*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:"Segoe UI",Roboto,system-ui,sans-serif;
}
body{
    background-color:#f4f7fa;
    color:#2d3748;
    padding:30px 15px;
}
.container{
    max-width:1200px;
    margin:0 auto;
}
.page-header{
    background:#ffffff;
    border-radius:12px;
    padding:24px 30px;
    box-shadow:0 2px 12px rgba(0,0,0,0.06);
    margin-bottom:20px;
}
.page-header h2{
    font-size:22px;
    font-weight:600;
    color:#1a202c;
    display:flex;
    align-items:center;
    gap:10px;
}
.page-header p{
    margin-top:8px;
    color:#718096;
    font-size:14px;
}
.card{
    background:#ffffff;
    border-radius:12px;
    padding:24px 30px;
    box-shadow:0 2px 12px rgba(0,0,0,0.06);
    margin-bottom:20px;
}
.card-title{
    font-size:16px;
    font-weight:600;
    margin-bottom:20px;
    color:#2d3748;
    display:flex;
    align-items:center;
    gap:8px;
}
.form-row{
    display:flex;
    flex-wrap:wrap;
    gap:16px;
    margin-bottom:16px;
    align-items:center;
}
.form-item{
    flex:1;
    min-width:240px;
}
.form-item label{
    display:block;
    font-size:14px;
    color:#4a5568;
    margin-bottom:6px;
    font-weight:500;
}
.form-item input,
.form-item select{
    width:100%;
    height:42px;
    padding:0 14px;
    border:1px solid #cbd5e0;
    border-radius:8px;
    font-size:14px;
    transition:border 0.2s,box-shadow 0.2s;
    background:#fff;
}
.form-item input:focus,
.form-item select:focus{
    outline:none;
    border-color:#3182ce;
    box-shadow:0 0 0 3px rgba(49,130,206,0.15);
}
.check-item{
    display:flex;
    align-items:center;
    gap:8px;
    height:42px;
}
.check-item input{
    width:16px;
    height:16px;
}
.btn-group{
    margin-top:10px;
}
.btn{
    display:inline-flex;
    align-items:center;
    gap:6px;
    height:42px;
    padding:0 20px;
    border-radius:8px;
    border:none;
    font-size:14px;
    font-weight:500;
    cursor:pointer;
    transition:all 0.2s;
}
.btn-primary{
    background:#3182ce;
    color:#fff;
}
.btn-primary:hover{
    background:#2b6cb0;
}
.alert{
    padding:12px 16px;
    border-radius:8px;
    margin-bottom:16px;
    font-size:14px;
    display:flex;
    align-items:center;
    gap:8px;
}
.alert-danger{
    background:#fed7d7;
    color:#c53030;
}
.alert-success{
    background:#c6f6d5;
    color:#22543d;
}
.result-wrap h3{
    font-size:16px;
    font-weight:600;
    margin-bottom:12px;
    color:#2d3748;
    display:flex;
    align-items:center;
    gap:8px;
}
textarea{
    width:100%;
    min-height:480px;
    padding:14px;
    border:1px solid #cbd5e0;
    border-radius:8px;
    font-family:Consolas,Monaco,monospace;
    font-size:13px;
    line-height:1.6;
    resize:vertical;
    background:#f7fafc;
}
@media(max-width:768px){
    .form-row{
        flex-direction:column;
        align-items:stretch;
    }
    .form-item{
        min-width:auto;
    }
}