:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1c1c1e;
  --muted: #6b6b70;
  --accent: #3b7dd8;
  --border: #e5e5ea;
  --card-bg: #f7f7f9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131316;
    --fg: #eceded;
    --muted: #9a9aa0;
    --accent: #6fa8ff;
    --border: #2c2c30;
    --card-bg: #1c1c1f;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Segoe UI", Roboto, sans-serif;
  line-height: 1.8;
}

.page {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 20px 96px;
}

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

header.site-header .logo {
  font-size: 1.4rem;
}

header.site-header a {
  color: var(--fg);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
}

h1 {
  font-size: 1.6rem;
  margin-bottom: 8px;
}

h2 {
  font-size: 1.15rem;
  margin-top: 2.2em;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

h3 {
  font-size: 1rem;
  margin-top: 1.6em;
}

p, li {
  color: var(--fg);
  font-size: 0.95rem;
}

ul, ol {
  padding-left: 1.4em;
}

.meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 2em;
}

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

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

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

.card-list span {
  display: block;
  margin-top: 4px;
  font-weight: 400;
  font-size: 0.85rem;
  color: var(--muted);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.9rem;
}

th, td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

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

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

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

nav.crumb {
  margin-bottom: 24px;
  font-size: 0.85rem;
}

nav.crumb a {
  color: var(--muted);
}