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

body{
    font-family:Arial, Helvetica, sans-serif;
    background:#0B5ED7;
    color:white;
}

header{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:20px 60px;
    background:rgba(0,0,0,0.25);
    backdrop-filter:blur(10px);
}

.logo{
    font-size:34px;
    font-weight:bold;
    color:white;
}

nav a{
    color:white;
    text-decoration:none;
    margin-left:30px;
    font-size:18px;
    transition:0.3s;
}

nav a:hover{
    color:#FFD700;
}

.hero{
    min-height:100vh;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    text-align:center;
    padding:120px 40px;
}

.hero h1{
    font-size:72px;
    margin-bottom:20px;
}

.hero h2{
    font-size:36px;
    margin-bottom:30px;
}

.hero p{
    font-size:24px;
    width:80%;
    max-width:900px;
    line-height:1.8;
    margin-bottom:40px;
}

.btn{
    display:inline-block;
    background:white;
    color:#0B5ED7;
    text-decoration:none;
    padding:18px 45px;
    border-radius:50px;
    font-size:20px;
    font-weight:bold;
    transition:0.3s;
}

.btn:hover{
    background:#FFD700;
    color:black;
    transform:scale(1.05);
}

section{
    padding:100px 60px;
}

h3{
    font-size:42px;
    text-align:center;
    margin-bottom:40px;
}

.cards{
    display:flex;
    justify-content:center;
    gap:30px;
    flex-wrap:wrap;
}

.card{
    width:300px;
    background:white;
    color:#222;
    padding:30px;
    border-radius:15px;
    text-align:center;
    box-shadow:0 10px 25px rgba(0,0,0,0.2);
    transition:0.3s;
}

.card:hover{
    transform:translateY(-10px);
}

.card h4{
    margin-bottom:15px;
    font-size:24px;
}
.card h3{
    color:#222;
    margin-bottom:15px;
    font-size:24px;
}

.card p{
    color:#555;
    line-height:1.6;
}

footer{
    background:#062F6B;
    text-align:center;
    padding:30px;
    font-size:18px;
}
/* ===== Version mobile ===== */
@media (max-width:768px){

header{
    flex-direction:column;
    padding:15px;
}

.logo{
    font-size:28px;
    margin-bottom:10px;
}

nav{
    display:flex;
    flex-wrap:wrap;
    justify-content:center;
    gap:15px;
}

nav a{
    margin:0;
    font-size:18px;
}

.hero{
    padding:140px 20px 60px;
}

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

.hero h2{
    font-size:24px;
}

.hero p{
    width:100%;
    font-size:18px;
}

section{
    padding:60px 20px;
}

h3{
    font-size:34px;
}

.cards{
    flex-direction:column;
    align-items:center;
}

.card{
    width:100%;
    max-width:350px;
}

.card h3{
    font-size:24px;
}

.card h4{
    font-size:22px;
}

footer{
    font-size:16px;
    padding:20px;
}

}