html {
  font-size: 62.5%;
  height: 100%;
}

body {
  height: 100%;
  font-size: 16px;
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  color: #333;
}

img {
  width: 100%;
}

h1 {
  font-weight: 400;
  letter-spacing: 0.05em;
  line-height: 1.6;
}

a {
  color: #0066cc;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #004999;
  text-decoration: underline;
}

.maintenance {
  max-width: 1100px;
  line-height: 1.7;
  padding: 0 20px;
}

.maintenance__wrapper {
  background-color: #E6EDF2;
  width: 100%;
  min-height: 100%;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px 0;
}

.maintenance__title {
  font-size: 3.2rem;
  margin-bottom: 4vh;
  color: #222;
}

.maintenance__text {
  font-size: 2rem;
  margin-bottom: 3vh;
  line-height: 1.8;
}

.maintenance__logo {
  margin-top: 60px;
}

.maintenance__logo img {
  max-width: 179px;
  opacity: 0.9;
}

@media screen and (max-width: 768px) {
  .maintenance__title {
    font-size: 2.4rem;
    margin-bottom: 3vh;
  }

  .maintenance__text {
    font-size: 1.6rem;
    margin-bottom: 2.5vh;
  }

  .maintenance__logo {
    margin-top: 40px;
  }

  .maintenance__logo img {
    max-width: 150px;
  }
}

@media screen and (max-width: 480px) {
  .maintenance {
    padding: 0 15px;
  }

  .maintenance__title {
    font-size: 2rem;
  }

  .maintenance__text {
    font-size: 1.4rem;
  }

  .maintenance__logo {
    margin-top: 30px;
  }

  .maintenance__logo img {
    max-width: 120px;
  }
}