body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
}
header {
    background: url('/images/er-header-bg.jpg') no-repeat center center;
    background-size: cover;
    height: 400px;
    color: white;
    text-align: center;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 20px;
}
header::after {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 1;
}
header h1, header p {
    position: relative;
    z-index: 2;
}
nav {
    background: #e6e6e6;
    padding: 10px;
    text-align: center;
}
nav a {
    margin: 0 10px;
    text-decoration: none;
    color: #004b8d;
    font-weight: bold;
}
.container {
    max-width: 1000px;
    margin: 20px auto;
    padding: 20px;
    background: white;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    border-radius: 8px;
}

.main-content-area {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
}

.left-sidebar {
    flex: 1 1 200px;
    border: 1px solid #ccc; /* Adjusted border */
    padding: 20px;
    background-color: #f0f8ff; /* AliceBlue */
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.left-sidebar h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: #CC0000; /* Red */
    font-size: 1.3em;
}
.left-sidebar p {
    margin-bottom: 10px;
    font-size: 0.95em;
}
.left-sidebar strong {
    color: #003366;
    font-weight: bold;
}
.left-sidebar sup, .right-sidebar sup { /* Combined rule for sup */
    font-size: 0.75em;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
    top: -0.5em;
}

.post-list-column {
    flex: 2 1 380px; /* Adjusted flex-basis */
}

/* Styling for the new <article> and <h2> elements in post-list */
.post-list article {
    margin-bottom: 25px; /* Increased space between posts, was on .post-list p */
}

.post-list article h2 { /* Style for the new H2 post titles */
    font-size: 24px;
    margin-top: 0; /* Remove default top margin for h2 */
    margin-bottom: 5px; /* Space between title and description */
}

.post-list article h2 a { /* Styles for the link within H2 */
    color: #004b8d;
    text-decoration: none;
    font-weight: bold;
}
.post-list article h2 a:hover {
    text-decoration: underline;
}

.post-list article p { /* Styles for the post description */
    margin-top: 0;
    /* margin-bottom: 25px; This is now on the article tag */
    font-size: 16px;
    color: #555;
}

.right-sidebar {
    flex: 1 1 200px;
    padding: 20px;
    background-color: #fafafa;
    border-radius: 8px;
    border: 1px solid #ccc;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.right-sidebar h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: #CC0000; /* Red */
    font-size: 1.3em;
}
.right-sidebar p {
    margin-bottom: 10px;
    font-size: 0.95em;
}
.right-sidebar strong {
    color: #003366;
    font-weight: bold;
}

footer {
    text-align: center;
    font-size: 14px;
    color: #777;
    padding: 20px;
    margin-top: 40px;
    border-top: 1px solid #eee;
}
.footer-links a {
    margin: 0 10px;
    text-decoration: none;
    color: #004b8d;
    font-weight: bold;
}
.footer-links a:hover {
    text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .main-content-area {
        flex-direction: column;
        gap: 20px;
    }
    nav a {
        display: block;
        margin: 5px 0;
    }
    .left-sidebar, .post-list-column, .right-sidebar {
        flex-basis: 100%;
    }
    .left-sidebar {
        border-bottom: 1px solid #ddd;
    }
    .right-sidebar {
        border-top: 1px solid #ddd;
    }
    .container {
        max-width: 95%;
        padding: 15px;
    }
    header {
        height: 300px;
    }
    header h1 {
        font-size: 1.8em;
    }
}
.readable-content {
    max-width: 800px; /* Adjust as you like, 700-800px is common for readability */
    margin: 20px auto; /* Centers the content and adds some space top/bottom */
    padding: 0 20px;  /* Adds some padding on the sides */
    line-height: 1.6; /* Improves read*