/* Basic Reset and Box Sizing */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; /* A common, clean font */
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
    padding-top: 60px; /* Adjust based on header height */
}

/* Header Styles */
header {
    background-color: #0a2351; /* Dark blue from the PDF cover */
    padding: 10px 20px;
    text-align: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

header img {
    max-width: 100%; /* Ensure image is responsive */
    height: 40px; /* Fixed height for the header logo */
    object-fit: contain; /* Maintain aspect ratio */
}

/* Main Content Styles */
main {
    padding: 20px;
}

.container {
    max-width: 960px; /* Max width for desktop */
    margin: 0 auto; /* Center the container */
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1 {
    color: #0a2351; /* Dark blue */
    margin-bottom: 20px;
    font-size: 1.8em; /* Responsive font size */
    line-height: 1.3;
}

h2 {
    color: #c44b26; /* Accent color */
    margin-top: 25px;
    margin-bottom: 15px;
    font-size: 1.4em; /* Responsive font size */
    border-bottom: 2px solid #eee;
    padding-bottom: 5px;
}

p {
    margin-bottom: 15px;
    font-size: 1em; /* Base font size */
}

strong {
    color: #0a2351; /* Highlight keywords */
}

/* Footer Styles */
footer {
    background-color: #0a2351; /* Dark blue */
    color: #fff;
    text-align: center;
    padding: 15px;
    margin-top: 40px;
    font-size: 0.9em;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    body {
        padding-top: 50px; /* Adjust padding for smaller header on mobile */
    }

    header img {
        height: 35px;
    }

    .container {
        padding: 20px;
        margin: 0 10px; /* Add some side margin on smaller screens */
    }

    h1 {
        font-size: 1.5em;
    }

    h2 {
        font-size: 1.2em;
    }

    p {
        font-size: 0.95em;
    }
}

@media (max-width: 480px) {
    body {
        padding-top: 45px;
    }

    header img {
        height: 30px;
    }

    .container {
         padding: 15px;
         margin: 0 5px;
    }

    h1 {
        font-size: 1.3em;
    }

    h2 {
        font-size: 1.1em;
    }

    p {
        font-size: 0.9em;
    }
}