*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial, Helvetica, sans-serif;
}

html{
    scroll-behavior:smooth;
}

body{
    color:#333;
    line-height:1.6;
}

.container{
    width:90%;
    max-width:1200px;
    margin:auto;
    display:flex;
    justify-content:space-between;
    align-items:center;
}

header{
    position:fixed;
    width:100%;
    background:#0f172a;
    color:#fff;
    padding:18px 0;
    z-index:1000;
}

.logo{
    color:#38bdf8;
}

nav a{
    color:white;
    text-decoration:none;
    margin-left:25px;
    transition:.3s;
}

nav a:hover{
    color:#38bdf8;
}

.hero{
    height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
    text-align:center;
    background:linear-gradient(135deg,#0f172a,#2563eb);
    color:white;
    padding:20px;
}

.hero h1{
    font-size:52px;
    margin-bottom:20px;
}

.hero p{
    max-width:700px;
    margin:auto;
    font-size:20px;
}

button{
    margin-top:30px;
    padding:15px 35px;
    border:none;
    border-radius:30px;
    background:#38bdf8;
    color:white;
    cursor:pointer;
    font-size:17px;
    transition:.3s;
}

button:hover{
    background:#0ea5e9;
}

.section{
    padding:100px 10%;
    text-align:center;
}

.section h2{
    margin-bottom:30px;
    color:#0f172a;
}

.gray{
    background:#f5f7fa;
}

.cards{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:25px;
    margin-top:40px;
}

.card{
    background:white;
    padding:30px;
    border-radius:12px;
    box-shadow:0 5px 15px rgba(0,0,0,.08);
    transition:.3s;
}

.card:hover{
    transform:translateY(-8px);
}

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

@media(max-width:768px){

.container{
    flex-direction:column;
}

nav{
    margin-top:15px;
}

nav a{
    margin:0 10px;
}

.hero h1{
    font-size:38px;
}

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

}