/* tools.leadsmerchant.com — shared styles. System fonts only, no external requests. */
:root{
  --bg:#f7f9fb;--card:#ffffff;--ink:#1d2733;--muted:#566476;--line:#dbe2ea;
  --brand:#0b6e74;--brand-ink:#ffffff;--brand-soft:#e3f2f2;--warn:#8a5a00;--warn-soft:#fff6e0;
  --radius:12px;--shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:17px;line-height:1.55;color:var(--ink);background:var(--bg);overflow-wrap:break-word}
img{max-width:100%;height:auto}
a{color:var(--brand)}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid #f2a900;outline-offset:2px}
.skip{position:absolute;left:-999px;top:0;background:#000;color:#fff;padding:.5rem 1rem;z-index:10}
.skip:focus{left:0}
.wrap{max-width:1040px;margin:0 auto;padding:0 1rem}
header.site{background:var(--card);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem;padding-top:.7rem;padding-bottom:.7rem}
.logo{font-weight:700;text-decoration:none;color:var(--ink);font-size:1.05rem}
.logo span{color:var(--brand)}
nav.top a{margin-left:1rem;text-decoration:none;font-size:.95rem;white-space:nowrap;display:inline-block}
nav.top a:first-child{margin-left:0}
nav.top a[aria-current]{font-weight:700;text-decoration:underline}
main{padding:1.5rem 0 2.5rem}
h1{font-size:1.75rem;line-height:1.2;margin:.25rem 0 .5rem}
h2{font-size:1.3rem;margin:2rem 0 .6rem}
h3{font-size:1.08rem;margin:1.2rem 0 .4rem}
.lede{color:var(--muted);font-size:1.05rem;max-width:46rem;margin-top:0}
.crumbs{font-size:.88rem;color:var(--muted)}
.crumbs a{color:var(--muted)}
.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem 1.2rem;box-shadow:var(--shadow)}
.card h2,.card h3{margin-top:0}
.card.live{border-color:var(--brand)}
.card.soon{opacity:.8}
.tag{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;padding:.15rem .5rem;border-radius:99px;background:var(--brand-soft);color:var(--brand)}
.tag.grey{background:#eef1f4;color:var(--muted)}
.btn{display:inline-block;background:var(--brand);color:var(--brand-ink);border:0;border-radius:8px;padding:.65rem 1.1rem;font:inherit;font-weight:600;text-decoration:none;cursor:pointer}
.btn:hover{filter:brightness(1.08)}
.btn.secondary{background:var(--card);color:var(--brand);border:1px solid var(--brand)}
form.calc{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
fieldset{border:1px solid var(--line);border-radius:10px;padding:.7rem .9rem;margin:0;min-width:0}
legend{font-weight:600;padding:0 .3rem}
label{display:block;font-weight:600;margin-bottom:.25rem}
.field{min-width:0}
.hint{display:block;font-size:.85rem;color:var(--muted);font-weight:400;margin-top:.2rem}
input[type=number],input[type=text],input[type=email],select,textarea{width:100%;font:inherit;padding:.55rem .6rem;border:1px solid #b9c4d0;border-radius:8px;background:#fff;color:var(--ink)}
textarea{min-height:7rem}
.radio{display:flex;gap:.45rem;align-items:flex-start;font-weight:400;margin:.25rem 0}
.radio input{margin-top:.3rem}
.dims{display:grid;grid-template-columns:1fr 1fr;gap:.6rem}
.result{background:var(--card);border:2px solid var(--brand);border-radius:var(--radius);padding:1.1rem 1.2rem;margin-top:1.2rem}
.result .big{font-size:2rem;font-weight:800;line-height:1.1;margin:.2rem 0;color:var(--brand)}
.result .sub{color:var(--muted)}
.boxes{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));margin-top:1rem}
.box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.1rem}
.box h3{margin-top:0}
.formula{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92rem;background:#f1f5f8;border-radius:8px;padding:.6rem .7rem;overflow-x:auto;white-space:pre-wrap}
.note{background:var(--warn-soft);border-left:4px solid #d39b00;padding:.7rem .9rem;border-radius:6px;color:#4a3700}
.cite{font-size:.82rem;color:var(--muted)}
.cite a{color:var(--muted)}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:10px;background:var(--card)}
table{border-collapse:collapse;width:100%;font-size:.93rem}
th,td{text-align:left;padding:.5rem .6rem;border-bottom:1px solid var(--line);vertical-align:top}
th{background:#f1f5f8;font-weight:700}
tr.fit td{background:#eaf6ee}
caption{text-align:left;padding:.5rem .6rem;font-size:.85rem;color:var(--muted);caption-side:bottom}
ol.sources li,ul.sources li{margin-bottom:.45rem}
.checklist li{margin-bottom:.35rem}
.affiliate{border:1px dashed #9aa8b6;border-radius:10px;padding:.8rem 1rem;background:#fbfcfd}
.affiliate .label{font-size:.75rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);font-weight:700}
.disclosure-line{font-size:.85rem;color:var(--muted);border-top:1px solid var(--line);padding-top:.6rem;margin-top:1rem}
details{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:.6rem .9rem;margin:.5rem 0}
summary{cursor:pointer;font-weight:600}
footer.site{background:#eef2f6;border-top:1px solid var(--line);font-size:.88rem;color:var(--muted);padding:1.4rem 0}
footer.site p{margin:.3rem 0}
footer.site .addr{letter-spacing:.02em}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
@media (max-width:560px){
  body{font-size:16px}
  h1{font-size:1.45rem}
  nav.top a{margin-left:.7rem}
  .result .big{font-size:1.6rem}
  table{font-size:.82rem}
  th,td{padding:.4rem .35rem}
  .box{padding:.85rem .8rem}
}
@media print{header.site,nav,.affiliate,footer.site{display:none}}
/* guides */
.toc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:.8rem 1.1rem;margin:1rem 0 1.5rem}
.toc .label{margin:0 0 .3rem;font-weight:700;font-size:.85rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.toc ol{margin:0;padding-left:1.3rem}
.item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.2rem;margin:1rem 0;box-shadow:var(--shadow)}
.item h2{margin:0 0 .4rem;display:flex;gap:.6rem;align-items:baseline}
.num{flex:none;display:inline-grid;place-items:center;width:2rem;height:2rem;border-radius:50%;background:var(--brand);color:#fff;font-size:1rem}
.next{background:var(--brand-soft);border-radius:8px;padding:.55rem .8rem;margin-bottom:0}