:root {
  --primary-color: #2996CC;
  --secondary-color: #F1F8FC;
  --blank-color: #FFFFFF;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family:
    "Hiragino Kaku Gothic Pro",
    "Hiragino Sans",
    Meiryo,
    sans-serif;
  line-height: 1.5;
}

p {
  margin: 4px 0;
}
a {
  color: inherit;
  text-decoration: none;
}
a:visited {
  color: inherit;
}

h2 {
  font-size: 16px;
}
h3 {
  font-size: 20px;
}
h4 {
  font-size: 18px;
}
h5, .h5-text {
  font-weight: bold;
  font-size: 16px;
}
body {
  font-size: 16px;
}
.text-small {
  font-size: 14px;
}

@media (min-width: 320px) {
  h2 {
    font-size: 20px;
  }
  h3 {
    font-size: 28px;
  }
  h4 {
    font-size: 22px;
  }
  h5, .h5-text {
    font-size: 20px;
  }
  body {
    font-size: 18px;
  }
  .text-small {
    font-size: 16px;
  }
}

@media (min-width: 360px) {
  h2 {
    font-size: 22px;
  }
  h3 {
    font-size: 32px;
  }
  h4 {
    font-size: 20px;
  }
  h5, .h5-text {
    font-size: 20px;
  }
  body {
    font-size: 18px;
  }
  .text-small {
    font-size: 16px;
  }
}
@media (min-width: 480px) {
  h2 {
    font-size: 28px;
  }
  h3 {
    font-size: 32px;
  }
  h4 {
    font-size: 24px;
  }
  h5, .h5-text {
    font-size: 22px;
  }
  body {
    font-size: 20px;
  }
  .text-small {
    font-size: 18px;
  }
}
@media (min-width: 680px) {
  h2 {
    font-size: 36px;
  }
  h3 {
    font-size: 40px;
  }
  h4 {
    font-size: 24px;
  }
  h5, .h5-text {
    font-size: 22px;
  }
  body {
    font-size: 20px;
  }
  .text-small {
    font-size: 18px;
  }
}
@media (min-width: 800px) {
  h2 {
    font-size: 50px;
  }
  h3 {
    font-size: 40px;
  }
  h4 {
    font-size: 24px;
  }
  h5, .h5-text {
    font-size: 22px;
  }
  body {
    font-size: 20px;
  }
  .text-small {
    font-size: 18px;
  }
}

h2 {
  margin: 0;
  display: block;
}
h2 span {
  display: block;
}

h3 {
  margin: 0;
  text-align: center;
}
h4 {
  margin: 0;
}
h5, .h5-text {
  margin: 0;
  text-align: center;
}

section {
  display: flex;
  justify-content: center;
  width: 100%;
  padding: 40px 20px 40px 20px;
  box-sizing: border-box;
}

@media (min-width: 480px) {
  section {
    padding: 80px 36px 80px 36px;
  }
}

section .section-content {
  max-width: 985px;
  width: 100%;
}

section .desc {
  margin-top: 12px;
}

section .desc span {
  display: block;
}

body .detail-link {
  color: var(--primary-color);
  text-decoration: none;
  display: inline-block;
}
body .detail-link:hover {
  text-decoration: underline;
}

h3.section-single-header {
  margin-bottom: 24px;
}

@media (min-width: 680px) {
  h3.section-single-header {
    margin-bottom: 80px;
  }
}