:root { color-scheme: light dark; --fg: #1c1c1e; --bg: #fbf7ef; --muted: #6e6e73; --accent: #2e9d6f; }
@media (prefers-color-scheme: dark) { :root { --fg: #f2f2f7; --bg: #111; --muted: #9a9aa0; --accent: #5ac898; } }
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif; color: var(--fg); background: var(--bg); line-height: 1.8; }
main { max-width: 680px; margin: 0 auto; padding: 48px 24px 80px; }
h1 { font-size: 1.6rem; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 32px 0 8px; }
p, li { font-size: 1rem; }
a { color: var(--accent); }
.muted { color: var(--muted); font-size: 0.9rem; }
nav { font-size: 0.9rem; margin-bottom: 24px; }
nav a { margin-right: 16px; }
.icon { width: 96px; height: 96px; border-radius: 22px; display: block; margin-bottom: 16px; }