:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#183044;background:#f3f6f7;font-synthesis:none;--ink:#142c3c;--muted:#607685;--line:#dce5e9;--orange:#ee880c;--teal:#087d77}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #168baf;outline-offset:4px}a{color:#14627d}h1,h2,h3,p{margin:0}h1{font-size:clamp(32px,4vw,49px);line-height:1.07;letter-spacing:-1.8px}h2{font-size:22px;letter-spacing:-.6px}p{line-height:1.6}.top{height:86px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1240px)/2));gap:20px}.wordmark{font-size:25px;font-weight:900;letter-spacing:-1px;text-decoration:none;color:#112431;font-style:italic}.wordmark span{font-size:9px;display:block;font-style:normal;letter-spacing:3px;margin-top:3px}.top-right{display:flex;align-items:center;gap:20px}.private{font-size:12px;color:var(--muted)}.private:before{content:"";display:inline-block;border:2px solid #0f8e74;width:7px;height:7px;margin-right:8px;border-radius:50%}.test-banner{padding:9px 24px;text-align:center;background:#fff2d8;color:#7a4b06;font-size:12px;line-height:1.5}main{max-width:1288px;padding:30px 24px 0;margin:auto}.hero{border-radius:20px;background:linear-gradient(115deg,#0f2331 30%,#234b5a);color:#fff;padding:42px;display:flex;justify-content:space-between;align-items:center;gap:30px;position:relative;overflow:hidden}.hero:after{content:"";width:250px;height:500px;position:absolute;right:70px;top:-160px;border:1px solid #ffffff0e;transform:rotate(30deg);pointer-events:none}.hero p:not(.eyebrow){color:#c1d0d8;margin-top:18px;font-size:15px}.eyebrow{font-size:10px;letter-spacing:2px;font-weight:800;color:#ffab38;margin-bottom:15px}.eyebrow.dark{color:#587181;letter-spacing:1.7px;font-size:10px;margin-bottom:9px}.hero-stamp{padding:15px 25px 15px 50px;border-left:1px solid #ffffff26;font-size:62px;font-weight:800;letter-spacing:-3px;z-index:1}.hero-stamp span{display:block;font-size:14px;letter-spacing:0;line-height:1.6;color:#b9d0da;font-weight:400;margin-top:8px}.section-heading{display:flex;align-items:end;justify-content:space-between;margin:33px 0 18px;gap:14px}.small{font-size:12px;color:var(--muted);line-height:1.6}.models{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.model{border:1px solid var(--line);border-radius:12px;padding:20px;text-align:left;background:#fff;color:var(--ink);position:relative;transition:background .15s,border-color .15s}.model[aria-pressed=true]{background:#ecf7f6;border:2px solid var(--teal);padding:19px}.model[aria-pressed=true]:after{content:"✓";position:absolute;right:15px;top:16px;font-size:13px;color:var(--teal);font-weight:800}.model .kind{display:block;font-size:11px;color:var(--muted);margin-bottom:8px}.model strong{display:block;font-size:19px;letter-spacing:-.5px}.model .price{display:block;font-weight:600;font-size:15px;margin-top:17px}.model .price small{display:block;color:var(--muted);font-weight:400;font-size:10px;margin-top:4px}.calculator-grid{display:grid;grid-template-columns:minmax(0,440px) minmax(0,1fr);gap:22px;margin-top:28px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:15px;padding:26px}.inputs>p.small{margin:12px 0 19px}.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 16px;margin-top:20px}label{display:block;font-size:12px;line-height:1.5;font-weight:600;color:#304d60}label>span{display:block;font-size:10px;font-weight:400;color:var(--muted)}input{width:100%;min-width:0;border:1px solid #cbd8df;border-radius:7px;background:#fff;padding:11px 12px;color:var(--ink);margin-top:6px;outline:none;font-size:14px}input:focus{border-color:var(--teal);box-shadow:0 0 0 3px #087d7715}input[aria-invalid=true]{border-color:#b53535;background:#fff8f8}input::placeholder{color:#738695;opacity:1;font-size:12px}.wide{grid-column:1/-1}.primary,.quiet{border-radius:8px;padding:12px 17px;font-weight:600;font-size:13px;border:1px solid transparent}.primary{background:var(--teal);color:#fff;width:100%}.primary:hover{background:#06665f}.quiet{background:#fff;border-color:var(--line);color:#2d5066}.quiet:hover{background:#eef5f6}#calc-error{color:#a92929;font-size:12px;margin:14px 0}#calc-form>.primary{margin-top:3px}.support{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;border-top:3px solid var(--orange);padding-top:23px}.support strong{font-size:25px;letter-spacing:-.6px}.support p:not(.eyebrow){width:100%;font-size:12px;color:var(--muted);max-width:540px}.tag{font-size:10px;border-radius:20px;background:#fff1dc;color:#885009;padding:6px 10px;align-self:flex-start}.empty{margin-top:18px;min-height:275px;display:flex;justify-content:center;flex-direction:column;align-items:flex-start;background:#f9fbfc;border-style:dashed}.empty p{font-size:14px;color:var(--muted);max-width:430px;margin-top:10px}.empty-mark{font-size:36px;color:var(--teal);margin-bottom:16px}.result-heading{display:flex;gap:12px;align-items:center;justify-content:space-between;margin:24px 0 14px}.result-heading h2{font-size:20px}.result-heading span{font-size:11px;color:var(--muted)}.scenario-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.scenario{border:1px solid var(--line);border-radius:12px;background:#fff;padding:20px}.scenario.possible{background:#eaf5f3;border-color:#c1dfd9}.scenario .scenario-label{font-size:12px;font-weight:700;margin-bottom:15px;color:#516c7c}.scenario .amount{font-size:29px;font-weight:800;letter-spacing:-1px;line-height:1.2}.scenario .small{font-size:11px;margin-top:6px}.scenario .gain{font-size:14px;color:#086459;font-weight:700;border-top:1px solid #cbdedc;margin-top:16px;padding-top:13px}.scenario .gain.negative{color:#a43535}.detail-panel{margin-top:14px;padding:21px}.detail-panel h3{font-size:14px;margin-bottom:10px}.detail-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;font-size:12px;line-height:1.6;padding:9px 0;border-bottom:1px solid #ecf0f2}.detail-row:last-child{border:0}.detail-row span{color:var(--muted)}.detail-row strong{text-align:right}.detail-panel .small{margin-top:12px}.bar-row{margin-top:15px;display:grid;grid-template-columns:80px 1fr 95px;align-items:center;gap:10px;font-size:11px}.bar-track{height:8px;background:#e8eef1;border-radius:8px;overflow:hidden}.bar{height:100%;background:var(--teal);border-radius:8px}.bar.diesel{background:#70818f}.bar-row strong{text-align:right}.notice{padding:10px 13px;border-radius:7px;background:#fff3dd;color:#825612;font-size:12px;line-height:1.5;margin:12px 0}#download{margin-top:16px}.method{margin-top:28px}.method>p:not(.eyebrow){margin-top:12px;font-size:13px;color:var(--muted);max-width:980px}details{margin-top:18px;border-top:1px solid var(--line);padding-top:18px}summary{cursor:pointer;font-size:13px;font-weight:700}details p{font-size:13px;margin-top:15px;max-width:980px;color:var(--muted)}footer{max-width:1288px;padding:30px 24px;display:flex;justify-content:space-between;gap:20px;margin:auto;font-size:11px;color:var(--muted);line-height:1.6}.login-layout{display:grid;grid-template-columns:1.2fr 1fr;gap:30px;min-height:600px;align-items:center}.login-intro{background:linear-gradient(120deg,#102432,#204858);padding:55px 38px;border-radius:20px;color:#fff;min-height:500px;display:flex;flex-direction:column;justify-content:center}.login-intro>p:not(.eyebrow){color:#bed0d9;margin-top:24px;max-width:380px}.intro-tags{display:flex;flex-wrap:wrap;gap:18px;font-size:11px;margin-top:40px;color:#c2d3db}.login-panel{padding:36px}.login-panel>p:not(.eyebrow){margin:16px 0;font-size:13px;color:var(--muted)}.login-panel button{margin-top:15px}.login-panel label{margin-top:20px}.login-panel #login-message{color:#855717}[hidden]{display:none!important}
.model-picker{display:grid;grid-template-columns:180px minmax(0,1fr);gap:18px}.model-picker #selected-model{grid-column:1/-1;font-size:18px;font-weight:700;color:var(--teal)}select{font:inherit;width:100%;min-width:0;margin-top:6px;padding:11px 10px;border:1px solid #cbd8df;border-radius:7px;background:#fff;color:var(--ink)}fieldset{margin:24px 0;padding:18px 0 0;border:0;border-top:1px solid var(--line);min-width:0}legend{font-size:16px;font-weight:750;padding:0 10px 0 0}fieldset .fields{margin-top:14px}.inputs label{font-size:14px}.inputs label>span{font-size:12px}.inputs input,.inputs select{font-size:16px}.model-picker label{font-size:14px}.hero{padding:28px 36px}.hero h1{font-size:38px}.scenario .amount{font-size:26px}.scenario .small,.small{font-size:13px}.scenario .detail-row{display:block}.scenario .detail-row strong{display:block;text-align:left}.detail-panel .detail-row{font-size:13px}.result-column,.inputs{min-width:0}.detail-row{overflow-wrap:anywhere}.hero p:not(.eyebrow){font-size:16px}.model-picker select:focus{outline:2px solid var(--teal)}.inputs input:disabled{background:#eef2f4}
@media(max-width:540px){.model-picker{grid-template-columns:1fr}.scenario-grid{grid-template-columns:1fr}.hero h1{font-size:32px}.detail-row{flex-wrap:wrap;gap:4px}.detail-row strong{text-align:left}.top .private{display:none}}
@media(min-width:1450px){main{padding-top:38px}.hero{padding:32px}}
@media(max-width:950px){.calculator-grid{grid-template-columns:minmax(0,360px) minmax(0,1fr);gap:16px}.panel{padding:20px}.model{padding:15px}.model[aria-pressed=true]{padding:14px}.model strong{font-size:16px}.scenario{padding:16px}.scenario .amount{font-size:23px}.scenario-grid{gap:8px}.hero-stamp{font-size:50px}.bar-row{grid-template-columns:65px 1fr 80px}.login-layout{gap:20px}.login-intro{padding:35px 25px}}
@media(max-width:720px){.top{height:74px;padding:0 20px}.wordmark{font-size:22px}.private{font-size:10px}.top-right{gap:10px}main{padding:20px 16px 0}.hero{padding:28px 24px}.hero-stamp{display:none}.hero h1{font-size:35px}.hero p:not(.eyebrow){font-size:13px}.models{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.model{min-height:138px;padding:17px}.model[aria-pressed=true]{padding:16px}.model strong{font-size:17px}.model .kind{font-size:10px}.model .price{font-size:14px}.section-heading{align-items:start;flex-direction:column;margin-top:27px;gap:9px}.section-heading h2{font-size:21px}.calculator-grid{grid-template-columns:1fr;margin-top:20px}.panel{padding:22px}.result-column{min-width:0}.scenario .amount{font-size:24px}.scenario{padding:17px}.method{margin-top:20px}.method h2{font-size:20px}footer{flex-direction:column;gap:5px;padding:25px 18px}.login-layout{grid-template-columns:1fr;min-height:0}.login-intro{min-height:330px}.login-intro h1{font-size:38px}.login-panel{padding:26px}.bar-row{grid-template-columns:70px 1fr 88px}}
@media(max-width:370px){.private{display:none}.scenario-grid{grid-template-columns:1fr}.fields{gap:16px 10px}.panel{padding:18px}.model strong{font-size:15px}}

.conversion-box{border:1px solid #cfdfdf;background:#f1f8f7;border-radius:10px;padding:14px}.conversion-box .fields{margin-top:0}.conversion-box p{margin-top:12px}.inputs label>.use-label{font-size:14px;font-weight:600;color:#304d60}input[readonly]{background:#edf4f5;color:#174f55;font-weight:700}

/* Readable forms: give instructions and controls their own space at every width. */
.calculator-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.12fr);gap:28px}
.inputs{padding:30px}
.inputs>p.small{font-size:14px;line-height:1.75;margin:16px 0 24px}
.fields{gap:24px 20px;align-items:stretch}
.fields>label,.model-picker>label{display:flex;flex-direction:column;min-width:0;gap:5px;font-size:14px;line-height:1.55}
.fields>label>span{font-size:12px;line-height:1.6}
.fields>label>input,.fields>label>select{margin-top:auto}
input,select{min-height:48px}
select{display:block;margin-top:10px;line-height:1.45;padding:12px;white-space:normal}
.fields>label>span:last-of-type{margin-bottom:4px}
.inputs fieldset{margin:32px 0;padding:24px 0 0}
.inputs legend{font-size:18px;line-height:1.5;padding-right:14px}
.inputs fieldset>.small{font-size:14px;line-height:1.7;margin-bottom:20px}
.inputs fieldset .fields{margin-top:20px}
.conversion-box{padding:20px}
.conversion-box .fields{margin-top:0!important}
.conversion-box p{font-size:13px;line-height:1.75;margin-top:16px}
.model-picker{grid-template-columns:minmax(200px,1fr) minmax(0,2fr);gap:22px;padding:26px 30px}
.model-picker select{font-size:16px}
.model-picker #selected-model{line-height:1.5}
.detail-row{align-items:flex-start;gap:20px;padding:12px 0;line-height:1.75}
.detail-row>span{flex:1;min-width:0}
.detail-row>strong{flex:1;min-width:0}
.scenario-grid{grid-template-columns:1fr}
.scenario .detail-row{display:flex}
.scenario .detail-row strong{text-align:right}
.support p:not(.eyebrow){font-size:14px;line-height:1.75}
@media(max-width:1000px){
 .calculator-grid{grid-template-columns:1fr;gap:24px}
 .scenario-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .scenario .detail-row{display:block}
 .scenario .detail-row strong{text-align:left}
}
@media(max-width:600px){
 .inputs,.model-picker{padding:22px}
 .fields,.model-picker{grid-template-columns:1fr;gap:20px}
 .conversion-box{padding:18px}
 .scenario-grid{grid-template-columns:1fr}
 .detail-row{display:block}
 .detail-row>strong{display:block;text-align:left;margin-top:4px}
 .inputs fieldset{margin:28px 0}
}

/* Energain brand refresh · 12.10.2026 */
@font-face{font-family:"Barlow";src:url("../assets/fonts/barlow-latin-400-normal.woff2") format("woff2");font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:"Barlow Condensed";src:url("../assets/fonts/barlow-condensed-latin-900-normal.woff2") format("woff2");font-style:normal;font-weight:900;font-display:swap}
:root{font-family:"Barlow",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#f4f5f6;background:#090c0f;--ink:#f4f5f6;--muted:#a7b0b7;--line:#303840;--orange:#ff9918;--teal:#ff9918}
body{min-height:100vh;background:radial-gradient(circle at 85% 4%,rgba(255,153,24,.09),transparent 27rem),linear-gradient(180deg,#10151a 0,#090c0f 55%,#07090b 100%);color:var(--ink)}
a{color:#ffad43}
button:focus-visible,a:focus-visible,summary:focus-visible{outline-color:#ffad43}
.top{background:#f4f2ed;border-bottom:2px solid #ff9918;box-shadow:0 10px 36px rgba(0,0,0,.24)}
.wordmark{display:flex;align-items:center;gap:17px;color:#101419;font-style:normal}
.wordmark img{display:block;width:164px;height:auto}
.wordmark span{padding-left:17px;border-left:1px solid #c9c8c3;font-family:"Barlow",sans-serif;font-size:10px;font-weight:800;letter-spacing:2.4px;margin:0;color:#252b30}
.back-site{font-size:13px;font-weight:700;color:#1b242b;text-decoration:none;border-bottom:1px solid #ff9918;padding-bottom:2px}
.back-site:hover{color:#b65e00}
.private,#access-identity{color:#52606a}
.private:before{border-color:#ff9918}
main{padding-top:38px}
h1,.hero h1,.login-intro h1{font-family:"Barlow Condensed",sans-serif;font-weight:900;letter-spacing:-.02em;text-transform:uppercase}
h2,h3{color:#f6f7f8}
.eyebrow{color:#ff9918}
.eyebrow.dark{color:#ffad43}
.hero{background:linear-gradient(128deg,#181e23 0%,#0e1317 72%);border:1px solid #303840;box-shadow:0 24px 70px rgba(0,0,0,.28)}
.hero:after{border-color:rgba(255,153,24,.13)}
.hero p:not(.eyebrow),.hero-stamp span{color:#bcc4ca}
.hero-stamp{color:#ff9918;border-left-color:rgba(255,153,24,.35)}
.section-heading h2{color:#f6f7f8}
.small,label>span,.model .kind,.support p:not(.eyebrow),.empty p,.result-heading span,.detail-row span,.method>p:not(.eyebrow),details p{color:var(--muted)}
.panel,.model,.scenario,.detail-panel{background:linear-gradient(145deg,#171d22,#12171b);border-color:var(--line);box-shadow:0 14px 34px rgba(0,0,0,.16)}
.model{color:#f4f5f6}
.model:hover{border-color:#59636b}
.model[aria-pressed=true]{background:linear-gradient(145deg,rgba(255,153,24,.16),#151a1e);border-color:#ff9918}
.model[aria-pressed=true]:after{color:#ff9918}
label{color:#dce1e4}
input,select{background:#0c1115;border-color:#39434b;color:#f6f7f8}
input:focus,select:focus,.model-picker select:focus{border-color:#ff9918;box-shadow:0 0 0 3px rgba(255,153,24,.14);outline:none}
input::placeholder{color:#78848d}
input[readonly],.inputs input:disabled{background:#141a1f;color:#ffbd66}
.primary{background:#ff9918;color:#17120b;border-color:#ff9918;font-weight:800}
.primary:hover{background:#ffad43}
.quiet{background:#171d22;border-color:#3a444c;color:#eef1f3}
.quiet:hover{background:#222a30;border-color:#59636b}
.support{border-top-color:#ff9918}
.tag{background:rgba(255,153,24,.15);color:#ffbd66}
.empty{background:#0e1317;border-color:#3b454d}
.empty-mark{color:#ff9918}
.scenario.possible{background:linear-gradient(145deg,rgba(255,153,24,.14),#151a1e);border-color:rgba(255,153,24,.42)}
.scenario .scenario-label{color:#bdc5cb}
.scenario .gain{color:#ffbd66;border-top-color:#3f474e}
.detail-row{border-bottom-color:#2a3238}
.bar-track{background:#2a3238}
.bar{background:#ff9918}
.bar.diesel{background:#7b868f}
.notice{background:rgba(255,153,24,.12);color:#ffd298;border:1px solid rgba(255,153,24,.24)}
.conversion-box{border-color:#3b454d;background:#0e1418}
fieldset,details{border-color:#303840}
.login-layout{min-height:calc(100vh - 185px)}
.login-intro{position:relative;background:radial-gradient(circle at 88% 18%,rgba(255,153,24,.24),transparent 16rem),linear-gradient(135deg,#1b2228 0%,#0c1115 82%);border:1px solid #343d44;box-shadow:0 24px 70px rgba(0,0,0,.25);overflow:hidden}
.login-intro:after{content:"";position:absolute;width:320px;height:320px;border:1px solid rgba(255,153,24,.12);right:-160px;bottom:-190px;transform:rotate(28deg)}
.login-intro>p:not(.eyebrow),.intro-tags{color:#c4cbd0}
.login-panel{background:linear-gradient(150deg,#181e23,#11161a);border-color:#343d44}
.login-panel>p:not(.eyebrow){color:#aeb7bd}
footer{border-top:1px solid #242c32;color:#89949c}
@media(max-width:720px){.top{padding:14px 18px;align-items:center}.wordmark img{width:132px}.wordmark span{font-size:8px;letter-spacing:1.8px;padding-left:12px}.back-site{font-size:12px}.login-intro{min-height:300px}.login-intro h1{font-size:42px}}
@media(max-width:540px){.top-right{width:100%;justify-content:space-between}.wordmark{gap:10px}.wordmark span{display:none}}