:root {
  --bg: #ffffff;
  --fg: #1c1c1e;
  --muted: #6b6b70;
  --border: #e5e5ea;
  --accent: #ff6b9d;
  --accent-fg: #ffffff;
  --code-bg: #f2f2f7;
  --max-width: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --fg: #f2f2f7;
    --muted: #98989f;
    --border: #2c2c2e;
    --code-bg: #1c1c1e;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Helvetica Neue", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  word-break: keep-all;
  overflow-wrap: break-word;
}

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

header.site {
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
  padding-bottom: 16px;
}

header.site .brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
  color: var(--fg);
  text-decoration: none;
}

header.site .brand .dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
}

nav.site {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
}

nav.site a {
  color: var(--muted);
  text-decoration: none;
}

nav.site a:hover,
nav.site a[aria-current="page"] {
  color: var(--fg);
}

.header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.lang-toggle {
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.lang-toggle a {
  color: var(--muted);
  text-decoration: none;
  padding: 2px 6px;
  border-radius: 4px;
}

.lang-toggle a:hover {
  color: var(--fg);
}

.lang-toggle a[aria-current="page"] {
  color: var(--fg);
  font-weight: 600;
}

.lang-toggle .sep {
  color: var(--border);
}

h1 {
  font-size: 28px;
  line-height: 1.3;
  margin: 0 0 8px;
}

h2 {
  font-size: 20px;
  margin: 32px 0 12px;
}

h3 {
  font-size: 17px;
  margin: 24px 0 8px;
}

p {
  margin: 12px 0;
}

ul,
ol {
  padding-left: 22px;
  margin: 12px 0;
}

li + li {
  margin-top: 4px;
}

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

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

.tagline {
  color: var(--muted);
  font-size: 16px;
  margin-bottom: 24px;
}

.card-list {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  display: grid;
  gap: 12px;
}

.card-list a {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--fg);
  text-decoration: none;
  transition: border-color 0.15s ease;
}

.card-list a:hover {
  border-color: var(--accent);
}

.card-list .title {
  font-weight: 600;
  margin-bottom: 2px;
}

.card-list .desc {
  color: var(--muted);
  font-size: 14px;
}

code {
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}

footer.site {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}

.lang-divider {
  margin: 40px 0;
  border-top: 1px dashed var(--border);
}