.content {
    width: 80%;
    margin: 50px auto;
    padding: 20px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
.timestamp {
    font-size: 0.9em;
    color: #666;
    text-align: center;
    margin: 10px 0 30px;
}
[data-theme="dark"] .content {
    background: rgba(26, 26, 26, 0.88);
    box-shadow: 0 0 12px rgba(0, 0, 0, 0.35);
}
[data-theme="dark"] .timestamp {
    color: rgba(225, 225, 225, 0.72);
}
.content h1 {
    text-align: center;
    color: var(--text-color);
    margin-bottom: 10px;
}
.content p {
    text-indent: 2em;
    line-height: 1.8;
    margin-bottom: 1em;
    color: var(--text-color);
}
.content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 30px auto 0;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
}
sup a {
    color: #0066cc;
    text-decoration: none;
    cursor: pointer;
}
sup a:hover {
    color: #004499;
    text-decoration: underline;
}
sup a:visited {
    color: #0066cc;
}
.note-item {
    scroll-margin-top: 20px;
}
.note-section ul {
    list-style: none;
    padding-left: 0;
}
.poem {
    text-align: center;
    margin: 0 auto;
}
.poem p {
    text-indent: 0;
}
@media (max-width: 768px) {
    .content {
        width: 95%;
        margin: 20px auto;
        padding: 15px;
    }
    .content img {
        margin: 20px auto 0;
    }
}