* { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #f5f7fa; color: #333; line-height: 1.6; }
        .container { max-width: 800px; margin: 20px auto; padding: 0 20px; }
        .card { background: white; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); padding: 30px; margin-bottom: 20px; }
        .card h1 { margin-bottom: 10px; color: #2c3e50; }
        .meta { color: #7f8c8d; font-size: 0.9em; margin-bottom: 20px; border-bottom: 1px solid #eee; padding-bottom: 15px; }
        .content { font-size: 1.05em; line-height: 1.8; word-wrap: break-word; }
        .content img { max-width: 100%; height: auto; border-radius: 5px; margin: 10px 0; }
        .content p { margin-bottom: 10px; }
        .back { display: inline-block; margin-bottom: 15px; color: #3498db; text-decoration: none; }
        .back:hover { text-decoration: underline; }

        .comment-section h2 { color: #2c3e50; margin-bottom: 15px; font-size: 1.2em; }
        .comment { padding: 15px 0; border-bottom: 1px solid #eee; }
        .comment:last-child { border-bottom: none; }
        .comment-meta { font-size: 0.85em; color: #7f8c8d; margin-bottom: 5px; }
        .comment-content { color: #333; word-wrap: break-word; }
        .empty-comment { color: #999; padding: 10px 0; }

        .comment-form { margin-top: 20px; border-top: 1px solid #eee; padding-top: 20px; }
        .form-group { margin-bottom: 15px; }
        .form-group label { display: block; margin-bottom: 5px; font-weight: bold; color: #2c3e50; font-size: 0.9em; }
        .form-group input, .form-group textarea { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 5px; font-size: 1em; font-family: inherit; }
        .form-group textarea { min-height: 100px; resize: vertical; }
        .btn { padding: 10px 20px; background: #e67e22; color: white; border: none; border-radius: 5px; cursor: pointer; font-size: 1em; }
        .btn:hover { background: #d35400; }
        .btn:disabled { background: #bdc3c7; cursor: not-allowed; }

        .msg-error { color: #e74c3c; margin-bottom: 10px; padding: 8px 12px; background: #fdecea; border-radius: 5px; display: none; }
        .msg-success { color: #065f46; margin-bottom: 10px; padding: 8px 12px; background: #d1fae5; border-radius: 5px; display: none; }
        .loading { color: #95a5a6; padding: 10px 0; }