/* Base page */
body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f7fb;
    color: #222;
    line-height: 1.6;
}

/* Header */
header {
    background: #1e3c72;
    color: white;
    padding: 2em 1em;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2.5em;
    letter-spacing: 1px;
}

/* Main content */
section, article, figure, footer {
    max-width: 900px;
    margin: 1.5em auto;
    background: #fff;
    padding: 1.5em;
    border-radius: 10px;
    box-shadow: 0 4px 12px #c0aeae;
}

/* Section heading */
section h3 {
    margin-top: 0;
    color: #1e3c72;
}

/* Video */
video {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-top: 0.5em;
}

/* Article text */
article {
    font-size: 1.1em;
}

/* Audio */
figure {
    text-align: center;
}

figcaption {
    font-weight: bold;
    margin-bottom: 0.5em;
    color: #2a5298;
}

/* Audio player */
audio {
    width: 100%;
    margin-top: 0.5em;
}

/* Footer */
footer {
    text-align: center;
    font-size: 0.9em;
    color: #555;
}