<style>
body{
    font-family: 'Inter', system-ui, sans-serif;
    background:#0d0d0f;
    color:#e5e5e5;
    margin:0;
}
.container{
    max-width:900px;
    margin:40px auto;
    background:#151518;
    padding:40px 32px;
    border-radius:14px;
    border:1px solid #222;
}
h1,h2{
    color:#fff;
}
label{
    display:block;
    margin-top:18px;
    font-weight:600;
}
input, select{
    width:100%;
    padding:12px;
    margin-top:6px;
    border-radius:8px;
    border:1px solid #444;
    background:#0d0d0f;
    color:#fff;
    font-size:1rem;
}
.range{
    width:100%;
}
.btn{
    margin-top:28px;
    padding:14px 22px;
    background:#2e8b57;
    color:#fff;
    border:none;
    border-radius:8px;
    font-size:1.1rem;
    cursor:pointer;
    font-weight:700;
}
.btn:hover{
    opacity:0.9;
}
.result{
    display:none;
    margin-top:40px;
    padding:26px;
    border-radius:14px;
    background:#0f1f18;
    border-left:6px solid #2e8b57;
}
.result strong{
    color:#fff;
}
.cta-box{
    margin-top:30px;
    padding:26px;
    background:#ffffff;
    color:#000;
    border-radius:14px;
}
.cta-box h3{
    margin-top:0;
    color:#000;
}
.cta{
    display:inline-block;
    margin-top:14px;
    background:#ff9900;
    color:#000;
    padding:14px 22px;
    border-radius:8px;
    font-weight:700;
    text-decoration:none;
}
.small{
    font-size:0.9rem;
    color:#aaa;
    margin-top:30px;
}
</style>