* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

a {
  display: block;
  width: auto;
  height: auto;
  text-decoration: none;
}

.t {
  display: flex;
  justify-content: space-between;
  height: 70px;
}

.t-l,
.t-r {
  height: 70px;
  min-width: 85px;
}

.t-l {
  display: flex;
  align-items: center;
  min-width: 85px;
}

.t-l .logo {
  width: 85px;
  display: none;
  color: #000;
}

.t-l .logo.active {
  display: block;
}

.head {
  height: 70px;
  width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.head-l,
.head-r {
  display: flex;
  align-items: center;
}

.head-logo {
  width: 36px;
  height: 36px;
  background: url(../images/logo.png) center no-repeat;
  background-size: cover;
}

.head-name {
  margin: 0 12px 0 8px;
  font-size: 18px;
  font-weight: 700;
}

.head-tag {
  width: 48px;
  height: 24px;
  line-height: 24px;
  border-radius: 4.5px;
  background: #333;
  color: #ffffff;
  text-align: center;
  font-size: 14px;
  font-weight: 700;
}

.head-nav {
  margin-left: 40px;
  color: #333333;
  font-size: 16px;
  font-weight: 400;
}

.head-btn {
  width: 100px;
  height: 32px;
  line-height: 32px;
  flex-shrink: 0;
  border-radius: 4px;
  background: #F9D900;
  color: #000000;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
  margin-left: 40px;
  cursor: pointer;
}

.chunk {
  margin: 0 auto;
}

.chunk0 {
  width: 100%;
  min-height: 800px;
  min-width: 1280px;
  background: url('../images/ban.png') center no-repeat;
  background-size: cover;
  display: flex;
  justify-content: center;
  align-items: center;
}

.chunk0 .l {
  width: 500px;
  margin-right: 20px;
}

.chunk0 .tit {
  color: #333333;
  font-size: 30px;
  font-weight: 700;
}

.chunk0 .tag {
  display: flex;
  margin: 10px 0 40px;
}

.chunk0 .tag div {
  width: 100px;
  height: 32px;
  border-radius: 4px;
  background: #2B8FFF;
  text-align: center;
  line-height: 32px;
  margin-right: 9px;
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
}

.chunk0 .txt {
  color: #000;
  font-size: 16px;
}

.chunk0 .btn {
  width: 240px;
  height: 50px;
  line-height: 50px;
  text-align: center;
  color: #000;
  font-size: 18px;
  font-weight: 700;
  background: #FBDF2A;
  border-radius: 8px;
  margin: 25px 0 10px;
  cursor: pointer;
}

.chunk0 .info {
  color: #666666;
  font-size: 12px;
  font-weight: 400;
}

.chunk0 .info span {
  margin-right: 20px;
}

.chunk0 .r {
  width: 780px;
  height: 610px;
  background: url('../images/imgf_01@2x.png') center no-repeat;
  background-size: cover;
}

.chunk1,
.chunk2 {
  width: 1280px;
}

.chunk3 {
  width: 100%;
  min-width: 1280px;
  margin-top: 120px;
}

.chunk img {
  width: 100%;
  height: 100%;
  display: block;
}

.foot {
  height: 100px;
  width: 100%;
  text-align: center;
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

/* @media screen and (min-width: 1900px) and (max-width: 5000px) {
  .box {
    zoom: 1.25;
  }
}

@media screen and (max-width: 1899px) {
  .box {
    zoom: 1;
  }
} */