/* Bike Speed Calculator — Maryland design system.
   Ink navy / Maryland red / gold / result green on white; Inter throughout.
   No dark console: the calculator is a two-column shell — form card left,
   sticky results card right — exactly as the Maryland build presents it. */
@font-face{font-family:'Inter';src:url('/assets/fonts/inter.woff2') format('woff2');font-weight:400 700;font-display:swap}

:root{
  --ink:#14213D; --ink-soft:#4A5568; --bg:#FFFFFF; --surface:#F6F7FB;
  --line:#E3E6EE; --field-line:#B9C0CF; --brand:#B8202E; --brand-dark:#9C1B27;
  --accent:#D4A017; --good:#1F7A4D; --cream:#FDF3E3;
  --radius-card:12px; --radius-input:8px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3{font-weight:700;line-height:1.25;color:var(--ink)}
h1{font-size:2rem;margin:0 0 .5rem}
h2{font-size:1.45rem;margin:2.4rem 0 .7rem}
h3{font-size:1.12rem;margin:1.6rem 0 .5rem}
p{margin:0 0 1rem}
a{color:var(--brand)}
a:hover{text-decoration-thickness:2px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.wrap{max-width:1180px;margin:0 auto;padding:0 1rem}
.article{max-width:760px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:99}
.skip:focus{left:0}
::selection{background:var(--accent);color:var(--ink)}

/* ---------- header ---------- */
header.site{background:var(--bg);border-bottom:3px solid var(--brand);position:relative;z-index:40}
header.site .bar{display:flex;align-items:center;gap:1rem;padding:.7rem 0;position:relative}
.logo{display:inline-flex;align-items:center;gap:.55rem;color:var(--ink);text-decoration:none;font-weight:700;font-size:1.12rem;flex:none}
.logo:hover{text-decoration:none}
.logo .logo-sub{display:block;font-size:.72rem;font-weight:600;color:var(--ink-soft);letter-spacing:.04em;text-transform:uppercase}
nav.mainnav{margin-left:auto;display:flex;align-items:center;gap:.35rem}
nav.mainnav>a,nav.mainnav .dropbtn{display:inline-flex;align-items:center;min-height:44px;padding:.4rem .65rem;color:var(--ink);text-decoration:none;font-weight:600;font-size:.98rem;background:none;border:0;font-family:inherit;cursor:pointer;border-radius:8px}
nav.mainnav>a:hover,nav.mainnav .dropbtn:hover{color:var(--brand);text-decoration:underline}
nav.mainnav>a.pill{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.dropwrap{position:relative}
.dropdown{position:absolute;top:calc(100% + 6px);left:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:0 14px 34px rgba(20,33,61,.14);padding:.45rem;min-width:270px;display:none;z-index:60}
.dropwrap.open .dropdown{display:block}
.dropdown a{display:block;padding:.55rem .7rem;border-radius:8px;color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem}
.dropdown a:hover{background:var(--surface);color:var(--brand);text-decoration:none}
.dropdown a.cur{color:var(--brand)}
.burger{display:none;margin-left:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-input);min-width:44px;min-height:44px;font-size:1.2rem;cursor:pointer;color:var(--ink);align-items:center;justify-content:center}
.mmenu{border-top:1px solid var(--line);background:#fff;padding:.6rem 1rem 1rem}
.mmenu a{display:flex;align-items:center;min-height:44px;padding:.45rem .4rem;color:var(--ink);text-decoration:none;font-weight:600;border-bottom:1px solid var(--line)}
.mmenu a.pill{color:var(--brand)}
.mmenu .subbtn{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:44px;padding:.45rem .4rem;background:none;border:0;border-bottom:1px solid var(--line);font:inherit;font-weight:600;color:var(--ink);cursor:pointer}
.mmenu .sublist{display:none;padding-left:1rem}
.mmenu .sublist.open{display:block}

/* ---------- hub strip (homepage) ---------- */
.hub-strip{background:var(--surface);border-bottom:1px solid var(--line)}
.hub-strip .wrap{display:flex;gap:.6rem;align-items:center;padding-top:.55rem;padding-bottom:.55rem;overflow-x:auto}
.hub-strip .hub-title{font-weight:700;font-size:.9rem;white-space:nowrap}
.hub-strip a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:.3rem .8rem;color:var(--ink);text-decoration:none;font-size:.9rem;white-space:nowrap}
.hub-strip a:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- hero / page hero ---------- */
.hero{padding:1.6rem 0 .4rem}
.pagehero{padding:1.6rem 0 .4rem}
.subhead,.lede{font-size:1.12rem;color:var(--ink-soft);max-width:760px}
.kicker{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);margin-bottom:.4rem}
.trust-row{display:flex;flex-wrap:wrap;gap:.5rem 1.2rem;list-style:none;margin:.9rem 0 1.4rem;padding:0;font-size:.92rem;font-weight:600}
.trust-row li{display:inline-flex;align-items:center;gap:.4rem}
.trust-row svg{flex:none}
.byline{font-size:.92rem;color:var(--ink-soft);margin-top:1.6rem}
.byline a{font-weight:600}

/* ---------- calculator shell ---------- */
.calc-shell{display:grid;gap:1.2rem;margin:0 0 1.6rem}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:1.1rem}
.calc-card{box-shadow:0 10px 30px rgba(20,33,61,.10)}
.card h2{margin-top:0;font-size:1.15rem}
fieldset{border:0;margin:0 0 1.1rem;padding:0;min-width:0}
legend,.group-label{font-weight:700;font-size:1rem;margin-bottom:.6rem;padding:0}
label{display:block;font-weight:600;font-size:.94rem;margin-bottom:.3rem}
input[type="number"],input[type="text"],select{width:100%;min-height:44px;padding:.55rem .7rem;border:1px solid var(--field-line);border-radius:var(--radius-input);font:inherit;font-size:1rem;color:var(--ink);background:#fff}
.field{margin-bottom:.9rem}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:.8rem}
.field-unit{display:grid;grid-template-columns:1fr 108px;gap:.5rem}
.field-unit select{padding:.55rem .4rem}
.hint{font-size:.85rem;color:var(--ink-soft);margin:.3rem 0 0}
.segmented{display:flex;border:1px solid var(--field-line);border-radius:var(--radius-input);overflow:hidden;margin-bottom:.9rem}
.segmented button{flex:1;min-height:44px;border:0;background:var(--surface);font:inherit;font-weight:600;cursor:pointer;color:var(--ink-soft);padding:.3rem .2rem}
.segmented button.on,.segmented button[aria-pressed="true"]{background:var(--ink);color:#fff}
details.advanced{border:1px solid var(--line);border-radius:var(--radius-card);padding:.7rem .9rem;margin-bottom:1rem;background:var(--surface)}
details.advanced summary{font-weight:700;cursor:pointer;min-height:32px}
details.advanced .adv-body{margin-top:.8rem}
.calc-actions{display:flex;gap:.8rem;align-items:center;flex-wrap:wrap;margin-top:.4rem}
.btn{min-height:44px;padding:.6rem 1.3rem;border:0;cursor:pointer;border-radius:var(--radius-input);background:var(--brand);color:#fff;font:inherit;font-weight:700}
.btn:hover{background:var(--brand-dark)}
.btn.ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn.copied{background:var(--good)}
.link-btn{background:none;border:0;color:var(--brand);font:inherit;font-weight:600;cursor:pointer;text-decoration:underline;padding:.4rem;min-height:44px}
.calc-msg{background:#FDECEA;border:1px solid #E5B4AE;color:#7A1F16;border-radius:var(--radius-input);padding:.7rem .9rem;font-size:.95rem;margin:0 0 1rem}
.results-card .msg-note{font-size:.9rem;color:var(--ink-soft)}

/* results */
.take-home-big{font-size:2.2rem;font-weight:700;color:var(--good);line-height:1.15;margin:0}
.take-home-sub{color:var(--ink-soft);margin:.2rem 0 1rem}
table{border-collapse:collapse;width:100%;margin:0 0 1.2rem;font-size:.97rem}
caption{text-align:left;font-weight:700;padding-bottom:.45rem}
th,td{padding:.5rem .6rem;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th.num,td.num{text-align:right;font-variant-numeric:tabular-nums}
thead th{border-bottom:2px solid var(--ink)}
tbody th{font-weight:600}
tr.total-row th,tr.total-row td{border-top:2px solid var(--ink);border-bottom:0;font-weight:700}
.table-scroll{overflow-x:auto}
tr.row-highlight{background:var(--cream)}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.7rem;margin-bottom:1rem}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:.7rem .8rem}
.stat .stat-label{font-size:.82rem;font-weight:600;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.03em;display:block}
.stat .stat-value{font-size:1.25rem;font-weight:700}
.result-note{font-size:.9rem;color:var(--ink-soft)}
.erg-out{font-size:1.6rem;font-weight:700;color:var(--good);line-height:1.2;margin:0 0 .2rem}

/* sticky mobile result bar */
.stickybar{display:none}
@media (max-width:959px){
  .stickybar{display:flex;align-items:center;justify-content:space-between;gap:14px;position:fixed;left:0;right:0;bottom:0;z-index:58;background:var(--ink);color:#D8DEEA;padding:12px 18px calc(12px + env(safe-area-inset-bottom));box-shadow:0 -8px 24px rgba(20,33,61,.30);border-top:3px solid var(--brand)}
  .stickybar[hidden]{display:none}
  .stickybar .sb-label{font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:#9FB0CC}
  .stickybar .sb-val{font-weight:700;font-size:16.5px;color:#fff;text-align:right}
  body{padding-bottom:0}
}

/* ---------- content ---------- */
section.block{padding:.4rem 0 0}
.prose{max-width:760px}
.prose ul,.prose ol{margin:0 0 1rem;padding-left:1.4rem}
.prose li{margin-bottom:.35rem}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:1rem 1.2rem;margin:1.4rem 0;max-width:760px}
.toc .toch{font-weight:700;font-size:1.05rem;margin-bottom:.4rem}
.toc ul{list-style:none;margin:0;padding:0}
.toc li{margin-bottom:.25rem}
.formula-line{background:var(--ink);color:#fff;border-radius:var(--radius-card);padding:1rem 1.2rem;font-weight:600;font-size:1.02rem;margin-bottom:1.2rem}
.formula-line .equals{color:var(--accent)}
details.faq{border:1px solid var(--line);border-radius:var(--radius-card);padding:.8rem 1rem;margin-bottom:.7rem}
details.faq summary{font-weight:700;cursor:pointer;min-height:30px}
details.faq p{margin-top:.6rem}
.faq{max-width:760px}
.example{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:var(--radius-card);padding:.9rem 1.1rem;margin:0 0 1.2rem;max-width:760px}
.example .etag{font-size:.75rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--brand);margin-bottom:.3rem}
.example p{margin:0}
.sources{font-size:.92rem;color:var(--ink-soft);max-width:760px;margin-top:1.6rem}
.sources .slabel{display:block;font-weight:700;color:var(--ink);margin-bottom:.35rem}
.sources ul{list-style:none;margin:0;padding:0}
.sources li{margin-bottom:.35rem}
.sources .snote{color:var(--ink-soft)}
.tools{display:grid;gap:.8rem;margin:1rem 0 1.6rem}
.tcard{border:1px solid var(--line);border-radius:var(--radius-card);padding:.9rem 1rem;color:var(--ink);text-decoration:none;background:#fff;display:block}
.tcard:hover{border-color:var(--brand);color:var(--brand);text-decoration:none}
.tcard h3{margin:0 0 .2rem;font-size:1.05rem}
.tcard p{font-weight:400;font-size:.92rem;color:var(--ink-soft);margin:0}
.tcard .go{display:inline-block;margin-top:.45rem;font-weight:700;color:var(--brand);font-size:.92rem}
.sec-head .kick{font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand)}
.printbar{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin:0 0 1rem}
.scrollhint{display:none;font-size:.85rem;color:var(--ink-soft);margin:0 0 .5rem}
.charttable th:first-child,.charttable td:first-child{position:sticky;left:0;background:#fff;z-index:1}
.charttable tr.row-highlight th:first-child{background:var(--cream)}

/* ---------- footer ---------- */
footer.site{background:var(--ink);color:#D8DEEA;margin-top:3rem}
footer.site a{color:#fff;text-decoration:none}
footer.site a:hover{text-decoration:underline}
.foot-grid{display:grid;gap:1.4rem;padding:2rem 0 1.2rem}
.foot-grid .fch{color:#fff;font-size:1rem;font-weight:700;margin:0 0 .6rem}
.foot-grid ul{list-style:none;margin:0;padding:0}
.foot-grid li{margin-bottom:.4rem}
.brand-blurb{margin:.7rem 0 1rem;max-width:34rem}
.built{margin:0 0 .4rem}
.built a{font-weight:600}
.prow{display:flex;gap:.9rem;flex-wrap:wrap;margin-top:.5rem}
.prow a{font-weight:600}
.contact-line{margin:0 0 .4rem}
.foot-bottom{border-top:1px solid #33415E;padding:1rem 0 1.4rem;font-size:.9rem;display:flex;gap:.5rem;flex-wrap:wrap;align-items:center}
.foot-bottom .sep{opacity:.6}
footer.site .logo{color:#fff}
footer.site .logo .logo-sub{color:#9FB0CC}

.totop{position:fixed;right:18px;bottom:18px;width:46px;height:46px;border-radius:50%;background:var(--brand);border:0;cursor:pointer;display:none;align-items:center;justify-content:center;z-index:55;box-shadow:0 6px 18px rgba(20,33,61,.3)}
.totop.show{display:flex}
@media (max-width:959px){.totop{bottom:76px}}

/* ---------- responsive ---------- */
@media (min-width:640px){
  .stat-grid{grid-template-columns:repeat(4,1fr)}
  .tools{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:960px){
  h1{font-size:2.5rem}
  .calc-shell{grid-template-columns:1fr 1fr;align-items:start}
  .results-card{position:sticky;top:1rem}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}
}
@media (max-width:959px){
  nav.mainnav{display:none}
  .burger{display:inline-flex}
  .take-home-big{font-size:1.9rem}
  .field-row{grid-template-columns:1fr 1fr}
}
@media (max-width:480px){
  .field-row{grid-template-columns:1fr}
  .scrollhint{display:block}
}

/* ---------- print: chart + matrix pages print the table, nothing else ---------- */
@media print{
  header.site,footer.site,.hub-strip,.totop,.stickybar,.toc,.printbar,.faq,.sources,.byline,.calc-shell,.scrollhint,.noprint{display:none !important}
  body{font-size:12pt;color:#000}
  .table-scroll{overflow:visible}
  table{font-size:10.5pt}
  a{color:#000;text-decoration:none}
}