:root{
  --navy:#0d1b2a;
  --navy-2:#13273a;
  --slate:#1b2a3a;
  --steel:#e8edf2;
  --paper:#f6f8fa;
  --ink:#0f1a24;
  --ink-soft:#4a5a68;
  --accent:#2f7d72;
  --accent-2:#3a9c8e;
  --accent-soft:#e4f1ee;
  --line:#dbe3ea;
  --shadow:0 30px 70px -42px rgba(13,27,42,.55);
  --shadow-sm:0 16px 38px -28px rgba(13,27,42,.5);
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --mono:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.62;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 26px}
.eyebrow{font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);font-weight:700}
.lede{font-size:1.1rem;color:var(--ink-soft);max-width:56ch}
h1,h2,h3{letter-spacing:-.02em;line-height:1.1}

header.nav{position:sticky;top:0;z-index:50;background:rgba(246,248,250,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.2rem;letter-spacing:-.02em}
.brand .mark{width:30px;height:30px}
.nav-links{display:flex;gap:30px;align-items:center;font-size:.9rem;font-weight:500}
.nav-links a{color:var(--ink-soft);transition:color .2s}
.nav-links a:hover{color:var(--accent)}
.btn{display:inline-flex;align-items:center;gap:8px;font-size:.9rem;font-weight:600;padding:12px 22px;border-radius:8px;border:1px solid var(--accent);background:var(--accent);color:#fff;cursor:pointer;transition:.22s}
.btn:hover{background:var(--accent-2);border-color:var(--accent-2);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--accent);border-color:var(--line)}
.btn.ghost:hover{background:var(--accent-soft);color:var(--accent);transform:none}
.btn.light{background:#fff;color:var(--navy);border-color:#fff}
.btn.light:hover{background:var(--steel);border-color:var(--steel)}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:6px}

.hero{position:relative;background:var(--navy);color:#fff;overflow:hidden;padding:100px 0 90px}
.hero::before{content:"";position:absolute;inset:0;background-image:url(img/hero-network.jpg);background-size:cover;background-position:center;opacity:.18}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(1200px 500px at 20% 0%,rgba(47,125,114,.28),transparent 60%)}
.hero-in{position:relative;z-index:2;max-width:46rem}
.hero h1{font-size:clamp(2.6rem,6vw,4.4rem);margin:18px 0 20px}
.hero .lede{color:rgba(232,237,242,.86)}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-badges{display:flex;gap:24px;margin-top:40px;flex-wrap:wrap;font-size:.8rem;color:rgba(232,237,242,.66)}
.hero-badges span{display:flex;align-items:center;gap:8px}
.hero-badges svg{flex:0 0 auto}

section.band{padding:92px 0;position:relative}
.band.tint{background:#fff}
.sec-head{max-width:60ch;margin:0 auto 54px;text-align:center}
.sec-head.left{margin-left:0;text-align:left}
.sec-head h2{font-size:clamp(1.9rem,4vw,2.9rem);margin:12px 0 12px}

/* PROCESS ANIMATION */
.process-stage{background:var(--navy);border-radius:16px;padding:48px 40px;color:#fff;box-shadow:var(--shadow);position:relative;overflow:hidden}
.process-stage::before{content:"";position:absolute;inset:0;background-image:url(tex/concrete-wall.png);opacity:.1}
.pipe{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin:12px 0 8px}
.pstep{text-align:center;position:relative;padding:0 12px}
.pstep .node{width:76px;height:76px;margin:0 auto 16px;border-radius:16px;background:var(--slate);border:1px solid rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;position:relative;transition:.4s}
.pstep.on .node{background:var(--accent);border-color:var(--accent-2);box-shadow:0 0 0 6px rgba(47,125,114,.22),0 14px 30px -12px rgba(47,125,114,.7);transform:translateY(-4px)}
.pstep .node svg{stroke:rgba(232,237,242,.7);transition:.4s}
.pstep.on .node svg{stroke:#fff}
.pstep h4{font-size:1rem;margin-bottom:5px;transition:.3s;opacity:.65}
.pstep.on h4{opacity:1}
.pstep p{font-size:.82rem;color:rgba(232,237,242,.55);min-height:2.6em}
.pstep.on p{color:rgba(232,237,242,.82)}
.pconn{position:absolute;top:38px;left:calc(50% + 40px);right:calc(-50% + 40px);height:2px;background:rgba(255,255,255,.12);z-index:1}
.pconn .fill{position:absolute;inset:0;width:0;background:var(--accent-2);transition:width .5s ease}
.pstep.done .pconn .fill{width:100%}
.pstep:last-child .pconn{display:none}
.process-caption{position:relative;z-index:2;text-align:center;margin-top:30px;padding-top:26px;border-top:1px solid rgba(255,255,255,.1)}
.process-caption .big{font-size:1.3rem;font-weight:600;min-height:1.5em}
.process-caption .sub{color:rgba(232,237,242,.62);font-size:.92rem;margin-top:4px}
.process-controls{display:flex;justify-content:center;gap:10px;margin-top:22px}
.dot{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.22);border:none;cursor:pointer;transition:.2s}
.dot.on{background:var(--accent-2);width:26px;border-radius:5px}

/* feature grid */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:30px 26px;box-shadow:var(--shadow-sm);transition:transform .3s,box-shadow .3s}
.feat:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.feat .ic{width:44px;height:44px;border-radius:10px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.feat h3{font-size:1.2rem;margin-bottom:7px}
.feat p{color:var(--ink-soft);font-size:.94rem}

/* trust */
.trust{background:var(--slate);color:#fff}
.trust .sec-head h2,.trust .eyebrow{color:#fff}
.trust .eyebrow{color:var(--accent-2)}
.frameworks{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:20px}
.fw{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:22px 18px;text-align:center}
.fw .n{font-weight:700;font-size:1.05rem;letter-spacing:.02em}
.fw .d{font-size:.78rem;color:rgba(232,237,242,.6);margin-top:4px}
.trust-note{text-align:center;margin-top:26px;font-size:.84rem;color:rgba(232,237,242,.5)}

/* contact */
.contact{background:#fff}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact-copy .stat{display:flex;gap:14px;padding:16px 0;border-top:1px solid var(--line);align-items:baseline}
.contact-copy .stat b{font-size:1.6rem;color:var(--accent);min-width:80px}
form.lead{display:grid;gap:16px;background:var(--paper);border:1px solid var(--line);padding:34px;border-radius:14px}
.field{display:grid;gap:6px}
.field label{font-size:.78rem;font-weight:600;color:var(--ink-soft)}
.field input,.field textarea,.field select{font-family:var(--sans);font-size:1rem;padding:12px 14px;border:1px solid var(--line);background:#fff;border-radius:8px;transition:border .2s,box-shadow .2s}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.field textarea{min-height:96px;resize:vertical}
.form-note{font-size:.8rem;color:var(--ink-soft)}
.form-ok{display:none;background:var(--accent-soft);border:1px solid var(--accent);color:var(--accent);padding:16px 18px;border-radius:10px;font-weight:500}
.form-ok.show{display:block}

footer.foot{background:var(--navy);color:rgba(232,237,242,.66);padding:56px 0 30px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot .brand{color:#fff}
.foot h4{color:#fff;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px}
.foot ul{list-style:none;display:grid;gap:9px;font-size:.9rem}
.foot-bottom{display:flex;justify-content:space-between;padding-top:22px;font-size:.78rem;flex-wrap:wrap;gap:10px}
.foot-bottom a{color:var(--accent-2)}

.reveal{opacity:1}
.js-reveal .reveal{opacity:0;transform:translateY(24px);transition:opacity .8s ease,transform .8s ease}
.js-reveal .reveal.in{opacity:1;transform:none}

@media(max-width:900px){
  .feat-grid,.frameworks{grid-template-columns:1fr 1fr}
  .contact-grid,.foot-grid{grid-template-columns:1fr}
  .pipe{grid-template-columns:1fr 1fr;gap:24px 12px}
  .pconn{display:none}
}
@media(max-width:640px){
  .feat-grid,.frameworks,.pipe{grid-template-columns:1fr}
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-links.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;background:var(--paper);padding:22px;gap:16px;border-bottom:1px solid var(--line)}
  section.band{padding:60px 0}
  .process-stage{padding:32px 20px}
}