body{
    margin:0;
    font-family:Arial,sans-serif;
    background:#f5f5f5;
}
.container{
    max-width:430px;
    margin:auto;
    padding:15px;
}
.card{
    background:#fff;
    padding:15px;
    border-radius:16px;
    margin-bottom:15px;
    box-shadow:0 3px 10px rgba(0,0,0,.08);
}
.input{
    width:100%;
    padding:14px;
    border:none;
    border-radius:12px;
    background:#eee;
    margin-bottom:12px;
}
.btn{
    width:100%;
    padding:14px;
    border:none;
    border-radius:12px;
    background:#ea580c;
    color:#fff;
    font-weight:bold;
}
.nav{
    position:fixed;
    bottom:0;
    left:0;
    right:0;
    display:flex;
    justify-content:space-around;
    background:#fff;
    padding:10px;
    border-top:1px solid #ddd;
}
.nav a{
    text-decoration:none;
    color:#444;
}
.orange{
    color:#ea580c;
}