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/* Mobile form accessibility and reflow, revision 3 */
[hidden]{display:none!important}.field{scroll-margin-top:100px}.field textarea{font:inherit;width:100%;min-height:106px;resize:vertical;border:1px solid #c7c7cf;border-radius:11px;padding:13px 12px;background:white;color:var(--ink);line-height:1.6}.field textarea:focus-visible{outline:3px solid #0071e3;outline-offset:4px}.signed-input{position:relative;min-width:0}.signed-input input{padding-right:57px}.sign-toggle{position:absolute;right:5px;top:4px;bottom:4px;min-width:44px;min-height:44px;border:0;border-left:1px solid #dedee3;border-radius:0 7px 7px 0;background:#f5f5f7;font-size:1.25rem;color:#005fbd}.sign-toggle:hover{background:#e9f2ff}.field-error{font-size:.875rem;line-height:1.55;color:#a2221b;margin:10px 0 0;overflow-wrap:anywhere}.form-error-summary{font-size:.9375rem;line-height:1.6;color:#9b211b;background:#fff2f0;border:1px solid #edc6c0;border-radius:12px;margin:18px 0 0;padding:15px;scroll-margin-top:95px}.field input[aria-invalid=true],.field textarea[aria-invalid=true],.field select[aria-invalid=true]{border:2px solid #b3261e}.result-section{scroll-margin-top:95px}.result strong.prose-result{font-size:1.35rem;line-height:1.5;letter-spacing:-.02em;overflow-wrap:anywhere}.result small,.formula,.example-box p,.note-box p{overflow-wrap:anywhere}.schedule-hint{font-size:.8125rem;color:#55555d;line-height:1.55;margin:18px 0 0}#schedule{overscroll-behavior:contain;-webkit-overflow-scrolling:touch;scrollbar-gutter:stable}#schedule:focus-visible{outline:3px solid var(--blue);outline-offset:4px}#schedule caption{text-align:left;padding:12px 0;font-weight:600;color:#44444b}.keys button{min-width:0;padding:8px 3px}.keys [data-key="sqrt"]{font-size:.875rem}.section-head>div,.section-head h2{min-width:0}.result-actions button{white-space:normal}.large-text .calculator-foot{flex-wrap:wrap;font-size:.75rem}.large-text .calculator-foot .favorite{font-size:.8125rem}.result:focus:not(:focus-visible){outline:none}
@media(max-width:780px){header{gap:12px;min-height:72px}.text-size{min-width:44px;min-height:44px;justify-content:center}.mobile-menu summary{min-height:50px}.mobile-menu .side-link{min-height:48px}.result-actions .secondary{min-height:48px}.favorite-save{min-height:44px}.guide .eyebrow{font-size:.8125rem}.field label{overflow-wrap:anywhere}.tabs a{min-height:46px}.content summary{min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:15px}.content summary:after{content:'+';font-size:1.4rem;color:#666;flex-shrink:0}.content details[open] summary:after{content:'−'}.content summary::-webkit-details-marker{display:none}.content summary{list-style:none}.section-head{flex-wrap:wrap}.section-head>a{min-height:44px;display:inline-flex;align-items:center}.calculator-foot{flex-wrap:wrap;align-items:center;font-size:.75rem}.calculator-foot .favorite{min-height:44px;font-size:.8125rem}.field textarea{font-size:1rem;min-height:116px}.result-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}footer nav a{min-height:44px;display:inline-flex;align-items:center}.primary{min-height:54px}.reset-example{min-height:48px}.large-text .mini-label{display:none}}
@media(max-width:500px){header nav{display:none!important}.text-size{margin-left:auto;padding:8px 12px}.text-size-label{display:inline;font-size:.75rem;letter-spacing:-.01em}.text-size>span:first-child{font-size:18px}.brand{flex-shrink:0}main,.home-page main{padding-left:16px;padding-right:16px}.panel{padding:23px 17px}.tool-heading h1{font-size:2.25rem}.field input,.field select,.field textarea{font-size:1.0625rem;min-height:56px}.field textarea{min-height:126px}.field label{font-size:.9375rem}.large-text .form-grid{grid-template-columns:minmax(0,1fr)}.large-text .mobile-menu nav{grid-template-columns:1fr}.large-text .mobile-menu .side-link{font-size:1rem}.large-text .text-size-label{display:none}.result strong.prose-result{font-size:1.2rem}.result-actions{grid-template-columns:1fr}.result-actions .secondary{font-size:.9375rem;min-height:50px}.keys button{min-height:54px}.result-heading,.panel-title{font-size:1rem}.form-help{font-size:.875rem}.hero h1{font-size:2.75rem}.large-text .hero h1{font-size:2.35rem}.search input{font-size:1rem}.search{min-height:60px}.section-head .catalog-count{white-space:normal}.mobile-menu summary{font-size:.9375rem}.sign-toggle{top:5px;bottom:5px}.large-text .keys button{font-size:1.05rem}.large-text .keys [data-key="sqrt"]{font-size:.8125rem}}
@media(max-width:350px){.text-size-label{display:none}.text-size{padding:8px 12px}.brand{font-size:17px}.mobile-menu nav{grid-template-columns:1fr}.featured-tools{grid-template-columns:1fr}.featured-tools .tool-card:nth-child(n+3){display:flex}.hero h1{font-size:2.4rem}.panel-title{flex-wrap:wrap}.panel-title .mini-label{margin-left:0}.tool-heading h1{font-size:2.15rem}}
@media(max-width:780px){html{scroll-padding-top:88px}.result-section{scroll-margin-top:0}}
.tool-layout>*{min-width:0}.panel{min-width:0}#schedule{width:100%;max-width:100%;min-width:0}

@media(max-width:780px){.brand{min-height:44px}.quick{align-items:center}.quick a{min-height:44px;min-width:44px;display:inline-flex;align-items:center;justify-content:center}.breadcrumbs a{min-height:44px;display:inline-flex;align-items:center}.breadcrumbs{align-items:center;row-gap:0}.large-text .result-heading{flex-wrap:wrap}}

/* Metal and electrical workflows */
.use-case{border:1px solid #dce7f6;background:#edf4fe;border-radius:20px;padding:23px 26px;margin:0 0 28px}.use-case .eyebrow{color:#0066bb}.use-case p{font-size:1rem;line-height:1.75;max-width:1000px;margin:0;color:#394b60}.dimension-details{margin-top:22px;border:1px solid #dbe1e9;background:#fafcff;border-radius:15px;overflow:hidden}.dimension-details>summary{cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:15px;min-height:48px;padding:13px 16px;font-size:.875rem;font-weight:500;color:#3e566c;list-style:none}.dimension-details>summary::-webkit-details-marker{display:none}.dimension-diagram{margin:0;padding:8px 16px 15px}.dimension-diagram svg{display:block;width:100%;max-width:380px;margin:auto;height:auto;overflow:visible;fill:#dbe9fa;stroke:#3f77af;stroke-width:2;stroke-linejoin:round}.dimension-diagram svg .void{fill:#fafcff}.dimension-diagram svg .dimension{fill:none;stroke:#4777a8;stroke-width:1;marker-start:url(#dimension-arrow);marker-end:url(#dimension-arrow)}.dimension-diagram svg .leader{fill:none;stroke:#4777a8;stroke-width:1.2}.dimension-diagram svg .wire{fill:none;stroke-width:4}.dimension-diagram svg text{font:18px -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;text-anchor:middle;fill:#24527f;stroke:none}.dimension-diagram figcaption{font-size:.875rem;line-height:1.6;color:#3f5367}.dimension-diagram figcaption>span{display:block;font-size:.75rem;color:#717b87;margin-top:7px}.dimension-legend{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:0;padding:0 16px 17px}.dimension-legend>div{min-width:0;padding-top:9px;border-top:1px solid #dce5f1}.dimension-legend dt{font-size:.75rem;color:#607185;line-height:1.5}.dimension-legend dd{font-size:.9375rem;color:#24486d;margin:4px 0 0;overflow-wrap:anywhere}.field-help{font-size:.8125rem;color:#646974;line-height:1.65;margin:10px 0 0}.industry-actions,.bill-tools{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.industry-actions:empty{display:none}.industry-actions .secondary{display:inline-flex;align-items:center;justify-content:center;text-align:center;white-space:normal;line-height:1.5}.method-sources{margin:20px 0 30px;padding:22px;background:#f5f7fa;border-radius:14px}.method-sources a{color:#0066bb;text-decoration:underline;text-underline-offset:3px;overflow-wrap:anywhere}.method-sources ul{font-size:.875rem;line-height:1.8;margin:10px 0;padding-left:20px}.method-sources p{font-size:.8125rem;margin:14px 0 0}.bill-title{display:block;font-size:1rem;font-weight:600;margin-bottom:18px}.bill-row{border:1px solid #d9dfe7;border-radius:15px;margin:0 0 20px;padding:18px;min-width:0}.bill-row legend{font-size:.875rem;color:#3b5674;font-weight:600;padding:0 7px}.bill-row-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 12px}.bill-row-grid>.field:first-child{grid-column:1/-1}.bill-remove{min-height:44px;border:0;background:transparent;padding:9px 0;font-size:.8125rem;color:#a34034;margin-top:12px;text-align:left}.bill-remove:disabled{color:#83858b}.bill-tools .secondary{min-height:46px}.bill-editor{min-width:0}.bill-row .field input{font-size:.9375rem}.large-text .dimension-legend{grid-template-columns:1fr}.large-text .bill-row-grid{grid-template-columns:1fr}.large-text .field-help{font-size:.875rem}.large-text .dimension-diagram figcaption>span{font-size:.8125rem}
@media(max-width:780px){.use-case{padding:22px;margin-bottom:25px}.industry-actions .secondary{min-height:48px}.dimension-details summary{min-height:50px}.dimension-diagram{padding-left:12px;padding-right:12px}.bill-tools .secondary{min-height:48px}.method-sources li{margin-bottom:12px}.method-sources a{display:inline-block;min-height:44px;padding:8px 0}}
@media(max-width:500px){.use-case{padding:20px;border-radius:17px}.use-case p{font-size:.9375rem}.dimension-details>summary{font-size:.9375rem;padding:13px}.dimension-diagram figcaption{font-size:.9375rem}.dimension-diagram figcaption>span{font-size:.8125rem}.dimension-legend{grid-template-columns:1fr 1fr;padding:0 13px 15px;gap:13px 10px}.dimension-legend dt{font-size:.8125rem}.dimension-legend dd{font-size:1rem}.field-help{font-size:.875rem}.industry-actions,.bill-tools{display:grid;grid-template-columns:1fr}.industry-actions .secondary,.bill-tools .secondary{width:100%;font-size:.875rem;min-height:50px}.bill-row{padding:17px 13px}.bill-row-grid{grid-template-columns:minmax(0,1fr);gap:17px}.bill-row .field input{font-size:1.0625rem}.bill-remove{min-height:48px;font-size:.875rem}.bill-editor .field label{font-size:.875rem}.large-text .dimension-legend{grid-template-columns:1fr}.method-sources{padding:20px 16px}.method-sources ul{font-size:.9375rem}}
@media print{.dimension-details{break-inside:avoid}.industry-actions,.bill-tools,.bill-remove{display:none}.dimension-diagram svg{max-width:250px}.use-case{background:white}.bill-row{break-inside:avoid}}

.bill-tools{margin:0 0 22px}.bill-tools .primary{min-height:48px}.bill-editor .field:first-child input{font-size:1rem}
@media(max-width:500px){#schedule[aria-label="Ведомость закупки"]{max-height:380px}#schedule[aria-label="Ведомость закупки"] table{white-space:normal;margin-top:12px}#schedule[aria-label="Ведомость закупки"] thead{position:absolute;width:1px;height:1px;clip-path:inset(50%);overflow:hidden}#schedule[aria-label="Ведомость закупки"] tbody{display:grid;gap:12px}#schedule[aria-label="Ведомость закупки"] tr{display:block;border:1px solid #dde3eb;border-radius:12px;padding:12px;background:#fafcff}#schedule[aria-label="Ведомость закупки"] td{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:10px;border:0;padding:8px 0;text-align:right;font-size:.8125rem;overflow-wrap:anywhere}#schedule[aria-label="Ведомость закупки"] td:before{content:attr(data-label);color:#69717d;text-align:left}#schedule[aria-label="Ведомость закупки"] td:first-child{display:block;text-align:left;font-weight:600}#schedule[aria-label="Ведомость закупки"] td:first-child:before{display:none}.bill-tools .primary{font-size:.9375rem}}