body{
    font-family: Arial, sans-serif;
    background: #f5f7fb;
    margin:0;
    padding:0;
}

.container{
    width:90%;
    max-width:500px;
    margin:40px auto;
    background:#fff;
    padding:30px;
    border-radius:16px;
    box-shadow:0 5px 20px rgba(0,0,0,0.1);
}

h1{
    text-align:center;
    margin-bottom:10px;
    color:#333;
}

.desc{
    text-align:center;
    color:#666;
    margin-bottom:25px;
    line-height:1.6;
}

.form-group{
    margin-bottom:20px;
}

label{
    display:block;
    margin-bottom:8px;
    font-weight:bold;
}

select{
    width:100%;
    padding:12px;
    border-radius:10px;
    border:1px solid #ccc;
    font-size:16px;
}

button{
    width:100%;
    padding:14px;
    border:none;
    border-radius:10px;
    background:#0099ff;
    color:white;
    font-size:16px;
    cursor:pointer;
    transition:0.3s;
}

button:hover{
    background:#0077cc;
}

.result{
    margin-top:25px;
    padding:20px;
    border-radius:12px;
    text-align:center;
    font-size:22px;
    font-weight:bold;
}

.male{
    background:#dff1ff;
    color:#0077cc;
}

.female{
    background:#ffe0f0;
    color:#d63384;
}

.note{
    margin-top:20px;
    font-size:13px;
    color:#777;
    text-align:center;
    line-height:1.5;
}