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

body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
    background:#f5f7fb;
    color:#222;
}

.container{
    max-width:1200px;
    margin:auto;
    padding:30px;
}

header{
    text-align:center;
    margin-bottom:40px;
}

header h1{
    font-size:38px;
    color:#0d47a1;
}

header p{
    margin-top:10px;
    color:#666;
    font-size:18px;
}

section{
    margin-bottom:40px;
}

section h2{
    margin-bottom:20px;
    color:#333;
}

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

.card{
    background:#fff;
    border-radius:14px;
    padding:25px;
    text-decoration:none;
    color:#222;
    box-shadow:0 5px 15px rgba(0,0,0,.08);
    transition:.25s;
}

.card:hover{
    transform:translateY(-5px);
    box-shadow:0 10px 25px rgba(0,0,0,.12);
}

.card h3{
    margin-bottom:10px;
    font-size:22px;
}

.card p{
    color:#666;
    font-size:15px;
}

.card[href="#"]{
    cursor:default;
    opacity:.75;
}

.card[href="#"]:hover{
    transform:none;
    box-shadow:0 5px 15px rgba(0,0,0,.08);
}

@media (max-width:768px){

    .container{
        padding:20px;
    }

    header h1{
        font-size:32px;
    }

    .grid{
        grid-template-columns:1fr;
    }

}