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span{font-family:var(--font-mono);font-size:var(--text-xs);margin-left:auto}.archive-label{color:var(--muted);font-family:var(--font-mono);font-size:var(--text-xs);text-transform:uppercase;justify-content:space-between;padding-bottom:15px;display:flex}.archive-label i{font-style:normal}.archive-tools .tool-card{min-height:320px}.guide-archive{grid-template-columns:1fr 1fr;gap:70px 48px;padding-block:90px;display:grid}.guide-archive .guide-card:first-child{border-bottom:1px solid var(--line-strong);grid-column:1/-1;grid-template-columns:1.25fr .75fr;align-items:center;gap:48px;padding-bottom:70px;display:grid}.guide-archive .guide-card:first-child .guide-card-image{aspect-ratio:16/9}.breadcrumbs{color:var(--muted);font-size:var(--text-xs);margin-bottom:48px}.breadcrumbs ol{flex-wrap:wrap;gap:8px;padding:0;list-style:none;display:flex}.breadcrumbs li:not(:last-child):after{content:"/";color:var(--faint);margin-left:8px}.breadcrumbs a:hover{color:var(--accent)}.tool-hero{padding-top:38px;padding-bottom:clamp(60px,8vw,110px)}.tool-hero-grid{grid-template-columns:1.35fr .65fr;align-items:end;gap:clamp(40px,8vw,120px);display:grid}.tool-hero h1{max-width:780px;color:var(--tone);margin-top:18px;font-size:clamp(3.2rem,7vw,7.6rem);line-height:.86}.tool-hero-grid>div:last-child>p{color:var(--muted);font-size:var(--text-lg)}.tool-badges{flex-wrap:wrap;gap:8px;margin-top:22px;display:flex}.tool-badges span{border:1px solid var(--line);font-family:var(--font-mono);text-transform:uppercase;padding:5px 9px;font-size:.66rem}.calculator-wrap{z-index:2;margin-top:-32px;position:relative}.calculator-shell{background:var(--surface);border:1px solid var(--line-strong);box-shadow:var(--shadow)}.calculator-toolbar{border-bottom:1px solid var(--line-strong);justify-content:space-between;align-items:center;min-height:68px;padding:0 24px;display:flex}.calculator-toolbar>div:first-child{align-items:center;gap:10px;font-weight:800;display:flex}.unit-toggle{border:1px solid var(--line);padding:3px;display:flex}.unit-toggle button{min-height:34px;color:var(--muted);font-size:var(--text-xs);cursor:pointer;background:0 0;border:0;padding:0 12px;font-weight:750}.unit-toggle button.active{background:var(--ink);color:var(--bg)}.calculator-grid{grid-template-columns:minmax(310px,.78fr) minmax(0,1.22fr);display:grid}.calculator-inputs{border-right:1px solid var(--line-strong);padding:clamp(26px,4vw,48px)}.field-grid{grid-template-columns:1fr 1fr;gap:23px 18px;display:grid}.number-field{flex-direction:column;gap:7px;min-width:0;display:flex}.number-field>span:first-child{font-size:var(--text-sm);font-weight:750;line-height:1.3}.number-field small{color:var(--muted);font-size:.7rem;line-height:1.35}.input-wrap{border-bottom:2px solid var(--line-strong);grid-template-columns:1fr auto;align-items:center;display:grid}.input-wrap:focus-within{border-bottom-color:var(--accent)}.input-wrap input{width:100%;min-width:0;height:48px;color:var(--ink);font-family:var(--font-mono);background:0 0;border:0;outline:none;padding:0;font-size:1.28rem;font-weight:700}.input-wrap i{color:var(--muted);font-family:var(--font-mono);font-size:var(--text-xs);font-style:normal}.reset-button{color:var(--muted);font-size:var(--text-xs);cursor:pointer;background:0 0;border:0;border-bottom:1px solid;margin-top:32px;padding:7px 0}.reset-button:hover{color:var(--accent)}.calculator-result{background:color-mix(in srgb, var(--surface-2) 58%, var(--surface));min-width:0;padding:clamp(28px,5vw,60px)}.result-label{color:var(--success);font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.04em;text-transform:uppercase;justify-content:space-between;align-items:center;font-weight:800;display:flex}.result-label span,.result-label button{align-items:center;gap:7px;display:inline-flex}.result-label button{border:1px solid var(--line);color:var(--ink);font-size:var(--text-xs);cursor:pointer;background:0 0;padding:7px 10px}.result-label svg{width:17px}.result-kicker{color:var(--muted);font-family:var(--font-mono);font-size:var(--text-xs);text-transform:uppercase;margin-top:36px}.calculator-result h2{max-width:720px;margin-top:5px;font-size:clamp(2.6rem,5.4vw,5.7rem);line-height:.9}.result-metrics{border-top:1px solid var(--line-strong);border-left:1px solid var(--line-strong);margin-top:30px;display:grid}.result-metrics.three{grid-template-columns:repeat(3,1fr)}.result-metric{border-right:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);flex-direction:column;min-width:0;padding:17px;display:flex}.result-metric>span{color:var(--muted);font-family:var(--font-mono);text-transform:uppercase;font-size:.67rem}.result-metric strong{font-family:var(--font-mono);overflow-wrap:anywhere;margin-top:8px;font-size:clamp(.9rem,1.5vw,1.2rem);line-height:1.3}.result-metric small{color:var(--muted);margin-top:3px;font-size:.67rem}.plan-diagram{border:2px solid var(--ink);height:180px;margin-top:28px;display:flex}.plan-diagram.horizontal{flex-direction:column}.plan-diagram span{background:color-mix(in srgb, var(--accent) 46%, var(--surface));flex:1;place-items:center;display:grid;position:relative}.plan-diagram span+span{border-left:1px dashed var(--ink)}.plan-diagram.horizontal span+span{border-left:0;border-top:1px dashed var(--ink)}.plan-diagram i{background:var(--surface);width:24px;height:24px;font-family:var(--font-mono);border-radius:50%;place-items:center;font-size:.65rem;font-style:normal;display:grid}.comparison-table{margin-top:18px}.comparison-table div{border-bottom:1px solid var(--line);font-size:var(--text-sm);justify-content:space-between;gap:20px;padding:10px 2px;display:flex}.comparison-table span{color:var(--muted)}.comparison-table strong{font-family:var(--font-mono);font-size:var(--text-xs)}.binding-visual{flex-wrap:wrap;align-content:center;gap:6px;min-height:140px;margin-top:20px;display:flex}.binding-visual span{background:var(--ochre);border:1px solid var(--ink);width:calc(25% - 5px);height:15px;transform:skew(-18deg)}.skein-visual{flex-wrap:wrap;align-content:center;gap:9px;min-height:140px;margin-top:20px;display:flex}.skein-visual span{border:7px double var(--moss);border-radius:50%;width:36px;height:52px;transform:rotate(8deg)}.stitch-visual{flex-wrap:wrap;align-content:center;gap:6px;min-height:130px;margin-top:20px;display:flex}.stitch-visual span{border:2px solid var(--plum);border-radius:50% 50% 45% 45%;width:26px;height:42px;transform:rotate(30deg)}.gather-visual{align-items:center;min-height:140px;margin-top:20px;display:flex;overflow:hidden}.gather-visual span{background:linear-gradient(90deg, color-mix(in srgb, var(--accent) 30%, var(--surface)), var(--accent), color-mix(in srgb, var(--accent) 25%, var(--surface)));clip-path:polygon(0 12%,50% 0,100% 12%,90% 100%,10% 100%);flex:1;min-width:60px;height:92px}.result-warning{color:var(--muted);font-size:var(--text-xs);margin-top:20px;font-style:italic}.tool-explainer{grid-template-columns:1fr 370px;gap:clamp(60px,10vw,150px);padding-block:clamp(70px,10vw,140px);display:grid}.explainer-main>h2{margin-top:14px;font-size:clamp(2.5rem,4.6vw,5rem);line-height:.95}.explainer-main>p:not(.kicker){max-width:700px;color:var(--muted);font-size:var(--text-lg);margin-top:22px}.assumption-list{border-top:1px solid var(--line-strong);margin-top:38px;padding:0;list-style:none}.assumption-list li{border-bottom:1px solid var(--line);grid-template-columns:44px 1fr;gap:20px;padding:18px 0;display:grid}.assumption-list span{color:var(--accent);font-family:var(--font-mono)}.formula-note{color:#241b23;box-shadow:var(--shadow);background:#f0d689;align-self:start;margin-top:40px;padding:40px;position:relative;transform:rotate(-1deg)}.formula-note .kicker{color:#7c3f22}.formula-note h3{margin-top:16px;font-size:2.2rem;line-height:1}.formula-note>p:not(.kicker){margin-top:18px}.formula-note code{font-family:var(--font-mono);overflow-wrap:anywhere;border-top:1px solid #241b2359;margin-top:20px;padding-top:18px;font-size:.74rem;line-height:1.6;display:block}.formula-note a{border-bottom:1px solid;align-items:center;gap:8px;margin-top:25px;font-weight:800;display:inline-flex}.note-pin{background:#bd4d32;border-radius:50%;width:17px;height:17px;position:absolute;top:10px;left:50%;box-shadow:1px 3px 4px #00000040}.related-reading{border-top:1px solid var(--line-strong)}.related-reading .guide-card{grid-template-columns:1fr 1fr;align-items:center;gap:36px;max-width:900px;display:grid}.tool-final-cta,.article-tool-cta{background:var(--surface-2);border:1px solid var(--line-strong);grid-template-columns:auto 1fr auto;align-items:center;gap:30px;min-height:250px;padding:clamp(38px,6vw,80px);display:grid}.tool-final-cta>svg{width:52px;height:52px;color:var(--success)}.tool-final-cta h2,.article-tool-cta h2{margin-top:8px;font-size:clamp(2rem,4vw,4rem);line-height:1}.article-header{padding-top:38px;padding-bottom:62px}.article-title-grid{grid-template-columns:1.45fr .55fr;align-items:end;gap:clamp(50px,9vw,130px);display:grid}.article-title-grid h1{max-width:880px;color:var(--tone);margin-top:18px;font-size:clamp(3.2rem,6.7vw,7rem);line-height:.88}.article-deck>p{color:var(--muted);font-family:var(--font-display);font-size:clamp(1.25rem,2vw,1.7rem);font-style:italic;line-height:1.4}.article-deck>div{color:var(--muted);font-family:var(--font-mono);text-transform:uppercase;flex-direction:column;margin-top:25px;font-size:.66rem;display:flex}.article-hero{aspect-ratio:16/7;background:var(--surface-2);position:relative;overflow:hidden}.article-hero img{object-fit:cover}.article-image-label{color:#fffaf2;font-family:var(--font-mono);text-transform:uppercase;background:#241b23d1;padding:6px 9px;font-size:.64rem;position:absolute;bottom:17px;left:17px}.article-layout{grid-template-columns:220px minmax(0,760px);justify-content:center;gap:clamp(60px,10vw,140px);padding-block:clamp(70px,10vw,135px);display:grid}.article-toc{align-self:start;position:sticky;top:108px}.article-toc ol{border-top:1px solid var(--line-strong);margin-top:18px;padding:0;list-style:none}.article-toc li{border-bottom:1px solid var(--line)}.article-toc li a{color:var(--muted);font-size:var(--text-xs);padding:10px 0;line-height:1.4;display:block}.article-toc li a:hover{color:var(--accent)}.article-toc>a{font-size:var(--text-sm);align-items:center;gap:7px;margin-top:24px;font-weight:800;display:inline-flex}.article-body section{margin-bottom:80px;scroll-margin-top:110px}.section-number{color:var(--tone);font-family:var(--font-mono);font-size:var(--text-sm)}.article-body h2{margin:9px 0 25px;font-size:clamp(2.2rem,4vw,4.3rem);line-height:.97}.article-body section>p{font-family:var(--font-display);margin-top:22px;font-size:clamp(1.12rem,1.55vw,1.3rem);line-height:1.72}.article-body section>p:first-of-type:first-letter{float:left;color:var(--tone);font-family:var(--font-display);margin:.12em .12em 0 0;font-size:4.5em;line-height:.72}.article-body section>ul{border-block:1px solid 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0;font-size:clamp(1.6rem,3vw,2.7rem);font-style:italic;line-height:1.2}.static-index{color:var(--accent);font-family:var(--font-mono);font-size:3rem;position:absolute;top:43px;left:0}.static-body .button{margin-top:28px}.contact-form{grid-template-columns:1fr 1fr;gap:25px;padding:0 0 30px 190px;display:grid}.contact-form label{flex-direction:column;gap:7px;display:flex}.contact-form label>span{font-size:var(--text-sm);font-weight:750}.contact-form .full{grid-column:1/-1}.contact-form input,.contact-form select,.contact-form textarea{border:1px solid var(--line-strong);background:var(--surface);width:100%;color:var(--ink);border-radius:0;padding:12px}.contact-form button{justify-self:start}.contact-fallback{justify-items:start;gap:22px;max-width:760px;margin-left:190px;padding-bottom:30px;display:grid}.contact-fallback p{color:var(--muted);line-height:1.7}.not-found{background:var(--surface-2);border:1px solid var(--line-strong);grid-template-columns:1fr 1fr;align-items:center;min-height:620px;padding:70px;display:grid;overflow:hidden}.not-found-number{color:color-mix(in srgb, var(--accent) 60%, transparent);font-family:var(--font-display);font-size:clamp(10rem,25vw,24rem);line-height:.6;transform:rotate(-8deg)}.not-found h1,.error-state h1{margin-top:16px;font-size:clamp(2.8rem,5vw,5.5rem);line-height:.9}.not-found p:not(.kicker),.error-state p:not(.kicker){max-width:550px;color:var(--muted);font-size:var(--text-lg);margin-top:22px}.not-found .button,.error-state .button{margin-top:28px}.error-state{flex-direction:column;justify-content:center;align-items:flex-start;min-height:600px;display:flex}}@layer utilities{.sr-only{clip:rect(0, 0, 0, 0)!important;white-space:nowrap!important;border:0!important;width:1px!important;height:1px!important;margin:-1px!important;padding:0!important;position:absolute!important;overflow:hidden!important}@media (max-width:980px){.desktop-nav,.header-cta{display:none}.header-inner{grid-template-columns:1fr auto}.menu-button{display:grid}.mobile-nav{background:var(--bg);transition:grid-template-rows var(--dur-3) var(--ease-out), border-color var(--dur-2);border-bottom:1px solid #0000;grid-template-rows:0fr;display:grid}.mobile-nav>div{min-height:0;overflow:hidden}.mobile-nav.open{border-color:var(--line);grid-template-rows:1fr}.mobile-nav .shell{transition:padding var(--dur-3) var(--ease-out);flex-direction:column;padding-block:0;display:flex}.mobile-nav.open .shell{padding-block:12px 26px}.mobile-nav a:not(.button){border-bottom:1px solid var(--line);font-family:var(--font-display);align-items:baseline;gap:18px;padding:13px 0;font-size:1.55rem;display:flex}.mobile-nav a span{color:var(--accent);font-family:var(--font-mono);font-size:var(--text-xs)}.mobile-nav .button{margin-top:16px}.hero-copy{width:70%;padding-left:54px}.confidence-strip .shell{grid-template-columns:repeat(3,1fr)}.confidence-strip p{display:none}.method-preview{grid-template-columns:1fr}.formula-board{margin:0 8vw 8vw;transform:none}.category-rail{grid-template-columns:1fr}.newsletter{grid-template-columns:auto 1fr}.newsletter form{grid-column:1/-1}.footer-grid{grid-template-columns:2fr 1fr 1fr}.footer-lead{grid-column:1/-1}.archive-hero{grid-template-columns:1fr;gap:28px}.archive-hero>p{max-width:600px}.archive-body{grid-template-columns:1fr}.filter-nav{border-bottom:1px solid var(--line-strong);flex-direction:row;position:static;overflow-x:auto}.filter-nav button{border-bottom:0;flex:none;width:auto;min-width:120px}.tool-hero-grid,.article-title-grid{grid-template-columns:1fr;gap:34px}.calculator-grid{grid-template-columns:1fr}.calculator-inputs{border-right:0;border-bottom:1px solid var(--line-strong)}.tool-explainer{grid-template-columns:1fr}.formula-note{max-width:520px;margin:0}.article-layout{grid-template-columns:1fr}.article-toc{position:static}.article-toc ol{grid-template-columns:1fr 1fr;display:grid}.article-toc li:nth-child(odd){border-right:1px solid var(--line);padding-right:16px}.article-toc li:nth-child(2n){padding-left:16px}}@media (max-width:720px){.shell{width:min(100% - 28px,1220px)}.shell-wide{width:calc(100% - 16px)}.section{padding-block:70px}.split-heading{display:block}.split-heading .text-link{margin-top:24px}.header-inner{min-height:64px}.hero{align-items:flex-end;min-height:710px}.hero-image{object-position:64% center}.hero-wash{background:linear-gradient(#f7f0e31f 22%,#f7f0e3eb 58%,#f7f0e3fa 100%)}.hero-copy{width:100%;padding:50px 24px 105px}.hero h1{max-width:520px;font-size:clamp(3.3rem,15vw,5.4rem)}.hero-deck{font-size:1rem}.hero-actions{flex-direction:column;align-items:stretch}.hero-proof{bottom:32px;left:14px;right:auto}.hero-proof span{padding:7px 8px;font-size:.55rem}.confidence-strip .shell{grid-template-columns:repeat(3,1fr);min-height:100px}.confidence-strip .shell>*{flex-direction:column;align-items:flex-start;gap:0;min-height:auto;padding:0 8px}.confidence-strip strong{font-size:1.8rem}.confidence-strip span{font-size:.55rem;line-height:1.3}.tool-grid{grid-template-columns:1fr}.tool-card{min-height:310px}.tool-card h3{margin-top:38px;font-size:2.8rem}.method-copy{padding:50px 24px}.formula-board{margin:0 16px 16px}.issue-heading{grid-template-columns:1fr;gap:20px}.featured-guides{grid-template-columns:1fr;gap:60px}.guide-link-list a{grid-template-columns:35px 1fr auto;gap:10px;padding-block:17px}.guide-link-list i{grid-column:2}.guide-link-list 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