:root {
  --bg: #fafafa;
  --text: #1a1a1a;
  --text-secondary: #555;
  --accent: #0a7d33;
  --border: #e2e2e2;
  --max-width: 720px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

h1 {
  font-size: 1.6rem;
  line-height: 1.4;
  margin: 0 0 8px;
}

h2 {
  font-size: 1.2rem;
  margin: 40px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

h3 {
  font-size: 1rem;
  margin: 24px 0 8px;
}

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

ul {
  padding-left: 1.4em;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 12px 0;
}

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

th {
  background: #f0f0f0;
  white-space: nowrap;
}

.meta {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 32px;
}

.lang-divider {
  margin: 64px 0 48px;
  border: none;
  border-top: 2px solid var(--border);
}

.site-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 0.9rem;
}

.site-header a {
  text-decoration: none;
  color: var(--text-secondary);
}

footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 48px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}