:root{--ink:#102a31;--muted:#587079;--teal:#087f8c;--teal2:#0ca4a5;--mint:#e0f6f3;--line:#d6e4e5;--bg:#f5faf9;--warn:#fff4d7;--danger:#ffe5e3;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-size:16px;line-height:1.6}a{color:inherit}.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.nav{max-width:1120px;margin:auto;height:66px;padding:0 20px;display:flex;align-items:center;gap:24px}.logo{font-weight:900;text-decoration:none;font-size:1.2rem;letter-spacing:-.04em}.logo b{color:var(--teal)}nav{margin-left:auto;display:flex;gap:20px}nav a{text-decoration:none;color:var(--muted);font-weight:700;font-size:.92rem}.menu{display:none;margin-left:auto;border:0;background:none;font-size:1.4rem}.wrap{max-width:1120px;margin:auto;padding:40px 20px 72px}.hero{display:grid;grid-template-columns:.9fr 1.1fr;gap:42px;align-items:center;padding:20px 0 36px}h1,h2,h3{line-height:1.12;letter-spacing:-.035em}h1{font-size:clamp(2.55rem,6vw,5rem);margin:12px 0 18px}h2{font-size:clamp(1.6rem,3vw,2.35rem)}.lead{font-size:1.16rem;color:var(--muted);max-width:62ch}.pill{display:inline-flex;background:var(--mint);color:var(--teal);border-radius:999px;padding:5px 10px;font-weight:850;font-size:.78rem;text-transform:uppercase;letter-spacing:.08em}.panel,.card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 14px 38px rgba(16,42,49,.06)}.panel{padding:22px}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.tab{border:1px solid var(--line);background:#fff;padding:9px 12px;border-radius:999px;font-weight:750;cursor:pointer}.tab.active{background:var(--teal);color:#fff;border-color:var(--teal)}.tool{display:none}.tool.active{display:block}.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field label{display:block;font-weight:750;font-size:.88rem;margin-bottom:5px}.field input{width:100%;padding:11px;border:1px solid #b8cbce;border-radius:9px;font:inherit}.result{margin-top:18px;padding:17px;background:var(--mint);border-radius:12px}.result strong{display:block;color:var(--teal);font-size:1.8rem}.status{font-weight:800}.section{padding:42px 0}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{padding:20px;text-decoration:none}.card p{color:var(--muted)}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.step{padding:18px;border-left:4px solid var(--teal);background:#fff}.article{max-width:780px}.article h1{font-size:clamp(2.35rem,5vw,4rem)}.article h2{margin-top:42px}.source{padding:14px 16px;background:#eef4f4;border-radius:9px;font-size:.92rem}.warning{padding:16px;background:var(--warn);border-left:4px solid #e0a100;border-radius:0 10px 10px 0}.critical{background:var(--danger)}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:11px;border-bottom:1px solid var(--line)}.log{margin-top:18px}.log button,.primary{background:var(--teal);color:#fff;border:0;border-radius:9px;padding:11px 15px;font-weight:800;cursor:pointer}.secondary{background:#fff;color:var(--teal);border:1px solid var(--teal);border-radius:9px;padding:10px 14px;font-weight:800;cursor:pointer}footer{background:#0d252a;color:#d9e8e9}.foot{max-width:1120px;margin:auto;padding:40px 20px;display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}.foot a{display:block;text-decoration:none;margin:7px 0}.fine{color:#9bb5b8;font-size:.84rem}@media(max-width:800px){.hero,.cards,.steps{grid-template-columns:1fr}.grid{grid-template-columns:1fr}.menu{display:block}nav{display:none;position:absolute;left:0;right:0;top:66px;background:#fff;padding:18px 20px;flex-direction:column;border-bottom:1px solid var(--line)}nav.open{display:flex}.foot{grid-template-columns:1fr}.wrap{padding-top:26px}}.skip{position:fixed;left:12px;top:-80px;z-index:100;background:#fff;color:#111;padding:10px 14px;border:2px solid var(--brand);border-radius:8px}.skip:focus{top:12px}.tab:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,button:focus-visible{outline:3px solid var(--brand);outline-offset:3px}
select{width:100%;padding:11px;border:1px solid #b8cbce;border-radius:9px;background:#fff;font:inherit}.metric{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}.metric div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px}.metric b{display:block;font-size:1.35rem;color:var(--teal)}.formula{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#eef4f4;padding:12px;border-radius:9px}.mini{font-size:.86rem;color:var(--muted)}@media(max-width:800px){.metric{grid-template-columns:1fr}}