:root { color-scheme: light dark; --bg: #f7f8fa; --fg: #1a1d21; --muted: #5c646e; --accent: #0e8f8a; --card: #ffffff; --line: #e2e5e9; }
@media (prefers-color-scheme: dark) { :root { --bg: #0f1216; --fg: #e8ebef; --muted: #9aa3ad; --accent: #3fc4bd; --card: #171b21; --line: #262c34; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", Inter, system-ui, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 48px 20px 80px; }
header.site { display: flex; align-items: baseline; gap: 16px; margin-bottom: 40px; }
header.site a { color: var(--fg); text-decoration: none; font-weight: 700; letter-spacing: -0.01em; }
header.site span { color: var(--muted); font-size: 15px; }
h1 { font-size: 34px; line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 8px; }
h2 { font-size: 22px; margin: 36px 0 8px; }
p.lede { color: var(--muted); font-size: 19px; margin: 0 0 28px; }
a { color: var(--accent); }
.card { display: block; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; margin: 16px 0; color: var(--fg); text-decoration: none; }
.card strong { display: block; font-size: 19px; margin-bottom: 4px; }
.card span { color: var(--muted); }
ul { padding-left: 22px; } li { margin: 6px 0; }
footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.small { color: var(--muted); font-size: 15px; }