@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;450;500;550;600;650;700&family=DM+Sans:wght@400;500;600;700&family=Playfair+Display:wght@400;500;600&display=swap');
:root{--bg:#f7f6f2;--surface:#fff;--ink:#302b26;--muted:#827c74;--border:#e9e5dd;--gold:#a17a42;--gold-light:#f7f1e7;--dark:#302a25;--red:#a33b32;--green:#54745e}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--bg);color:var(--ink);font-family:'Be Vietnam Pro',sans-serif;font-size:13px;line-height:1.6}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.4}button{transition:background .16s,transform .16s,border-color .16s}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--gold);outline-offset:4px}input:focus,select:focus,textarea:focus{outline:2px solid #b69968;outline-offset:1px}button:hover:not(:disabled){filter:brightness(.97)}[hidden]{display:none!important}.sidebar{position:fixed;inset:0 auto 0 0;width:218px;padding:32px 17px 22px;background:#f0eee8;border-right:1px solid #e6e2d9;display:flex;flex-direction:column;z-index:5}.brand{display:flex;gap:10px;align-items:center;margin:0 8px 58px;font-size:20px;letter-spacing:3.8px;line-height:1.3;font-family:'DM Sans',sans-serif;font-weight:500}.brand small{display:block;font-size:8px;letter-spacing:2.5px;margin-top:6px;color:#8b7b64}.brand-icon{display:grid;place-items:center;font-size:38px;line-height:1;border:1px solid #b29d79;width:41px;height:46px;color:#9b7b48;letter-spacing:0}.side-label{font-size:8px;letter-spacing:1.2px;color:#9a9389;margin:0 13px 15px;font-weight:600}nav{display:flex;flex-direction:column;gap:7px}.nav-link{display:flex;align-items:center;gap:10px;padding:12px;border-radius:6px;font-size:11px;color:#716a61;white-space:nowrap}.nav-link>span:first-child{font-size:19px;line-height:1;width:21px;text-align:center}.nav-link.active{color:#6d512b;background:#e5ded0;font-weight:600}.nav-link:hover{background:#e9e4db}.nav-count{margin-left:auto;font-size:9px;background:#e3ded5;color:#766b58;min-width:20px;text-align:center;border-radius:4px}.side-bottom{margin-top:auto;padding:22px 12px 0;border-top:1px solid #ded8cd;font-size:10px;color:#8b8378}.side-bottom strong{display:block;font-size:11px;font-weight:500;color:#686054;margin-top:8px}.side-bottom p{font-size:10px;line-height:1.9}.lock-icon{font-size:17px;color:#9d8c6d}.brand-sign{font-family:'Playfair Display',Georgia,serif;font-style:italic;color:#9b8c75;font-size:11px;margin-top:24px}.workspace{margin-left:218px}.topbar{height:72px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 42px;font-size:9px;letter-spacing:.7px;background:rgba(255,255,255,.5);color:#9b9388}.topbar strong{font-size:11px;color:#625b52;font-weight:400;letter-spacing:0}.top-divider{margin:0 15px;color:#c9c0b3}.private-badge{font-size:10px;letter-spacing:0;color:#5e6e5a;border:1px solid #d8e0d3;background:#f0f4ed;padding:5px 10px;border-radius:30px;display:flex;gap:6px;align-items:center;white-space:nowrap}.private-badge svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.2}main{max-width:1380px;margin:auto;padding:38px 42px 0}.main-section{scroll-margin-top:25px}.page-heading{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:28px;gap:15px}.eyebrow{color:var(--gold);font-size:8px;font-weight:600;letter-spacing:1.8px;margin-bottom:8px}h1{font-family:'Playfair Display',Georgia,serif;font-size:38px;line-height:1.3;font-weight:500;letter-spacing:-.8px;margin:0 0 10px}.page-heading p,.section-heading p{font-size:11px;color:var(--muted);margin:0}.text-link{font-size:10px;color:#8e7855;margin-bottom:5px;white-space:nowrap}.text-link span{margin-left:8px}.calculator-layout{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(280px,1fr);gap:22px;align-items:start}.card{background:var(--surface);border:1px solid var(--border);border-radius:10px}.calculator-card{padding:24px}.mode-switch{display:grid;grid-template-columns:1fr 1fr;background:#f3f2ef;padding:4px;border-radius:7px;gap:3px;margin-bottom:26px}.mode-switch button{border:0;background:transparent;color:#8c857b;border-radius:5px;padding:10px 8px;font-size:11px}.mode-switch button.selected{background:#fff;color:#493c2d;box-shadow:0 1px 4px #40382a0d;font-weight:550}.mode-switch button span{margin:0 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span{color:#73562d;font-weight:600}.shape-option.selected:after{content:'';width:4px;height:4px;background:#b39463;border-radius:50%;position:absolute;top:6px;right:6px}.shape-option:hover{border-color:#baa580}.measurement-title{margin-top:26px}.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.field-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.field{display:block;min-width:0}.field>span{display:block;font-size:10px;color:#736b61;margin-bottom:7px}.field small{font-size:9px;color:#9b9184;font-weight:400}.input-unit{display:flex;align-items:center;border:1px solid #e3ded5;border-radius:5px;background:white;height:44px;position:relative}.input-unit:focus-within{border-color:#bda37a;box-shadow:0 0 0 2px #bda37a15}.input-unit input{width:100%;min-width:0;border:none;background:transparent;color:var(--ink);padding:10px 37px 10px 12px;font-family:'DM Sans','Be Vietnam 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input.note-input{min-width:100px;max-width:135px;font-size:10px}td:nth-child(3),td:nth-child(4),td:nth-child(5),td:nth-child(6){width:8%}td:nth-child(7){width:7%}td:nth-child(8),td:nth-child(9){white-space:nowrap;font-family:'DM Sans',sans-serif;font-size:12px;color:#8a7b65;vertical-align:middle;width:9%}td:nth-child(9){color:#6e5330;font-weight:500}.remove-row{border:0;background:transparent;color:#b9afa1;padding:5px;min-width:24px;height:34px;font-size:17px}.remove-row:hover{color:var(--red)}.invalid-row input,.invalid-row select{border-color:#e6b9ac}.row-error td{padding:0 15px 9px;font-size:9px;color:var(--red);border:0}.row-error[hidden]{display:none}.batch-bottom{border-top:1px solid var(--border);padding:13px 18px;display:flex;align-items:center;justify-content:space-between;gap:10px}.add-row{border:0;background:transparent;color:#94733f;font-size:10px;padding:5px 0}.local-save{font-size:8px;color:#a1988b;display:flex;align-items:center;gap:5px}.local-save i{display:inline-block;background:#9daa8f;width:4px;height:4px;border-radius:50%}.batch-total{border-top:1px solid #e5dfd2;background:#f4f0e8;padding:18px 23px;display:flex;align-items:center;justify-content:space-between;border-radius:0 0 10px 10px}.batch-total>div>span:first-child{font-size:8px;letter-spacing:1px;font-weight:600;color:#9b8057}.batch-total p{font-size:10px;color:#9e8f77;margin:5px 0 0}.batch-total strong{font-family:'DM Sans',sans-serif;font-size:30px;font-weight:400;letter-spacing:-1px;color:#79603b;line-height:1}.batch-total .total-unit{font-family:'DM Sans',sans-serif;font-size:15px;color:#b39c79;margin-left:4px}.table-footnote{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:8px;color:#a19582;margin:10px 2px 0}.quiet{border:0;background:transparent;font-size:9px;color:#a0917c;padding:5px}.quiet:hover{color:#a33b32}.method-section{margin-top:42px}.method-unit{font-size:10px;color:#a5957a;border:1px solid #e7dfd1;padding:6px 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20px;border-radius:7px;font-size:11px;z-index:30;box-shadow:0 5px 15px #0002;max-width:90vw}.toast.visible{opacity:1;transform:translate(-50%,0)}dialog{border:1px solid #d8cdbb;border-radius:10px;max-width:480px;width:calc(100% - 40px);padding:28px;background:#fffdf8;color:var(--ink);box-shadow:0 20px 80px #0003}dialog::backdrop{background:#302a2566;backdrop-filter:blur(3px)}dialog h2{font-family:'Playfair Display',Georgia,serif;font-size:25px;font-weight:400}dialog p{font-size:12px;color:#8c7d66;line-height:1.8}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:24px}dialog textarea{width:100%;font-size:11px;padding:10px;border:1px solid var(--border);resize:vertical}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(min-width:1500px){body{font-size:14px}main{padding-top:44px}.calculator-card{padding:28px}.shape-option{min-height:80px}.result-diagram{height:185px}.result-card{padding:26px 29px 22px}}
@media(max-width:1180px){.sidebar{width:190px;padding-left:10px;padding-right:10px}.brand{font-size:18px;gap:8px}.brand-icon{width:35px;height:42px}.nav-link{font-size:10px;padding:11px 9px}.workspace{margin-left:190px}main{padding:30px 25px 0}.topbar{padding:0 25px}.calculator-layout{grid-template-columns:minmax(0,1.6fr) minmax(255px,1fr);gap:16px}.calculator-card{padding:20px}.result-card{padding:21px}.shape-option span{font-size:9px}.shape-grid{gap:5px}.depth-fields .field>span{font-size:9px}.field-grid.three{gap:10px}.mode-switch button{font-size:10px}.mode-switch button span{margin:0 7px}.method-card{padding:19px 15px}.toast{left:calc(50% + 95px)}}
@media(max-width:960px){.sidebar{width:76px;padding:25px 10px}.brand{font-size:0;margin:0 auto 50px}.brand small,.side-label,.side-bottom,.brand>span:nth-child(2){display:none}.brand-icon{font-size:34px;width:38px;height:43px}.nav-link{font-size:0;justify-content:center;padding:14px 7px;gap:0}.nav-link>span:first-child{font-size:23px}.nav-count{display:none}.workspace{margin-left:76px}.calculator-layout{grid-template-columns:minmax(0,1.6fr) minmax(245px,1fr)}.page-heading h1{font-size:34px}.text-link{font-size:9px}.field-grid.three{grid-template-columns:1fr 1fr}.field-grid.three #quantityWrap{grid-column:1 / -1}.field-grid.three #quantityWrap .input-unit{max-width:150px}.method-grid{grid-template-columns:1fr}.method-card p{font-size:11px}.method-card{padding:20px}.method-card h3{margin-top:8px}.toast{left:calc(50% + 38px)}}
@media(max-width:740px){.sidebar{position:static;flex-direction:row;width:100%;padding:14px 18px;align-items:center;justify-content:space-between;border-right:0;border-bottom:1px solid var(--border);background:#f0eee8}.brand{font-size:17px;gap:9px;margin:0}.brand>span:nth-child(2),.brand small{display:block}.brand small{font-size:6px;letter-spacing:2px}.brand-icon{width:32px;height:36px;font-size:30px}.sidebar nav{flex-direction:row;gap:5px}.nav-link{padding:8px 9px}.nav-link>span:first-child{font-size:21px}.workspace{margin-left:0}.topbar{height:49px;padding:0 19px;font-size:7px;letter-spacing:.4px}.topbar strong{font-size:9px}.top-divider{margin:0 8px}.private-badge{font-size:8px;padding:4px 8px}.private-badge svg{width:10px}main{padding:26px 18px 0}.page-heading{margin-bottom:22px}.page-heading h1{font-size:31px;letter-spacing:-.5px}.page-heading p{font-size:10px}.page-heading .text-link{display:none}.calculator-layout{grid-template-columns:1fr;gap:18px}.calculator-card{padding:20px}.mode-switch{margin-bottom:23px}.mode-switch button{font-size:11px}.shape-option{min-height:72px}.shape-option span{font-size:10px}.shape-grid{gap:6px}.field-grid.three{grid-template-columns:repeat(3,1fr)}.field-grid.three #quantityWrap{grid-column:auto}.field-grid.three #quantityWrap .input-unit{max-width:none}.field-grid .field>span{font-size:9px}.input-unit input{font-size:16px}.depth-fields .input-unit input{font-size:13px}.result-card{padding:22px 25px}.result-diagram{height:130px}.result-diagram svg{height:122px;width:122px}.result-number{font-size:47px}.result-unit-total{margin-top:15px}.result-sub{margin-bottom:15px}.result-meta{min-height:0}.result-meta .formula-line{margin:7px 0}.disclaimer p{font-size:10px}.batch-section,.method-section{margin-top:33px}.section-heading{align-items:flex-start;gap:13px}.section-heading h2{font-size:24px}.section-heading p{font-size:10px}.section-actions{gap:5px}.section-actions .secondary{font-size:9px;padding:8px;min-height:34px}.icon-action>span{display:none}.section-heading .eyebrow{font-size:7px;letter-spacing:1.4px}.count-pill{font-size:8px;margin-left:5px;vertical-align:3px}.batch-bottom{padding:12px 14px}.local-save{font-size:7px}.batch-total{padding:16px}.batch-total strong{font-size:28px}.table-footnote{font-size:7px;align-items:flex-start}.table-footnote>span{max-width:74%;line-height:1.8}.quiet{font-size:8px}.method-unit{font-size:9px;padding:5px 8px;margin-top:20px}.details-body{grid-template-columns:1fr;gap:14px}.sources{font-size:8px;gap:7px 12px;line-height:1.9}footer{flex-direction:column;align-items:flex-start;gap:7px;margin-top:25px}.toast{left:50%;bottom:18px;font-size:10px;width:max-content;max-width:90vw}.depth-status{font-size:7px}.field-grid.three{gap:8px}.input-unit input{padding-left:10px;padding-right:30px}.input-unit>span{right:9px;font-size:9px}}
.table-scroll{position:relative}
.brand.company-brand{flex-direction:column;gap:10px;margin:0 auto 36px;max-width:100%;line-height:1}
.brand-logo{display:block;width:174px;max-width:100%;height:auto;object-fit:contain}
.brand-caption{display:block;font-family:'DM Sans',sans-serif;font-size:8px;font-weight:500;letter-spacing:2.4px;color:#9b7b48;white-space:nowrap}
.footer-brand{display:flex;align-items:center;gap:16px}
.footer-brand img{display:block;width:96px;max-width:100%;height:auto;object-fit:contain}
.footer-brand .brand-caption{font-size:8px;color:#9b896c}
@media(max-width:960px) and (min-width:741px){.brand.company-brand{margin:0 auto 44px}.brand.company-brand .brand-logo{width:52px}.brand.company-brand .brand-caption{display:none}}
@media(max-width:740px){.brand.company-brand{margin:0;gap:0;flex-shrink:0}.brand.company-brand .brand-logo{width:100px}.brand.company-brand .brand-caption{display:none}.footer-brand{gap:12px}.footer-brand img{width:86px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
/* One tool at a time keeps the conversion workspace compact. */
.tool-badge{color:#927347;font-size:10px;border:1px solid #e4dac9;border-radius:20px;padding:4px 11px;letter-spacing:0;white-space:nowrap}
.page-heading h1{font-size:34px;margin-bottom:8px}
.page-heading{margin-bottom:24px}
.batch-section{margin-top:0}
.result-diagram{height:139px}
.result-diagram svg{width:122px;height:122px}
.result-meta{min-height:0}
.estimate-note{margin:5px 0 0;font-size:9px;color:#b2a58e}
.gia-card{max-width:710px;padding:30px}
.gia-card .field>span{font-size:12px;margin-bottom:10px}
.gia-search-row{display:flex;gap:12px;align-items:stretch}
.gia-search-row input{border:1px solid #ded7cb;border-radius:5px;background:white;color:var(--ink);height:47px;padding:11px 14px;font-family:'DM Sans','Be Vietnam Pro',sans-serif;font-size:17px;min-width:0;flex:1;letter-spacing:.4px}
.gia-search-row input::placeholder{font-family:'Be Vietnam Pro',sans-serif;font-size:12px;letter-spacing:0;color:#b1a590}
.gia-search-row .primary{font-size:12px;padding:10px 18px;white-space:nowrap}
#giaHelp,.gia-ready{font-size:11px;color:#95836a;margin:13px 0 0}
.gia-ready a{color:#8e6b38;text-decoration:underline;text-underline-offset:3px}
@media(max-width:740px){.page-heading h1{font-size:28px}.page-heading{margin-bottom:20px}.tool-badge{font-size:8px;padding:3px 8px}.gia-card{padding:20px}.gia-search-row{flex-direction:column;gap:10px}.gia-search-row input{flex:none;width:100%}.gia-search-row .primary{height:42px}.result-diagram{height:120px}}
/* Supporting information lives on separate, crawlable pages. */
.side-resources{margin-top:auto;padding:25px 12px 4px;display:grid;gap:14px;font-size:10px;line-height:1.8;color:#8e7855}
.side-resources a:hover,.company-website:hover,.guide-link:hover{text-decoration:underline;text-underline-offset:4px}
.side-resources [aria-current=page]{font-weight:600;color:#6d512b}
.company-website{font-size:10px;letter-spacing:0;color:#8e6c3b;white-space:nowrap}
.guide-link{font-size:10px;color:#8e6c3b;white-space:nowrap;margin-bottom:3px}
.content-main{padding-bottom:35px;max-width:1260px}
.content-card{padding:30px;min-width:0}
.content-card h2{font-size:18px;line-height:1.6}
.company-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(260px,1fr);gap:22px;align-items:start}
.company-facts{margin:24px 0 0;display:grid;grid-template-columns:160px minmax(0,1fr);gap:0;font-size:12px;line-height:1.9}
.company-facts dt,.company-facts dd{padding:13px 0;border-top:1px solid var(--border);margin:0;overflow-wrap:anywhere}
.company-facts dt{color:var(--muted);padding-right:18px;font-size:11px}
.company-side{display:grid;gap:20px}
.contact-phone{display:block;font-family:'DM Sans',sans-serif;font-size:27px;margin:16px 0 7px;color:#8f6a34}
.underlined{text-decoration:underline;text-underline-offset:4px;color:#8e7855;font-size:12px}
.bank-card{background:#302a25;color:#f1e9dc;border-color:#302a25}
.bank-card .eyebrow{color:#c5a574}.bank-card h2{font-size:16px;font-weight:400}
.account-number{font-family:'DM Sans',sans-serif;font-size:34px;letter-spacing:2px;margin:10px 0 23px}
.account-label{font-size:8px;letter-spacing:1px;color:#b4a58d;margin:0 0 8px}
.account-owner{font-size:12px;line-height:1.9;margin:0;overflow-wrap:anywhere}
.content-end{display:flex;gap:20px;justify-content:space-between;font-size:11px;color:#8e7855;padding:25px 2px 5px}
.guide-article{max-width:920px;font-size:13px;line-height:1.95}
.guide-article p{margin:14px 0;color:#746b60}
.guide-article strong{font-weight:600;color:#514337}
.guide-article .article-lead{font-size:15px;color:#625344;margin-top:0}
.article-contents{display:flex;flex-direction:row;flex-wrap:wrap;gap:8px 22px;padding:17px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin:23px 0;font-size:11px;color:#93703e}
.guide-article section{margin-top:33px;scroll-margin-top:24px}
.guide-article h2{font-family:'Playfair Display',Georgia,serif;font-size:26px;font-weight:500;letter-spacing:-.2px}
.guide-article h3{font-size:14px;font-weight:550;margin:23px 0 6px}
.guide-article a:not(.primary){color:#92703c;text-decoration:underline;text-underline-offset:3px}
.formula-box{border-left:3px solid #bda071;background:#f7f3eb;padding:17px 20px;margin:21px 0}
.formula-box p{font-family:'DM Sans','Be Vietnam Pro',sans-serif;font-size:16px;color:#75562f;margin:8px 0}
.formula-box span{font-size:11px;color:#8f806b}
.guide-article .article-note{font-size:11px;border:1px solid var(--border);padding:14px 17px;border-radius:5px;color:#90816e}
.guide-table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:6px;margin:20px 0}
.guide-table{min-width:570px;font-size:12px}
.guide-table caption{text-align:left;padding:12px 17px;font-size:10px;color:#9b8460;background:#faf8f4}
.guide-table th,.guide-table td{padding:13px 17px;width:auto!important;vertical-align:middle;font-size:11px}
.guide-table th{letter-spacing:0;font-weight:500}.guide-table td:nth-child(4){font-family:'DM Sans',sans-serif;font-size:14px;color:#8f6935}
.article-cta{display:flex;align-items:center;justify-content:space-between;gap:20px;background:#f6f1e7;border-radius:6px;padding:23px;margin-top:30px}
.article-cta p{font-size:11px;margin:5px 0 0}.article-cta .primary{white-space:nowrap}
.guide-article .article-source{font-size:10px;margin:22px 0 0;color:#a0937f}
.noscript-note{padding:20px;color:#8f6c3e}
@media(max-width:1180px){.company-facts{grid-template-columns:140px minmax(0,1fr)}.content-card{padding:23px}.company-grid{gap:16px;grid-template-columns:minmax(0,1.4fr) minmax(245px,1fr)}}
@media(max-width:960px){.side-resources{display:none}.company-grid{grid-template-columns:1fr}.company-side{grid-template-columns:1fr 1fr}.content-main .page-heading{align-items:flex-start}.content-main .page-heading .primary{margin-top:4px}}
@media(max-width:740px){.sidebar{gap:8px}.sidebar nav{gap:2px}.nav-link{padding:8px}.guide-link{font-size:9px;white-space:normal;max-width:110px;text-align:right}.company-website{font-size:9px}.page-heading{align-items:center}.content-main .page-heading{flex-direction:column;gap:13px}.content-card{padding:22px 20px}.company-side{grid-template-columns:1fr}.company-facts{display:block}.company-facts dt{padding:14px 0 2px}.company-facts dd{border:0;padding:0 0 14px}.content-card h2{font-size:17px}.content-end{font-size:10px;gap:16px}.guide-article{font-size:12px}.guide-article .article-lead{font-size:13px}.guide-article h2{font-size:23px}.article-contents{gap:8px 17px;font-size:10px}.formula-box{padding:14px}.formula-box p{font-size:14px}.article-cta{align-items:flex-start;flex-direction:column;padding:18px}.content-main{padding-bottom:22px}}