:root {
  --bg: #ffffff;
  --fg: #1c1c1e;
  --muted: #6e6e73;
  --line: #e5e5ea;
  --accent: #ea5532;
  --card: #f7f7f8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1c1e;
    --fg: #f2f2f7;
    --muted: #a1a1a6;
    --line: #38383a;
    --accent: #ff7a5c;
    --card: #2c2c2e;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", Meiryo, "Noto Sans JP", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.8;
  font-size: 16px;
}
html[lang="en"] body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.65;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
header.site { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 16px; border-bottom: 1px solid var(--line); margin-bottom: 32px; }
header.site a.brand { color: var(--fg); text-decoration: none; font-weight: 700; letter-spacing: 0.02em; }
header.site .brand span { color: var(--accent); }
nav.lang a { color: var(--muted); font-size: 14px; text-decoration: none; }
nav.lang a:hover { color: var(--accent); }
h1 { font-size: 26px; line-height: 1.4; margin: 0 0 8px; }
h2 { font-size: 18px; margin: 36px 0 8px; padding-top: 4px; }
p, li { margin: 0 0 10px; }
ul, ol { padding-left: 1.4em; margin: 0 0 12px; }
a { color: var(--accent); }
.meta { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.card { background: var(--card); border-radius: 14px; padding: 18px 20px; margin: 16px 0; }
.card h2 { margin-top: 0; }
.apps { list-style: none; padding: 0; }
.apps li { background: var(--card); border-radius: 14px; padding: 18px 20px; margin-bottom: 12px; }
.apps .name { font-weight: 700; font-size: 18px; }
.links a { margin-right: 16px; white-space: nowrap; }
footer.site { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
footer.site a { color: var(--muted); }