*{box-sizing:border-box}body{margin:0;background:var(--bg);color:#17212b;font:17px/1.6 system-ui,sans-serif}header,main,footer{max-width:1120px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid #ccd2d7}header strong{font-size:22px;letter-spacing:-.8px}small{font-size:14px}h1{font-size:clamp(30px,4vw,52px);line-height:1.12;letter-spacing:-1.5px;max-width:780px;margin:20px 0}h2{font-size:24px;line-height:1.3}.intro{max-width:720px;color:#475363}.workspace{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;margin:30px 0}.inputs{display:grid;grid-template-columns:1fr 1fr;gap:18px;background:white;padding:28px;border-radius:12px;border:1px solid #d5dbdf}label{display:block;font-size:15px;font-weight:600}input{display:block;width:100%;font:inherit;margin-top:8px;border:1px solid #8896a1;border-radius:6px;padding:12px;color:#17212b;background:#fff}input:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:3px}button{background:var(--accent);color:white;border:0;border-radius:6px;padding:14px 24px;font:600 16px system-ui;cursor:pointer;grid-column:1/-1;min-height:48px}.result{padding:30px;background:#142530;color:white;border-radius:12px;display:flex;flex-direction:column;justify-content:center}.result strong{font-size:clamp(32px,4vw,50px);line-height:1.2;display:block;margin:12px 0;overflow-wrap:anywhere}.result p{color:#dde7ec}.result small{color:#c5d1d8}article{max-width:850px;border-top:1px solid #ccd2d7;padding:18px 0}.formula{border-left:4px solid var(--accent);padding:12px 18px;background:white}footer{font-size:14px;color:#475363}#error{color:#aa2316;grid-column:1/-1;margin:0}a{color:var(--accent)}@media(max-width:700px){header{display:block}.workspace{grid-template-columns:1fr}.inputs{padding:20px}.result{min-height:230px}main,header,footer{padding:20px}}@media(max-width:410px){.inputs{grid-template-columns:1fr}}@media(prefers-reduced-motion:no-preference){.result{animation:appear .35s ease-out}@keyframes appear{from{opacity:.4;transform:translateY(6px)}to{opacity:1;transform:none}}}
nav{font-size:15px;line-height:2;padding:16px 0;border-bottom:1px solid #ccd2d7}nav a{display:inline-block;padding:4px 0;margin-right:8px}article p{max-width:72ch}.skip{position:absolute;left:-10000px}.skip:focus{left:16px;top:8px;background:white;padding:12px;z-index:10}
main,article,nav,header,footer,.workspace,.inputs,.result{min-width:0;overflow-wrap:anywhere}footer nav a{min-height:44px;padding:10px 0}header strong{flex-shrink:0}@media(max-width:700px){header strong,header small{display:block}header small{margin-top:8px}}