body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f7f7f7;
    color: #222;
}

.container {
    max-width: 800px;
    margin: 40px auto;
    padding: 24px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

h1, h2 {
    margin-top: 0;
}

.device-form {
    margin-bottom: 24px;
    padding: 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
}

fieldset {
    border: none;
    padding: 0;
    margin: 0 0 16px 0;
}

label {
    display: block;
    margin: 8px 0;
}

button {
    padding: 10px 16px;
    border: none;
    background: #1f6feb;
    color: white;
    border-radius: 8px;
    cursor: pointer;
}

button:hover {
    background: #1558b0;
}

.checklist {
    margin-top: 24px;
}

ul {
    list-style: none;
    padding-left: 0;
    margin-left: 40px;
}

li {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}