body{
    margin:0;
    background:#0f172a;
    color:#e2e8f0;
    font-family:system-ui;
}
.app{
    max-width:920px;
    margin:auto;
    padding:20px;
}
h1{
    text-align:center;
}
.card{
    background:#1e293b;
    padding:16px;
    border-radius:12px;
    margin-top:16px;
}
.main #code{
    font-size:28px;
    text-align:center;
    margin-bottom:12px;
    word-break:break-all;
}
.actions{
    text-align:center;
}
button{
    margin:5px;
    padding:8px 12px;
    border:none;
    border-radius:8px;
    background:#3b82f6;
    color:#fff;
    cursor:pointer;
}
button:hover{
    background:#2563eb;
}
input{
    padding:8px;
    margin:5px;
    border:none;
    border-radius:8px;
}
.grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:16px;
}
.rank-item{
    display:flex;
    justify-content:space-between;
    padding:6px 0;
    border-bottom:1px solid #334155;
}
a{
    color:#60a5fa;
    text-decoration:none;
}
.toggle{
    display:block;
    margin:5px;
    font-size:13px;
}
pre{
    white-space:pre-wrap;
    word-break:break-word;
}