body {
    font-family: "Microsoft JhengHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1, h2, h3 {
    color: #0066cc;
    border-bottom: 2px solid #0066cc;
    padding-bottom: 10px;
}

.forum-list {
    list-style: none;
    padding: 0;
}

.forum-item {
    margin: 10px 0;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 5px;
    border-left: 4px solid #0066cc;
}

.forum-item a {
    text-decoration: none;
    color: #0066cc;
    font-weight: bold;
}

.forum-item a:hover {
    text-decoration: underline;
}

.thread-list {
    list-style: none;
    padding: 0;
}

.thread-item {
    margin: 10px 0;
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 5px;
}

.thread-title {
    font-weight: bold;
    color: #0066cc;
}

.thread-meta {
    color: #666;
    font-size: 0.9em;
    margin-top: 5px;
}

.post {
    margin: 20px 0;
    padding: 15px;
    background-color: #fafafa;
    border-radius: 5px;
    border-left: 3px solid #28a745;
}

.post.first-post {
    border-left-color: #0066cc;
    background-color: #f0f8ff;
}

.post-header {
    background-color: #e9ecef;
    padding: 10px;
    border-radius: 5px 5px 0 0;
    margin: -15px -15px 15px -15px;
}

.post-author {
    font-weight: bold;
    color: #495057;
}

.post-date {
    color: #6c757d;
    font-size: 0.9em;
    float: right;
}

.post-content {
    margin-top: 10px;
    line-height: 1.6;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
}

blockquote {
    border-left: 4px solid #ccc;
    margin: 10px 0;
    padding: 10px 20px;
    background-color: #f9f9f9;
    font-style: italic;
}

.attachment {
    margin: 10px 0;
    padding: 10px;
    background-color: #e9ecef;
    border-radius: 5px;
    border: 1px solid #dee2e6;
}

.attachment.image {
    text-align: center;
}

.attachment a {
    color: #0066cc;
    text-decoration: none;
}

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

.navigation {
    margin: 20px 0;
    padding: 10px;
    background-color: #e9ecef;
    border-radius: 5px;
}

.navigation a {
    color: #0066cc;
    text-decoration: none;
    margin-right: 15px;
}

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

.youtube-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    margin: 10px 0;
}

.youtube-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

pre {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 5px;
    padding: 10px;
    overflow-x: auto;
}

.stats {
    margin-top: 20px;
    padding: 10px;
    background-color: #e7f3ff;
    border-radius: 5px;
    color: #0066cc;
}