:root{
  --brand:#28407a;--brand2:#3a62c4;--accent:#e08a2f;--ink:#1b2333;--muted:#5a6477;--bg:#f4f6fc;--card:#fff;
  --line:#dde3f0;--green:#1e7d55;--amber:#b8781a;--red:#b3392e;--radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65}
a{color:var(--brand2)}
.wrap{max-width:920px;margin:0 auto;padding:0 20px}
header.site{background:#1a2a54;color:#fff;padding:14px 0}
header.site .wrap{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.logo{font-weight:800;font-size:19px;color:#fff;text-decoration:none}
.logo .tick{color:#9fb6f0}
nav.top{margin-left:auto;display:flex;gap:18px;font-size:14px;flex-wrap:wrap}
nav.top a{color:#c3cff0;text-decoration:none}
.hero{padding:34px 22px 6px}
h1{font-size:28px;margin:0 0 8px;color:#1a2a54}
.sub{color:var(--muted);max-width:760px;font-size:16px}
code{background:#eaeefb;padding:1px 5px;border-radius:5px;font-size:.92em}
.badge-row{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 4px}
.badge{font-size:12.5px;background:#e5ebfb;color:var(--brand);padding:3px 10px;border-radius:20px}

.grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}
@media(max-width:760px){.grid{grid-template-columns:1fr}}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 1px 4px rgba(26,42,84,.06)}
.card h2{margin:0 0 14px;font-size:18px;color:#1a2a54}
label{display:block;font-size:13.5px;font-weight:700;color:var(--muted);margin:14px 0 6px}
label:first-of-type{margin-top:0}
input[type=number],input[type=text],select,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:9px;font:inherit;font-size:15px;background:#fbfcff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand2);outline-offset:1px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.row3{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.unit-toggle{display:flex;gap:6px;background:#eef1fa;border-radius:9px;padding:4px;width:fit-content}
.unit-toggle button{border:0;background:transparent;padding:6px 14px;border-radius:7px;font:inherit;font-weight:700;font-size:13.5px;color:var(--muted);cursor:pointer}
.unit-toggle button.on{background:#fff;color:var(--brand);box-shadow:0 1px 3px rgba(26,42,84,.12)}
.seg-label{font-size:13.5px;font-weight:700;color:var(--muted);margin:14px 0 6px}
.inline-fields{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap}
.inline-fields > div{flex:1;min-width:120px}

button.primary{width:100%;margin-top:18px;padding:13px 14px;border:0;border-radius:9px;background:var(--brand);color:#fff;font:inherit;font-weight:800;font-size:15px;cursor:pointer}
button.primary:hover{background:var(--brand2)}
button.ghost{padding:10px 14px;border:1px solid var(--line);background:#fff;border-radius:9px;font:inherit;font-weight:700;font-size:14px;color:var(--brand);cursor:pointer}
button.ghost:hover{background:#eef1fa}
button.ghost.sm{padding:6px 12px;font-size:13.5px}

.hint{font-size:13px;color:var(--muted)}
.muted{color:var(--muted)}
.err{color:var(--red);font-size:13.5px;font-weight:600;margin-top:8px}

/* result */
.result-hero{text-align:center;padding:6px 0 10px}
.result-hero .big{font-size:40px;font-weight:800;color:var(--brand);line-height:1.1}
.result-hero .range{font-size:16px;color:var(--muted);margin-top:6px}
.result-hero .label{font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-bottom:4px}
.method-block{margin-top:18px;border-top:1px solid var(--line);padding-top:14px}
.method-block h4{margin:0 0 4px;font-size:14px;color:#1a2a54}
.method-row{display:flex;justify-content:space-between;align-items:baseline;gap:10px;padding:4px 0;font-size:14.5px}
.method-row .v{font-weight:800;color:var(--brand);white-space:nowrap}
.rangebar{position:relative;height:10px;border-radius:6px;background:linear-gradient(90deg,#eef1fa,#c7d4f3,#eef1fa);margin:16px 0 4px}
.rangebar .mid{position:absolute;top:-4px;width:3px;height:18px;background:var(--brand);border-radius:2px;transform:translateX(-50%)}
.rangebar .lo{left:0}.rangebar .hi{right:0}
.scalehead{font-size:15px;margin:2px 0 12px}

.nf-table{width:100%;border-collapse:collapse;margin-top:8px;font-size:14.5px}
.nf-table th,.nf-table td{padding:7px 6px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.nf-table th{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.03em}
.nf-table td.amt{white-space:nowrap;font-weight:700;color:var(--brand)}
.pct-badge{display:inline-block;background:#e5ebfb;color:var(--brand);font-weight:800;padding:2px 12px;border-radius:14px;font-size:15px}

.disclaimer-box{background:#fff8ec;border:1px solid #f0dcb4;border-radius:10px;padding:14px 16px;margin:16px 0;font-size:13.5px;color:#6b531f}
.disclaimer-box b{color:#8a5a12}

/* ad slots */
.ad-slot{text-align:center;margin:16px auto;max-width:100%;overflow:hidden;min-height:0}
.ad-slot:empty{margin:0}

section.seo{background:#fff;border-top:1px solid var(--line);margin-top:34px;padding:34px 0}
section.seo h2{color:#1a2a54;font-size:22px}
section.seo h3{color:var(--brand);font-size:17px;margin-top:22px}
section.seo p,section.seo li{font-size:15px;color:#2a3142}
.faq dt{font-weight:700;margin-top:16px}
.faq dd{margin:4px 0 0}
.sources{font-size:13px;color:var(--muted)}
.sources li{margin:4px 0}
.cta-btn{display:inline-block;background:var(--brand2);color:#fff;padding:12px 22px;border-radius:8px;text-decoration:none;font-weight:700;margin-top:20px}

.related{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.related a{background:#eef1fa;color:var(--brand);padding:7px 13px;border-radius:8px;text-decoration:none;font-size:13.5px;font-weight:600}
.related a:hover{background:#dfe6f7}

footer.site{background:#1a2a54;color:#aeb9d8;font-size:13px;padding:24px 0;margin-top:0}
footer.site a{color:#c3cff0}
footer.site .disc{font-size:12px;color:#8a97bb;margin-top:8px}

@media(max-width:480px){h1{font-size:22px}.result-hero .big{font-size:32px}}

/* 2026-11 rebuild additions */
.logo{white-space:nowrap}
nav.top a[aria-current=page]{color:#fff;font-weight:700}
.related-wrap{margin-top:26px}
.related-wrap h3{margin-bottom:0}
section.seo h2{margin-top:28px}
section.seo .wrap > h2:first-child{margin-top:0}
.nf-table thead th{white-space:normal}
textarea{resize:vertical;min-height:120px}
form.card{margin:18px 0}
footer.site nav p{margin:0 0 8px;line-height:1.9}
@media(max-width:560px){header.site .wrap{gap:6px}nav.top{margin-left:0;gap:14px;font-size:13.5px}.hero{padding:20px 20px 4px}.sub{font-size:15px}}
.qstep.off{display:none}
.qnav{display:flex;gap:10px;margin-top:14px}
.qnav button[hidden]{display:none}