:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #5c5c5c;
  --border: #e5e5e5;
  --accent: #e0567a;
  --accent-fg: #ffffff;
  --max: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #ededed;
    --muted: #a0a0a0;
    --border: #2a2a2a;
    --accent: #e0567a;
    --accent-fg: #ffffff;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  line-height: 1.65;
  font-size: 16px;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px 20px 80px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.lang-toggle button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 13px;
  padding: 6px 14px;
  cursor: pointer;
}

.lang-toggle button[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-fg);
}

h1 {
  font-size: 28px;
  margin: 24px 0 4px;
}

.updated {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 32px;
}

h2 {
  font-size: 18px;
  margin: 32px 0 8px;
}

p {
  margin: 0 0 14px;
  color: var(--fg);
}

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

footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

footer a {
  color: var(--muted);
}

[data-lang] {
  display: none;
}

html[lang="en"] [data-lang="en"],
html[lang="ko"] [data-lang="ko"] {
  display: revert;
}