:root{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#12304b;background:#f3f7fa;font-synthesis:none}*{box-sizing:border-box}body{margin:0}a{color:#086d65;text-underline-offset:3px}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #d66d43;outline-offset:3px}.calc-header{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px max(24px,calc((100vw - 1160px)/2));background:#102b45;color:white}.calc-header a{color:white;text-decoration:none}.calc-brand{font-size:24px;font-weight:750}.calc-header nav{display:flex;gap:24px;flex-wrap:wrap;font-size:16px}main{max-width:1160px;margin:auto;padding:30px 24px 45px}.calc-intro{max-width:850px;margin-bottom:25px}.eyebrow{color:#087f70;font-size:14px;font-weight:700;letter-spacing:.05em}h1{font-size:clamp(28px,4vw,40px);line-height:1.12;margin:12px 0}h2{font-size:23px;margin:0 0 20px}h3{font-size:18px}.calc-intro p,.calc-lesson p{font-size:17px;line-height:1.65}.calc-workbench{display:grid;grid-template-columns:minmax(280px,350px) minmax(0,1fr);border:1px solid #cad9e3;background:white;border-radius:14px;overflow:hidden}.calc-inputs{padding:26px;background:#eaf1f6;border-right:1px solid #cad9e3}.calc-field{display:block;margin:18px 0;font-size:16px;font-weight:600}.calc-field span{display:block;margin-bottom:7px}input,select{width:100%;min-height:46px;border:1px solid #9aaebd;border-radius:6px;background:white;color:#12304b;padding:10px;font-size:17px}input[aria-invalid=true]{border:2px solid #a93120}.calc-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}button{border:1px solid #8ba5b5;border-radius:6px;padding:10px 14px;cursor:pointer;background:white;color:#173b53;font-weight:600;font-size:16px}.calc-inputs button[type=submit]{background:#087f70;color:white;border-color:#087f70}button:disabled{opacity:.5;cursor:default}.calc-results{padding:26px;min-width:0}#metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.calc-metric{background:#f1f6f8;padding:14px;border-left:3px solid #087f70;overflow-wrap:anywhere}.calc-metric span{display:block;font-size:14px;color:#536b7c}.calc-metric strong{display:block;font-size:22px;margin-top:7px;line-height:1.35}.calc-figure{margin-top:20px}.calc-figure svg{display:block;width:100%;height:auto;min-height:160px}.calc-note{font-size:15px;line-height:1.6;color:#526b7b}.calc-steps{font:16px/1.7 system-ui;overflow-wrap:anywhere}.calc-steps p{margin:10px 0}.calc-lesson{background:white;border:1px solid #cad9e3;border-radius:12px;padding:26px;margin:25px 0}.calc-related h2{margin-top:30px}.calc-related-links{display:flex;flex-wrap:wrap;gap:16px;font-size:16px}.calc-catalog{display:grid;grid-template-columns:1fr 1fr;gap:20px}.calc-card{padding:25px;background:white;border:1px solid #cad9e3;border-top:4px solid #087f70;border-radius:10px;text-decoration:none;color:#12304b}.calc-card span{font-size:24px;font-weight:700}.calc-card p{font-size:17px;line-height:1.6;color:#536b7c}.calc-card:hover{border-color:#087f70}#calc-error{color:#a93120;line-height:1.5}#result-limit{color:#875019;font-size:15px;line-height:1.5}footer{max-width:1160px;margin:auto;padding:20px 24px;color:#526b7b;font-size:15px}[hidden]{display:none!important}@media(max-width:740px){.calc-header{padding:18px 20px;align-items:flex-start;flex-direction:column}.calc-header nav{gap:18px}main{padding:22px 16px}.calc-workbench{grid-template-columns:1fr}.calc-inputs{border-right:0;border-bottom:1px solid #cad9e3}.calc-inputs,.calc-results,.calc-lesson{padding:20px}.calc-catalog{grid-template-columns:1fr}.calc-metric strong{font-size:20px}}@media print{.calc-header,.calc-actions,.calc-related,footer{display:none}body{background:white}main{padding:0;max-width:none}.calc-workbench{grid-template-columns:35% 65%;border:none}.calc-inputs{background:white}.calc-lesson{border:0;padding:0}.calc-figure{break-inside:avoid}h2,h3{break-after:avoid}@page{size:A4;margin:12mm}}
@media(max-width:740px){.calc-figure svg text{font-size:28px}}