:root {
  --bg: #f4f4f2;
  --fg: #1a1a1a;
  --muted: #6b6b64;
  --card: #ffffff;
  --panel: #e6e6e0;
  --line: #d9d9d2;
  --max-width: 720px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Segoe UI", Roboto, sans-serif;
  line-height: 1.75;
  padding: 2.5rem 1.25rem 5rem;
}
main { max-width: var(--max-width); margin: 0 auto; }
.wordmark {
  display: inline-block; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.06em;
  color: #fff; background: var(--fg); border-radius: 999px; padding: 0.35rem 0.85rem; text-decoration: none;
}
h1 { font-size: 1.7rem; line-height: 1.35; margin: 1.25rem 0 0.5rem; }
h2 { font-size: 1.05rem; margin: 2.2rem 0 0.5rem; }
p, li { font-size: 0.94rem; }
ul { padding-left: 1.2rem; }
a { color: var(--fg); }
.lead { color: var(--muted); }
.draft {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 0.9rem 1.1rem; margin: 1.5rem 0; font-size: 0.86rem;
}
.note { background: var(--panel); border-radius: 14px; padding: 1rem 1.1rem; margin: 1.25rem 0; }
.lang-switch { margin: 1rem 0 0; font-size: 0.86rem; }
.lang-switch a { margin-right: 1rem; }
table { border-collapse: collapse; width: 100%; font-size: 0.88rem; margin: 0.75rem 0; background: var(--card); border-radius: 12px; overflow: hidden; }
th, td { border-bottom: 1px solid var(--line); padding: 0.6rem 0.75rem; text-align: left; vertical-align: top; }
tr:last-child td { border-bottom: none; }
th { background: var(--panel); font-weight: 600; }
footer { margin-top: 3rem; color: var(--muted); font-size: 0.82rem; }
section[lang] + section[lang] { margin-top: 3.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }