/* 屏幕宽度 */
/* $media_num: 1200px;  */
body {
  color: #4a0400;
}

/* overflow-x:hidden; */
@media only screen and (min-width: 1200px) {
  body {
    overflow-x: hidden;
  }
}

a {
  text-decoration: none;
  cursor: pointer;
  outline: 0;
  color: #4a0400;
}

img {
  width: 100%;
  height: 100%;
}

.warp {
  margin: 0 auto;
  width: 100vw;
}

.pic {
  width: 100%;
  height: 100%;
}

.media_box {
  width: 100vw;
  height: 50vw;
  font-size: 0.88vw;
  /*17*/
  /* $media_num */
}

@media only screen and (max-width: 1200px) {
  .media_box {
    width: 1200px;
    height: 600px;
    /*0.5*width*/
    /* height: calc(var($media_num)*0.5); // 0.5*width */
    font-size: 10.6px;
    /*0.00885*$media_num*/
  }
}

/* 顶部标题 */
.title_height {
  height: 3.5vw;
}

@media only screen and (max-width: 1200px) {
  .title_height {
    height: 40px;
  }
}

.title_nav {
  height: 3.5vw;
  width: 100%;
  position: fixed;
  background-color: #fdf0d0;
  z-index: 999;
}

@media only screen and (max-width: 1200px) {
  .title_nav {
    width: 1200px;
    height: 40px;
  }
}

.title_nav .first_top {
  height: 100%;
  width: 73%;
  /* background-color: pink; */
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
}

.title_nav .logo {
  width: 3.2%;
  height: 65%;
  /* margin-left: 10%;
  margin-right: 15%; */
  margin-left: 18%;
  margin-right: 3%;
}

.title_nav .title {
  display: flex;
}

.title_nav .title .sm_title {
  cursor: pointer;
  font-size: 1.05em;
  /*17*/
  font-weight: 700;
  /* color: #fff; */
  /* margin-left: 2em; //50 */
  margin-left: 3.2em;
  /*50*/
}