/* Signal Command, monochrome (Palantir-style) marketing site */
:root{
  --bg:#000; --bg2:#0a0a0a; --panel:#0e0e0e; --ink:#f7f7f7; --dim:#c4c4c4; --faint:#9a9a9a;
  --line:#2c2c2c; --line2:#4a4a4a; --accent:#fff;
  --sans:'Helvetica Neue',Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
.eyebrow{font-size:11px;letter-spacing:.28em;text-transform:uppercase;color:var(--dim);font-weight:700}
h1,h2,h3{font-weight:800;letter-spacing:-.02em;line-height:1.05}
.mut{color:var(--dim)}
.big{font-size:clamp(15px,1.5vw,19px);color:#e8e8e8;line-height:1.7}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(0,0,0,.72);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .row{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:800;letter-spacing:.14em;font-size:15px;text-transform:uppercase}
.brand span{color:var(--faint)}
.nav .links{display:flex;gap:30px;align-items:center}
.nav .links a{font-size:13px;color:var(--dim);letter-spacing:.02em}
.nav .links a:hover{color:#fff}
.nav .links a.btn{color:#000}
.nav .links a.btn:hover{color:#fff}
.btn{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:11px 20px;border:1px solid var(--ink);color:#000;background:var(--ink);transition:.15s}
.btn:hover{background:transparent;color:#fff}
.btn.ghost{background:transparent;color:#fff}
.btn.ghost:hover{background:#fff;color:#000}
/* hamburger (mobile only) */
.navtoggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:38px;background:none;border:1px solid var(--line2);border-radius:7px;padding:0 9px;cursor:pointer}
.navtoggle span{display:block;width:22px;height:2px;background:#fff;transition:.22s}
.navtoggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.navtoggle.open span:nth-child(2){opacity:0}
.navtoggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:820px){
  .navtoggle{display:flex;flex:none}
  .nav .row{gap:10px}
  .brand{font-size:13px;letter-spacing:.06em;min-width:0}
  .brand-txt{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .nav .links{position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;padding:6px 0 12px;
    background:rgba(0,0,0,.98);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);display:none}
  .nav .links.open{display:flex}
  .nav .links a{display:block;padding:15px 32px;font-size:15px;color:#e8e8e8;border-top:1px solid var(--line);letter-spacing:.02em}
  .nav .links a:first-child{border-top:0}
  .nav .links a:hover{color:#fff}
  .nav .links a.btn{margin:14px 32px 4px;text-align:center;color:#000;border:1px solid var(--ink)}
  .nav .links a.btn:hover{color:#fff}
}

/* hero */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;border-bottom:1px solid var(--line);overflow:hidden}
.hero .bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:grayscale(1) contrast(1.05) brightness(.55)}
.hero .veil{position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.9) 20%,rgba(0,0,0,.5) 70%,rgba(0,0,0,.7))}
.hero .inner{position:relative;padding:120px 0 60px}
.hero h1{font-size:clamp(38px,6.4vw,84px);max-width:15ch}
.hero p{margin-top:22px;max-width:56ch;font-size:clamp(15px,1.5vw,20px);color:#f0f0f0}
.cta-row{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}

/* sections */
section{padding:96px 0;border-bottom:1px solid var(--line)}
.section-h{font-size:clamp(28px,3.6vw,50px);max-width:20ch}
.lead{font-size:clamp(16px,1.7vw,22px);color:#e8e8e8;max-width:60ch;margin-top:18px;line-height:1.6}

/* thesis */
.thesis h2{font-size:clamp(32px,5vw,68px);max-width:16ch}
.thesis .sub{margin-top:24px;max-width:64ch}

/* domains grid */
.grid{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:44px}
.grid.g4{grid-template-columns:repeat(4,1fr)}
.grid.g3{grid-template-columns:repeat(3,1fr)}
.grid.g2{grid-template-columns:repeat(2,1fr)}
.cell{background:var(--bg);padding:26px 24px;min-height:150px}
.cell h3{font-size:16px;letter-spacing:.02em;margin-bottom:8px}
.cell p{font-size:13.5px;color:var(--dim);line-height:1.55}
.cell .n{font-size:11px;color:var(--faint);letter-spacing:.1em}
@media(max-width:900px){.grid.g4{grid-template-columns:repeat(2,1fr)}.grid.g3{grid-template-columns:1fr}}
@media(max-width:620px){.grid.g4,.grid.g2{grid-template-columns:1fr}}

/* split image row */
.split{display:grid;grid-template-columns:1fr 1fr;gap:0;align-items:stretch;border:1px solid var(--line);margin-top:44px}
.split .txt{padding:44px 40px;display:flex;flex-direction:column;justify-content:center}
.split .im{background-size:cover;background-position:center;filter:grayscale(1) contrast(1.05) brightness(.8);min-height:340px}
@media(max-width:820px){.split{grid-template-columns:1fr}.split .im{min-height:220px}}

/* steps (architecture) */
.steps{margin-top:40px;border-top:1px solid var(--line)}
.step{display:grid;grid-template-columns:70px 1fr;gap:20px;padding:22px 0;border-bottom:1px solid var(--line);align-items:start}
.step .no{font-size:26px;font-weight:800;color:var(--faint)}
.step h3{font-size:19px;margin-bottom:4px}
.step p{color:var(--dim);font-size:14.5px;max-width:70ch}
.step.hl h3{color:#fff}.step.hl .no{color:#fff}

/* case cards */
.cases{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;margin-top:44px}
.case{display:block;border:1px solid var(--line);background:var(--panel);transition:.18s}
.case:hover{border-color:#4a4a4a;transform:translateY(-2px)}
.case .im{height:230px;background-size:cover;background-position:center;filter:grayscale(1) contrast(1.05) brightness(.72)}
.case .b{padding:24px 26px}
.case .tag{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint)}
.case h3{font-size:22px;margin:8px 0}
.case p{color:var(--dim);font-size:14px}
.case .go{margin-top:14px;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:#fff}
@media(max-width:820px){.cases{grid-template-columns:1fr}}

/* CTA band */
.cta{background:#fff;color:#000;text-align:center;padding:100px 0}
.cta h2{font-size:clamp(30px,4.5vw,60px);max-width:20ch;margin:0 auto}
.cta p{margin:18px auto 0;max-width:56ch;color:#333;font-size:17px}
.cta .btn{background:#000;color:#fff;border-color:#000;margin-top:32px}
.cta .btn:hover{background:#fff;color:#000}
.cta .btn.ghost{background:transparent;color:#000}
.cta .btn.ghost:hover{background:#000;color:#fff}
.cta .cta-row{justify-content:center}

/* footer */
footer{background:#000;padding:56px 0 40px;color:var(--faint)}
footer .row{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px;font-size:13px}
footer a{color:var(--dim)}footer a:hover{color:#fff}
footer .cui{margin-top:30px;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:#4a4a4a;border-top:1px solid var(--line);padding-top:18px}

/* case study article */
.article{padding-top:64px}
.article .hero2{position:relative;min-height:58vh;display:flex;align-items:flex-end;border-bottom:1px solid var(--line)}
.article .hero2 .bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:grayscale(1) contrast(1.05) brightness(.5)}
.article .hero2 .veil{position:absolute;inset:0;background:linear-gradient(0deg,rgba(0,0,0,.95),rgba(0,0,0,.35))}
.article .hero2 .inner{position:relative;padding:60px 0 44px}
.article .hero2 h1{font-size:clamp(30px,5vw,60px);max-width:20ch;margin-top:12px}
.prose{max-width:760px}
.prose h2{font-size:26px;margin:44px 0 12px}
.prose p{color:#e8e8e8;font-size:16.5px;margin-bottom:16px;line-height:1.7}
.prose .layers{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 8px}
.prose .chip{font-size:12px;letter-spacing:.04em;color:#ddd;border:1px solid var(--line2);border-radius:20px;padding:4px 12px}
.prose .stat{border-left:2px solid #fff;padding:6px 0 6px 20px;margin:26px 0;font-size:22px;font-weight:700;color:#fff}

/* ---- 30-case-study additions ---- */
.hbg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05) brightness(.5);z-index:0}
.hero .inner,.hero2 .inner{position:relative;z-index:2}
.hero .veil,.hero2 .veil{z-index:1}
.sec-group{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:#fff;margin:44px 0 16px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.sec-group:first-of-type{margin-top:40px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:20px}
.cards .case .im{height:180px;overflow:hidden}
.case .im img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05) brightness(.72);transition:.25s}
.case:hover .im img{filter:grayscale(1) contrast(1.05) brightness(.85);transform:scale(1.03)}
.case h3{font-size:18px;margin:8px 0}
.case p{font-size:13px;color:var(--dim);line-height:1.5}
@media(max-width:980px){.cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.cards{grid-template-columns:1fr}}
/* structured case body (no prose) */
.cs{max-width:840px}
.cs-lead{font-size:clamp(20px,2.4vw,30px);font-weight:700;line-height:1.28;color:#fff;margin-bottom:10px}
.cs-block{border-top:1px solid var(--line);padding:18px 0;display:grid;grid-template-columns:160px 1fr;gap:16px;align-items:start}
.cs-lab{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#a8a8a8;font-weight:700}
.cs-tell{font-size:17px;color:#fff;line-height:1.5}
.cs-run{margin-top:24px;color:#dcdcdc;font-size:14px;border-top:1px solid var(--line);padding-top:18px}
.cs-run a{color:#fff;text-decoration:underline;font-weight:700}
.layers{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:12px;letter-spacing:.03em;color:#fff;border:1px solid #565656;border-radius:20px;padding:5px 13px}
@media(max-width:640px){.cs-block{grid-template-columns:1fr;gap:6px}}

/* ---- deep build: domain pages, linked cells, pull-quote ---- */
a.cell{display:block;transition:.16s}
a.cell:hover{background:#0e0e0e}
a.cell .go{margin-top:14px;font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:#fff;opacity:.85}
.grid.g3 .cell{min-height:190px}
.dom-p{color:#e6e6e6;font-size:17px;line-height:1.72;margin-bottom:16px;max-width:72ch}
.dom-h{font-size:23px;color:#fff;margin:40px 0 14px;letter-spacing:-.01em}
.see-list{display:grid;grid-template-columns:1fr 1fr;gap:11px 28px;margin:8px 0 4px}
.see-list div{color:#e6e6e6;font-size:15px;line-height:1.5;padding-left:20px;position:relative}
.see-list div:before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;background:#fff;border-radius:50%}
@media(max-width:640px){.see-list{grid-template-columns:1fr}}
.stat{border-left:2px solid #fff;padding:8px 0 8px 20px;margin:26px 0;font-size:20px;font-weight:700;color:#fff;line-height:1.35;max-width:60ch}
.article section + section{border-top:1px solid var(--line)}

/* ---- brand logo mark ---- */
.brand{display:inline-flex;align-items:center;gap:9px}
.brand-mark{height:26px;width:26px;display:block;flex:none}
footer .brand .brand-mark{height:24px;width:24px}