body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
}

header {
    background-color: #09cdfe;
    color: white;
    padding: 2rem 1rem;
    text-align: center;
}

.subtitle {
    font-size: 1.2rem;
    margin-top: 0.5rem;
}

main {
    padding: 2rem 10%;
}

h2 {
    border-bottom: 2px solid #ddd;
    padding-bottom: 0.4rem;
    margin-bottom: 1rem;
}

ul {
    list-style-type: none;
    padding-left: 0;
}

ul li::before {
    content: "— ";
    color: #2e659d;
    font-weight: bold;
}

.resources a {
    color: #2e659d;
    text-decoration: none;
    font-weight: bold;
}

.resources a:hover {
    text-decoration: underline;
}

footer {
    background-color: #09cdfe;
    color: #ffffff;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}

.chart-container {
    margin: 2rem 0;
}

iframe.chart-iframe {
    width: 100%;
    height: 750px;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}