/* LIFENOA 専用サイトの見た目。外部の読み込み（フォント・解析など）はしない */
:root {
  --bg: #ffffff; --surface: #f6f7f9; --text: #1f2933; --muted: #5b6673;
  --line: #dde2e8; --accent: #1f5f8b; --accent-text: #ffffff;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #14181d; --surface: #1d232a; --text: #e6eaee; --muted: #a3adb8; --line: #2e3640; --accent: #7cb7e0; --accent-text: #0e1418; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", Meiryo, sans-serif;
  font-size: 16px; line-height: 1.8; overflow-wrap: anywhere;
}
a { color: var(--accent); }
.wrap { max-width: 46rem; margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 8px; top: 8px; background: var(--bg); padding: 8px 12px; z-index: 10; }
header { border-bottom: 1px solid var(--line); }
.head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; padding-top: 12px; padding-bottom: 12px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; letter-spacing: .06em; color: var(--text); text-decoration: none; }
.brand img { border-radius: 8px; box-shadow: 0 0 0 1px var(--line); }
nav { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 14px; }
nav a { color: var(--muted); text-decoration: none; }
nav a[aria-current="page"] { color: var(--text); font-weight: 700; }
main { padding-top: 32px; padding-bottom: 48px; }
h1 { font-size: 1.6rem; line-height: 1.4; margin: 0 0 12px; }
h2 { font-size: 1.15rem; line-height: 1.5; margin: 32px 0 8px; }
.lead, .note, .sign { color: var(--muted); }
.note { font-size: 14px; }
.sign { margin-top: 24px; }
ul { padding-left: 1.5em; }
details { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin: 10px 0; }
summary { cursor: pointer; font-weight: 700; }
details p { margin: 8px 0 0; }
.button { display: inline-block; background: var(--accent); color: var(--accent-text); padding: 10px 20px; border-radius: 8px; text-decoration: none; font-weight: 700; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; padding: 16px 0 32px; }
footer p { margin: 4px 0; }