:root{
  --brand:#2447A3;
  --brand-ink:#0E1A39;
  --ink:#1F2937;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --muted:#6B7280;
  --ring:#C7D2FE;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  color:var(--ink); background:var(--bg); line-height:1.75;
}
img{max-width:100%; display:block}
.container{max-width:1100px;margin:0 auto;padding:20px}
.header{background:#fff; border-bottom:1px solid #E5E7EB; position:sticky; top:0; z-index:50; backdrop-filter:saturate(1.2) blur(6px)}
.nav{display:flex;align-items:center;gap:20px}
.nav img{height:84px} /* bigger logo */
.nav ul{list-style:none;margin:0 0 0 auto;padding:0;display:flex;gap:10px;flex-wrap:wrap}
.nav a{display:block;padding:10px 12px;text-decoration:none;color:var(--brand-ink);font-weight:700;border-radius:12px;transition:.2s ease}
.nav a:hover,.nav a:focus-visible{background:#EEF2FF; outline:none; box-shadow:0 0 0 3px var(--ring)}
.hero{background:linear-gradient(180deg,#ECF2FF 0,#FFFFFF 100%); padding:80px 0}
.hero h1{margin:0 0 12px;font-size:clamp(28px,4vw,44px);color:var(--brand-ink);letter-spacing:.3px; animation:fadeUp .6s ease both}
.hero p{margin:0;color:var(--muted);font-size:clamp(16px,2vw,19px)}
@keyframes fadeUp{from{opacity:0; transform:translateY(8px)} to{opacity:1; transform:translateY(0)}}
.section{padding:54px 0}
.section--alt{background:#FFFFFF}
.section h2{margin:0 0 14px;font-size:clamp(22px,3vw,30px);color:var(--brand-ink)}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.card{background:var(--card);border:1px solid #E5E7EB;border-radius:18px;padding:22px; transition:.2s ease; box-shadow:0 6px 10px rgba(20,40,120,.04)}
.card:hover{transform:translateY(-2px); box-shadow:0 10px 18px rgba(20,40,120,.08)}
.card h3{margin:0 0 10px;color:var(--brand-ink)}
.card p{margin:0 0 10px}
.figure{margin:16px 0 0}
.figure img{border:1px solid #E5E7EB;border-radius:14px}
.flow-diagram{width:min(720px,60%); height:auto; margin:0 auto} /* smaller flow diagrams */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.kv{background:#FFFFFF;border:1px solid #E5E7EB;border-radius:18px;padding:18px; box-shadow:0 6px 10px rgba(20,40,120,.04)}
.kv h3{margin:0 0 10px;color:var(--brand-ink)}
.kv dl{display:grid;grid-template-columns:140px 1fr;gap:10px;margin:0}
.kv dt{font-weight:700;color:var(--muted)}
.kv dd{margin:0}
.footer{background:#fff;border-top:1px solid #E5E7EB}
.footer p{margin:0;color:#6B7280}
.small{font-size:14px;color:#6B7280}
.cta{display:inline-block;margin-top:12px;padding:12px 16px;border-radius:14px;background:var(--brand);color:#fff;text-decoration:none;font-weight:800; letter-spacing:.2px; box-shadow:0 8px 16px rgba(36,71,163,.18); transition:.2s ease}
.cta:hover,.cta:focus-visible{filter:brightness(1.05); transform:translateY(-1px); outline:none; box-shadow:0 10px 22px rgba(36,71,163,.22)}
:focus-visible{outline:none; box-shadow:0 0 0 3px var(--ring)}
@media (max-width:800px){
  .cards{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr}
  .nav img{height:72px}
}