html{

    scroll-behavior:smooth;

}body{
    margin:0;
    font-family:Arial, sans-serif;
    background:#f4f4f4;
}

header{
    background:#6b3e26;
    color:white;
    text-align:center;
    padding:40px;
}

header h1{
    margin:0;
}

.menu{
    text-align:center;
    margin-bottom:50px;
}

.btn-main,
.btn-download{

    display:inline-block;
    padding:15px 25px;
    margin:10px;
    border-radius:10px;
    text-decoration:none;
    color:white;
    font-weight:bold;
}

.btn-main{
    background:#1976d2;
    transition:.3s;
}

.btn-main:hover{
    transform:translateY(-5px);
    box-shadow:0 15px 30px rgba(0,0,0,.25);
}

.btn-download{
    background:#2e7d32;
    display:inline-flex;
    align-items:center;
    gap:12px;
    transition:.3s;
}

.btn-download:hover{

    transform:translateY(-4px);
    box-shadow:0 12px 25px rgba(0,0,0,.25);

}

.btn-main:active{

    transform:scale(.95);

}

footer{
    background:#6b3e26;
    color:white;
    text-align:center;
    padding:20px;
}

.webgl-section{
    width:95%;
    margin:auto;
    margin-top:40px;
    text-align:center;
}

.webgl-section iframe{
    border:none;
    border-radius:15px;
    box-shadow:0 5px 20px rgba(0,0,0,0.2);
}

.download{
    text-align:center;
    margin-top:40px;
}

.tentang{
    max-width:900px;
    margin:auto;
    text-align:center;
    padding:40px;
}

.hero{
    min-height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;

    background:
        linear-gradient(
            rgba(0,0,0,0.55),
            rgba(0,0,0,0.55)
        ),
        url("banner.png");

    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    width:100%;

    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;

    text-align:center;
    color:white;

    box-sizing:border-box;
}

.hero h1{
    font-size:48px;
    margin-bottom:15px;
}

.hero p{
    font-size:20px;
}

.fitur{
    display:flex;
    justify-content:center;
    flex-wrap:wrap;
    gap:20px;
    padding:40px;
}

.card{
    width:280px;
    background:white;
    padding:25px;
    border-radius:15px;
    box-shadow:0 5px 15px rgba(0,0,0,0.15);
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    text-align:center;
    padding:40px 30px;
    transition:all .35s ease;
    cursor:pointer;

}

.card h3{
    color:#6b3e26;
}

.icon-card{

    font-size:60px;
    color:#c78b2c;
    display:block;
    margin-bottom:20px;

}

.card i{

    width:45px;
    height:45px;
    border-radius:50%;
    display:flex;
    justify-content:center;
    align-items:center;
    margin:0 auto 20px;
    background:#f5efe3;
    color:#8B5A2B;
    font-size:40px;
    margin-bottom:20px;

}

.card:hover{

    transform:translateY(-10px);
    box-shadow:0 20px 40px rgba(0,0,0,.18);

}

.card:hover i{

    transform:scale(1.15);
    transition:.3s;

}