:root{--ink:#172d30;--muted:#626f65;--green:#234c3e;--mint:#d0edb8;--paper:#f7f8f3;--white:#fff;--line:#e2e7dd;--soft:#edf3e8;--radius:20px;font-family:'Aptos','Segoe UI',Arial,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}
fieldset{margin:0;padding:0;border:0;min-width:0}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button:disabled{cursor:not-allowed;opacity:.5}button,input,select{min-width:0}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-weight:650}p{line-height:1.7}button{color:inherit}[hidden]{display:none!important}:focus-visible{outline:3px solid #3b8053;outline-offset:4px}::selection{background:var(--mint);color:var(--ink)}
.container{width:min(1200px,calc(100% - 96px));margin-inline:auto}.section-space{padding-block:86px}.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:750;display:flex;align-items:center;gap:9px;color:var(--green);line-height:1.7}.little-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#64934b}.button{display:inline-flex;align-items:center;justify-content:center;gap:22px;min-height:48px;padding:13px 21px;border:1px solid transparent;border-radius:9px;font-size:13px;font-weight:650;line-height:1.4;transition:background .2s,transform .2s}.button:hover{transform:translateY(-1px)}.button>span:last-child{font-size:20px;line-height:1}.button-primary,.button-dark{background:var(--green);color:white}.button-primary:hover,.button-dark:hover{background:#183c30}.button-mint{background:var(--mint);color:var(--green)}.button-mint:hover{background:#e1f5ce}.button-quiet{background:white;border-color:var(--line);color:var(--ink)}.text-link{font-size:13px;font-weight:650;display:inline-flex;align-items:center;gap:14px}.text-link:hover{color:#507e39}.sr-only,.skip-link:not(:focus){position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link:focus{position:fixed;z-index:100;top:10px;left:10px;background:var(--ink);color:white;padding:12px;border-radius:8px}
.site-header{border-bottom:1px solid var(--line);position:relative;z-index:10;background:var(--paper)}.header-inner{height:92px;display:flex;align-items:center;gap:48px}.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}.brand-mark{display:grid;place-items:center;background:var(--green);color:var(--mint);border-radius:11px;width:41px;height:44px;font-size:32px;font-weight:500;line-height:1}.brand-name{font-size:20px;line-height:1.05;font-weight:750;letter-spacing:-.8px}.brand-name>span{display:block}.brand-dot{color:#6f9c48}.main-nav{display:flex;align-items:center;gap:31px;margin-left:auto}.main-nav a{font-size:12px;font-weight:600;white-space:nowrap;position:relative}.main-nav a:hover,.main-nav a[aria-current]{color:#46743b}.main-nav a[aria-current]:after{content:'';position:absolute;bottom:-12px;left:0;right:0;height:2px;background:#759c5a}.nav-learn span{margin-left:6px}.header-note{padding-left:27px;border-left:1px solid var(--line);font-size:11px;color:var(--muted);white-space:nowrap}.header-note>span{font-size:16px;color:var(--green);margin-right:7px}.menu-toggle{display:none}
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background-image:radial-gradient(#536e4614 .8px,transparent .8px);background-size:19px 19px}.hero:before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,var(--paper) 0%,#f7f8f3e8 41%,transparent 75%);pointer-events:none}.hero-layout{position:relative;display:grid;grid-template-columns:1.06fr 1fr;align-items:center;gap:60px;padding-top:64px;padding-bottom:65px}.hero-copy{padding-bottom:12px;position:relative}.hero-copy>.eyebrow{margin-bottom:24px;font-size:10px;letter-spacing:2px}.hero h1{font-size:clamp(52px,5.35vw,77px);line-height:1.06;letter-spacing:-4px;margin-bottom:31px;position:relative;font-weight:650}.hero h1>span{color:#49764b}.title-swoosh{position:absolute;left:0;bottom:-17px;max-width:365px;width:87%;height:20px;fill:none;stroke:#bbd79f;stroke-width:4;stroke-linecap:round}.hero-copy>p{font-size:14px;color:var(--muted);line-height:1.9;margin-bottom:29px}.hero-actions{display:flex;align-items:center;gap:25px;flex-wrap:wrap}.hero-actions .button{font-size:12px;min-height:47px;padding-inline:19px}.hero-actions .text-link{font-size:12px}.trust-row{display:flex;gap:21px;margin-top:30px;font-size:10px;color:#616f64}.trust-row>span{display:flex;align-items:center;gap:6px}.trust-row i{font-style:normal;font-size:11px;color:#49764b}.hero-annotation{position:absolute;right:8px;bottom:-60px;color:#7c8877;font-size:11px;transform:rotate(-5deg)}.hero-annotation>span{font-size:36px;display:inline-block;margin-right:6px;transform:rotate(-12deg)}.hero-tool{position:relative}.floating-note{position:absolute;right:-18px;bottom:-18px;transform:rotate(-6deg);font-family:Georgia,serif;font-style:italic;font-size:15px;background:#e0edce;border:1px solid #d1dfc3;padding:12px 18px;border-radius:7px;box-shadow:0 5px 15px #233c2910}.floating-note>span{font-size:20px;margin-left:12px;color:#527943}
.calculator{background:white;border:1px solid #e2e7dd;border-radius:var(--radius);padding:29px;box-shadow:0 14px 40px #253d2b08;min-width:0}.calculator-heading{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:650;margin-bottom:24px}.calculator-icon{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--soft);font-size:22px;font-weight:500;color:var(--green)}.live-badge{display:flex;gap:5px;align-items:center;margin-left:auto;font-size:9px;font-weight:500;color:#596851;white-space:nowrap}.live-badge i{width:5px;height:5px;border-radius:50%;background:#78a759}.field label{font-size:11px;font-weight:600;display:block;margin-bottom:8px}.mode-field{margin-bottom:20px}.field select{width:100%;border:1px solid var(--line);padding:12px 34px 12px 13px;border-radius:8px;background-color:white;color:#4b5b51;font-size:11px;min-height:43px}.fields{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:end;gap:14px}.input-shell{position:relative}.input-shell input{font-size:24px;font-weight:500;width:100%;height:58px;padding:11px 36px 11px 14px;border:1px solid #dfe5da;border-radius:9px;color:var(--ink);background:#fcfdfb;transition:border .2s}.input-shell input:focus{border-color:#7d9d64;outline:2px solid #bed4ad6b;outline-offset:1px}.input-suffix{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:#8a9485;font-size:19px}.field-connector{font-size:12px;color:#819077;padding-bottom:22px}.fields-single{grid-template-columns:1fr}.fields-single input{text-transform:uppercase}.input-hint{color:#596851;font-size:9px;line-height:1.5;margin:10px 0 17px}.calculate-button{width:100%;min-height:46px;justify-content:space-between;font-size:12px;margin-bottom:18px}.calculate-button>span{font-size:21px}.calculation-result{background:#eef4e7;border:1px solid #e4edda;border-radius:11px;padding:20px 21px 17px}.result-label{font-size:11px;color:#4b6544;display:block}.result-number{font-size:53px;letter-spacing:-2px;font-weight:650;display:block;margin-top:5px;line-height:1.18;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.result-extra{font-size:11px;color:#516747;margin:8px 0 0}.result-divider{height:1px;background:#dce5d2;margin:15px 0 11px}.steps-label{display:block;font-size:8px;letter-spacing:1.3px;color:#596851;font-weight:650}.result-steps{margin:5px 0 0;font-size:12px;color:#46613e;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.result-bar{height:5px;border-radius:10px;background:#dbe7cf;margin-top:14px;overflow:hidden}.result-bar>span{display:block;height:100%;background:#6e9850;border-radius:10px;transition:width .25s}.calculator-actions{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px}.calculator-actions button{border:0;background:transparent;color:#596851;font-size:10px;display:flex;align-items:center;gap:5px;padding:8px 0}.calculator-actions button:hover{color:var(--green)}.copy-status{display:block;font-size:10px;color:var(--green);min-height:0}.copy-status:not(:empty){margin-top:8px}.example-list{display:flex;gap:6px;align-items:center;flex-wrap:wrap;padding-top:15px;border-top:1px solid #edf0e8;margin-top:8px;font-size:9px}.example-list>span{margin-right:3px;color:#596851}.example-list button{font-size:9px;border:1px solid #e6eade;border-radius:5px;padding:6px 7px;background:#fafbf7;color:#647459}.example-list button:hover{background:#edf4e6;border-color:#bdcfae}.form-error{font-size:12px;color:#993527;background:#fff0eb;border-radius:7px;padding:12px;line-height:1.5}.has-error .calculation-result{background:#f5f5f0;border-color:#e5e5dc}.has-error input{border-color:#c88e82}.noscript-note{padding:12px;background:#fff5db;border-radius:8px;font-size:12px}.roman-result{font-family:Georgia,'Times New Roman',serif;letter-spacing:1px;font-size:44px}
.section-heading{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:28px}.section-heading h2{font-size:36px;letter-spacing:-1.4px;margin:10px 0 0;line-height:1.2}.section-heading>p{font-size:12px;color:var(--muted);margin:0}.catalog-toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:26px}.filter-tabs{display:flex;gap:5px}.filter-tabs button{padding:9px 14px;background:transparent;border:1px solid transparent;border-radius:6px;color:#596851;font-size:11px;white-space:nowrap}.filter-tabs button:hover{background:#eaf0e4}.filter-tabs button.active{color:var(--green);background:#e6efdc;border-color:#dce7d1;font-weight:600}.filter-tabs button>span{font-size:9px;margin-left:6px;padding:1px 4px;border-radius:4px;background:#cbdcba}.catalog-note{font-size:10px;color:#596851}.tool-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.tool-card{display:block;min-height:229px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;transition:transform .2s,border-color .2s,box-shadow .2s}.tool-card:hover{transform:translateY(-4px);border-color:#aec99a;box-shadow:0 12px 28px #1f38280a}.tool-card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}.tool-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:10px;font-size:27px;color:#4b6e39;background:#edf3e5;font-weight:450}.card-arrow{font-size:19px;color:#596851}.card-category{font-size:8px;text-transform:uppercase;letter-spacing:1.3px;color:#596851;font-weight:600;display:block;margin-bottom:8px}.tool-card h3{font-size:15px;letter-spacing:-.3px;margin:0 0 9px}.tool-card p{font-size:11px;line-height:1.8;color:#596851;margin:0}.roman-card .tool-icon{font-family:Georgia,serif;background:#f5f0e5;color:#917347;font-size:22px}.roman-card .small-symbol{font-size:14px}.roman-feature{background:#193e36;border-radius:21px;padding:53px 63px;display:grid;grid-template-columns:1.05fr 1fr;gap:45px;align-items:center;overflow:hidden;position:relative;color:white}.roman-feature:after{content:'M';position:absolute;right:-15px;top:-75px;font-family:Georgia,serif;font-size:420px;line-height:1;color:#ffffff03;pointer-events:none}.roman-feature .eyebrow{color:#adca9b;font-size:8px;letter-spacing:1.7px}.roman-feature h2{font-size:51px;letter-spacing:-1.5px;line-height:1.08;margin:17px 0 17px}.roman-feature h2>span{color:var(--mint);font-family:Georgia,serif;font-weight:400;font-size:53px;letter-spacing:0}.roman-feature-copy>p{font-size:12px;color:#b3c6b7;max-width:315px;line-height:1.9;margin-bottom:22px}.roman-feature .button{font-size:11px;min-height:44px}.roman-art{position:relative;z-index:1;transform:rotate(3deg);max-width:390px;width:100%;margin-left:auto}.roman-art-note{display:block;font-family:Georgia,serif;font-style:italic;color:#aac39e;font-size:12px;margin-bottom:14px;text-align:right;transform:rotate(-6deg)}.roman-ticket{background:#f8f8f0;border-radius:15px;padding:25px 27px;box-shadow:0 12px 35px #0d241d22;color:var(--ink)}.roman-ticket>span{font-size:8px;letter-spacing:1.5px;color:#596851}.roman-ticket>div{display:flex;align-items:center;justify-content:space-between;padding:20px 0 21px;gap:20px;border-bottom:1px dashed #cbd5c1}.roman-ticket b{font-size:57px;letter-spacing:-3px;font-weight:500}.roman-ticket strong{font-family:Georgia,serif;font-size:41px;font-weight:400;color:#527b3e}.roman-ticket div>span{color:#a9b699;font-size:22px}.roman-ticket>p{margin:13px 0 0;font-size:11px;color:#596851;text-align:center}.roman-ticket i{font-style:normal;margin:0 17px}.roman-chips{display:flex;justify-content:center;gap:8px;margin-top:15px}.roman-chips>span{display:flex;align-items:center;justify-content:center;gap:10px;flex:1;background:#ffffff09;border:1px solid #ffffff1c;border-radius:8px;font-family:Georgia,serif;font-size:21px;padding:9px 12px;color:#d9e7cc}.roman-chips small{font-family:'Segoe UI',sans-serif;font-size:9px;color:#92af8b}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:50px;padding-top:65px;padding-bottom:70px}.principles>div{border-right:1px solid var(--line);padding-right:36px}.principles>div:last-child{border:0}.principle-number{display:block;font-family:Georgia,serif;color:#596851;font-size:18px;margin-bottom:16px}.principles h3{font-size:16px;margin-bottom:10px;letter-spacing:-.2px}.principles p{font-size:12px;color:var(--muted);margin:0;max-width:260px}
.site-footer{background:#eef1e9;border-top:1px solid var(--line)}.footer-main{display:flex;justify-content:space-between;gap:40px;padding-top:44px;padding-bottom:40px}.footer-brand .brand-mark{width:33px;height:36px;font-size:25px;border-radius:8px}.footer-brand .brand-name{font-size:17px}.footer-main>div>p{font-size:11px;color:#596851;margin-top:15px;line-height:1.8}.footer-links{display:flex;gap:85px}.footer-links>div{display:flex;flex-direction:column;gap:10px}.footer-links>div>span{font-size:8px;letter-spacing:1.4px;color:#596851;margin-bottom:3px;font-weight:700}.footer-links a{font-size:11px;color:#5f7156}.footer-links a:hover{text-decoration:underline}.footer-bottom{border-top:1px solid #dce2d5;padding-block:20px;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:9px;color:#596851}.footer-bottom>div{display:flex;gap:20px}.footer-bottom>span:last-child>span{font-size:15px;margin-left:4px;color:#859b72}
.tool-page{padding-bottom:70px}.breadcrumbs{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:11px;color:#596851;padding-top:29px;margin-bottom:34px}.breadcrumbs a:hover{color:var(--green);text-decoration:underline}.breadcrumbs>span[aria-current]{color:#596851}.page-heading{max-width:830px;margin-bottom:30px}.page-heading h1{font-size:48px;letter-spacing:-2px;line-height:1.12;margin:12px 0 17px;font-weight:650}.page-heading>p{font-size:15px;line-height:1.8;color:var(--muted);max-width:700px;margin:0}.tool-layout{display:grid;grid-template-columns:minmax(0,700px) minmax(240px,1fr);gap:34px;align-items:start}.tool-layout .calculator{padding:32px}.tool-layout .calculator-heading{font-size:16px}.tool-layout .field label{font-size:12px}.tool-layout .field select{font-size:13px}.tool-layout .input-shell input{height:66px;font-size:28px}.tool-layout .calculate-button{min-height:50px;font-size:13px}.tool-layout .result-number{font-size:61px}.tool-layout .roman-result{font-size:47px;line-height:1.35}.tool-layout .result-label{font-size:13px}.tool-layout .result-steps{font-size:13px}.tool-layout .calculation-result{padding:23px}.tool-layout .example-list{font-size:10px}.tool-layout .example-list button{font-size:10px;padding:7px}.tool-layout .calculator-actions button{font-size:11px}.howto-card{position:relative;padding:33px 30px;background:#eef1e7;border:1px solid #e2e9d9;border-radius:15px;overflow:hidden}.outline-symbol{position:absolute;right:11px;top:3px;font-size:125px;color:#e0e8d5;line-height:1;font-weight:300;pointer-events:none}.howto-card .eyebrow{font-size:8px;position:relative}.howto-card h2{font-size:29px;font-weight:550;letter-spacing:-.8px;line-height:1.2;margin:16px 0 24px;position:relative}.howto-card ol{counter-reset:steps;list-style:none;padding:0;margin:0}.howto-card li{counter-increment:steps;position:relative;padding-left:32px;font-size:12px;line-height:1.6;color:#596851;margin-bottom:21px}.howto-card li:before{content:counter(steps);position:absolute;left:0;top:0;border:1px solid #cddbc1;border-radius:50%;width:20px;height:20px;display:grid;place-items:center;font-size:9px;color:#6d8556}.privacy-note{border-top:1px solid #dce6d2;padding-top:19px;margin-top:25px;font-size:10px;color:#596851;line-height:2}.privacy-note>span{color:#76915d;margin-right:5px}.article-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(250px,1fr);gap:65px;align-items:start;margin-top:64px}.guide{min-width:0}.guide>section{margin-bottom:40px}.guide h2{font-size:25px;letter-spacing:-.8px;line-height:1.3;margin-bottom:17px}.guide p{color:#65715f;font-size:14px;line-height:1.9;margin-bottom:17px}.guide a{color:#416c39;text-decoration:underline;text-underline-offset:3px}.formula{font-family:'Cascadia Code',Consolas,monospace;font-size:13px;line-height:1.7;padding:19px 23px;background:#edf2e7;border-left:3px solid #aac28e;border-radius:0 8px 8px 0;margin:21px 0;overflow-wrap:anywhere}.related-panel{padding-top:4px;position:sticky;top:24px}.related-panel>.eyebrow{font-size:8px}.related-panel h2{font-size:20px;letter-spacing:-.5px;margin:10px 0 19px}.related-panel>a{display:flex;align-items:center;gap:12px;padding:15px 0;border-top:1px solid var(--line);font-size:12px}.related-panel>a>span:last-child{margin-left:auto;color:#8b9d7b}.related-panel>a:hover{color:#50763d}.related-icon{width:29px;font-size:18px;font-family:Georgia,serif;color:#6f885e}.related-tip{background:#eef2e7;border-radius:10px;padding:19px;display:flex;align-items:center;gap:13px;margin-top:22px}.related-tip>span{font-size:27px;color:#86a367}.related-tip p{font-size:11px;color:#596851;line-height:1.7;margin:0}.related-tip strong{color:#5c7150;font-weight:600}.faq-section{margin-top:49px;padding-top:30px;border-top:1px solid var(--line)}.faq-section>.eyebrow{font-size:8px}.faq-section h2{margin-top:11px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list 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