/* Millcrown: engineering-drawing / spec-card aesthetic. Class prefix sp- */
:root {
  --paper: #FAFAF8;
  --card: #FFFFFF;
  --panel: #F1F2EE;
  --ink: #20242B;
  --blue: #1E3A5F;
  --blue-d: #14293F;
  --blue-m: #5B7396;
  --amber: #D97B29;
  --amber-d: #B55F17;
  --line: #D8DBD4;
  --grid: rgba(30, 58, 95, .055);
  --sans: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.65 var(--sans);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration-color: var(--amber); text-underline-offset: 3px; }
a:hover { color: var(--amber-d); }
h1, h2, h3 { font-family: var(--sans); font-weight: 650; line-height: 1.2; color: var(--blue-d); letter-spacing: -0.01em; }
h1 { font-size: clamp(30px, 3.9vw, 46px); margin: 8px 0 14px; }
h2 { font-size: 24px; margin: 30px 0 12px; }
h3 { font-size: 19px; margin: 24px 0 8px; }
.sp-skip { position: absolute; left: -999px; top: 0; background: var(--blue); color: #fff; padding: 8px 12px; z-index: 50; }
.sp-skip:focus { left: 8px; }
.sp-vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.sp-code { font: 600 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--amber-d); }
.sp-small { font-size: 14px; color: var(--blue-m); }

/* masthead: drawing title block header */
.sp-top { position: sticky; top: 0; z-index: 20; background: var(--paper); border-bottom: 2px solid var(--blue); }
.sp-mast { max-width: 1240px; margin: 0 auto; padding: 10px 28px; display: flex; align-items: center; gap: 26px; border-bottom: 1px solid var(--line); }
.sp-brand { display: flex; align-items: center; gap: 9px; text-decoration: none; font: 700 23px/1 var(--sans); letter-spacing: .01em; color: var(--blue-d); }
.sp-mast__meta { margin: 0 0 0 auto; display: flex; gap: 22px; font: 11px/1.4 var(--mono); letter-spacing: .1em; color: var(--blue-m); text-transform: uppercase; }
.sp-mast__meta b { display: block; color: var(--blue-d); font-size: 13.5px; }
.sp-cta { background: var(--amber); color: #fff; text-decoration: none; padding: 10px 16px; font-size: 14.5px; border-radius: 2px; font-weight: 600; }
.sp-cta:hover { background: var(--amber-d); color: #fff; }
.sp-nav { max-width: 1240px; margin: 0 auto; padding: 0 28px; }
.sp-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 22px; overflow-x: auto; }
.sp-nav a { text-decoration: none; font-size: 15px; color: var(--ink); padding: 11px 0; border-bottom: 3px solid transparent; white-space: nowrap; }
.sp-nav a[aria-current="page"], .sp-nav a:hover { color: var(--blue-d); border-bottom-color: var(--amber); }

/* title block strip */
.sp-tblock { max-width: 1240px; margin: 26px auto 0; padding: 0 28px; display: flex; gap: 14px; align-items: stretch; flex-wrap: wrap; }
.sp-rev { display: inline-flex; align-items: center; border: 2px solid var(--blue); color: var(--blue-d); padding: 6px 10px; font: 700 13px/1 var(--mono); letter-spacing: .16em; }
.sp-tblock__crumb { display: flex; align-items: center; gap: 6px; font: 12.5px/1.4 var(--mono); letter-spacing: .04em; text-transform: uppercase; color: var(--blue-m); }
.sp-tblock__cell { margin-left: auto; border-left: 1px solid var(--line); padding: 2px 0 2px 16px; font: 10.5px/1.5 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--blue-m); display: flex; flex-direction: column; justify-content: center; }
.sp-tblock__cell b { color: var(--blue-d); font-size: 12.5px; letter-spacing: .06em; }

main { max-width: 1240px; margin: 0 auto; padding: 0 28px 30px; }

/* head */
.sp-head { padding: 16px 0 6px; max-width: 920px; }
.sp-head__lede { font-size: 18.5px; color: var(--ink); max-width: 840px; }
.sp-head__img { margin: 22px 0 0; border: 1px solid var(--blue-m); background: var(--card); padding: 8px; box-shadow: 4px 4px 0 var(--panel); }
.sp-head__img img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; }
.sp-byline { font: 13px/1.4 var(--mono); color: var(--blue-m); border-bottom: 1px solid var(--line); padding-bottom: 10px; margin: 14px 0 4px; }

/* drawings */
.sp-drawing { width: 100%; max-width: 430px; border: 1px solid var(--blue-m); background: #FBFBF9; }
.sp-hero__fig .sp-drawing { box-shadow: 6px 6px 0 var(--panel); }
.sp-figures { display: flex; gap: 24px; flex-wrap: wrap; margin: 28px 0; }

/* prose */
.sp-prose { max-width: 880px; }
.sp-prose p, .sp-prose li { color: var(--ink); }
.sp-prose ul, .sp-prose ol { padding-left: 22px; }
.sp-ledger { width: 100%; border-collapse: collapse; margin: 18px 0 22px; font-size: 15.5px; background: var(--card); border: 1px solid var(--blue-m); }
.sp-ledger caption { text-align: left; font: 600 12px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--blue-m); padding-bottom: 8px; }
.sp-ledger th, .sp-ledger td { text-align: left; vertical-align: top; padding: 10px 13px; border-bottom: 1px solid var(--line); }
.sp-ledger tbody tr:last-child th, .sp-ledger tbody tr:last-child td { border-bottom: 0; }
.sp-ledger thead th { font: 600 12px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--blue-d); border-bottom: 2px solid var(--blue); background: var(--panel); }
.sp-ledger tbody th { font-weight: 600; color: var(--blue-d); }
.sp-spec { width: 100%; border-collapse: collapse; margin: 18px 0 22px; font-size: 15px; background: var(--card); border: 1px solid var(--blue-m); font-family: var(--mono); }
.sp-spec th { font: 600 12px/1.5 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--blue-m); width: 34%; text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--line); border-right: 1px solid var(--line); background: var(--panel); vertical-align: top; }
.sp-spec td { padding: 8px 12px; border-bottom: 1px solid var(--line); }
.sp-note { border-left: 4px solid var(--amber); background: var(--card); padding: 12px 18px; margin: 22px 0; }
.sp-note p { margin: 6px 0; }
.sp-steps { counter-reset: s; list-style: none; padding: 0 !important; }
.sp-steps li { counter-increment: s; position: relative; padding: 0 0 14px 48px; }
.sp-steps li::before { content: counter(s, decimal-leading-zero); position: absolute; left: 0; top: 2px; font: 700 12px/1 var(--mono); color: var(--blue-d); border: 1.5px solid var(--blue); padding: 6px 7px; background: var(--card); }

/* band separator */
.sp-band { margin-top: 42px; }
.sp-band__bar { display: flex; gap: 18px; align-items: baseline; border-top: 2px solid var(--blue); border-bottom: 1px solid var(--line); padding: 10px 2px; flex-wrap: wrap; }
.sp-band__bar > span:first-child { font: 700 12px/1 var(--mono); letter-spacing: .14em; color: var(--amber-d); }
.sp-band__bar h2 { margin: 0; font-size: 23px; }
.sp-band__bar > span:last-child { margin-left: auto; font: 12px/1.4 var(--mono); letter-spacing: .06em; color: var(--blue-m); text-transform: uppercase; }
.sp-band > p { max-width: 880px; }

/* hero */
.sp-hero { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(320px, 1fr); gap: 44px; padding: 24px 0 10px; align-items: start; }
.sp-hero h1 { font-size: clamp(33px, 4.3vw, 52px); }
.sp-hero__lede { font-size: 19px; }
.sp-hero__cta { display: flex; gap: 12px; flex-wrap: wrap; }
.sp-btn { display: inline-block; background: var(--blue); color: #fff; text-decoration: none; padding: 11px 18px; font-size: 15px; border-radius: 2px; border: 1px solid var(--blue); font-weight: 600; }
.sp-btn:hover { background: var(--amber-d); border-color: var(--amber-d); color: #fff; }
.sp-btn--line { background: transparent; color: var(--blue-d); }
.sp-btn--line:hover { background: var(--blue); color: #fff; border-color: var(--blue); }

/* cards */
.sp-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; margin-top: 18px; }
.sp-card { background: var(--card); border: 1px solid var(--blue-m); border-left: 4px solid var(--blue); padding: 14px 16px; text-decoration: none; }
.sp-card b { display: block; font: 600 16px/1.3 var(--sans); color: var(--blue-d); margin-bottom: 5px; }
.sp-card i { font-style: normal; font-size: 14px; color: var(--blue-m); }
.sp-card:hover { border-color: var(--amber); border-left-color: var(--amber); }

/* FAQ, related, cue */
.sp-qas { max-width: 880px; margin-top: 34px; }
.sp-qa { border-top: 1px solid var(--line); }
.sp-qa:last-child { border-bottom: 1px solid var(--line); }
.sp-qa summary { cursor: pointer; padding: 13px 0; font: 600 17.5px/1.4 var(--sans); color: var(--blue-d); list-style: none; }
.sp-qa summary::after { content: "+"; float: right; font-family: var(--mono); color: var(--amber); }
.sp-qa[open] summary::after { content: "-"; }
.sp-qa p { margin: 0 0 16px; }
.sp-next { max-width: 880px; margin-top: 34px; }
.sp-next ul { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.sp-next a { display: block; height: 100%; background: var(--card); border: 1px solid var(--line); padding: 12px 14px; text-decoration: none; }
.sp-next a:hover { border-color: var(--blue); }
.sp-kind { display: block; font: 600 10.5px/1.4 var(--mono); letter-spacing: .14em; color: var(--amber-d); }
.sp-cue { margin: 46px 0 0; padding: 24px 26px; display: flex; gap: 24px; align-items: center; justify-content: space-between; background: var(--blue-d); color: #E8ECF2; flex-wrap: wrap; }
.sp-cue p { margin: 0; max-width: 820px; }
.sp-cue .sp-btn { background: var(--amber); border-color: var(--amber); flex: none; }

.sp-buyers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 26px; margin-top: 16px; }
.sp-buyers p { margin: 0; }
.sp-notes { list-style: none; padding: 0; margin: 0; }
.sp-notes li { border-bottom: 1px solid var(--line); }
.sp-notes a { display: block; padding: 12px 0; text-decoration: none; }
.sp-notes b { display: block; font: 600 16.5px/1.3 var(--sans); color: var(--blue-d); }
.sp-notes span { font-size: 14px; color: var(--blue-m); }
.sp-toc ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; }
.sp-toc a { display: inline-block; border: 1px solid var(--blue-m); background: var(--card); padding: 6px 12px; text-decoration: none; font-size: 14px; }

/* RFQ */
.sp-rfq { max-width: 880px; }
.sp-rfq__step { border: 1px solid var(--blue-m); background: var(--card); margin: 0 0 16px; padding: 16px 18px 18px; }
.sp-rfq__step legend { font: 600 18px/1.2 var(--sans); color: var(--blue-d); padding: 0 8px; }
.sp-rfq__step legend .sp-code { margin-right: 8px; }
.sp-rfq__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; }
.sp-rfq label { display: flex; flex-direction: column; gap: 5px; font-size: 14.5px; }
.sp-rfq input[type="text"], .sp-rfq input[type="email"], .sp-rfq select, .sp-rfq textarea { font: 16px var(--sans); padding: 10px 11px; border: 1px solid var(--blue-m); background: #fff; color: var(--ink); border-radius: 2px; width: 100%; }
.sp-rfq input:focus, .sp-rfq select:focus, .sp-rfq textarea:focus { outline: 2px solid var(--amber); outline-offset: 1px; }
.sp-rfq__wide { margin-top: 14px; }
.sp-rfq__checks { display: flex; flex-wrap: wrap; gap: 10px 20px; margin: 16px 0 0; }
.sp-rfq__checks > span { width: 100%; font: 600 12px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--blue-m); }
.sp-rfq__checks label { flex-direction: row; align-items: center; gap: 8px; }
.sp-hp { position: absolute; left: -9999px; }
.sp-rfq__send { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.sp-rfq__status[data-state="ok"] { color: #2F6B3A; }
.sp-rfq__status[data-state="err"] { color: #A12D1E; }

/* footer */
.sp-foot { margin-top: 50px; background: var(--blue-d); color: #C9D3E0; border-top: 2px solid var(--amber); }
.sp-foot a { color: #fff; }
.sp-foot__in { max-width: 1240px; margin: 0 auto; padding: 36px 28px 10px; display: grid; grid-template-columns: 1.6fr 1.2fr 1fr 1fr; gap: 30px; font-size: 14.5px; }
.sp-foot__name { font: 700 23px/1 var(--sans); margin: 0 0 10px; color: #fff; }
.sp-foot__h { font: 600 12px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: #8FA3BD; }
.sp-foot__legal { max-width: 1240px; margin: 0 auto; padding: 12px 28px 26px; font-size: 13px; color: #8FA3BD; }

@media (max-width: 1000px) {
  .sp-hero { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .sp-mast { flex-wrap: wrap; gap: 10px 18px; }
  .sp-mast__meta { width: 100%; order: 3; gap: 16px; }
  .sp-cta { margin-left: auto; }
  .sp-tblock__cell { display: none; }
}
@media (max-width: 760px) {
  .sp-mast, .sp-nav, .sp-tblock, main { padding-left: 18px; padding-right: 18px; }
  .sp-mast__meta { font-size: 10px; gap: 10px 14px; }
  .sp-mast__meta b { font-size: 12px; }
  .sp-prose .sp-ledger, .sp-prose .sp-spec { display: block; overflow-x: auto; }
  .sp-next ul, .sp-buyers { grid-template-columns: minmax(0, 1fr); }
  .sp-foot__in { grid-template-columns: minmax(0, 1fr); padding: 28px 18px 8px; }
  .sp-foot__legal { padding: 10px 18px 22px; }
  .sp-cue { padding: 20px 18px; }
}
@media (max-width: 480px) {
  body { font-size: 16.5px; background-size: 18px 18px; }
  .sp-drawing { max-width: 100%; }
}