:root{
  --bg:#06121a;
  --bg-2:#0a1c28;
  --panel:#0e2230;
  --ink:#e9f6f7;
  --muted:#8fb0b8;
  --teal:#3ad1c5;
  --blue:#4f7cff;
  --line:rgba(58,209,197,.16);
  --radius:18px;
  --max:1180px;
  --font:'Sora',system-ui,sans-serif;
  --mono:'Space Mono',monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
.grad{background:linear-gradient(100deg,var(--teal),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}

/* HEADER */
#site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px clamp(20px,5vw,56px);
  transition:background .35s,backdrop-filter .35s,padding .35s,border-color .35s;
  border-bottom:1px solid transparent;
}
#site-header.scrolled{
  background:rgba(6,18,26,.78);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  padding:12px clamp(20px,5vw,56px);
}
.logo{display:flex;align-items:center;gap:10px}
.logo-mark{flex:none;filter:drop-shadow(0 0 10px rgba(58,209,197,.35))}
.logo-text{font-weight:800;letter-spacing:.04em;font-size:1.05rem}
.logo-ai{color:var(--teal);font-weight:700}
#nav{display:flex;align-items:center;gap:30px}
#nav a{font-size:.92rem;color:var(--muted);transition:color .2s;position:relative}
#nav a:hover{color:var(--ink)}
.nav-cta{
  color:var(--bg)!important;font-weight:700;
  background:linear-gradient(100deg,var(--teal),var(--blue));
  padding:9px 18px;border-radius:40px;
}
.nav-cta:hover{filter:brightness(1.08)}
#menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer}
#menu-toggle span{width:26px;height:2px;background:var(--ink);transition:.3s}

/* HERO */
#hero{position:relative;height:100vh;min-height:680px;display:flex;align-items:center;overflow:hidden}
#bg-canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.hero-overlay{
  position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 70% 30%,transparent 35%,rgba(6,18,26,.55) 80%),
    linear-gradient(180deg,rgba(6,18,26,.45),rgba(6,18,26,.15) 40%,var(--bg) 98%);
  pointer-events:none;
}
.hero-content{
  position:relative;z-index:3;
  max-width:var(--max);width:100%;
  margin:0 auto;padding:0 clamp(20px,5vw,56px);
}
.badge{
  display:inline-block;font-family:var(--mono);font-size:.78rem;
  color:var(--teal);border:1px solid var(--line);
  padding:7px 14px;border-radius:40px;margin-bottom:24px;
  background:rgba(58,209,197,.06);
  animation:fadeUp .8s both;
}
.hero-title{
  font-size:clamp(2.4rem,6vw,4.6rem);
  font-weight:800;line-height:1.05;letter-spacing:-.02em;
  animation:fadeUp .8s .1s both;
}
.hero-sub{
  max-width:600px;color:var(--muted);font-size:clamp(1rem,2vw,1.18rem);
  margin:22px 0 32px;animation:fadeUp .8s .2s both;
}
.hero-sub strong{color:var(--ink)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;animation:fadeUp .8s .3s both}
.btn{
  display:inline-block;padding:14px 28px;border-radius:44px;
  font-weight:600;font-size:.96rem;cursor:pointer;border:1px solid transparent;transition:.25s;
}
.btn-primary{background:linear-gradient(100deg,var(--teal),var(--blue));color:var(--bg)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(79,124,255,.3)}
.btn-ghost{border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:rgba(58,209,197,.08);border-color:var(--teal)}
.hero-stats{display:flex;gap:38px;margin-top:48px;flex-wrap:wrap;animation:fadeUp .8s .4s both}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats b{font-size:1.7rem;color:var(--teal);font-weight:800}
.hero-stats span{font-size:.82rem;color:var(--muted)}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:3}
.scroll-hint span{
  display:block;width:24px;height:38px;border:2px solid var(--muted);border-radius:14px;position:relative;
}
.scroll-hint span::after{
  content:"";position:absolute;top:7px;left:50%;transform:translateX(-50%);
  width:4px;height:7px;background:var(--teal);border-radius:3px;animation:scroll 1.6s infinite;
}
@keyframes scroll{0%{opacity:0;top:7px}40%{opacity:1}100%{opacity:0;top:18px}}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}

/* SECTIONS */
.section{max-width:var(--max);margin:0 auto;padding:clamp(70px,10vw,120px) clamp(20px,5vw,56px)}
.section.alt{max-width:none;background:var(--bg-2);border-block:1px solid var(--line)}
.section.alt > *{max-width:var(--max);margin-inline:auto}
.section-head{max-width:680px;margin-bottom:54px}
.kicker{font-family:var(--mono);font-size:.78rem;color:var(--teal);letter-spacing:.12em;text-transform:uppercase}
.section-head h2{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;letter-spacing:-.02em;margin:10px 0 14px}
.section-head p{color:var(--muted);font-size:1.05rem}

/* CARDS */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cards.two{grid-template-columns:repeat(2,1fr)}
.card{
  background:linear-gradient(160deg,var(--panel),var(--bg-2));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;transition:transform .3s,border-color .3s,box-shadow .3s;
}
.card:hover{transform:translateY(-6px);border-color:var(--teal);box-shadow:0 18px 40px rgba(0,0,0,.35)}
.card-ico{font-size:1.8rem;margin-bottom:14px}
.card h3{font-size:1.2rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.95rem}
.card.big{padding:38px}
.card.big h3{font-size:1.5rem}
.tag{display:inline-block;font-family:var(--mono);font-size:.72rem;color:var(--teal);
  border:1px solid var(--line);border-radius:30px;padding:5px 12px;margin:14px 8px 0 0}

/* STEPS */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{padding:28px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line)}
.step b{font-family:var(--mono);font-size:1.8rem;color:var(--blue)}
.step h3{margin:10px 0 6px;font-size:1.15rem}
.step p{color:var(--muted);font-size:.92rem}

/* ABOUT */
.about{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center}
.about h2{font-size:clamp(1.8rem,4vw,2.6rem);margin:10px 0 18px;font-weight:800}
.about p{color:var(--muted);margin-bottom:14px}
.about p strong{color:var(--ink)}
.about-card{
  background:linear-gradient(160deg,var(--teal),var(--blue));
  border-radius:var(--radius);padding:42px;color:var(--bg);
}
.quote{font-size:1.4rem;font-weight:700;line-height:1.4}

/* FORM */
.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:760px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:.85rem;color:var(--muted)}
.field input,.field textarea{
  background:var(--panel);border:1px solid var(--line);border-radius:12px;
  padding:13px 15px;color:var(--ink);font-family:var(--font);font-size:.95rem;transition:border-color .2s;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--teal)}
.contact-form .btn{grid-column:1/-1;justify-self:start}
.form-msg{grid-column:1/-1;font-size:.9rem;color:var(--teal);min-height:1em}

/* FOOTER */
footer{background:var(--bg-2);border-top:1px solid var(--line);padding:60px clamp(20px,5vw,56px) 30px}
.foot-grid{max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.foot-grid h4{font-size:.95rem;margin-bottom:14px}
.foot-grid a{display:block;color:var(--muted);font-size:.9rem;margin-bottom:8px;transition:color .2s}
.foot-grid a:hover{color:var(--teal)}
.foot-tag{color:var(--muted);font-size:.92rem;margin-top:12px;max-width:300px}
.foot-loc{color:var(--muted);font-size:.9rem}
.foot-bottom{max-width:var(--max);margin:40px auto 0;padding-top:22px;border-top:1px solid var(--line);
  color:var(--muted);font-size:.85rem;text-align:center}

/* REVEAL */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}

/* RESPONSIVE */
@media(max-width:900px){
  .cards,.cards.two,.steps{grid-template-columns:1fr 1fr}
  .about{grid-template-columns:1fr}
}
@media(max-width:680px){
  #nav{position:fixed;inset:64px 0 auto 0;flex-direction:column;background:rgba(6,18,26,.97);
    backdrop-filter:blur(14px);padding:24px;gap:18px;border-bottom:1px solid var(--line);
    transform:translateY(-120%);transition:transform .35s;align-items:flex-start}
  #nav.open{transform:translateY(0)}
  #menu-toggle{display:flex}
  #menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  #menu-toggle.open span:nth-child(2){opacity:0}
  #menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .cards,.cards.two,.steps,.contact-form{grid-template-columns:1fr}
  .hero-stats{gap:24px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}