#hk-calculators{--hk-ink:#17202b;--hk-muted:#546172;--hk-line:#dce1e7;--hk-red:#b6212b;--hk-paper:#fff;--hk-bg:#f4f6f8;font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--hk-ink);background:var(--hk-paper);text-align:left;letter-spacing:normal;max-width:1600px;margin:0 auto;container-type:inline-size;container-name:hktools}
#hk-calculators *,#hk-calculators *::before,#hk-calculators *::after{box-sizing:border-box}
#hk-calculators a{color:inherit;text-decoration:none}#hk-calculators a:hover{text-decoration:underline}#hk-calculators button,#hk-calculators input,#hk-calculators select{font:inherit;letter-spacing:normal}#hk-calculators button{cursor:pointer}
#hk-calculators :focus-visible{outline:3px solid #2474aa;outline-offset:3px}#hk-calculators h1,#hk-calculators h2,#hk-calculators p,#hk-calculators dl,#hk-calculators dd,#hk-calculators figure{margin:0}#hk-calculators [hidden]{display:none!important}
#hk-calculators .hk-skip{position:absolute;left:-9999px;background:#fff;padding:12px;z-index:5}#hk-calculators .hk-skip:focus{left:12px;top:12px}
#hk-calculators .hk-header{display:flex;align-items:center;gap:36px;min-height:100px;border-top:5px solid var(--hk-red);border-bottom:1px solid var(--hk-line);padding:20px 40px}
#hk-calculators .hk-brand{font-size:30px;line-height:.95;font-weight:900;letter-spacing:-1.5px;display:block;flex-shrink:0}#hk-calculators .hk-brand span{color:var(--hk-red);margin-left:3px}#hk-calculators .hk-brand small{display:block;font-weight:500;font-size:10px;letter-spacing:3.8px;line-height:1;margin:8px 0 0 2px}#hk-calculators .hk-collection{font-size:18px;font-weight:600;border-left:1px solid var(--hk-line);padding-left:30px}#hk-calculators .hk-shop{margin-left:auto;font-size:14px;color:var(--hk-muted)}
#hk-calculators .hk-layout{display:grid;grid-template-columns:260px minmax(0,1fr)}#hk-calculators .hk-sidebar{border-right:1px solid var(--hk-line);background:#fafbfc;padding:28px 16px 30px 24px}#hk-calculators .hk-sidebar-title{font-size:12px;font-weight:700;letter-spacing:1.4px;color:var(--hk-muted);display:flex;justify-content:space-between;margin:0 8px 26px 0}#hk-calculators .hk-sidebar-title span{letter-spacing:0;font-weight:400}#hk-calculators .hk-sidebar nav{position:sticky;top:20px;max-height:calc(100vh - 40px);overflow-y:auto;padding-right:8px;scrollbar-width:thin}#hk-calculators .hk-nav-group{margin-bottom:26px}#hk-calculators .hk-nav-group h2{font-size:14px;display:flex;justify-content:space-between;align-items:center;padding:0 10px 8px 8px;font-weight:700}#hk-calculators .hk-nav-group h2 span{font-size:12px;color:var(--hk-muted);font-weight:400}#hk-calculators .hk-nav-group a{display:block;font-size:14px;padding:8px 10px;margin:2px 0;border-left:2px solid transparent;line-height:1.4;color:#455367}#hk-calculators .hk-nav-group a[aria-current]{background:#f7e9eb;color:#951924;border-left-color:var(--hk-red);font-weight:650}#hk-calculators .hk-nav-group a:hover{background:#edf0f4;text-decoration:none}
#hk-calculators .hk-main{padding:35px 40px 20px;min-width:0}#hk-calculators .hk-eyebrow{font-size:12px;font-weight:700;color:var(--hk-red);letter-spacing:1.5px;text-transform:uppercase;margin-bottom:8px}#hk-calculators .hk-heading h1{font-size:clamp(28px,3vw,42px);font-weight:700;line-height:1.15;letter-spacing:-1.1px;margin:0 0 14px}#hk-calculators .hk-heading>p:last-child{max-width:760px;color:var(--hk-muted);font-size:16px}#hk-calculators .hk-heading{margin-bottom:28px}
#hk-calculators .hk-workbench{display:grid;grid-template-columns:minmax(240px,.9fr) minmax(280px,1.2fr);border:1px solid var(--hk-line);border-radius:6px;overflow:hidden}#hk-calculators .hk-input-panel{padding:24px;background:var(--hk-bg)}#hk-calculators .hk-results-panel{padding:24px;min-width:0;border-left:1px solid var(--hk-line);background:white}#hk-calculators .hk-panel-heading{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:22px}#hk-calculators .hk-panel-heading h2{font-size:16px;font-weight:700}#hk-calculators .hk-panel-heading>span{font-size:12px;color:var(--hk-muted);text-align:right}#hk-calculators .hk-field{margin-bottom:16px}#hk-calculators .hk-field label{font-size:14px;display:block;font-weight:600;margin-bottom:6px}#hk-calculators .hk-input-wrap{position:relative;display:flex;align-items:center}#hk-calculators .hk-input-wrap>span{position:absolute;right:13px;pointer-events:none;color:var(--hk-muted);font-size:14px;max-width:85px;text-align:right}#hk-calculators input,#hk-calculators select{color:var(--hk-ink);background:white;width:100%;height:auto;min-height:46px;padding:10px 13px;border:1px solid #bac3ce;border-radius:4px;box-shadow:none}#hk-calculators input{padding-right:94px;font-size:17px;font-variant-numeric:tabular-nums}#hk-calculators input[aria-invalid=true]{border-color:var(--hk-red)}#hk-calculators .hk-hint{font-size:12px;color:var(--hk-muted);line-height:1.45;margin-top:5px}#hk-calculators .hk-hint:empty{display:none}#hk-calculators .hk-form-bottom{border-top:1px solid var(--hk-line);padding-top:16px;display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:24px}#hk-calculators .hk-form-bottom span{font-size:12px;color:var(--hk-muted)}#hk-calculators button{background:transparent;border:0;border-bottom:1px solid #8090a1;color:#344457;font-size:13px;padding:4px 0;white-space:nowrap}
#hk-calculators .hk-values{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}#hk-calculators .hk-values>div{padding:16px 0;border-bottom:1px solid var(--hk-line);min-width:0}#hk-calculators .hk-values .hk-primary{grid-column:1/-1;padding-top:0;padding-bottom:20px;margin-bottom:2px}#hk-calculators .hk-values dt{font-size:13px;color:var(--hk-muted);line-height:1.4;margin-bottom:5px}#hk-calculators .hk-values dd{font-size:24px;font-weight:600;line-height:1.25;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}#hk-calculators .hk-values dd span{font-size:14px;font-weight:400;white-space:nowrap;color:var(--hk-muted)}#hk-calculators .hk-values .hk-primary dd{font-size:clamp(38px,4vw,58px);color:var(--hk-red);letter-spacing:-1.5px}#hk-calculators .hk-values .hk-primary dd span{font-size:22px;letter-spacing:0;color:var(--hk-ink)}#hk-calculators .hk-note{font-size:13px;line-height:1.5;margin-top:16px;padding-left:12px;border-left:2px solid #98a8b9;color:#445366}#hk-calculators #hk-error{padding:14px;background:#fff0f0;border-left:3px solid var(--hk-red);font-size:14px;color:#891d27;margin-bottom:16px}#hk-calculators .hk-result-empty{font-size:14px;color:var(--hk-muted)}
#hk-calculators .hk-plot{margin-top:18px}#hk-calculators .hk-plot svg{display:block;width:100%;height:auto;overflow:visible}#hk-calculators .hk-plot text{font:12px -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;fill:#546172}#hk-calculators figcaption{font-size:12px;color:var(--hk-muted);margin-top:5px}#hk-calculators .hk-table-wrap{max-height:390px;overflow:auto;margin-top:20px}#hk-calculators table{width:100%;border-collapse:collapse;font-size:13px}#hk-calculators th,#hk-calculators td{padding:9px 7px;text-align:left;border-bottom:1px solid var(--hk-line);white-space:nowrap}#hk-calculators th{font-weight:650;background:#f4f6f8;position:sticky;top:0}#hk-calculators caption{font-size:12px;text-align:left;padding:8px 0;color:var(--hk-muted);caption-side:bottom}
#hk-calculators .hk-method{display:grid;grid-template-columns:1fr 1fr;gap:34px;padding:28px 0;border-bottom:1px solid var(--hk-line)}#hk-calculators .hk-method h2{font-size:15px;margin-bottom:12px;font-weight:700}#hk-calculators .hk-method pre{white-space:pre-wrap;overflow-wrap:anywhere;font:14px/1.8 ui-monospace,SFMono-Regular,Consolas,monospace;background:var(--hk-bg);border:0;border-left:2px solid #bdc7d2;padding:15px 18px;margin:0;color:#344457;border-radius:0}#hk-calculators .hk-method p{font-size:14px;color:var(--hk-muted);line-height:1.65}#hk-calculators .hk-reference{display:inline-block;font-size:12px;text-decoration:underline;margin-top:14px;color:#44566e}#hk-calculators .hk-related{display:flex;align-items:center;flex-wrap:wrap;gap:12px 22px;padding:24px 0;font-size:14px}#hk-calculators .hk-related>span{font-size:12px;color:var(--hk-muted)}#hk-calculators .hk-related a{font-weight:600}#hk-calculators .hk-related a span{color:var(--hk-red);margin-left:4px}#hk-calculators .hk-footer{display:flex;justify-content:space-between;gap:15px;border-top:1px solid var(--hk-line);padding-top:18px;font-size:12px;color:var(--hk-muted)}#hk-calculators .hk-mobile-nav{display:none}#hk-calculators .hk-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:1150px){#hk-calculators .hk-layout{grid-template-columns:225px minmax(0,1fr)}#hk-calculators .hk-main{padding:28px 24px 20px}#hk-calculators .hk-header{padding:20px 24px}#hk-calculators .hk-input-panel,#hk-calculators .hk-results-panel{padding:20px}#hk-calculators .hk-workbench{grid-template-columns:minmax(220px,1fr) minmax(240px,1.05fr)}}
@media(max-width:950px){#hk-calculators .hk-layout{display:block}#hk-calculators .hk-sidebar{display:none}#hk-calculators .hk-mobile-nav{display:block;margin-bottom:26px}#hk-calculators .hk-mobile-nav label{display:block;font-size:13px;color:var(--hk-muted);margin-bottom:6px}#hk-calculators .hk-workbench{grid-template-columns:1fr 1.1fr}#hk-calculators .hk-brand small{font-size:10px}#hk-calculators .hk-collection{font-size:16px}}
@media(max-width:640px){#hk-calculators .hk-header{padding:18px 18px;gap:18px;min-height:84px;flex-wrap:wrap}#hk-calculators .hk-brand{font-size:26px}#hk-calculators .hk-collection{border:0;padding:0;font-size:15px}#hk-calculators .hk-shop{font-size:12px}#hk-calculators .hk-main{padding:24px 16px 18px}#hk-calculators .hk-heading h1{font-size:30px;letter-spacing:-.7px}#hk-calculators .hk-workbench,#hk-calculators .hk-method{grid-template-columns:1fr}#hk-calculators .hk-results-panel{border-left:0;border-top:1px solid var(--hk-line)}#hk-calculators .hk-method{gap:24px}#hk-calculators .hk-values .hk-primary dd{font-size:46px}#hk-calculators .hk-footer{display:block}#hk-calculators .hk-footer span{display:block;margin-bottom:4px}#hk-calculators .hk-input-panel,#hk-calculators .hk-results-panel{padding:20px}#hk-calculators .hk-related{display:grid;gap:14px}}
@media(prefers-reduced-motion:reduce){#hk-calculators *{scroll-behavior:auto!important}}
@media print{#hk-calculators .hk-sidebar,#hk-calculators .hk-mobile-nav,#hk-calculators .hk-related,#hk-calculators .hk-shop,#hk-calculators .hk-form-bottom{display:none}#hk-calculators .hk-layout{display:block}#hk-calculators .hk-main{padding:20px 0}#hk-calculators .hk-workbench{break-inside:avoid}#hk-calculators .hk-table-wrap{max-height:none;overflow:visible}}

/* The original horizontal Hifi Kit logo, exported from the supplied vector artwork. */
#hk-calculators .hk-brand{display:block;flex-shrink:0;width:205px;max-width:100%}
#hk-calculators .hk-brand img{display:block;width:100%;height:auto;max-width:100%;border:0}
#hk-calculators .hk-header--embedded{min-height:0;padding:14px 24px;border-top-width:3px}
#hk-calculators .hk-header--embedded .hk-collection{padding:0;border:0;font-size:16px}
/* Respond to the space supplied by the Magento theme, including narrower content columns. */
@container hktools (max-width:950px){
 #hk-calculators .hk-layout{display:block}
 #hk-calculators .hk-sidebar{display:none}
 #hk-calculators .hk-mobile-nav{display:block;margin-bottom:26px}
 #hk-calculators .hk-mobile-nav label{display:block;font-size:13px;color:var(--hk-muted);margin-bottom:6px}
 #hk-calculators .hk-main{padding:28px 24px 20px}
 #hk-calculators .hk-workbench{grid-template-columns:1fr 1.1fr}
}
@container hktools (max-width:640px){
 #hk-calculators .hk-header{padding:18px;gap:18px;flex-wrap:wrap}
 #hk-calculators .hk-brand{width:150px}
 #hk-calculators .hk-shop{display:none}
 #hk-calculators .hk-collection{border:0;padding:0;font-size:15px}
 #hk-calculators .hk-main{padding:24px 16px 18px}
 #hk-calculators .hk-workbench,#hk-calculators .hk-method{grid-template-columns:1fr}
 #hk-calculators .hk-results-panel{border-left:0;border-top:1px solid var(--hk-line)}
 #hk-calculators .hk-heading h1{font-size:30px}
 #hk-calculators .hk-footer{display:block}
 #hk-calculators .hk-footer span{display:block}
 #hk-calculators .hk-header--embedded{padding:12px 16px}
}
@media(max-width:640px){#hk-calculators .hk-brand{width:150px}#hk-calculators .hk-shop{display:none}}

/* Shared language selector stays visible when the embedded collection bar is hidden. */
#hk-calculators .hk-language, #hk-driver-database > .hk-language {
 display:flex;justify-content:flex-end;flex-wrap:wrap;gap:4px;padding:12px 20px;
 font:500 14px/1.4 Arial,sans-serif;border-bottom:1px solid #dce1e7;background:#fff;
}
#hk-calculators .hk-language button, #hk-driver-database > .hk-language button {
 appearance:none;display:inline-block;min-height:44px;padding:8px 14px;margin:0;
 border:1px solid #bdc6d1;border-radius:4px;background:#fff;color:#26384d;
 font:inherit;cursor:pointer;text-transform:none;letter-spacing:normal;
}
#hk-calculators .hk-language button[aria-pressed="true"], #hk-driver-database > .hk-language button[aria-pressed="true"] {
 background:#b6212b;color:#fff;border-color:#b6212b;
}
#hk-calculators .hk-language button:focus-visible, #hk-driver-database > .hk-language button:focus-visible {
 outline:3px solid #26384d;outline-offset:3px;
}
#hk-calculators[lang="sv"] .hk-nav-group a {overflow-wrap:break-word;hyphens:auto;}

/* PA inputs are grouped so drive settings stay reachable on mobile. */
#hk-calculators .hk-input-group{border:0;border-top:1px solid var(--hk-line);padding:12px 0;margin:0}
#hk-calculators .hk-input-group summary{cursor:pointer;font-size:14px;font-weight:700;line-height:1.5;color:var(--hk-ink);padding:4px 0}
#hk-calculators .hk-input-group[open] summary{margin-bottom:18px}
#hk-calculators .hk-field[hidden]{display:none!important}
#hk-calculators .hk-pa-plot{margin-top:24px}