body {
    background: linear-gradient(to right, #f9fbfd, #e6f0fa);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}
.captcha-container {
    background: #fff;
    padding: 40px;
    border-radius: 0px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    text-align: center;
    width: 100%;
    max-width: 400px;
}
.captcha-container img {
    width: 140px;
    margin-bottom: 20px;
}
.captcha-container h4 {
    color: #0a59a3;
    margin-bottom: 10px;
}
.captcha-container p {
    color: #555;
    font-size: 0.95rem;
    margin-bottom: 20px;
}
#verify-btn {
    margin-top: 20px;
    background-color: #004e9a;
    color: white;
    border: none;
    padding: 12px 25px;
    font-size: 1rem;
    border-radius: 6px;
    cursor: pointer;
}
#verify-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}
.checkbox-label {
    font-size: 0.95rem;
    color: #333;
}