修改底层请求逻辑，封装请求方法

public/css/public.css

@@ -591,41 +591,6 @@ textarea {
   transform: translateY(-1px);
 }
 
-.auth-captcha-box {
-  /* 认证页滑动验证挂载点，TAC 内部 DOM 由第三方库生成 */
-  display: flex;
-  justify-content: center;
-}
-
-.auth-captcha-box:empty {
-  display: none;
-}
-
-.auth-captcha-box #tianai-captcha-parent {
-  max-width: 100%;
-}
-
-.auth-captcha-modal {
-  /* 认证页滑动验证弹窗挂载点，TAC 内部 DOM 由第三方库生成 */
-  position: fixed;
-  inset: 0;
-  z-index: 1000;
-  display: grid;
-  place-items: center;
-  padding: 24px;
-  background: rgba(38, 48, 44, .32);
-  backdrop-filter: blur(4px);
-}
-
-.auth-captcha-modal:empty {
-  display: none;
-}
-
-.auth-captcha-modal #tianai-captcha-parent {
-  max-width: min(318px, calc(100vw - 32px));
-  max-height: calc(100vh - 32px);
-}
-
 /* 验证码输入和按钮的通用双列布局，窄屏在页面 CSS 中改为单列 */
 .code-row {
   display: grid;