✨ add qq oauth2 support / start landing page

src/layout/Landing/index.vue

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+<template>
+  <AFlex :vertical="true" align="center" justify-content="center">
+    <Header/>
+    <Content/>
+    <Footer/>
+    <div class="area">
+      <ul class="circles">
+        <li></li>
+        <li></li>
+        <li></li>
+        <li></li>
+        <li></li>
+        <li></li>
+        <li></li>
+        <li></li>
+        <li></li>
+        <li></li>
+      </ul>
+    </div>
+  </AFlex>
+</template>
+<script setup lang="ts">
+import Header from "@/layout/Landing/Header/Header.vue";
+import Footer from "@/layout/Landing/Footer/Footer.vue";
+import Content from "@/layout/Landing/Content/Content.vue";
+</script>
+<style scoped lang="scss">
+.area {
+  background: #b9f187;
+  background: -webkit-linear-gradient(to left, #b9f187, #90d952,#70c13a,#52a82e);
+  width: 100%;
+  height: 100vh;
+  z-index: -1;
+  overflow: hidden;
+  position: fixed;
+  top: 0;
+  left: 0;
+
+}
+
+.circles {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+}
+
+.circles li {
+  position: absolute;
+  display: block;
+  list-style: none;
+  width: 20px;
+  height: 20px;
+  background: rgba(255, 255, 255, 0.5);
+  animation: animate 25s linear infinite;
+  bottom: -150px;
+
+}
+
+.circles li:nth-child(1) {
+  left: 25%;
+  width: 80px;
+  height: 80px;
+  animation-delay: 0s;
+}
+
+
+.circles li:nth-child(2) {
+  left: 10%;
+  width: 20px;
+  height: 20px;
+  animation-delay: 2s;
+  animation-duration: 12s;
+}
+
+.circles li:nth-child(3) {
+  left: 70%;
+  width: 20px;
+  height: 20px;
+  animation-delay: 4s;
+}
+
+.circles li:nth-child(4) {
+  left: 40%;
+  width: 60px;
+  height: 60px;
+  animation-delay: 0s;
+  animation-duration: 18s;
+}
+
+.circles li:nth-child(5) {
+  left: 65%;
+  width: 20px;
+  height: 20px;
+  animation-delay: 0s;
+}
+
+.circles li:nth-child(6) {
+  left: 75%;
+  width: 110px;
+  height: 110px;
+  animation-delay: 3s;
+}
+
+.circles li:nth-child(7) {
+  left: 35%;
+  width: 150px;
+  height: 150px;
+  animation-delay: 7s;
+}
+
+.circles li:nth-child(8) {
+  left: 50%;
+  width: 25px;
+  height: 25px;
+  animation-delay: 15s;
+  animation-duration: 45s;
+}
+
+.circles li:nth-child(9) {
+  left: 20%;
+  width: 15px;
+  height: 15px;
+  animation-delay: 2s;
+  animation-duration: 35s;
+}
+
+.circles li:nth-child(10) {
+  left: 85%;
+  width: 150px;
+  height: 150px;
+  animation-delay: 0s;
+  animation-duration: 11s;
+}
+
+
+@keyframes animate {
+
+  0% {
+    transform: translateY(0) rotate(0deg);
+    opacity: 1;
+    border-radius: 0;
+  }
+
+  100% {
+    transform: translateY(-1000px) rotate(720deg);
+    opacity: 0;
+    border-radius: 50%;
+  }
+
+}
+</style>