* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

a {
  text-decoration: none;
}

input, label {
  user-select: none;
  /* 禁止文字被选中 */
  -webkit-tap-highlight-color: transparent;
  /* 设置点击时的高亮颜色为透明 */
}

input, textarea {
  border-radius: 5px;
  border: 1px solid var(--divider-color);
  -webkit-tap-highlight-color: transparent;
}

/* no outline while focused */
textarea:focus,
textarea:active {
  outline: none;
  border: 2px solid var(--primary-color);
}

input:focus,
input:active {
  outline: none;
  border: 2px solid var(--primary-color);
}

body {
  font-family: -apple-system, system-ui, 'Helvetica Neue', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
  font-size: 16px;

  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;

  /* --primary-color: #4CAF50; */
  /* --primary-color: #4CC486; */
  --primary-color: #AA5486;
  --primary-trans-color: rgb(255, 63, 26);
  /* --secondary-color: #F5FFF4; */
  --secondary-color: #FAF6E3;

  --text-weight-normal: 100;
  --text-weight-middle: 500;
  --text-weight-bold: 900;

  --text-primary-color: #1A237E;
  --text-secondary-color: #5f6368;

  --el-input-focus-border: black;
  --el-input-focus-border-color: black;

  --divider-color: #f3f3f3;
  --divider-color-dark: #e0e0e0;

  --app-page-padding: 10px;


  --font-size-extra-large: 2rem;
  --font-size-large: 1.5rem;
  --font-size-title: 1.3rem;
  --font-size-normal-bigger: 1.2rem;
  --font-size-normal: 1rem;
  --font-size-middle: 0.9rem;
  --font-size-small: 0.8rem;
  --font-size-tiny: 0.7rem;
  --font-size-button: 1rem;

  -webkit-user-select: none;
  user-select: none;
}

.input {
  padding: 10px;
  border: 1px solid var(--divider-color);
  border-radius: 5px;
}

.input:active {
  border: 2px solid var(--primary-color);
}

.button {
  background-color: var(--primary-color);
  color: white;
  font-size: 1.2rem;
  border-radius: 5px;
  border: none;
  font-weight: var(--text-weight-middle);
  width: 100%;
  padding: 12px 0px;
  text-align: center;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.button-red {
  background-color: red;
}

.button-small {
  width: auto;
  padding: 5px 10px;
  font-size: 0.8rem;
}

.button-white {
  background-color: white;
  color: black;
  padding: 15px 20px;
  font-size: 1rem;
  /* shadow */
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--text-secondary-color);
}


/* pop message window */
.pop_wrapper {
  position: fixed;
  top: 0px;
  left: 0px;
  width: 100%;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;

}

.pop_msg_container {
  max-width: 90%;
  min-width: 70%;
  background-color: white;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 10px;

}

.pop_container_top {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
}

.pop_title {}

.pop_close {
  cursor: pointer;
}

.pop_container_middle {}

.pop_msg_content {
  padding: 20px;
  text-align: center;
}

.pop_container_bottom {
  padding: 20px;
  display: flex;
  flex-direction: row;
  justify-content: center;
}


.pop_loading_container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: white;
  border-radius: 10px;
  padding: 20px;
  width: 300px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }

.pop_loading_icon {
  width: 50px;
  height: 50px;
  border: 3px solid var(--divider-color);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.pop_loading_text {
  padding: 10px 0px;
  text-align: center;
}


.page-container {
  display: flex;
  flex-direction: row;
}

.index-page {
  width: calc(100vw);
  height: calc(90vh);
  padding: 10px;
}

/* 隐藏原生的checkbox */
input[type="checkbox"] {
  display: none;
}

/* 创建自定义的checkbox外观 */
input[type="checkbox"]+label {
  position: relative;
  padding-left: 30px;
  /* 调整复选框的大小 */
  cursor: pointer;
  /* display: inline-block; */
  display: flex;
  line-height: 20px;
  /* 调整与文本的垂直对齐 */
}

/* 创建复选框的外观 */
input[type="checkbox"]+label:before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 20px;
  /* 调整复选框的大小 */
  height: 20px;
  /* 调整复选框的大小 */
  border: 2px solid #000;
  /* 黑色边框 */
  background-color: #fff;
  /* 背景颜色 */
}

/* 创建选中时的勾 */
input[type="checkbox"]:checked+label:before {
  content: "\2713";
  /* Unicode码，表示勾 */
  font-size: 16px;
  /* 调整勾的大小 */
  line-height: 20px;
  /* 与文本垂直居中对齐 */
  color: #000;
  /* 勾的颜色 */
  background-color: #fff;
  /* 背景颜色 */
  text-align: center;
  /* 居中对齐 */
  border: 2px solid #000;
  /* 选中时的边框颜色 */
}

/* 隐藏原生的radio */
input[type="radio"] {
  display: none;
}

/* 创建自定义的radio外观 */
input[type="radio"]+label {
  position: relative;
  padding-left: 30px;
  /* 调整radio的大小 */
  cursor: pointer;
  /* display: inline-block; */
  display: flex;
  line-height: 20px;
  /* 调整与文本的垂直对齐 */
}

/* 创建radio的外观，一个黑色的圆圈 */
input[type="radio"]+label:before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  /* 调整radio的大小 */
  height: 26px;
  /* 调整radio的大小 */
  border: 2px solid #000;
  /* 黑色边框 */
  border-radius: 50%;
  /* 圆形边框 */
  background-color: #fff;
  /* 背景颜色 */
  box-sizing: border-box;
  /* 让边框包含在元素内部 */
}

/* 创建选中时的黑点 */
input[type="radio"]:checked+label:after {
  content: "";
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  /* 调整黑点的大小 */
  height: 10px;
  /* 调整黑点的大小 */
  background-color: #000;
  /* 黑色 */
  border-radius: 50%;
  /* 圆形 */
}

input[type="radio"]+label:after {
  content: "";
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 0;
  /* 调整黑点的大小 */
  height: 0px;
  /* 调整黑点的大小 */
  background-color: #000;
  /* 黑色 */
  border-radius: 50%;
  /* 圆形 */
}


.app-frame {
  padding: 10px;
}


.index-container {
  width: 100%;
  min-height: 100vh;
  background-color: var(--primary-color);
  display: flex;
  flex-direction: column;
}

.content-container {
  background-color:#FAF6E3;
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  padding: 30px 20px;
  width: 100%;
  flex:1;
  z-index: 5;
}


.index-top {
  padding: 0px var(--app-page-padding) 20px;
  color:white;
}
.index-top-title {
  font-size: 2rem;
  font-weight: var(--text-weight-bold);
}
.index-top-desc {
  padding: 10px 0px;
  z-index: 5;
  font-size: 1.2rem;
}

/* index page */
.index-chapters {
  display: flex;
  flex-direction: column;
}

.index-chapter {
  border-radius: 10px;
  margin-bottom: 20px;
  background-color: white;
  /* shadow */
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: 3px 3px 10px rgba(0, 0, 0, 0.1);

}

.index-chapter-img img {
  width: 100%;
  border-radius: 8px 8px 0px 0px;
  /* fit mode */
  object-fit: cover;
  display: block;
}

.index-chapter-title {
  padding: 15px 0px;
  font-weight: var(--text-weight-middle);
  font-size: 1.2rem;

}

.index-learn-progress {
  padding: 0px 0px 20px 0px;
  text-align: center;
  font-size: 1.1rem;
}

/* chapter */
.chapter-container {
  display: flex;
  flex-direction: column;
  padding: var(--app-page-padding);
}

.chapter-title {
  text-align: center;
  padding: 20px 0px;
  font-weight: var(--text-weight-middle);
  font-size: 1.5rem;
  color:white;
}


.chapter-desc {
  text-align: center;
  padding: 0px 0px 20px 0px;
  font-weight: var(--text-weight-middle);
  font-size: 1rem;
  border-radius: 5px;
  background-color: white;
}

.chapter-desc img {
  width: 100%;
  border-top-left-radius: 5px;
  border-top-right-radius: 5px;
}

.chapter-desc div {
  text-align: left;
  padding: 10px;
  font-size: 1rem;
  line-height: 1.8rem;
  color: var(--text-secondary-color);
}

.chapter-ops {
  display: flex;
  flex-direction: column;
  padding: 20px 0px;
  background-color: var(--secondary-color);
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  padding: 20px;
  margin-top: 20px;
  flex:1;

}

.chapter-step {
  padding: 10px;
  text-align: center;
  background-color: white;
  border-radius: 5px;
  margin-top: 20px;

}

.chapter-scene {
  margin-top: 20px;
  padding: 10px;
  text-align: center;
  background-color: white;
  border-radius: 5px;
}

.chapter-continue {
  margin-top: 20px;
  padding: 10px;
  text-align: center;
  background-color: white;
  border-radius: 5px;
}

.chapter-scene-list {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  background-color: var(--secondary-color);
  flex:1;
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  padding-top: 30px;
}

.chapter-scene-item {
  margin: 10px;
  border-radius: 5px;
  background-color: white;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  display: flex;
  flex-direction: row;
  align-items: center;
}

.chapter-scene-no {
  background-color: var(--primary-color);
  color:white;
  border-top-left-radius: 5px;
  border-bottom-left-radius: 5px;
  height: 100%;
  width:40px;
  display: flex;
  flex-direction: row;
  align-items: center;
  font-weight: var(--text-weight-bold);
  justify-content: center;

}
.chapter-scene-title {
  display: flex;
  flex-direction: column;
  align-items: start;
  justify-content: center;
  padding: 10px 10px;
  flex:1;

}

.chapter-scene-member-only {
  font-size: 0.8rem;
  display: flex;
  flex-direction: row;
  align-items: center;
  padding: 5px;
}



/* section index page */
.section-number {
  font-size: 1.5rem;
  text-align: center;
  padding-top: 70px;
}

.section-title {
  font-size: 1.5rem;
  font-weight: var(--text-weight-middle);
  text-align: center;
  padding: 50px 0px;
}

.section-background {
  background-color: var(--primary-color);
  color: white;
  padding: 20px;
  font-size: 1.2rem;
  font-weight: var(--text-weight-middle);
  line-height: 2rem;
  border-radius: 10px;
  margin-top: 20px;
  text-align: center;
}

/* example */
.example-scene-title {
  padding: 10px 0px 20px 0px;
  background-color: var(--secondary-color);
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
}

.example-scene-title img {
  width: 60px;
}

.example-scene-title div {
  text-align: left;
  padding-left:20px;
  font-size: 1.5rem;
  font-weight: var(--text-weight-middle);
}

.example-background {
  font-size: 1rem;
  text-align: center;
  padding: 10px 20px;
  background-color: white;
  color: var(--primary-color);
  margin: 10px;
  border-radius: 10px;
}

.example-background-title {
  font-size: 1.2rem;
  font-weight: bold;
  text-align: center;
  padding: 10px 0px;
  color: var(--primary-color);
}

.example-background-content {
  font-size: 1rem;
  text-align: left;
  padding: 5px 0px;
}



.example-title {
  font-size: 1.5rem;
  font-weight: var(--text-weight-middle);
  text-align: center;
  color:white;
  padding: 20px 0px;
}

.example-play {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 0px;
  background-color: white;
  border-radius: 10px;
  width: 50%;
}

.example-play img {
  width: 100px;
  cursor: pointer;
}

.example-play-tips {
  font-size: 1rem;
}

.example-explain {
  flex-direction: column;
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  background-color: var(--secondary-color);
  padding: var(--app-page-padding);
  flex:1;
  margin-top: 20px;
}

.example-explain-title {
  font-size: 1rem;
  font-weight: var(--text-weight-middle);
  padding: 10px 10px;
  background-color: var(--primary-color);
  color: white;
  display: inline-block;
  border-radius: 5px;
}

.example-explain-text {
  font-size: 1rem;
  padding: 10px 0px;
  line-height: 1.5rem;
}

.example-explain-desc-title {
  font-size: 1rem;
  font-weight: var(--text-weight-middle);
  padding: 10px 10px;
  background-color: var(--primary-color);
  color: white;
  display: inline-block;
  border-radius: 5px;
  margin-top: 10px;

}

.example-explain-desc {
  font-size: 0.8rem;
  padding: 10px 0px;
  line-height: 1.8rem;
  font-size: .9rem;
}
.example-options {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
}

.example-option {
  display: flex;
  flex-direction: row;
  align-items: center;
  padding: 10px;
}

.example-option img {
  width: 30px;
}
.example-option div {
  margin-left: 5px;
}


.good-examples {
  display: flex;
  flex-direction: column;
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  background-color: var(--secondary-color);
  padding: var(--app-page-padding);
  flex:1;
}

.good-example {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--primary-color);
  border-radius: 5px;
  margin-bottom: 20px;
  background-color: white;
}

.good-example-answer {
  padding: 10px;
  display: flex;
  flex-direction: row;
  align-items: center;
  border-bottom: 1px dashed var(--primary-color);
  line-height: 1.5rem;
  font-weight: bold;
}

.good-example-answer img {
  width:30px;
  margin-left: 10px;
}

.good-example-explain {
  padding: 10px;
  color: var(--text-secondary-color);
  font-size: .9rem;
  line-height: 1.5rem;
}

/* login */
.login-container{
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin-top: 50px;
}

.login-title {
  color: var(--primary-color);
  text-align: center;
  padding: 10px;
}

.login-content {
  display: flex;
  flex-direction: column;
}

.login-text {
  border-radius: 10px;
  padding:10px;
  border: 1px solid var(--primary-color);
  font-size: 1rem;
}

.login-text:active {
  border: 2px solid var(--primary-color);
}

/* my page */
.my-container {
  width: 100%;
}

.my-header {
  background-color: var(--primary-color);
  color:white;
}

.my-header-title {
  font-size: .7rem;
  font-weight: var(--text-weight-bold);
  padding: 30px 0px 0px 0px;
  text-align: center;
}

.my-header-menu {
  margin-top: 20px;
  display: flex;
  flex-direction: row;
  justify-content: space-around;
}

.my-header-item {
  padding: 10px 0px 20px 0px;
  text-align: center;
  cursor: pointer;
}

.my-header-item-title {
  font-size: 1rem;
  padding: 10px 0px;
}

.my-header-item-value {
  font-size: 1.5rem;
  font-weight: var(--text-weight-bold);
}

.my-menus {
  display: flex;
  flex-direction: column;
  padding: 20px;
}

.my-menu-item {
  display: flex;
  flex-direction: row;
  padding: 15px 0px;
  border-bottom: 1px solid var(--divider-color);
  align-items: center;
}

.my-menu-item img {
  width: 1.5rem;
}

.my-menu-item-title {
  font-size: var(--font-size-normal);
  font-weight: var(--text-weight-middle);
  margin-left: 20px;
}

.study-list {
  display: flex;
  flex-direction: column;
}
.study-list-item {
  display: flex;
  flex-direction: column;
  padding: 10px 0px;
  border-bottom: 1px solid var(--divider-color);
  cursor: pointer;
}

.study-list-item-time {
  color: var(--text-secondary-color);
  font-size: 0.8rem;
  padding: 5px 0px;
}
.study-list-item-scene-name {
    flex:1;
    margin-right: 10px;
}
.study-list-item-chapter-name {
  color: var(--text-secondary-color);
  font-size: .8rem;

}

.study-list-item-info {
  display: flex;
  flex-direction: row;
  justify-content: 
  space-between;
  padding: 5px 0px;
}

/* purchase page */
.purchase-wrapper{
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.purchase-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.purchase-vip {
  width: 100px;
  margin-top: 10px;
}

.purchase-price {
  font-weight: var(--text-weight-bold);
  font-size: 2rem;
  padding: 10px 0px;
}

.purchase-title {
  padding: 10px;
}

.purchase-desc-title {
  padding: 10px;
  font-weight: var(--text-weight-bold);
  text-align: center;
}
.purchase-desc {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 20px 0px;
  background-color: var(--secondary-color);
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  padding: 20px;
  margin-top: 20px;
  flex:1;
}

.purchase-desc-item {
  padding: 10px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}

/* example learn records */
.example-records-title {
  padding: 10px;
  font-size: 1.5rem;
  font-weight: var(--text-weight-middle);
}
.example-records {
  display: flex;
  flex-direction: column;
}

.example-record {
  padding: 10px;
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--divider-color);
}

.example-record img {
  width: 30px;
}


/* feedback */
.feedback {
  display: flex;
  flex-direction: column;
}
.feedback-title {
  padding: 10px;
  font-size: 1.5rem;
  font-weight: var(--text-weight-middle);
}

.feedback-content {
}

.feedback-content-textarea {
  width: 100%;
  padding: 10px;
  border-radius: 5px;
  resize: none;
  border: 1px solid var(--divider-color);
  height: 200px;
  font-size: 1rem;
}

/* user rank */
.ranks {
  display: flex;
  flex-direction: column;
  padding: 10px;
}


.user-rank-separator {
  padding: 10px;
}

.user-rank-self {
  padding: 10px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  background-color: var(--primary-color);
  color:white;
}
.user-rank {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  padding: 10px;
}

.user-rank-mobile {
  flex: 1;
}

.user-rank-coins {
  color: var(--primary-color);
  font-weight: var(--text-weight-bold);
  text-align: center;
  flex: 1;
}
.user-rank-rank {
  font-weight: var(--text-weight-bold);
  width: 50px;
  text-align: center;
}

.user-rank-self .user-rank-coins {
  color:white;
}

.hstack {
  display: flex;
  flex-direction: row;
}

.vstack {
  display: flex;
  flex-direction: column;
}

.hcenter {
  justify-content: center;
}

.vcenter {
  align-items: center;
}

.play-component-playing {
  font-size: 1rem;
  font-weight: var(--text-weight-middle);
  background-color: var(--primary-color);
  color:white;
  border-radius: 5px;
  padding: 10px;
}

.play-component-normal {
  font-size: 1rem;
  background-color: white;
  color: var(--primary-color);
  border-radius: 5px;
  padding: 10px;
}

.pointview-item {
  border-bottom: 1px solid var(--divider-color);
  background-color: white;
  border-radius: 2px;
  margin-bottom: 20px;
  box-shadow: 3px 3px 20px rgba(0, 0, 0, 0.1);
}

.pointview-title {
  font-size: 1rem;
  font-weight: bold;
  padding: 10px;
  border-top-left-radius: 5px;
  border-top-right-radius: 5px;
  display: flex;
  flex-direction: row;
  align-items: center;
  border-bottom: 1px solid var(--divider-color);
}

.pointview-description {
  padding: 10px;
  line-height: 1.5rem;
  color: var(--text-secondary-color);
}

.p-b-item {
    display: flex;
    flex-direction: row;
    align-items: center;
}

.p-b-item img {
    width: 20px;
    height: 20px;
    border-radius: 50%;
}

.text-rotate-45 {
  transform: rotate(-45deg);
}

.index-category-image {
    width: 100%;
    height: 200px;
}


.rotate_processing {
    animation: spin 1s linear infinite;
}



/* iPad-specific styles */
@media only screen and (min-device-width: 768px) {
  .index-category-image {
    height: 350px;
  }
}