:root{
  --bg:#071019;
  --bg2:#0a1824;
  --panel:#0d1d2a;
  --panel2:#102331;
  --line:#15384f;
  --cyan:#20bfff;
  --cyan2:#7edcff;
  --text:#f5f8fb;
  --muted:#a7b4bf;
  --max:1320px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
}
a{color:inherit;text-decoration:none}
.wrap{
  width:min(var(--max),calc(100% - 120px));
  margin:0 auto;
}

/* header */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(3,8,12,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(31,73,99,.42);
}
.nav{
  min-height:82px;
  display:flex;align-items:center;justify-content:space-between;
  gap:28px;
}
.brand{
  display:flex;flex-direction:column;
  line-height:1;
  min-width:175px;
}
.brand-main{
  font-size:1.35rem;
  font-weight:900;
  letter-spacing:.045em;
}
.brand-main span{color:var(--cyan)}
.brand-sub{
  margin-top:6px;
  font-size:.72rem;
  color:#d0d8de;
  letter-spacing:.18em;
  font-weight:650;
}
.menu{
  display:flex;gap:30px;align-items:center;
  color:#d6dde3;font-size:.93rem;
}
.menu a{
  padding:31px 0 27px;
  position:relative;
}
.menu a:after{
  content:"";
  position:absolute;left:0;right:0;bottom:19px;
  height:2px;background:var(--cyan);
  transform:scaleX(0);transform-origin:left;
  transition:.18s ease;
}
.menu a:hover:after{transform:scaleX(1)}
.header-cta{
  border:1px solid #0f75a2;
  border-radius:5px;
  padding:11px 17px;
  color:#73d6ff;
  font-weight:800;
}
.menu-btn{
  display:none;
  background:transparent;color:#fff;
  border:1px solid #2a4b60;
  border-radius:6px;
  padding:9px 12px;
}

/* hero */
.hero{
  position:relative;
  min-height:760px;
  display:flex;
  align-items:center;
  overflow:hidden;
  border-bottom:1px solid #123247;
}
.hero-bg{
  position:absolute;inset:0;
  background:url("assets/hero-bg.jpg") 72% center/cover no-repeat;
  transform:scale(1.01);
}
.hero-shade{
  position:absolute;inset:0;
  background:
    radial-gradient(circle at 76% 26%, rgba(32,191,255,.13), transparent 28%),
    linear-gradient(90deg,
      rgba(4,10,15,.93) 0%,
      rgba(4,10,15,.86) 22%,
      rgba(4,10,15,.58) 40%,
      rgba(4,10,15,.22) 60%,
      rgba(4,10,15,.06) 100%),
    linear-gradient(180deg,
      rgba(4,10,15,.03),
      rgba(4,10,15,.16) 58%,
      rgba(4,10,15,.58) 100%);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:minmax(0,.84fr) minmax(0,1.16fr);
  gap:70px;
  align-items:center;
  padding:110px 0 96px;
}
.hero-copy{
  max-width:610px;
  padding-left:18px;
}
.eyebrow{
  color:var(--cyan2);
  font-size:.79rem;
  font-weight:900;
  letter-spacing:.14em;
  text-transform:uppercase;
}
h1{
  margin:.18em 0 .30em;
  font-size:clamp(3rem,5.9vw,5.25rem);
  line-height:.99;
  letter-spacing:-.047em;
}
h1 span{color:var(--cyan)}
.lead{
  max-width:580px;
  color:#c2ced7;
  font-size:1.10rem;
}
.actions{
  margin-top:28px;
  display:flex;gap:12px;flex-wrap:wrap;
}
.btn{
  display:inline-flex;align-items:center;
  padding:13px 19px;
  border-radius:5px;
  background:var(--cyan);
  color:#051019;
  border:1px solid var(--cyan);
  font-weight:850;
}
.btn.alt{
  color:#fff;
  background:rgba(4,10,15,.30);
  border-color:#607381;
}
.quick{
  margin-top:34px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}
.quick-item{
  display:grid;
  grid-template-columns:31px 1fr;
  gap:10px;
}
.quick-icon{
  width:29px;height:29px;
  border:1px solid #20bfff;
  border-radius:50%;
  display:grid;place-items:center;
  color:var(--cyan2);
  font-size:.70rem;
  font-weight:900;
}
.quick-item b{font-size:.86rem}
.quick-item small{
  display:block;
  color:#97a7b3;
  font-size:.76rem;
  margin-top:2px;
}

/* right engineering overlay */
.engineering-panel{
  width:min(570px,100%);
  margin:300px 44px 0 auto;
  background:rgba(4,14,22,.84);
  border:1px solid #149bd2;
  border-radius:7px;
  overflow:hidden;
  backdrop-filter:blur(10px);
  box-shadow:0 26px 80px rgba(0,0,0,.34);
}
.panel-top{
  min-height:42px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 15px;
  border-bottom:1px solid #17394d;
  color:#8da1b0;
  font:700 11px/1 ui-monospace,SFMono-Regular,Menlo,monospace;
}
.panel-body{
  display:grid;
  grid-template-columns:1.12fr .88fr;
}
.code{
  padding:20px 22px;
  border-right:1px solid #17394d;
  font:12px/1.82 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.code .num{display:inline-block;width:27px;color:#546b7c}
.c1{color:#75aaff}.c2{color:#db81c9}.c3{color:#8ed2aa}.c4{color:#ccd8e0}
.panel-services{padding:17px}
.service-mini{
  display:grid;
  grid-template-columns:29px 1fr;
  gap:10px;
  padding:9px 0;
  border-bottom:1px solid rgba(30,65,87,.62);
}
.service-mini:last-child{border-bottom:0}
.service-mini i{
  width:27px;height:27px;
  border:1px solid #149bd2;
  border-radius:5px;
  display:grid;place-items:center;
  color:var(--cyan2);
  font-style:normal;
  font-size:.66rem;
}
.service-mini b{display:block;font-size:.78rem}
.service-mini small{font-size:.68rem;color:#88a9ba}

/* sections */
.section{padding:92px 0}
.section.dark{
  background:#0a1823;
  border-top:1px solid #102f43;
  border-bottom:1px solid #102f43;
}
.section.deep{background:#071019}
.section-head{
  display:flex;
  justify-content:space-between;
  gap:54px;
  align-items:end;
  margin-bottom:40px;
}
.section-head h2{
  margin:0;
  font-size:clamp(2.2rem,4vw,3.55rem);
  line-height:1.06;
  letter-spacing:-.04em;
}
.section-head p{
  margin:0;
  max-width:590px;
  color:var(--muted);
}
.small-label{
  margin-bottom:10px;
  color:var(--cyan);
  font-size:.76rem;
  font-weight:900;
  letter-spacing:.13em;
  text-transform:uppercase;
}

/* service cards */
.services{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border:1px solid #173a50;
  border-radius:7px;
  overflow:hidden;
}
.service-card{
  padding:30px 25px;
  min-height:250px;
  background:linear-gradient(180deg,#0b1822,#07141d);
  border-right:1px solid #173a50;
}
.service-card:nth-child(3n){border-right:0}
.service-card:nth-child(n+4){border-top:1px solid #173a50}
.service-icon{
  width:44px;height:44px;
  border:1px solid #149bd2;
  border-radius:50%;
  display:grid;place-items:center;
  color:var(--cyan2);
  font:800 12px/1 ui-monospace,monospace;
  margin-bottom:26px;
}
.service-card h3{margin:0 0 10px;font-size:1.03rem}
.service-card p{margin:0;color:#9eacb7;font-size:.89rem}

/* approach */
.approach{
  display:grid;
  grid-template-columns:.88fr 1.12fr;
  gap:64px;
  align-items:start;
}
.code-window{
  margin-top:28px;
  border:1px solid #173d54;
  border-radius:7px;
  overflow:hidden;
  background:#061018;
}
.code-title{
  height:42px;
  display:flex;align-items:center;
  padding:0 15px;
  border-bottom:1px solid #17374b;
  color:#7893a4;
  font:700 11px/1 ui-monospace,monospace;
}
.code-content{
  padding:24px;
  font:13px/1.88 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.steps{border-top:1px solid #1b3d52}
.step{
  display:grid;
  grid-template-columns:72px 1fr;
  gap:18px;
  padding:22px 0;
  border-bottom:1px solid #1b3d52;
}
.step-no{
  padding-top:7px;
  color:#5f7585;
  font:800 12px/1 ui-monospace,monospace;
}
.step p{margin:5px 0 0;color:#9eacb7}

/* company/contact */
.company{
  display:grid;
  grid-template-columns:.84fr 1.16fr;
  gap:68px;
  align-items:start;
}
.company-card{
  border:1px solid #17394e;
  border-radius:7px;
  background:#081620;
  padding:30px;
}
.company-card h2{
  margin:8px 0 12px;
  font-size:2.25rem;
  line-height:1.04;
}
.company-card p{color:#9eadb8}
.company dl{
  margin:0;
  display:grid;
  grid-template-columns:170px 1fr;
  gap:14px 20px;
}
.company dt{color:#768d9d}
.company dd{margin:0;font-weight:700;color:#e6edf2}
.company dd a{color:#6dd2fb}

.contact{
  display:grid;
  grid-template-columns:1fr .82fr;
  gap:68px;
  align-items:center;
}
.contact-box{
  border:1px solid #174865;
  border-radius:7px;
  background:linear-gradient(135deg,#081722,#0a2232);
  padding:30px;
}
.contact-box p{color:#9eafb9}
.contact-links{display:grid;gap:10px;margin-top:18px}
.contact-link{
  border:1px solid #1b4b68;
  border-radius:5px;
  padding:13px 15px;
}
.contact-link b{color:var(--cyan2)}

.legal{max-width:850px;color:#91a1ac;font-size:.90rem}

/* footer */
footer{
  padding:31px 0;
  background:#020609;
  border-top:1px solid #173247;
  color:#748998;
  font-size:.87rem;
}
.footer-row{
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-links{display:flex;gap:18px}

/* responsive */
@media(max-width:1080px){
  .wrap{width:min(var(--max),calc(100% - 54px))}
  .menu{display:none}
  .header-cta{display:none}
  .menu-btn{display:block}
  .menu.open{
    display:flex;
    position:absolute;
    top:82px;left:27px;right:27px;
    flex-direction:column;align-items:flex-start;gap:10px;
    padding:18px;
    background:#07131d;
    border:1px solid #173d55;
    border-radius:7px;
  }
  .menu.open a{padding:7px 0}
  .menu.open a:after{display:none}
  .hero-grid,.approach,.company,.contact{grid-template-columns:1fr}
  .engineering-panel{margin:40px 0 0}
  .services{grid-template-columns:1fr 1fr}
}
@media(max-width:700px){
  .wrap{width:min(var(--max),calc(100% - 30px))}
  .hero{min-height:auto}
  .hero-grid{padding:82px 0 74px}
  .quick{grid-template-columns:1fr}
  .panel-body{grid-template-columns:1fr}
  .code{border-right:0;border-bottom:1px solid #17394d}
  .services{grid-template-columns:1fr}
  .service-card{border-right:0;border-bottom:1px solid #173a50}
  .section-head{display:block}
  .section-head p{margin-top:15px}
  .company dl{grid-template-columns:1fr}
}


/* v1.3 AI visual enhancement */
.hero-bg{
  filter:saturate(1.08) brightness(1.03);
}
.hero-shade{
  background:
    radial-gradient(circle at 76% 26%, rgba(32,191,255,.18), transparent 28%),
    linear-gradient(90deg,
      rgba(4,10,15,.90) 0%,
      rgba(4,10,15,.83) 22%,
      rgba(4,10,15,.52) 40%,
      rgba(4,10,15,.18) 60%,
      rgba(4,10,15,.04) 100%),
    linear-gradient(180deg,
      rgba(4,10,15,.02),
      rgba(4,10,15,.12) 58%,
      rgba(4,10,15,.54) 100%);
}
h1 span,
.small-label,
.eyebrow{
  text-shadow:0 0 18px rgba(32,191,255,.16);
}
@media(max-width:980px){
  .services{grid-template-columns:1fr 1fr}
  .service-card:nth-child(3n){border-right:1px solid #173a50}
  .service-card:nth-child(2n){border-right:0}
  .service-card:nth-child(n+3){border-top:1px solid #173a50}
}
@media(max-width:680px){
  .services{grid-template-columns:1fr}
  .service-card{border-right:0!important;border-top:1px solid #173a50}
  .service-card:first-child{border-top:0}
}