@layer theme{:root,:host{--font-sans:-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-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--radius-lg:.5rem;--default-font-family:var(--font-sans);--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 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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{.absolute{position:absolute}.relative{position:relative}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.block{display:block}.flex{display:flex}.grid{display:grid}.inline{display:inline}.table{display:table}}:root{--bg:#f5f7f2;--surface:#fff;--surface-soft:#eef4ee;--ink:#15201c;--muted:#4c5851;--line:#dce5de;--brand:#164c3d;--brand-2:#1f7a5f;--accent:#dffb88;--accent-strong:#bde65a;--shadow:0 24px 70px #1c3f331f;--radius-lg:30px;--radius-md:20px;--radius-sm:14px;--container:1180px;--space-section:76px;--space-section-mobile:48px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);text-rendering:optimizelegibility;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.container{width:min(calc(100% - 32px), var(--container));margin:0 auto}.site-header{z-index:50;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#f5f7f2e6;border-bottom:1px solid 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button{color:#5d6d66;background:0 0;border:0;border-radius:9px;padding:8px 12px;font-size:12px;font-weight:800}.direction-switch button.is-active{color:var(--brand);background:#fff;box-shadow:0 2px 8px #0000000d}.calculator-inputs{grid-template-columns:1fr auto 1fr;align-items:end;gap:14px;display:grid}.input-shell{gap:8px;display:grid}.input-shell>span{color:#52645b;font-size:12px;font-weight:800}.input-shell>div{background:#f7faf8;border:1px solid #cfdcd4;border-radius:16px;align-items:center;min-height:68px;padding:0 16px;transition:all .18s;display:flex}.input-shell>div:focus-within{background:#fff;border-color:#5fa88a;box-shadow:0 0 0 4px #2e85631a}.input-shell input{width:100%;min-width:0;color:var(--ink);letter-spacing:-.04em;font-variant-numeric:tabular-nums;background:0 0;border:0;outline:0;font-size:30px;font-weight:850}.input-shell b{color:#607169;font-size:18px}.input-connector{width:38px;height:38px;color:var(--brand-2);background:#edf3ef;border-radius:50%;place-items:center;margin-bottom:15px;font-weight:900;display:grid}.result-panel{color:#fff;background:linear-gradient(135deg,#153f34 0%,#102d27 100%);border-radius:22px;margin-top:18px;padding:22px;position:relative;overflow:hidden}.result-panel:after{content:"%";color:#ffffff09;pointer-events:none;font-size:180px;font-weight:950;position:absolute;bottom:-72px;right:-10px;transform:rotate(-12deg)}.result-head{z-index:1;justify-content:space-between;align-items:flex-start;gap:24px;display:flex;position:relative}.result-head>div:first-child>span{color:#aac1b7;text-transform:uppercase;letter-spacing:.11em;font-size:11px;font-weight:900}.result-head strong{letter-spacing:-.065em;font-variant-numeric:tabular-nums;margin:2px 0 6px;font-size:clamp(42px,6vw,68px);line-height:1;animation:.22s resultPop;display:block}.result-head p{color:#d8e4df;max-width:690px;margin:0;font-size:13px;line-height:1.55}.result-actions{gap:8px;display:flex}.result-actions button{color:#fff;background:#ffffff12;border:1px solid #ffffff26;border-radius:10px;padding:9px 11px;font-size:11px;font-weight:800;transition:background .15s}.result-actions button:hover{background:#ffffff24}.result-actions button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.percent-visual{z-index:1;margin-top:22px;position:relative}@keyframes resultPop{0%{opacity:.5;transform:translateY(4px)}to{opacity:1;transform:none}}.visual-labels{color:#99b1a6;grid-template-columns:1fr 1fr 1fr;font-size:10px;display:grid}.visual-labels strong{color:var(--accent);text-align:center}.visual-labels span:last-child{text-align:right}.visual-track{background:#ffffff1f;border-radius:999px;height:11px;margin-top:7px;overflow:hidden}.visual-track span{background:linear-gradient(90deg, #9fda70, var(--accent));border-radius:inherit;height:100%;transition:width 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14px;font-size:12px;font-weight:700}.example-grid.cols-3{grid-template-columns:repeat(3,1fr)}.section-footnote{color:var(--muted);margin-top:18px;font-size:13px}.section{padding:var(--space-section) 0}.compact-section{padding-top:0}.section-heading{margin-bottom:28px}.section-heading h2,.visual-copy h2,.lab-copy h2,.table-copy h2{letter-spacing:-.055em;margin:7px 0 0;font-size:clamp(32px,4.6vw,52px);line-height:1.04}.section-heading p,.visual-copy p,.lab-copy p,.table-copy p{color:var(--muted);line-height:1.7}.split-heading{grid-template-columns:1.1fr .9fr;align-items:end;gap:64px;display:grid}.split-heading>p{max-width:520px;margin:0}.centered-heading{text-align:center;max-width:760px;margin-left:auto;margin-right:auto}.centered-heading p{max-width:650px;margin:12px auto 0}.tool-grid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.tool-card{border:1px solid var(--line);background:#fff;border-radius:20px;grid-template-columns:56px 1fr 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small{font-size:10px}.ad-slot.compact{min-height:250px}.visual-section{grid-template-columns:.85fr 1.15fr;align-items:center;gap:70px;display:grid}.visual-copy p{max-width:520px}.mini-points{flex-wrap:wrap;gap:9px;margin-top:18px;display:flex}.mini-points span{color:#4f665b;background:#ebf3ed;border-radius:999px;padding:8px 10px;font-size:11px;font-weight:800}.concept-card{color:#fff;box-shadow:var(--shadow);background:#133c32;border-radius:30px;padding:30px;position:relative;overflow:hidden}.concept-card:after{content:"%";color:#ffffff0a;font-size:150px;font-weight:950;position:absolute;top:-30px;right:-14px}.concept-total,.concept-part{z-index:1;gap:4px;display:grid;position:relative}.concept-total span,.concept-part span{color:#b7cbc2;text-transform:uppercase;letter-spacing:.1em;font-size:11px;font-weight:850}.concept-total strong,.concept-part strong{letter-spacing:-.05em;font-size:40px}.concept-total small,.concept-part small{color:#89a69a}.concept-arrow{height:70px;color:var(--accent);align-items:center;gap:14px;font-weight:900;display:flex}.concept-arrow i{background:linear-gradient(90deg, var(--accent), #dffb881a);flex:1;height:1px;position:relative}.concept-arrow i:after{content:"";border-top:2px solid var(--accent);border-right:2px solid var(--accent);width:8px;height:8px;position:absolute;top:-4px;right:0;transform:rotate(45deg)}.concept-part{width:60%}.concept-bar{background:#ffffff1a;border-radius:999px;height:14px;margin-top:24px;overflow:hidden}.concept-bar span{background:var(--accent);width:25%;height:100%;display:block}.concept-card>p{color:#b9ccc4;margin:16px 0 0;font-size:12px}.formula-grid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.formula-card{border:1px solid var(--line);background:#fff;border-radius:20px;padding:22px;position:relative;overflow:hidden}.formula-number{color:#d8e1dc;font-size:28px;font-weight:900;position:absolute;top:16px;right:18px}.formula-card 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