/* 基础样式 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
            padding: 20px;
        }
        
        /* 表单容器 */
        .form-container {
            max-width: 600px;
            margin: 30px auto;
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        /* 表单标题 */
        .form-title {
            text-align: center;
            color: #ff6b00;
            margin-bottom: 25px;
            font-size: 24px;
            font-weight: 600;
        }
        
        /* 表单字段样式 */
        fieldset {
            border: none;
            margin-bottom: 20px;
            padding: 0;
        }
        
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: #555;
        }
        
        input[type="text"],
        textarea,
        select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 16px;
            transition: all 0.3s;
            font-family: inherit;
        }
        
        input[type="text"]:focus,
        textarea:focus,
        select:focus {
            border-color: #ff6b00;
            outline: none;
            box-shadow: 0 0 0 2px rgba(255, 107, 0, 0.2);
        }
        
        textarea {
            height: 120px;
            resize: vertical;
        }
        
        /* 提交按钮容器 */
        .submit-container {
            text-align: center;
            margin-top: 30px;
        }
        
        /* 提交按钮 */
        input[type="submit"] {
            background-color: #ff6b00;
            color: white;
            border: none;
            border-radius: 4px;
            padding: 12px 60px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 2px 5px rgba(255, 107, 0, 0.3);
        }
        
        input[type="submit"]:hover {
            background-color: #e65c00;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(255, 107, 0, 0.3);
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .form-container {
                width: 95%;
                padding: 20px;
                margin: 15px auto;
            }
            
            input[type="submit"] {
                padding: 12px 40px;
                width: 100%;
            }
        }