@layer theme{:root,:host{--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:Arial,Helvetica,sans-serif;--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.fixed{position:fixed}.rounded{border-radius:.25rem}}:root{--ink:#182f2a;--forest:#153d36;--muted:#586b63;--lime:#c5ef9b;--paper:#f7f8f3;--line:#dce3da;--white:#fff;--warning:#85500d;--warning-bg:#fff3da;--radius:14px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font-family:Arial,Helvetica,sans-serif;font-size:14px;line-height:1.55}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,summary{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}button{transition:background .15s,color .15s,border-color .15s}button:focus-visible,a:focus-visible,summary:focus-visible,select:focus-visible{outline-offset:4px;outline:3px solid #63983c}h1,h2,h3,h4,p{margin:0}svg{display:block}::selection{background:var(--lime);color:var(--ink)}.skip-link{z-index:10;background:var(--forest);color:#fff;padding:12px;position:absolute;top:-80px;left:16px}.skip-link:focus{top:12px}.site-header{background:var(--white);border-bottom:1px solid var(--line)}.header-inner{justify-content:space-between;align-items:center;gap:24px;max-width:1280px;margin:auto;padding:19px 32px;display:flex}.brand{letter-spacing:-1.3px;white-space:nowrap;align-items:center;font-size:26px;font-weight:750;line-height:1;display:inline-flex}.brand-mark{background:var(--forest);color:var(--lime);border-radius:9px;width:36px;height:36px;margin-right:10px;padding:5px}.brand-mark svg{width:100%;height:100%}.brand-period{color:#5b8746}.header-inner nav{align-items:center;gap:30px;font-size:13px;font-weight:600;display:flex}.desktop-nav:hover,.inline-link:hover{color:#447431}.header-cta{background:var(--forest);color:var(--white);border-radius:6px;align-items:center;gap:24px;padding:11px 17px;display:flex}.header-cta:hover{background:#26584b}.header-cta svg{width:17px;height:17px}.tools-menu{position:relative}.tools-menu summary{align-items:center;gap:14px;list-style:none;display:flex}.tools-menu summary::-webkit-details-marker{display:none}.tools-dropdown{background:var(--white);border:1px solid var(--line);z-index:5;border-radius:10px;min-width:240px;padding:8px;position:absolute;top:35px;right:0;box-shadow:0 8px 30px #182f2a15}.tools-dropdown a{border-radius:5px;justify-content:space-between;gap:20px;padding:11px 12px;display:flex}.tools-dropdown a:hover{background:var(--paper)}.tools-dropdown svg{width:16px}.site-main{max-width:1280px;margin:auto;padding:0 32px}.hero{padding:24px 0 30px}.hero.home-hero{padding-top:42px}.hero-content{justify-content:space-between;align-items:center;gap:60px;display:flex}.eyebrow{letter-spacing:1.5px;color:#4a6a56;font-size:10px;font-weight:700;line-height:1.6}.hero .eyebrow{align-items:center;gap:8px;margin-bottom:13px;display:flex}.tiny-cross{color:#618b3f;font-size:18px;line-height:12px}.hero h1{letter-spacing:-2px;max-width:850px;font-size:clamp(32px,3.5vw,48px);font-weight:550;line-height:1.1}.hero-intro{color:var(--muted);max-width:680px;margin-top:16px;font-size:15px;line-height:1.7}.hero-note{min-width:180px;color:var(--muted);border-left:1px solid #c8d3c6;flex-shrink:0;padding-left:23px;font-size:13px}.note-rule{background:#79a74d;width:28px;height:3px;margin-bottom:14px;display:block}.free-label{letter-spacing:1.1px;color:var(--forest);margin-top:18px;font-size:9px;font-weight:700;display:block}.breadcrumb{color:var(--muted);gap:11px;margin-bottom:23px;font-size:11px;display:flex}.breadcrumb a:hover{text-decoration:underline}.planner{background:var(--white);border-radius:var(--radius);border:1px solid #cfdace;scroll-margin-top:20px;overflow:hidden;box-shadow:0 10px 35px #233d2906}.planner-top{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;min-height:51px;padding:12px 24px;font-size:12px;display:flex}.planner-top>div{align-items:center;gap:8px;display:flex}.project-dot{background:#5e8c3d;border-radius:50%;width:6px;height:6px;display:inline-block}.project-label{letter-spacing:1px;color:#6f7d74;margin-left:4px;font-size:9px}.text-button{color:#476741;text-underline-offset:3px;background:0 0;border:0;padding:0;font-size:11px}.text-button:hover{text-decoration:underline}.planner-columns{grid-template-columns:1.04fr 1fr;display:grid}.inputs-panel{border-right:1px solid var(--line);min-width:0}.section-tabs{border-bottom:1px solid var(--line);background:#fcfcf9;grid-template-columns:repeat(3,1fr);gap:14px;padding:0 20px;display:grid}.section-tabs button{color:#647168;text-align:left;white-space:nowrap;background:0 0;border:0;border-bottom:2px solid #0000;justify-content:flex-start;align-items:flex-start;gap:8px;padding:19px 0 15px;font-size:12px;font-weight:600;display:flex}.section-tabs button[aria-selected=true]{border-color:var(--forest);color:var(--forest)}.tab-number{color:#6e815d;margin-top:2px;font-family:monospace;font-size:9px;font-weight:400}.section-tabs small{color:#68776c;margin-top:4px;font-size:10px;font-weight:400;line-height:1.5;display:block}.input-body{padding:24px}.input-body:focus{outline:none}.input-heading h3{letter-spacing:-.5px;font-size:19px;font-weight:600}.input-heading>p{color:var(--muted);max-width:400px;margin-top:5px;font-size:12px}.field-grid{grid-template-columns:1fr 1fr;gap:21px 20px;margin-top:23px;display:grid}.field{min-width:0}.field label{margin-bottom:7px;font-size:11px;font-weight:600;display:block}.input-wrap{background:#fff;border:1px solid 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select{width:100%;color:var(--ink);background:#fff;border:1px solid #cbd5c9;border-radius:5px;padding:10px 8px;font-size:12px}.input-note{color:#536a49;background:#f0f4eb;border-radius:5px;align-items:flex-start;gap:8px;margin-top:24px;padding:12px;font-size:11px;display:flex}.input-note>span{line-height:1.7}.input-note p{line-height:1.65}.input-bottom{flex-direction:column;align-items:flex-start;gap:18px;margin-top:20px;display:flex}.save-notice{color:#64755e;max-width:100%;font-size:10px}.next-button{width:100%;color:var(--forest);background:#fbfcf8;border:1px solid #cbd8c6;border-radius:5px;justify-content:space-between;align-items:center;padding:10px 12px;font-size:11px;display:flex}.next-button:hover{background:#edf4e5}.shared-context{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:10px;padding:14px 0 12px;font-size:11px;display:flex}.shared-context .text-button{font-size:10px}.results-panel{background:#f6f8f1;min-width:0;padding:25px 27px 18px}.result-heading{justify-content:space-between;align-items:center;display:flex}.result-heading .eyebrow{color:#5e7254;font-size:9px}.result-heading h3{letter-spacing:-.8px;margin-top:5px;font-size:25px;font-weight:500}.live-dot{background:#629545;border-radius:50%;width:8px;height:8px;margin-right:5px;box-shadow:0 0 0 5px #e2efd7}.overall{color:#3b592e;background:#e7f0df;border:1px solid #d4e2c8;border-radius:5px;align-items:center;gap:9px;margin:17px 0 20px;padding:11px 12px;display:flex}.overall>span{border:1px solid #b8cfa5;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:20px;height:20px;font-size:14px;display:flex}.overall strong{font-size:11px;font-weight:600}.overall small{color:#506746;margin-top:2px;font-size:9px;display:block}.overall.has-warning{background:var(--warning-bg);color:var(--warning);border-color:#ecd9b2}.overall.has-warning>span{border-color:#d6b87b}.overall.has-warning small{color:#7f602d}.stats-grid{border-bottom:1px solid 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5px;font-size:8px;font-weight:700;line-height:1.4;display:inline-flex}.badge.pass{color:#3f642b;background:#ebf3e4}.badge.warning{color:var(--warning);background:var(--warning-bg);border-color:#e7d3a8}.result-units{color:#66795e;border-top:1px solid #dce3d5;margin-top:12px;padding-top:11px;font-size:9px;line-height:1.6}.summary-bar{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;padding:20px 24px;display:flex}.summary-bar strong{font-size:12px;font-weight:600}.summary-bar p{color:#66745e;margin-top:3px;font-size:10px}.summary-actions{flex-shrink:0;gap:8px;display:flex}.summary-actions button{color:var(--forest);background:#fff;border:1px solid #d3ddce;border-radius:5px;padding:9px 12px;font-size:11px}.summary-actions button:hover{background:#edf4e7}.summary-actions .primary-button{background:var(--forest);color:#fff;border-color:var(--forest);align-items:center;gap:16px;display:flex}.summary-actions .primary-button:hover{background:#26584b}.action-message{color:#526b47;padding:0 24px;font-size:11px}.action-message:not(:empty){padding-bottom:14px}.summary-text{color:#5f7254;padding:0 24px 15px;font-size:10px}.summary-text summary{text-underline-offset:3px;width:fit-content;text-decoration:underline}.summary-text pre,.print-sheet pre{white-space:pre-wrap;overflow-wrap:anywhere;font-family:inherit;line-height:1.8}.summary-text pre{border:1px solid var(--line);background:#f7f9f3;border-radius:5px;padding:14px;font-size:11px}.print-sheet{display:none}.invalid-results{min-height:400px;padding:15px 0}.invalid-results h3{margin:12px 0;font-size:24px;line-height:1.25}.invalid-results p{color:var(--muted);margin-bottom:20px;font-size:12px}.invalid-results ul{margin:0;padding:0;list-style:none}.invalid-results li{border-top:1px solid #e2d4b7;padding:10px 0}.invalid-results li button{color:#844b11;text-align:left;text-underline-offset:3px;background:0 0;border:0;font-size:12px;text-decoration:underline}.privacy-strip{border-bottom:1px solid var(--line);color:#7d8c71;justify-content:space-between;gap:20px;padding:22px 2px 27px;font-family:monospace;font-size:10px;display:flex}.privacy-strip strong{color:#64735b;margin-left:8px;font-family:Arial,Helvetica,sans-serif;font-size:10px;font-weight:400}.method-section{border-bottom:1px solid var(--line);grid-template-columns:1fr 2.2fr;gap:60px;padding:65px 0;display:grid}.section-caption p{color:#6b7c62;margin-top:15px;font-size:14px;line-height:1.7}.method-content h2,.faq-section h2,.related-heading h2{letter-spacing:-1px;font-size:29px;font-weight:500;line-height:1.2}.method-content>p{color:var(--muted);margin-top:21px;font-size:13px;line-height:1.95}.formula-box{background:#f0f4e9;border:1px solid #d6dfce;border-left:3px solid #6f954f;border-radius:0 6px 6px 0;margin-top:25px;padding:19px 22px}.formula-box h3{margin-bottom:12px;font-size:11px;font-weight:600}.formula-box p{color:#4a6541;overflow-wrap:anywhere;margin-top:8px;font-size:11px;line-height:1.9}.formula-box code{font-family:Consolas,monospace}.method-content .unit-explanation{margin-top:16px;font-size:11px;line-height:1.8}.example{margin-top:29px}.example p{color:#52664c;margin-top:10px;font-size:13px;line-height:1.9}.faq-section{border-bottom:1px solid var(--line);grid-template-columns:1fr 2.2fr;gap:60px;padding:55px 0 60px;display:grid}.faq-section h2{margin-top:12px;font-size:27px}.faqs details{border-bottom:1px solid var(--line);padding:17px 0}.faqs details:first-child{padding-top:0}.faqs summary{justify-content:space-between;align-items:center;gap:20px;font-size:13px;font-weight:500;list-style:none;display:flex}.faqs summary::-webkit-details-marker{display:none}.faqs summary>span{color:#6e895a;font-size:21px;font-weight:400}.faqs details[open] summary>span{transform:rotate(45deg)}.faqs details>p{color:var(--muted);margin-top:14px;padding-right:25px;font-size:12px;line-height:1.9}.related-section{padding:52px 0 60px}.related-heading{justify-content:space-between;align-items:flex-end;gap:25px;display:flex}.related-heading h2{margin-top:12px;font-size:27px}.inline-link{color:#4b6b3c;white-space:nowrap;align-items:center;gap:12px;font-size:11px;display:flex}.inline-link svg{width:18px}.related-links{grid-template-columns:repeat(3,1fr);gap:12px;margin-top:25px;display:grid}.related-links>a{border:1px solid var(--line);background:#fafbf7;border-radius:6px;justify-content:space-between;align-items:center;gap:15px;padding:17px;font-size:13px;transition:background .15s;display:flex}.related-links>a:hover{background:#edf3e5;border-color:#b3c5a6}.related-links small{color:#687b5e;margin-top:6px;font-size:10px;display:block}.related-links svg{color:#5d7b4b;flex-shrink:0;width:19px}.site-footer{border-top:1px solid var(--line);color:#5c7054;justify-content:space-between;align-items:center;gap:30px;max-width:1280px;margin:auto;padding:31px 32px 35px;display:flex}.site-footer .brand{color:var(--forest);font-size:21px}.site-footer .brand svg{width:26px;height:26px;margin-right:8px}.site-footer p{margin-top:9px;font-size:11px}.site-footer>div:last-child{text-align:right}.site-footer>div:last-child p{margin-top:0}.site-footer small{margin-top:5px;font-size:9px;display:block}.mobile-estimate{display:none}@media (min-width:1500px){.header-inner,.site-main,.site-footer{max-width:1360px}.hero h1{font-size:52px}.hero.home-hero{padding-top:47px;padding-bottom:36px}.field-hint,.check p{font-size:11px}.field label{font-size:12px}}@media (max-width:1000px){.site-main{padding:0 24px}.header-inner{padding:17px 24px}.hero-note{display:none}.hero-content{gap:0}.hero h1{font-size:40px}.hero-intro{max-width:640px}.planner-columns{grid-template-columns:1fr 1fr}.section-tabs{gap:10px;padding:0 14px}.section-tabs 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