@font-face{font-family:Bricolage Grotesque Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(../media/bricolage-grotesque-vietnamese-wght-normal.03f_1bxrvnkfd.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Bricolage Grotesque Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(../media/bricolage-grotesque-latin-ext-wght-normal.37g1whwfgt7kp.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Bricolage Grotesque Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(../media/bricolage-grotesque-latin-wght-normal.1iqnhac4m3hwo.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Figtree Variable;font-style:normal;font-display:swap;font-weight:300 900;src:url(../media/figtree-latin-ext-wght-normal.28krudoh3z7og.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Figtree Variable;font-style:normal;font-display:swap;font-weight:300 900;src:url(../media/figtree-latin-wght-normal.08sr_7r2rzxl4.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
:root{--paper:#f2f5f3;--surface:#fff;--ink:#1a2b27;--muted:#586a64;--line:#d3dbd7;--brand:#0f5247;--brand-ink:#fff;--focus:#1c7ed6;--res-bg:#0f3d35;--res-ink:#f0f6f3;--res-muted:#a9c4bb;--res-line:#2b5a50;--res-good:#7fe0a7;--res-caution:#f3c969;--res-poor:#ff9d8f;--res-neutral:#cfe3dc;--display:"Bricolage Grotesque Variable", "Arial Narrow", Arial, sans-serif;--body:"Figtree Variable", "Segoe UI", Helvetica, Arial, sans-serif;--step--1:.875rem;--step-0:1rem;--step-1:1.25rem;--step-2:1.563rem;--step-3:1.953rem;--step-4:clamp(2.2rem, 1.4rem + 3.2vw, 3.6rem);--radius:6px;--wrap:68rem;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--paper:#0e1715;--surface:#16211e;--ink:#e4ece9;--muted:#9bada6;--line:#2a3a35;--brand:#6fcfb6;--brand-ink:#06231d;--focus:#74b9ff;--res-bg:#1c2f2a;--res-line:#35524a;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-padding-top:1rem}body{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:var(--step-0);font-variant-numeric:tabular-nums;margin:0;line-height:1.55}h1,h2,h3{font-family:var(--display);letter-spacing:-.01em;margin:0;font-weight:650;line-height:1.12}h1{font-size:var(--step-4);letter-spacing:-.025em}h2{font-size:var(--step-2)}h3{font-size:var(--step-1)}p{margin:0}a{color:var(--brand);text-underline-offset:.18em}a:hover{text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:2px}.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:clamp(1rem,4vw,2rem)}.prose{max-width:42rem}.prose>*+*{margin-top:1rem}.prose h2{margin-top:2.5rem}.prose ul{margin-bottom:0;padding-left:1.2rem}.prose li+li{margin-top:.4rem}.lede{font-size:var(--step-1);color:var(--muted);max-width:40rem;line-height:1.45}.site-header{border-bottom:1px solid var(--line);background:var(--surface)}.site-header-inner{justify-content:space-between;align-items:center;gap:1rem;min-height:3.75rem;display:flex}.wordmark{font-family:var(--display);font-weight:750;font-size:var(--step-1);letter-spacing:-.02em;color:var(--ink);text-decoration:none}.site-header nav{gap:1.5rem;display:flex}.site-header nav a{color:var(--ink);font-weight:500;text-decoration:none}.site-header nav a:hover{text-decoration:underline}.site-footer{border-top:1px solid var(--line);background:var(--surface);margin-top:5rem;padding-block:3rem 1.5rem}.site-footer-inner{grid-template-columns:1.4fr 1fr .7fr;gap:2rem;display:grid}.site-footer h2{font-family:var(--body);font-size:var(--step--1);color:var(--muted);letter-spacing:0;margin-bottom:.6rem;font-weight:600}.site-footer ul{margin:0;padding:0;list-style:none}.site-footer li+li{margin-top:.35rem}.site-footer a{color:var(--ink);text-decoration:none}.site-footer a:hover{text-decoration:underline}.footer-note{color:var(--muted);font-size:var(--step--1);max-width:26rem;margin-top:.75rem}.footer-base{color:var(--muted);font-size:var(--step--1);margin-top:2.5rem}.page-top{padding-block:clamp(2rem,5vw,3.5rem) 1.75rem}.page-top h1+.lede{margin-top:1rem}.crumbs{font-size:var(--step--1);color:var(--muted);margin-bottom:1rem}.crumbs a{color:var(--muted)}.worksheet{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);display:grid;overflow:hidden}.worksheet-inputs{padding:clamp(1rem,3vw,1.75rem)}.worksheet-result{background:var(--res-bg);color:var(--res-ink);padding:clamp(1.25rem,3vw,2rem)}.worksheet-result-inner{position:sticky;top:1.25rem}.field-group{border:0;min-width:0;margin:0;padding:0}.field-group+.field-group{border-top:1px solid var(--line);margin-top:1.5rem;padding-top:1.5rem}.field-group legend{float:left;width:100%;font-family:var(--display);font-weight:650;font-size:var(--step-1);margin-bottom:.85rem;padding:0}.field-grid{clear:both;grid-template-columns:repeat(auto-fill,minmax(11.5rem,1fr));align-items:start;gap:.9rem 1rem;display:grid}.field label{font-weight:500;font-size:var(--step--1);margin-bottom:.3rem;display:block}.field-box{border:1px solid var(--muted);border-radius:var(--radius);background:var(--paper);align-items:center;padding-inline:.65rem;display:flex}.field-box:focus-within{outline:3px solid var(--focus);outline-offset:1px}.field-box input{min-width:0;color:inherit;font:inherit;background:0 0;border:0;outline:none;flex:1;padding:.6rem .25rem;font-size:1.0625rem;font-weight:500}.affix{color:var(--muted);white-space:nowrap;font-size:var(--step--1)}.hint{color:var(--muted);margin-top:.3rem;font-size:.8125rem;line-height:1.35}.answer-label{color:var(--res-muted);font-weight:500}.answer-value{font-family:var(--display);letter-spacing:-.03em;overflow-wrap:anywhere;margin-top:.35rem;font-size:clamp(2.6rem,1.6rem + 4vw,4.25rem);font-weight:700;line-height:1}.answer-note{color:var(--res-muted);margin-top:.6rem}.answer.tone-good .answer-value{color:var(--res-good)}.answer.tone-caution .answer-value{color:var(--res-caution)}.answer.tone-poor .answer-value{color:var(--res-poor)}.scale{margin-top:1.5rem}.scale-track{background:var(--res-line);border-radius:999px;height:.6rem;display:flex;position:relative}.scale-zone{opacity:.85;height:100%}.scale-zone+.scale-zone{border-left:2px solid var(--res-bg)}.scale-zone:first-child{border-radius:999px 0 0 999px}.scale-zone:nth-last-child(2){border-radius:0 999px 999px 0}.scale-zone.tone-good{background:var(--res-good)}.scale-zone.tone-caution{background:var(--res-caution)}.scale-zone.tone-poor{background:var(--res-poor)}.scale-zone.tone-neutral{background:var(--res-neutral)}.scale-marker{background:var(--res-ink);border:3px solid var(--res-bg);width:1.15rem;height:1.15rem;box-shadow:0 0 0 2px var(--res-ink);border-radius:50%;transition:left .18s ease-out;position:absolute;top:50%;transform:translate(-50%,-50%)}.scale-ticks{height:1.25rem;color:var(--res-muted);margin-top:.45rem;font-size:.75rem;position:relative}.scale-ticks span{position:absolute;top:0}.scale-ticks span:first-child{left:0}.scale-ticks span:last-child{right:0}.scale-tick-abs{transform:translate(-50%)}.scale-reading{color:var(--res-neutral);margin-top:.35rem;font-weight:500}.scale-reading.tone-good{color:var(--res-good)}.scale-reading.tone-caution{color:var(--res-caution)}.scale-reading.tone-poor{color:var(--res-poor)}.working{border-top:1px solid var(--res-line);margin:1.5rem 0 0}.working-row{border-bottom:1px solid var(--res-line);justify-content:space-between;gap:1rem;padding-block:.55rem;display:flex}.working-row dt{color:var(--res-muted)}.working-row dd{white-space:nowrap;margin:0;font-weight:500}.working-row.strong dt,.working-row.strong dd{color:var(--res-ink);font-weight:700}.ratios{grid-template-columns:1fr 1fr;gap:1rem 1.25rem;margin:1.5rem 0 0;display:grid}.ratios dt{color:var(--res-muted);font-size:var(--step--1)}.ratios dd{font-family:var(--display);font-size:var(--step-2);margin:.1rem 0 0;font-weight:650;line-height:1.15}.ratios small{font-family:var(--body);color:var(--res-muted);margin-top:.15rem;font-size:.8125rem;font-weight:400;display:block}.split{margin-top:1.5rem}.split-track{border-radius:999px;gap:2px;height:.6rem;display:flex;overflow:hidden}.split-a,.key-a{background:var(--res-good)}.split-b,.key-b{background:var(--res-caution)}.split-key{font-size:var(--step--1);color:var(--res-muted);flex-wrap:wrap;gap:.4rem 1.25rem;margin-top:.6rem;display:flex}.split-key i{border-radius:50%;width:.65rem;height:.65rem;margin-right:.4rem;display:inline-block}.tool-body{gap:3rem;margin-top:3rem;display:grid}.formula{font-family:var(--display);font-size:var(--step-1);border-left:4px solid var(--brand);background:var(--surface);border-radius:0 var(--radius) var(--radius) 0;padding:1rem 1.25rem;font-weight:600;overflow-x:auto}.terms{margin:1.25rem 0 0}.terms dt{font-weight:600}.terms dd{color:var(--muted);margin:.15rem 0 0}.terms div+div{margin-top:.9rem}.steps{margin:0;padding-left:1.3rem}.steps li+li{margin-top:.6rem}.steps li:last-child{font-weight:600}.faq details{border-bottom:1px solid var(--line)}.faq details:first-of-type{border-top:1px solid var(--line)}.faq summary{cursor:pointer;padding:.9rem 0;font-weight:600;list-style-position:inside}.faq details p{color:var(--muted);max-width:40rem;padding-bottom:1rem}.tool-index{border-top:1px solid var(--line);margin:1.25rem 0 0;padding:0;list-style:none}.tool-index li{border-bottom:1px solid var(--line)}.tool-index a{color:var(--ink);grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:.25rem 2rem;padding:1rem .25rem;text-decoration:none;display:grid}.tool-index a:hover{background:var(--surface)}.tool-index .q{font-family:var(--display);font-size:var(--step-1);font-weight:600}.tool-index .t{color:var(--brand);text-underline-offset:.18em;align-self:center;font-weight:500;text-decoration:underline}.tool-index.compact a{grid-template-columns:1fr}.section{margin-top:4rem}.section>h2+p{color:var(--muted);max-width:40rem;margin-top:.6rem}.sequence{counter-reset:step;grid-template-columns:repeat(auto-fit,minmax(13rem,1fr));gap:1.25rem 2rem;margin:1.5rem 0 0;padding:0;list-style:none;display:grid}.sequence li{counter-increment:step;border-top:2px solid var(--ink);padding-top:.9rem}.sequence li:before{content:counter(step) ". ";font-family:var(--display);font-weight:700}.sequence strong{font-family:var(--display);font-weight:650}.sequence p{color:var(--muted);margin-top:.3rem}.ad-slot{min-height:280px;margin-block:.5rem}.ad-label{color:var(--muted);margin-bottom:.25rem;font-size:.75rem}.ad-placeholder{border:1px dashed var(--muted);border-radius:var(--radius);color:var(--muted);place-items:center;display:grid}@media (max-width:52rem){.worksheet,.site-footer-inner,.tool-index a{grid-template-columns:1fr}.tool-index .t{align-self:start}}@media (prefers-reduced-motion:reduce){.scale-marker{transition:none}}