/* Red Brick Engineering — shared stylesheet for interior (multi-page) pages.
   Brand tokens and chrome mirror the single-page site (index.html) so the two
   read as one site. Interior pages use root-absolute asset/link paths. */
:root{
  --brick:#A6191F; --brick-deep:#7E1217; --ink:#1C1A18; --mortar:#6E6257;
  --line:#E4DBCE; --paper:#FAF6EF; --panel:#F2EBDF; --kiln:#151110;
  --kiln-ink:#EDE7E1; --kiln-mortar:#A79A90;
  --display:'Helvetica Neue',Helvetica,Arial,sans-serif;
  --body:Georgia,'Times New Roman',serif;
  --label:Arial,'Helvetica Neue',sans-serif;
  color-scheme:light;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:17.5px;line-height:1.75}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--display);font-weight:700;line-height:1.08;text-wrap:balance;letter-spacing:-.015em}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.reading{max-width:760px}

.ribbon{background:var(--ink);color:#CDC4BD;font-family:var(--label);font-size:11.5px;letter-spacing:.08em;text-align:center;padding:7px 16px}
.ribbon strong{color:#fff;letter-spacing:.14em}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(250,246,239,.93);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:28px;height:74px}
.nav .logo img{height:42px;width:auto}
.nav-links{display:flex;gap:26px;margin-left:auto;list-style:none}
.nav-links a{font-family:var(--label);font-size:12.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;text-decoration:none;color:var(--ink);padding:6px 2px;border-bottom:2px solid transparent}
.nav-links a:hover{border-bottom-color:var(--brick)}
.nav-links a[aria-current="page"]{border-bottom-color:var(--brick)}
.nav-phone{font-family:var(--label);font-size:13px;font-weight:700;letter-spacing:.04em;text-decoration:none;color:var(--mortar);white-space:nowrap}
.btn{display:inline-block;font-family:var(--label);font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;text-decoration:none;padding:14px 26px;background:var(--brick);color:#fff;border:none;cursor:pointer;transition:background .15s}
.btn:hover{background:var(--brick-deep)}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}
.btn.ghost:hover{background:var(--ink);color:#fff}
.btn.light{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.85)}
.btn.light:hover{background:#fff;color:var(--ink)}
.btn.sm{padding:11px 20px;font-size:12px}
.menu-btn{display:none;margin-left:auto;background:none;border:1.5px solid var(--ink);font-family:var(--label);font-size:11px;font-weight:700;letter-spacing:.12em;padding:9px 14px;cursor:pointer}

.eyebrow{display:flex;align-items:center;gap:10px;font-family:var(--label);font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--brick)}
.eyebrow::before{content:"";width:22px;height:11px;background:var(--brick);flex:none}
.on-dark .eyebrow{color:#E2534F}
.on-dark .eyebrow::before{background:#E2534F}

/* ---------- breadcrumb ---------- */
.crumb{border-bottom:1px solid var(--line);background:var(--paper)}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-family:var(--label);font-size:11.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--mortar)}
.crumb a{text-decoration:none;color:var(--mortar)}
.crumb a:hover{color:var(--brick)}
.crumb li[aria-current]{color:var(--ink)}
.crumb li+li::before{content:"›";margin-right:8px;color:var(--line)}

/* ---------- page hero ---------- */
.phero{background:var(--panel);border-top:3px solid var(--brick);border-bottom:1px solid var(--line)}
.phero .wrap{padding-top:74px;padding-bottom:74px}
.phero h1{font-size:clamp(34px,5vw,60px);font-weight:800;text-transform:uppercase;letter-spacing:-.012em;margin:20px 0 22px;max-width:20ch}
.phero .lede{font-size:20px;line-height:1.65;color:var(--ink);max-width:60ch;font-family:var(--body)}
.phero .cta-row{display:flex;align-items:center;gap:20px;margin-top:34px;flex-wrap:wrap}

/* ---------- prose body ---------- */
.body-sec{padding:78px 0}
.prose h2{font-size:clamp(25px,3vw,34px);font-weight:800;margin:0 0 18px;color:var(--ink)}
.prose section{padding:0 0 44px}
.prose section+section{border-top:1px solid var(--line);padding-top:44px}
.prose p{margin:0 0 18px;max-width:68ch}
.prose p:last-child{margin-bottom:0}

/* ---------- capabilities ---------- */
.caps{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:64px 0}
.caps h2{font-family:var(--display);font-size:14px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--brick);margin-bottom:28px}
.caps ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:2px 40px}
.caps li{position:relative;padding:16px 0 16px 30px;border-bottom:1px solid var(--line);font-family:var(--body);font-size:16.5px;line-height:1.5}
.caps li::before{content:"";position:absolute;left:0;top:22px;width:12px;height:6px;background:var(--brick)}

/* ---------- related projects ---------- */
.rel{padding:78px 0}
.rel-head{font-family:var(--label);font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--mortar);margin-bottom:24px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel-card{display:block;text-decoration:none;color:inherit;border:1px solid var(--line);background:#fff;transition:box-shadow .18s,transform .18s}
.rel-card:hover{box-shadow:0 14px 34px rgba(20,16,15,.14);transform:translateY(-3px)}
.rel-card figure{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--panel)}
.rel-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.rel-card:hover img{transform:scale(1.05)}
.rel-card .tag{position:absolute;top:12px;left:12px;background:var(--brick);color:#fff;font-family:var(--label);font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:5px 10px}
.rel-card .cap{padding:16px 18px 20px}
.rel-card .cap b{display:block;font-family:var(--display);font-size:18px;font-weight:800;letter-spacing:-.01em}
.rel-card .cap span{display:block;margin-top:5px;font-family:var(--label);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--mortar)}

/* ---------- faq ---------- */
.faq{background:var(--panel);border-top:1px solid var(--line);padding:78px 0}
.faq h2{font-size:clamp(25px,3vw,34px);font-weight:800;margin-bottom:34px}
.faq dl{max-width:820px}
.faq dt{font-family:var(--display);font-size:19px;font-weight:800;letter-spacing:-.01em;padding-top:26px;margin-top:26px;border-top:1px solid var(--line)}
.faq dl>dt:first-child{border-top:none;margin-top:0;padding-top:0}
.faq dd{margin:12px 0 0;color:var(--ink);max-width:68ch}

/* ---------- cross-links ---------- */
.xlinks{padding:70px 0}
.xlinks h2{font-family:var(--label);font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--mortar);margin-bottom:24px}
.xgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.xcard{display:block;text-decoration:none;color:inherit;border:1px solid var(--line);background:#fff;padding:24px 22px;transition:border-color .15s,background .15s}
.xcard:hover{border-color:var(--brick);background:#fff}
.xcard b{display:block;font-family:var(--display);font-size:17px;font-weight:800;letter-spacing:-.01em;margin-bottom:6px}
.xcard span{font-family:var(--body);font-size:14.5px;color:var(--mortar);line-height:1.5}
.xcard .go{display:inline-block;margin-top:12px;font-family:var(--label);font-size:11.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--brick)}

/* ---------- CTA band ---------- */
.cta-band{background:var(--kiln);color:var(--kiln-ink);padding:80px 0}
.cta-band .in{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(26px,3.4vw,40px);font-weight:800;max-width:20ch}
.cta-band p{color:var(--kiln-mortar);margin-top:14px;max-width:44ch}
.cta-band .act{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.cta-band .callnum{font-family:var(--label);font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--kiln-mortar);text-decoration:none}
.cta-band .callnum:hover{color:#fff}

/* ---------- footer ---------- */
footer{background:#0F0C0B;color:var(--kiln-mortar);padding:34px 0;font-family:var(--label);font-size:12.5px;letter-spacing:.06em}
.foot{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.foot nav{display:flex;gap:22px;flex-wrap:wrap}
.foot a{color:var(--kiln-mortar);text-decoration:none;text-transform:uppercase;letter-spacing:.1em;font-size:11.5px}
.foot a:hover{color:#fff}
.foot .states{font-size:11px;letter-spacing:.1em}

/* ---------- responsive ---------- */
@media(max-width:760px){
  .menu-btn{display:block}
  .nav-links{display:none}
  .nav.open .nav-links{display:flex;position:absolute;top:74px;left:0;right:0;background:var(--paper);flex-direction:column;gap:0;padding:10px 24px 20px;border-bottom:1px solid var(--line);margin-left:0}
  .nav.open .nav-links a{display:block;padding:13px 0;border-bottom:1px solid var(--line)}
  .nav .nav-phone,.nav .btn{display:none}
  .rel-grid{grid-template-columns:1fr 1fr}
  .xgrid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  body{font-size:17px}
  .caps ul{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .xgrid{grid-template-columns:1fr}
  .phero .wrap{padding-top:52px;padding-bottom:52px}
  .cta-band .in{flex-direction:column;align-items:flex-start}
}