:root {
    --title: #333;
    --message: #666;
    --bg-color: #fff;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html{
  font-size: 62.5%;
}
body {
  font-family: "Noto Sans JP", sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.container {
  background: var(--bg-color);
  border-radius: 2rem;
  padding: 3rem 2rem;
  max-width: 600px;
  width: 100%;
  text-align: center;
}

.title {
  color: var(--title);
  font-size: 4rem;
  font-weight: bold;
  margin-bottom: 2rem;
}

.message {
  font-size: 1.6rem;
  color: var(--message);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.time-info {
  background: var(--title);
  padding: 2rem;
  border-radius: 1rem;
  margin-top: 3rem;
}

.time-label {
  font-size: 1.6rem;
  color: var(--bg-color);
  margin-bottom: 1rem;
}

.time-value {
  font-size: 2.8rem;
  color: var(--bg-color);
  font-weight: bold;
}

@media (max-width: 600px) {
  body {
    padding: 1rem;
  }
  .container {
    padding: 3rem 2rem;
  }

  .title {
    font-size: 3.6rem;
  }
}