:root{--calc-ink:#171b21;--calc-panel:#20262f;--calc-orange:#f26522;--calc-orange-dark:#db4e0d;--calc-paper:#f2f3f5;--calc-line:#dfe2e6;--calc-muted:#6b7280;--calc-green:#18864b}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--calc-ink);-webkit-font-smoothing:antialiased;background:#fbfbfc;margin:0;font-family:Inter,system-ui,sans-serif}a{color:inherit}button,input,select,textarea{font:inherit}:where(a,button,input,select,textarea):focus-visible{outline-offset:3px;outline:3px solid #f2652261}.calc-skip{z-index:100;background:#fff;border-radius:9px;padding:11px 16px;font-weight:800;transition:transform .16s;position:fixed;top:10px;left:10px;transform:translateY(-160%)}.calc-skip:focus{transform:translateY(0)}.calc-header{z-index:50;color:#fff;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#171b21f7;border-bottom:1px solid #ffffff14;position:sticky;top:0}.calc-header__inner{align-items:center;gap:18px;width:min(1340px,100% - 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