*{margin: 0;
padding: 0;
box-sizing: border-box;
}
ul,li{list-style: none;}
a{text-decoration: none;color:black;}
img{cursor: pointer;}
body{font: "微软雅黑";color: black;}
.nav{position: fixed;top: 0;left: 0;height: 60px;width: 100%;z-index: 9999;background: white;}
.nav-mian{display: flex; justify-content: space-between;width: 1400px;height: 60px;font-size: 24px;margin: 0 auto;}
.nav-logo {float: left;height: 60px; margin: 0 auto;}
.nav-logo img{height: 60px;}
.topmenu {
  display: flex;
  list-style: none;
}
.topmenu > li {
  position: relative; /* 关键点：二级菜单相对这个一级li定位 */
  margin-right:35px;
  margin-top: 10px;
  font-size:24px;
}
.topmenu > li > a{
  color:#000;
  text-decoration:none;
}
.topmenu > li > a:hover{
  color: darkgrey;
}

/* =====二级菜单样式===== */
.submenu {
  list-style: none;
  /* 默认隐藏 */
  display: none;
  position: absolute;
  left: 0;
  top: 100%; /* 紧贴一级菜单下方 */
  background:white ;
  width: 180px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
  padding: 8px 6px;
}
.submenu li a {
  display: block;
  padding: 8px 14px;
  font-size: 20px;
  color:#333;
  text-decoration:none;
}
/* 二级选项hover高亮，和截图灰色效果一致 */
.submenu li a:hover {
  background-color:#FDD5DC;
}
/* 悬浮一级li，显示二级下拉菜单 */
.topmenu > li:hover .submenu{
  display:block;
}
.banner{width: 100%;height: 685px;margin-top: 60px;position: relative;overflow:hidden;}
.banner img{width: 100%;height: 685px;position: absolute;top:0;left:0;display: none;}
.banner img:nth-of-type(1){display: block;}
.banner>ul{display: flex;justify-content: center;gap:20px;position:absolute;left: 50%;bottom: 20px;}
.banner>li{width: 15px;height: 15px;border-radius: 50%;background: gainsboro;z-index: 999;cursor: pointer;}
.banner>li:nth-of-type(1){background: #FDD5DC;}
.one{margin: 50px auto;width: 1400px;height: 750px;position: relative;}
.one-span {margin: 50px auto;width: 150px;display: block;position: relative;}
.one-span h3:nth-of-type(2){position: absolute;right: 25px; width: 150px;}
.one-main{width: 900px; margin: 100px auto;display: flex;gap:35px;flex-wrap: wrap;}
.one-main .zi{background-image: url(../img/紫色矩形.png);position: relative;width:210px;height: 380px;}
.one-main .zi img{position: absolute;bottom: -15px;width: 230px;height: 240px;transition: all 0.3s ease;}
.one-main .zi img:hover{transform: scale(1.1,1.1);}
.one-main .zi p{width: 10px;height: 150px;position: absolute;top: 30px;left: 50%;}
.one-main .ho{position: relative;width:210px;height: 380px;}
.one-main .ho img:nth-of-type(1){position: absolute;bottom: -15px;left: 0px;width: 210px;height: 395px;z-index: 1;}
.one-main .ho img:nth-of-type(2){position: absolute;bottom: -15px;left: 0px;width: 230px;height: 240px;z-index: 999;transition: all 0.3s ease;}
.one-main .ho img:nth-of-type(2):hover{transform: scale(1.1,1.1);}
.one-main .ho p{width: 10px;height: 150px;position: absolute;top: 30px;left: 50%;z-index: 999;}
.one-main .fen{position: relative;width:250px;height: 610px;}
.one-main .fen img:nth-of-type(1){position: absolute;bottom: -15px;left: 0px;width: 260px;height: 625px;z-index: 1;}
.one-main .fen img:nth-of-type(2){position: absolute;bottom: -15px;left: 0px;width: 250px;height: 290px;z-index: 999;transition: all 0.3s ease;}
.one-main .fen img:nth-of-type(2):hover{transform: scale(1.1,1.1);}
.one-main .fen p{width: 10px;height: 150px;position: absolute;top: 100px;left: 50%;z-index: 999;}
.one-main .lv{position: relative;width:440px;height: 200px;bottom: 240px;}
.one-main .lv img:nth-of-type(1){position: absolute;bottom: -15px;left: 0px;width: 500px;height: 205px;z-index: 1;}
.one-main .lv img:nth-of-type(2){position: absolute;bottom: -15px;right: 0px;width: 180px;height: 200px;z-index: 999;transition: all 0.3s ease;}
.one-main .lv img:nth-of-type(2):hover{transform: scale(1.1,1.1);}
.one-main .lv p{width: 150px;height: 10px;position: absolute;top: 100px;left: 60px;z-index: 999;}
.two{width: 1400px;height: 850px;margin: 50px auto;}
.two-mian{width: 1200px; margin: 100px auto;display: flex;gap:20px;flex-wrap: wrap;}
.two-mian:nth-of-type(2){width: 1200px; margin: 0 auto;display: flex;gap:20px;flex-wrap: wrap;}
.two-mian img{width:250px;height: 260px;transition: all 0.3s ease;}
.two-mian img:hover{transform: scale(1.1,1.1);}
.tu1{width: 250px; height: 50px;border: 1px solid black;}
.two-mian p{margin: 15px 10px 10px 78px;}
.three{width: 1400px;height: 600px;margin:50px auto;position: relative;}
.three-span {margin: 50px auto;width: 150px;display: block;position: relative;}
.three-span h3:nth-of-type(2){position: absolute;right: 12px; width: 150px;}
.three-mian{width: 1400px;height: 450px;display: flex;flex-wrap: nowrap;}
.three-img img{width: 680px;height: 450px;border-radius:8px;margin: 30px 0;}
.three-zi{width: 400px;height: 450px;margin: 50px 12px 20px 60px;position: relative;}
.three-zi p{font-size: 12px;line-height: 2.3;margin-top: 30px;}
.three-zi p:nth-of-type(2){position: absolute;color: pink;bottom: 40px;right: 0px;cursor: pointer;}
.three-zi p:nth-of-type(2):hover{color: gray;}
.three-zi img:nth-of-type(2){position: absolute;right: -80px;top: -60px;}
footer div{width: 100%;height: 250px;background: #FDD5DC;display: flex;justify-content: center;align-items: center;}
footer p{width: 300px;text-align: center;margin-top: 40px;}