:root {
  --text: #222;
  --muted: #666;
  --line: #ddd;
  --link: #005f73;
  --max: 820px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #fff;
  color: var(--text);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 17px;
  line-height: 1.6;
}

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: #8a3b2f;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: 16px;
  transform: translateY(-180%);
  background: #222;
  color: #fff;
  padding: 6px 10px;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  border-bottom: 1px solid var(--line);
}

.nav-wrap,
main,
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.nav-wrap {
  padding-top: 22px;
  padding-bottom: 18px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: baseline;
}

.brand {
  color: var(--text);
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--text);
  font-size: 0.95rem;
  text-decoration: none;
}

.nav a:hover,
.nav a[aria-current="page"] {
  text-decoration: underline;
}

main {
  padding-top: 42px;
  padding-bottom: 48px;
}

.intro {
  margin-bottom: 36px;
}

.intro-with-photo {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.profile-photo {
  width: 220px;
  max-width: 100%;
  height: auto;
}

h1,
h2,
h3,
h4 {
  line-height: 1.25;
  font-weight: 700;
}

h1 {
  margin: 0 0 8px;
  font-size: 2.1rem;
}

h2 {
  margin: 36px 0 12px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
  font-size: 1.35rem;
}

h3 {
  margin: 24px 0 10px;
  font-size: 1.05rem;
}

h4 {
  margin: 18px 0 4px;
  font-size: 1rem;
}

p {
  margin: 0 0 14px;
}

.meta,
.note,
.footer-inner {
  color: var(--muted);
}

ul,
ol {
  margin-top: 8px;
  padding-left: 22px;
}

li {
  margin-bottom: 6px;
}

.item {
  margin-bottom: 20px;
}

.item p:last-child {
  margin-bottom: 0;
}

.paper-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  padding-top: 18px;
  padding-bottom: 22px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.92rem;
}

.footer-inner p {
  margin: 0;
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .nav-wrap {
    display: block;
  }

  .nav {
    margin-top: 8px;
    gap: 12px;
  }

  main {
    padding-top: 28px;
  }

  .intro-with-photo {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .profile-photo {
    width: 190px;
  }
}