:root{
  --bg:#080b0e;
  --bg2:#0d1115;
  --panel:#11171c;
  --panel2:#151c22;
  --line:rgba(219,226,232,.15);
  --line-strong:rgba(230,235,239,.28);
  --text:#e9edf0;
  --muted:#9ba6ad;
  --soft:#c6cdd2;
  --silver:#d7dce0;
  --accent:#f1f3f4;
  --warm:#c7a06b;
  --max:1440px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,"Helvetica Neue",Arial,sans-serif;font-weight:300;line-height:1.55;letter-spacing:.005em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select{font:inherit}
::selection{background:#dce1e5;color:#0a0c0f}

/* subtle industrial field */
body:before{content:"";position:fixed;inset:0;pointer-events:none;z-index:100;background-image:linear-gradient(rgba(255,255,255,.015) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.012) 1px,transparent 1px);background-size:52px 52px;mask-image:linear-gradient(to bottom,rgba(0,0,0,.35),transparent 75%)}

.shell{width:min(var(--max),calc(100% - 56px));margin:0 auto}
.eyebrow{font-size:11px;line-height:1.2;text-transform:uppercase;letter-spacing:.32em;color:#a7b0b6;font-weight:500}
.display{font-family:"Arial Narrow",Inter,"Helvetica Neue",Arial,sans-serif;text-transform:uppercase;letter-spacing:.12em;font-weight:500;line-height:.95}
.muted{color:var(--muted)}
.rule{height:1px;background:var(--line)}

.site-header{position:sticky;top:0;z-index:80;background:rgba(8,11,14,.88);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav{height:78px;display:flex;align-items:center;justify-content:space-between;gap:30px}
.brand{display:flex;align-items:center;gap:15px;min-width:270px}
.brand img{width:34px;height:34px;object-fit:contain;filter:invert(1) brightness(1.6)}
.brand-word{font-family:"Arial Narrow",Inter,"Helvetica Neue",Arial,sans-serif;font-size:22px;font-weight:600;letter-spacing:.24em;line-height:1;color:#f4f6f7}
.brand-sub{margin-top:5px;font-size:7px;letter-spacing:.20em;color:#aab3b9;text-transform:uppercase;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:34px;font-size:12px;color:#c2c9ce}
.nav-links a{padding:30px 0 27px;border-bottom:1px solid transparent;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:white;border-bottom-color:#dbe0e3}
.nav-actions{display:flex;align-items:center;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:44px;padding:0 20px;border:1px solid var(--line-strong);background:transparent;color:#e9edef;font-size:12px;letter-spacing:.03em;border-radius:2px;transition:.2s ease;cursor:pointer}
.btn:hover{background:#e6eaed;color:#0c1013;border-color:#e6eaed;transform:translateY(-1px)}
.btn.primary{background:#e8ebed;color:#0b0e10;border-color:#e8ebed}
.btn.primary:hover{background:white;border-color:white}
.mobile-toggle{display:none;background:none;border:0;color:white;font-size:24px;padding:8px}

/* HERO */
.hero{position:relative;min-height:760px;overflow:hidden;border-bottom:1px solid var(--line);background:#070a0d}
.hero-media{position:absolute;inset:0;background-image:linear-gradient(90deg,rgba(6,9,12,.97) 0%,rgba(7,10,13,.9) 35%,rgba(7,10,13,.34) 66%,rgba(7,10,13,.7) 100%),linear-gradient(0deg,rgba(7,10,13,1) 0%,rgba(7,10,13,0) 36%),url('assets/refinery-hero.jpg');background-size:cover;background-position:center 48%;filter:saturate(.8) contrast(1.08)}
.hero-globe{position:absolute;right:7%;top:50%;width:min(660px,48vw);aspect-ratio:1;border-radius:50%;transform:translateY(-49%);background:url('assets/globe-industrial.jpg') center/cover;opacity:.72;mix-blend-mode:screen;filter:grayscale(.2) contrast(1.18);mask-image:radial-gradient(circle at center,black 45%,transparent 74%)}
.hero:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 71% 43%,rgba(255,255,255,.06),transparent 30%);pointer-events:none}
.hero-inner{position:relative;z-index:3;min-height:760px;display:flex;align-items:center;padding:120px 0 110px}
.hero-copy{max-width:650px}
.hero h1{font-size:clamp(52px,6.1vw,92px);margin:24px 0 24px;max-width:900px}
.hero p{font-size:16px;max-width:630px;color:#c0c8cd;margin:0 0 28px}
.hero-proof{font-size:11px!important;letter-spacing:.17em;text-transform:uppercase;color:#aab4bb!important;border-left:1px solid #aab4bb;padding-left:15px;margin-top:28px!important}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
.hero-sidecopy{position:absolute;right:1%;top:195px;width:165px;border-left:1px solid var(--line-strong);padding-left:22px;color:#b9c1c6;font-size:10px;text-transform:uppercase;letter-spacing:.26em;line-height:1.8}

.signal-strip{position:relative;z-index:5;margin-top:-1px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(9,12,15,.91)}
.signal-strip .shell{display:grid;grid-template-columns:repeat(4,1fr)}
.strip-item{padding:25px 28px;border-right:1px solid var(--line);min-height:96px;display:flex;gap:15px;align-items:flex-start}
.strip-item:first-child{border-left:1px solid var(--line)}
.strip-icon{width:26px;height:26px;border:1px solid var(--line-strong);display:grid;place-items:center;font-size:10px;color:#e5e9ec}
.strip-item strong{display:block;font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:.12em;margin-bottom:6px}
.strip-item span{font-size:11px;color:#87939b}

.section{padding:110px 0;border-bottom:1px solid var(--line)}
.section.dark2{background:var(--bg2)}
.section-head{display:grid;grid-template-columns:1.2fr .8fr;gap:70px;align-items:end;margin-bottom:50px}
.section h2{font-size:clamp(36px,4vw,64px);margin:14px 0 0}
.section-intro{color:#a5afb6;font-size:15px;max-width:520px;justify-self:end}

.steps{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.step{min-height:315px;padding:38px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(145deg,rgba(255,255,255,.018),transparent 45%);position:relative;overflow:hidden}
.step-num{font-family:"Arial Narrow",Inter,"Helvetica Neue",Arial,sans-serif;font-size:12px;letter-spacing:.22em;color:#7f8a91;margin-bottom:75px}
.step h3{font-family:"Arial Narrow",Inter,"Helvetica Neue",Arial,sans-serif;font-weight:500;text-transform:uppercase;letter-spacing:.12em;font-size:26px;margin:0 0 15px}
.step p{color:#8f9aa1;font-size:13px;max-width:340px}
.step:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:#dce1e4;transition:.35s}
.step:hover:after{width:100%}

.signal-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.signal-card{position:relative;min-height:420px;border:1px solid var(--line);overflow:hidden;background:#10151a}
.signal-card .image{position:absolute;inset:0;background-size:cover;background-position:center;filter:saturate(.65) contrast(1.1);transition:transform .6s ease}
.signal-card:nth-child(1) .image{background-image:url('assets/refinery-wide.jpg')}
.signal-card:nth-child(2) .image{background-image:url('assets/refinery-hero.jpg');background-position:center 64%}
.signal-card:nth-child(3) .image{background-image:url('assets/globe-industrial.jpg')}
.signal-card:nth-child(4) .image{background-image:url('assets/refinery-wide.jpg');background-position:70% center}
.signal-card:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(6,9,12,.98),rgba(6,9,12,.12) 72%)}
.signal-card:hover .image{transform:scale(1.025)}
.signal-card .content{position:absolute;z-index:2;left:30px;right:30px;bottom:28px}
.signal-card h3{font-family:"Arial Narrow",Inter,"Helvetica Neue",Arial,sans-serif;text-transform:uppercase;letter-spacing:.1em;font-size:28px;font-weight:500;margin:10px 0 8px}
.signal-card p{max-width:480px;color:#a5afb5;font-size:13px;margin:0}

/* sample intelligence */
.intel-shell{display:grid;grid-template-columns:250px 1fr;min-height:770px;border:1px solid var(--line);background:#0b0f12}
.filters{border-right:1px solid var(--line);padding:25px 22px;background:#0d1115}
.filter-title{font-size:10px;letter-spacing:.2em;text-transform:uppercase;margin-bottom:20px;color:#cfd5d8}
.filter-block{padding:18px 0;border-top:1px solid var(--line)}
.filter-label{font-size:9px;text-transform:uppercase;letter-spacing:.22em;color:#839099;margin-bottom:11px}
.filter-chip{display:inline-block;border:1px solid var(--line);padding:6px 9px;margin:0 5px 6px 0;font-size:9px;color:#a8b1b7;background:#10161a}
.intel-main{padding:24px}
.intel-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:18px}
.intel-tabs{display:flex;gap:8px;flex-wrap:wrap}
.intel-tab{border:1px solid var(--line);padding:8px 12px;font-size:9px;letter-spacing:.07em;color:#aeb7bc}
.intel-tab.active{background:#e2e6e8;color:#0b0e11}
.intel-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.intel-card{border:1px solid var(--line);background:#10161a;min-height:230px;padding:20px;position:relative;overflow:hidden}
.intel-card .card-photo{height:92px;margin:-20px -20px 17px;background:url('assets/refinery-wide.jpg') center/cover;filter:saturate(.6);position:relative}
.intel-card .card-photo:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,#10161a 0%,transparent 80%)}
.status{display:inline-flex;align-items:center;gap:7px;font-size:8px;letter-spacing:.12em;text-transform:uppercase;color:#b9c1c6}
.dot{width:6px;height:6px;border-radius:50%;background:#c6d1c8}
.intel-card h4{font-family:"Arial Narrow",Inter,"Helvetica Neue",Arial,sans-serif;text-transform:uppercase;letter-spacing:.06em;font-size:21px;font-weight:500;margin:8px 0}
.intel-card p{font-size:11px;color:#8f9aa1;margin:0 0 14px}
.tags{display:flex;gap:6px;flex-wrap:wrap}
.tag{font-size:8px;border:1px solid var(--line);padding:4px 7px;color:#96a2aa}
.demo-note{border:1px solid var(--line);padding:10px 13px;font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:#9ba5ab;background:#0f1418}

/* product detail */
.detail-hero{position:relative;min-height:420px;background:linear-gradient(90deg,rgba(7,10,13,.96),rgba(7,10,13,.42)),url('assets/refinery-hero.jpg') center/cover;border-bottom:1px solid var(--line)}
.detail-inner{padding:120px 0 62px}
.detail-title{font-family:"Arial Narrow",Inter,"Helvetica Neue",Arial,sans-serif;text-transform:uppercase;letter-spacing:.08em;font-weight:500;font-size:clamp(42px,5vw,72px);margin:14px 0 15px}
.detail-meta{display:flex;gap:24px;flex-wrap:wrap;color:#b5bec4;font-size:12px}
.detail-grid{display:grid;grid-template-columns:1.5fr .75fr;gap:14px;margin-top:-52px;position:relative;z-index:4;padding-bottom:100px}
.detail-panel{border:1px solid var(--line);background:rgba(12,17,21,.96);padding:28px}
.detail-panel h3{font-family:"Arial Narrow",Inter,"Helvetica Neue",Arial,sans-serif;text-transform:uppercase;letter-spacing:.1em;font-weight:500;font-size:23px;margin:8px 0 15px}
.kv{display:grid;grid-template-columns:145px 1fr;border-top:1px solid var(--line);font-size:12px}
.kv div{padding:12px 0;border-bottom:1px solid var(--line)}
.kv div:nth-child(odd){color:#7e8b94;text-transform:uppercase;font-size:9px;letter-spacing:.12em}

/* Pilot */
.price-panel{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);background:#0d1115}
.price-copy{padding:60px}
.price{font-family:"Arial Narrow",Inter,"Helvetica Neue",Arial,sans-serif;font-size:72px;letter-spacing:.03em;margin:22px 0 0}
.price span{font-size:18px;color:#85919a}
.pilot-list{padding:60px;border-left:1px solid var(--line);background:linear-gradient(135deg,#12181d,#0c1014)}
.pilot-list ul{list-style:none;padding:0;margin:30px 0 0}
.pilot-list li{padding:13px 0;border-top:1px solid var(--line);font-size:13px;color:#aeb7bd}

/* About */
.mission{font-family:"Arial Narrow",Inter,"Helvetica Neue",Arial,sans-serif;text-transform:uppercase;letter-spacing:.1em;font-size:clamp(44px,6vw,90px);line-height:.96;max-width:1100px;margin:0}

footer{padding:48px 0 60px;background:#07090b}
.footer-grid{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:end}
.footer-brand{max-width:380px}
.footer-brand .brand{margin-bottom:18px}
.footer-copy{font-size:11px;color:#76838b}
.footer-links{display:flex;gap:24px;font-size:10px;text-transform:uppercase;letter-spacing:.13em;color:#8f9ba3;flex-wrap:wrap;justify-content:flex-end}

/* responsive */
@media(max-width:980px){
  .shell{width:min(100% - 34px,var(--max))}
  .nav-links{display:none;position:absolute;top:78px;left:0;right:0;background:#080b0e;border-bottom:1px solid var(--line);padding:14px 24px;flex-direction:column;align-items:flex-start;gap:0}
  .nav-links.open{display:flex}
  .nav-links a{width:100%;padding:14px 0}
  .nav-actions .btn{display:none}
  .mobile-toggle{display:block}
  .brand{min-width:0}
  .hero{min-height:690px}.hero-inner{min-height:690px;padding-top:105px}.hero-globe{right:-20%;width:75vw;opacity:.42}.hero-sidecopy{display:none}.hero-copy{max-width:620px}
  .signal-strip .shell{grid-template-columns:repeat(2,1fr)}.strip-item:nth-child(3){border-left:1px solid var(--line)}
  .section-head{grid-template-columns:1fr;gap:20px}.section-intro{justify-self:start}.steps{grid-template-columns:1fr}.signal-grid{grid-template-columns:1fr}
  .intel-shell{grid-template-columns:1fr}.filters{display:none}.intel-cards{grid-template-columns:1fr}
  .detail-grid{grid-template-columns:1fr;margin-top:-28px}.price-panel{grid-template-columns:1fr}.pilot-list{border-left:0;border-top:1px solid var(--line)}
}
@media(max-width:620px){
  .shell{width:calc(100% - 28px)}.nav{height:68px}.brand-word{font-size:18px}.brand-sub{font-size:6px}.brand img{width:29px;height:29px}.nav-links{top:68px}
  .hero{min-height:720px}.hero-inner{min-height:720px;padding:92px 0 70px}.hero h1{font-size:48px;letter-spacing:.08em}.hero p{font-size:14px}.hero-globe{width:105vw;right:-55%;top:46%}
  .signal-strip .shell{grid-template-columns:1fr}.strip-item,.strip-item:nth-child(3){border-left:1px solid var(--line)}
  .section{padding:80px 0}.section h2{font-size:42px}.signal-card{min-height:360px}.step{min-height:280px;padding:28px}.step-num{margin-bottom:52px}
  .intel-main{padding:14px}.intel-toolbar{align-items:flex-start;flex-direction:column}.detail-inner{padding-top:95px}.detail-panel{padding:22px}.kv{grid-template-columns:1fr}.kv div:nth-child(odd){padding-bottom:2px;border-bottom:0}.kv div:nth-child(even){padding-top:4px}
  .price-copy,.pilot-list{padding:34px}.price{font-size:60px}.footer-grid{grid-template-columns:1fr}.footer-links{justify-content:flex-start}
}