:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --text: #1b1b1b;
  --accent: #2c4a3e;
  --accent-hover: #243f35;
  --line: #d9d5cc;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.125rem;
  line-height: 1.55;
  overflow-wrap: break-word;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: 0;
  transform: translateY(-120%);
  background: var(--surface);
  color: var(--text);
  padding: 0.45rem 0.7rem;
}

.skip:focus {
  position: static;
  transform: none;
  display: inline-block;
  margin: 0.75rem 1rem 0;
}

.wrap {
  width: 100%;
  max-width: 42rem;
  margin-inline: auto;
  padding: 1.25rem 1rem 1.5rem;
}

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

.header-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  padding: 0.15rem 0;
}

.wordmark-text {
  text-decoration: none;
}

.wordmark:hover .wordmark-text,
.wordmark:focus-visible .wordmark-text {
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

/* Empty square reserved for a future small bird mark. */
.logo-slot {
  width: 1.75rem;
  height: 1.75rem;
  flex: none;
  border: 1px solid var(--line);
  background: var(--bg);
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav a {
  display: inline-block;
  padding: 0.45rem 0;
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-hover);
}

nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 600;
  text-decoration-thickness: 2px;
}

:focus {
  outline: 3px solid var(--text);
  outline-offset: 3px;
}

:focus:not(:focus-visible) {
  outline: none;
}

:focus-visible {
  outline: 3px solid var(--text);
  outline-offset: 3px;
}

main {
  flex: 1 0 auto;
}

main:focus {
  outline: none;
}

h1,
h2 {
  line-height: 1.25;
  font-weight: 600;
}

h1 {
  margin: 0.25rem 0 1.25rem;
  font-size: 1.6rem;
}

h2 {
  margin: 0 0 0.45rem;
  font-size: 1.2rem;
}

p {
  margin: 0.55rem 0;
}

main ul {
  margin: 0.35rem 0 0;
  padding-left: 1.2rem;
}

main li + li {
  margin-top: 0.4rem;
}

section + section {
  margin-top: 1.75rem;
}

main section[id] {
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.cta-row {
  margin-top: 1.75rem;
}

.cta {
  display: inline-block;
  background: var(--accent);
  color: var(--surface);
  text-decoration: none;
  font-weight: 600;
  padding: 0.7rem 1.1rem;
}

.cta:hover {
  background: var(--accent-hover);
  color: var(--surface);
}

dt {
  margin-top: 1rem;
  font-weight: 600;
}

dd {
  margin: 0.15rem 0 0;
}

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

.site-footer .wrap {
  padding-top: 1rem;
  padding-bottom: 1.25rem;
}

@media (min-width: 52rem) {
  .wrap {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .header-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
  }

  h1 {
    font-size: 2rem;
  }
}