/* MileageRates.com — "Road Ledger" design system
   Palette: ink #20262E · paper #F6F7F4 · route blue #14507F · marker green #0E6B47 · notice amber #9A5B00
   Type: system stack (zero font requests — speed is the brand), tabular numerals for all figures. */

:root{
  --ink:#20262E;
  --muted:#5B6470;
  --paper:#F6F7F4;
  --card:#FFFFFF;
  --rule:#D9DDD4;
  --route:#14507F;
  --route-dark:#0E3D63;
  --marker:#0E6B47;
  --marker-bg:#EAF3EE;
  --amber:#9A5B00;
  --amber-bg:#FBF3E4;
  --plate-border:#20262E;
  --max:62rem;
  --radius:6px;
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:1.0625rem;
  line-height:1.65;
}

img,svg{max-width:100%;height:auto}

a{color:var(--route);text-underline-offset:2px}
a:hover{color:var(--route-dark)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:3px solid var(--route);
  outline-offset:2px;
  border-radius:2px;
}

.skip{
  position:absolute;left:-9999px;top:0;
  background:var(--ink);color:#fff;padding:.6rem 1rem;z-index:100;
}
.skip:focus{left:0}

/* ---------- Header ---------- */
.site-head{
  background:var(--card);
  border-bottom:1px solid var(--rule);
}
.site-head .wrap{
  max-width:var(--max);margin:0 auto;padding:.85rem 1.25rem;
  display:flex;flex-wrap:wrap;align-items:center;gap:.75rem 1.5rem;
}
.brand{
  font-weight:800;font-size:1.15rem;letter-spacing:-.02em;
  color:var(--ink);text-decoration:none;display:inline-flex;align-items:center;gap:.5rem;
}
.brand:hover{color:var(--ink)}
.brand .plate-mark{
  display:inline-block;width:1.45rem;height:1.45rem;flex:none;
}
.site-nav{margin-left:auto}
.site-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.25rem .35rem}
.site-nav a{
  display:block;padding:.35rem .65rem;border-radius:var(--radius);
  text-decoration:none;font-size:.92rem;font-weight:600;color:var(--ink);
}
.site-nav a:hover{background:var(--paper)}
.site-nav a[aria-current="page"]{background:var(--ink);color:#fff}

/* ---------- Layout ---------- */
main{max-width:var(--max);margin:0 auto;padding:0 1.25rem 3rem}
.content-narrow{max-width:46rem}

h1{font-size:clamp(1.7rem,4.5vw,2.5rem);line-height:1.15;letter-spacing:-.025em;font-weight:800;margin:1.6rem 0 .5rem}
h2{font-size:1.45rem;letter-spacing:-.015em;font-weight:750;margin:2.4rem 0 .6rem}
h3{font-size:1.12rem;font-weight:700;margin:1.6rem 0 .4rem}
p{margin:.7rem 0}
.lede{font-size:1.15rem;color:var(--muted);max-width:44rem}
.kicker{
  text-transform:uppercase;letter-spacing:.09em;font-size:.78rem;font-weight:700;
  color:var(--muted);margin:1.8rem 0 0;
}
.byline{font-size:.88rem;color:var(--muted);margin:.2rem 0 1rem}
.byline strong{color:var(--ink)}

/* Dashed road-centerline divider — the site's recurring motif */
.centerline{
  border:0;height:4px;margin:2.6rem 0;
  background:repeating-linear-gradient(90deg,var(--amber) 0 28px,transparent 28px 48px);
  opacity:.55;border-radius:2px;
}

/* ---------- Rate plate (signature element) ---------- */
.plate{
  background:var(--card);
  border:3px solid var(--plate-border);
  border-radius:10px;
  padding:1.1rem 1.25rem 1rem;
  box-shadow:4px 4px 0 rgba(32,38,46,.12);
}
.plate .plate-label{
  font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;
  color:var(--muted);display:flex;justify-content:space-between;gap:.5rem;
}
.plate .plate-figure{
  font-variant-numeric:tabular-nums;
  font-weight:800;font-size:clamp(2.3rem,6vw,3.1rem);line-height:1.05;
  letter-spacing:-.02em;color:var(--marker);margin:.15rem 0 .1rem;
}
.plate .plate-figure small{font-size:45%;font-weight:700;color:var(--ink);letter-spacing:0}
.plate .plate-sub{font-size:.9rem;color:var(--muted);margin:0}
.plate .plate-sub strong{color:var(--ink)}
.plate-grid{
  display:grid;gap:1rem;margin:1.6rem 0 .4rem;
  grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));
}
a.plate{display:block;text-decoration:none;color:inherit;transition:transform .12s ease}
a.plate:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(32,38,46,.16)}
.plate-hero{max-width:30rem;margin:1.4rem 0}

/* ---------- Notices ---------- */
.notice{
  background:var(--amber-bg);border-left:4px solid var(--amber);
  padding:.8rem 1rem;border-radius:0 var(--radius) var(--radius) 0;
  font-size:.95rem;margin:1.2rem 0;
}
.notice strong{color:var(--amber)}
.verified{
  display:inline-block;background:var(--marker-bg);color:var(--marker);
  font-size:.8rem;font-weight:700;padding:.2rem .6rem;border-radius:999px;
  text-transform:uppercase;letter-spacing:.05em;
}

/* ---------- Tables ---------- */
.table-scroll{overflow-x:auto;margin:1rem 0}
table{
  border-collapse:collapse;width:100%;background:var(--card);
  font-size:.95rem;border:1px solid var(--rule);
}
caption{
  text-align:left;font-weight:700;padding:.6rem .8rem;font-size:1rem;
  background:var(--card);border:1px solid var(--rule);border-bottom:0;
}
th,td{padding:.6rem .8rem;text-align:left;border-bottom:1px solid var(--rule);vertical-align:top}
thead th{
  background:var(--ink);color:#fff;font-size:.82rem;text-transform:uppercase;
  letter-spacing:.05em;border-bottom:0;
}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;font-weight:600}
tbody tr:last-child td{border-bottom:0}
tr.current td{background:var(--marker-bg)}
tr.current td:first-child::after{
  content:"current";display:inline-block;margin-left:.5rem;
  font-size:.68rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;
  color:var(--marker);
}

/* ---------- Calculator ---------- */
.calc{
  background:var(--card);border:1px solid var(--rule);border-radius:10px;
  padding:1.4rem;margin:1.4rem 0;
}
.calc h2,.calc h3{margin-top:0}
.calc-row{display:flex;flex-wrap:wrap;gap:1rem;margin:.9rem 0}
.field{flex:1 1 11rem;min-width:0}
.field label{display:block;font-size:.85rem;font-weight:700;margin-bottom:.3rem}
.field input,.field select{
  width:100%;padding:.6rem .7rem;font-size:1.05rem;font-variant-numeric:tabular-nums;
  border:2px solid var(--ink);border-radius:var(--radius);background:#fff;color:var(--ink);
  font-family:inherit;
}
.calc button{
  background:var(--route);color:#fff;border:0;border-radius:var(--radius);
  padding:.7rem 1.4rem;font-size:1rem;font-weight:700;cursor:pointer;font-family:inherit;
}
.calc button:hover{background:var(--route-dark)}
.calc-result{
  margin-top:1.1rem;padding:1rem 1.1rem;border-radius:var(--radius);
  background:var(--marker-bg);border:1px solid var(--marker);display:none;
}
.calc-result.show{display:block}
.calc-result .total{
  font-size:1.9rem;font-weight:800;color:var(--marker);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.calc-result .breakdown{font-size:.9rem;color:var(--ink);margin:.4rem 0 0}
.calc-note{font-size:.85rem;color:var(--muted);margin-top:.8rem}

/* ---------- FAQ ---------- */
.faq details{
  background:var(--card);border:1px solid var(--rule);border-radius:var(--radius);
  padding:0;margin:.6rem 0;
}
.faq summary{
  cursor:pointer;font-weight:700;padding:.85rem 1rem;list-style:none;position:relative;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:1rem;top:50%;transform:translateY(-50%);
  font-weight:800;color:var(--route);font-size:1.2rem;
}
.faq details[open] summary::after{content:"–"}
.faq .faq-body{padding:0 1rem .9rem}

/* ---------- Sources / footer ---------- */
.sources{
  background:var(--card);border:1px solid var(--rule);border-radius:var(--radius);
  padding:1rem 1.2rem;font-size:.92rem;margin:1.6rem 0;
}
.sources h2,.sources h3{margin-top:0;font-size:1rem;text-transform:uppercase;letter-spacing:.06em}
.sources ul{margin:.4rem 0 0;padding-left:1.2rem}
.sources li{margin:.35rem 0}

.disclaimer{font-size:.85rem;color:var(--muted)}

.site-foot{
  border-top:1px solid var(--rule);background:var(--card);margin-top:3rem;
}
.site-foot .wrap{
  max-width:var(--max);margin:0 auto;padding:1.6rem 1.25rem;
  font-size:.88rem;color:var(--muted);
}
.site-foot nav ul{list-style:none;margin:.5rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:.3rem 1.1rem}
.site-foot a{color:var(--route)}

/* ---------- Utility ---------- */
.grid-2{display:grid;gap:1.2rem;grid-template-columns:repeat(auto-fit,minmax(17rem,1fr))}
.tag-row{display:flex;flex-wrap:wrap;gap:.4rem;margin:.8rem 0}
.tag-row a{
  font-size:.85rem;font-weight:600;text-decoration:none;color:var(--ink);
  border:1px solid var(--rule);background:var(--card);border-radius:999px;padding:.3rem .8rem;
}
.tag-row a:hover{border-color:var(--route);color:var(--route)}
.breadcrumb{font-size:.85rem;color:var(--muted);margin:1.2rem 0 0}
.breadcrumb ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.35rem}
.breadcrumb li+li::before{content:"›";margin-right:.35rem;color:var(--rule)}
.breadcrumb a{color:var(--muted)}

@media (max-width:40rem){
  .site-nav{margin-left:0;width:100%}
  body{font-size:1rem}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

@media print{
  .site-head,.site-foot,.calc button,.tag-row{display:none}
  body{background:#fff}
  .plate{box-shadow:none}
}