:root{--bg:#f7f7f5;--card:#ffffff;--text:#1c1e21;--muted:#5f6368;--line:#e2e2de;--accent:#c2410c;--accent-soft:#fff1e8}@media (prefers-color-scheme:dark){:root{--bg:#141516;--card:#1d1f21;--text:#e8e8e6;--muted:#a0a3a8;--line:#2e3033;--accent:#fb923c;--accent-soft:#2a1d14}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}a{color:var(--accent)}.wrap{max-width:860px;margin:0 auto;padding:0 16px}.site-header{background:var(--card);border-bottom:1px solid var(--line)}.site-header .wrap{height:56px;display:flex;align-items:center;justify-content:space-between}.regions{display:flex;gap:12px;font-size:.85rem}.regions a{color:var(--muted);text-decoration:none}.regions a:hover{color:var(--accent)}.logo{font-weight:700;font-size:1.15rem;color:var(--text);text-decoration:none}.site-footer{margin-top:48px;padding:24px 0;border-top:1px solid var(--line);color:var(--muted);font-size:.875rem}.site-footer nav{display:flex;gap:16px;flex-wrap:wrap}h1{font-size:clamp(1.6rem,4vw,2.2rem);line-height:1.2;margin:8px 0}h2{font-size:1.35rem;margin-top:32px}.lead{margin-top:0}.crumbs,.lead{color:var(--muted)}.crumbs{font-size:.85rem;padding-top:16px}.crumbs a{color:var(--muted)}.calc{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;margin:20px 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-gap:14px 18px;gap:14px 18px}.field{display:flex;flex-direction:column;gap:4px}.field-label{font-weight:600;font-size:.9rem}.field-input{display:flex;align-items:stretch}.field input,.field select{width:100%;font:inherit;padding:10px 12px;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:8px}.field-input input{border-top-right-radius:0;border-bottom-right-radius:0}.field-input:not(:has(.unit)) input{border-radius:8px}.unit{display:flex;align-items:center;padding:0 10px;border:1px solid var(--line);border-left:0;border-radius:0 8px 8px 0;color:var(--muted);font-size:.85rem;white-space:nowrap}.field input:focus,.field select:focus{outline:2px solid var(--accent);outline-offset:1px}.hint{font-size:.78rem;color:var(--muted)}.results{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));grid-gap:10px;gap:10px;margin-top:20px}.result{padding:12px;border-radius:8px;background:var(--bg);display:flex;flex-direction:column}.result.main{background:var(--accent-soft)}.result-label{font-size:.8rem;color:var(--muted)}.result-value{font-size:1.25rem;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.result.main .result-value{color:var(--accent);font-size:1.5rem}.ad{margin:24px 0;min-height:100px}.ad-placeholder{display:flex;align-items:center;justify-content:center;border:1px dashed var(--line);border-radius:8px;color:var(--muted);font-size:.8rem}.content table{width:100%;border-collapse:collapse;font-size:.92rem}.content td,.content th{border:1px solid var(--line);padding:8px;text-align:left}.content th{background:var(--card)}.formula,.table-scroll{overflow-x:auto}.formula{border-left:3px solid var(--accent);padding:10px 14px;font-family:ui-monospace,Menlo,monospace;font-size:.9rem}.faq details,.formula{background:var(--card)}.faq details{border:1px solid var(--line);border-radius:8px;padding:12px 16px;margin-bottom:8px}.faq summary{cursor:pointer;font-weight:600}.related ul{padding-left:18px}.related span{color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:12px;gap:12px}.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;color:var(--text);text-decoration:none}.card:hover{border-color:var(--accent)}.card strong{display:block}.card span{color:var(--muted);font-size:.9rem}