:root{
  --paper:#F8F7F4;
  --panel:#EFEDE7;
  --navy:#0E2433;
  --navy-deep:#091B28;
  --ink:#1B2630;
  --ink-soft:#4B5663;
  --rule:#DCD9D1;
  --copper:#0F766E;
  --copper-deep:#0B5D57;
  --oxide:#16384C;
  --coal:#0E5560;
  --copper-band:#128079;
  --potash:#7FC4BC;
  --max:1120px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
body{
  font-family:'Public Sans',-apple-system,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
a{color:var(--copper-deep)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--copper);outline-offset:3px;
}
h1,h2,h3{font-family:'Archivo',sans-serif;line-height:1.12;letter-spacing:-0.015em;color:var(--navy)}
.eyebrow{
  font-family:'IBM Plex Mono',monospace;
  font-size:12.5px;letter-spacing:0.14em;text-transform:uppercase;
  color:var(--copper-deep);display:block;margin-bottom:18px;
}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(248,247,244,0.93);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--rule);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{
  font-family:'Archivo',sans-serif;font-weight:800;font-size:19px;
  letter-spacing:-0.01em;color:var(--navy);text-decoration:none;
  display:flex;align-items:center;gap:10px;
}
.logo .mark{display:inline-block;width:18px;height:18px;flex:none}
.logo .mark span{display:block;height:25%}
.logo .mark span:nth-child(1){background:var(--oxide)}
.logo .mark span:nth-child(2){background:var(--coal)}
.logo .mark span:nth-child(3){background:var(--copper-band)}
.logo .mark span:nth-child(4){background:var(--potash)}
nav ul{display:flex;gap:30px;list-style:none;align-items:center}
nav ul a{text-decoration:none;color:var(--ink-soft);font-size:15px;font-weight:500}
nav ul a:hover{color:var(--navy)}
.btn{
  display:inline-block;background:var(--navy);color:#fff;text-decoration:none;
  font-family:'Archivo',sans-serif;font-weight:600;font-size:15px;
  padding:11px 22px;border:none;cursor:pointer;
  transition:background .18s ease;
}
.btn:hover{background:var(--copper-deep)}
.btn.ghost{background:transparent;color:var(--navy);box-shadow:inset 0 0 0 1.5px var(--navy)}
.btn.ghost:hover{background:var(--navy);color:#fff}
.menu-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--navy)}

/* ---------- hero ---------- */
.hero{padding:92px 0 0}
.hero h1{font-size:clamp(38px,5.4vw,62px);font-weight:800;max-width:18ch;margin-bottom:26px}
.hero p.lede{font-size:clamp(17px,2vw,20px);color:var(--ink-soft);max-width:60ch;margin-bottom:36px}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:80px}

/* strata band — the signature */
.strata{list-style:none;display:block}
.strata li{
  display:flex;align-items:center;
  font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:0.12em;
  text-transform:uppercase;color:#fff;padding-left:24px;
}
.strata li:nth-child(1){background:var(--oxide);height:34px}
.strata li:nth-child(2){background:var(--coal);height:46px}
.strata li:nth-child(3){background:var(--copper-band);height:30px}
.strata li:nth-child(4){background:var(--potash);height:24px;color:var(--ink)}
.strata li span{opacity:.85}
.strata-rule{display:flex;height:5px;border:none;margin:0}
.strata-rule i{flex:1}
.strata-rule i:nth-child(1){background:var(--oxide)}
.strata-rule i:nth-child(2){background:var(--coal)}
.strata-rule i:nth-child(3){background:var(--copper-band)}
.strata-rule i:nth-child(4){background:var(--potash)}

/* ---------- sections ---------- */
section{padding:92px 0}
section h2{font-size:clamp(28px,3.6vw,42px);font-weight:700;max-width:26ch;margin-bottom:18px}
section .intro{color:var(--ink-soft);max-width:64ch;margin-bottom:48px}

/* services */
#services{background:var(--panel)}
.svc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule)}
.svc{background:var(--panel);padding:34px 30px;transition:background .18s ease;text-decoration:none;display:block;color:inherit}
a.svc:hover{background:#fff}
.svc h3{font-size:20px;font-weight:700;margin-bottom:12px}
.svc p{font-size:15.5px;color:var(--ink-soft)}
.svc .tag{
  font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:0.12em;
  text-transform:uppercase;color:var(--copper-deep);display:block;margin-bottom:16px;
}
.svc .more{
  font-family:'Archivo',sans-serif;font-weight:600;font-size:14px;color:var(--copper-deep);
  display:inline-block;margin-top:16px;
}

/* haul truck pull-quote panel */
.maintain{background:var(--navy-deep);color:#E9E6DF;padding:100px 0}
.maintain blockquote{
  font-family:'Archivo',sans-serif;font-weight:700;
  font-size:clamp(26px,3.8vw,44px);line-height:1.2;letter-spacing:-0.015em;
  max-width:24ch;color:#fff;margin-bottom:28px;
}
.maintain blockquote em{font-style:normal;color:var(--potash)}
.maintain p{color:#ADB4BA;max-width:60ch;font-size:17px}

/* approach */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:40px}
.step{border-top:3px solid var(--navy);padding-top:22px}
.step .num{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--copper-deep);display:block;margin-bottom:10px}
.step h3{font-size:20px;margin-bottom:10px}
.step p{font-size:15.5px;color:var(--ink-soft)}

/* experience */
#experience{background:var(--navy);color:#E9E6DF}
#experience h2{color:#fff}
#experience .intro{color:#ADB4BA}
#experience .eyebrow{color:var(--potash)}
.exp-cols{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.exp-cols h3{
  font-family:'IBM Plex Mono',monospace;font-size:12.5px;letter-spacing:0.14em;
  text-transform:uppercase;font-weight:500;color:var(--potash);margin-bottom:18px;
}
.exp-cols ul{list-style:none}
.exp-cols li{padding:11px 0;border-bottom:1px solid rgba(255,255,255,0.12);font-size:15.5px}
.exp-cols li:last-child{border-bottom:none}

/* about */
.about-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:64px;align-items:start}
.about-grid .bio p{margin-bottom:18px;color:var(--ink-soft)}
.about-grid .bio p strong{color:var(--ink)}
.cred-card{background:var(--panel);border:1px solid var(--rule);padding:30px}
.cred-card h3{font-size:17px;margin-bottom:16px}
.cred-card ul{list-style:none}
.cred-card li{padding:9px 0;border-bottom:1px solid var(--rule);font-size:15px;color:var(--ink-soft)}
.cred-card li:last-child{border-bottom:none}
.principal-name{font-size:22px;font-family:'Archivo',sans-serif;font-weight:700;margin-bottom:4px;color:var(--navy)}
.principal-role{font-family:'IBM Plex Mono',monospace;font-size:12.5px;letter-spacing:0.12em;text-transform:uppercase;color:var(--copper-deep);display:block;margin-bottom:22px}

/* contact */
#contact{background:var(--panel)}
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:64px}
.contact-info p{color:var(--ink-soft);margin-bottom:22px;max-width:42ch}
.contact-info .line{font-size:15.5px;margin-bottom:14px;color:var(--ink)}
.contact-info .line span{
  font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:0.12em;
  text-transform:uppercase;color:var(--ink-soft);display:block;
}
form .field{margin-bottom:18px}
form label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
form input,form textarea{
  width:100%;padding:12px 14px;border:1px solid var(--rule);background:#fff;
  font-family:'Public Sans',sans-serif;font-size:15.5px;color:var(--ink);
}
form textarea{min-height:120px;resize:vertical}
form .fine{font-size:13px;color:var(--ink-soft);margin-top:12px}

/* ---------- service detail pages ---------- */
.svc-hero{padding:84px 0 64px;border-bottom:1px solid var(--rule)}
.svc-hero h1{font-size:clamp(34px,4.6vw,54px);font-weight:800;max-width:20ch;margin-bottom:22px}
.svc-hero p.lede{font-size:clamp(17px,2vw,19px);color:var(--ink-soft);max-width:62ch}
.svc-body{padding:72px 0}
.svc-body .block{margin-bottom:56px;max-width:760px}
.svc-body h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:16px}
.svc-body p{color:var(--ink-soft);margin-bottom:14px}
.svc-body ul.plain{list-style:none;margin-top:8px}
.svc-body ul.plain li{
  padding:13px 0 13px 26px;border-bottom:1px solid var(--rule);
  font-size:16px;color:var(--ink);position:relative;
}
.svc-body ul.plain li::before{
  content:"";position:absolute;left:0;top:22px;width:12px;height:3px;background:var(--copper);
}
.svc-body ul.plain li:last-child{border-bottom:none}
.cta-panel{background:var(--navy);padding:72px 0}
.cta-panel h2{color:#fff;margin-bottom:14px}
.cta-panel p{color:#ADB4BA;max-width:56ch;margin-bottom:30px}
.cta-panel .btn{background:var(--copper);color:#fff}
.cta-panel .btn:hover{background:var(--copper-deep)}
.crumb{
  font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:0.1em;
  text-transform:uppercase;color:var(--ink-soft);
}
.crumb a{color:var(--ink-soft);text-decoration:none}
.crumb a:hover{color:var(--copper-deep)}

/* footer */
footer{background:var(--navy-deep);color:#ADB4BA;padding:40px 0;font-size:14px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;align-items:center}
footer a{color:#E9E6DF;text-decoration:none}
footer a:hover{text-decoration:underline}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .exp-cols,.about-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
  nav ul{
    display:none;position:absolute;top:68px;left:0;right:0;
    background:var(--paper);border-bottom:1px solid var(--rule);
    flex-direction:column;gap:0;padding:8px 0;
  }
  nav ul.open{display:flex}
  nav ul li{width:100%}
  nav ul a,nav ul .btn{display:block;padding:14px 24px;width:100%;text-align:left}
  nav ul .btn{background:none;color:var(--navy);font-weight:600}
  .menu-toggle{display:block}
  .hero{padding-top:60px}
  section{padding:68px 0}
}

/* principals (two-card layout) */
.principal-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.principal-card{background:var(--panel);border:1px solid var(--rule);padding:34px 32px}
.principal-card p{color:var(--ink-soft);margin-bottom:20px;font-size:15.5px}
.cred-list{list-style:none}
.cred-list li{padding:9px 0;border-bottom:1px solid var(--rule);font-size:14.5px;color:var(--ink-soft)}
.cred-list li:last-child{border-bottom:none}
@media (max-width:860px){.principal-grid{grid-template-columns:1fr}}

/* image logo */
.logo img{height:46px;width:auto;display:block}

/* principal headshots */
.headshot{width:120px;height:120px;object-fit:cover;border-radius:4px;margin-bottom:20px;display:block}

/* approach: one line on desktop */
.steps{grid-template-columns:repeat(4,1fr);gap:32px}
@media (max-width:1000px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}

/* footer columns */
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:48px;padding-top:8px;padding-bottom:28px;align-items:start}
.foot-brand p{margin-bottom:10px;max-width:38ch}
.foot-brand strong{color:#fff;font-family:'Archivo',sans-serif;font-size:16px}
.foot-head{font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:0.14em;text-transform:uppercase;color:#7FC4BC;margin-bottom:14px}
.foot-links{list-style:none}
.foot-links li{padding:5px 0}
.foot-links a{font-size:14px}
.foot-base{border-top:1px solid rgba(255,255,255,0.12);padding-top:20px;font-size:13px}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr;gap:32px}}

/* selected work */
#work{background:var(--panel)}
.work-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.work-card{background:#fff;border:1px solid var(--rule);padding:30px 28px}
.work-card .tag{font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:0.12em;text-transform:uppercase;color:var(--copper-deep);display:block;margin-bottom:14px}
.work-card p{font-size:15.5px;color:var(--ink-soft)}

/* work card tags: larger and more legible than the mono eyebrows */
.work-card .tag{
  font-family:'Archivo',sans-serif;font-size:16px;font-weight:700;
  letter-spacing:0;text-transform:none;color:var(--copper-deep);
  margin-bottom:12px;
}
.work-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}