body {
        margin: 0;
        font-family: Arial, sans-serif;
        background-color: #f4f8fc;
        color: #333;
    }
    header {
        background-color: #003366;
        color: white;
        padding: 15px 20px;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    header h1 {
        margin: 0;
        font-size: 22px;
    }
    nav a {
        color: white;
        text-decoration: none;
        margin: 0 10px;
        font-weight: bold;
    }
    nav a:hover {
        text-decoration: underline;
    }
    .hero {
        background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), 
                    url('../photos/bg.jpg') no-repeat center/cover;
        color: white;
        text-align: center;
        padding: 80px 20px;
    }
    .hero h2 {
        font-size: 36px;
        margin-bottom: 15px;
    }
    .hero p {
        font-size: 18px;
        max-width: 600px;
        margin: auto;
    }
    section {
        padding: 40px 20px;
        max-width: 1100px;
        margin: auto;
    }
    .card-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }
    .card {
        background: white;
        padding: 20px;
        border-radius: 8px;
        box-shadow: 0px 3px 6px rgba(0,0,0,0.1);
        text-align: center;
    }
    .card h3 {
        margin-top: 0;
    }
    footer {
        background: #003366;
        color: white;
        text-align: center;
        padding: 15px;
        margin-top: 40px;
    }
    @media (max-width: 600px) {
        header {
            flex-direction: column;
        }
        nav {
            margin-top: 10px;
        }
    }

  .modal {
        display: none;
        position: fixed;
        z-index: 9999;
        left: 0; top: 0;
        width: 100%; height: 100%;
        background-color: rgba(0,0,0,0.5);
        justify-content: center;
        align-items: center;
    }
    .modal-content {
        background: white;
        padding: 20px;
        max-width: 600px;
        border-radius: 8px;
        box-shadow: 0px 3px 6px rgba(0,0,0,0.3);
        text-align: left;
    }
    .modal-content h2 {
        margin-top: 0;
    }
    .modal-buttons {
        margin-top: 15px;
        text-align: right;
    }
    .modal-buttons button {
        padding: 8px 15px;
        margin-left: 10px;
        border: none;
        border-radius: 4px;
        cursor: pointer;
    }
    .agree-btn {
        background-color: #003366;
        color: white;
    }
    .close-btn {
        background-color: #ccc;
    }