Create referrals table to record recommendation relationships, including referrals, referrals, recommendation codes and usage time; 2. Define belongsToMany and hasMany relationships in the User model to manage recommendation data; 3. Generate a unique recommendation code when registering (can be implemented through model events); 4. Capture the recommendation code by querying parameters during registration, establish a recommendation relationship after verification and prevent self-recommendation; 5. Trigger the reward mechanism when recommended users complete the specified behavior (subscription order); 6. Generate shareable recommendation links, and use Laravel signature URLs to enhance security; 7. Display recommendation statistics on the dashboard, such as the total number of recommendations and converted numbers; it is necessary to ensure database constraints, sessions or cookies are persisted,

Backdrop-filter is used to apply visual effects to the content behind the elements. 1. Use backdrop-filter:blur(10px) and other syntax to achieve the frosted glass effect; 2. Supports multiple filter functions such as blur, brightness, contrast, etc. and can be superimposed; 3. It is often used in glass card design, and it is necessary to ensure that the elements overlap with the background; 4. Modern browsers have good support, and @supports can be used to provide downgrade solutions; 5. Avoid excessive blur values and frequent redrawing to optimize performance. This attribute only takes effect when there is content behind the elements.

User agent stylesheets are the default CSS styles that browsers automatically apply to ensure that HTML elements that have not added custom styles are still basic readable. They affect the initial appearance of the page, but there are differences between browsers, which may lead to inconsistent display. Developers often solve this problem by resetting or standardizing styles. Use the Developer Tools' Compute or Style panel to view the default styles. Common coverage operations include clearing inner and outer margins, modifying link underscores, adjusting title sizes and unifying button styles. Understanding user agent styles can help improve cross-browser consistency and enable precise layout control.

Define@keyframesbouncewith0%,100%attranslateY(0)and50%attranslateY(-20px)tocreateabasicbounce.2.Applytheanimationtoanelementusinganimation:bounce0.6sease-in-outinfiniteforsmooth,continuousmotion.3.Forrealism,use@keyframesrealistic-bouncewithscale(1.1

To achieve CSS element overlap, you need to use positioning and z-index attributes. 1. Use position and z-index: Set elements to non-static positioning (such as absolute, relative, etc.), and control the stacking order through z-index, the larger the value, the higher the value. 2. Common positioning methods: absolute is used for precise layout, relative is used for relatively offset and overlap adjacent elements, fixed or sticky is used for fixed positioning of suspended layers. 3. Actual example: By setting the parent container position:relative, child element position:absolute and different z-index, the card overlap effect can be achieved.

The Repository pattern is a design pattern used to decouple business logic from data access logic. 1. It defines data access methods through interfaces (Contract); 2. The specific operations are implemented by the Repository class; 3. The controller uses the interface through dependency injection, and does not directly contact the data source; 4. Advantages include neat code, strong testability, easy maintenance and team collaboration; 5. Applicable to medium and large projects, small projects can use the model directly.

AccessorsandmutatorsinLaravel'sEloquentORMallowyoutoformatormanipulatemodelattributeswhenretrievingorsettingvalues.1.Useaccessorstocustomizeattributeretrieval,suchascapitalizingfirst_nameviagetFirstNameAttribute($value)returningucfirst($value).2.Usem

Create a Laravel project and configure the database environment; 2. Use Artisan to generate models, migrations and controllers; 3. Define API resource routing in api.php; 4. Implement the addition, deletion, modification and query methods in the controller and use request verification; 5. Install LaravelSanctum to implement API authentication and protect routes; 6. Unify JSON response format and handle errors; 7. Use Postman and other tools to test the API, and finally obtain a complete and extensible RESTfulAPI.