*{margin:0;padding:0;box-sizing:border-box}
body{background:#000;color:#fff;font-family:'Segoe UI',sans-serif;line-height:1.7}

.banner-header{
    background:#000;
    padding:24px 0;
}

.banner-container{
    max-width:900px;
    margin:0 auto;
    padding:0 20px;
}

.banner-container img{
    display:block;
    width:100%;
    height:auto;
    border-radius:12px;
}

.container{width:min(1100px,92%);margin:auto}

.section{padding:5rem 0}
.alt{background:#101010}
h2{font-size:2rem;margin-bottom:2rem}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem}
.card{background:#181818;border:1px solid #2a2a2a;padding:1.5rem;border-radius:12px}
ul{padding-left:1.5rem}
.notice{margin-top:2rem;padding:1rem;border-left:4px solid #0078d4;background:#181818}
.email{font-size:1.4rem;font-weight:bold;color:#5ebcff;margin:1rem 0}
.button{display:inline-block;background:#0078d4;color:#fff;text-decoration:none;margin:1rem;padding:1rem 2rem;border-radius:8px;font-weight:600}
.center{text-align:center}
footer{border-top:1px solid #222;padding:2rem 0;text-align:center}
@media(max-width:768px){
.section{padding:3rem 0}
h2{font-size:1.6rem}
}