html,
body {
  height: 100%;
  width: 100%;
  padding: 0;
  margin: 0;
  font-family: Source Han Sans CN;
}

ul,
li,
p {
  list-style: none;
  padding: 0;
  margin: 0;
}
.container {
  height: 100%;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
}

.head .nav {
  display: flex;
  font-size: 0.32rem;
  padding: 0;
  margin: 0.3rem 0;
}
.head .nav li {
  cursor: pointer;
  color: #818181;
}
.head .nav li:first-child {
  margin-right: 0.8rem;
}
.head .nav li.current {
  color: #355bff;
}
.head .bg img {
  width: 100%;
  height: 100%;
  max-height: 255px;
  display: block;
  background: #000;
}

.f-btn {
  cursor: pointer;
  font-size: 0.18rem;
  display: inline-block;
  padding: 0.1rem 0.6rem;
  border-radius: 0.5rem;
  color: #fff;
  background: #4bbaff;
  background: linear-gradient(to bottom, #4bbaff 0, #023fff 100%);
  transform-style: preserve-3d;
  transition: all 0.3s ease-out;
}
.f-btn:hover {
  transform: scale(1.04);
  filter: brightness(1.05) contrast(1.05);
}

.footer {
  font-size: 0.16rem;
  height: 80px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #e2e9ff;
  font-weight: bold;
}
.footer p {
  margin: 0;
}
.footer .url {
  text-decoration: none;
  color: #333333;
}