body{font-family:system-ui,Arial,sans-serif;max-width:900px;margin:0 auto;padding:16px;}
header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.card{border:1px solid #ddd;border-radius:12px;padding:12px;margin:8px 0}
.row{margin-top:8px}
button{padding:8px 12px;border-radius:8px;border:1px solid #ccc;background:#f6f6f6;cursor:pointer}
input{margin:6px 0;padding:6px 8px}
audio{width:100%;margin-top:8px}