.calculator-main{padding-top:76px;background:#06151f}
.calculator-intro{padding-top:68px;padding-bottom:38px;max-width:1180px}
.calculator-intro h1{font-size:clamp(2.25rem,4.5vw,4rem);line-height:1.06;letter-spacing:-.045em;margin:16px 0 22px;max-width:850px}
.calculator-intro h1 span{color:#19d4ec}
.calculator-intro>p{color:#b9cedb;max-width:760px;font-size:1.06rem}
.calculator-content{display:grid;gap:30px}
.calculator-form,.calculator-results{min-width:0;border:1px solid #21485c;border-radius:22px;background:#091d29;padding:32px}
.calculator-mode{border:0;margin:0 0 30px;padding:0;display:flex;flex-wrap:wrap;gap:14px}
.calculator-mode legend{font-weight:800;font-size:1.2rem;margin-bottom:14px}
.calculator-mode label{display:flex;align-items:center;gap:9px;min-height:48px;padding:10px 18px;border-radius:12px;background:#103346;color:#edf8ff;cursor:pointer}
.calculator-mode label:has(input:checked){background:#19d4ec;color:#02212d}
.calculator-mode input{accent-color:#023644;width:18px;height:18px}
.calculator-fields{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.calculator-fields.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.calculator-form label{min-width:0;font-weight:650;color:#d9e9f2}
.calculator-form label:has(input[type="radio"]:checked){color:#02212d}
.calculator-form select,.calculator-form input:not([type="radio"]){display:block;width:100%;min-width:0;margin-top:8px;border:1px solid #326077;border-radius:10px;min-height:48px;padding:11px 12px;background:#04121b;color:#f8fbff;font:inherit;font-size:16px}
.calculator-form input:focus-visible,.calculator-form select:focus-visible{outline:2px solid #19d4ec;outline-offset:2px}
.calculator-form select:disabled{opacity:.6}
.calculator-block{margin-top:30px;padding-top:24px;border-top:1px solid #21485c}
.calculator-block h2{font-size:1.45rem;letter-spacing:-.02em;margin:0 0 18px;line-height:1.2}
.calculator-help{color:#adc7d6;font-size:.9rem;line-height:1.65;margin:14px 0}
.calculator-adjustments,.calculator-method{border:1px solid #285367;border-radius:12px;padding:18px;margin:24px 0}
.calculator-adjustments summary,.calculator-method summary{font-weight:750;cursor:pointer;color:#d5edf8;min-height:30px}
.calculator-adjustments[open] .calculator-fields{margin-top:22px}
.calculator-submit,.calculator-secondary{display:inline-flex;align-items:center;justify-content:center;text-align:center;min-height:48px;padding:12px 22px;border-radius:12px;font:inherit;font-weight:800;cursor:pointer;text-decoration:none}
.calculator-submit{background:#19d4ec;color:#02212d;border:1px solid #45e4f3}
.calculator-submit:hover{background:#45e4f3}
.calculator-secondary{background:#123449;color:#d9f3ff;border:1px solid #356178}
.calculator-submit:focus-visible,.calculator-secondary:focus-visible{outline:3px solid #f8fbff;outline-offset:3px}
.calculator-error{border-left:3px solid #ffab87;background:#392324;color:#ffe4d7;padding:12px 16px;border-radius:8px}
.appliance-add{display:flex;align-items:flex-end;flex-wrap:wrap;gap:14px;margin:18px 0 24px}
.appliance-add>label{flex:1;min-width:190px}
.appliance-rows{display:grid;gap:16px}
.appliance-row{background:#0d2838;border:1px solid #285467;border-radius:14px;padding:18px;min-width:0}
.appliance-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}
.appliance-heading strong{font-size:1.05rem}
.appliance-remove{font:inherit;color:#d8eef8;background:transparent;border:1px solid #477286;border-radius:8px;padding:8px 12px;min-height:44px;cursor:pointer}
.appliance-row .calculator-fields{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.appliance-row details{margin-top:14px;color:#abc8d8}
.appliance-row details .calculator-fields{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:12px}
.calculator-appliance-total{color:#45e4f3;font-weight:750}
.calculator-results h2{font-size:clamp(1.7rem,3vw,2.5rem);line-height:1.1;margin:16px 0}
.calculator-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:26px 0}
.calculator-metrics>div{background:#0c3547;border-radius:14px;padding:22px}
.calculator-metrics span,.calculator-metrics small{display:block;color:#bedaeb}
.calculator-metrics strong{display:block;font-size:clamp(1.8rem,3.5vw,2.65rem);color:#45e4f3;line-height:1.3;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.calculator-specs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.calculator-specs>div{padding:16px 0;border-top:1px solid #285166}
.calculator-specs span,.calculator-specs strong{display:block}
.calculator-specs span{color:#a9c6d6}.calculator-specs strong{color:#f8fbff;font-size:1.1rem}
.calculator-result-actions{display:flex;flex-wrap:wrap;gap:14px;margin:24px 0}
.calculator-method li{color:#bad3e0;margin:10px 0;font-size:.92rem}
[hidden]{display:none!important}
@media(max-width:640px){.calculator-main{padding-top:68px}.calculator-intro{padding-top:44px}.calculator-form,.calculator-results{padding:22px 18px}.calculator-fields,.calculator-fields.two,.calculator-metrics,.calculator-specs{grid-template-columns:1fr}.calculator-mode label{flex:1;justify-content:center;padding:10px 12px}.appliance-row{padding:16px}.appliance-row .calculator-fields{grid-template-columns:repeat(2,minmax(0,1fr))}.calculator-result-actions>a,.calculator-form>.calculator-submit{width:100%}.calculator-metrics>div{padding:18px}}