/* Vast Tech Solution - design system */
:root{
  --midnight:#070B1A; --navy:#0C1430; --navy-2:#111B3F;
  --blue:#2F6BFF; --cyan:#22D3EE; --violet:#8B5CF6;
  --text:#F1F5F9; --muted:#94A3B8; --line:rgba(255,255,255,.1);
  --glass:rgba(255,255,255,.04);
  --grad:linear-gradient(135deg,#22D3EE,#2F6BFF 55%,#8B5CF6);
  --font-head:"Sora",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --font-body:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --wrap:1160px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--midnight);color:var(--text);font:16px/1.65 var(--font-body);-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:var(--font-head);line-height:1.15;margin:0;letter-spacing:-.02em}
p{margin:0}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:8px;background:var(--cyan);color:#001;padding:8px 14px;border-radius:6px;z-index:99}
.skip:focus{left:8px}

.site-header{position:sticky;top:0;z-index:50;background:rgba(7,11,26,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand img{height:40px;width:auto}
.nav{display:flex;gap:26px;align-items:center}
.nav a{color:var(--muted);font-size:15px;transition:color .2s}
.nav a:hover{color:var(--text)}
.nav-toggle,.burger{display:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:10px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .2s,background .2s}
.btn-primary,.nav a.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 30px -10px rgba(47,107,255,.8)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 12px 34px -8px rgba(34,211,238,.6)}
.btn-ghost{border-color:var(--line);background:var(--glass);color:var(--text)}
.btn-ghost:hover{border-color:rgba(34,211,238,.5)}

.hero{position:relative;padding:84px 0 72px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-20% -10% auto auto;width:640px;height:640px;background:radial-gradient(closest-side,rgba(47,107,255,.35),transparent);pointer-events:none}
.hero::after{content:"";position:absolute;inset:auto auto -30% -10%;width:520px;height:520px;background:radial-gradient(closest-side,rgba(139,92,246,.25),transparent);pointer-events:none}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(34px,5.2vw,58px);font-weight:700}
.hero p.lead{margin-top:22px;color:var(--muted);font-size:18px;max-width:52ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

.chat{background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));border:1px solid var(--line);border-radius:20px;padding:18px;backdrop-filter:blur(14px);box-shadow:0 30px 80px -30px rgba(0,0,0,.8)}
.chat-head{display:flex;align-items:center;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
.dot{width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.msgs{display:flex;flex-direction:column;gap:12px;padding-top:16px}
.msg{max-width:88%;padding:11px 14px;border-radius:14px;font-size:14.5px;line-height:1.5;opacity:0;transform:translateY(6px);animation:in .5s forwards}
.msg.you{align-self:flex-end;background:var(--blue);color:#fff;border-bottom-right-radius:4px}
.msg.ai{align-self:flex-start;background:var(--navy-2);border:1px solid var(--line);border-bottom-left-radius:4px}
.msg:nth-child(1){animation-delay:.4s}.msg:nth-child(2){animation-delay:1.3s}.msg:nth-child(3){animation-delay:2.4s}.msg:nth-child(4){animation-delay:3.3s}
.chat-note{margin-top:14px;font-size:12px;color:var(--muted)}
@keyframes in{to{opacity:1;transform:none}}

section{padding:84px 0}
.sec-head{max-width:640px;margin-bottom:44px}
.sec-head h2{font-size:clamp(28px,3.6vw,40px)}
.sec-head p{margin-top:14px;color:var(--muted)}
.alt{background:linear-gradient(180deg,var(--navy),var(--midnight))}

.services{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{display:block;background:var(--glass);border:1px solid var(--line);border-radius:16px;padding:26px;backdrop-filter:blur(8px);transition:border-color .2s,transform .2s}
a.card:hover{border-color:rgba(34,211,238,.45);transform:translateY(-2px)}
.card .ic{width:42px;height:42px;border-radius:11px;background:rgba(47,107,255,.15);display:grid;place-items:center;margin-bottom:18px;color:var(--cyan)}
.card .ic svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}

.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.why{display:grid;gap:16px}
.why div{padding-left:18px;border-left:2px solid var(--blue)}
.why h3{font-size:17px;margin-bottom:4px}
.why p{color:var(--muted);font-size:15px}

.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
.steps li{counter-increment:s;background:var(--glass);border:1px solid var(--line);border-radius:14px;padding:20px}
.steps li::before{content:counter(s);display:block;font:700 22px var(--font-head);background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:10px}
.steps h3{font-size:16px;margin-bottom:6px}
.steps p{font-size:14px;color:var(--muted)}

.ai-band{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.ticks{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:10px;color:var(--muted)}
.ticks li{padding-left:26px;position:relative}
.ticks li::before{content:"";position:absolute;left:0;top:11px;width:12px;height:2px;background:var(--cyan)}

details{border:1px solid var(--line);border-radius:12px;background:var(--glass);margin-bottom:12px}
summary{cursor:pointer;padding:18px 20px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--cyan);font-size:20px;line-height:1}
details[open] summary::after{content:"\2212"}
details p{padding:0 20px 18px;color:var(--muted)}

.cta{background:var(--grad);border-radius:24px;padding:56px 32px;text-align:center}
.cta h2{font-size:clamp(26px,3.4vw,38px)}
.cta p{margin:14px auto 28px;max-width:52ch;color:rgba(255,255,255,.88)}
.cta .btn{background:#fff;color:var(--navy)}

footer{border-top:1px solid var(--line);padding:56px 0 32px;background:var(--navy)}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.foot img{height:38px;margin-bottom:14px}
.foot h4{font:600 14px var(--font-head);margin:0 0 14px}
.foot a,.foot p{color:var(--muted);font-size:14.5px;display:block;margin-bottom:9px}
.foot a:hover{color:var(--text)}
.social{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.foot .social a{width:38px;height:38px;border:1px solid var(--line);border-radius:10px;display:grid;place-items:center;margin:0}
.social svg{width:18px;height:18px;fill:currentColor}
.copy{margin-top:40px;padding-top:22px;border-top:1px solid var(--line);color:var(--muted);font-size:13.5px}

@media (max-width:960px){
  .hero-grid,.split,.ai-band{grid-template-columns:1fr}
  .services{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .foot{grid-template-columns:1fr 1fr}
  .burger{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;cursor:pointer}
  .burger span,.burger span::before,.burger span::after{content:"";display:block;width:18px;height:2px;background:var(--text);position:relative}
  .burger span::before{position:absolute;top:-6px}.burger span::after{position:absolute;top:6px}
  .nav{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--navy);padding:12px 20px 20px;border-bottom:1px solid var(--line)}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav .btn{margin-top:14px;border:0;padding:12px 22px}
  .nav-toggle:checked ~ .nav{display:flex}
}
@media (max-width:600px){
  section{padding:60px 0}.hero{padding:56px 0 48px}
  .services,.steps,.foot{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .msg{animation:none;opacity:1;transform:none}
  *{transition:none!important}
}

/* inner pages */
.page-hero{padding:64px 0 48px;background:radial-gradient(60% 120% at 80% 0,rgba(47,107,255,.22),transparent)}
.page-hero h1{font-size:clamp(30px,4.4vw,46px)}
.page-hero .lead{margin-top:16px;color:var(--muted);font-size:18px;max-width:60ch}
.page-hero .hero-cta{margin-top:26px}
.crumbs{max-width:var(--wrap);margin:0 auto;padding:18px 20px 0;font-size:13.5px;color:var(--muted)}
.crumbs a:hover{color:var(--text)}
.prose p,.prose{color:var(--muted)}
.prose p{margin-bottom:16px;max-width:68ch}
.prose h2{color:var(--text);font-size:22px;margin:28px 0 8px}
.article{max-width:760px;padding-top:36px;padding-bottom:64px}
.article h1{font-size:clamp(28px,4vw,40px);margin:10px 0 24px}
.meta{font-size:13.5px;color:var(--muted)}
.pills{display:flex;flex-wrap:wrap;gap:10px}
.pill{border:1px solid var(--line);background:var(--glass);border-radius:999px;padding:6px 14px;font-size:14px;color:var(--muted)}
.price{margin:18px 0 14px;font:600 16px var(--font-head);color:var(--cyan)}
.form{display:grid;gap:16px}
.form fieldset{border:0;padding:0;margin:0 0 8px;display:grid;gap:14px}
.form legend{font:600 17px var(--font-head);margin-bottom:12px;padding:0}
.form label{display:grid;gap:6px;font-size:14.5px;color:var(--muted)}
.form input,.form select,.form textarea{width:100%;background:var(--navy);border:1px solid var(--line);border-radius:10px;padding:12px 14px;color:var(--text);font:inherit}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--cyan);outline:none}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.form-msg{font-size:14px;color:var(--cyan);min-height:1.4em}
.form-msg.err{color:#fca5a5}

/* top bar with contact + social icons */
.topbar{background:var(--navy);border-bottom:1px solid var(--line);font-size:13px}
.topbar-in{display:flex;justify-content:space-between;align-items:center;min-height:38px;gap:12px}
.topbar-contact{display:flex;gap:18px;flex-wrap:wrap}
.topbar-contact a{color:var(--muted)}.topbar-contact a:hover{color:var(--text)}
.topbar-social{display:flex;gap:8px}
.topbar-social a{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;color:var(--muted);border:1px solid var(--line);transition:color .2s,border-color .2s}
.topbar-social a:hover{color:var(--cyan);border-color:rgba(34,211,238,.5)}
.topbar-social svg{width:15px;height:15px;fill:currentColor}
@media (max-width:600px){.topbar-contact a:first-child{display:none}.topbar-in{justify-content:flex-end}}
.bar{min-height:68px}

/* floating buttons and chat panel */
.fab{position:fixed;right:18px;z-index:60;width:54px;height:54px;border-radius:50%;display:grid;place-items:center;border:0;cursor:pointer;color:#fff;box-shadow:0 10px 30px -8px rgba(0,0,0,.7)}
.fab-chat{bottom:18px;background:var(--grad)}
.fab-wa{bottom:84px;background:#25D366}
.chat-panel{position:fixed;right:18px;bottom:84px;z-index:61;width:380px;max-width:calc(100vw - 24px);height:560px;max-height:calc(100vh - 150px);box-shadow:0 30px 80px -20px rgba(0,0,0,.9);border-radius:18px}
.chat-panel[hidden]{display:none}
.chat-panel iframe{width:100%;height:100%;border:1px solid var(--line);border-radius:18px;background:var(--navy);display:block}
.chat-close{position:absolute;top:-38px;right:0;z-index:2;width:30px;height:30px;border-radius:8px;border:1px solid var(--line);background:var(--navy);color:var(--text);font-size:22px;line-height:1;cursor:pointer}
@media (max-width:600px){.chat-panel{right:12px;left:12px;width:auto;bottom:84px}}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;opacity:0}
.note{font-size:13px;color:var(--muted)}.note a{color:var(--cyan);text-decoration:underline}
.form-msg.ok{color:#6ee7b7}