:root{
  --blue:#0b4f8a;
  --red:#c62828;
  --dark:#1f2933;
  --gray:#6b7280;
  --light:#f5f7fa;
  --white:#ffffff;
}

*{box-sizing:border-box}

body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--dark);
  line-height:1.7;
}

a{text-decoration:none;color:var(--blue)}

header{
  border-bottom:1px solid #e5e7eb;
  background:#fff;
  position:sticky;
  top:0;
  z-index:10;
}

.container{
  max-width:1200px;
  margin:auto;
  padding:0 16px;
}

.top{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:16px 0;
}

nav a{
  margin-left:24px;
  font-weight:500;
}

.hero{
  background:linear-gradient(135deg,var(--blue),#083b66);
  color:#fff;
  padding:90px 0;
}

.hero h1{
  font-size:42px;
  max-width:1000px;
}

.hero p{
  font-size:18px;
  max-width:850px;
}

.btn{
  display:inline-block;
  margin-top:28px;
  padding:14px 30px;
  background:var(--red);
  color:#fff;
  border-radius:6px;
  font-weight:600;
}

section{padding:72px 0}

.cards{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:24px;
}

.card{
  border:1px solid #e5e7eb;
  border-radius:10px;
  padding:28px;
  background:#fff;
}

form{max-width:520px}

input, textarea{
  width:100%;
  padding:12px;
  margin-bottom:12px;
  border:1px solid #d1d5db;
  border-radius:6px;
}

button{
  background:var(--red);
  color:#fff;
  border:none;
  padding:14px 26px;
  border-radius:6px;
  font-weight:600;
  cursor:pointer;
}

footer{
  background:var(--light);
  padding:40px 0;
  font-size:14px;
}

@media(max-width:768px){
  .hero h1{font-size:30px}
  nav{display:none}
}