:root{
  --navy:#0B1F3A;
  --steel:#5E6875;
  --bg:#08121F;
  --surface:#122235;
  --text:#FFFFFF;
  --text-2:#D3D8DD;
  --orange:#F97316;
  --success:#2BAE66;

  --font-head:'Plus Jakarta Sans', sans-serif;
  --font-body:'Inter', sans-serif;

  --container:1320px;
  --radius:12px;
  --ease:cubic-bezier(.25,.8,.35,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){*{animation-duration:.001ms !important; transition-duration:.001ms !important;}}

body{margin:0; background:var(--bg); color:var(--text); font-family:var(--font-body); line-height:1.65; -webkit-font-smoothing:antialiased;}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
ul{list-style:none; margin:0; padding:0;}
.container{max-width:var(--container); margin:0 auto; padding:0 32px;}

h1,h2,h3,h4{font-family:var(--font-head); font-weight:700; line-height:1.18; margin:0 0 .5em; letter-spacing:-.01em;}
h1{font-size:clamp(2.1rem,3.6vw,3rem);}
h2{font-size:clamp(1.7rem,2.6vw,2.2rem);}
h3{font-size:1.2rem;}
p{color:var(--text-2); max-width:62ch;}
.lede{font-size:1.08rem; color:var(--text-2);}

.eyebrow{font-family:var(--font-body); font-weight:600; font-size:.78rem; letter-spacing:.12em; text-transform:uppercase; color:var(--orange); margin-bottom:12px; display:flex; align-items:center; gap:10px;}
.eyebrow::before{content:''; width:22px; height:2px; background:var(--orange); display:inline-block; border-radius:2px;}

.btn{display:inline-flex; align-items:center; gap:8px; padding:14px 26px; border-radius:10px; font-weight:600; font-size:.94rem; cursor:pointer; border:1px solid transparent; transition:transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);}
.btn-primary{background:var(--orange); color:#0a0f16; box-shadow:0 6px 18px -6px rgba(249,115,22,.4);}
.btn-primary:hover{transform:translateY(-2px); box-shadow:0 10px 26px -6px rgba(249,115,22,.55);}
.btn-ghost{background:transparent; border-color:rgba(255,255,255,.28); color:var(--text);}
.btn-ghost:hover{border-color:var(--orange); transform:translateY(-2px);}

/* nav */
.site-nav{position:fixed; top:0; left:0; right:0; z-index:100; padding:22px 0; border-bottom:1px solid transparent; transition:background .35s var(--ease), padding .35s var(--ease), border-color .35s var(--ease);}
.site-nav.scrolled{background:rgba(8,18,31,.9); backdrop-filter:blur(12px); padding:14px 0; border-bottom-color:rgba(255,255,255,.08);}
.nav-inner{display:flex; align-items:center; justify-content:space-between;}
.brand{font-family:var(--font-head); font-weight:700; font-size:1.15rem; display:flex; align-items:center; gap:10px;}
.brand .mark{width:32px;height:32px;border-radius:8px; background:var(--orange); display:flex;align-items:center;justify-content:center; color:#0a0f16; font-weight:800;}
.brand small{display:block; font-size:.58rem; letter-spacing:.1em; color:var(--text-2); font-weight:500;}
.nav-links{display:flex; gap:28px; font-size:.9rem; font-weight:500;}
.nav-links a{color:var(--text-2); position:relative; transition:color .25s;}
.nav-links a:hover,.nav-links a.active{color:var(--text);}
.nav-links a.active::after{content:'';position:absolute; left:0; bottom:-6px; width:100%; height:2px; background:var(--orange); border-radius:2px;}
.nav-cta{display:flex; align-items:center; gap:20px;}
.nav-toggle{display:none; background:none; border:none; color:var(--text); font-size:1.4rem; cursor:pointer;}
@media (max-width:920px){
  .nav-links{position:fixed; inset:0 0 0 auto; width:78%; max-width:320px; background:var(--navy); flex-direction:column; padding:100px 32px 40px; transform:translateX(100%); transition:transform .4s var(--ease); border-left:1px solid rgba(255,255,255,.08);}
  .nav-links.open{transform:translateX(0);}
  .nav-toggle{display:block;}
  .nav-cta .btn-primary{padding:11px 16px; font-size:.82rem;}
}

/* blueprint texture */
.blueprint-grid{position:absolute; inset:0; z-index:0; pointer-events:none; opacity:.5;
  background-image:linear-gradient(rgba(94,104,117,.14) 1px, transparent 1px), linear-gradient(90deg, rgba(94,104,117,.14) 1px, transparent 1px);
  background-size:42px 42px;
  mask-image:radial-gradient(ellipse at center, black 0%, transparent 78%);
}

/* hero */
.hero{position:relative; padding:150px 0 90px; overflow:hidden; background:linear-gradient(180deg, var(--navy), var(--bg) 65%);}
.hero-grid{position:relative; z-index:2; display:grid; grid-template-columns:1.1fr .9fr; gap:56px; align-items:center;}
.hero-copy h1{margin-bottom:20px;}
.hero-copy h1 .accent{color:var(--orange);}
.hero-actions{display:flex; gap:14px; flex-wrap:wrap; margin:30px 0 26px;}
.hero-tag{font-size:.84rem; color:var(--text-2); display:flex; align-items:center; gap:10px;}
.hero-tag strong{color:var(--text); font-weight:600;}
.hero-tag .dot{width:6px;height:6px;border-radius:50%; background:var(--orange);}
.hero-visual{position:relative; aspect-ratio:1/1; max-width:440px; margin:0 auto;}
@media (max-width:920px){.hero-grid{grid-template-columns:1fr;} .hero-visual{order:-1; max-width:300px;}}

/* node diagram - subtle rotation only */
.node-svg{width:100%; height:100%; animation:node-rotate 12s ease-in-out infinite;}
@keyframes node-rotate{0%,100%{transform:rotate(-1deg);} 50%{transform:rotate(1deg);}}

section{position:relative; padding:110px 0;}
.section-alt{background:var(--navy);}
.section-head{max-width:680px; margin-bottom:56px;}

.reveal{opacity:0; transform:translateY(20px); transition:opacity .7s var(--ease), transform .7s var(--ease);}
.reveal.in{opacity:1; transform:translateY(0);}

.card{background:var(--surface); border:1px solid rgba(255,255,255,.07); border-radius:var(--radius); padding:30px; transition:transform .35s var(--ease), border-color .35s var(--ease), box-shadow .35s var(--ease);}
.card:hover{transform:translateY(-4px); border-color:rgba(249,115,22,.3); box-shadow:0 20px 40px -22px rgba(0,0,0,.6);}

.split{display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center;}
@media (max-width:880px){.split{grid-template-columns:1fr;}}
.stat-row{display:flex; gap:40px; margin-top:30px; flex-wrap:wrap;}
.stat b{display:block; font-family:var(--font-head); font-size:1.9rem;}
.stat span{font-size:.72rem; letter-spacing:.08em; text-transform:uppercase; color:var(--text-2);}

.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
.grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:20px;}
@media (max-width:980px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}}
@media (max-width:600px){.grid-3,.grid-4{grid-template-columns:1fr;}}

.feat-card .icon{width:42px; height:42px; border-radius:10px; background:rgba(249,115,22,.12); border:1px solid rgba(249,115,22,.28); display:flex; align-items:center; justify-content:center; margin-bottom:18px; color:var(--orange); font-weight:700;}
.feat-card h3{font-size:1.02rem; margin-bottom:8px;}
.feat-card p{font-size:.9rem; margin:0;}

/* process / timeline */
.process-row{display:flex; gap:18px; overflow-x:auto; padding-bottom:10px;}
.process-step{flex:0 0 200px; text-align:center;}
.process-step .p-num{width:38px;height:38px;border-radius:50%;border:2px solid var(--orange); display:flex; align-items:center; justify-content:center; margin:0 auto 14px; font-family:var(--font-head); font-weight:700; color:var(--orange);}
.process-step h3{font-size:.95rem;}
.process-arrow{align-self:center; color:var(--steel); font-size:1.2rem;}

.timeline{position:relative; margin-top:10px; border-left:2px solid rgba(249,115,22,.3); padding-left:34px;}
.t-step{position:relative; margin-bottom:34px;}
.t-step::before{content:''; position:absolute; left:-40.5px; top:4px; width:12px; height:12px; border-radius:50%; background:var(--bg); border:2px solid var(--orange);}
.t-step .t-i{font-size:.72rem; color:var(--orange); letter-spacing:.08em; font-weight:600;}
.t-step h3{margin:4px 0 4px; font-size:1rem;}
.t-step p{margin:0; font-size:.9rem;}

.chip-grid{display:flex; flex-wrap:wrap; gap:12px;}
.chip{padding:11px 18px; border-radius:999px; font-size:.86rem; border:1px solid rgba(255,255,255,.14); color:var(--text-2); transition:all .25s;}
.chip:hover{border-color:var(--orange); color:var(--text);}

.faq-item{border-bottom:1px solid rgba(255,255,255,.09); padding:22px 0;}
.faq-q{display:flex; justify-content:space-between; align-items:center; cursor:pointer; font-family:var(--font-head); font-weight:600; font-size:1rem; gap:16px;}
.faq-q .plus{color:var(--orange); font-size:1.3rem; flex-shrink:0; transition:transform .3s;}
.faq-item.open .plus{transform:rotate(45deg);}
.faq-a{max-height:0; overflow:hidden; transition:max-height .35s var(--ease);}
.faq-item.open .faq-a{max-height:220px;}
.faq-a p{margin:14px 0 0; font-size:.92rem;}

.cta-band{background:var(--navy); border-top:1px solid rgba(255,255,255,.08); border-bottom:1px solid rgba(255,255,255,.08); text-align:center; padding:100px 0;}
.cta-band h2{margin-bottom:24px;}
.cta-band .btn{margin:0 6px;}

footer{background:var(--navy); border-top:2px solid var(--orange); padding:64px 0 28px;}
.footer-grid{display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:36px; margin-bottom:44px;}
@media (max-width:820px){.footer-grid{grid-template-columns:1fr 1fr; row-gap:32px;}}
.footer-grid h4{font-family:var(--font-head); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; color:var(--text-2); margin-bottom:16px;}
.footer-grid li{margin-bottom:9px;}
.footer-grid a{color:var(--text-2); font-size:.9rem; transition:color .25s;}
.footer-grid a:hover{color:var(--orange);}
.footer-bottom{display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; padding-top:22px; border-top:1px solid rgba(255,255,255,.08); font-size:.78rem; color:var(--steel);}

.page-hero{padding:160px 0 80px; background:linear-gradient(180deg, var(--navy), var(--bg)); position:relative; overflow:hidden;}
.page-hero h1{max-width:780px;}

.form-grid{display:grid; grid-template-columns:1fr 1fr; gap:18px;}
@media (max-width:640px){.form-grid{grid-template-columns:1fr;}}
.field{display:flex; flex-direction:column; gap:7px; margin-bottom:18px;}
.field.full{grid-column:1/-1;}
.field label{font-size:.74rem; letter-spacing:.05em; text-transform:uppercase; color:var(--text-2); font-weight:600;}
.field input,.field select,.field textarea{background:rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.14); border-radius:8px; padding:12px 14px; color:var(--text); font-family:var(--font-body); font-size:.93rem;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none; border-color:var(--orange);}
.field textarea{resize:vertical; min-height:100px;}
.check-grid{display:grid; grid-template-columns:1fr 1fr; gap:10px;}
@media (max-width:560px){.check-grid{grid-template-columns:1fr;}}
.check-item{display:flex; align-items:center; gap:8px; font-size:.88rem; color:var(--text-2);}

.contact-card{display:flex; flex-direction:column; gap:22px;}
.info-row{display:flex; gap:14px; align-items:flex-start;}
.info-row .ic{width:38px;height:38px;border-radius:9px; flex-shrink:0; background:rgba(249,115,22,.1); border:1px solid rgba(249,115,22,.25); color:var(--orange); display:flex; align-items:center; justify-content:center; font-size:.85rem;}
.info-row h4{margin:0 0 3px; font-size:.92rem;}
.info-row p{margin:0; font-size:.88rem;}
.map-placeholder{background:var(--surface); border:1px solid rgba(255,255,255,.08); border-radius:var(--radius); aspect-ratio:4/3; display:flex; align-items:center; justify-content:center; color:var(--text-2); font-size:.85rem;}

.badge-row{display:flex; gap:14px; flex-wrap:wrap; margin-top:24px;}
.badge{font-size:.7rem; letter-spacing:.05em; padding:8px 14px; border-radius:7px; border:1px solid rgba(255,255,255,.12); color:var(--text-2);}

/* ===== Technical detail illustrations ===== */
.detail-gallery{display:grid; grid-template-columns:repeat(4,1fr); gap:20px;}
@media (max-width:980px){.detail-gallery{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.detail-gallery{grid-template-columns:1fr;}}
.detail-figure{background:var(--surface); border:1px solid rgba(255,255,255,.08); border-radius:var(--radius); overflow:hidden; transition:border-color .3s, transform .3s;}
.detail-figure:hover{border-color:rgba(249,115,22,.35); transform:translateY(-4px);}
.detail-figure svg{width:100%; height:auto; display:block; background:var(--bg);}
.detail-figure figcaption{padding:14px 16px; font-size:.78rem; letter-spacing:.03em; color:var(--text-2); border-top:1px solid rgba(255,255,255,.06);}
.detail-figure figcaption strong{display:block; color:var(--text); font-size:.86rem; margin-bottom:2px; font-family:var(--font-head);}
.hero-detail svg{width:100%; height:auto;}