```css
*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'Segoe UI',sans-serif;
}

body{
    background:#0d0d0d;
    color:white;
}

/* HERO */

.hero{
    text-align:center;
    padding:100px 20px 70px;
}

.hero h1{
    font-size:4rem;
    color:orange;
    margin-bottom:15px;
}

.hero p{
    max-width:750px;
    margin:auto;
    color:#cfcfcf;
    font-size:1.1rem;
    line-height:1.8;
}

/* CONTAINER */

.container{
    width:90%;
    max-width:1400px;
    margin:auto;
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
    gap:30px;
    padding-bottom:60px;
}

/* CARDS */

.card{
    background:#171717;
    padding:35px;
    border-radius:16px;
    border-top:4px solid orange;
    box-shadow:0 10px 30px rgba(0,0,0,0.3);
    transition:.3s;
}

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

.card-icon{
    font-size:45px;
    color:orange;
    margin-bottom:20px;
}

.card h2{
    color:orange;
    margin-bottom:25px;
    font-size:1.8rem;
}

/* CONTACT */

.contact-box{
    margin-bottom:25px;
}

.contact-box h3{
    color:white;
    margin-bottom:8px;
}

.contact-box p{
    color:#bfbfbf;
}

.contact-box span{
    color:orange;
    font-size:0.9rem;
}

/* SOCIALS */

.social-text{
    color:#cfcfcf;
    line-height:1.8;
}

.social-icons{
    margin-top:40px;
    display:flex;
    gap:20px;
}

.social-icons a{
    width:60px;
    height:60px;
    display:flex;
    align-items:center;
    justify-content:center;
    text-decoration:none;
    background:orange;
    color:black;
    border-radius:50%;
    font-size:26px;
    transition:.3s;
}

.social-icons a:hover{
    transform:scale(1.1);
    background:white;
}

/* BANK */

.bank-details{
    margin-bottom:25px;
}

.bank-details h3{
    color:orange;
    margin-bottom:15px;
}

.bank-details p{
    margin-bottom:10px;
    color:#d8d8d8;
}

.notice{
    background:#111;
    border-left:4px solid orange;
    padding:15px;
    color:#cfcfcf;
    line-height:1.7;
    border-radius:8px;
}

/* BUTTON */

.back-btn{
    display:block;
    width:220px;
    margin:20px auto 60px;
    text-align:center;
    padding:14px 25px;
    background:orange;
    color:black;
    text-decoration:none;
    font-weight:bold;
    border-radius:8px;
    transition:.3s;
}

.back-btn:hover{
    background:white;
}

/* MOBILE */

@media(max-width:768px){

    .hero h1{
        font-size:2.8rem;
    }

    .hero{
        padding:70px 20px 50px;
    }

}
```