:root{color-scheme:light dark;--bg:#f5f4ef;--surface:#fffefb;--ink:#1b3029;--muted:#5d6e65;--line:#dce2d8;--brand:#176c59;--soft:#edf5ef}@media(prefers-color-scheme:dark){:root{--bg:#0e1613;--surface:#151f1b;--ink:#e5ede8;--muted:#a6b8ad;--line:#33453d;--brand:#79d2b4;--soft:#173029}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.85 system-ui,-apple-system,sans-serif}main{max-width:900px;margin:auto;padding:24px 22px 70px}a{color:var(--brand);text-underline-offset:4px}header{border-bottom:1px solid var(--line);padding-bottom:14px}.brand{font-weight:750;text-decoration:none}.breadcrumb{font-size:13px;color:var(--muted);margin:22px 0}h1{font-size:clamp(26px,5vw,38px);line-height:1.5;letter-spacing:-.025em}h2{font-size:23px;margin:40px 0 14px;line-height:1.6}h3{font-size:18px}.intro{font-size:18px}.updated,.hint{font-size:13px;color:var(--muted)}.calculator,.answer,.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:24px;margin:22px 0}.calculator h2{margin-top:0}.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}label{display:block;font-size:14px;font-weight:650}input,select{display:block;width:100%;min-width:0;padding:12px;margin-top:7px;font:inherit;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:10px}output{display:block;white-space:pre-line;overflow-wrap:anywhere;font-size:22px;font-weight:750;line-height:1.65;padding:20px;background:var(--soft);border-radius:12px;margin-top:20px}table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}td,th{padding:10px;border-bottom:1px solid var(--line);text-align:left}caption{text-align:left;color:var(--muted);font-size:13px}.table-scroll{overflow:auto}nav ul,.related{padding-left:22px}.cta{display:inline-block;background:var(--brand);color:var(--bg);font-weight:700;border-radius:10px;padding:12px 18px;text-decoration:none}footer{margin-top:45px;border-top:1px solid var(--line);padding-top:20px;font-size:13px}button{font:inherit}a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--brand);outline-offset:3px}@media(max-width:520px){main{padding:16px 16px 50px}.fields{grid-template-columns:1fr}.calculator,.answer,.card{padding:18px}th,td{padding:8px;font-size:14px}output{font-size:20px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}