:root {
  --bg: #f7faf8; --surface: #ffffff; --text: #16201b; --muted: #5a6b63;
  --border: #dbe7e0; --accent: #047857; --accent-soft: #d1fae5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #060b09; --surface: #0f1a13; --text: #eef3f0; --muted: #95aaa0;
    --border: rgba(52,211,153,0.16); --accent: #34d399; --accent-soft: rgba(52,211,153,0.12);
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", sans-serif;
  line-height: 1.85; font-size: 16px; -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header.site { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
header.site a { color: var(--text); text-decoration: none; display: flex; align-items: center; gap: 10px; }
header.site img { width: 32px; height: 32px; border-radius: 8px; }
header.site span { font-weight: 700; letter-spacing: 0.08em; }
main { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 28px 22px; }
h1 { font-size: 1.6rem; line-height: 1.4; margin: 0 0 4px; }
.updated { color: var(--muted); font-size: 0.9rem; margin: 0 0 24px; }
h2 { font-size: 1.15rem; margin: 2.2em 0 0.6em; padding-left: 10px; border-left: 3px solid var(--accent); }
h3 { font-size: 1rem; margin: 1.6em 0 0.4em; }
p, li { overflow-wrap: anywhere; }
ul, ol { padding-left: 1.4em; }
li + li { margin-top: 0.3em; }
a { color: var(--accent); }
nav.pages { display: grid; gap: 12px; margin-top: 8px; }
nav.pages a {
  display: block; padding: 16px 18px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--accent-soft); color: var(--text); text-decoration: none; font-weight: 600;
}
nav.pages a small { display: block; color: var(--muted); font-weight: 400; }
footer { color: var(--muted); font-size: 0.85rem; margin-top: 24px; text-align: center; }
footer a { margin: 0 8px; }