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

html {
  background: var(--background);
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--background);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.5;
}

h1,
h2,
h3,
.brand,
summary {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.25;
  color: var(--ink);
}

h1 {
  margin: 0 0 0.6rem;
  font-size: 2.125rem;
  letter-spacing: -0.02em;
}

h2 {
  margin: 2rem 0 0.6rem;
  font-size: 1.35rem;
}

h3 {
  margin: 0 0 0.2rem;
  font-size: 1.05rem;
}

p,
li {
  margin: 0 0 0.9rem;
}

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

a:hover {
  text-decoration-thickness: 2px;
}

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

.skip {
  position: absolute;
  left: 12px;
  top: 0;
  transform: translateY(-120%);
  background: var(--accent);
  color: var(--on-accent);
  padding: 10px 14px;
  border-radius: 8px;
  z-index: 2;
}

.skip:focus {
  transform: translateY(12px);
}

.wrap {
  width: min(var(--measure), calc(100% - 2.5rem));
  margin-inline: auto;
}

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

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem 1rem;
  padding: 0.4rem 0;
}

.identity {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.15rem 0.55rem;
  min-height: 44px;
}

.brand {
  font-size: 1.2rem;
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.by {
  color: var(--muted);
  font-size: 0.95rem;
}

nav[aria-label="Primary"],
nav[aria-label="Footer"] {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  max-width: 100%;
}

nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.4rem 0.7rem;
  color: var(--ink);
  text-decoration: none;
  border-radius: 8px;
}

nav a[aria-current="page"] {
  box-shadow: inset 0 -2px 0 var(--rule);
}

main {
  flex: 1;
  padding: 2.25rem 0 3rem;
}

.lede,
.notice {
  color: var(--muted);
}

.lede {
  font-size: 1.15rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1rem 0 2rem;
}

.company {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0.6rem 0 0;
}

article h2 {
  margin-top: 1.8rem;
}

details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.35rem 1rem;
  margin: 0 0 0.75rem;
}

summary {
  cursor: pointer;
  min-height: 44px;
  display: flex;
  align-items: center;
}

details p:last-child {
  margin-bottom: 0.7rem;
}

@media (max-width: 52rem) {
  h1 {
    font-size: 1.85rem;
  }

  .wrap {
    width: min(var(--measure), calc(100% - 2rem));
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  nav[aria-label="Primary"] {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto;
  }
}