* {
  padding: 0;
  margin: 0;
}

html, body {
  height: 100%;
  font-family: Microsoft YaHei;
}

body {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  overflow: auto;
}

#header {
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 99;
  background: #001f3a;
  box-shadow: 1px 1px 6px rgba(0,0,0,.5);
}
.wrap {
  height: 44px;
  line-height: 44px;
  width: 85%;
  margin: 10px auto;
}
#logo {
  float: left;
  text-indent: -999em;
  height: 44px;
  width: 176px;
  background: url(./images/logo.png) 0 center no-repeat;
  background-size: 80%;
}
#nav {
  float: right;
}
#nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #0ae7fc;
  padding: 2px 10px;
  position: relative;
  display: inline-block;
}
#nav a.active {
  color: #fff;
  /* background: #05b3c3; */
  border-radius: 20px;
}

#nav a.active::after {
  content: '';
  display: block;
  position: absolute;
  width: 100%;
  height: 3px;
  bottom: 0;
  left: 0;
  border-radius: 3px;
  background: #fff;
}

.page {
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.ad {
  font-size: 100px;
  line-height: 180%;
}

.pro-img2 {
  display: none;
}

.ad:nth-child(1) {
  padding-left: 6%;
}
.ad:nth-child(2) {
  float: right;
  text-align: right;
  padding-right: 6%;
}

.vh {
  width: 100%;
  color: #fff;
}

#page1 {
  background: #19354d;
}

#page2 p {
  font-size: 42px;
  text-indent: 2em;
  line-height: 200%;
  width: 80%;
}

#page3 {
  padding: 0 5%;
  background: #fff7ed;
}

#page5 {
  padding: 0 5%;
  background: #218ffd;
  color: #fff;
}

.pro-img {
  float: left;
  width: 50%;
}

.pro-text {
  width: 50%;
  padding: 40px;
  text-align: center;
}
.pro-text h1 {
  font-weight: normal;
  font-size: 44px;
}
.pro-text p {
  padding: 20px 0;
  font-size: 24px;
  text-align: left;
  text-indent: 2em;
  line-height: 200%;
}
.pro-btn {
  color: #fff;
  background: #05b3c3;
  padding: 10px 20px;
  border-radius: 4px;
  text-decoration: none;
}
.pro-btn:hover {
  background: #0ae7fc;
}
#page4 .tel {
  font-size: 28px;
  line-height: 200%;
  text-align: center;
  padding: 10%;
  width: 100%;
}
#footer {
  position: absolute;
  bottom: 0;
  height: 70px;
  width: 100%;
  text-align: center;
  line-height: 170%;
  color: #888;
}
#footer a {
  color: #888;
}

@media screen and (max-width:1366px) {
  .ad {
    font-size: 90px;
  }
}
@media screen and (max-width:1024px) {
  .ad {
    font-size: 80px;
  }
}
@media screen and (max-width:768px) {
  #nav a {
    margin-left: 4px;
  }
  .ad {
    font-size: 60px;
  }
  .pro-text p {
    font-size: 20px;
  }
  .pro-img {
    display: none;
  }
  .pro-img2 {
    width: 80%;
    height: auto;
    display: inline-block;
  }
  .pro-text {
    width: 100%;
  }
  .pro-text h1 {
    margin-top: 80px;
  }
}
@media screen and (max-width:568px) {
  .ad {
    font-size: 32px;
  }
  #page2 p {
    font-size: 24px;
  }
}
@media screen and (max-width:375px) {
  .ad {
    font-size: 28px;
  }
  #page2 p {
    font-size: 22px;
  }
  .pro-text h1 {
    margin-top: 40px;
    font-size: 34px;
  }
  .pro-text p {
    font-size: 16px;
  }
  #page4 .tel {
    font-size: 16px;
  }
  #footer {
    font-size: 12px;
    height: 52px;    
  }
  #logo {
    height: 32px;
  }
  .wrap {
    line-height: 42px;
  }
  #nav {
    font-size: 14px;
  }
}

/* wave */
@keyframes move_wave {
  0% {
      transform: translateX(0) translateZ(0) scaleY(1)
  }
  50% {
      transform: translateX(-25%) translateZ(0) scaleY(0.55)
  }
  100% {
      transform: translateX(-50%) translateZ(0) scaleY(1)
  }
}
.waveWrapper {
  overflow: hidden;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 219px;
  margin: auto;
}

.waveWrapperInner {
  position: absolute;
  width: 100%;
  overflow: hidden;
  height: 100%;
  bottom: -1px;
}
@media screen and (max-width: 375px) {
  .waveWrapperInner {
    width: 400%;
  }
}
.bgTop {
  z-index: 15;
  opacity: 0.5;
}
.bgMiddle {
  z-index: 10;
  opacity: 0.75;
}
.bgBottom {
  z-index: 5;
}
.wave {
  position: absolute;
  left: 0;
  width: 200%;
  height: 100%;
  background-repeat: repeat no-repeat;
  background-position: 0 bottom;
  transform-origin: center bottom;
}
.waveTop {
  background-size: 50% 100px;
}
.waveAnimation .waveTop {
animation: move-wave 3s;
 -webkit-animation: move-wave 3s;
 -webkit-animation-delay: 1s;
 animation-delay: 1s;
}
.waveMiddle {
  background-size: 50% 120px;
}
.waveAnimation .waveMiddle {
  animation: move_wave 10s linear infinite;
}
.waveBottom {
  background-size: 50% 100px;
}
.waveAnimation .waveBottom {
  animation: move_wave 15s linear infinite;
}