:root {
  --black: #111111;
  --white: #FFFFFF;
  --bg-subtle: #F6F6F6;
  --border: #E4E4E4;
  --text-main: #111111;
  --text-sub: #555555;
  --text-muted: #9A9A9A;
  --font: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--text-main);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 640px; margin: 0 auto; padding: 40px 20px 60px 20px; }
header.site {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
header.site .wrap { padding: 0 20px; display: flex; align-items: center; }
header.site img { height: 26px; }
h1 { font-size: 1.5rem; font-weight: 900; margin-bottom: 24px; letter-spacing: -0.5px; }
h2 { font-size: 0.95rem; font-weight: 700; margin-top: 24px; margin-bottom: 8px; }
p, li { font-size: 0.85rem; color: var(--text-sub); white-space: pre-line; }
section + section { margin-top: 4px; }
.back { display: inline-block; margin-top: 32px; font-size: 0.8rem; color: var(--text-muted); text-decoration: none; }
.placeholder { color: #b45309; background: #fffbeb; padding: 2px 6px; border-radius: 4px; }