:root {
  font-family: 'Avenir Next', Avenir, 'Hiragino Kaku Gothic ProN', 'Yu Gothic', Meiryo, sans-serif;
  color: #424242;
  background: #fff;
  line-height: 1.85;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
header,
main,
footer {
  width: min(830px, calc(100% - 40px));
  margin: auto;
}
header {
  text-align: center;
  padding: 38px 0 44px;
}
.brand {
  display: inline-block;
}
.brand img {
  width: 230px;
  height: 160px;
  object-fit: contain;
}
nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 30px;
}
header nav {
  margin-top: 32px;
}
a {
  color: #008dad;
  text-decoration: none;
}
a:hover {
  color: #32bce5;
  text-decoration: underline;
}
a:focus-visible {
  outline: 3px solid #2498b4;
  outline-offset: 5px;
}
nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}
.languages {
  margin-top: 8px;
  gap: 24px;
  font-size: 14px;
}
.languages [aria-current] {
  text-decoration: underline;
  font-weight: 700;
}
h1,
h2,
h3 {
  color: #43a3dc;
  line-height: 1.45;
}
h1 {
  font-size: clamp(27px, 4vw, 34px);
  margin: 18px 0 24px;
  text-align: center;
}
h2 {
  font-size: 25px;
  margin: 42px 0 20px;
}
h3 {
  font-size: 20px;
}
.hero {
  text-align: center;
  padding: 22px 0 35px;
}
.intro {
  font-size: 21px;
}
.button {
  display: inline-block;
  background: #2498b4;
  color: #fff;
  padding: 12px 34px;
  margin: 18px 0 8px;
  border-radius: 3px;
  font-weight: 700;
}
.button:hover {
  background: #1684a1;
  color: #fff;
}
.note {
  font-size: 14px;
  color: #626262;
}
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 45px;
}
.prose {
  margin: 36px 0 64px;
  overflow-wrap: anywhere;
}
.prose h1 {
  margin-bottom: 28px;
}
li {
  margin-bottom: 18px;
}
footer {
  border-top: 1px solid #e4e4e4;
  padding: 24px 0 40px;
  text-align: center;
  font-size: 13px;
}
footer nav {
  margin-top: 10px;
}
@media (max-width: 480px) {
  header {
    padding: 24px 0;
  }
  .brand img {
    width: 175px;
    height: 125px;
  }
  header nav {
    margin-top: 16px;
    gap: 5px 18px;
  }
  .grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  h2 {
    font-size: 23px;
  }
  .intro {
    font-size: 19px;
  }
}