<!DOCTYPE html><html lang="id"><head><meta charset="UTF-8"><title>Sudah Diisi</title><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.3.2/css/bootstrap.min.css"><style>body{background:linear-gradient(135deg,#1e2a3b,#1a56db);min-height:100vh;display:flex;align-items:center;justify-content:center}</style></head>
<body><div class="bg-white rounded-4 p-5 text-center shadow-lg" style="max-width:400px;width:100%"><div style="font-size:60px">✅</div><h5 class="fw-bold mt-3">Sudah Diisi</h5><p class="text-muted">Anda sudah mengisi survei ini sebelumnya. Terima kasih!</p></div></body></html>
