:root {
  color-scheme: dark light;
  --bg: #0d0d10;
  --surface: #16171b;
  --text: #f3f3f5;
  --text-secondary: #b4b4b8;
  --accent: #d0a577;
  --rule: rgba(255, 255, 255, 0.08);
  --max-width: 720px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafafa;
    --surface: #ffffff;
    --text: #111114;
    --text-secondary: #5a5a60;
    --accent: #c2864a;
    --rule: rgba(0, 0, 0, 0.08);
  }
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 16px;
  margin-bottom: 24px;
}

.brand {
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 8px;
}

h1 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.updated {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0;
}

article {
  font-size: 16px;
  line-height: 1.65;
}

article h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 32px 0 12px;
  letter-spacing: -0.005em;
}

article h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 24px 0 8px;
  color: var(--text);
}

article p {
  margin: 0 0 14px;
}

article ul, article ol {
  margin: 0 0 14px;
  padding-left: 22px;
}

article li {
  margin-bottom: 6px;
}

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

article a:hover {
  text-decoration: none;
}

article strong {
  color: var(--text);
  font-weight: 600;
}

footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  color: var(--text-secondary);
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

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

.lang-switch {
  display: inline-flex;
  gap: 8px;
  font-size: 13px;
  margin-bottom: 16px;
}

.lang-switch a {
  padding: 4px 10px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  color: var(--text-secondary);
  text-decoration: none;
}

.lang-switch a.active,
.lang-switch a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

@media (max-width: 480px) {
  main { padding: 20px 16px 48px; }
  h1 { font-size: 24px; }
  article { font-size: 15px; }
  article h2 { font-size: 18px; }
}