:root{--bg: #f8fafc;--surface: #ffffff;--text: #0f172a;--muted: #475569;--border: #cbd5e1;--border-soft: #e2e8f0;--accent: #0f766e;--accent-dark: #115e59;--accent-tint: rgba(15, 118, 110, .08);--error: #b91c1c;--error-bg: #fef2f2;--warn-bg: #fffbeb;--warn-border: #f59e0b;--radius: 12px;--maxw: 1120px;--focus: 0 0 0 3px rgba(15, 118, 110, .35)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.6}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}.skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;padding:8px 16px;z-index:100}.skip-link:focus{left:8px;top:8px}.site-header{background:var(--surface);border-bottom:1px solid var(--border-soft);position:sticky;top:0;z-index:50}.site-header .wrap{display:flex;align-items:center;gap:24px;min-height:64px;flex-wrap:wrap}.brand{font-weight:800;font-size:20px;color:var(--accent-dark);text-decoration:none;letter-spacing:-.02em}.brand span{color:var(--text)}.main-nav{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}.main-nav a{color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:8px;font-size:15px}.main-nav a:hover{background:var(--accent-tint);color:var(--accent-dark)}.main-nav a[aria-current]{color:var(--accent-dark);font-weight:600}.page-head{padding:48px 0 24px}.eyebrow{color:var(--accent);font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:.08em;margin:0 0 8px}h1{font-size:clamp(28px,4vw,40px);line-height:1.15;letter-spacing:-.02em;margin:0 0 12px}.lede{font-size:18px;color:var(--muted);max-width:720px;margin:0}.breadcrumb{font-size:14px;color:var(--muted);margin:16px 0 0}.breadcrumb a{color:var(--accent-dark)}.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.card{background:var(--surface);border:1px solid var(--border-soft);border-radius:var(--radius);padding:24px;display:block;text-decoration:none;color:inherit;transition:box-shadow .15s ease,transform .15s ease,border-color .15s ease}.card:hover{border-color:var(--accent);box-shadow:0 6px 24px #0f172a14;transform:translateY(-2px)}.card h3{margin:0 0 6px;font-size:17px}.card p{margin:0;color:var(--muted);font-size:14.5px}.card .go{color:var(--accent);font-weight:600;font-size:14px;margin-top:12px;display:inline-block}.section{padding:32px 0}.section h2{font-size:24px;letter-spacing:-.01em;margin:0 0 8px}.section>.wrap>p.sub,.section .sub{color:var(--muted);margin:0 0 20px;max-width:720px}.calculator{background:var(--surface);border:1px solid var(--border-soft);border-radius:var(--radius);padding:24px;margin:8px 0 32px}.calc-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.field-label{font-weight:600;font-size:14px}.field-label .opt{color:var(--muted);font-weight:400}.input-row{display:flex;gap:8px}input[type=text],input[type=number],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:16px;font-family:inherit;color:var(--text);background:#fff}input:focus-visible,select:focus-visible,button:focus-visible,a:focus-visible{outline:none;box-shadow:var(--focus);border-color:var(--accent)}.unit-select{width:auto;min-width:96px}.field-help{font-size:13px;color:var(--muted);margin:0}.field-error{font-size:13px;color:var(--error);margin:0}.has-error input{border-color:var(--error)}.repeat-row{border:1px solid var(--border-soft);border-radius:10px;padding:16px;margin-bottom:12px}.repeat-row .row-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.repeat-row .row-title{font-weight:700;color:var(--accent-dark)}.repeat-row .calc-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}button,.btn{border:1px solid transparent;border-radius:8px;padding:11px 20px;font-size:15px;font-weight:600;cursor:pointer;font-family:inherit;transition:background .15s ease}.btn-primary{background:var(--accent);color:#fff;min-height:44px}.btn-primary:hover{background:var(--accent-dark)}.btn-ghost{background:#fff;color:var(--accent-dark);border-color:var(--border);min-height:44px}.btn-ghost:hover{background:var(--accent-tint)}.btn-small{padding:6px 12px;font-size:13.5px;min-height:36px}.form-error{background:var(--error-bg);border:1px solid var(--error);color:var(--error);border-radius:8px;padding:12px 16px;margin-top:16px;font-weight:600}.result-card{margin-top:24px;border:2px solid var(--accent);border-radius:var(--radius);overflow:hidden}.result-card.is-stale{border-color:var(--warn-border);opacity:.75}.result-primary{background:var(--accent);color:#fff;padding:20px 24px}.result-primary .label{font-size:14px;opacity:.85;margin:0}.result-primary .value{font-size:clamp(24px,3.5vw,34px);font-weight:800;margin:0;letter-spacing:-.01em}.stale-badge{background:var(--warn-bg);color:#92400e;border-bottom:1px solid var(--warn-border);padding:8px 24px;font-size:13.5px;font-weight:600}.result-body{padding:16px 24px 24px}.result-table{width:100%;border-collapse:collapse;margin-top:4px}.result-table td{padding:9px 0;border-bottom:1px solid var(--border-soft);font-size:15px}.result-table td:last-child{text-align:right;font-variant-numeric:tabular-nums}.result-table tr.strong td{font-weight:700}.input-echo{font-size:13px;color:var(--muted);margin:14px 0 0}.result-notes{font-size:13.5px;color:var(--muted);margin:10px 0 0;padding-left:18px}.result-actions{display:flex;gap:12px;margin-top:16px}.diagram-box{margin-top:16px;padding:16px;background:var(--bg);border-radius:10px}.diagram-box svg{max-width:340px;width:100%;height:auto;display:block}.svg-label{font-size:11px;fill:var(--muted);font-family:inherit}.layout-table{width:100%;border-collapse:collapse;margin-top:14px;font-size:14px}.layout-table caption{text-align:left;font-weight:600;margin-bottom:6px}.layout-table th,.layout-table td{padding:6px 8px;border-bottom:1px solid var(--border-soft);text-align:left}.prose{max-width:760px}.prose h2{font-size:22px;margin:36px 0 10px}.prose h3{font-size:17px;margin:24px 0 8px}.prose p,.prose li{color:#334155}.prose ul,.prose ol{padding-left:22px}.prose li{margin:6px 0}.formula-box{background:var(--accent-tint);border-left:3px solid var(--accent);border-radius:0 10px 10px 0;padding:14px 18px;margin:14px 0}.formula-box p{margin:4px 0;font-weight:600;color:var(--accent-dark)}.note-box{background:var(--warn-bg);border-left:3px solid var(--warn-border);border-radius:0 10px 10px 0;padding:14px 18px;margin:14px 0;font-size:14.5px}.example-box{background:var(--surface);border:1px dashed var(--border);border-radius:10px;padding:16px 18px;margin:14px 0}.example-box .ex-title{font-weight:700;margin:0 0 6px}.disclaimer{font-size:13px;color:var(--muted);border-top:1px solid var(--border-soft);padding-top:14px;margin-top:32px}.settings-bar{display:flex;gap:16px;align-items:center;flex-wrap:wrap;font-size:14px;color:var(--muted);margin:0 0 16px}.seg{display:inline-flex;border:1px solid var(--border);border-radius:8px;overflow:hidden}.seg button{border:none;border-radius:0;padding:7px 14px;background:#fff;color:var(--muted);font-size:13.5px;min-height:36px}.seg button.is-active{background:var(--accent);color:#fff}.settings-bar select{width:auto;padding:7px 10px;font-size:13.5px}.settings-bar .linkish{background:none;border:none;color:var(--accent-dark);text-decoration:underline;padding:4px;min-height:0;font-size:13.5px;font-weight:500}.dir-table{width:100%;border-collapse:collapse;background:var(--surface);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border-soft)}.dir-table th,.dir-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border-soft);font-size:15px}.dir-table th{background:var(--accent-tint);color:var(--accent-dark);font-size:13px;text-transform:uppercase;letter-spacing:.05em}.dir-table a{color:var(--accent-dark);font-weight:600}.site-footer{border-top:1px solid var(--border-soft);margin-top:48px;padding:32px 0;color:var(--muted);font-size:14px}.site-footer .wrap{display:flex;gap:24px;flex-wrap:wrap;justify-content:space-between}.site-footer a{color:var(--muted);margin-right:16px}@media(max-width:720px){.calculator{padding:16px}.main-nav{display:none}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}@media print{.site-header,.site-footer,.calc-form,.settings-bar,.btn-row,.no-print{display:none!important}.result-card{border:2px solid #000;opacity:1}body{background:#fff}}.site-footer{background:var(--surface);border-top:1px solid var(--border-soft);padding:28px 0;margin-top:48px;font-size:14px;color:var(--muted)}.site-footer .wrap{display:grid;gap:16px;grid-template-columns:1fr}.footer-links{display:flex;flex-wrap:wrap;gap:4px 14px}.footer-links a{color:var(--muted);text-decoration:none;font-size:14px;padding:4px 0}.footer-links a:hover{color:var(--accent-dark);text-decoration:underline}.prose{font-size:16px;line-height:1.75;color:var(--text)}.prose h2{font-size:20px;margin:28px 0 10px;letter-spacing:-.01em}.prose h3{font-size:16px;margin:22px 0 8px}.prose p{margin:0 0 12px}.prose ul,.prose ol{margin:0 0 12px 20px;padding:0}.prose li{margin:4px 0}.prose a{color:var(--accent-dark)}.prose code{background:var(--accent-tint);padding:1px 5px;border-radius:4px;font-size:14px}.formula-box,.example-box,.assumptions-box,.limitations-box,.sources-box{background:var(--surface);border:1px solid var(--border-soft);border-radius:var(--radius);padding:20px 24px;margin:16px 0}.formula-box h3,.example-box h3,.assumptions-box h3,.limitations-box h3,.sources-box h3{margin-top:0;color:var(--accent-dark);font-size:15px;text-transform:uppercase;letter-spacing:.04em}.formula-box code{display:block;padding:12px 16px;background:#0f172a;color:#e2e8f0;border-radius:8px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;white-space:pre-wrap}.disclaimer{font-size:13px;color:var(--muted);margin-top:24px;padding-top:16px;border-top:1px solid var(--border-soft)}.related-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));margin:16px 0 32px}.field{display:flex;flex-direction:column;gap:6px}.dir-table{width:100%;border-collapse:collapse}.dir-table th,.dir-table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border-soft);font-size:15px}.dir-table th{background:var(--accent-tint);font-weight:600;color:var(--accent-dark);font-size:14px}.dir-table a{color:var(--text);font-weight:500;text-decoration:none}.dir-table a:hover{color:var(--accent-dark);text-decoration:underline}.settings-bar{display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px;margin:16px 0 8px;padding:12px 16px;background:var(--surface);border:1px solid var(--border-soft);border-radius:10px;font-size:14px}.settings-bar label{font-weight:600}.settings-bar select{width:auto;min-width:100px;padding:6px 10px;font-size:14px}.settings-bar .seg{display:inline-flex;gap:4px}.settings-bar .seg button{border:1px solid var(--border);background:#fff;color:var(--muted);padding:5px 12px;font-size:13px;border-radius:6px;cursor:pointer}.settings-bar .seg button:hover{color:var(--text)}.settings-bar .seg button.is-active{background:var(--accent);color:#fff;border-color:var(--accent)}.linkish{background:none;border:0;color:var(--accent-dark);text-decoration:underline;cursor:pointer;padding:0}.note-box{background:var(--warn-bg);border:1px solid var(--warn-border);color:#92400e;border-radius:8px;padding:12px 16px;margin:12px 0;font-size:14px;font-weight:500}.diagram-box{background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius);padding:20px;margin-top:16px;text-align:center;color:var(--muted);font-size:13px}@media(max-width:720px){.site-header .wrap{flex-direction:column;gap:12px;padding:12px 16px}.main-nav{margin-left:0;width:100%;justify-content:flex-start;flex-wrap:wrap}.main-nav a{padding:6px 10px;font-size:14px}.grid,.calc-grid{grid-template-columns:1fr}.page-head{padding:32px 0 16px}.page-head h1{font-size:26px}.lede{font-size:16px}.result-primary .value{font-size:24px}.btn-row{flex-direction:column}.btn-row button{width:100%}.site-footer{padding:20px 0;margin-top:32px;font-size:13px}}@media print{.skip-link,.settings-bar,.no-print,.site-header,.site-footer,.btn-row,.diagram-box,.form-error,.stale-badge{display:none!important}body{background:#fff;color:#000}.calculator,.result-card{border:1px solid #000!important}.result-primary{background:#fff!important;color:#000!important}.result-primary .value{color:#000}.calculator{padding:0;margin:0;border:0;box-shadow:none}*{background:transparent!important;color:#000!important;box-shadow:none!important;text-shadow:none!important}@page{margin:.75in}}[hidden]{display:none!important}:root{--bg:#f6f8f7;--text:#172d28;--muted:#52645d;--accent:#176c54;--accent-dark:#11513f;--accent-tint:#eaf3ee;--border:#bccdc4;--border-soft:#dce5df;--radius:14px;--maxw:1180px}body{font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}.wrap{padding:0 32px}a{color:var(--accent-dark);text-underline-offset:3px}.site-header{position:relative;background:#fff}.site-header .wrap{min-height:82px;gap:24px;flex-direction:row}.brand{font-size:24px;white-space:nowrap}.main-nav{display:flex;align-items:center;gap:3px}.nav-toggle{display:none;min-height:44px;padding:8px 14px;border:1px solid var(--border);border-radius:8px;background:#fff;font:inherit;font-size:13px;font-weight:650;color:var(--text);cursor:pointer}.currency-select{min-height:36px;max-width:88px}.main-nav a{font-size:14px;padding:11px 12px;min-height:44px;white-space:nowrap}.main-nav a:last-child{border:1px solid var(--border);margin-left:8px;color:var(--accent-dark);font-weight:650}h1{font-size:clamp(32px,4.1vw,54px);font-weight:750;line-height:1.12;letter-spacing:-.045em}h2,h3{line-height:1.3}.eyebrow{font-size:11px;letter-spacing:.13em}.lede{font-size:18px;line-height:1.65;max-width:650px}.home-hero{display:grid;grid-template-columns:1.35fr 1fr;gap:65px;align-items:center;padding:68px 0 58px;border-bottom:1px solid var(--border-soft)}.home-hero h1{margin:16px 0 22px}.home-hero .lede{max-width:520px}.hero-copy{min-width:0}.hero-footnote{font-size:12px;color:var(--muted);margin:24px 0 0}.hero-footnote span{margin:0 8px}.tool-search{margin:28px 0 0}.tool-search label{display:block;font-size:14px;font-weight:650;margin-bottom:8px}.search-control{display:flex;background:#fff;border:1px solid var(--border);border-radius:10px;padding:5px;gap:5px;box-shadow:0 4px 12px #143b2410}input[type=search]{min-width:0;width:100%;padding:12px 14px;background:#fff;border:1px solid var(--border);border-radius:8px;font:inherit;color:var(--text);-webkit-appearance:none}.search-control input{border:0;box-shadow:none}.search-control button{white-space:nowrap;padding:12px 14px;font-size:13px}.quick-links{display:flex;flex-wrap:wrap;gap:8px 14px;margin:14px 0 0;font-size:12px}.quick-links span{color:var(--muted)}.hero-example{background:#edf3ec;border:1px solid #d4dfd2;border-radius:18px;padding:25px 28px;transform:rotate(1deg)}.example-top{display:flex;align-items:center;justify-content:space-between;gap:6px;font-size:9px;letter-spacing:.06em;color:#496353}.example-tag{border:1px solid #b9cdbb;border-radius:20px;padding:3px 8px;letter-spacing:0}.hero-example h2{font-size:22px;letter-spacing:-.035em;margin:20px 0 0}.hero-example svg{display:block;width:100%;height:auto;margin:3px 0}.hero-example svg text{font:12px ui-sans-serif,system-ui;fill:#496353}.example-answer{border-top:1px solid #cfddcf;padding-top:14px}.example-answer>span{display:block;color:var(--muted);font-size:12px}.example-answer strong{display:block;font-size:37px;line-height:1.3;letter-spacing:-.035em}.example-answer small{font-size:19px;font-weight:550}.example-answer p{margin:3px 0;font-size:12px;color:var(--muted)}.hero-example>a{display:block;margin-top:20px;font-size:13px;font-weight:650;text-decoration:none}.section{padding:42px 0}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:22px}.section h2{font-size:26px;margin:0;letter-spacing:-.035em}.section-heading .eyebrow{margin-bottom:8px}.text-link{font-size:13px;font-weight:650;text-decoration:none}.text-link:hover{text-decoration:underline}.category-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.category-card{position:relative;background:#fff;border:1px solid var(--border-soft);border-radius:12px;padding:22px;text-decoration:none;color:var(--text)}.category-icon{display:inline-flex;align-items:center;justify-content:center;padding:10px;background:#eef4ed;border-radius:10px;color:var(--accent);margin-bottom:26px}.category-count{float:right;font-size:10px;color:var(--muted);margin-top:15px}.category-card h3{font-size:17px;margin:0 0 9px}.category-card p{font-size:13px;color:var(--muted);margin:0 0 20px}.go{font-size:12px;font-weight:650;color:var(--accent)}.category-card:hover{border-color:var(--accent)}.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}.grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.card{padding:24px;min-width:0}.card h3{font-size:18px;letter-spacing:-.02em}.card p{font-size:14px;line-height:1.65}.card:hover{transform:none}.card-kicker{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:12px}.tool-card .go{display:flex;justify-content:space-between;margin-top:22px}.how-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:36px;background:#edf2ed;border-radius:14px;padding:32px;margin:10px 0}.how-strip span{font-size:12px;color:var(--accent)}.how-strip h3{font-size:17px;margin:10px 0}.how-strip p{font-size:13px;color:var(--muted);margin:0}.trust-section{max-width:720px;padding-bottom:12px}.trust-section p{color:var(--muted)}.page-head{padding:38px 0 24px}.page-head h1{font-size:36px}.breadcrumb{font-size:12px}.calculator{padding:0;border:0;background:transparent;margin-top:18px;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:24px;align-items:start}.calc-form{background:#fff;padding:28px;border:1px solid var(--border-soft);border-radius:14px;min-width:0}.form-section-title{margin:0 0 5px;font-size:19px;letter-spacing:-.02em}.form-intro{font-size:13px;color:var(--muted);margin:0 0 22px}.calc-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 16px}.field-label{font-size:13px;line-height:1.45}.input-row{gap:0;border:1px solid var(--border);border-radius:8px;background:#fff;overflow:hidden}.input-row input{min-width:0;border:0;border-radius:0;width:100%}.input-row .unit-select{border:0;border-left:1px solid var(--border-soft);border-radius:0;flex:0 0 auto;min-width:62px;max-width:none;font-size:13px;padding-left:9px;padding-right:6px;background:#f5f8f5}.field-help{font-size:12px;line-height:1.55}.field-error{font-size:12px}.has-error .input-row{border-color:var(--error)}.input-row:focus-within{outline:2px solid var(--accent);outline-offset:2px}.optional-fields{border-top:1px solid var(--border-soft);margin-top:24px;padding-top:16px}.optional-fields>summary{cursor:pointer;font-size:14px;font-weight:650;padding:7px 0;min-height:44px}.optional-fields>.calc-grid{margin-top:16px}.btn-row{gap:10px;flex-direction:row}.btn-row>.btn-primary{flex:1}.btn-row button{font-size:13px}.btn-reset{padding-left:10px;padding-right:10px}.result-placeholder{padding:32px;background:#edf3ee;border:1px dashed #bacfc1;border-radius:14px;color:var(--muted)}.result-placeholder h2{font-size:20px;color:var(--text);margin:16px 0 10px}.result-placeholder p,.result-placeholder li{font-size:13px}.result-placeholder ol{padding-left:18px}.result-placeholder .placeholder-symbol{font-size:30px;color:var(--accent)}.result-placeholder .subtle{font-size:11px;border-top:1px solid #d6e1d7;padding-top:15px;margin-top:22px}.result-card{margin-top:0;border:1px solid var(--accent)}.result-primary{padding:25px}.result-primary .value{font-size:32px}.result-card:focus{outline:3px solid #8fb8a6;outline-offset:4px}.result-body{padding:16px 22px}.result-actions{flex-wrap:wrap}.result-actions button,.result-table td{font-size:13px}.result-table td:last-child{overflow-wrap:anywhere}.settings-bar{background:transparent;border:0;padding:0;font-size:12px;gap:12px;margin-bottom:0}.settings-bar .seg button{min-height:44px;padding:9px 13px}.settings-bar select{min-height:44px}.settings-bar .linkish{font-size:11px;min-height:44px}.prose{max-width:780px}.faq{border-top:1px solid var(--border-soft);padding:14px 0}.faq:first-of-type{border-top:0}.faq h3{font-size:16px;margin:0 0 6px}.faq p{margin:0}.prose h2{margin-top:32px;font-size:22px}.prose p,.prose li{font-size:15px}.prose .formula-box{padding:16px 20px;background:#edf3ee;border:1px solid #d4e2d6}.prose .formula-box p{font-weight:500;font-size:14px;overflow-wrap:anywhere}.prose+.section{border-top:1px solid var(--border-soft);margin-top:34px}.directory-controls{max-width:100%;margin:0 0 24px}.directory-controls>input{max-width:580px;display:block;margin:8px 0 18px;padding:14px}.filter-chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.filter-chips button{min-height:44px;padding:8px 14px;font-size:12px;background:#fff;color:var(--muted);border:1px solid var(--border);border-radius:24px}.filter-chips [aria-pressed=true]{background:var(--accent);color:#fff;border-color:var(--accent)}.empty-search{padding:36px;background:#fff;border:1px dashed var(--border);border-radius:12px}.site-footer{margin-top:55px;background:#edf2ee}.site-footer .wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px}.footer-links{justify-content:flex-end;align-content:start}.footer-links a{min-height:30px}@media(max-width:1000px){.main-nav a{padding:9px 8px;font-size:12px}.home-hero{gap:28px}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.calculator{grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:16px}.calc-form{padding:22px}.calc-grid{grid-template-columns:1fr}.hero-example{padding:22px}}@media(max-width:720px){.nav-toggle{display:inline-block}.main-nav{display:none;flex-direction:column;align-items:stretch;width:100%;margin:6px 0 0;gap:2px}.main-nav.is-open{display:flex}.main-nav a{min-height:44px;padding:10px 12px}.wrap{padding:0 20px}.site-header .wrap{padding:14px 20px;gap:14px;justify-content:space-between}.brand{font-size:21px}.main-nav a{font-size:12px;padding:10px 12px;min-height:44px}.main-nav a:last-child{margin-left:0}.home-hero{grid-template-columns:1fr;padding:36px 0 30px;gap:30px}.home-hero h1{font-size:40px}.desktop-break{display:none}.home-hero .lede{font-size:16px}.hero-example{display:none}.search-control button{font-size:12px;white-space:normal;max-width:128px}.hero-footnote{font-size:11px}.hero-footnote span{margin:0 4px}.section{padding:30px 0}.section-heading{align-items:start;flex-direction:column;gap:10px}.section h2{font-size:24px}.category-grid{gap:10px}.category-card{padding:17px}.category-icon{margin-bottom:18px}.category-card h3{font-size:16px}.category-card p{font-size:12px}.category-count{font-size:9px}.category-card .go{font-size:11px}.grid{grid-template-columns:1fr}.how-strip{grid-template-columns:1fr;gap:24px;padding:24px}.how-strip h3{margin-top:5px}.calculator{grid-template-columns:1fr;gap:16px}.calc-form{padding:22px 18px}.calc-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 12px}.calculator .field:has(.field-help){grid-column:auto}.page-head{padding:22px 0 16px}.page-head h1{font-size:28px;margin:6px 0}.page-head .lede{font-size:14px;margin:0}.settings-bar{gap:8px}.settings-bar>label{font-size:12px}.result-placeholder{padding:22px}.btn-row{flex-wrap:wrap}.btn-row button{width:auto}.btn-row .btn-primary{flex-basis:100%}.site-footer .wrap{grid-template-columns:1fr;gap:15px}.footer-links{justify-content:flex-start}.filter-chips{gap:7px}.filter-chips button{font-size:11px;padding:8px 10px}}@media(max-width:370px){.wrap{padding:0 16px}.calc-grid,.category-grid{grid-template-columns:1fr}.home-hero h1{font-size:35px}.main-nav a{font-size:10px;padding:7px 6px}}@media print{.result-placeholder,.home-hero,.directory-controls{display:none!important}.calculator{display:block}.result-card{break-inside:avoid}.prose{max-width:none}}@media(max-width:720px){.main-nav a{font-size:12px;min-height:44px}.search-control{flex-direction:column}.search-control button{max-width:none;white-space:nowrap;min-height:48px}.search-control input{min-height:48px}.search-control button span{white-space:nowrap}}.calculator-context{max-width:850px;color:var(--muted);font-size:15px;margin:0 0 24px;line-height:1.7}.settings-bar.form-units{margin:0 0 14px}.breadcrumb.after-calculator{display:block;margin:16px 0 0}.example-notice{font-size:13px;margin-bottom:20px}.issue-form{max-width:680px}.issue-form label{display:block;font-weight:600;margin-bottom:7px}.issue-form input,.issue-form textarea,.issue-form select{width:100%;min-height:44px}.issue-form textarea{resize:vertical}.issue-trap{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}:focus-visible{outline:3px solid #216b53;outline-offset:3px}.field-help,.opt{color:#4b6157}@media(max-width:520px){.calc-grid{grid-template-columns:1fr}.result-primary .value{font-size:30px}.category-grid{grid-template-columns:1fr}.category-card{padding:20px}.category-icon{margin-bottom:14px}}.calculator .form-section-title{font-size:16px}.calculator .form-intro{margin:0 0 12px}.calculator .example-notice{padding:6px 10px;margin:0 0 12px;font-size:12px}.parsed-echo{font-size:12px;color:var(--muted);margin-top:5px}.calculator .settings-bar{margin-bottom:12px}.currency-select{min-height:44px}.reference-table{border-collapse:collapse;width:100%;margin:12px 0}.reference-table th,.reference-table td{border-bottom:1px solid var(--border-soft);text-align:left;padding:9px;font-size:14px}.table-scroll{max-width:100%;overflow-x:auto}.input-row select{min-height:44px}@media(max-width:720px){.site-header .wrap{min-height:60px;padding-top:8px;padding-bottom:8px;flex-wrap:wrap}.calculator{margin-top:0}.calc-form{padding-top:14px}.calculator .form-section-title,.calculator .form-intro{display:none}.calculator .settings-bar{margin-bottom:10px}.page-head{padding:16px 0 12px}.page-head .eyebrow{margin:0}.page-head h1{font-size:27px}.page-head .lede{line-height:1.4}.calc-grid{gap:13px}.btn-small,.linkish{min-height:44px}.result-card{scroll-margin-top:14px}.example-notice{line-height:1.4}}.measure-diagram{margin:24px 0;padding:16px;border:1px solid var(--border-soft);border-radius:10px;background:#fff}.measure-diagram svg{display:block;width:100%;max-width:460px;height:auto}.measure-diagram text{fill:var(--text);stroke:none;font:13px system-ui}.measure-diagram figcaption{font-size:12px;color:var(--muted)}@media(max-width:720px){.page-head .eyebrow{display:none}.calculator .example-notice{font-size:11px;line-height:1.35;padding:5px 8px;margin-bottom:10px}.page-head .lede{font-size:13px}.breadcrumb a,.prose li>a,.prose .disclaimer a{display:inline-block;min-height:24px;padding:3px 0}.section-heading>a{display:inline-flex;min-height:24px;align-items:center}}@media(max-width:720px){.page-head{padding:12px 0 8px}.page-head h1{margin:3px 0 4px}.repeat-group>.field-label{margin:0 0 6px}.repeat-row{padding-top:8px}.row-head{margin-bottom:6px}}.input-formats{margin-top:12px}.input-formats>summary{min-height:44px;display:list-item;padding:10px 0;cursor:pointer;font-size:12px;color:var(--muted)}.custom-nav,.custom-footer-nav{display:contents;list-style:none;margin:0;padding:0}.custom-nav li,.custom-footer-nav li{display:contents}.brand img{display:block;max-height:38px;width:auto;max-width:220px}.result-card:focus{outline:3px solid #176c54}.speech-status{font-size:12px;color:var(--muted)}