.concentration-calculator{margin:20px 7vw 70px;padding:clamp(26px,5vw,54px);border:1px solid rgba(216,173,75,.38);border-radius:28px;background:linear-gradient(145deg,rgba(216,173,75,.1),rgba(12,12,12,.98) 48%);box-shadow:0 24px 70px rgba(0,0,0,.35)}
.calculator-help{color:var(--muted);font-size:12px;font-weight:400;line-height:1.5}
.calculator-intro{max-width:760px;margin-bottom:28px}.calculator-intro h2{font-size:clamp(30px,4vw,48px);margin:8px 0 12px}.calculator-intro>p:last-child{color:var(--muted);line-height:1.65}.calculator-panel{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(250px,.65fr);gap:24px}.calculator-fields{display:grid;gap:16px}.calculator-fields label{display:grid;gap:8px;color:var(--cream);font-weight:700}.calculator-fields select,.calculator-fields input{width:100%;min-height:52px;border:1px solid var(--line);border-radius:14px;background:#090909;color:var(--cream);padding:13px 15px;font-size:16px}.calculator-fields input[readonly]{color:var(--gold);font-weight:900}.field-with-unit{position:relative}.field-with-unit input{padding-right:58px}.field-with-unit>span{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--muted);font-weight:800}.calculator-result{display:flex;min-height:190px;flex-direction:column;justify-content:center;border:1px solid var(--gold);border-radius:20px;padding:24px;background:rgba(0,0,0,.36)}.calculator-result small{color:var(--muted);text-transform:uppercase;letter-spacing:1.5px}.calculator-result strong{display:block;color:var(--gold);font-size:clamp(32px,4vw,48px);margin:12px 0}.calculator-result p{color:var(--muted);line-height:1.5;margin:0}.calculator-warning{grid-column:1/-1;margin:0;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:13px;line-height:1.6}@media(max-width:760px){.concentration-calculator{margin-left:18px;margin-right:18px;padding:24px 18px}.calculator-panel{grid-template-columns:1fr}.calculator-result{min-height:150px}}