@font-face{font-family:Montserrat;src:url('/assets/fonts/montserrat-400.woff') format('woff');font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:Montserrat;src:url('/assets/fonts/montserrat-500.woff') format('woff');font-style:normal;font-weight:500;font-display:swap}
@font-face{font-family:Montserrat;src:url('/assets/fonts/montserrat-600.woff') format('woff');font-style:normal;font-weight:600;font-display:swap}
@font-face{font-family:Montserrat;src:url('/assets/fonts/montserrat-700.woff') format('woff');font-style:normal;font-weight:700;font-display:swap}

:root{
  --clay:#B64B2C;
  --clay-dark:#923D25;
  --graphite:#263438;
  --muted:#5F6B70;
  --line:#E1E7E8;
  --paper:#FFFFFF;
  --clay-tint:#FFF3ED;
  --green:#35664F;
  --green-tint:#F0F6F2;
  --red:#A62F27;
  --page:1200px;
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:#FFFFFF;color:var(--graphite);font-family:Montserrat,Arial,sans-serif;font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
button,a,input,select,summary{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
button{cursor:pointer;border:0}
a{color:inherit;text-underline-offset:4px}
a:hover{color:var(--clay)}
button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--clay);outline-offset:3px}
input:focus,select:focus{border-color:var(--clay)}
button[disabled]{cursor:default;opacity:.5}
h1,h2,h3,p,figure{margin:0}
h1,h2,h3{font-weight:600;line-height:1.3;letter-spacing:normal}
h1{font-size:clamp(23px,6.45vw,34px);line-height:1.2}
h2{font-size:26px;line-height:1.35}
h3{font-size:17px}
p+p{margin-top:14px}
strong{font-weight:600}
.icon{width:20px;height:20px;stroke:currentColor;stroke-width:1.7;fill:none;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.svg-library{position:absolute;width:0;height:0;overflow:hidden}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
[hidden]{display:none!important}
.skip-link{position:fixed;top:8px;left:12px;transform:translateY(-200%);z-index:99;padding:10px 16px;background:var(--graphite);color:white}
.skip-link:focus{transform:translateY(0)}

/* White is the base. Accent backgrounds belong to a few useful surfaces. */
.site-header{background:white;border-bottom:1px solid var(--line)}
.header-inner,.page-shell,.footer-inner{width:calc(100% - 36px);max-width:var(--page);margin:0 auto}
.header-inner{height:58px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{display:inline-flex;align-items:center;gap:8px;color:var(--graphite);text-decoration:none;font-size:17px;font-weight:700;line-height:1.2;letter-spacing:-.025em;white-space:nowrap}
.brand-mark{width:35px;height:26px;color:var(--clay);flex-shrink:0}
.brand-pro{color:var(--clay)}
.desktop-nav{display:none}
.icon-button{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;padding:10px;background:transparent;border-radius:7px}
.menu-toggle{margin-right:-8px}
.mobile-nav{padding:8px 18px 18px;border-top:1px solid var(--line);background:white}
.mobile-nav a{display:block;text-decoration:none;padding:10px 0;font-size:14px}
.page-intro{padding:22px 0 18px}
.intro-eyebrow,.intro-aside{display:none}
.intro-copy{margin-top:9px;max-width:740px;font-size:13px;line-height:1.65;color:var(--muted)}
.eyebrow{font-size:13px;font-weight:600;line-height:1.5;letter-spacing:normal;text-transform:none;color:var(--clay)}

.calculator-board{display:grid;grid-template-columns:minmax(0,1fr);border:1px solid var(--line);border-radius:12px;overflow:hidden;background:white;scroll-margin-top:18px}
.estimate-form{padding:16px;min-width:0}
#form-fields{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);column-gap:12px}
#form-fields>*{grid-column:1 / -1}
.form-toolbar{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:14px}
.input-modes{display:flex;gap:14px;min-width:0}
.input-modes button{background:transparent;border-bottom:2px solid transparent;color:var(--muted);padding:6px 0;font-size:12px;font-weight:500;line-height:1.6;white-space:nowrap;min-height:36px}
.input-modes button[aria-pressed=true]{color:var(--clay);border-color:var(--clay);font-weight:600}
.long-mode{display:none}
.short-mode{display:inline}
.unit-toggle{display:flex;align-items:center;flex-shrink:0;padding:2px;border:1px solid var(--line);border-radius:7px;background:white}
.unit-toggle button{height:30px;min-width:36px;padding:0 7px;border-radius:5px;background:transparent;font-size:11px;font-weight:500;line-height:1}
.unit-toggle button[aria-pressed=true]{background:var(--clay-tint);color:var(--clay);font-weight:600}
.field-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;margin-top:14px}
.form-toolbar+.field-row{margin-top:0}
.field-row.block-row{grid-template-columns:minmax(0,1.45fr) minmax(0,1fr)}
.single-field{grid-template-columns:minmax(0,1fr)}
.field{min-width:0}
.field label,.field-label{display:flex;align-items:center;justify-content:space-between;gap:6px;margin-bottom:6px;font-size:12px;font-weight:500;line-height:1.5}
.field label small,.field-label small{font-size:11px;color:var(--muted);font-weight:400}
.block-row .field label small{display:none}
.input-wrap{position:relative;display:flex;align-items:center}
input,select{width:100%;height:44px;min-width:0;padding:9px 11px;border:1px solid #7D8B8F;border-radius:7px;background:white;font-size:16px;line-height:1.4;font-variant-numeric:tabular-nums}
.input-wrap input{padding-right:36px}
.input-suffix{position:absolute;right:11px;pointer-events:none;color:var(--muted);font-size:12px}
input[type=number]{appearance:textfield;-moz-appearance:textfield}
input::-webkit-outer-spin-button,input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
select{appearance:none;font-size:12px;padding-right:28px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='m1 1 5 5 5-5' fill='none' stroke='%235F6B70' stroke-width='1.4'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat}
.input-pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:7px}
.input-pair .input-wrap input{padding-right:26px;padding-left:8px}
.input-pair .input-suffix{right:7px}
.field-note,.help-text{font-size:12px;line-height:1.7;color:var(--muted);margin-top:9px}
.field-note a{color:var(--clay)}
#form-fields>.form-details{grid-column:1;margin-top:16px}
.form-details>summary{display:flex;align-items:center;justify-content:space-between;gap:6px;min-height:44px;list-style:none;cursor:pointer;font-size:12px;line-height:1.6;font-weight:500}
.form-details>summary .icon{width:16px;height:16px;color:var(--clay)}
.form-details>summary::-webkit-details-marker,.sketch-disclosure>summary::-webkit-details-marker,.faq-list summary::-webkit-details-marker{display:none}
.form-details[open]>summary .icon,.sketch-disclosure[open]>summary .icon,.faq-list details[open] summary .icon{transform:rotate(45deg)}
#form-fields>.form-details[open]{grid-column:1 / -1}
.options-content{padding:0 0 18px}
.option-section{padding:20px 0;border-top:1px solid var(--line)}
.option-section h3{font-size:15px;margin-bottom:12px}
.option-section .field-row{margin-top:12px}
.option-section .three-fields{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.option-section .field>select{margin-bottom:2px}
.text-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:7px 0;background:transparent;color:var(--clay);text-decoration:none;font-size:13px;font-weight:600;line-height:1.5}
.text-button:hover{color:var(--clay-dark);text-decoration:underline}
.text-button .icon{width:17px;height:17px}
.additional-wall{margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.entry-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;font-weight:600}
.entry-heading button{padding:6px 0 6px 8px;background:transparent;color:var(--muted);font-size:12px;text-decoration:underline}
.opening-entry{padding:12px 0;border-bottom:1px solid var(--line)}
.opening-entry .field-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,.7fr);gap:9px}
.opening-wall{margin-top:12px}
.check-label{display:flex;align-items:center;gap:10px;font-size:13px;line-height:1.6;cursor:pointer;margin:12px 0}
.check-label input{width:18px;height:18px;flex:0 0 auto;margin:0;accent-color:var(--clay)}
.primary-button{display:flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 14px;border-radius:7px;background:var(--clay);color:white;font-size:13px;font-weight:600;line-height:1.5}
.primary-button:hover{background:var(--clay-dark)}
#form-fields>.calculate-button{grid-column:2;align-self:start;margin-top:16px}
.calculate-button .icon{width:18px;height:18px}
.long-button{display:none}
.short-button{display:inline}
#form-fields:has(.form-details[open])>.calculate-button,#form-fields:has(.form-error:not([hidden]))>.calculate-button{grid-column:1 / -1;margin-top:0}
#form-fields:has(.form-error:not([hidden]))>.form-details{grid-column:1 / -1}
.form-error{padding:12px;margin:12px 0;background:#FFF1EF;color:var(--red);border-left:3px solid var(--red);font-size:13px;line-height:1.7}
[aria-invalid=true]{border-color:var(--red);background:#FFF8F6}
.form-guidance{display:none}

.result-panel{min-width:0;display:grid;grid-template-columns:minmax(0,1fr);grid-template-areas:'title' 'main' 'breakdown' 'equivalents' 'sketch' 'purchase' 'actions' 'note';align-content:start;padding:16px;background:var(--clay-tint);border-top:1px solid #F2DCD0}
.result-title{grid-area:title;display:flex;justify-content:space-between;align-items:center;gap:12px}
.result-title .eyebrow{font-size:13px;color:var(--graphite);font-weight:600}
.example-label{padding:3px 8px;border:1px solid #E4CBBE;border-radius:5px;font-size:11px;line-height:1.5;color:var(--muted)}
.result-main{grid-area:main;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 14px;padding:12px 0 14px}
.result-main>div:first-child{display:flex;align-items:baseline;flex-wrap:wrap;gap:10px;min-width:0}
.result-number{font-size:52px;line-height:1.05;letter-spacing:-.025em;color:var(--clay);font-weight:600;font-variant-numeric:tabular-nums;white-space:nowrap;word-break:normal;overflow-wrap:normal;flex-shrink:0}
.result-caption{font-size:13px;font-weight:500;line-height:1.6}
.result-side-note{display:flex;flex-direction:column;gap:4px;font-size:11px;line-height:1.6;color:var(--muted)}
.result-side-note>span:last-child{display:none}
.result-breakdown{grid-area:breakdown;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;padding:12px 0;border-top:1px solid #E7D4CA;border-bottom:1px solid #E7D4CA}
.result-breakdown>div{display:flex;flex-direction:column;gap:4px;min-width:0}
.result-breakdown>div>span:first-child{font-size:16px;font-weight:600;line-height:1.5;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.result-breakdown>div>span:last-child{font-size:11px;line-height:1.6;color:var(--muted)}
.equivalent-note{grid-area:equivalents;margin:8px 0;font-size:11px;line-height:1.7;color:var(--muted)}
.sketch-disclosure{grid-area:sketch;min-width:0}
.sketch-disclosure>summary{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:42px;cursor:pointer;list-style:none;font-size:12px;color:var(--muted)}
.sketch-disclosure>summary .icon{width:16px;height:16px}
.wall-figure{padding:10px 0 12px}
.wall-sketch{height:135px;display:flex;align-items:center;justify-content:center}
.wall-sketch svg{display:block;width:100%;height:100%;overflow:visible}
.wall-sketch text{font-family:Montserrat,Arial,sans-serif;font-size:15px;fill:var(--muted)}
.wall-figure figcaption{margin-top:4px;font-size:11px;line-height:1.6;color:var(--muted);text-align:center}
.purchase-results{grid-area:purchase;border-top:1px solid #E7D4CA;padding:9px 0;font-size:12px;line-height:1.7}
.purchase-line{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:3px 0}
.purchase-line strong{text-align:right;max-width:65%;overflow-wrap:anywhere}
.purchase-line small{display:block;color:var(--muted);font-size:11px}
.result-actions{grid-area:actions;display:flex;align-items:center;gap:17px;border-top:1px solid #E7D4CA;padding-top:3px}
.result-actions button{display:flex;align-items:center;gap:6px;min-height:42px;padding:7px 0;background:transparent;font-size:12px;font-weight:500;line-height:1.5}
.result-actions button .icon{width:16px;height:16px}
.result-actions button:hover{color:var(--clay)}
.result-actions .reset-button{margin-left:auto;color:var(--muted)}
.result-note{grid-area:note;margin-top:3px;font-size:11px;line-height:1.7;color:var(--muted)}
.calculator-foot{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding-top:13px;color:var(--muted);font-size:11px;line-height:1.7}
.calculator-foot p{display:flex;align-items:flex-start;gap:8px;max-width:80%}
.calculator-foot p .icon{width:16px;height:16px;margin-top:3px}
.calculator-foot a{display:inline-flex;align-items:center;gap:7px;flex-shrink:0;color:var(--clay);font-weight:600;text-decoration:none;font-size:0}
.calculator-foot a .icon{width:22px;height:22px}
.option-shortcuts{display:flex;align-items:center;flex-wrap:wrap;gap:5px 16px;padding-top:15px;font-size:12px;line-height:1.7}
.option-shortcuts>span{width:100%;color:var(--muted)}
.option-shortcuts button{min-height:44px;padding:6px 0;background:transparent;color:var(--clay);text-align:left;font-size:12px;font-weight:500;text-decoration:underline;text-underline-offset:3px}
.option-shortcuts button:hover{color:var(--clay-dark)}

.content-section{padding:46px 0;border-bottom:1px solid var(--line);scroll-margin-top:24px}
.section-heading{max-width:760px;margin-bottom:27px}
.section-heading .eyebrow{margin-bottom:10px}
.section-heading>p:last-child:not(.eyebrow){margin-top:14px;color:var(--muted);font-size:15px;line-height:1.8}
.working-grid,.measure-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:28px}
.method-steps{list-style:none;margin:0;padding:0}
.method-steps li{display:flex;align-items:flex-start;gap:15px;margin-bottom:24px}
.method-steps li:last-child{margin-bottom:0}
.step-number{display:flex;align-items:center;justify-content:center;width:32px;height:32px;flex:0 0 auto;border:1px solid #D8B7A6;border-radius:50%;color:var(--clay);font-size:13px;font-weight:600;line-height:1}
.method-steps h3{margin-bottom:9px;font-size:17px}
.method-steps p,.measurement-copy p,.project-notes p,.planning-grid p,.inline-explanation p,.materials-note p{font-size:15px;line-height:1.85;color:var(--muted)}
.formula-sheet{align-self:start;background:var(--green-tint);padding:23px;border-radius:10px}
.sheet-label{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:600;margin-bottom:16px;color:var(--green)}
.sheet-label .icon{width:19px;height:19px}
.formula-row{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;padding:13px 0;border-top:1px solid #D6E3DA;font-size:12px;line-height:1.75}
.formula-row>span{color:var(--muted)}
.formula-row strong{text-align:right;font-size:12px;font-weight:500}
.formula-total{display:flex;align-items:center;justify-content:space-between;gap:15px;padding-top:15px;margin-top:2px;border-top:1px solid #C9DCD0;font-size:13px}
.formula-total strong{font-size:35px;font-weight:600;line-height:1.2;color:var(--green)}
.formula-total small{font-size:13px;font-weight:500}
.formula-sheet>p{margin-top:18px;font-size:12px;line-height:1.85;color:var(--muted)}
.inline-explanation{margin-top:30px;padding-top:26px;border-top:1px solid var(--line);max-width:1010px}
.inline-explanation h3{margin-bottom:12px;font-size:18px}
.metric-examples{display:grid;grid-template-columns:minmax(0,1fr);gap:16px;margin:20px 0}
.metric-examples article{padding:21px;border:1px solid var(--line);border-radius:9px;background:white}
.metric-examples article h3{font-size:16px}
.metric-examples article p{font-size:14px}
.metric-examples .text-button{justify-content:flex-start;margin-top:10px}
.measure-grid{align-items:start}
.block-drawing{width:100%;max-width:540px;justify-self:center;align-self:start;padding:14px 9px;border:1px solid var(--line);border-radius:10px;background:white;color:#626D72}
.block-drawing svg{display:block;width:100%;height:auto;font-family:Montserrat,Arial,sans-serif;font-size:14px}
.block-drawing .drawing-caption{fill:var(--clay);font-size:13px;letter-spacing:normal}
.block-drawing figcaption{padding:0 16px;font-size:12px;line-height:1.8;text-align:center;color:var(--muted)}
.measurement-copy h3{margin:23px 0 10px;font-size:18px}
.measurement-copy h3:first-child{margin-top:0}
.course-checker{margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.course-checker h3{margin-top:0;margin-bottom:7px}
.course-checker>p{font-size:13px}
.course-fields{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;margin-top:15px}
.course-fields .field label{font-size:12px}
.course-unit{display:flex;align-items:center;gap:6px}
.course-unit input{min-width:0}
.course-unit select{flex:0 0 66px}
.course-checker output{display:block;margin-top:14px;color:var(--green);font-size:18px;font-weight:600;line-height:1.5}
.course-checker .help-text{font-size:12px}
.split-heading{max-width:none}
.coverage-summary{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;align-items:center;margin:8px 0 27px;padding:0 0 26px;border-bottom:1px solid var(--line)}
.module-graphic{display:flex;align-items:center;gap:12px;margin:0;max-width:500px}
.module-graphic svg{width:145px;max-width:45%;height:auto;flex:0 0 auto;color:var(--clay)}
.module-graphic text{font-family:Montserrat,Arial,sans-serif;font-size:18px;fill:var(--muted)}
.module-graphic figcaption{font-size:14px;line-height:1.8;color:var(--muted)}
.coverage-rate{display:flex;align-items:center;gap:17px}
.coverage-rate>strong{font-size:38px;line-height:1.2;font-weight:600;color:var(--clay);font-variant-numeric:tabular-nums}
.coverage-rate>span{font-size:14px;font-weight:500;line-height:1.6}
.coverage-rate small{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:2px}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:white}
table{width:100%;border-collapse:collapse;text-align:left;font-size:13px;font-variant-numeric:tabular-nums}
caption{text-align:left;padding:16px;color:var(--muted);font-size:12px;line-height:1.7;border-bottom:1px solid var(--line)}
th,td{padding:15px 16px;border-bottom:1px solid var(--line);white-space:nowrap;line-height:1.75}
th{font-size:12px;font-weight:600;color:var(--muted);background:#F7F9F8}
tbody tr:last-child td{border-bottom:0}
td:first-child{font-weight:600}
td>span{display:block;font-size:11px;color:var(--clay);font-weight:500}
.featured-row{background:var(--clay-tint)}
.table-note{font-size:12px;line-height:1.8;color:var(--muted);margin-top:15px;max-width:1050px}

.example-list{display:grid;grid-template-columns:minmax(0,1fr);gap:15px}
.example-list article{display:grid;grid-template-columns:27px minmax(0,1fr) auto;gap:9px 12px;align-items:start;padding:21px 18px;border:1px solid var(--line);border-radius:10px;background:white}
.example-index{display:flex;align-items:center;justify-content:center;width:26px;height:26px;color:var(--clay);border:1px solid #E6CDBF;border-radius:5px;font-size:12px;font-weight:500;line-height:1}
.example-list h3{font-size:16px;line-height:1.5;margin-bottom:8px}
.example-list p{font-size:13px;color:var(--muted);line-height:1.8}
.example-list article>strong{font-size:28px;line-height:1.15;font-weight:600;font-variant-numeric:tabular-nums;color:var(--graphite)}
.example-list article>strong small{display:block;margin-top:5px;font-size:11px;line-height:1.5;color:var(--muted);font-weight:400}
.example-list article>.text-button{grid-column:2 / 4;justify-self:start;margin-top:3px;min-height:36px;font-size:12px}
.project-notes{display:grid;grid-template-columns:minmax(0,1fr);gap:25px;margin-top:32px}
.project-notes h3{font-size:18px;margin-bottom:11px}
.planning-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:25px}
.planning-grid>div+div{border-top:1px solid var(--line);padding-top:25px}
.planning-grid h3{font-size:18px;margin-bottom:11px}
.materials-note{display:flex;align-items:flex-start;gap:14px;margin-top:28px;padding-top:25px;border-top:1px solid var(--line)}
.materials-note>.icon{width:28px;height:28px;margin-top:3px;color:var(--clay)}
.materials-note h3{font-size:17px;margin-bottom:10px}
.cement-note{margin-top:16px}
.download-section{display:grid;grid-template-columns:minmax(0,1fr);align-items:center;gap:24px;margin-top:38px;padding:28px 24px;background:var(--clay-tint);border-radius:12px}
.download-section .eyebrow{margin-bottom:10px}
.download-section h2{font-size:25px}
.download-section p:last-child{font-size:14px;color:var(--muted);line-height:1.85;margin-top:13px}
.download-button{display:inline-flex;align-items:center;justify-content:center;justify-self:start;gap:12px;max-width:100%;padding:15px 17px;background:var(--clay);color:white;border-radius:7px;text-decoration:none;font-size:13px;font-weight:600;line-height:1.6}
.download-button:hover{background:var(--clay-dark);color:white}
.download-button .icon{width:23px;height:23px}
.download-button small{display:block;font-size:11px;font-weight:400;margin-top:3px}
.faq-section{display:grid;grid-template-columns:minmax(0,1fr);gap:25px}
.faq-section .section-heading{margin:0}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list details:first-child{border-top:1px solid var(--line)}
.faq-list summary{display:flex;align-items:center;justify-content:space-between;gap:18px;list-style:none;cursor:pointer;padding:20px 0;font-size:15px;font-weight:500;line-height:1.75}
.faq-list summary .icon{width:18px;height:18px;color:var(--clay)}
.faq-list details>div{padding:0 25px 23px 0;font-size:14px;line-height:1.85;color:var(--muted)}
.faq-list details .text-button{margin-top:9px}
.metric-formula{max-width:1010px;margin-top:24px;font-size:14px;line-height:1.85;color:var(--muted)}
.publisher-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:26px}
.publisher-grid h3{font-size:17px;margin-bottom:11px}
.publisher-grid p{font-size:14px;line-height:1.85;color:var(--muted)}
.publisher-grid a{color:var(--clay)}
.print-summary{display:none}
.specialist-links{display:flex;align-items:center;flex-wrap:wrap;gap:12px 20px;padding:18px 0;border-bottom:1px solid var(--line);font-size:13px}
.specialist-links>span{color:var(--muted)}
.specialist-links a{display:inline-flex;align-items:center;gap:6px;color:var(--clay);min-height:44px}
.specialist-links .icon{width:16px;height:16px}
.sources-section{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;padding:40px 0 46px}
.sources-section .eyebrow{margin-bottom:10px}
.sources-section h2{font-size:25px}
.sources-section p:not(.eyebrow){font-size:14px;color:var(--muted);line-height:1.85;margin-top:14px}
.sources-section .method-version{font-size:12px!important}
.sources-section ol{list-style:none;padding:0;margin:0;counter-reset:sources}
.sources-section li{position:relative;counter-increment:sources;padding:0 0 19px 26px;font-size:13px}
.sources-section li:last-child{padding-bottom:0}
.sources-section li:before{position:absolute;left:0;top:2px;content:counter(sources) '.';color:var(--clay);font-size:12px;font-weight:500}
.sources-section li a{display:inline-flex;align-items:center;gap:9px;font-weight:500;text-decoration:underline;text-decoration-color:#BDCBCF;line-height:1.75}
.sources-section li a .icon{width:15px;height:15px}
.sources-section li>span{display:block;font-size:12px;line-height:1.8;color:var(--muted);margin-top:5px}
.site-footer{background:white;border-top:1px solid var(--line);margin-top:18px}
.footer-inner{padding:32px 0 22px}
.footer-main{display:grid;grid-template-columns:minmax(0,1fr);gap:30px}
.footer-identity{min-width:0}
.footer-identity>p{max-width:330px;font-size:12px;line-height:1.85;color:var(--muted);margin-top:13px}
.footer-email{display:inline-block;max-width:100%;font-size:12px;color:var(--clay-dark);overflow-wrap:anywhere;margin-top:12px}
.footer-nav{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px}
.footer-nav>div{min-width:0}
.footer-nav p{font-size:12px;font-weight:600;margin-bottom:7px}
.footer-nav a{display:block;width:fit-content;font-size:12px;line-height:1.7;padding:7px 0;text-decoration:none;color:var(--muted)}
.footer-nav a:hover,.footer-bottom a:hover{color:var(--clay-dark);text-decoration:underline}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;padding-top:20px;margin-top:27px;border-top:1px solid var(--line)}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:11px}
.footer-bottom a{padding:5px 0;text-decoration:none;color:var(--muted)}
.copyright{font-size:11px;color:var(--muted)}
@media(min-width:700px){.footer-main{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:50px}.footer-inner{padding-top:40px}.footer-bottom{margin-top:32px}}
.toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);z-index:20;max-width:calc(100% - 32px);width:max-content;padding:14px 18px;border-radius:8px;background:var(--graphite);color:white;font-size:13px;line-height:1.7;box-shadow:0 3px 15px #26343822}
dialog{max-width:540px;width:calc(100% - 36px);padding:25px;border:1px solid var(--line);border-radius:12px;background:white;color:var(--graphite)}
dialog::backdrop{background:#26343866}
.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.dialog-heading h2{font-size:23px}
dialog p{font-size:14px;line-height:1.85;color:var(--muted)}
dialog .primary-button{min-width:100px;margin-top:22px}

@media(min-width:600px){
  .header-inner,.page-shell,.footer-inner{width:calc(100% - 64px)}
  .estimate-form{padding:24px}
  .field label{font-size:14px}
  select{font-size:14px}
  .input-modes button{font-size:14px}
  .input-modes{gap:23px}
  .long-mode,.long-button{display:inline}
  .short-mode,.short-button{display:none}
  .unit-toggle button{font-size:12px;min-width:43px}
  .form-details>summary{font-size:14px}
  .primary-button{font-size:14px}
  .result-panel{padding:24px}
  .result-number{font-size:64px}
  .result-side-note{font-size:13px}
  .result-side-note>span:last-child{display:block}
  .result-caption{font-size:15px}
  .result-breakdown>div>span:first-child{font-size:20px}
  .result-breakdown>div>span:last-child{font-size:12px}
  .example-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric-examples{grid-template-columns:repeat(2,minmax(0,1fr))}
  .option-shortcuts>span{width:auto}
  .example-list article{grid-template-columns:25px minmax(0,1fr);gap:14px}
  .example-list article>strong{grid-column:2}
  .example-list article>strong small{display:inline;margin-left:6px}
  .example-list article>.text-button{grid-column:2}



  .formula-row,.formula-row strong{font-size:14px}
  .coverage-summary{grid-template-columns:1.3fr 1fr;gap:30px}
  .coverage-rate{justify-content:flex-end}
  .course-fields .field label{font-size:13px}
}

@media(min-width:1001px){
  body{font-size:16px}
  .header-inner{height:72px}
  .brand{font-size:20px;gap:10px}
  .brand-mark{width:41px;height:29px}
  .menu-toggle{display:none}
  .desktop-nav{display:flex;align-items:center;gap:22px;font-size:13px;font-weight:500}
  .desktop-nav a{text-decoration:none}
  .nav-download{display:flex;align-items:center;gap:8px;color:var(--clay)}
  .nav-download .icon{width:17px;height:17px}
  .mobile-nav{display:none}
  h1{font-size:38px;line-height:1.2}
  h2{font-size:31px}
  .page-intro{padding:29px 0 23px}
  .intro-copy{font-size:15px;line-height:1.75;margin-top:11px;max-width:850px}
  .calculator-board{grid-template-columns:minmax(0,1.04fr) minmax(0,1fr);border-radius:14px}
  .estimate-form{padding:24px}
  .form-toolbar{margin-bottom:18px}
  .input-modes{gap:16px}
  .input-modes button{font-size:13px}
  .field label{font-size:13px}
  .field-row{margin-top:17px;gap:15px}
  input,select{height:47px}
  select{font-size:13px}
  #form-fields>.form-details,#form-fields>.calculate-button{margin-top:21px}
  .form-details>summary{font-size:12px;min-height:47px}
  .primary-button{min-height:47px;font-size:13px;padding:11px 12px}
  .long-button{display:none}
  .short-button{display:inline}
  .form-guidance{display:flex;align-items:flex-start;gap:10px;padding-top:21px;margin-top:24px;border-top:1px solid var(--line);color:var(--muted);font-size:12px;line-height:1.85}
  .form-guidance .icon{width:18px;height:18px;margin-top:3px;color:var(--clay)}
  .option-section h3{font-size:16px}
  .option-section .field label{font-size:12px}
  .result-panel{grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-areas:'title title' 'main sketch' 'breakdown breakdown' 'equivalents equivalents' 'purchase purchase' 'actions actions' 'note note';border-top:0;border-left:1px solid #F2DCD0;padding:24px}
  .result-title .eyebrow{font-size:14px}
  .result-main{display:flex;align-items:flex-start;justify-content:center;flex-direction:column;gap:10px;padding:12px 8px 14px 0}
  .result-main>div:first-child{flex-direction:column;align-items:flex-start;gap:5px;flex-wrap:nowrap;width:100%}
  .result-number{font-size:62px}
  .result-caption{font-size:14px;max-width:none}
  .result-side-note{font-size:11px;gap:3px}
  .result-breakdown{padding:15px 0;gap:12px}
  .result-breakdown>div>span:first-child{font-size:19px}
  .result-breakdown>div>span:last-child{font-size:11px}
  .sketch-disclosure{align-self:center;padding:14px 0 10px 5px}
  .sketch-disclosure>summary{display:none}
  .wall-figure{padding:0}
  .wall-sketch{height:111px}
  .wall-sketch text{font-size:18px}
  .wall-figure figcaption{font-size:10px;line-height:1.6;margin-top:2px}
  .purchase-results{border-top:0;padding:8px 0;font-size:12px}
  .result-actions{gap:22px}
  .result-actions button{font-size:12px;min-height:42px}
  .result-note{font-size:11px;max-width:460px}
  .calculator-foot{font-size:12px;padding-top:14px;align-items:center}
  .calculator-foot a{font-size:12px}
  .calculator-foot a .icon{width:18px;height:18px}
  .content-section{padding:66px 0}
  .section-heading{margin-bottom:32px}
  .section-heading>p:last-child:not(.eyebrow){font-size:16px}
  .working-grid{grid-template-columns:minmax(0,1fr) minmax(0,.95fr);gap:44px}
  .method-steps li{gap:18px;margin-bottom:28px}
  .method-steps h3{font-size:18px}
  .formula-sheet{padding:27px}
  .formula-row,.formula-row strong{font-size:12px}
  .formula-total{font-size:14px}
  .formula-total strong{font-size:39px}
  .inline-explanation{margin-top:35px;padding-top:29px}
  .measure-grid{grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:45px}
  .block-drawing{position:sticky;top:28px;padding:25px 15px 20px}
  .block-drawing svg{font-size:14px}
  .block-drawing figcaption{font-size:12px}
  .measurement-copy h3{font-size:18px}
  .split-heading{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);align-items:end;gap:55px}
  .split-heading>p:last-child:not(.eyebrow){margin:0}
  .coverage-summary{grid-template-columns:minmax(0,1fr) minmax(0,1fr);max-width:920px;padding-bottom:28px;margin-bottom:28px}
  .module-graphic svg{width:185px}
  .module-graphic figcaption{font-size:15px;max-width:230px}
  .coverage-rate{justify-content:center}
  .coverage-rate>strong{font-size:48px}
  .coverage-rate>span{font-size:16px}
  .coverage-rate small{font-size:13px}
  table{font-size:14px}
  th,td{padding:17px 22px}
  th{font-size:13px}
  caption{font-size:13px;padding:18px 22px}
  td>span{display:inline;font-size:11px;margin-left:9px}
  .table-note{font-size:13px}
  .example-list{gap:20px}
  .example-list article{grid-template-columns:29px minmax(0,1fr) auto;padding:24px;gap:11px 15px}
  .example-list article>strong{grid-column:3;grid-row:1;font-size:31px}
  .example-list article>strong small{display:block;margin-left:0}

  .example-list h3{font-size:18px;margin-bottom:9px}
  .example-list p{font-size:14px}
  .example-list article>.text-button{font-size:13px;margin-top:4px}
  .project-notes{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:42px;margin-top:36px}
  .planning-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:31px}
  .planning-grid>div+div{padding:0 0 0 28px;border-top:0;border-left:1px solid var(--line)}
  .materials-note{margin-top:32px;padding-top:29px;max-width:1050px}
  .download-section{grid-template-columns:minmax(0,1fr) 280px;gap:42px;margin-top:48px;padding:40px}
  .download-section h2{font-size:29px}
  .download-section p:last-child{font-size:15px}
  .download-button{justify-self:stretch;padding:17px;font-size:13px}
  .faq-section{grid-template-columns:minmax(0,.8fr) minmax(0,1.5fr);gap:60px}
  .faq-section .section-heading{max-width:300px}
  .faq-list summary{font-size:16px;padding:22px 0}
  .faq-list details>div{font-size:15px}
  .publisher-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
  .sources-section{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:65px;padding:50px 0 58px}
  .sources-section h2{font-size:28px}
  .sources-section p:not(.eyebrow){font-size:14px}
  .sources-section li{font-size:14px}
  .footer-brand{font-size:18px}
}

@media(min-width:1100px){
  .header-inner,.page-shell,.footer-inner{width:calc(100% - 96px)}
  h1{font-size:40px}
  .desktop-nav{gap:30px;font-size:14px}
  .estimate-form{padding:26px 28px}
  .form-toolbar{margin-bottom:22px}
  .input-modes{gap:23px}
  .input-modes button{font-size:14px}
  .field label{font-size:14px}
  select{font-size:14px}
  .form-details>summary{font-size:13px}
  .primary-button{font-size:14px}
  .long-button{display:inline}
  .short-button{display:none}
  .result-panel{padding:26px 28px}
  .result-number{font-size:70px}
  .result-side-note{font-size:12px}
  .result-caption{font-size:15px}
  .result-title .eyebrow{font-size:15px}
  .example-label{font-size:12px}
  .wall-sketch{height:120px}
  .wall-figure figcaption{font-size:11px}
  .result-breakdown>div>span:first-child{font-size:21px}
  .result-breakdown>div>span:last-child{font-size:12px}
  .purchase-results,.result-actions button{font-size:13px}
  .result-note{font-size:12px}
  .form-guidance{font-size:13px}
  .working-grid{gap:65px}
  .formula-sheet{padding:29px}
  .formula-row,.formula-row strong{font-size:14px}
  .formula-sheet>p{font-size:13px}
  .measure-grid{gap:65px}
  .example-list article{padding:27px}
}

@media(max-width:359px){
  .header-inner,.page-shell,.footer-inner{width:calc(100% - 28px)}
  .brand{font-size:15px;gap:6px}
  .brand-mark{width:31px}
  .page-intro{padding-top:18px;padding-bottom:15px}
  h1{font-size:22px}
  .intro-copy{font-size:12px}
  .estimate-form,.result-panel{padding:14px}
  .input-modes{gap:11px}
  .input-modes button{font-size:11px}
  .unit-toggle button{padding:0 5px;min-width:32px;font-size:10px}
  .field-row{gap:10px}
  .form-details>summary{font-size:11px}
  .primary-button{font-size:12px;padding:10px}
  .result-number{font-size:46px}
  .result-caption{font-size:12px}
  .result-side-note{font-size:10px}
  .result-breakdown>div>span:last-child{font-size:10px}
  .result-actions{gap:13px}
  .result-actions button{font-size:11px}
  .example-list article{grid-template-columns:minmax(0,1fr) auto;gap:10px}
  .example-index{display:none}
  .example-list article>.text-button{grid-column:1 / -1}
  .formula-row,.formula-row strong{font-size:11px}
  .course-fields{gap:10px}
  .course-unit select{flex-basis:60px;padding-left:7px}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{animation:none!important;transition:none!important}
}

@media(min-width:1001px){
  .result-panel:has(#block-result[data-wide="true"]){grid-template-areas:'title title' 'main main' 'sketch sketch' 'breakdown breakdown' 'equivalents equivalents' 'purchase purchase' 'actions actions' 'note note'}
  .result-panel:has(#block-result[data-wide="true"]) .sketch-disclosure{max-width:320px;justify-self:center;width:100%;padding-top:0}
}
@media print{
  body{background:white;font-size:11px}
  .site-header,.content-section,.download-section,.sources-section,.site-footer,.calculator-foot,.option-shortcuts,.specialist-links,.result-actions,.toast,dialog,.skip-link,.form-details>summary,.calculate-button,.form-guidance{display:none!important}
  .page-shell{margin:0;width:100%;max-width:none}
  .page-intro{padding:0 0 20px}
  h1{font-size:26px}
  .intro-copy{font-size:11px}
  .calculator-board{display:none}
  .print-summary{display:block;white-space:pre-wrap;overflow-wrap:anywhere;font-family:Montserrat,Arial,sans-serif;font-size:12px;line-height:1.7;margin:0}
  .estimate-form{padding:0 0 20px}
  .form-toolbar{display:none}
  #form-fields{display:block}
  .field-row{gap:20px}
  .field label{font-size:11px}
  .result-panel{display:block;break-inside:avoid;padding:20px;border:1px solid #bbb;background:white}
  .result-main{flex-direction:row;padding:12px 0}
  .result-main>div:first-child{flex-direction:row;align-items:baseline}
  .result-number{font-size:48px}
  .result-caption{font-size:13px}
  .result-side-note{font-size:10px}
  .result-side-note>span:last-child{display:block}
  .result-breakdown>div>span:first-child{font-size:17px}
  .sketch-disclosure{display:none}
  .primary-button,.text-button,.entry-heading button{display:none!important}
  .form-details:not([open]){display:none}
  input,select{height:36px;font-size:12px;box-shadow:none;border-color:#bbb}
  .intro-copy:after{content:'  BlockCalculatorPro.com';font-weight:600}
}