:root {
  color-scheme: light;
  font-family: Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: #0b0c0c;
  background: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

.site-header {
  border-bottom: 10px solid #1d70b8;
  background: #0b0c0c;
  color: #ffffff;
}

.site-header__inner,
main,
.site-footer__inner {
  width: min(100% - 30px, 960px);
  margin: 0 auto;
}

.site-header__inner {
  padding: 14px 0;
  font-size: 1.2rem;
  font-weight: 700;
}

main {
  padding: 40px 0 60px;
}

h1 {
  max-width: 20ch;
  margin: 0 0 24px;
  font-size: clamp(2rem, 6vw, 3rem);
  line-height: 1.05;
}

h2 {
  margin: 32px 0 12px;
  font-size: 1.5rem;
  line-height: 1.2;
}

p,
ul {
  max-width: 66ch;
  margin: 0 0 20px;
}

a {
  color: #1d70b8;
  text-decoration-thickness: max(1px, .0625rem);
  text-underline-offset: .1578em;
}

a:visited {
  color: #4c2c92;
}

a:hover {
  color: #003078;
  text-decoration-thickness: max(3px, .1875rem);
}

a:focus {
  color: #0b0c0c;
  background: #ffdd00;
  outline: 3px solid transparent;
  box-shadow: 0 -2px #ffdd00, 0 4px #0b0c0c;
  text-decoration: none;
}

.site-footer {
  border-top: 1px solid #b1b4b6;
  background: #f3f2f1;
}

.site-footer__inner {
  padding: 24px 0 32px;
}

.site-footer p {
  margin: 0;
  color: #505a5f;
  font-size: .9rem;
}

@media (min-width: 40em) {
  :root {
    font-size: 19px;
  }

  .site-header__inner,
  main,
  .site-footer__inner {
    width: min(100% - 60px, 960px);
  }
}