:root { --bg: #fdfaf3; --fg: #23202b; --muted: #6b6676; --brand: #6c4bd8; --card: #fff; --line: #e7e1d4; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #17151c; --fg: #ece9f2; --muted: #a39fae; --brand: #a993ff; --card: #211e28; --line: #36313f; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif; }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { display: flex; align-items: center; justify-content: space-between; padding-top: 20px; padding-bottom: 8px; }
.logo { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-size: 20px; color: var(--fg); text-decoration: none; }
.logo img { border-radius: 7px; }
.logo .r { margin-left: -8px; }
.app-icon { display: block; margin-top: 32px; border-radius: 22px; }
.r { color: #f0a51e; }
nav a { color: var(--muted); margin-left: 12px; font-size: 14px; }
h1 { font-size: 28px; line-height: 1.25; margin: 24px 0 4px; }
h2 { font-size: 19px; margin: 32px 0 8px; }
a { color: var(--brand); }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 20px; }
.summary { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; }
.summary ul { margin: 6px 0 0; padding-left: 20px; }
li { margin: 4px 0; }
footer { color: var(--muted); font-size: 14px; padding-top: 32px; padding-bottom: 40px; }