/* ==========================================================================
   OPC Industrial & Mining — site stylesheet
   One file. Every page links it. Edit here, every page follows.
   Brand: red #A51E22 (deep companion #741417) · dark #1B242C · ink #1F2830
   ========================================================================== */

:root{
  --red:#A51E22;
  --red-deep:#741417;
  --red-lift:#E8555B;      /* red that holds up on the dark band */
  --dark:#1B242C;
  --dark-2:#39434E;
  --ink:#1F2830;
  --ink-2:#4A5560;
  --muted:#7E8C99;
  --paper:#F3F6F8;
  --paper-2:#EEF2F5;
  --rule:#D5DDE4;
  --rule-2:#E4EAEF;
  --white:#fff;

  --sans:"Liberation Sans",Arial,Helvetica,sans-serif;
  --mono:"Liberation Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --pad:20px;              /* page gutter, mobile */
  --max:1100px;            /* content width cap */
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--white);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%}
a{color:var(--red);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--red-deep)}
:focus-visible{outline:3px solid var(--red);outline-offset:2px}

.wrap{max-width:var(--max);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;z-index:20;background:var(--white);padding:10px 14px;border:2px solid var(--red)}

/* ---------- masthead ---------------------------------------------------- */

.mast{background:var(--dark);color:var(--white);position:relative}
.mast:after{content:"";position:absolute;left:0;right:0;bottom:0;height:4px;background:var(--red)}
.mast .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  padding-top:14px;padding-bottom:16px}

/* Brand lockup: assets/logo.png is the white-on-transparent emblem+wordmark
   recovered from the Rev. A guide (1100x346). Swap the file to update everywhere. */
.brand{display:block;margin-right:auto;line-height:0}
.brand img{height:46px;width:auto;display:block}
@media (max-width:420px){.brand img{height:38px}}

.mast .tel{font-size:14px;color:#C7D2DB;text-decoration:none;white-space:nowrap;font-weight:700}
.mast .tel:hover{color:var(--white)}

nav{background:var(--dark-2)}
nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap}
/* No text-transform on nav: "Hrd67" is set closed with a capital H only —
   HRD67 in full caps is internal-only casing and must not appear on a public page. */
nav a{display:block;padding:11px 0;margin-right:26px;color:#C7D2DB;text-decoration:none;
  font-size:15px;letter-spacing:.045em;font-weight:700;
  border-bottom:3px solid transparent}
nav a:hover{color:var(--white)}
nav a[aria-current="page"]{color:var(--white);border-bottom-color:var(--red)}

/* ---------- type -------------------------------------------------------- */

main{display:block}
section{padding:36px 0}
section + section{border-top:1px solid var(--rule)}
.rhead{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--red);
  font-weight:700;border-bottom:2px solid var(--dark);padding-bottom:5px;margin:0 0 16px}
h1{font-size:clamp(28px,7vw,44px);line-height:1.06;letter-spacing:-.02em;margin:0 0 14px;
  font-weight:700;text-wrap:balance}
h1 em{font-style:normal;color:var(--red)}
h2{font-size:clamp(21px,4vw,27px);line-height:1.18;letter-spacing:-.01em;margin:0 0 12px;
  font-weight:700;text-wrap:balance}
h3{font-size:17px;margin:0 0 6px;font-weight:700}
p{margin:0 0 14px;max-width:68ch}
.lede{font-size:clamp(18px,2.4vw,21px);line-height:1.42}
.small{font-size:14.5px;line-height:1.45;color:var(--ink-2)}
.k{color:var(--red);font-weight:700}
.pn{font-family:var(--mono);font-size:.86em;background:var(--paper-2);padding:2px 5px;
  border-radius:2px;color:var(--dark);white-space:nowrap}
.tag{display:inline-block;background:var(--dark);color:var(--white);font-size:11px;
  letter-spacing:.13em;text-transform:uppercase;padding:3px 9px;font-weight:700}

/* ---------- hero -------------------------------------------------------- */

.hero{background:var(--dark);color:var(--white);padding:40px 0 44px}
.hero h1{color:var(--white)}
.hero h1 em{color:var(--red-lift)}
.hero .lede{color:#C7D2DB;max-width:44ch}
.hero .sub{font-size:15px;color:#9FB0BE;letter-spacing:.02em;margin-bottom:18px}

.panel{background:var(--paper);border:1px solid var(--rule);padding:16px}
.panel svg{display:block;width:100%;height:auto}

/* ---------- generic layout --------------------------------------------- */

.stack{display:flex;flex-direction:column;gap:26px}
.cols{display:grid;grid-template-columns:1fr;gap:26px}
.cards{display:grid;grid-template-columns:1fr;gap:16px}
.callouts{display:grid;grid-template-columns:1fr;gap:14px;margin-top:18px}

.callout{border-top:2px solid var(--red);padding-top:8px}
.callout b{display:block;font-size:15px}
.callout span{display:block;font-size:13.5px;color:var(--ink-2);line-height:1.4}

.note{border-left:5px solid var(--red);padding:2px 0 2px 14px}
.note h3{font-size:16px}

.band{background:var(--dark);color:#C7D2DB;padding:24px}
.band h2,.band h3{color:var(--white)}
.band p{color:#C7D2DB}
.band a:not(.btn){color:var(--red-lift)}

.cond{border:1px solid var(--red);border-left-width:5px;padding:14px 16px}
.cond h3{color:var(--red)}
.cond p:last-child{margin-bottom:0}

.bullets{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px}
.bullets li{padding-left:18px;position:relative;font-size:15.5px;line-height:1.45;color:var(--ink-2)}
.bullets li:before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;background:var(--red)}
.bullets b{display:block;color:var(--ink)}

/* ---------- route cards ------------------------------------------------- */

.route{border:1px solid var(--rule);border-top:5px solid var(--dark);padding:16px 16px 18px;
  display:flex;flex-direction:column}
.route .n{font-size:11px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
.route h3{font-size:19px;margin:4px 0 10px}
.route .pic{height:104px;display:flex;align-items:center;justify-content:center;margin:4px 0 14px}
.route .pic svg{height:100%;width:auto;max-width:100%}
.route p{font-size:15.5px;margin-bottom:10px}
.route .lead{margin-top:auto;font-size:13.5px;color:var(--muted);
  border-top:1px solid var(--rule-2);padding-top:9px}

/* ---------- steps ------------------------------------------------------- */

.step{border:1px solid var(--rule);padding:16px;position:relative}
.step .num{position:absolute;top:-1px;right:-1px;background:var(--red);color:var(--white);
  font-size:12px;font-weight:700;padding:3px 8px}
.step .pic{height:70px;display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.step .pic svg{height:100%;width:auto}
.step h3{font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:6px}
.step p{font-size:14.5px;margin:0;color:var(--ink-2)}

/* ---------- component groups ------------------------------------------- */

.grp{border:1px solid var(--rule);margin-bottom:16px}
.grp .gh{background:var(--paper-2);border-bottom:1px solid var(--rule);padding:10px 14px;
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:4px 12px}
.grp .gh b{font-size:16px}
.grp .gh span{font-size:12.5px;color:#5A6672}
.grp .gh .exch{color:var(--red);font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  font-size:11px}
.grp .gb{padding:14px}
.cells{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.cell{text-align:center}
.cell .thumb{height:62px;display:flex;align-items:center;justify-content:center}
.cell .thumb svg{height:100%;width:auto;max-width:100%}
.cell .cn{font-size:13px;font-weight:700;margin-top:7px}
.cell .cp{font-family:var(--mono);font-size:11px;color:#6B7885;word-break:break-all}
.gnote{border-top:1px solid var(--rule-2);margin-top:14px;padding-top:12px}
.gnote p{font-size:14.5px;line-height:1.45;margin:0 0 6px;color:var(--ink-2)}
.gnote p:last-child{margin-bottom:0}

/* ---------- tables ------------------------------------------------------ */

.tw{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
th{background:var(--dark);color:var(--white);text-align:left;padding:8px 11px;font-size:11.5px;
  letter-spacing:.09em;text-transform:uppercase;font-weight:700}
td{border-bottom:1px solid var(--rule-2);padding:9px 11px;vertical-align:top;color:var(--ink-2)}
td.m{font-family:var(--mono);font-size:13.5px;color:var(--ink)}
td b{color:var(--ink)}

/* ---------- calls to action --------------------------------------------- */

.btn{display:inline-block;background:var(--red);color:var(--white);text-decoration:none;
  font-weight:700;font-size:15.5px;letter-spacing:.02em;padding:13px 22px;border:2px solid var(--red)}
.btn:hover{background:var(--red-deep);border-color:var(--red-deep);color:var(--white)}
.btn.ghost{background:transparent;color:var(--white);border-color:#7E8C99}
.btn.ghost:hover{background:var(--white);color:var(--dark);border-color:var(--white)}
.btnrow{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}
.btnrow .btn{flex:1 1 auto;text-align:center}
@media (min-width:560px){.btnrow .btn{flex:0 0 auto}}

/* ---------- footer ------------------------------------------------------ */

footer{background:var(--dark);color:#9FB0BE;font-size:14px;padding:30px 0 34px;margin-top:8px}
footer a{color:#C7D2DB;text-decoration:none}
footer a:hover{color:var(--white);text-decoration:underline}
footer .fgrid{display:grid;grid-template-columns:1fr;gap:22px}
footer h3{color:var(--white);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  margin:0 0 10px}
footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:7px}
footer .legal{border-top:1px solid #2C3844;margin-top:24px;padding-top:16px;font-size:12.5px;
  color:#7E8C99}

/* ---------- wider screens ----------------------------------------------- */

@media (min-width:720px){
  :root{--pad:32px}
  section{padding:46px 0}
  .cols{grid-template-columns:1fr 1fr;gap:34px}
  .cols.lead-left{grid-template-columns:1.3fr 1fr}
  .cards{grid-template-columns:repeat(3,1fr)}
  .cards.two{grid-template-columns:repeat(2,1fr)}
  .cards.four{grid-template-columns:repeat(2,1fr)}
  .callouts{grid-template-columns:repeat(2,1fr);gap:16px 22px}
  .cells{grid-template-columns:repeat(4,1fr)}
  .grp .gb{display:grid;grid-template-columns:1.6fr 1fr;gap:18px;align-items:start}
  .gnote{border-top:0;border-left:1px solid var(--rule-2);margin-top:0;padding:0 0 0 18px}
  footer .fgrid{grid-template-columns:1.4fr 1fr 1fr}
  .hero{padding:56px 0 60px}
}

@media (min-width:1000px){
  .callouts{grid-template-columns:repeat(5,1fr)}
  .cards.four{grid-template-columns:repeat(4,1fr)}
  .hero .wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
}

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

/* ---------- print -------------------------------------------------------- */

@media print{
  nav,.btnrow,.skip{display:none}
  body{font-size:11pt}
  .hero,.band,.mast,footer{background:#fff!important;color:#000!important}
  .hero h1,.band h2,.band h3,footer h3{color:#000!important}
  a{color:#000;text-decoration:none}
}