:root {
  color-scheme: light dark;
  --bg: #faf7f2;
  --surface: #f1ebe0;
  --text: #1f2a24;
  --muted: #4d5a52;
  --accent: #4a7c59;
  --accent-strong: #3b6548;
  --orange: #e07b39;
  --border: #ddd3c3;
  --mark-bg: #ffd9b8;
  --mark-text: #4a1f00;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121814;
    --surface: #1c2520;
    --text: #e9ece6;
    --muted: #b6c0b8;
    --accent: #8cc49d;
    --accent-strong: #a8d6b5;
    --orange: #f0a170;
    --border: #2f3b34;
    --mark-bg: #f0a170;
    --mark-text: #1a0e05;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  overflow-wrap: break-word;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 16px;
  top: 8px;
  background: var(--surface);
  padding: 0.5rem 0.75rem;
  z-index: 10;
}

.site-header {
  border-bottom: 3px solid var(--accent);
  background: var(--surface);
}

.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

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

.brand::after {
  content: "";
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  margin-left: 0.3rem;
  border-radius: 50%;
  background: var(--orange);
  vertical-align: middle;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

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

a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

nav a[aria-current="page"] {
  font-weight: 700;
  text-decoration: none;
}

main {
  padding-top: 1.5rem;
  padding-bottom: 2.5rem;
}

h1 {
  font-size: 1.75rem;
  line-height: 1.25;
  margin: 0.5rem 0 0.75rem;
}

h2 {
  font-size: 1.25rem;
  line-height: 1.3;
  margin: 2rem 0 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

h3 {
  font-size: 1.05rem;
  margin: 1.25rem 0 0.25rem;
}

.meta {
  color: var(--muted);
}

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
}

th {
  background: var(--surface);
}

code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.9em;
  background: var(--surface);
  padding: 0.05em 0.3em;
  border-radius: 3px;
}

mark {
  background: var(--mark-bg);
  color: var(--mark-text);
  font-weight: 700;
  padding: 0.05em 0.3em;
}

.lang-switch {
  font-size: 0.95rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
  padding: 1rem 0 2rem;
}

.site-footer ul {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
}

.cards {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  display: grid;
  gap: 0.75rem;
}

.cards a {
  display: block;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 6px;
  background: var(--surface);
  text-decoration: none;
  font-weight: 600;
}

.cards a:hover {
  border-left-color: var(--orange);
}