* {
  margin: 0;
  padding: 0;
  border: none;
  /* border: 1px solid red; */
}

body {
  min-width: 1400px;
  background-image: url("../images/bg.png");
  background-color: RGBA(234, 230, 218, 1);
}

a {
  cursor: pointer;
  text-decoration: none;
}

ul {
  list-style-type: none;
}

.pointer {
  cursor: pointer;
}

.flex-center-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.flex-column-center-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* 内容 */
.big-title {
  position: relative;
}

.big-title .bg {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.icon-rotateY {
  transform: rotateY(180deg);
}

.big-title .big-title-content {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.big-title .big-title-content img {
  width: 40px;
}

.big-title .big-title-content span {
  font-weight: bold;
  font-size: 34px;
  color: #794416;
  position: relative;
  top: -2px;
  padding: 0 5px;
}

.page-content {
  width: 1400px;
  margin: 0 auto;
  padding-bottom: 74px;
}

.breadcrumb {
  padding: 20px 0;
}

.breadcrumb a {
  font-weight: 400;
  font-size: 16px;
  color: #1a1b1b;
  line-height: 24px;
}

.breadcrumb a:hover {
  color: rgba(121, 68, 22, 1);
}

.page {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.page .left {
  width: 216px;
  background: #ffffff;
  border-top: 4px solid #53381b;
  border-left: 1px solid #53381b;
  border-right: 1px solid #53381b;
  border-bottom: 1px solid #53381b;
  box-sizing: border-box;
  position: relative;
  overflow: hidden;
  padding-bottom: 30px;
}

.page .left .bottom-img {
  position: absolute;
  bottom: -2px;
  display: block;
  width: 100.5%;
}

.page .left .title {
  padding: 15px 0;
}

.page .left .title img {
  width: 28px;
  margin-right: 6px;
}

.page .left .title span {
  font-weight: bold;
  font-size: 20px;
  color: #502e20;
}

.page .left .item {
  background: #fff;
  color: rgba(0, 17, 17, 1);
  height: 64px;
  transition: all 0.2s;
}

.page .left .item:hover {
  background: #85542a;
  color: #ffffff;
}

.page .left .item.on {
  background: #85542a;
  color: #ffffff;
}

.page .left .item img {
  width: 30px;
}

.page .left .item span {
  font-weight: 500;
  font-size: 20px;

  margin: 0 17px;
}

/* 本馆概述 */
.page .right {
  width: 100%;
  flex: 1;
  margin-left: 20px;
}

.page .right .title span {
  font-weight: bold;
  font-size: 28px;
  color: #111111;
  line-height: 28px;
  letter-spacing: 0.04em;
}

.page .right .info {
  width: 100%;
  padding-top: 15px;
  line-height: 30px;
  font-size: 16px;
}

.page .right .info img {
  display: block !important;
  max-width: 100% !important;
}

@media (min-width: 850px) {
  .PC {
    display: block;
  }

  .MO {
    display: none;
  }
}

/* 当前屏幕宽度小于850px时 */
@media (max-width: 850px) {
  .PC {
    display: none;
  }

  .MO {
    display: block;
  }

  .page-content {
    width: 94%;
    margin: 0 auto;
    padding-bottom: 40px;
  }

  .big-title .bg {
    height: 110px;
  }

  .breadcrumb a {
    font-size: 14px;
  }

  .page {
    flex-direction: column;
  }

  .page .right {

    margin-left: 0;
  }

  .page-content .page .right .title img {
    width: 30px;
  }

  .page .right .title span {
    font-size: 20px;
    text-align: center;
  }

  .page .menu {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-gap: 10px;
    padding-bottom: 20px;
  }

  .page .menu a {
    background-color: #fff;
    border: 1px solid rgba(133, 84, 42, 1);
    font-size: 16px;
    color: rgba(133, 84, 42, 1);
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5px 0;
  }

  .page .menu a.on {
    background-color: rgba(133, 84, 42, 1);
    color: #fff;
  }

  .page .menu a img {
    height: 25px;
  }
}