body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.6;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
            background: #f5f5f5;
        }

        header {
            text-align: center;
            padding: 40px 0;
            background: white;
            border-radius: 8px;
            margin-bottom: 30px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }

        .back-link {
            display: inline-block;
            margin-bottom: 20px;
            color: #1a73e8;
            text-decoration: none;
        }

        .back-link:hover {
            text-decoration: underline;
        }

        .post {
            background: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }

        .post-date {
            color: #666;
            font-size: 0.9em;
        }

        .post-title {
            margin: 10px 0 20px;
            color: #333;
        }

        .post-content {
            margin-bottom: 30px;
        }

        .files-section {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #eee;
        }

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

        .file-item {
            padding: 10px;
            background: #f8f9fa;
            margin-bottom: 10px;
            border-radius: 4px;
        }

        .file-link {
            color: #1a73e8;
            text-decoration: none;
        }

        .file-link:hover {
            text-decoration: underline;
        }