/* calculatesteps.com — pedestrian wayfinding system
   Palette derived from trail waymarking and distance-post signage. */

:root{
  --ink:#16181C;
  --ink-2:#3A4048;
  --muted:#666C63;
  --ground:#ECEDE8;
  --panel:#FFFFFF;
  --line:#D6D8D0;
  --blaze:#14654B;
  --blaze-dk:#0D4B37;
  --mark:#F0B429;
  --mark-dk:#B47F0C;
  --focus:#1D4E89;

  --f-display:"Archivo",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --f-body:"Literata",Georgia,"Times New Roman",serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"SF Mono",Menlo,monospace;

  --w:min(100% - 2.5rem, 68rem);
  --w-read:min(100% - 2.5rem, 40rem);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ground);color:var(--ink);
  font-family:var(--f-body);font-size:1.0625rem;line-height:1.72;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--blaze-dk);text-underline-offset:.18em;text-decoration-thickness:.08em}
a:hover{color:var(--ink)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:2px}

h1,h2,h3,h4{font-family:var(--f-display);font-weight:700;line-height:1.12;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2rem,6vw,3.25rem)}
h2{font-size:clamp(1.375rem,3.4vw,1.875rem);margin-top:2.25em}
h3{font-size:1.1875rem;margin-top:1.9em;letter-spacing:-.01em}
p{margin:0 0 1.15em}
ul,ol{margin:0 0 1.15em;padding-left:1.25em}
li{margin-bottom:.45em}
strong{font-weight:600}

.wrap{width:var(--w);margin-inline:auto}
.read{width:var(--w-read);margin-inline:auto}
.skip{position:absolute;left:-9999px}
.skip:focus{left:1rem;top:1rem;z-index:99;background:var(--panel);padding:.6rem 1rem;border:2px solid var(--ink)}

/* ---------- wayfinding bar ---------- */
.topbar{background:var(--ink);color:#fff;border-bottom:4px solid var(--mark)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;
  min-height:60px;padding-block:.55rem;flex-wrap:wrap}
.brand{font-family:var(--f-display);font-weight:700;font-size:1.0625rem;letter-spacing:-.03em;
  color:#fff;text-decoration:none;white-space:nowrap}
.brand em{font-style:normal;color:var(--mark)}
.navlinks{display:flex;gap:1.1rem;flex-wrap:wrap;font-family:var(--f-display);
  font-size:.8125rem;font-weight:500;letter-spacing:.02em}
.navlinks a{color:#D9DBD4;text-decoration:none}
.navlinks a:hover,.navlinks a[aria-current="page"]{color:var(--mark)}

/* ---------- eyebrow / labels ---------- */
.eyebrow{font-family:var(--f-display);font-size:.6875rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--blaze);margin:0 0 .9rem}
.eyebrow.amber{color:var(--mark-dk)}

/* ---------- hero ---------- */
.hero{background:var(--panel);border-bottom:1px solid var(--line);padding:2.75rem 0 2.25rem}
.hero h1{margin-bottom:.35em;max-width:18ch}
.hero .lede{font-size:1.125rem;color:var(--ink-2);max-width:56ch;margin-bottom:0}
.hero-split{display:grid;gap:1rem}
@media(min-width:60rem){
  .hero-split{grid-template-columns:1.1fr .9fr;gap:3rem;align-items:end}
  .hero-split h1{margin-bottom:0}
  .hero-split .lede{padding-bottom:.6rem;border-bottom:2px solid var(--mark)}
}
/* left-aligned reading column, for pages that sit beside full-width blocks */
.read.left{margin-inline:0}

/* ---------- calculator ---------- */
.calc{background:var(--panel);border:1px solid var(--line);border-top:4px solid var(--ink);
  padding:1.5rem;margin:-1px 0 0}
.calc-grid{display:grid;gap:.85rem}
@media(min-width:46rem){.calc-grid{grid-template-columns:1fr 1fr}}
.field label{display:block;font-family:var(--f-display);font-size:.6875rem;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:.4rem}
.field input,.field select{width:100%;font-family:var(--f-body);font-size:1.0625rem;
  padding:.75rem .85rem;border:1.5px solid var(--line);border-radius:0;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus{border-color:var(--ink)}
.calc-row{display:flex;gap:.85rem;align-items:flex-end;flex-wrap:wrap;margin-top:.85rem}
.calc-row .field{flex:1 1 12rem}
button.go{font-family:var(--f-display);font-weight:700;font-size:.9375rem;letter-spacing:.02em;
  background:var(--blaze);color:#fff;border:0;padding:.85rem 1.6rem;cursor:pointer;
  min-height:48px;flex:0 0 auto}
button.go:hover{background:var(--blaze-dk)}
button.go[disabled]{background:var(--muted);cursor:progress}
.status{font-size:.9375rem;color:var(--muted);margin:.9rem 0 0;min-height:1.4em}
.status.err{color:#8C2B15}

/* ---------- result + the signature distance rule ---------- */
.result{display:none;margin-top:1.5rem;border-top:1px solid var(--line);padding-top:1.5rem}
.result.on{display:block}
.bignum{font-family:var(--f-mono);font-weight:600;font-size:clamp(2.5rem,11vw,4.5rem);
  line-height:1;letter-spacing:-.04em;color:var(--ink);margin:0}
.bignum-label{font-family:var(--f-display);font-size:.75rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);margin:.5rem 0 0}

.rule{margin:1.75rem 0 1.25rem}
.rule-track{position:relative;height:44px;border-left:2px solid var(--ink);border-right:2px solid var(--ink);
  border-bottom:2px solid var(--ink);background:repeating-linear-gradient(
    to right,var(--mark) 0 2px,transparent 2px 10%)}
.rule-fill{position:absolute;inset:0 auto 0 0;background:var(--blaze);opacity:.14}
.rule-cap{display:flex;justify-content:space-between;font-family:var(--f-mono);font-size:.6875rem;
  color:var(--muted);margin-top:.4rem;letter-spacing:.02em}
.rule-note{font-family:var(--f-display);font-size:.6875rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);margin:0 0 .5rem}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(8.5rem,1fr));
  border:1px solid var(--line);margin:1.25rem 0}
.stat{padding:.9rem 1rem;border-right:1px solid var(--line);background:var(--panel)}
.stat:last-child{border-right:0}
.stat b{display:block;font-family:var(--f-mono);font-size:1.375rem;font-weight:600;letter-spacing:-.02em}
.stat span{display:block;font-family:var(--f-display);font-size:.6875rem;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-top:.2rem}

.share{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:1.1rem}
.share button,.share a{font-family:var(--f-display);font-size:.8125rem;font-weight:600;
  background:transparent;border:1.5px solid var(--line);color:var(--ink-2);padding:.55rem 1rem;
  cursor:pointer;text-decoration:none;min-height:44px;display:inline-flex;align-items:center}
.share button:hover,.share a:hover{border-color:var(--ink);color:var(--ink)}

/* ---------- sections ---------- */
.section{padding:3rem 0}
.section.panel{background:var(--panel);border-block:1px solid var(--line)}
.section > .wrap > h2:first-of-type,.section > .read > h2:first-of-type{margin-top:0}

/* ---------- card index ---------- */
.cards{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);
  grid-template-columns:repeat(auto-fill,minmax(15.5rem,1fr))}
.card{background:var(--panel);padding:1.15rem 1.2rem;text-decoration:none;color:inherit;display:block}
.card:hover{background:#F7F8F4}
.card .kicker{font-family:var(--f-display);font-size:.625rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--blaze);margin-bottom:.45rem;display:block}
.card .kicker.amber{color:var(--mark-dk)}
.card h3{font-size:1.0625rem;margin:0 0 .35rem;line-height:1.25}
.card p{font-size:.875rem;color:var(--muted);margin:0;line-height:1.55}
.card .fig{font-family:var(--f-mono);font-size:.8125rem;color:var(--ink-2);margin-top:.5rem;display:block}

/* ---------- article body ---------- */
.byline{font-family:var(--f-display);font-size:.8125rem;color:var(--muted);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:.7rem 0;margin:0 0 2rem;display:flex;gap:1rem;flex-wrap:wrap}
.byline b{color:var(--ink-2);font-weight:600}
.prose{font-size:1.0625rem}
.prose h2{font-size:clamp(1.3rem,3vw,1.625rem)}
table{width:100%;border-collapse:collapse;margin:1.6rem 0;font-size:.9375rem;background:var(--panel)}
th,td{text-align:left;padding:.65rem .8rem;border:1px solid var(--line);vertical-align:top}
th{font-family:var(--f-display);font-size:.75rem;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;background:#F5F6F2}
td:first-child{font-family:var(--f-mono);white-space:nowrap}
blockquote{margin:1.6rem 0;padding:.2rem 0 .2rem 1.25rem;border-left:4px solid var(--mark);
  color:var(--ink-2);font-size:1.0625rem}
.callout{background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--blaze);
  padding:1.1rem 1.25rem;margin:1.75rem 0;font-size:.9688rem}
.callout p:last-child{margin-bottom:0}
.callout h3{margin:0 0 .5rem;font-size:1rem}
.sources{font-size:.875rem;color:var(--muted)}
.sources li{margin-bottom:.55em}

/* ---------- route stat header ---------- */
.routehead{background:var(--panel);border:1px solid var(--line);border-top:4px solid var(--mark);
  padding:1.5rem;margin-bottom:2rem}

/* ---------- faq ---------- */
details{background:var(--panel);border:1px solid var(--line);margin-bottom:-1px;padding:0}
details summary{cursor:pointer;padding:1rem 1.15rem;font-family:var(--f-display);font-weight:600;
  font-size:1rem;list-style:none}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";float:right;font-family:var(--f-mono);color:var(--blaze)}
details[open] summary::after{content:"–"}
details .body{padding:0 1.15rem 1.1rem;font-size:.9688rem}
details .body p:last-child{margin-bottom:0}

/* ---------- ads ---------- */
.adslot{margin:2.5rem auto;max-width:46rem;text-align:center}
.adslot .lbl{font-family:var(--f-display);font-size:.625rem;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:#9AA096;margin-bottom:.4rem}

/* ---------- footer ---------- */
.foot{background:var(--ink);color:#B9BEB4;padding:2.5rem 0 2rem;font-size:.9375rem;margin-top:0}
.foot a{color:#E6E8E0;text-decoration:none}
.foot a:hover{color:var(--mark)}
.foot-grid{display:grid;gap:1.75rem;grid-template-columns:repeat(auto-fit,minmax(12rem,1fr))}
.foot h4{font-family:var(--f-display);font-size:.6875rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--mark);margin:0 0 .7rem}
.foot ul{list-style:none;padding:0;margin:0;font-size:.875rem}
.foot li{margin-bottom:.4em}
.foot .fine{border-top:1px solid #2C3138;margin-top:2rem;padding-top:1.25rem;
  font-size:.8125rem;color:#868C81;display:flex;gap:1rem;flex-wrap:wrap;justify-content:space-between}

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