:root{--ink:#183c30;--accent:#c35428;--muted:#5e6b64;--line:#bac8bc;--sage:#e8eee6;--white:#fff;--font-sans:Arial,Helvetica,sans-serif;--font-serif:Georgia,"Times New Roman",serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--white);color:var(--ink);font-family:var(--font-sans);margin:0;font-size:17px;line-height:1.6}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer}a:hover{color:var(--accent)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:4px}button:disabled{opacity:.45;cursor:not-allowed}svg{flex-shrink:0}img{max-width:100%;height:auto;display:block}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-family:var(--font-serif);letter-spacing:-.035em;font-weight:700;line-height:1.1}h1{margin-bottom:16px;font-size:clamp(38px,4.2vw,60px)}h2{margin-bottom:12px;font-size:clamp(28px,3vw,40px)}h3{margin-bottom:8px;font-size:24px}p{margin-bottom:20px}small,.small{font-size:14px}.container{width:min(1320px,100% - 96px);margin-inline:auto}.muted{color:var(--muted)}.site-header{border-bottom:1px solid var(--line)}.header-inner{justify-content:space-between;align-items:center;gap:30px;min-height:76px;display:flex}.brand{letter-spacing:-.035em;align-items:center;gap:12px;font-size:25px;font-weight:700;display:inline-flex}.site-header nav,.site-footer nav{align-items:center;gap:32px;font-size:15px;display:flex}.site-header nav a{border-bottom:3px solid #0000;padding-block:26px}.site-header nav a[aria-current=page]{border-color:var(--accent)}.skip-link{background:var(--ink);color:#fff;z-index:10;padding:12px;position:fixed;top:-100px;left:20px}.skip-link:focus{top:12px}.button{border:1px solid var(--ink);color:var(--ink);background:#fff;border-radius:3px;justify-content:center;align-items:center;gap:12px;min-height:48px;padding:13px 24px;font-size:15px;font-weight:600;line-height:1.2;display:inline-flex}.button.primary{background:var(--accent);border-color:var(--accent);color:#fff}.button:hover{background:var(--sage);color:var(--ink)}.button.primary:hover{color:#fff;background:#a7431d}.actions{flex-wrap:wrap;gap:14px;display:flex}.hero{grid-template-columns:1fr 1.12fr;align-items:center;gap:48px;padding-block:40px 30px;display:grid}.hero h1{letter-spacing:-.045em;font-size:clamp(42px,3.8vw,56px);line-height:1.03}.hero p{max-width:560px;font-size:19px;line-height:1.5}.hero .actions{margin-top:26px}.hero figure{margin:0}.hero img{aspect-ratio:1.75;object-fit:cover;object-position:55% 55%;width:100%}.hero figcaption{color:var(--muted);text-align:right;margin-top:5px;font-size:11px}.job-section{border-top:1px solid var(--line);padding-block:25px 36px}.section-intro{margin-bottom:24px}.section-intro p{color:var(--muted);margin:0;font-size:16px}.task-list{grid-template-columns:1fr 1fr;column-gap:48px;display:grid}.task-row{border-bottom:1px solid var(--line);align-items:center;gap:20px;min-height:84px;padding:18px 0;display:flex}.task-row .task-title{font-family:var(--font-serif);letter-spacing:-.02em;min-width:160px;font-size:23px;font-weight:700}.task-row .task-description{color:var(--muted);flex:1;font-size:14px;line-height:1.5}.task-row>.arrow{margin-left:auto}.tool-band{background:var(--ink);color:#fff;padding-block:32px 38px}.tool-band .section-intro p{color:#d9e4dc}.tool-rail{grid-template-columns:repeat(3,1fr);gap:32px;display:grid}.tool-entry{border-right:1px solid #759082;align-items:flex-start;gap:20px;padding-right:28px;display:flex}.tool-entry:last-child{border:0;padding-right:0}.tool-entry h3{margin-bottom:6px;font-size:24px}.tool-entry p{margin-bottom:12px;font-size:14px;line-height:1.4}.tool-entry .arrow{margin-left:auto}.tool-entry .formula-mini{font-family:var(--font-serif);font-size:18px;font-style:italic}.tool-band a:hover{color:#efbc99}.connection-section{padding-block:32px}.guide-rail{grid-template-columns:repeat(3,1fr);gap:32px;margin:22px 0;display:grid}.guide-rail a{border-right:1px solid var(--line);gap:18px;padding-right:25px;display:flex}.guide-rail a:last-child{border:0}.guide-rail h3{font-size:22px}.guide-rail p{color:var(--muted);margin:0;font-size:14px;line-height:1.4}.text-link{color:var(--accent);align-items:center;gap:9px;font-size:15px;font-weight:700;display:inline-flex}.site-footer{border-top:1px solid var(--line);align-items:center;gap:26px;margin-top:16px;padding-block:22px;display:flex}.footer-brand{font-family:var(--font-serif);font-size:22px}.footer-note{color:var(--muted);font-size:12px}.site-footer nav{gap:24px;margin-left:auto;font-size:13px}.page-head{padding-block:25px 28px}.breadcrumb{color:var(--muted);flex-wrap:wrap;gap:9px;margin-bottom:22px;font-size:13px;display:flex}.page-head>p{color:var(--muted);max-width:820px;margin:0;font-size:20px}.index-page{padding-bottom:50px}.index-list{border-top:1px solid var(--line)}.index-item{border-bottom:1px solid var(--line);grid-template-columns:52px 1fr 36px;align-items:center;gap:24px;padding:25px 0;display:grid}.index-item h2{margin-bottom:7px;font-size:29px}.index-item p{color:var(--muted);margin:0;font-size:16px}.index-item .number{font-family:var(--font-serif);color:var(--muted);font-size:22px}.article-grid{grid-template-columns:minmax(0,800px) minmax(220px,1fr);gap:72px;padding-bottom:45px;display:grid}.prose{max-width:800px}.prose h2{margin-top:38px;scroll-margin-top:25px;font-size:31px}.prose h2:first-child{margin-top:0}.prose p{line-height:1.75}.prose a{color:var(--accent);text-underline-offset:3px;text-decoration:underline}.prose ul{padding-left:23px}.prose li{margin-bottom:10px}.article-aside{border-left:1px solid var(--line);padding-left:28px;font-size:15px}.article-aside h2{font-family:var(--font-sans);letter-spacing:0;font-size:17px}.article-aside ol{padding-left:20px}.article-aside li{margin-bottom:12px}.article-meta{color:var(--muted);padding-top:10px;font-size:13px}.checklist{margin-block:32px}.checklist h2{font-size:30px}.checklist-note{font-size:14px;line-height:1.5}.checklist ul{margin:20px 0 0;padding:0;list-style:none}.checklist li{margin-bottom:15px}.checklist label{align-items:flex-start;gap:14px;font-size:16px;display:flex}.checklist input{width:20px;height:20px;accent-color:var(--ink);flex-shrink:0;margin:3px 0}.source-block{border-top:1px solid var(--line);margin-top:30px;padding-top:22px;font-size:14px}.source-block h2{font-size:25px}.source-block li{margin-bottom:12px}.source-block a{text-underline-offset:3px;overflow-wrap:anywhere;text-decoration:underline}.article-tool{background:var(--sage);margin-block:30px;padding:22px}.article-tool h3{font-size:23px}.article-tool p{font-size:15px}.article-toolbar{margin-block:20px}.calculator-shell{grid-template-columns:1.16fr 1fr;gap:16px;margin-bottom:32px;display:grid}.calculator-form{border:1px solid var(--line);min-width:0;padding:26px 30px}.field-row{grid-template-columns:minmax(160px,1fr) minmax(170px,1.5fr);align-items:center;gap:20px;margin-bottom:15px;display:grid}.field-row label,.field-row>.field-label{font-size:16px;font-weight:500}.field-row input[type=text]{border:1px solid var(--line);width:100%;height:44px;color:var(--ink);background:#fff;border-radius:3px;min-width:0;padding:9px 13px;font-size:17px}.field-row input[aria-invalid=true]{border-color:#a73428}.unit-switch{border:1px solid var(--line);border-radius:3px;display:flex;overflow:hidden}.unit-switch label{text-align:center;cursor:pointer;flex:1;position:relative}.unit-switch input{opacity:0;width:100%;height:100%;margin:0;position:absolute;inset:0}.unit-switch span{padding:9px 8px;font-size:15px;display:block}.unit-switch input:checked+span{background:var(--accent);color:#fff}.unit-switch input:focus-visible+span{outline:3px solid var(--ink);outline-offset:-4px}.form-note{color:var(--muted);margin:22px 0 0;font-size:14px}.field-error{color:#a73428;grid-column:2;margin-top:-12px;font-size:13px;line-height:1.5}.result-panel{background:var(--sage);min-width:0;padding:27px 32px}.result-panel h2{font-family:var(--font-sans);letter-spacing:-.02em;margin-bottom:16px;font-size:25px}.result-main{font-family:var(--font-serif);margin-bottom:22px;line-height:1}.result-number{letter-spacing:-.045em;overflow-wrap:anywhere;font-size:clamp(64px,6.1vw,88px);font-weight:700;display:block}.result-unit{margin-top:4px;font-size:31px;font-weight:700;line-height:1.2;display:block}.result-rows{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:0 0 18px;padding-block:15px}.result-rows>div{justify-content:space-between;gap:20px;margin-block:10px;font-size:16px;display:flex}.result-rows dt{color:var(--muted)}.result-rows dd{text-align:right;font-variant-numeric:tabular-nums;margin:0}.result-actions{flex-wrap:wrap;gap:10px;display:flex}.result-actions .button{padding-inline:17px;font-size:14px}.status{margin-top:16px;font-size:14px}.status:empty{display:none}.share-fallback{margin-top:12px}.share-fallback input{border:1px solid var(--line);width:100%;padding:10px;font-size:13px}.calculation-error{color:#8e2920;min-height:210px;font-size:16px}.calculator-notes{grid-template-columns:1fr 1fr;gap:45px;margin-bottom:40px;display:grid}.calculator-notes>section+section{border-left:1px solid var(--line);padding-left:38px}.calculator-notes h2{font-size:31px}.calculator-notes p{font-size:16px}.calculator-notes .checklist{margin:0}.formula-box{background:var(--sage);font-family:var(--font-serif);overflow-wrap:anywhere;margin:18px 0;padding:12px 16px;font-size:19px}.simple-page{max-width:820px;margin-bottom:60px}.simple-page .page-head{padding-bottom:35px}.no-js{border:1px solid var(--accent);margin-bottom:20px;padding:15px;font-size:15px}.print-inputs{display:none}.hidden,[hidden]{display:none!important}@media (width>=1400px){.hero h1{font-size:54px}.hero{gap:45px}.task-row .task-title{min-width:156px}}@media (width<=1100px){.container{width:calc(100% - 64px)}.hero{gap:30px}.hero h1{font-size:48px}.hero .actions{gap:10px}.hero .button{padding-inline:16px}.task-row{flex-wrap:wrap;gap:16px}.task-row .task-title{min-width:0}.task-row .task-description{flex-basis:100%;order:3;margin-left:40px}.task-row>.arrow{margin-left:auto}.article-grid{gap:36px}.field-row{grid-template-columns:1fr;gap:5px}.field-error{grid-column:1;margin:0}.result-panel{padding:25px}.tool-entry{gap:13px;padding-right:15px}.guide-rail{gap:18px}.guide-rail a{padding-right:15px}}@media (width<=700px){body{font-size:16px}.container{width:calc(100% - 36px)}.header-inner{flex-wrap:wrap;gap:0;padding-top:17px}.brand{gap:9px;font-size:24px}.site-header nav{justify-content:space-between;gap:10px;width:100%;font-size:13px}.site-header nav a{padding-block:14px 12px}.hero{grid-template-columns:1fr;gap:25px;padding-block:30px 24px}.hero h1{font-size:43px}.hero p{margin-bottom:20px;font-size:17px}.hero .actions{margin-top:20px}.hero img{aspect-ratio:1.65}.hero figcaption{font-size:10px}.task-list{grid-template-columns:1fr;gap:0}.task-row{gap:14px;min-height:79px;padding:16px 0}.task-row .task-title{font-size:22px}.task-row .task-description{flex-basis:calc(100% - 38px);margin-top:-8px;margin-left:38px;font-size:13px}.job-section{padding-top:24px}.section-intro{margin-bottom:16px}.tool-rail,.guide-rail{grid-template-columns:1fr;gap:0}.tool-entry,.guide-rail a{border-bottom:1px solid #759082;padding:22px 0;border-right:0!important}.tool-entry:last-child,.guide-rail a:last-child{border-bottom:0}.guide-rail a{border-bottom-color:var(--line)}.tool-band{padding-block:28px 15px}.tool-entry h3{font-size:25px}.tool-entry p{font-size:15px}.tool-entry .arrow{margin-left:auto}.guide-rail{margin-block:4px 20px}.guide-rail h3{font-size:25px}.guide-rail p{font-size:15px}.site-footer{flex-wrap:wrap;gap:15px;padding-block:23px}.footer-note{display:none}.site-footer nav{gap:25px;width:100%;margin-left:0}.page-head{padding-block:20px 25px}.page-head h1{font-size:38px}.page-head>p{font-size:17px}.breadcrumb{margin-bottom:18px;font-size:12px}.index-item{grid-template-columns:27px 1fr 24px;gap:13px;padding:21px 0}.index-item h2{font-size:26px}.index-item p{font-size:14px}.article-grid{flex-direction:column;gap:20px;display:flex}.article-aside{border-left:0;border-top:1px solid var(--line);padding:25px 0 0}.prose h2{font-size:29px}.calculator-shell{grid-template-columns:1fr;gap:14px}.calculator-form{padding:22px 20px}.field-row{grid-template-columns:1fr;gap:7px;margin-bottom:17px}.field-row label,.field-row>.field-label{font-size:15px}.result-panel{padding:24px 22px}.result-number{font-size:70px}.result-unit{font-size:27px}.result-rows>div{font-size:15px}.result-actions .button{padding-inline:13px;font-size:13px}.calculator-notes{grid-template-columns:1fr;gap:25px}.calculator-notes>section+section{border-left:0;border-top:1px solid var(--line);padding:26px 0 0}.calculator-notes h2{font-size:28px}.formula-box{font-size:17px}.article-toolbar .button{font-size:14px}.form-note{font-size:13px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{@page{margin:15mm}body{color:#000;background:#fff;font-size:11pt;line-height:1.45}.container{width:100%;max-width:none}.site-header,.site-footer,.skip-link,.actions,.article-toolbar,.result-actions,.share-fallback,.status,.breadcrumb,.hero figure,.article-aside,.unit-switch,.footer-note{display:none!important}h1{font-size:25pt!important}h2{font-size:17pt!important}h3{font-size:14pt!important}a{color:#000}.page-head{padding:0 0 15px}.article-grid,.calculator-shell,.calculator-notes{display:block}.calculator-form{border:1px solid #777;margin-bottom:15px;padding:12px}.field-row{justify-content:space-between;gap:15px;margin-bottom:8px;display:flex}.field-row:has(.unit-switch){display:none}.field-row label{font-size:11pt}.field-row input[type=text]{text-align:right;border:0;max-width:50%;height:auto;padding:0;font-size:11pt}.field-error{display:none}.result-panel{break-inside:avoid;print-color-adjust:exact;background:#eee;padding:15px}.result-number{font-size:40pt}.result-unit{font-size:18pt}.result-rows>div{margin-block:6px;font-size:11pt}.calculator-notes>section+section{border:0;padding:15px 0 0}.print-inputs{margin-top:12px;font-size:10pt;display:block}.prose{max-width:none}.prose h2{margin-top:20px}.prose p{margin-bottom:12px;line-height:1.5}.checklist{break-inside:avoid}.checklist label{font-size:11pt}.checklist input{appearance:auto;print-color-adjust:exact;width:14px;height:14px}.source-block{font-size:9pt}.source-block a:after{content:" (" attr(href) ")";overflow-wrap:anywhere;font-size:8pt}.tool-band{color:#000;background:#fff}.hero,.task-list,.tool-rail,.guide-rail{display:block}h2,h3{break-after:avoid}.form-note{font-size:10pt}.no-js{border-color:#777}}
