:root{
  --bg:#0b1320; --fg:#e8f0ff; --mut:#9fb3d1; --acc:#28d67b; --acc2:#2ea8ff; --card:#0f1b2e; --line:#1e2b44; --shadow: rgba(0,0,0,.35);
}

/* Header background lighter so black logo text is visible */
.site-header {
  position: relative;
  overflow: clip;
  /*background: linear-gradient(180deg, #144b91 0%, #042045 100%);*/
  border-bottom: 1px solid #ddd;
}

/* Adjust navigation links for light background */
.site-header .nav a {
  color: #ffffff;
  opacity: 0.8;
}
.site-header .nav a:hover {
  opacity: 1;
  color: grey;
}

/* Brand text darker */
.brand span {
  color: #111;
}

/* Nav toggle button (mobile) darker */
.nav-toggle {
  border: 1px solid #aaa;
  color: #111;
  background: #f9f9f9;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font:16px/1.6 Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell; color:var(--fg); background:radial-gradient(1200px 600px at 70% -10%,rgba(46,168,255,.18),transparent), radial-gradient(900px 500px at -10% 10%,rgba(40,214,123,.18),transparent), var(--bg)}
a{color:var(--fg);text-decoration:none}
img{max-width:100%;height:auto}
.skip{position:absolute;left:-9999px;top:auto}
.skip:focus{left:1rem;top:1rem;background:#000;color:#fff;padding:.5rem 1rem;z-index:999}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px; border-bottom:1px solid grey}

.site-header{position:relative;overflow:clip}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;padding:18px 20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.6px}
.brand span{font-size:18px}
.nav{display:flex;gap:18px;list-style:none;margin:0;padding:0}
.nav a{opacity:.9}
.nav a:hover{opacity:1}
.nav-toggle{display:none;background:none;border:1px solid var(--line);color:var(--fg);padding:.4rem .6rem;border-radius:.6rem}
@media (max-width:860px){
  .nav{display:none;position:absolute;right:20px;top:64px;background:var(--card);border:1px solid var(--line);padding:12px 14px;border-radius:12px;box-shadow:0 20px 60px var(--shadow)}
  .nav[aria-expanded="true"], .nav.open{display:flex;flex-direction:column}
  .nav-toggle{display:block}
}

.hero{position:relative;display:grid;grid-template-columns:1.15fr 0.85fr;gap:24px;align-items:center;padding:28px 20px 40px}
.hero .hero-left h1{font-size:clamp(28px,4.6vw,52px);line-height:1.1;margin:.2rem 0 1rem}
.accent{color:var(--acc)}
.outline{color:transparent;-webkit-text-stroke:1px var(--fg)}
.lead{color:var(--mut);max-width:60ch}
.cta{display:flex;gap:12px;margin-top:18px}
.btn{display:inline-block;border:1px solid var(--line);padding:.8rem 1.1rem;border-radius:14px;box-shadow:0 8px 24px rgba(0,0,0,.15);transition:.2s;cursor:pointer}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:linear-gradient(135deg,var(--acc),#1bb766);border-color:transparent;color:#04160b;font-weight:700}
.btn.ghost{background:transparent}
.badges{display:flex;gap:16px;flex-wrap:wrap;margin:18px 0 0;padding:0;list-style:none;color:#bfead1}
.hero-right{position:relative}
.pseudo-card{width:100%;border-radius:24px;box-shadow:0 30px 80px rgba(0,0,0,.35);border:1px solid rgba(255,255,255,.12)}
.hero-bg{position:absolute;inset:0;z-index:-1;opacity:.35}
.hero-bg img{position:absolute;right:-80px;top:-40px;opacity:.35}
#grid-energy{position:absolute;left:0;bottom:-60px;width:110%;height:260px;opacity:.6;filter:contrast(110%) saturate(120%)}

.section{padding:72px 0;border-top:1px solid var(--line)}
.section.alt{background:linear-gradient(0deg,rgba(255,255,255,.03),rgba(255,255,255,.01))}
.section h2{font-size:clamp(22px,4vw,36px);margin:0 0 14px}
.section .intro{color:var(--mut);max-width:60ch}

.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:0 16px 48px rgba(0,0,0,.25)}
.card h3{margin:.2rem 0 .4rem}
.mini-pseudo{margin-top:.6rem;font-family:ui-monospace,Menlo,Consolas;background:#0e2333;border:1px solid #14324b;color:#a7ffcf;padding:.45rem .6rem;border-radius:10px;display:inline-block}

@media (max-width:980px){.cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.cards{grid-template-columns:1fr}}

.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:8px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:8px}
.news-card time{font-size:12px;color:var(--mut)}
.news-card h3{margin:0;font-size:18px}
.news-card p{margin:0;color:#cfe3ff}
.news-cta{text-align:center;margin-top:18px}

.tech{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:center}
.list{line-height:1.9}
.split-cta{margin-top:14px;display:flex;gap:10px;flex-wrap:wrap}
.pseudo-schema{width:100%;border-radius:18px;border:1px dashed rgba(255,255,255,.2);background:linear-gradient(180deg,rgba(46,168,255,.06),transparent)}

@media (max-width:900px){.tech{grid-template-columns:1fr}}

.form{display:grid;gap:12px}
.form .grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.form label{display:flex;flex-direction:column;gap:6px}
input,select,textarea{background:#0d1f31;border:1px solid #16324d;color:var(--fg);padding:.8rem 1rem;border-radius:12px;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--acc2);box-shadow:0 0 0 3px rgba(46,168,255,.2)}
.form-foot{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.chk{display:flex;align-items:center;gap:8px;color:#c6d9f6}

.contact{display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media (max-width:880px){.contact{grid-template-columns:1fr}}

.site-footer{border-top:1px solid var(--line);padding:24px 0;color:var(--mut)}
.site-footer .wrap{display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.site-footer nav{display:flex;gap:14px;flex-wrap:wrap}
.f-brand{display:flex;gap:8px;align-items:center;color:var(--fg);font-weight:700}