body 
    .card {max-width:900px;margin:0 auto;padding:18px;border:1px solid #eee;border-radius:8px;box-shadow:0 6px 18px rgba(0,0,0,0.04);}
    .row {display:flex;gap:12px;align-items:center;}
    .file-area {border:2px dashed #ddd;padding:24px;text-align:center;border-radius:8px;cursor:pointer;}
    .controls {margin-top:16px;display:flex;gap:12px;flex-wrap:wrap;}
    label{display:block;font-size:0.9rem;margin-bottom:6px}
    input[type=range]{width:320px}
    table{width:100%;border-collapse:collapse;margin-top:12px}
    td,th{padding:6px;border-bottom:1px solid #f0f0f0;text-align:left}
    .btn {padding:8px 12px;border-radius:6px;border:0;cursor:pointer}
    .btn-primary{background:#1565d8;color:#fff}
    .btn-ghost{background:#f3f6fb;border:1px solid #e6eefc}
    .small {font-size:0.9rem;color:#666}