:root{
  --navy:#0f2d4a;
  --blue:#1f6feb;
  --light:#f5f7fb;
  --text:#1d2a3a;
  --muted:#5f6b7a;
  --line:#dfe5ec;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:#fff;line-height:1.6}
.container{width:min(1100px,92%);margin:auto}
header{background:var(--navy);color:#fff}
.nav{display:flex;justify-content:space-between;align-items:center;padding:18px 0}
.brand{font-size:26px;font-weight:700}
.brand small{display:block;font-size:12px;font-weight:400;opacity:.85}
nav a{color:#fff;text-decoration:none;margin-left:22px;font-size:15px}
.hero{background:linear-gradient(180deg,#f7fbff,#fff);padding:82px 0 64px}
.hero h1{font-size:46px;line-height:1.15;margin:0 0 18px;color:var(--navy)}
.hero p{max-width:760px;font-size:20px;color:var(--muted)}
.btn{display:inline-block;margin-top:16px;background:var(--blue);color:#fff;text-decoration:none;padding:12px 20px;border-radius:8px;font-weight:700}
section{padding:62px 0}
.alt{background:var(--light)}
h2{font-size:30px;color:var(--navy);margin-top:0}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{border:1px solid var(--line);border-radius:14px;padding:24px;background:#fff}
.card h3{margin-top:0;color:var(--navy)}
.footer{background:#0c2238;color:#dbe5ef;padding:30px 0}
.footer a{color:#fff}
.notice{border-left:4px solid var(--blue);padding:14px 18px;background:#f3f8ff;margin:22px 0}
ul{padding-left:22px}
@media(max-width:800px){
  .grid{grid-template-columns:1fr}
  .hero h1{font-size:36px}
  .nav{align-items:flex-start;gap:14px;flex-direction:column}
  nav a{margin:0 16px 0 0}
}