a,a:visited,a:hover,a:active,a:focus {    color: inherit;    text-decoration: none;}
body{
margin:0;
font-family:Arial,sans-serif;
background:#ffffff;
color:white;
padding-bottom:80px;
}
header{
background:#F5F2F2;
padding:20px;
text-align:center;
position:sticky;
top:0;
z-index:10;
box-shadow:0 2px 8px rgba(0,0,0,.3);
}
.logo{
font-size:28px;
font-weight:bold;
}
.subtitle{
color:#000000;
font-size:14px;
}
main{
padding:20px;
max-width:900px;
margin:auto;
}
.card{
background:#000000;
border-radius:16px;
padding:22px;
margin-bottom:18px;
box-shadow:0 4px 12px rgba(0,0,0,.25);
}
.card h2,.card h3{
margin-top:0;
}
.btn{
display:inline-block;
padding:12px 18px;
border-radius:10px;
background:#eab308;
color:#111;
text-decoration:none;
font-weight:bold;
margin-top:10px;
}
.bottom-nav{
position:fixed;
bottom:0;
left:0;
right:0;
background:#000000;
display:flex;
justify-content:space-around;
padding:12px 0;
border-top:1px solid #334155;
}
.bottom-nav a{
color:white;
text-decoration:none;
font-size:14px;
text-align:center;
}
.install-banner{
display:none;
background:#eab308;
color:#111;
padding:14px;
text-align:center;
font-weight:bold;
}
.install-banner button{
margin-left:10px;
padding:8px 12px;
border:none;
border-radius:8px;
cursor:pointer;
}