/* ============================================
   FIRST HUB — v4 · Dark premium · Neon accent
   ============================================ */
@import url('https://api.fontshare.com/v2/css?f[]=cabinet-grotesk@400,500,700,800,900&f[]=satoshi@300,400,500,600,700,900&f[]=jet-brains-mono@400,700&display=swap');

:root{
  --bg-0:#050507;
  --bg-1:#0a0a0e;
  --bg-2:#101016;
  --bg-card:#12121a;
  --bg-card-hover:#181822;
  --bg-elevated:#1e1e2a;
  --bg-glass:rgba(12,12,20,.75);

  --accent:#c8ff00;
  --accent-bright:#dbff4d;
  --accent-dim:#96bf00;
  --glow-2:rgba(200,255,0,.02);
  --glow-4:rgba(200,255,0,.04);
  --glow-8:rgba(200,255,0,.08);
  --glow-14:rgba(200,255,0,.14);
  --glow-22:rgba(200,255,0,.22);
  --glow-35:rgba(200,255,0,.35);

  --white:#f2f2f5;
  --gray-1:#c4c4cc;
  --gray-2:#8e8e9a;
  --gray-3:#5e5e6a;
  --gray-4:#3a3a44;

  --border-1:rgba(255,255,255,.05);
  --border-2:rgba(255,255,255,.09);
  --border-3:rgba(255,255,255,.14);
  --border-a:rgba(200,255,0,.1);
  --border-a2:rgba(200,255,0,.25);

  --ff-d:'Cabinet Grotesk',sans-serif;
  --ff-b:'Satoshi',sans-serif;
  --ff-m:'JetBrains Mono',monospace;

  --max-w:1200px;
  --px:44px;
  --sec:140px;

  --r-sm:10px;--r-md:16px;--r-lg:24px;--r-xl:36px;--r-full:999px;
  --ease:cubic-bezier(.16,1,.3,1);
  --t-f:.2s var(--ease);--t-m:.5s var(--ease);--t-s:.8s var(--ease);
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--ff-b);font-weight:400;color:var(--white);background:var(--bg-0);line-height:1.65;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:color var(--t-f)}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
::selection{background:var(--accent);color:var(--bg-0)}

/* Layout */
.container{max-width:var(--max-w);margin:0 auto;padding:0 var(--px)}

/* ============ HERO 3D GRID ============ */
.hero-grid{
  position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:0;
}
/* The 3D perspective plane */
.hero-grid__plane{
  position:absolute;
  left:-20%;right:-20%;
  bottom:-10%;
  height:70%;
  transform:perspective(600px) rotateX(55deg);
  transform-origin:center bottom;
}
.hero-grid__plane-lines{
  position:absolute;inset:0;
  background-image:
    linear-gradient(90deg,rgba(200,255,0,.15) 1px,transparent 1px),
    linear-gradient(0deg,rgba(200,255,0,.15) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:linear-gradient(to top,rgba(0,0,0,.8) 0%,rgba(0,0,0,.3) 50%,transparent 80%);
  -webkit-mask-image:linear-gradient(to top,rgba(0,0,0,.8) 0%,rgba(0,0,0,.3) 50%,transparent 80%);
}
/* Glow wash on the 3D grid */
.hero-grid__plane-glow{
  position:absolute;inset:0;
  background:radial-gradient(ellipse 50% 60% at 50% 80%,rgba(200,255,0,.1),transparent 70%);
}
/* Top-level radial glow above the grid */
.hero-grid__glow{
  position:absolute;
  bottom:5%;left:50%;transform:translateX(-50%);
  width:900px;height:500px;
  background:radial-gradient(ellipse,rgba(200,255,0,.06) 0%,transparent 70%);
}
/* Horizon fade line */
.hero-grid__horizon{
  position:absolute;
  bottom:38%;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent 10%,rgba(200,255,0,.12) 35%,rgba(200,255,0,.2) 50%,rgba(200,255,0,.12) 65%,transparent 90%);
}
/* Vertical accent lines (subtle, not grid) */
.hero-grid__verticals{
  position:absolute;inset:0;
  background-image:
    linear-gradient(90deg,transparent 49.8%,rgba(200,255,0,.03) 49.8%,rgba(200,255,0,.03) 50.2%,transparent 50.2%),
    linear-gradient(90deg,transparent 24.8%,rgba(200,255,0,.02) 24.8%,rgba(200,255,0,.02) 25.2%,transparent 25.2%),
    linear-gradient(90deg,transparent 74.8%,rgba(200,255,0,.02) 74.8%,rgba(200,255,0,.02) 75.2%,transparent 75.2%);
  mask-image:linear-gradient(to bottom,transparent 0%,rgba(0,0,0,.3) 30%,rgba(0,0,0,.1) 70%,transparent 100%);
  -webkit-mask-image:linear-gradient(to bottom,transparent 0%,rgba(0,0,0,.3) 30%,rgba(0,0,0,.1) 70%,transparent 100%);
}

/* --- SECTION GRID: subtler version for other sections --- */
.grid-bg{
  position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:0;
}
.grid-bg__lines{
  position:absolute;inset:0;
  background-image:
    linear-gradient(90deg,rgba(200,255,0,.025) 1px,transparent 1px),
    linear-gradient(0deg,rgba(200,255,0,.025) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(ellipse 70% 60% at 50% 50%,rgba(0,0,0,.6),transparent);
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 50%,rgba(0,0,0,.6),transparent);
}
.grid-bg__dots{
  position:absolute;inset:0;
  background-image:radial-gradient(circle 1.5px,rgba(200,255,0,.08) 0%,transparent 100%);
  background-size:72px 72px;
  mask-image:radial-gradient(ellipse 60% 50% at 50% 50%,rgba(0,0,0,.5),transparent);
  -webkit-mask-image:radial-gradient(ellipse 60% 50% at 50% 50%,rgba(0,0,0,.5),transparent);
}
.grid-bg__glow{
  position:absolute;inset:0;
  background:radial-gradient(ellipse 45% 40% at 50% 50%,rgba(200,255,0,.03),transparent);
}

/* ============ TEXTURES ============ */
.bg-noise{
  position:fixed;inset:0;opacity:.035;pointer-events:none;z-index:9999;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat:repeat;background-size:200px;mix-blend-mode:overlay;
}
.bg-orb{position:absolute;border-radius:50%;pointer-events:none;z-index:0}
.bg-orb--a{background:radial-gradient(circle,rgba(200,255,0,.1),transparent 70%);filter:blur(100px)}
.bg-orb--b{background:radial-gradient(circle,rgba(60,120,255,.05),transparent 70%);filter:blur(110px)}
.bg-orb--pulse{animation:orb-b 8s ease-in-out infinite}
@keyframes orb-b{0%,100%{opacity:.5;transform:scale(1)}50%{opacity:1;transform:scale(1.1)}}
.bg-vignette{position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse 70% 60% at 50% 45%,transparent,var(--bg-0))}

/* ============ TYPOGRAPHY ============ */
.h1{font-size:clamp(3rem,7.5vw,6.2rem)}
.h2{font-size:clamp(2.1rem,5vw,4.2rem)}
.h3{font-size:clamp(1.4rem,3vw,2.2rem)}
.hd{font-family:var(--ff-d);font-weight:800;line-height:1.02;letter-spacing:-.045em}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--ff-b);font-weight:600;font-size:.88rem;
  padding:15px 36px;border-radius:var(--r-full);
  transition:all var(--t-m);position:relative;white-space:nowrap;
}
.btn--p{
  background:var(--accent);color:var(--bg-0);
  box-shadow:0 2px 20px var(--glow-14),inset 0 1px 0 rgba(255,255,255,.25);
}
.btn--p:hover{
  background:var(--accent-bright);transform:translateY(-3px) scale(1.02);
  box-shadow:0 6px 40px var(--glow-22),0 0 80px var(--glow-8);
}
.btn--o{
  background:rgba(255,255,255,.03);color:var(--white);
  border:1px solid var(--border-2);backdrop-filter:blur(12px);
}
.btn--o:hover{
  border-color:var(--accent);color:var(--accent);transform:translateY(-3px);
  box-shadow:0 0 30px var(--glow-8);background:var(--glow-2);
}
.btn--sm{padding:10px 24px;font-size:.78rem}
.btn--lg{padding:18px 48px;font-size:.95rem}
.btn .arr{transition:transform var(--t-f);display:inline-block}
.btn:hover .arr{transform:translateX(5px)}

/* ============ TAGS ============ */
.tag{
  display:inline-flex;align-items:center;gap:7px;
  font-family:var(--ff-m);font-size:.6rem;text-transform:uppercase;letter-spacing:.14em;
  padding:7px 16px;border-radius:var(--r-full);
  background:var(--glow-8);color:var(--accent);border:1px solid var(--border-a);
}
.tag--muted{background:rgba(255,255,255,.04);color:var(--gray-2);border-color:var(--border-2)}

/* ============ CARDS ============ */
.card{
  background:var(--bg-card);border:1px solid var(--border-1);border-radius:var(--r-lg);
  padding:36px;transition:all var(--t-m);position:relative;overflow:hidden;
}
.card::after{
  content:'';position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:linear-gradient(135deg,rgba(255,255,255,.06),transparent 40%,var(--glow-4));
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  opacity:0;transition:opacity var(--t-m);pointer-events:none;
}
.card:hover{
  background:var(--bg-card-hover);transform:translateY(-8px);
  box-shadow:0 24px 80px rgba(0,0,0,.5),0 0 40px var(--glow-2);
}
.card:hover::after{opacity:1}

/* ============ HEADER ============ */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;padding:20px 0;transition:all var(--t-m)}
.header--s{
  background:rgba(5,5,7,.85);backdrop-filter:blur(28px) saturate(1.4);
  -webkit-backdrop-filter:blur(28px) saturate(1.4);
  border-bottom:1px solid var(--border-1);padding:13px 0;
}
.header__in{display:flex;align-items:center;justify-content:space-between;max-width:var(--max-w);margin:0 auto;padding:0 var(--px)}
.header__logo{display:flex;align-items:center;gap:12px;font-family:var(--ff-d);font-weight:800;font-size:1.2rem;letter-spacing:-.03em}
.header__logo-i{
  width:36px;height:36px;background:var(--accent);border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  color:var(--bg-0);font-size:.85rem;font-weight:900;
  box-shadow:0 0 18px var(--glow-14),inset 0 1px 0 rgba(255,255,255,.3);
}
.header__nav{display:flex;align-items:center;gap:32px}
.header__nav a{font-size:.82rem;font-weight:500;color:var(--gray-2);transition:color var(--t-f);position:relative}
.header__nav a:hover,.header__nav a.active{color:var(--white)}
.header__nav a.active::after{
  content:'';position:absolute;bottom:-7px;left:50%;transform:translateX(-50%);
  width:5px;height:5px;background:var(--accent);border-radius:50%;box-shadow:0 0 10px var(--glow-22);
}
.header__acts{display:flex;align-items:center;gap:10px}
.header__burger{display:none;flex-direction:column;gap:5px;width:26px;cursor:pointer}
.header__burger span{display:block;height:2px;background:var(--white);border-radius:2px}

/* ============ FOOTER ============ */
.footer{padding:100px 0 44px;border-top:1px solid var(--border-1);background:var(--bg-1);position:relative}
.footer::before{
  content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:400px;height:1px;background:linear-gradient(90deg,transparent,var(--accent-dim),transparent);opacity:.2;
}
.footer__grid{display:grid;grid-template-columns:2.5fr 1fr 1fr 1fr;gap:56px;margin-bottom:56px}
.footer__brand{max-width:320px}
.footer__brand-logo{display:flex;align-items:center;gap:10px;font-family:var(--ff-d);font-weight:800;font-size:1.1rem;margin-bottom:20px}
.footer__brand-logo .li{
  width:30px;height:30px;background:var(--accent);border-radius:7px;
  display:flex;align-items:center;justify-content:center;color:var(--bg-0);font-size:.75rem;font-weight:900;
  box-shadow:0 0 12px var(--glow-8);
}
.footer__brand p{color:var(--gray-3);font-size:.82rem;line-height:1.85}
.footer__col h4{font-family:var(--ff-m);font-weight:700;font-size:.6rem;text-transform:uppercase;letter-spacing:.16em;color:var(--gray-2);margin-bottom:20px}
.footer__col ul li{margin-bottom:15px}
.footer__col ul li a{color:var(--gray-3);font-size:.82rem;transition:all var(--t-f)}
.footer__col ul li a:hover{color:var(--accent);padding-left:6px}
.footer__bot{display:flex;align-items:center;justify-content:space-between;padding-top:32px;border-top:1px solid var(--border-1)}
.footer__bot p{color:var(--gray-4);font-size:.65rem;letter-spacing:.03em}
.footer__soc{display:flex;gap:10px}
.footer__soc a{
  width:34px;height:34px;border-radius:var(--r-full);border:1px solid var(--border-1);
  display:flex;align-items:center;justify-content:center;color:var(--gray-3);font-size:.7rem;transition:all var(--t-f);
}
.footer__soc a:hover{border-color:var(--accent);color:var(--accent);background:var(--glow-4);box-shadow:0 0 16px var(--glow-8)}

/* ============ SECTIONS ============ */
.sec{padding:var(--sec) 0;position:relative;overflow:hidden}
.sec-head{max-width:700px;margin-bottom:64px}
.sec-head--c{text-align:center;margin-left:auto;margin-right:auto}
.sec-label{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--ff-m);font-size:.6rem;text-transform:uppercase;letter-spacing:.18em;
  color:var(--accent);margin-bottom:24px;
}
.sec-label::before{content:'';width:24px;height:1px;background:var(--accent);opacity:.4}
.sec-title{font-family:var(--ff-d);font-weight:800;line-height:1.05;letter-spacing:-.045em;margin-bottom:16px}
.sec-sub{color:var(--gray-2);font-size:1.05rem;line-height:1.85;max-width:520px}
.sec-head--c .sec-sub{margin:0 auto}

.divider{height:1px;background:linear-gradient(90deg,transparent,var(--border-2),transparent);border:none;margin:0}

/* Grids */
.g2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.g4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}

/* Carousel */
.carousel{overflow:hidden;position:relative;padding:12px 0}
.carousel::before,.carousel::after{content:'';position:absolute;top:0;bottom:0;width:200px;z-index:2;pointer-events:none}
.carousel::before{left:0;background:linear-gradient(90deg,var(--bg-0),transparent)}
.carousel::after{right:0;background:linear-gradient(270deg,var(--bg-0),transparent)}
.carousel__track{display:flex;gap:20px;animation:marquee 45s linear infinite;width:max-content}
.carousel__track:hover{animation-play-state:paused}
@keyframes marquee{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* Animations */
@keyframes fade-up{from{opacity:0;transform:translateY(50px)}to{opacity:1;transform:translateY(0)}}
@keyframes shimmer{0%{background-position:0% center}100%{background-position:200% center}}
.anim{opacity:0;transform:translateY(50px);transition:all 1s var(--ease)}
.anim.vis{opacity:1;transform:translateY(0)}
.d1{transition-delay:.12s}.d2{transition-delay:.24s}.d3{transition-delay:.36s}.d4{transition-delay:.48s}

/* ============ RESPONSIVE ============ */
@media(max-width:1024px){
  :root{--sec:100px;--px:28px}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media(max-width:768px){
  :root{--sec:72px;--px:20px}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .footer__bot{flex-direction:column;gap:16px;text-align:center}
  .header__nav{display:none}
  .header__acts .btn--o{display:none}
  .header__burger{display:flex}
}
@media(max-width:480px){:root{--px:16px}.btn--lg{padding:16px 32px;font-size:.88rem}}