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node_modules/vant/es/password-input/index.less

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+@import '../style/var';
+
+.van-password-input {
+  position: relative;
+  margin: @password-input-margin;
+  user-select: none;
+
+  &__info,
+  &__error-info {
+    margin-top: @padding-md;
+    font-size: @password-input-info-font-size;
+    text-align: center;
+  }
+
+  &__info {
+    color: @password-input-info-color;
+  }
+
+  &__error-info {
+    color: @password-input-error-info-color;
+  }
+
+  &__security {
+    display: flex;
+    width: 100%;
+    height: @password-input-height;
+    cursor: pointer;
+
+    &::after {
+      border-radius: @password-input-border-radius;
+    }
+
+    li {
+      position: relative;
+      display: flex;
+      flex: 1;
+      align-items: center;
+      justify-content: center;
+      height: 100%;
+      font-size: @password-input-font-size;
+      line-height: 1.2;
+      background-color: @password-input-background-color;
+    }
+
+    i {
+      position: absolute;
+      top: 50%;
+      left: 50%;
+      width: @password-input-dot-size;
+      height: @password-input-dot-size;
+      background-color: @password-input-dot-color;
+      border-radius: 100%;
+      transform: translate(-50%, -50%);
+      visibility: hidden;
+    }
+  }
+
+  &__cursor {
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    width: @number-keyboard-cursor-width;
+    height: @number-keyboard-cursor-height;
+    background-color: @number-keyboard-cursor-color;
+    transform: translate(-50%, -50%);
+    animation: @number-keyboard-cursor-animation-duration van-cursor-flicker
+      infinite;
+  }
+}
+
+@keyframes van-cursor-flicker {
+  from {
+    opacity: 0;
+  }
+
+  50% {
+    opacity: 1;
+  }
+
+  100% {
+    opacity: 0;
+  }
+}