body,
html {
  height: 100%;
  overflow: hidden;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, Tahoma, Arial,
    Hiragino Sans GB, Microsoft YaHei, sans-serif;
}

#container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  height: 100%;
  padding: 20px;
  gap: 20px;
  box-sizing: border-box;
}

.title {
  margin-top: 5vh;
  padding: 10px 0;
  font-size: 32px;
  font-weight: 600;
  text-align: center;
}

.subtitle {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 14px;
  color: gray;
}

.bg {
  flex-grow: 1;
  height: 100%;
  width: auto;
  max-height: 50vh; 
  object-fit: contain;
  margin-bottom: auto;
}

@media (min-width: 600px) {
  .title {
    font-size: 36px;
  }
  
  .subtitle {
    font-size: 14px;
  }
}


@media (min-width: 1024px) {
  .title {
    font-size: 48px;
  }
  
  .subtitle {
    font-size: 16px;
  }

  .bg {
    max-height: 60vh; 
  }
}