h1,h2,h3,h4,p,body,html{padding:0;margin:0;}
    .tc { text-align:center;}
    .fc {
  display: flex;
  justify-content: center; /* 水平居中子元素 */
}
        body {
            font-family: 'Arial', sans-serif;
            max-width: 1000px;
            margin: 0 auto;
            line-height: 1.6;
            color: #333;
            background: #ffffff;
            padding-top: 50px; /* 为语言切换器留出空间 */
        }
        
        .ban {
            text-align: center;
            margin-bottom: 40px;
            padding: 30px 20px;
            background: #ffffff;
            border-radius: 12px;
            margin: 20px auto 40px;
            max-width: 800px;
        }
        .ban p { margin-bottom:15px;}
        .ban h1 { 
            color: #2c3e50;
            font-size: 2.2em;
            margin-bottom: 10px;
        }
        .ban h2 {
            color: #7f8c8d;
            font-size: 1.1em;
            font-weight: 400;
        }
        h1 {
            color: #2c3e50;
            text-align: center;
        }
        .container {
            background-color: #fff;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            margin-bottom: 30px;
            border: 1px solid #eee;
        }
        
        .conl, .conr {
            flex: 1;
        }
        
        .conl {
            padding-right: 30px;
            border-right: 1px solid #e0e0e0;
        }
        
        .conr {
            padding-left: 30px;
        }
        
        h3 {
            color: #2c3e50;
            margin-bottom: 20px;
            font-size: 1.3em;
            font-weight: 600;
        }
        .upload-area {
            border: 2px dashed #e0e0e0;
            border-radius: 8px;
            padding: 30px;
            text-align: center;
            margin-bottom: 20px;
            cursor: pointer;
            transition: all 0.3s;
            background-color: #fafafa;
        }
        .upload-area:hover {
            border-color: #3498db;
            background-color: #f0f8ff;
        }
        #fileInput {
            display: none;
        }
        .preview {
            margin-top: 20px;
            text-align: center;
        }
        #previewImage {
            max-width: 200px;
            max-height: 200px;
            border: 1px solid #eee;
            border-radius: 8px;
        }
        textarea {
            width: 100%;
            height: 150px;
            margin-top: 20px;
            padding: 12px;
            border: 1px solid #e0e0e0;
            border-radius: 8px;
            resize: vertical;
            font-family: monospace;
            font-size: 14px;
            background-color: #fafafa;
        }
        button {
            background-color: #3498db;
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 16px;
            margin-top: 10px;
            transition: all 0.3s;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        button:hover {
            background-color: #2980b9;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        
        .upload-btn {
            background-color: #27ae60;
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 16px;
            margin-top: 15px;
            transition: all 0.3s;
            box-shadow: 0 2px 4px rgba(39, 174, 96, 0.2);
        }
        .upload-btn:hover {
            background-color: #229954;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
        }
        .instructions {
            margin-top: 30px;
            padding: 20px;
            background-color: #f8f9fa;
            border-radius: 8px;
            font-size: 14px;
            border: 1px solid #eee;
        }
        
        .styled-list {
            list-style: none;
            padding-left: 0;
        }
        
        .styled-list li {
            position: relative;
            padding-left: 45px;
            margin-bottom: 12px;
            line-height: 1.6;
        }
        
        .list-number {
            position: absolute;
            left: 0;
            top: 0;
            background-color: #3498db;
            color: white;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
            box-shadow: 0 2px 4px rgba(52, 152, 219, 0.2);
        }
        
        #conbox {
            display: flex;
            gap: 30px;
            align-items: flex-start;
        }
        
        @media (max-width: 768px) {
            #conbox {
                flex-direction: column;
            }
            
            .conl {
                border-right: none;
                border-bottom: 1px solid #e0e0e0;
                padding-right: 0;
                padding-bottom: 30px;
                margin-bottom: 30px;
            }
            
            .conr {
                padding-left: 0;
            }
        }
        
        /* 多语言切换器样式 */
        .language-switcher {
            position: fixed;
            top: 10px;
            right: 10px;
            z-index: 1000;
        }
        
        #current-language {
            display: flex;
            align-items: center;
            padding: 8px 12px;
            background: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
        }
        
        #current-flag {
            margin-right: 8px;
            font-size: 16px;
        }
        
        .arrow {
            margin-left: 8px;
            font-size: 12px;
            color: #6c757d;
        }
        
        .dropdown-content {
            display: none;
            position: absolute;
            right: 0;
            background-color: #fff;
            min-width: 200px;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            border: 1px solid #dee2e6;
            border-radius: 4px;
            z-index: 1001;
            max-height: 300px;
            overflow-y: auto;
        }
        
        .dropdown-content a {
            display: flex;
            align-items: center;
            padding: 10px 15px;
            text-decoration: none;
            color: #212529;
            border-bottom: 1px solid #eee;
        }
        
        .dropdown-content a:last-child {
            border-bottom: none;
        }
        
        .dropdown-content a:hover {
            background-color: #f8f9fa;
        }
        
        .lang-flag {
            margin-right: 10px;
            font-size: 16px;
        }
        
        .dropdown-show {
            display: block;
        }
        
        .current-lang {
            background-color: #e9f7fe !important;
            font-weight: bold;
        }