:root{
  --bg:#05080f;
  --bg2:#070b14;
  --card:#0b1220;
  --text:#eaf2ff;
  --muted:#a7b3c8;
  --blue:#00bfff;
  --blue2:#1f5f8b;
  --silver:#c0c7ce;
  --line:rgba(255,255,255,.08);
  --radius:18px;
  --shadow: 0 20px 50px rgba(0,0,0,.45);
  --max: 1100px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: Inter, system-ui;
  color:var(--text);
  background:
    radial-gradient(circle at 80% 40%, rgba(0,191,255,.25), transparent 40%),
    #000000;
}

a{color:inherit; text-decoration:none}
.container{max-width:var(--max); margin:0 auto; padding:0 18px}

.header{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(10px);
  background: rgba(5,8,15,.7);
  border-bottom:1px solid var(--line);
}
.header__inner{display:flex; align-items:center; justify-content:space-between; height:64px}

.brand{display:flex; align-items:center; gap:10px}
.brand__mark{
  width:14px; height:14px; border-radius:50%;
  background: radial-gradient(circle at 30% 30%, #bff3ff, var(--blue) 60%, rgba(0,191,255,.2));
  box-shadow: 0 0 18px rgba(0,191,255,.55);
}
.brand__name{font-weight:800; letter-spacing:.14em}

.nav{display:flex; gap:18px; color:var(--muted)}
.nav a{padding:8px 10px; border-radius:10px}
.nav a:hover{background:rgba(255,255,255,.06); color:var(--text)}

.nav__toggle{
  display:none;
  width:42px; height:42px; border-radius:12px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
}
.nav__toggle span{
  display:block; height:2px; width:18px;
  background:var(--text);
  margin:5px auto;
  opacity:.9;
}

.hero{padding:70px 0 30px}
.hero__inner{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:24px;
  align-items:center;
}

.kicker{
  display:inline-block;
  font-size:12px;
  color:rgba(234,242,255,.85);
  letter-spacing:.12em;
  text-transform:uppercase;
  padding:8px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,255,255,.04);
}

h1{margin:14px 0 10px; font-size:44px; line-height:1.05}
.hero__sub{
  color:var(--muted);
  font-size:15px;
  line-height:1.6;
  margin:0 0 18px;
}

.cta{display:flex; gap:12px; flex-wrap:wrap; margin:18px 0 10px}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px;
  padding:12px 16px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text);
  font-weight:600;
}
.btn--primary{
  background: linear-gradient(135deg, rgba(0,191,255,.95), rgba(31,95,139,.95));
  border-color: rgba(0,191,255,.35);
  box-shadow: 0 16px 40px rgba(0,191,255,.18);
}
.btn--ghost:hover{background:rgba(255,255,255,.08)}

.meta{display:flex; gap:18px; flex-wrap:wrap; color:var(--muted); font-size:13px}
.meta span{color:rgba(234,242,255,.85)}

.glow-card{
  position:relative;
  border-radius:24px;
  overflow:hidden;
  background: radial-gradient(900px 500px at 35% 25%, rgba(0,191,255,.22), transparent 55%),
              linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.10);
  box-shadow: var(--shadow);
  min-height: 300px;
}
.glow-ring{
  position:absolute;
  width:420px; height:420px;
  left:-170px; top:50%;
  transform:translateY(-50%);
  border-radius:50%;
  border: 18px solid rgba(0,191,255,.65);
  filter: blur(.2px);
  box-shadow: 0 0 55px rgba(0,191,255,.25);
}
.glow-ring--2{
  border-width: 9px;
  border-color: rgba(0,191,255,.35);
  width:360px; height:360px;
  left:-140px;
}
.glow-content{
  position:relative;
  padding:26px;
}
.badge{
  display:inline-block;
  font-weight:800;
  letter-spacing:.16em;
  padding:10px 14px;
  border-radius:14px;
  background: rgba(0,0,0,.35);
  border:1px solid rgba(255,255,255,.10);
}
.small{margin-top:10px; color:var(--silver); font-weight:600}
.list{margin-top:14px; color:rgba(234,242,255,.85); line-height:1.7; font-size:14px}

.section{padding:54px 0}
.section--alt{
  background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
h2{margin:0 0 18px; font-size:28px}

.grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap:14px;
}
.card{
  background: rgba(255,255,255,.03);
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:16px;
  box-shadow: 0 12px 30px rgba(0,0,0,.25);
}
.card h3{margin:0 0 8px; font-size:15px}
.card p{margin:0; color:var(--muted); font-size:13px; line-height:1.55}

.split{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap:18px;
  align-items:start;
}
.panel{
  background: rgba(0,0,0,.25);
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:14px;
}

.contact{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:14px;
}
.contact__card{
  background: rgba(255,255,255,.03);
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:18px;
}

.footer{
  padding:22px 0 26px;
  font-size: 12px;
  text-align: center;
  border-top:1px solid var(--line);
  color:var(--muted);
}
.footer__inner{display:flex; justify-content:center; gap:12px; align-items:center; flex-wrap:wrap}

@media (max-width: 920px){
  .hero__inner{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr}
}
@media (max-width: 640px){
  h1{font-size:34px}
  .nav{display:none}
  .nav__toggle{display:block}
  .nav.nav--open{
    display:flex;
    position:absolute;
    right:18px; top:64px;
    flex-direction:column;
    background: rgba(5,8,15,.95);
    border:1px solid var(--line);
    border-radius:16px;
    padding:10px;
    min-width: 180px;
  }
}
/* show only one section at a time */
.app-section{ display:none; }
.app-section.active{ display:block; }

/* optional: highlight active menu item */
.nav a.is-active{
  background:rgba(255,255,255,.06);
  color:var(--text);
}
html, body {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* language switch */
.nav a.lang{
  border:1px solid rgba(255,255,255,.14);
  padding:6px 10px;
  border-radius:999px;
  color:rgba(234,242,255,.85);
}
.nav a.lang:hover{
  background:rgba(255,255,255,.06);
  color:var(--text);
}