:root{
  --blue:#2563EB;--blue-6:#1D4ED8;--red:#DC2626;--navy:#0A1024;--navy-2:#05132C;
  --ink:#111827;--muted:#6B7280;--border:#E5E7EB;--soft:#F5F7FB;--white:#fff;
  --r:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--white);line-height:1.6;font-size:16px}
img,svg{display:block;max-width:100%}
a{color:var(--blue)}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.narrow{max-width:800px}
h1,h2,h3{line-height:1.2;margin:0 0 .5em}
h2{font-size:clamp(24px,3vw,32px)}
h3{font-size:18px}

/* header */
.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.top-in{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand span{display:flex;flex-direction:column;line-height:1.1}
.brand b{font-size:18px;letter-spacing:.06em}
.brand small{font-size:12px;color:var(--muted)}
.nav{display:flex;gap:22px;margin-left:auto}
.nav a{color:var(--ink);text-decoration:none;font-weight:500;font-size:15px}
.nav a:hover{color:var(--blue)}
.menu{display:none;background:none;border:0;padding:8px;cursor:pointer}
.menu span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0}

/* buttons */
.btn{display:inline-block;background:var(--blue);color:#fff;text-decoration:none;border:0;border-radius:10px;padding:13px 22px;font-weight:600;font-size:16px;cursor:pointer;font-family:inherit;transition:background .15s}
.btn:hover{background:var(--blue-6)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-ghost{background:transparent;border:1.5px solid rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-full{width:100%}
.btn[disabled]{opacity:.6;cursor:wait}
.link{background:none;border:0;color:var(--blue);font-weight:600;cursor:pointer;padding:0;font:inherit;font-weight:600;margin-top:auto;text-align:left}

/* hero */
.hero{background:radial-gradient(120% 120% at 80% 30%,#1B2A6B 0%,var(--navy) 60%);color:#fff;padding:72px 0 80px}
.hero-in{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:13px;color:#93C5FD;font-weight:600;margin:0 0 12px}
.hero h1{font-size:clamp(30px,4.6vw,50px);margin-bottom:18px}
.lead{font-size:18px;color:#CBD5E1;max-width:620px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 22px}
.ticks{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px 22px;color:#E2E8F0;font-size:15px}
.ticks li::before{content:"✓";color:#4ADE80;font-weight:700;margin-right:6px}
.hero-art .mag{width:100%;max-width:340px;margin:0 auto}
.field{animation:pulse 3s ease-in-out infinite}
@keyframes pulse{50%{opacity:.15}}
@media (prefers-reduced-motion:reduce){.field{animation:none}}

/* sections */
.sec{padding:72px 0}
.sec-soft{background:var(--soft)}
.sec-dark{background:var(--navy-2);color:#fff}
.sub{color:var(--muted);max-width:720px;margin:0 0 32px}
.grid{display:grid;gap:20px}
.cards{grid-template-columns:repeat(4,1fr)}
.card{display:flex;flex-direction:column;border:1px solid var(--border);border-radius:var(--r);padding:22px;background:#fff;transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:0 10px 30px rgba(17,24,39,.08);transform:translateY(-2px)}
.card p{color:var(--muted);font-size:15px;margin:0 0 12px}
.card-alt{background:#EFF6FF;border-color:#BFDBFE}
.ico{width:48px;height:48px;border-radius:12px;background:#EFF6FF;display:grid;place-items:center;margin-bottom:14px}
.ico svg{width:30px;height:30px;fill:none;stroke:var(--blue);stroke-width:2.4;stroke-linejoin:round;stroke-linecap:round}
.spec{list-style:none;padding:0;margin:0 0 16px;font-size:14px}
.spec li{padding:4px 0;border-top:1px dashed var(--border)}
.apps{grid-template-columns:repeat(3,1fr);margin-top:24px}
.app{background:#fff;border-radius:var(--r);padding:20px;border-left:4px solid var(--blue)}
.app b{display:block;margin-bottom:4px}
.app span{color:var(--muted);font-size:15px}
.steps{list-style:none;counter-reset:s;padding:0;margin:28px 0 0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.steps li{counter-increment:s;padding:22px;border:1px solid var(--border);border-radius:var(--r)}
.steps li::before{content:counter(s);display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--blue);color:#fff;font-weight:700;margin-bottom:12px}
.steps b{display:block;margin-bottom:4px}
.steps span{color:var(--muted);font-size:15px}

/* quote */
.quote{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}
.quote-info p{color:#CBD5E1}
.contact-list{list-style:none;padding:0;margin:24px 0 0}
.contact-list li{padding:10px 0;border-top:1px solid rgba(255,255,255,.12);color:#CBD5E1}
.contact-list span{display:inline-block;width:80px;color:#94A3B8;font-size:14px}
.contact-list a{color:#fff;font-weight:600}
.form{background:#fff;color:var(--ink);border-radius:18px;padding:28px;display:grid;gap:14px}
.form label{display:grid;gap:6px;font-size:14px;font-weight:500}
.form input,.form select,.form textarea{font:inherit;font-size:15px;padding:11px 12px;border:1px solid #D1D5DB;border-radius:10px;background:#FAFAFA;width:100%;color:var(--ink)}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid #93C5FD;border-color:var(--blue);background:#fff}
.form .bad{border-color:var(--red);background:#FEF2F2}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-msg{margin:0;font-weight:600;min-height:1.2em}
.form-msg.ok{color:#15803D}
.form-msg.err{color:var(--red)}
.fine{margin:0;font-size:13px;color:var(--muted)}

/* faq */
details{border-bottom:1px solid var(--border);padding:16px 0}
summary{cursor:pointer;font-weight:600;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--blue);font-size:22px;line-height:1}
details[open] summary::after{content:"−"}
details p{color:var(--muted);margin:10px 0 0}

/* footer */
.foot{background:var(--navy);color:#CBD5E1;padding:48px 0 20px;font-size:15px}
.foot-in{display:grid;grid-template-columns:1fr 1.4fr 1fr;gap:28px}
.foot p{margin:0 0 8px}
.foot a{color:#fff}
.foot-brand{color:#fff;font-size:20px;letter-spacing:.08em}
.copy{margin-top:28px;padding-top:16px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#94A3B8}
.float-cta{display:none}

@media (max-width:980px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .quote{grid-template-columns:1fr;gap:28px}
}
@media (max-width:760px){
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;gap:0;border-bottom:1px solid var(--border);padding:8px 20px}
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--border)}
  .menu{display:block;margin-left:auto}
  .top .btn-sm{display:none}
  .hero{padding:48px 0 56px}
  .hero-in{grid-template-columns:1fr}
  .hero-art{display:none}
  .lead{font-size:16px}
  .apps,.foot-in{grid-template-columns:1fr}
  .row2,.row3{grid-template-columns:1fr}
  .sec{padding:52px 0}
  .form{padding:20px}
  .float-cta{display:block;position:fixed;right:16px;bottom:16px;z-index:30;background:var(--blue);color:#fff;text-decoration:none;font-weight:600;padding:12px 18px;border-radius:999px;box-shadow:0 8px 24px rgba(37,99,235,.4)}
}
@media (max-width:520px){
  .cards,.steps{grid-template-columns:1fr}
  .wrap{padding:0 16px}
}