:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --text: #1a1a1a;
  --text-medium: #55575c;
  --border: #e5e5e5;
  --link: #4f46e5;
  --card-bg: #f7f7f8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14151a;
    --text: #f0f0f1;
    --text-medium: #a8a9ae;
    --border: #2a2b31;
    --link: #9d97f5;
    --card-bg: #1c1d23;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

header.site {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 40px;
}

header.site .logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

nav.top a {
  color: var(--text-medium);
  text-decoration: none;
  font-size: 0.95rem;
  margin-left: 20px;
}

nav.top a:hover {
  color: var(--link);
}

h1 {
  font-size: 1.9rem;
  margin: 0 0 6px;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.25rem;
  margin: 2.2em 0 0.6em;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.05rem;
  margin: 1.6em 0 0.5em;
  letter-spacing: -0.01em;
}

.updated {
  color: var(--text-medium);
  font-size: 0.9rem;
  margin: 0 0 2.5em;
}

p, li {
  color: var(--text);
}

ul, ol {
  padding-left: 1.3em;
}

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

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.2em 0;
  font-size: 0.95rem;
}

th, td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--card-bg);
}

.card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 1.5em 0;
}

.card ul {
  margin: 0.4em 0;
}

.doc-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
}

.doc-list li {
  margin-bottom: 12px;
}

.doc-list a {
  display: block;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}

.doc-list a:hover {
  border-color: var(--link);
}

.doc-list span {
  display: block;
  font-weight: 400;
  color: var(--text-medium);
  font-size: 0.9rem;
  margin-top: 4px;
}

footer.site {
  margin-top: 4em;
  padding-top: 1.5em;
  border-top: 1px solid var(--border);
  color: var(--text-medium);
  font-size: 0.85rem;
}