*{
margin:0;
padding:0;
box-sizing:border-box;
}

body{
font-family:Arial,sans-serif;
background:#f5f7fb;
color:#222;
}

.container{
width:90%;
max-width:1200px;
margin:auto;
}

header{
background:#0f172a;
padding:20px 0;
}

header h1{
color:white;
}

nav{
margin-top:10px;
}

nav a{
color:white;
text-decoration:none;
margin-right:20px;
}

.hero{
background:white;
padding:50px;
margin-top:30px;
border-radius:15px;
box-shadow:0 2px 15px rgba(0,0,0,.08);
}

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

.card{
background:white;
padding:25px;
border-radius:15px;
box-shadow:0 2px 15px rgba(0,0,0,.08);
}

.card h3{
margin-bottom:15px;
}

.card a{
display:inline-block;
margin-top:15px;
padding:10px 20px;
background:#2563eb;
color:white;
text-decoration:none;
border-radius:8px;
}

footer{
margin-top:50px;
background:#0f172a;
color:white;
padding:20px;
text-align:center;
}