body {
  font-family: Arial, sans-serif;
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: #000;
}

#background-image {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
  filter: blur(40px) brightness(0.7);
  opacity: 0.8;
}

#header {
  background-color: #ffffff;
  padding: 24px 32px;
  display: flex;
  align-items: center;
  position: sticky;
}

#header #logo {
  height: 40px;
  margin-right: 20px;
}

#header #title {
  margin-top: 10px;
  font-size: 28px;
  font-weight: bold;
}

#main-container {
  flex: 1;
  display: flex;
  align-items: center;
}

#container {
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
}

#card {
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  overflow: hidden;
}

#card-header {
  display: flex;
  align-items: center;
  padding: 36px;
  color: white;
  position: sticky;
}

#card-header #icon {
  width: 96px;
  height: 96px;
  border-radius: 16px;
  margin-right: 24px;
}

#card-header #app-title {
  font-size: 32px;
  font-weight: bold;
}

#card-content {
  background-color: rgba(255, 255, 255, 0.95);
  justify-content: space-between;
  align-items: center;
  padding: 36px;
  display: flex;
  position: sticky;
}

#app-info {
  flex: 1;
}

#app-info #version {
  font-size: 22px;
  margin-bottom: 12px;
  font-weight: 500;
}

#app-info #date,
#app-info #size {
  font-size: 18px;
  margin-bottom: 6px;
}

#download-button {
  display: inline-block;
  background-color: #007bff;
  color: white;
  text-decoration: none;
  padding: 20px 40px;
  border-radius: 12px;
  font-size: 20px;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}