:root{
  --navy:#0D0D2B; --purple:#2E2E6E; --blue:#4A5FC1; --pale:#B8D8F8;
  --paper:#FBFBF7; --rule:#D8D8E4; --ink:#1A1A2E; --muted:#5B5B73;
  --ok:#2F6F4E; --warn:#8A5A00; --warn-bg:#FFF7E7; --stop:#A02020;
  --serif:"Spectral",Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans",system-ui,-apple-system,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
     font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-underline-offset:3px}
a:hover{color:var(--purple)}

.site-header{border-bottom:2px solid var(--navy);background:var(--paper)}
.header-inner{max-width:1080px;margin:0 auto;padding:18px 24px;display:flex;
              align-items:center;justify-content:space-between;gap:20px}
.brand{display:inline-flex;align-items:center}
.brand img{height:34px;width:auto;display:block}
.top-link{font-family:var(--sans);font-size:13px;font-weight:600;color:var(--navy);text-decoration:none}
.top-link:hover{color:var(--blue)}

.wrap,.page-shell{max-width:1080px;margin:0 auto;padding:0 24px 72px}
.page-shell{padding-top:34px}

.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.14em;
         text-transform:uppercase;color:var(--blue);margin:0 0 10px}
h1{font-family:var(--serif);font-weight:600;font-size:clamp(28px,4.4vw,42px);
   line-height:1.12;margin:0 0 8px;letter-spacing:-.01em;color:var(--navy)}
h2{font-family:var(--serif);font-weight:600;font-size:22px;color:var(--navy);margin:0 0 12px}
h3{font-family:var(--sans);font-size:14px;font-weight:600;margin:22px 0 6px;color:var(--navy)}
.lede,.standfirst{font-family:var(--serif);font-size:17px;color:var(--muted);max-width:64ch;margin:0 0 4px}

.formatter-card{margin-top:30px;overflow:hidden;border:1px solid var(--rule);border-radius:2px;background:#fff}
.formatter-head{display:flex;align-items:center;justify-content:space-between;gap:18px;
                 padding:16px 22px;color:#fff;background:var(--navy)}
.formatter-head p{margin:0;font-size:13px;color:rgba(255,255,255,.78)}
.live-badge{flex:none;padding:4px 10px;border-radius:2px;background:rgba(255,255,255,.14);
            font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.09em;text-transform:uppercase}

.formatter-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr)}
.input-panel,.output-panel{padding:26px}
.output-panel{border-left:1px solid var(--rule);background:#FAFAFC}
.panel-label{margin:0 0 16px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;
             text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--rule);padding-bottom:7px}

.segmented{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--rule);padding:3px;
           border-radius:6px;background:#fff;margin-bottom:18px}
.segmented label{margin:0;position:relative}
.segmented input{position:absolute;opacity:0;pointer-events:none}
.segmented span{display:block;text-align:center;padding:8px 8px;border-radius:4px;font-size:12.5px;
                 font-weight:700;color:var(--muted);cursor:pointer}
.segmented input:checked+span{background:var(--navy);color:#fff}

.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.field{min-width:0}
.field.full{grid-column:1/-1}
.field label,.check-row label{display:block;margin-bottom:5px;font-size:13px;font-weight:500;color:var(--ink)}
.field-note{display:block;margin-top:5px;font-size:12px;line-height:1.4;color:var(--muted)}
.field-warning{min-height:1em;margin-top:4px;font-size:12px;font-weight:500;color:var(--stop)}

input,select{width:100%;min-height:40px;padding:8px 10px;border:1px solid var(--rule);
             border-radius:2px;background:#fff;color:var(--ink);font:inherit;font-family:var(--mono);font-size:14px}
select{font-family:var(--sans)}
input:focus,select:focus,button:focus-visible,a:focus-visible{
  outline:2px solid var(--blue);outline-offset:2px;border-color:var(--blue)}
input[aria-invalid="true"]{border-color:var(--stop)}
.conditional[hidden]{display:none}

.result-hero{padding:26px 24px;border:1px solid var(--rule);border-radius:2px;background:#fff;
             box-shadow:inset 3px 0 0 var(--pale);text-align:center}
.result-label{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.1em;
              text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.result-value{display:block;font-family:var(--serif);font-size:clamp(38px,6vw,54px);font-weight:600;
              color:var(--navy);line-height:1}
.result-detail{margin-top:14px;font-size:13px;color:var(--muted);line-height:1.55}
.result-detail strong{color:var(--ink)}

.copy-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
button{min-height:38px;padding:8px 14px;border:1px solid var(--navy);border-radius:2px;
       color:var(--navy);background:#fff;font:600 13px/1 var(--sans);cursor:pointer}
button:hover{background:var(--purple);border-color:var(--purple);color:#fff}
button.primary{background:var(--navy);color:#fff}
button.primary:hover{background:var(--purple);border-color:var(--purple)}
.copy-status{min-height:20px;margin:8px 0 0;font-family:var(--mono);font-size:12px;font-weight:600;color:var(--ok)}

.warnings{margin-top:14px}
.warning{margin:8px 0 0;padding:10px 12px;border-left:3px solid #E8A23D;border-radius:2px;
         color:var(--warn);background:var(--warn-bg);font-size:12.5px;line-height:1.5}
.tool-cta{margin-top:12px;padding-top:12px;border-top:1px dashed var(--rule);font-size:13px;
          color:var(--muted);max-width:62ch}
.tool-cta a{color:var(--blue);font-weight:600}
.tool-cta a:hover{color:var(--purple)}

.privacy-note{margin:16px 0 0;font-size:12.5px;color:var(--muted)}
.privacy-note::before{content:"";display:inline-block;width:6px;height:6px;margin-right:7px;
                       border-radius:50%;background:var(--ok)}

.content-section{max-width:66ch;margin:48px auto 0;padding-top:28px;border-top:1px solid var(--rule)}
.content-section p{font-size:14.5px;color:#33334A;line-height:1.65}
.worked-example{margin:22px 0;padding:20px 22px;border-radius:2px;border-left:3px solid var(--blue);background:#F1F7FE}
.worked-example h3{margin-top:0}
.worked-example p:last-child{margin-bottom:0}
.finished-sentence{font-family:var(--serif);font-size:16px;color:var(--ink)!important}

.sibling-nav{margin-top:40px;max-width:66ch}
.sibling-links{display:flex;flex-wrap:wrap;gap:8px}
.sibling-links a{padding:6px 12px;border:1px solid var(--rule);border-radius:999px;background:#fff;
                  font-family:var(--sans);font-size:12.5px;font-weight:600;text-decoration:none;color:var(--ink)}
.sibling-links a:hover{border-color:var(--blue);color:var(--blue)}
.sibling-links a[aria-current="page"]{border-color:var(--navy);color:#fff;background:var(--navy)}

.site-footer{margin-top:44px;border-top:1px solid var(--rule)}
.footer-inner{max-width:1080px;margin:0 auto;padding:20px 24px;display:flex;justify-content:space-between;
              flex-wrap:wrap;gap:14px;font-size:12.5px;color:var(--muted)}

.hub-hero{padding:6px 0 8px}
.hub-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px}
.hub-card{position:relative;min-height:172px;padding:20px;border:1px solid var(--rule);border-radius:2px;
          background:#fff;color:inherit;text-decoration:none;transition:border-color .12s,transform .12s}
.hub-card:hover{border-color:var(--blue);transform:translateY(-2px)}
.hub-card h3{font-family:var(--serif);font-size:19px;margin:0 0 6px}
.hub-card p{margin:0;font-size:13px;color:var(--muted);line-height:1.5}
.hub-card .card-link{display:inline-block;margin-top:13px;font-family:var(--mono);font-size:11.5px;
                      font-weight:600;color:var(--blue);letter-spacing:.02em}
.hub-card[data-featured]{border-color:var(--blue);background:#F8FAFF}

@media(max-width:860px){
  .formatter-grid{grid-template-columns:1fr}
  .output-panel{border-left:0;border-top:1px solid var(--rule)}
  .hub-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:580px){
  .fields{grid-template-columns:1fr}
  .field.full{grid-column:auto}
  .hub-grid{grid-template-columns:1fr}
  .formatter-head{align-items:start}
  .footer-inner{flex-direction:column}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
@media print{
  .site-header,.copy-actions,.site-footer,.top-link{display:none}
  body{background:#fff}
}