:root{
  --bg:#0b1020; --bg2:#0f1530; --card:#ffffff; --muted:#5b647a;
  --text:#0f172a; --brand:#0F2A5A; --brand2:#1E3A8A; --border:#e7e9ef;
  --hero-grad: radial-gradient(1200px 700px at 70% -10%, rgba(92,155,255,.25), transparent 60%),
               radial-gradient(900px 600px at -10% 20%, rgba(110,231,255,.2), transparent 60%),
               linear-gradient(180deg, var(--bg), var(--bg2));
}

/* Base */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Helvetica,Arial;color:var(--text);background:#f7f9fc}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1180px;margin:0 auto;padding:0 16px}

/* Header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:saturate(120%) blur(8px);border-bottom:1px solid var(--border)}
.head-row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;gap:16px}
nav a{margin-left:22px;font-size:14px;color:#334155}
nav a:hover{color:var(--brand)}
.brand img{height:clamp(36px, 6vw, 56px); width:auto; display:block;}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:12px;font-weight:600;gap:8px;border:1px solid var(--brand);background:var(--brand);color:#fff}
.btn.ghost{background:#fff;color:var(--brand)}
.btn.light{border-color:#cbd5e1;background:#fff;color:#0f172a}
.btn:focus-visible{outline:3px solid rgba(37,99,235,.5);outline-offset:2px;border-radius:12px}

/* Mobile nav */
.mobile-nav{ display:none; } /* important: hidden on desktop */
.menu-toggle{display:none;align-items:center;gap:8px;border:1px solid var(--border);
  background:#fff;border-radius:10px;padding:8px 10px;font-weight:600;color:#0f172a}
@media (max-width: 840px){
  nav{display:none !important;}
  .menu-toggle{display:inline-flex}
  .mobile-nav{
    display:none;position:absolute;left:0;right:0;top:100%;
    background:#fff;border-bottom:1px solid var(--border);z-index:60;
    box-shadow:0 8px 20px rgba(2,6,23,.08)
  }
  .mobile-nav a{display:block;padding:14px 16px;border-top:1px solid var(--border);color:#334155}
  header.open .mobile-nav{display:block}
}

/* Sections & utilities */
section{padding:56px 0}
.card{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:20px}
.chip{display:inline-block;padding:4px 10px;border-radius:999px;background:#eef2ff;color:#3b62f6;font-size:12px;font-weight:700}
.muted{color:var(--muted)}
.title{font-size:clamp(24px, 3.2vw, 28px);font-weight:800;margin:0 0 10px;color:#0d1226}
.grid{display:grid;gap:16px}
@media(min-width:700px){.cols-2{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1040px){.cols-3{grid-template-columns:repeat(3,1fr)}}
.row{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* Hero */
.hero{background:var(--hero-grad);color:#eaf2ff}
.hero .inner{display:grid;grid-template-columns:1fr;gap:32px;padding:56px 0}
@media(min-width:960px){.hero .inner{grid-template-columns:1.05fr .95fr;padding:78px 0}}
h1{margin:0;font-weight:800;font-size:clamp(28px,4.2vw,52px);line-height:1.05;color:#f8fbff}
.lead{margin-top:12px;font-size:clamp(16px, 2.5vw, 18px);max-width:60ch;color:#d8e4ff}
.cta{margin-top:20px;display:flex;gap:12px;flex-wrap:wrap}
@media (max-width: 520px){ .btn{width:100%} .cta{flex-direction:column} }

/* Anchor offset for sticky header */
[id]{scroll-margin-top:80px}

/* Footer */
.footer{border-top:1px solid var(--border);padding:24px 0;color:#667085;font-size:14px}

/* Reduce motion */
@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.01ms !important;animation-iteration-count:1 !important;
    transition-duration:0.01ms !important;scroll-behavior:auto !important}
}