-result);font-weight:var(--er-weight-medium, 500)}.er-table{font-size:var(--er-type-table)}.er-note{font-size:var(--er-type-note);color:var(--muted, #4f5b66)}.er-fine,.er-unit{font-size:var(--er-type-unit);color:var(--muted, #4f5b66);font-weight:var(--er-weight-regular, 400)}.er-page{margin:0;padding:var(--er-page-margin);box-sizing:border-box}.er-card{padding:var(--er-card-pad);background:var(--surface, #fff);border:1px solid var(--border, #c5ccc6);border-radius:var(--er-radius-dense, 3px)}.er-stack{display:flex;flex-direction:column;gap:var(--er-section-gap)}.er-section{display:flex;flex-direction:column;gap:var(--er-section-pad);min-width:0}.er-section__title{display:flex;align-items:center;gap:.35rem;min-height:var(--er-section-header-height);margin:0;padding:0 0 2px;border-bottom:1px solid var(--border, #c5ccc6);font-size:var(--er-type-section);font-weight:var(--er-weight-semibold, 600);line-height:1.2;color:var(--blue, #1f4e79)}.er-section__body{display:flex;flex-direction:column;gap:var(--er-grid-gap);min-width:0}.er-eng-grid{display:grid;grid-template-columns:repeat(1,minmax(0,1fr));gap:var(--er-grid-gap);align-items:start}@media(min-width:640px){.er-eng-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(min-width:1100px){.er-eng-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media(min-width:1600px){.er-eng-grid{grid-template-columns:repeat(5,minmax(0,1fr))}}.er-eng-grid__span-2{grid-column:span 2}.er-eng-grid__span-all{grid-column:1 / -1}.er-field{display:flex;flex-direction:column;gap:var(--er-label-gap);min-width:0}.er-field--inline{flex-direction:row;align-items:center;gap:.4rem}.er-field--inline>.er-label,.er-field--inline>label{flex:0 1 auto;white-space:nowrap;margin:0;font-size:var(--er-type-label);font-weight:var(--er-weight-medium, 500)}.er-field__control{display:inline-flex;align-items:center;gap:.25rem;min-width:0}.er-input,.er-field input[type=text],.er-field input[type=number],.er-field input:not([type]),.er-field select,.er-field textarea,input.er-input,select.er-input,textarea.er-input{box-sizing:border-box;height:var(--er-input-height);min-height:var(--er-input-height);padding:0 .4rem;font-family:inherit;font-size:var(--er-type-value);line-height:1.2;color:var(--text, #1a2e34);background:var(--surface, #fff);border:1px solid var(--border, #c5ccc6);border-radius:var(--er-radius-dense, 3px)}.er-field textarea,textarea.er-input{height:auto;min-height:calc(var(--er-input-height) * 2);padding:.35rem .4rem}.er-input--num,.er-field--num input,input.er-input--num{width:var(--er-field-num-width);max-width:100%;text-align:right;font-variant-numeric:tabular-nums}.er-input:focus,.er-field input:focus,.er-field select:focus,.er-field textarea:focus{outline:2px solid var(--copper, #d97706);outline-offset:0;border-color:var(--copper, #d97706)}.er-btn{box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;height:var(--er-btn-height);min-height:var(--er-btn-height);padding:0 .65rem;font-family:inherit;font-size:var(--er-type-label);font-weight:var(--er-weight-medium, 500);line-height:1;color:var(--text, #1a2e34);background:var(--surface, #fff);border:1px solid var(--border, #c5ccc6);border-radius:var(--er-radius-dense, 3px);cursor:pointer}.er-btn:hover{border-color:var(--blue, #1f4e79);color:var(--blue, #1f4e79)}.er-btn--primary{background:var(--blue, #1f4e79);border-color:var(--blue, #1f4e79);color:#fff}.er-btn--primary:hover{filter:brightness(1.08);color:#fff}.er-btn--toolbar{padding:0 .5rem;font-weight:var(--er-weight-regular, 400)}.er-density-control{display:inline-flex;align-items:stretch;border:1px solid rgb(255 255 255 / .35);border-radius:4px;overflow:hidden}.er-density-control__btn{margin:0;padding:.2rem .45rem;border:none;border-right:1px solid rgb(255 255 255 / .25);background:#ffffff1f;color:#fff;font:inherit;font-size:.7rem;font-weight:600;cursor:pointer;line-height:1.2}.er-density-control__btn:last-child{border-right:none}.er-density-control__btn:hover{background:#ffffff38}.er-density-control__btn[aria-pressed=true]{background:var(--copper, #d97706);color:#fff}.er-info{display:inline-flex;align-items:center;justify-content:center;width:1.1rem;height:1.1rem;margin:0;padding:0;border:1px solid var(--muted, #4f5b66);border-radius:50%;background:transparent;color:var(--muted, #4f5b66);font-size:.65rem;font-weight:700;line-height:1;cursor:help}.er-info:hover,.er-info:focus-visible{border-color:var(--blue, #1f4e79);color:var(--blue, #1f4e79);outline:none}.er-table-wrap{overflow:auto;border:1px solid var(--border, #c5ccc6);border-radius:var(--er-radius-dense, 3px)}.er-data-table{width:100%;border-collapse:collapse;font-size:var(--er-type-table)}.er-data-table th,.er-data-table td{padding:.2rem .4rem;border-bottom:1px solid var(--border, #c5ccc6);text-align:left;white-space:nowrap}.er-data-table th{font-weight:var(--er-weight-semibold, 600);background:var(--accent-soft, #e6ede8);color:var(--blue, #1f4e79)}.er-data-table td.er-num,.er-data-table th.er-num{text-align:right;font-variant-numeric:tabular-nums}.app--dark .er-data-table th{background:var(--accent-soft, #3d4549)}input[type=number].er-input::-webkit-outer-spin-button,input[type=number].er-input::-webkit-inner-spin-button,.er-field input[type=number]::-webkit-outer-spin-button,.er-field input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}input[type=number].er-input,.er-field input[type=number]{-moz-appearance:textfield;-webkit-appearance:textfield;appearance:textfield}.er-nav-panel{display:flex;flex-direction:column;gap:var(--er-space-4, 6px);min-width:0;min-height:0;overflow:auto;padding:var(--er-card-pad, 6px);background:var(--surface, #fff);border:1px solid var(--border, #c5ccc6);border-radius:var(--er-radius-dense, 3px)}.er-property-panel{display:flex;flex-direction:column;gap:var(--er-space-3, 4px);min-width:0;padding:var(--er-card-pad, 6px);background:var(--surface, #fff);border:1px solid var(--border, #c5ccc6);border-radius:var(--er-radius-dense, 3px)}.er-property-grid{display:grid;grid-template-columns:minmax(5rem,40%) minmax(0,1fr);gap:var(--er-space-1, 2px) var(--er-space-2, 4px);align-items:center;font-size:var(--er-type-table, 11px)}.er-property-grid__label{margin:0;font-size:var(--er-type-label, 11px);font-weight:var(--er-weight-medium, 500);color:var(--text, #1a2e34);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.er-property-grid__value{min-width:0;font-size:var(--er-type-value, 12px);font-variant-numeric:tabular-nums}.er-report-preview{display:flex;flex-direction:column;min-width:0;min-height:0;overflow:auto;padding:var(--er-page-margin, 8px);background:var(--bg, #f4f6f5);border:1px solid var(--border, #c5ccc6);border-radius:var(--er-radius-dense, 3px)}.er-group-box{display:flex;flex-direction:column;gap:var(--er-space-3, 4px);padding:var(--er-card-pad, 6px);background:var(--surface, #fff);border:1px solid var(--border, #c5ccc6);border-radius:var(--er-radius-dense, 3px)}.er-group-box__title{margin:0;padding:0 0 2px;border-bottom:1px solid var(--border, #c5ccc6);font-size:var(--er-type-section, 12px);font-weight:var(--er-weight-semibold, 600);color:var(--blue, #1f4e79);line-height:1.2}.er-group-box__body{display:flex;flex-direction:column;gap:var(--er-grid-gap, 4px);min-width:0}.er-warning-banner{display:flex;align-items:flex-start;gap:var(--er-space-2, 4px);padding:var(--er-space-2, 4px) var(--er-space-3, 4px);font-size:var(--er-type-note, 11px);line-height:1.3;color:var(--dark-slate, #2d3436);background:#fef3c7;border:1px solid var(--copper, #d97706);border-radius:var(--er-radius-dense, 3px)}.er-warning-banner--error{background:#fee2e2;border-color:#b91c1c;color:#7f1d1d}.er-warning-banner--info{background:#e8f0f7;border-color:var(--blue, #1f4e79);color:var(--blue, #1f4e79)}.er-warning-banner__icon{flex:0 0 auto;font-weight:700}.er-warning-banner__body{flex:1 1 auto;min-width:0}.app--dark .er-warning-banner{background:#3d3420;color:#fde68a}.app--dark .er-warning-banner--error{background:#3f1d1d;color:#fecaca}.app--dark .er-warning-banner--info{background:#1a2e3d;color:#bfdbfe}.er-result-card{display:flex;flex-direction:column;gap:var(--er-space-1, 2px);padding:var(--er-card-pad, 6px);background:var(--surface, #fff);border:1px solid var(--border, #c5ccc6);border-left:3px solid var(--blue, #1f4e79);border-radius:var(--er-radius-dense, 3px)}.er-result-card--pass{border-left-color:var(--ee-sage, #547d63)}.er-result-card--fail{border-left-color:#b91c1c}.er-result-card--warn{border-left-color:var(--copper, #d97706)}.er-result-card__title{margin:0;font-size:var(--er-type-label, 11px);font-weight:var(--er-weight-semibold, 600);color:var(--muted, #4f5b66)}.er-result-card__value{margin:0;font-size:var(--er-type-result, 12px);font-weight:var(--er-weight-medium, 500);font-variant-numeric:tabular-nums;color:var(--text, #1a2e34)}.er-result-card__meta{margin:0;font-size:var(--er-type-fine, 10px);color:var(--muted, #4f5b66)}.er-search{display:inline-flex;align-items:center;gap:var(--er-space-1, 2px);min-width:0;height:var(--er-input-height, 26px)}.er-search__input{flex:1 1 auto;min-width:6rem;box-sizing:border-box;height:var(--er-input-height, 26px);padding:0 .4rem;font:inherit;font-size:var(--er-type-value, 12px);border:1px solid var(--border, #c5ccc6);border-radius:var(--er-radius-dense, 3px);background:var(--surface, #fff);color:var(--text, #1a2e34)}.er-search__input:focus{outline:2px solid var(--copper, #d97706);outline-offset:0;border-color:var(--copper, #d97706)}.er-search__clear{flex:0 0 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