body {
  margin: 0;
  overflow: hidden;
  width: 100vw;
  height: 100vh;
  /* 加载背景图 */
  background-image: url("/images/bg.png");
  /* 背景图垂直、水平均居中 */
  background-position: center center;
  /* 背景图不平铺 */
  background-repeat: no-repeat;
  /* 当内容高度大于图片高度时，背景图像的位置相对于viewport固定 */
  background-attachment: fixed;
  /* 让背景图基于容器大小伸缩 */
  background-size: cover;
  /* 设置背景颜色，背景图加载过程中会显示背景色 */
  /* background-color: #464646; */
}

a {
  text-decoration: none;
  color: #65433d;
}

.bg {
  display: block;
  margin: 0;
  overflow: hidden;
  width: 100vw;
  height: 100vh;
  /* 加载背景图 */
  background-image: url("/images/1.png");
  /* 背景图垂直、水平均居中 */
  background-position: center center;
  /* 背景图不平铺 */
  background-repeat: no-repeat;
  /* 当内容高度大于图片高度时，背景图像的位置相对于viewport固定 */
  background-attachment: fixed;
  /* 让背景图基于容器大小伸缩 */
  background-size: 100vw auto;
}

.menu {
  overflow: hidden;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.menu-item {
  height: 10vh;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 5vh;
  background-image: url("/images/2.png");
  background-position: center center;
  background-repeat: no-repeat;
  background-size: auto 100%;
  color: #65433d;
}

/* 竖屏 */
@media (orientation: portrait) {
  .menu-item {
    height: 10vh;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 5vh;
    background-image: url("/images/2.png");
    background-position: center center;
    background-repeat: no-repeat;
    background-size: auto 50%;
    color: #65433d;
  }

  .line {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  .shuyu-content {
    gap: 20px;
    overflow-y: scroll;
  }
}

@media screen and (min-width: 880px) {
  .menu-item>span {
    font-size: 30px;
    font-weight: bold;
  }

  .header>span {
    font-size: 30px;
    font-weight: bold;
    color: #65433d;
    letter-spacing: 4px;
  }

  .shuyu-item {
    font-size: 30px;
    font-weight: bold;
    letter-spacing: 8px;
  }
}

.menu-item>img {
  height: 100%;
}

.header {
  height: 15vh;
  display: flex;
  align-items: center;
}

.header>img {
  height: 75%;
  margin: 0 2vw;
}

.header>span {
  font-weight: bold;
  color: #65433d;
  letter-spacing: 4px;
}

.shuyu-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 7.5vw 5vw;
  overflow-y: auto;
}

.line {
  flex: 1;
  display: flex;
  justify-content: center;
}

.shuyu-item {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  background-image: url("/images/4.png");
  background-position: center center;
  background-repeat: no-repeat;
  background-size: auto 10vh;
  cursor: pointer;
  letter-spacing: 4px;
  font-weight: bold;
}

.shuyu-item>a {
  color: white;
  width: 13em;
  height: 3em;
  line-height: 3em;
  text-align: center;
}

.shuyu-item:hover {
  background-image: url("/images/3.png");
}

.modal {
  position: absolute;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: rgb(198, 198, 198, 0.5);
  display: none;
}

.modal-content-wrapper {
  z-index: 1000;
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content{
  background-color: #ffffff;
  width: 50vw;
  height: 50vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-size: 20px;
  font-weight: bold;
}