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

body {
  min-width: 1280px;
  display: relative;
}

.container {
  width: 1200px;
  margin: 0 auto;
}

main {
  background-image: url("./images/bg.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 100vh;
}

header {
  height: 60px;
  background: #ffffff;
  display: flex;
  align-items: center;
}

header > div {
  display: flex;
  align-items: center;
  font-weight: 500;
  font-size: 17px;
  color: #3d3d3d;
  line-height: 24px;
}

nav {
  top: 97px;
  position: fixed;
  z-index: 100;
  left: 50%;
  transform: translateX(-50%);
}

nav .nav-list {
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  background: hsla(0, 0%, 97.3%, 0.5);
  border: 1px solid #fff;
  box-shadow: 0 12px 48px 0 rgba(6, 10, 38, 0.15);
  backdrop-filter: blur(20px);
  border-radius: 14px;
}

nav .nav-list .nav-item {
  position: relative;
  width: 132px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  font-size: 16px;
  color: #3d3d3d;
  line-height: 22px;
  user-select: none;
  cursor: pointer;
}

#slider {
  position: absolute;
  bottom: 0;
  height: 2px;
  background: #306ffa;
  transition: all 0.3s ease-in-out;
}

.title {
  padding-top: 142px;
  text-align: center;
}

.box {
  position: relative;
  padding: 94px 0 55px;
}

.box .content {
  height: 540px;
  background: #fff;
  box-shadow: 0px 4px 31px 0px rgba(0, 0, 0, 0.05);
  border-radius: 20px 20px 20px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

h2 {
  font-weight: 500;
  font-size: 40px;
  color: #3d3d3d;
  line-height: 56px;
  text-align: left;
}

p {
  font-weight: 400;
  font-size: 28px;
  color: #3d3d3d;
  line-height: 39px;
  letter-spacing: 1px;
  text-align: left;
  margin-top: 26px;
}

.btn {
  background: url("./images/btn.png");
  width: 203px;
  height: 53px;
  margin-top: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  cursor: pointer;
  font-weight: 500;
  font-size: 24px;
  color: #ffffff;
  line-height: 29px;
  transition: all 0.3s ease-in-out;
  user-select: none;
}

.btn:hover {
  transform: translateY(-5px);
}

.box img {
  position: absolute;
}

.content-left {
  padding-left: 98px;
}

.content-right {
  padding-left: 586px;
}

.img-right {
  top: 30px;
  right: -80px;
}

.img-left {
  top: 30px;
  left: -80px;
}

.download-btn {
  gap: 4px;
  /* transition: all 0.3s ease-in-out; */
}

.download-btn-bg {
  transition: all 0.3s ease-in-out;
  opacity: 0;
  z-index: -1;
  position: absolute;
  width: 104px;
  height: 42px;
  background-image: url("./images/download-btn-hover.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

nav .nav-list .nav-item.download-btn:hover {
  color: #fff;
  transition: all 0.3s ease-in-out;
}

.download-btn:hover .download-btn-bg {
  opacity: 1;
}

footer {
  height: 550px;
  background-color: #000;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 30px 0 16px;
  /* padding-bottom: 16px; */
  border-bottom: 1px solid #333;
}

.footer-title {
  font-weight: 500;
  font-size: 24px;
  color: #ffffff;
  line-height: 34px;
  text-align: left;
}

.footer-container p {
  font-weight: 400;
  font-size: 20px;
  color: #ffffff;
  line-height: 38px;
  text-align: left;
}

.footer-bottom {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-top: 13px;
  gap: 20px;

  font-weight: 400;
  font-size: 14px;
  color: #ffffff;
  line-height: 20px;
  text-align: left;
}

a {
  text-decoration: none;
  color: inherit;
  outline: none;
  border: none;
  background: none;
}