:root{
  --bg:#f6f8fc;
  --surface:#ffffff;
  --surface-2:#f0f4ff;
  --text:#172033;
  --muted:#667085;
  --line:#e4e9f2;
  --brand:#3157d5;
  --brand-2:#6e4be8;
  --success:#147d64;
  --shadow:0 18px 50px rgba(27,41,81,.10);
  --radius:22px;
  --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  background:
    radial-gradient(circle at 15% 0%,rgba(49,87,213,.10),transparent 28rem),
    radial-gradient(circle at 90% 10%,rgba(110,75,232,.09),transparent 24rem),
    var(--bg);
  color:var(--text);
  line-height:1.65;
}
a{color:var(--brand);text-decoration-thickness:.08em;text-underline-offset:.16em}
a:hover{color:#233fa5}
img{max-width:100%;height:auto}
.container{width:min(var(--max),calc(100% - 32px));margin-inline:auto}
.skip-link{position:absolute;left:-9999px;top:auto}
.skip-link:focus{left:16px;top:16px;z-index:999;background:#fff;padding:10px 14px;border-radius:10px}
.site-header{
  position:sticky;top:0;z-index:50;
  backdrop-filter:saturate(160%) blur(16px);
  background:rgba(246,248,252,.88);
  border-bottom:1px solid rgba(228,233,242,.8);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:11px;color:var(--text);text-decoration:none;font-weight:800;letter-spacing:-.02em}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:white;box-shadow:0 10px 24px rgba(49,87,213,.23)}
.nav-links{display:flex;flex-wrap:wrap;gap:18px;align-items:center}
.nav-links a{color:#39435a;text-decoration:none;font-size:.93rem;font-weight:650}
.hero{padding:72px 0 34px}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:46px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#edf2ff;color:#2949b8;border:1px solid #dbe4ff;border-radius:999px;padding:7px 11px;font-size:.82rem;font-weight:760}
h1,h2,h3{line-height:1.16;letter-spacing:-.035em;margin-top:0}
h1{font-size:clamp(2.45rem,6vw,4.9rem);margin:.26em 0 .25em;max-width:900px}
h2{font-size:clamp(1.65rem,3vw,2.45rem);margin-bottom:.45em}
h3{font-size:1.2rem;margin-bottom:.4em}
.lead{font-size:clamp(1.04rem,2vw,1.25rem);color:#536077;max-width:760px;margin:0 0 24px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0 0;padding:0;list-style:none}
.hero-points li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 12px;font-size:.9rem;box-shadow:0 7px 20px rgba(30,43,74,.05)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.calculator{padding:24px}
.calc-tabs{display:grid;grid-template-columns:1fr 1fr;background:#f2f5fb;border-radius:14px;padding:5px;gap:5px;margin-bottom:20px}
.tab-btn{border:0;background:transparent;border-radius:10px;padding:11px 10px;font-weight:760;color:#5b6475;cursor:pointer}
.tab-btn[aria-selected="true"]{background:#fff;color:var(--text);box-shadow:0 4px 14px rgba(39,54,95,.08)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field.full{grid-column:1/-1}
label{display:block;font-weight:700;font-size:.9rem;margin-bottom:6px}
.input-wrap{position:relative}
.prefix{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:#6a7487;font-weight:700}
input,select{
  width:100%;border:1px solid #d9dfeb;background:#fff;color:var(--text);
  border-radius:12px;padding:12px 13px;font:inherit;outline:none;
}
input.with-prefix{padding-left:30px}
input:focus,select:focus{border-color:#8fa3ea;box-shadow:0 0 0 4px rgba(49,87,213,.10)}
.helper{font-size:.78rem;color:var(--muted);margin-top:5px}
.results{margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}
.result-primary{background:linear-gradient(135deg,#2e54d3,#6848dd);color:white;border-radius:16px;padding:18px 20px;margin-bottom:12px}
.result-primary small{display:block;opacity:.85;font-weight:650}
.result-primary strong{display:block;font-size:2rem;line-height:1.2;margin-top:4px}
.result-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.result-item{background:#f7f9fd;border:1px solid #e9edf5;border-radius:13px;padding:12px}
.result-item span{display:block;color:#6c7689;font-size:.78rem}
.result-item strong{font-size:1.04rem}
.disclaimer{font-size:.78rem;color:#717b8d;margin:12px 0 0}
.trust-strip{padding:22px 0 44px}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.trust-item{padding:16px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.75)}
.trust-item strong{display:block;font-size:.93rem}
.trust-item span{display:block;font-size:.8rem;color:var(--muted)}
.section{padding:68px 0}
.section.soft{background:rgba(255,255,255,.55);border-block:1px solid var(--line)}
.section-intro{max-width:760px;color:var(--muted);margin-bottom:30px}
.content-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px}
.info-card{padding:24px}
.formula{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;background:#eef2ff;color:#263b86;border:1px solid #dfe6ff;border-radius:14px;padding:15px 17px;font-weight:700;overflow:auto}
.example{border-left:4px solid var(--brand);padding:12px 0 12px 16px;color:#47526a}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;background:#fff}
table{border-collapse:collapse;width:100%;min-width:660px}
th,td{text-align:left;padding:13px 16px;border-bottom:1px solid #edf0f5}
th{background:#f6f8fc;color:#4c576e;font-size:.82rem;text-transform:uppercase;letter-spacing:.04em}
tr:last-child td{border-bottom:0}
td:first-child{font-weight:760}
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.link-card{padding:22px;text-decoration:none;color:var(--text)}
.link-card:hover{transform:translateY(-2px);box-shadow:0 20px 46px rgba(27,41,81,.12);color:var(--text)}
.link-card p{color:var(--muted);margin-bottom:0}
.faq{display:grid;gap:12px}
details{background:#fff;border:1px solid var(--line);border-radius:15px;padding:0 18px}
summary{cursor:pointer;font-weight:760;padding:16px 0}
details p{color:#59647a;margin-top:0;padding-bottom:16px}
.source-note{padding:18px 20px;background:#f6f8ff;border:1px solid #dfe6ff;border-radius:15px;color:#52607a}
.site-footer{padding:38px 0 46px;border-top:1px solid var(--line);background:#fff}
.footer-grid{display:flex;justify-content:space-between;gap:24px;align-items:flex-start}
.footer-grid p{color:var(--muted);max-width:720px;margin:.5em 0 0}
.breadcrumb{font-size:.86rem;color:var(--muted);padding-top:24px}
.breadcrumb a{color:#52607a}
.page-hero{padding:42px 0 24px}
.page-hero h1{font-size:clamp(2.2rem,5vw,4.2rem);max-width:920px}
.prose{max-width:840px}
.prose p,.prose li{color:#4e5a70}
.prose ul{padding-left:20px}
.callout{background:#eef8f5;border:1px solid #d6eee6;border-radius:16px;padding:16px 18px;color:#315d51}
.cta{background:linear-gradient(135deg,#172a68,#563db4);color:#fff;border-radius:24px;padding:30px}
.cta p{color:#e7eaff}
.cta a{display:inline-block;background:#fff;color:#253e98;text-decoration:none;font-weight:800;border-radius:12px;padding:11px 15px}
@media(max-width:900px){
  .hero-grid,.content-grid{grid-template-columns:1fr}
  .hero{padding-top:48px}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .link-cards{grid-template-columns:1fr}
  .nav-links{display:none}
}
@media(max-width:560px){
  .container{width:min(var(--max),calc(100% - 22px))}
  .form-grid,.result-grid{grid-template-columns:1fr}
  .field.full{grid-column:auto}
  .trust-grid{grid-template-columns:1fr 1fr}
  h1{font-size:2.5rem}
  .calculator{padding:17px}
  .section{padding:52px 0}
  .footer-grid{display:block}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}

/* Search-intent content added from live Search Console query patterns */
.query-section{padding-top:56px}
.query-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.query-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:0 10px 30px rgba(27,41,81,.06)}
.query-card h3{font-size:1.08rem;margin-bottom:8px}
.query-card p{color:var(--muted);font-size:.92rem;margin:0 0 12px}
.query-card a{font-weight:750;font-size:.9rem}
.formula-list{margin:0;padding-left:20px;color:#4e5a70}
.formula-list li{margin:8px 0}
.steps{padding-left:22px}
.steps li{margin:12px 0;color:#4e5a70}
@media(max-width:900px){.query-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.query-grid{grid-template-columns:1fr}.query-section{padding-top:44px}}