body { font-family: 'Segoe UI', sans-serif; margin:0; padding:0; background:#fafafa; color:#222;}
header.banner { background: linear-gradient(90deg, #00b4db, #0083b0); color:#fff; text-align:center; padding:60px 20px;}
header.banner .logo { width:120px; height:auto; margin-bottom:20px; border-radius:14px;}
.buy-btn { background:#ff8c00; color:#fff; padding:12px 25px; text-decoration:none; border-radius:10px; font-weight:bold; transition:0.3s;}
.buy-btn:hover { background:#ffa733;}
section { padding:50px 20px; max-width:850px; margin:0 auto;}
section h2 { color:#0083b0; margin-bottom:15px;}
ul { list-style-type: disc; padding-left:20px;}
footer { text-align:center; padding:20px; background:#0083b0; color:#fff;}