/* Battery Power Lab — technical workbench; system fonts and original assets only. */
@layer reset,base,components,responsive;
@layer reset{*,*::before,*::after{box-sizing:border-box}body,h1,h2,h3,p,ul,ol,dl,dd,fieldset{margin:0}button,input,select{font:inherit}button{cursor:pointer}a{color:inherit}svg{vertical-align:middle}input,select{min-width:0}fieldset{padding:0;border:0;min-width:0}template,[hidden]{display:none!important}}
@layer base{
:root{--paper:#f4f6f8;--white:#fff;--text:#17212b;--ink:#142b45;--blue:#155eef;--blue-dark:#1047b6;--muted:#52606d;--line:#cbd5e1;--wash:#eef3fb;--amber:#92400e;--amber-bg:#fff4d6;--success:#17603a;--success-bg:#e9f5ec;--radius:8px}
html{scroll-behavior:smooth;scroll-padding-top:24px}body{font:16px/1.65 system-ui,'Segoe UI',Arial,sans-serif;background:var(--paper);color:var(--text);-webkit-font-smoothing:antialiased}h1,h2,h3{color:var(--ink);font-weight:700;line-height:1.18;letter-spacing:-.035em}h1{font-size:clamp(2rem,4vw,3rem)}h2{font-size:clamp(1.5rem,2.5vw,2rem)}h3{font-size:1.125rem}p{margin-bottom:1em}p:last-child{margin-bottom:0}a{text-underline-offset:4px}a:hover{color:var(--blue-dark)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--blue);outline-offset:4px}::selection{background:#d5e3ff;color:var(--ink)}.container{width:min(1200px,calc(100% - 64px));margin-inline:auto}.section{padding-block:56px}.icon{flex-shrink:0}.eyebrow{font-size:12px;letter-spacing:.09em;font-weight:700;color:var(--muted);margin-bottom:16px;line-height:1.6}.muted{color:var(--muted)}.lead{font-size:1.2rem;color:var(--ink);max-width:70ch}.sr-only{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{position:absolute;z-index:100;top:8px;left:8px;transform:translateY(-150%);background:white;border:2px solid var(--blue);padding:12px 20px}.skip-link:focus{transform:none}
}
@layer components{
.site-header{background:white;border-bottom:1px solid var(--line)}.header-inner{height:80px;display:flex;justify-content:space-between;align-items:center;gap:24px}.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-size:18px;font-weight:750;letter-spacing:-.035em;white-space:nowrap;color:var(--ink)}.logo-mark{display:grid;place-items:center;width:32px;height:36px;border-radius:4px;background:var(--ink);color:white;border-bottom:4px solid var(--blue)}.logo-mark .icon{width:22px;height:22px}.site-header nav{display:flex;gap:20px;align-items:center;font-size:14px;font-weight:600}.site-header nav a{display:flex;align-items:center;min-height:44px;text-decoration:none}.site-header nav a:hover,.site-header nav [aria-current]{color:var(--blue);text-decoration:underline}.nav-method{border-left:1px solid var(--line);padding-left:20px;gap:8px}.nav-method .icon{width:16px}.menu-toggle{display:none;min-height:44px;background:white;border:1px solid #8e9fb2;border-radius:4px;padding:8px 12px;align-items:center;gap:8px;color:var(--ink)}
.hero{padding:40px 0 32px;border-bottom:1px solid var(--line)}.workbench-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:20px}.workbench-heading .eyebrow{margin:0}.utility-badge{font-size:12px;font-weight:600;border:1px solid var(--line);padding:6px 12px;border-radius:4px;color:var(--muted);background:white}.hero h1{font-size:clamp(2.3rem,4.2vw,3.5rem);max-width:900px;line-height:1.08;letter-spacing:-.045em}.hero-description{max-width:75ch;color:var(--muted);margin-top:20px;font-size:17px}.priority-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:28px 0}.priority-tools>a{background:white;border:1px solid var(--line);border-top:3px solid var(--ink);border-radius:8px;padding:20px;text-decoration:none;display:flex;flex-direction:column;gap:8px}.priority-tools>a:hover{border-color:var(--blue)}.task-code{font-family:ui-monospace,Consolas,monospace;color:var(--blue-dark);font-size:12px;font-weight:600}.priority-tools strong{font-size:17px;line-height:1.4;letter-spacing:-.02em}.priority-tools>a>span:last-child{font-size:14px;color:var(--muted);display:flex;gap:12px;justify-content:space-between;align-items:center}.priority-tools .icon{width:18px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:16px;min-height:48px;padding:11px 20px;font-size:16px;line-height:1.5;font-weight:650;text-decoration:none;border:1px solid transparent;border-radius:4px}.button .icon{width:19px;height:19px}.button-primary{background:var(--blue);color:white}.button-primary:hover{background:var(--blue-dark);color:white}.button-outline{background:white;border-color:#8e9fb2;color:var(--ink)}.button-outline:hover{background:var(--wash)}.button-small{min-height:44px;padding:8px 16px;font-size:14px}.text-link{display:inline-flex;align-items:center;gap:12px;font-size:14px;font-weight:650;text-decoration:none;min-height:44px}.text-link:hover{text-decoration:underline}.text-link .icon{width:18px}
.quick-form{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:white}.quick-top{padding:12px 24px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:12px;letter-spacing:.06em;font-weight:700;background:#f9fafc}.quick-top a{letter-spacing:0;font-size:14px;min-height:36px;display:flex;align-items:center}.quick-form .calculator-grid{grid-template-columns:1fr 1fr;gap:0;align-items:stretch}.quick-form .input-panel{border:0;border-radius:0;padding:24px}.quick-form .input-panel h2{font-size:20px;margin-bottom:20px}.quick-form .result-panel{border:0;border-left:1px solid var(--line);border-radius:0;position:static;min-height:0;padding:24px;background:var(--wash)}.quick-form .result-value{font-size:40px;margin:8px 0 16px}.quick-form .result-metrics{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}.quick-form .result-metrics>div{display:block;padding-block:8px}.quick-form .result-metrics dd{text-align:left;font-size:16px;margin-top:4px}.quick-form .result-note{font-size:14px;margin-top:12px}.quick-assumption{font-size:14px;line-height:1.7;color:var(--muted);margin-top:16px}.quick-form .form-actions{margin-top:20px}
.category-strip{background:white;border-bottom:1px solid var(--line)}.category-grid{display:grid;grid-template-columns:repeat(4,1fr)}.category-grid>a{display:flex;align-items:center;gap:12px;padding:20px 16px;border-right:1px solid var(--line);text-decoration:none}.category-grid>a:first-child{padding-left:0}.category-grid>a:last-child{border-right:0}.category-grid>a>.icon{width:16px;margin-left:auto;color:var(--muted)}.category-icon{color:var(--blue-dark)}.category-grid strong{font-size:14px;display:block;line-height:1.4}.category-grid small{font-size:14px;display:block;color:var(--muted);margin-top:4px}.category-grid>a:hover{color:var(--blue)}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:24px}.section-heading .eyebrow{margin-bottom:8px}.section-heading p:not(.eyebrow){margin-top:12px;color:var(--muted)}.section-heading>.text-link{flex-shrink:0}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tool-card{background:white;border:1px solid var(--line);border-radius:8px;padding:24px;text-decoration:none;display:flex;flex-direction:column;min-height:230px}.tool-card:hover{border-color:var(--blue)}.card-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px}.tool-icon{width:40px;height:40px;display:grid;place-items:center;border:1px solid #b9cbe3;border-radius:4px;color:var(--blue-dark);background:white;flex-shrink:0}.tool-icon .icon{width:22px;height:22px}.category-label{font-size:12px;color:var(--muted)}.tool-card h3{font-size:19px;line-height:1.3}.tool-card p{font-size:14px;color:var(--muted);margin:12px 0 20px}.card-action{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:14px;font-weight:650;color:var(--blue-dark);margin-top:auto;min-height:36px}.card-action .icon{width:18px}
.portable-feature{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;background:white;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:8px;padding:32px}.portable-feature h2{margin-bottom:16px}.portable-feature p{max-width:70ch;color:var(--muted)}.feature-footnote{font-size:14px;margin-top:16px}.power-steps{padding:0;list-style:none}.power-steps li{display:flex;align-items:start;gap:16px;padding:16px 0;border-top:1px solid var(--line)}.power-steps li:first-child{border-top:0;padding-top:0}.power-steps strong{font-size:16px;color:var(--ink)}.power-steps p{font-size:14px;margin-top:4px}.unit-code{font-family:ui-monospace,Consolas,monospace;display:grid;place-items:center;min-width:48px;height:48px;border:1px solid var(--line);border-radius:4px;background:var(--wash);color:var(--blue-dark);font-size:20px;font-weight:700}.how-section{display:grid;grid-template-columns:1fr 2fr;gap:32px}.how-section h2{margin-bottom:16px}.how-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:0;list-style:none}.how-steps>li>span{font-family:ui-monospace,Consolas,monospace;display:block;font-size:14px;color:var(--blue-dark);border-bottom:2px solid var(--line);padding-bottom:12px;margin-bottom:16px}.how-steps h3{font-size:16px;margin-bottom:8px}.how-steps p{font-size:14px;color:var(--muted)}.transparency-band{background:var(--wash);border-block:1px solid var(--line);padding:24px 0}.transparency-band>.container{display:flex;align-items:center;gap:20px}.transparency-band>.container>.icon{width:28px;height:28px;color:var(--blue-dark)}.transparency-band h2{font-size:18px}.transparency-band p{font-size:14px;color:var(--muted);margin-top:8px}.transparency-band a{margin-left:auto;flex-shrink:0}
.site-footer{background:white;padding-top:40px}.footer-top{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:40px;padding-bottom:32px}.footer-brand p{font-size:14px;color:var(--muted);margin-top:16px}.footer-note{font-size:14px;color:var(--muted)}.footer-heading{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:12px}.footer-top>div:not(.footer-brand)>a{display:block;font-size:14px;text-decoration:none;min-height:36px;overflow-wrap:anywhere}.footer-top a:hover{text-decoration:underline}.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:24px;border-top:1px solid var(--line);padding-block:20px;font-size:14px;color:var(--muted)}.footer-bottom>div{display:flex;gap:20px;flex-wrap:wrap}.footer-bottom a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none}
.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;color:var(--muted);font-size:14px;padding:16px 0}.breadcrumbs a{display:inline-flex;align-items:center;min-height:36px;text-decoration:none}.breadcrumbs a:hover{text-decoration:underline}.directory-page,.calculator-page{padding-bottom:56px}.page-intro{max-width:75ch;padding:16px 0 32px}.page-intro h1{margin-bottom:20px}.page-intro>p:last-child{color:var(--muted)}.directory-controls{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:16px 0;border-block:1px solid var(--line)}.filter-tabs{display:flex;flex-wrap:wrap;gap:8px}.filter-tab{background:white;border:1px solid var(--line);border-radius:4px;padding:9px 12px;min-height:44px;font-size:14px;color:var(--muted)}.filter-tab.active{background:var(--ink);border-color:var(--ink);color:white}.filter-tab:hover{border-color:var(--blue);color:var(--blue-dark)}.filter-tab.active:hover{background:var(--blue-dark);color:white}.search-field{display:flex;align-items:center;gap:8px;background:white;border:1px solid #8e9fb2;border-radius:4px;padding:0 12px;max-width:260px}.search-field .icon{width:18px;color:var(--muted)}.search-field input{border:0;min-height:44px;padding:9px 0;width:100%;font-size:16px;background:transparent;color:var(--text)}.directory-count{margin-block:20px;font-size:14px;color:var(--muted)}.no-results{padding:32px;text-align:center}.directory-note{display:flex;align-items:start;gap:16px;margin-top:32px;background:var(--wash);border:1px solid var(--line);border-radius:8px;padding:24px;font-size:16px}.directory-note>.icon{color:var(--blue-dark)}.directory-note p{font-size:14px;color:var(--muted);margin-top:8px}
.calculator-intro{display:flex;align-items:start;gap:16px;padding:16px 0 32px;max-width:1000px}.calculator-intro>.tool-icon{margin-top:4px}.calculator-intro .eyebrow{margin-bottom:8px}.calculator-intro h1{font-size:clamp(1.875rem,3.3vw,2.75rem);margin-bottom:16px}.calculator-intro p:last-child{color:var(--muted);max-width:75ch}.calculator-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:24px;align-items:start}.input-panel{background:white;border:1px solid var(--line);border-radius:8px;padding:24px;min-width:0}.panel-heading{display:flex;align-items:center;gap:12px;margin-bottom:24px}.panel-heading h2{font-size:20px}.panel-heading .muted{font-size:14px;margin-left:auto}.step-dot{display:grid;place-items:center;width:28px;height:28px;background:var(--wash);border:1px solid var(--line);border-radius:4px;color:var(--blue-dark);font-size:14px;font-weight:700}.fields-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.input-group+.input-group{margin-top:24px;padding-top:24px;border-top:1px solid var(--line)}.input-group>legend{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--muted)}.field{min-width:0}.field label,.load-field label{font-size:14px;font-weight:650;line-height:1.5;color:var(--ink);display:block;margin-bottom:8px}.input-wrap{position:relative;display:flex;align-items:center}.input-wrap input,.input-wrap select{width:100%;border:1px solid #8e9fb2;border-radius:4px;background:white;color:var(--text);min-height:48px;padding:11px 12px;font-size:16px;line-height:1.5}.input-wrap input{padding-right:60px;font-variant-numeric:tabular-nums}.input-wrap select{padding-right:24px}.input-unit{position:absolute;right:12px;pointer-events:none;font-size:14px;color:var(--muted);font-family:ui-monospace,Consolas,monospace}.field-help{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.65}.form-actions{display:flex;align-items:center;gap:16px;margin-top:24px}.reset-button{min-height:48px;border:1px solid #8e9fb2;border-radius:4px;background:white;padding:10px 16px;color:var(--ink);font-size:16px}.reset-button:hover{background:var(--wash)}.form-error{margin-top:20px;background:var(--amber-bg);color:var(--amber);border-left:4px solid var(--amber);border-radius:4px;padding:16px;font-size:16px}.notice{background:var(--amber-bg);color:var(--amber);padding:16px;border-left:3px solid var(--amber);font-size:14px;margin-top:16px}.needs-verification{background:var(--amber-bg);color:var(--amber)!important;padding:12px;border-radius:4px}.result-panel{background:var(--wash);border:1px solid #b8c9e2;border-top:4px solid var(--blue);border-radius:8px;padding:24px;min-width:0;position:sticky;top:24px;overflow-wrap:anywhere}.result-eyebrow{font-size:12px;color:var(--muted);margin-bottom:16px;font-weight:650}.result-eyebrow .icon{width:14px;height:14px}.result-label{font-size:16px;font-weight:600;line-height:1.5;letter-spacing:0}.result-value{font-size:clamp(2.25rem,4vw,3.5rem);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.04em;line-height:1.2;color:var(--blue-dark);margin:12px 0 24px;overflow-wrap:anywhere}.result-value span{font-size:20px;font-weight:500;letter-spacing:0;color:var(--ink);display:inline-block}.result-metrics{font-size:14px}.result-metrics>div{display:flex;align-items:baseline;justify-content:space-between;gap:16px;border-top:1px solid #c5d3e6;padding:12px 0}.result-metrics dt{color:var(--muted);min-width:0}.result-metrics dd{font-size:16px;font-weight:600;font-variant-numeric:tabular-nums;text-align:right;min-width:0}.result-note{font-size:14px;color:var(--muted);line-height:1.75;margin-top:20px}.stale-result{min-height:220px;display:flex;flex-direction:column;justify-content:center}.stale-result h2{font-size:20px;margin-bottom:12px}.stale-result p{font-size:16px;color:var(--muted)}
.appliance-set{margin-bottom:24px}.appliance-set legend{font-weight:700;font-size:16px}.appliance-set>.field-help{margin-bottom:16px}.load-row{display:grid;grid-template-columns:1.4fr repeat(4,1fr) 32px;gap:8px;padding:16px 0;border-top:1px solid var(--line);position:relative}.load-number{display:none}.load-field{min-width:0}.load-field label{font-size:14px;min-height:3em}.load-field .input-wrap input{font-size:16px;padding:8px;min-height:44px}.remove-load{padding:0;min-height:44px;min-width:32px;align-self:end;font-size:24px;background:white;color:var(--amber);border:1px solid var(--line);border-radius:4px}.remove-load:hover{background:var(--amber-bg)}.appliance-set>.button{margin-top:8px}.settings-heading{font-size:16px;letter-spacing:0;padding-top:20px;border-top:1px solid var(--line);margin-bottom:20px}
.explanation-grid{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);gap:48px;margin-top:48px}.explanation section{margin-bottom:32px;max-width:75ch}.explanation h2{font-size:24px;line-height:1.35;margin-bottom:16px}.explanation p,.explanation li{font-size:16px;line-height:1.85;color:var(--muted)}.formula{font-family:ui-monospace,Consolas,monospace;background:white;border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:4px;padding:20px;color:var(--ink)!important;font-size:14px!important;overflow-wrap:anywhere}.limitations{border-left:3px solid var(--amber);padding-left:20px}.source-list{padding-left:20px;margin-bottom:16px}.source-list a{color:var(--blue-dark)}.next-steps{align-self:start;background:white;border:1px solid var(--line);border-radius:8px;padding:24px}.next-steps h2{font-size:22px;margin-bottom:20px}.next-steps>a{display:flex;align-items:center;gap:12px;padding:20px 0;border-top:1px solid var(--line);text-decoration:none}.next-steps>a>.icon{width:20px;color:var(--blue-dark)}.next-steps>a>.icon:last-child{width:16px;margin-left:auto}.next-steps strong{font-size:16px;line-height:1.5;display:block}.next-steps small{font-size:14px;display:block;color:var(--muted);margin-top:4px}.next-steps>p:last-child{font-size:14px;color:var(--muted);margin-top:16px}
.catalog-section{margin-top:40px;padding-top:32px;border-top:1px solid var(--line)}.catalog-section>p{max-width:85ch;font-size:16px;color:var(--muted)}.commercial-note{font-size:14px!important}.catalog-filter{display:flex;align-items:center;gap:12px;font-size:14px}.catalog-filter select{min-height:48px;max-width:100%;border:1px solid #8e9fb2;border-radius:4px;background:white;color:var(--text);padding:10px;font-size:16px}.comparison-summary{background:white;border:1px solid var(--line);border-radius:8px;padding:20px;margin-top:24px}.comparison-summary h3{font-size:16px;margin-bottom:16px}.comparison-summary dl{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.comparison-summary dt{font-size:14px;color:var(--muted);margin-bottom:8px}.comparison-summary dd{font-size:18px;font-weight:650;font-variant-numeric:tabular-nums;line-height:1.5}.comparison-summary .needs-verification dt{color:var(--amber)}.catalog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}.product-card{background:white;border:1px solid var(--line);border-radius:8px;padding:24px;display:flex;flex-direction:column;min-width:0}.product-status{background:var(--amber-bg);color:var(--amber);border:1px solid #edce8c;border-radius:4px;padding:8px 10px;font-size:14px;font-weight:600;line-height:1.5;min-height:60px;display:flex;align-items:center;margin-bottom:20px}.product-card.excluded .product-status{border-left:4px solid var(--amber)}.product-brand{font-size:14px;color:var(--muted);margin-bottom:4px}.product-card h3{font-size:22px;margin-bottom:20px;min-height:2.4em}.product-card dl{font-size:14px}.product-card dl>div{display:flex;justify-content:space-between;align-items:baseline;gap:16px;min-height:46px;padding:10px 0;border-top:1px solid var(--line)}.product-card dt{color:var(--muted)}.product-card dd{font-variant-numeric:tabular-nums;font-weight:600;text-align:right}.product-card ul{padding-left:20px;margin:20px 0;font-size:14px;color:var(--muted);line-height:1.8}.product-card .product-note{font-size:14px;color:var(--muted);line-height:1.8}.evidence-link{font-size:14px;font-weight:600;color:var(--blue-dark);display:flex;align-items:center;min-height:44px;margin-top:auto}.product-purchase{display:flex;align-items:center;min-height:48px;color:var(--blue-dark);font-weight:650;font-size:16px;margin-top:12px}.verification-date{font-size:14px;color:var(--muted);margin-top:12px}.catalog-empty{grid-column:1/-1;background:var(--amber-bg);color:var(--amber);padding:24px;border-radius:4px;font-size:16px}
.editorial-page{padding-bottom:64px}.article-layout{display:grid;grid-template-columns:minmax(0,75ch) minmax(0,1fr);gap:64px;margin-top:24px}.article-layout h1{margin-bottom:24px}.article-layout h2{font-size:24px;line-height:1.4;margin:32px 0 16px}.article-layout p{font-size:16px;line-height:1.9;color:var(--muted);overflow-wrap:anywhere}.article-layout .lead{font-size:20px;color:var(--ink)}.article-layout h2 a{font-size:22px}.article-aside{align-self:start;background:white;border:1px solid var(--line);border-radius:8px;padding:24px}.article-aside a{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid var(--line);font-size:14px;min-height:52px;text-decoration:none}.article-aside .icon{width:16px}.not-found{padding:64px 0 96px;max-width:75ch}.not-found h1{margin-bottom:24px}.not-found>p{color:var(--muted);margin-bottom:24px}
}
@layer responsive{
@media(max-width:1100px){.site-header nav{gap:12px}.nav-method{padding-left:12px}.header-inner{gap:20px}.container{width:calc(100% - 48px)}.load-row{grid-template-columns:1fr 1fr;gap:16px;padding:20px 0}.load-field:first-of-type{grid-column:1/-1;padding-right:56px}.load-field label{min-height:0}.remove-load{position:absolute;right:0;top:48px;width:44px}.explanation-grid{gap:32px}.catalog-grid{gap:16px}.product-card{padding:20px}.article-layout{gap:32px}.footer-bottom>span:last-child{display:none}}
@media(max-width:960px){.header-inner{height:72px}.menu-toggle{display:flex}.site-header{position:relative}.site-header nav{display:none;position:absolute;z-index:20;top:71px;left:0;right:0;background:white;border-bottom:1px solid var(--line);padding:16px 24px;box-shadow:0 8px 16px #142b4510}.site-header nav.open{display:flex;flex-direction:column;align-items:stretch;gap:0}.site-header nav a{font-size:16px;min-height:48px}.nav-method{border-left:0;padding-left:0}.hero{padding-top:32px}.priority-tools{gap:12px}.priority-tools>a{padding:16px}.priority-tools strong{font-size:16px}.category-grid{grid-template-columns:1fr 1fr}.category-grid>a{padding:20px!important}.category-grid>a:nth-child(2){border-right:0}.category-grid>a:nth-child(-n+2){border-bottom:1px solid var(--line)}.category-grid strong{font-size:16px}.calculator-grid{grid-template-columns:1fr}.result-panel{position:static}.result-metrics{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}.directory-controls{flex-direction:column;align-items:stretch;gap:16px}.search-field{max-width:none}.tool-grid{grid-template-columns:1fr 1fr}.catalog-grid{grid-template-columns:1fr}.product-card h3{min-height:0}.product-status{min-height:0}.product-card dl{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}.comparison-summary dl{grid-template-columns:1fr 1fr}.how-section{grid-template-columns:1fr}.portable-feature{gap:32px;padding:24px}.transparency-band>.container{flex-wrap:wrap;align-items:start}.transparency-band>.container>div{flex:1}.transparency-band a{margin-left:48px}.article-layout{grid-template-columns:1fr}.article-aside{max-width:600px}.footer-top{grid-template-columns:1.5fr 1fr 1fr;gap:24px}.footer-bottom{flex-wrap:wrap}.section-heading{align-items:start}}
@media(max-width:720px){.workbench-heading{align-items:start;flex-direction:column;gap:12px}.priority-tools{grid-template-columns:1fr}.priority-tools>a{gap:6px}.priority-tools strong{font-size:18px}.quick-form .calculator-grid{grid-template-columns:1fr}.quick-form .result-panel{border-left:0;border-top:1px solid var(--line)}.quick-top{padding:12px 20px;align-items:start;flex-direction:column;gap:4px}.section-heading{flex-direction:column;gap:16px}.portable-feature{grid-template-columns:1fr}.explanation-grid{grid-template-columns:1fr}.how-steps{gap:20px}.footer-top{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.category-grid>a{padding:16px!important;gap:10px}.category-grid strong{font-size:14px}.category-grid>a>.icon{display:none}.article-layout{margin-top:16px}}
@media(max-width:560px){.container{width:calc(100% - 32px)}.section{padding-block:40px}.header-inner{gap:8px}.logo{font-size:16px;gap:8px}.logo-mark{width:28px;height:32px}.menu-toggle{font-size:14px;padding:8px;gap:6px}.hero h1{font-size:36px;line-height:1.12}.hero h1 br{display:none}.hero-description{font-size:16px;line-height:1.8}.hero{padding-top:24px}.priority-tools{margin-block:24px}.quick-form .input-panel,.quick-form .result-panel{padding:20px}.quick-form .result-value{font-size:40px}.quick-form .result-metrics{display:block}.quick-form .result-metrics>div{display:flex;gap:16px}.quick-form .result-metrics dd{text-align:right;margin:0}.fields-grid{grid-template-columns:1fr;gap:20px}.form-actions{gap:12px;flex-wrap:wrap}.button{padding-inline:16px}.category-grid{width:100%}.category-icon .icon{width:20px;height:20px}.tool-grid{grid-template-columns:1fr}.tool-card{padding:20px;min-height:0}.tool-card h3{font-size:20px}.card-action{min-height:44px}.section-heading h2{font-size:28px}.portable-feature{padding:24px 20px;gap:24px}.portable-feature .button{width:100%;gap:10px;font-size:14px}.how-steps{grid-template-columns:1fr}.how-steps>li{display:grid;grid-template-columns:32px 1fr;gap:0 16px}.how-steps>li>span{grid-row:1/3;border:0;margin:0;padding:0}.how-steps h3{font-size:18px}.how-steps p{font-size:16px}.transparency-band h2{font-size:18px}.transparency-band>.container>.icon{width:24px}.transparency-band a{margin-left:44px}.footer-top{gap:24px 16px}.footer-bottom{flex-direction:column;align-items:start;gap:12px;padding-block:16px}.footer-bottom>div{gap:16px}.footer-top>div:not(.footer-brand)>a{min-height:44px;line-height:1.5;padding-block:8px}.page-intro{padding:16px 0 24px}.page-intro h1{font-size:32px}.filter-tabs{gap:8px}.filter-tab{font-size:14px;padding:9px 12px}.breadcrumbs{font-size:14px;gap:8px}.calculator-intro{display:block;padding:8px 0 24px}.calculator-intro>.tool-icon{margin-bottom:16px}.calculator-intro h1{font-size:30px}.input-panel{padding:20px}.panel-heading{flex-wrap:wrap;gap:10px}.panel-heading .muted{font-size:14px}.panel-heading h2{font-size:20px}.field label{font-size:16px}.input-wrap input,.input-wrap select{font-size:16px;min-height:48px}.calculator-grid{gap:16px}.result-panel{padding:20px}.result-value{font-size:40px}.result-metrics{display:block}.result-metrics>div{gap:12px}.result-metrics dt{font-size:14px;max-width:65%}.result-metrics dd{font-size:16px}.load-field label{font-size:14px}.load-field .input-wrap input{font-size:16px;min-height:48px}.remove-load{top:49px;height:48px}.settings-heading{font-size:18px}.explanation-grid{margin-top:32px;gap:16px}.explanation h2{font-size:22px}.formula{font-size:14px!important;padding:16px}.next-steps{padding:20px}.catalog-section{margin-top:32px;padding-top:24px}.catalog-filter{align-items:start;flex-direction:column;width:100%;gap:8px}.catalog-filter select{width:100%}.comparison-summary{padding:16px}.comparison-summary dl{grid-template-columns:1fr;gap:16px}.comparison-summary dd{font-size:18px}.product-card{padding:20px}.product-card dl{display:block}.product-card dl>div{gap:12px}.editorial-page{padding-bottom:40px}.article-layout h1{font-size:32px}.article-layout h2{font-size:22px}.article-layout .lead{font-size:20px}.article-aside{padding:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
@media print{.site-header,.site-footer,.breadcrumbs,.next-steps,.form-actions,.catalog-section{display:none}.container{width:100%}.calculator-grid,.explanation-grid{display:block}.result-panel{position:static;break-inside:avoid;margin-top:24px}body{background:white}.explanation section{break-inside:avoid}}
}
input[aria-invalid="true"],select[aria-invalid="true"]{border:2px solid #92400e;background:#fffdf8}