html {
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  max-width: 850px;
  margin: 0 auto;
  padding: 30px 20px;
  color: #ffffff;
  background-color: #36283a;
  background-image: linear-gradient(to bottom, #54325e, #36283a);
}
html[lang="ja"] body {
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
}
h1 {
  color: #ffffff;
  border-bottom: 2px solid #333;
  padding-bottom: 10px;
  margin: 20px 0 10px;
  font-size: 34px;
  line-height: 40px;
  font-weight: 700;
}
h2 {
  color: #ffffff;
  margin: 35px 0 10px;
  font-size: 1.4em;
  line-height: 32px;
  font-weight: 400;
}
h3 {
  color: #fff;
  font-size: 1.1em;
  line-height: 28px;
  margin: 20px 0 10px;
  font-weight: 400;
}
p {
  margin: 0 0 10px;
}
ul {
  margin: 0 0 10px;
}
p, li {
  color: #fff;
}
a {
  color: #2196f3;
  text-decoration: none;
}
a:hover, a:focus {
  text-decoration: underline;
}
.highlight-box {
  background-color: #1e1e1e;
  border: 1px solid #333;
  padding: 15px;
  border-radius: 8px;
  margin: 20px 0;
}
footer {
  margin-top: 50px;
  padding-top: 20px;
  border-top: 1px solid #333;
  font-size: 0.85em;
  color: #fff;
  text-align: center;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}
.site-header .logo {
  display: block;
  width: 116px;
  height: 24px;
}
.site-header__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 0.85em;
  text-transform: uppercase;
}

.site-header__nav a,
.language-links a {
  color: #b6a0be;
}
.site-header__nav a:hover,
.site-header__nav a[aria-current="page"],
.language-links a:hover,
.language-links a[aria-current="page"] {
  color: #fff;
  text-decoration: none;
}

.language-nav {
  margin-top: 20px;
  font-size: 0.85em;
}
.language-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}