body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            margin: 0;
            padding: 0;
            background-color: #f4f4f4;
            color: #333;
        }
        header {
            background-color: #0A2A4A;
            color: white;
            padding: 30px 0;
            text-align: center;
        }
        header h1 {
            font-size: 2.5em;
            margin: 0;
        }
        header p {
            font-size: 1.2em;
        }
        section {
            padding: 40px 20px;
            margin: 20px;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }
        h2 {
            color: #0A2A4A;
            font-size: 2em;
            text-align: center;
        }
        .quiz-container {
            max-width: 600px;
            margin: 0 auto;
        }
        .quiz-container h3 {
            color: #0A2A4A;
            font-size: 1.5em;
            margin: 20px 0 10px;
        }
        .quiz-container p {
            margin: 10px 0;
        }
        .quiz-container .radio-group {
            display: flex;
            justify-content: space-between;
            margin-bottom: 15px;
        }
        .quiz-container .radio-group label {
            display: block;
            width: 45%;
            background-color: #ddd;
            border-radius: 30px;
            padding: 12px;
            text-align: center;
            cursor: pointer;
            transition: background-color 0.3s, color 0.3s;
        }
        .quiz-container .radio-group label:hover {
            background-color: #0A2A4A;
            color: white;
        }
        .quiz-container input[type="radio"] {
            display: none;
        }
        .quiz-container input[type="radio"] + label {
            cursor: pointer;
        }
        .quiz-container input[type="radio"]:checked + label {
            background-color: #0A2A4A;
            color: white;
        }
        .quiz-container button {
            background-color: #004080;
            color: white;
            padding: 15px 30px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1.2em;
            display: block;
            margin: 20px auto;
            transition: background-color 0.3s;
        }
        .quiz-container button:hover {
            background-color: #003366;
        }
        .result {
            text-align: center;
            display: none;
        }
        .result h2 {
            color: #0A2A4A;
            font-size: 2em;
            margin: 20px 0;
        }
        .result p {
            font-size: 1.2em;
            margin: 20px 0;
        }
        .popup {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: white;
            box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
            border-radius: 8px;
            z-index: 1000;
            padding: 20px;
            width: 90%;
            max-width: 500px;
            text-align: center;
        }
        .popup h3 {
            color: #0A2A4A;
        }
        .popup input {
            width: calc(100% - 20px);
            padding: 10px;
            margin: 10px 0;
            border: 1px solid #ccc;
            border-radius: 4px;
            box-sizing: border-box;
        }
        .popup button {
            background-color: #004080;
            color: white;
            padding: 10px 20px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1em;
        }
        .popup button:hover {
            background-color: #003366;
        }
        .popup-close {
            background-color: transparent;
            border: none;
            font-size: 1.5em;
            position: absolute;
            top: 10px;
            right: 10px;
            cursor: pointer;
        }
        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
        }
        footer {
            background-color: #0A2A4A;
            color: white;
            text-align: center;
            padding: 20px;
            position: relative;
            margin-top: 20px;
        }
        footer .footer-links {
            margin-bottom: 20px;
        }
        footer .footer-links p {
            margin: 0;
        }
        footer .footer-links a {
            color: white;
            text-decoration: none;
            display: block;
            margin-bottom: 5px;
            transition: color 0.3s;
        }
        footer .footer-links a:hover {
            color: #FFD700;
        }
        footer .footer-links span {
            color: #999;
            display: block;
            margin-bottom: 10px;
        }
        footer .footer-contact {
            margin-top: 20px;
        }
        @media (max-width: 768px) {
            body {
                font-size: 14px;
            }
            header h1 {
                font-size: 20px;
            }
        }