:root{
  --bg:#f5f7fb;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --primary:#1d4ed8;
  --primary-dark:#163ea8;
  --border:#e5e7eb;
}

*{
  box-sizing:border-box;
}

body{
  margin:0;
  font-family:Arial, Helvetica, sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
}

.container{
  max-width:1100px;
  margin:auto;
  padding:24px;
}

header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:18px 0;
}

.logo{
  font-size:24px;
  font-weight:700;
  text-decoration:none;
  color:#111827;
}

nav a{
  margin-left:20px;
  text-decoration:none;
  color:var(--text);
  font-weight:600;
}

.hero{
  background:linear-gradient(135deg,#eaf1ff,#ffffff);
  border:1px solid var(--border);
  border-radius:18px;
  padding:60px 40px;
}

.hero h1{
  margin-top:0;
  font-size:40px;
}

.lead{
  font-size:18px;
  color:var(--muted);
  max-width:700px;
}

.button{
  display:inline-block;
  margin-top:20px;
  padding:14px 20px;
  border-radius:10px;
  background:var(--primary);
  color:white;
  text-decoration:none;
  font-weight:bold;
}

.grid{
  margin-top:30px;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:20px;
}

.card{
  background:white;
  border:1px solid var(--border);
  padding:24px;
  border-radius:16px;
}

.page{
  background:white;
  border:1px solid var(--border);
  padding:36px;
  border-radius:16px;
  margin-top:20px;
}

footer{
  text-align:center;
  margin-top:40px;
  color:var(--muted);
  font-size:14px;
}

a{
  color:var(--primary);
}