/* 留言区域样式优化 */
        .message-section {
            background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
            border-radius: 20px;
            padding: 40px;
            margin: 40px auto;
            max-width: 1000px;
            box-shadow: 0 10px 40px rgba(102, 126, 234, 0.1);
            border: 1px solid rgba(102, 126, 234, 0.1);
        }
        
        .section-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 12px;
            color: #2d3748;
            justify-content: center;
        }
        
        .section-subtitle {
            text-align: center;
            color: #718096;
            font-size: 16px;
            margin-bottom: 30px;
        }

        /* 表单样式优化 */
        .message-form {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            margin-bottom: 40px;
        }
        
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 14px;
            color: #4a5568;
            font-weight: 500;
        }
        
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 15px;
            font-family: inherit;
            transition: all 0.3s ease;
            background: #fafbfc;
        }
        
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: #667eea;
            background: white;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }
        
        .form-group textarea {
            resize: vertical;
            min-height: 120px;
        }
        
        .btn-submit {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 16px 48px;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        
        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
        }
        
        .btn-submit:active {
            transform: translateY(0);
        }

        /* 留言列表样式优化 */
        .message-list {
            margin-top: 40px;
        }
        
        .list-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 2px solid #e2e8f0;
        }
        
        .list-title {
            font-size: 20px;
            font-weight: 600;
            color: #2d3748;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .message-count {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
        }

        .message-item {
            background: white;
            border-radius: 12px;
            padding: 24px;
            margin-bottom: 20px;
            border: 1px solid #e2e8f0;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        
        .message-item:hover {
            box-shadow: 0 8px 30px rgba(0,0,0,0.08);
            transform: translateY(-3px);
            border-color: #cbd5e0;
        }
        
        .message-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        
        .message-item:hover::before {
            opacity: 1;
        }
        
        .message-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 12px;
            align-items: center;
        }
        
        .message-user {
            font-weight: 600;
            color: #2d3748;
            font-size: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .user-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 14px;
        }
        
        .message-time {
            font-size: 13px;
            color: #a0aec0;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .message-content {
            color: #4a5568;
            line-height: 1.8;
            font-size: 15px;
            padding-left: 44px;
        }

        /* 后台回复样式 */
        .admin-reply {
            background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
            border-radius: 10px;
            padding: 20px;
            margin-top: 16px;
            margin-left: 44px;
            border-left: 4px solid #667eea;
            position: relative;
        }
        
        .admin-reply::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 20px;
            width: 2px;
            height: calc(100% + 16px);
            background: #e2e8f0;
        }
        
        .message-item:last-child .admin-reply::before {
            display: none;
        }
        
        .admin-reply-header {
            font-size: 14px;
            color: #667eea;
            margin-bottom: 10px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .admin-badge {
            background: #667eea;
            color: white;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 11px;
        }
        
        .admin-reply-content {
            color: #4a5568;
            line-height: 1.7;
            font-size: 14px;
        }
        
        .admin-reply-time {
            font-size: 12px;
            color: #a0aec0;
            margin-top: 10px;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .no-messages {
            text-align: center;
            color: #a0aec0;
            padding: 60px 20px;
            font-size: 15px;
        }
        
        .no-messages-icon {
            font-size: 48px;
            margin-bottom: 16px;
            opacity: 0.5;
        }
        
        .loading {
            text-align: center;
            color: #667eea;
            padding: 40px;
            font-size: 15px;
        }

        /* 分页样式 */
        .pagination-wrapper {
            margin-top: 40px;
            padding-top: 30px;
            border-top: 1px solid #e2e8f0;
        }
        
        .pagination-info {
            text-align: center;
            color: #718096;
            font-size: 14px;
            margin-bottom: 16px;
        }
        
        .pagination-info span {
            margin: 0 8px;
            color: #667eea;
            font-weight: 600;
        }
        
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        
        .pagination-btn {
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border: 1px solid #e2e8f0;
            background: white;
            color: #4a5568;
            border-radius: 8px;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 500;
        }
        
        .pagination-btn:hover:not(:disabled) {
            border-color: #667eea;
            color: #667eea;
            background: #f7fafc;
        }
        
        .pagination-btn.active {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border-color: transparent;
            box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
        }
        
        .pagination-btn:disabled {
            opacity: 0.4;
            cursor: not-allowed;
        }
        
        .pagination-btn.first,
        .pagination-btn.last {
            padding: 0 16px;
        }
        
        .pagination-btn.prev,
        .pagination-btn.next {
            padding: 0 16px;
            gap: 4px;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .message-section {
                padding: 24px;
                margin: 20px;
            }
            
            .form-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            
            .section-title {
                font-size: 22px;
            }
            
            .message-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            
            .message-content,
            .admin-reply {
                padding-left: 0;
                margin-left: 0;
            }
            
            .admin-reply::before {
                display: none;
            }
            
            .pagination-btn {
                min-width: 36px;
                height: 36px;
                font-size: 13px;
            }
        }