/* ===== CentralIA — landing styles ===== */
:root{
  --navy:#0B1C35; --navy2:#0f2547; --navy3:#13315c;
  --violet:#7F00FF; --violet2:#9b3dff; --cyan:#22d3ee;
  --grad-primary:linear-gradient(135deg,#7F00FF 0%,#4facfe 100%);
  --grad-soft:linear-gradient(135deg,#667eea 0%,#764ba2 100%);
  --ink:#0B1C35; --body:#3a4a66; --muted:#6b7a97;
  --bg:#ffffff; --bg-soft:#f4f7fd; --line:rgba(11,28,53,.10); --line-strong:rgba(11,28,53,.16);
  --white:#fff; --radius:16px; --radius-lg:22px;
  --shadow:0 18px 50px rgba(11,28,53,.10); --shadow-lg:0 40px 90px rgba(11,28,53,.22);
  --maxw:1160px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"Poppins",system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--body);background:var(--bg);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2,h3,h4{color:var(--ink);line-height:1.12;text-wrap:balance;font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(26px,3.4vw,40px)}
h3{font-size:20px;font-weight:700;letter-spacing:-.01em}
.grad{background:var(--grad-primary);-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--violet);margin-bottom:14px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:15px;
  padding:14px 26px;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:.2s;white-space:nowrap}
.btn-primary{background:var(--grad-primary);color:#fff;box-shadow:0 12px 30px rgba(127,0,255,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(127,0,255,.42)}
.btn-ghost{background:transparent;color:var(--white);border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* section head */
.section-head{max-width:720px;margin:0 auto 46px;text-align:center}
.section-head p{color:var(--muted);margin-top:14px;font-size:17px}
section{padding:88px 0}

/* ===== HEADER ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:.25s}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(11,28,53,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand-logo{height:34px;width:auto}
.nav{display:flex;align-items:center;gap:30px}
.nav a{font-size:15px;font-weight:500;color:var(--ink);opacity:.85;transition:.2s}
.nav a:hover{opacity:1;color:var(--violet)}
.nav .nav-cta{color:#fff;opacity:1}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}

/* ===== HERO ===== */
.hero{position:relative;background:var(--navy);color:#eaf0ff;overflow:hidden;padding:96px 0 100px}
.hero-bg{position:absolute;inset:0;
  background:
   radial-gradient(1100px 620px at 15% 0%, rgba(127,0,255,.42), transparent 60%),
   radial-gradient(1000px 640px at 100% 100%, rgba(34,211,238,.22), transparent 55%),
   linear-gradient(160deg,#0B1C35 0%,#0e2044 60%,#121233 100%);}
.hero-bg::after{content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(140,170,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(140,170,255,.08) 1px,transparent 1px);
  background-size:56px 56px;-webkit-mask-image:radial-gradient(circle at 40% 30%,#000,transparent 75%);mask-image:radial-gradient(circle at 40% 30%,#000,transparent 75%)}
.hero-grid{position:relative;display:grid;grid-template-columns:1.02fr 1fr;gap:54px;align-items:center}
.hero h1{color:#fff;font-size:clamp(32px,4.4vw,54px);margin:8px 0 0}
.hero .eyebrow{color:var(--cyan)}
.lead{color:#b9c6e6;font-size:clamp(16px,1.5vw,19px);margin-top:20px;max-width:37ch}
.lead strong{color:#fff;font-weight:600}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-trust{margin-top:26px;font-size:14px;color:#9fb0d6;display:flex;align-items:center;gap:9px}
.hero-trust strong{color:#dbe4fb;font-weight:600}
.dot-live{width:9px;height:9px;border-radius:50%;background:#34d399;box-shadow:0 0 0 4px rgba(52,211,153,.22);animation:pulse 2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 8px rgba(52,211,153,0)}}

/* browser mockup */
.browser{background:#0a1730;border:1px solid rgba(255,255,255,.12);border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow-lg);transform:perspective(1400px) rotateY(-4deg) rotateX(2deg)}
.hero-visual .browser:hover,.tech-visual .browser:hover{transform:none;transition:transform .5s}
.browser-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;background:#0f1f3d;border-bottom:1px solid rgba(255,255,255,.08)}
.browser-bar>span{width:11px;height:11px;border-radius:50%;background:#33436b}
.browser-bar>span:first-child{background:#ff5f57}.browser-bar>span:nth-child(2){background:#febc2e}.browser-bar>span:nth-child(3){background:#28c840}
.browser-url{margin-left:14px;font-size:12px;color:#7f92bd;background:#0a1730;border:1px solid rgba(255,255,255,.08);
  padding:4px 14px;border-radius:8px}
.browser img{width:100%;display:block}

/* ===== PROOF ===== */
.proof{background:var(--bg);padding:64px 0}
.proof-lead{text-align:center;color:var(--muted);font-weight:600;letter-spacing:.02em;margin-bottom:26px}
.proof-band{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px 34px}
.proof-client{display:flex;align-items:center;gap:16px}
.proof-shield img{width:52px;height:52px;object-fit:contain}
.proof-client strong{display:block;color:var(--ink);font-size:17px}
.proof-client span{font-size:14px;color:var(--muted)}
.proof-stats{list-style:none;display:flex;gap:38px;flex-wrap:wrap}
.proof-stats li{text-align:center}
.proof-stats b{display:block;font-size:34px;font-weight:800;color:var(--ink);
  background:var(--grad-primary);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.proof-stats span{font-size:13px;color:var(--muted)}

/* ===== WHY ===== */
.why{background:var(--bg-soft)}
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.why-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:.25s}
.why-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.why-ic{font-size:28px;width:56px;height:56px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(127,0,255,.12),rgba(79,172,254,.12));border-radius:14px;margin-bottom:16px}
.why-card h3{margin-bottom:8px}
.why-card p{font-size:15px;color:var(--muted)}

/* ===== FEATURES ===== */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat-card{border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.25s;position:relative;overflow:hidden;background:#fff}
.feat-card::before{content:"";position:absolute;left:0;top:0;height:4px;width:100%;background:var(--grad-primary);opacity:0;transition:.25s}
.feat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.feat-card:hover::before{opacity:1}
.feat-ic{font-size:30px;margin-bottom:16px}
.feat-card h3{margin-bottom:10px}
.feat-card p{font-size:15px;color:var(--muted)}
.feat-highlight{margin-top:24px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:var(--navy);color:#fff;border-radius:var(--radius-lg);padding:38px 44px;position:relative;overflow:hidden}
.feat-highlight::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 90% 20%,rgba(127,0,255,.5),transparent 60%)}
.feat-highlight-txt{position:relative;max-width:640px}
.feat-highlight-txt .eyebrow{color:var(--cyan)}
.feat-highlight h3{color:#fff;font-size:24px;margin-bottom:10px}
.feat-highlight p{color:#c3cfec;font-size:15px}
.feat-highlight-badge{position:relative;font-weight:800;font-size:24px;letter-spacing:.05em;color:#fff;
  min-width:96px;height:96px;display:flex;align-items:center;justify-content:center;border-radius:24px;
  background:var(--grad-primary);box-shadow:0 16px 40px rgba(127,0,255,.5)}

/* ===== HOW ===== */
.how{background:var(--navy);color:#fff}
.how .section-head h2{color:#fff}.how .eyebrow{color:var(--cyan)}
.how-steps{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:s}
.how-steps li{position:relative;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius);padding:26px 20px}
.how-n{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;
  font-weight:800;color:#fff;background:var(--grad-primary);margin-bottom:14px}
.how-steps h3{color:#fff;font-size:17px;margin-bottom:6px}
.how-steps p{font-size:14px;color:#b9c6e6}

/* ===== DEMOS ===== */
.demos{background:var(--bg-soft)}
.demo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.demo-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s}
.demo-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.demo-video{position:relative;aspect-ratio:16/9;background:#0a1730;cursor:pointer;overflow:hidden}
.demo-video img{width:100%;height:100%;object-fit:cover;transition:.4s}
.demo-video:hover img{transform:scale(1.04)}
.demo-video .play{position:absolute;inset:0;margin:auto;width:66px;height:66px;border-radius:50%;
  background:rgba(127,0,255,.92);box-shadow:0 10px 30px rgba(127,0,255,.5);transition:.2s}
.demo-video .play::after{content:"";position:absolute;top:50%;left:54%;transform:translate(-50%,-50%);
  border-style:solid;border-width:12px 0 12px 20px;border-color:transparent transparent transparent #fff}
.demo-video:hover .play{transform:scale(1.08)}
.demo-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.demo-card figcaption{padding:16px 20px}
.demo-card figcaption b{display:block;color:var(--ink);font-size:16px}
.demo-card figcaption span{font-size:13.5px;color:var(--muted)}

/* ===== TECH ===== */
.tech{background:var(--navy);color:#fff}
.tech-grid{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.tech-copy .eyebrow{color:var(--cyan)}.tech-copy h2{color:#fff;margin-bottom:24px}
.tech-block{margin-bottom:22px}
.tech-block h4{color:#fff;font-size:14px;letter-spacing:.02em;margin-bottom:12px;opacity:.9}
.pills{list-style:none;display:flex;flex-wrap:wrap;gap:9px}
.pills li{font-size:13px;color:#dbe4fb;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  padding:7px 14px;border-radius:999px}

/* ===== FAQ ===== */
.faq{background:var(--bg)}
.faq-wrap{max-width:820px}
.faq-list details{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:.2s}
.faq-list details[open]{border-color:rgba(127,0,255,.35);box-shadow:var(--shadow)}
.faq-list summary{list-style:none;cursor:pointer;padding:20px 24px;font-weight:600;color:var(--ink);
  display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";font-size:24px;color:var(--violet);font-weight:400;transition:.2s}
.faq-list details[open] summary::after{transform:rotate(45deg)}
.faq-list p{padding:0 24px 22px;color:var(--muted);font-size:15px}

/* ===== CONTACT ===== */
.contact{background:var(--bg-soft)}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}
.contact-copy h2{margin-bottom:14px}
.contact-copy p{color:var(--muted)}
.contact-list{list-style:none;margin-top:26px;display:grid;gap:14px}
.contact-list li{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:500}
.contact-list a{color:var(--violet)}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow)}
.contact-form .two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.fld{margin-bottom:16px;display:flex;flex-direction:column}
.fld label{font-size:13px;font-weight:600;color:var(--ink);margin-bottom:7px}
.fld input,.fld select,.fld textarea{font-family:inherit;font-size:15px;color:var(--ink);
  border:1px solid var(--line-strong);border-radius:11px;padding:12px 14px;background:#fdfdff;transition:.15s;width:100%}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:none;border-color:var(--violet);box-shadow:0 0 0 3px rgba(127,0,255,.14)}
.fld textarea{resize:vertical}
.hp{position:absolute;left:-9999px;opacity:0}
.form-note{margin-top:14px;font-size:14px;text-align:center;min-height:20px}
.form-note.ok{color:#0f9d58}.form-note.err{color:#d93025}

/* ===== FOOTER ===== */
.site-footer{background:var(--navy);color:#c3cfec;padding:56px 0 26px}
.footer-inner{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
.footer-logo{height:30px;background:#fff;border-radius:8px;padding:6px 10px;margin-bottom:14px}
.footer-brand p{font-size:14px;max-width:34ch}
.footer-by{margin-top:10px;color:#9fb0d6}.footer-by strong{color:#fff}
.footer-nav{display:flex;flex-direction:column;gap:11px}
.footer-nav a{font-size:14px;color:#c3cfec;opacity:.85}.footer-nav a:hover{opacity:1;color:#fff}
.footer-legal{margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#8496bd}

/* ===== TO TOP ===== */
.to-top{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;background:var(--grad-primary);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:0 10px 26px rgba(127,0,255,.4);
  opacity:0;pointer-events:none;transform:translateY(12px);transition:.25s;z-index:40}
.to-top.show{opacity:1;pointer-events:auto;transform:none}

/* ===== RESPONSIVE ===== */
@media (max-width:960px){
  .hero-grid,.tech-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual .browser{transform:none}
  .why-grid,.feat-grid,.demo-grid{grid-template-columns:repeat(2,1fr)}
  .how-steps{grid-template-columns:repeat(2,1fr)}
  .feat-highlight{flex-direction:column;text-align:center}
}
@media (max-width:760px){
  section{padding:64px 0}
  .nav{position:fixed;inset:72px 0 auto 0;flex-direction:column;background:#fff;gap:0;padding:10px 24px 22px;
    border-bottom:1px solid var(--line);box-shadow:0 20px 40px rgba(11,28,53,.12);transform:translateY(-140%);transition:.3s;align-items:stretch}
  .nav.open{transform:none}
  .nav a{padding:14px 0;border-bottom:1px solid var(--line)}
  .nav .nav-cta{margin-top:12px;text-align:center;border:0}
  .nav-toggle{display:flex}
  .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .proof-band{flex-direction:column;align-items:flex-start}
  .proof-stats{gap:24px}.proof-stats b{font-size:28px}
}
@media (max-width:560px){
  .why-grid,.feat-grid,.demo-grid,.how-steps,.contact-form .two{grid-template-columns:1fr}
  .btn{padding:13px 22px}
}