:root { color-scheme: light; --ink: #1a1a1a; --muted: #5c5f62; --blue: #0a3e7a; --line: #e3e3e3; --bg: #ffffff; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
header { border-bottom: 1px solid var(--line); }
.wrap { max-width: 760px; margin: 0 auto; padding: 20px 16px; }
header .wrap { display: flex; align-items: center; gap: 12px; }
header img { width: 36px; height: 36px; border-radius: 9px; }
header strong { font-size: 17px; }
header a { color: var(--muted); text-decoration: none; margin-left: auto; }
h1 { font-size: 28px; line-height: 1.25; margin: 24px 0 8px; }
h2 { font-size: 19px; margin: 32px 0 8px; }
p, li { color: var(--ink); }
.muted { color: var(--muted); }
a { color: var(--blue); }
dl { margin: 0; } dt { font-weight: 600; margin-top: 14px; } dd { margin: 2px 0 0; color: var(--muted); }
footer { border-top: 1px solid var(--line); margin-top: 48px; }
footer .wrap { color: var(--muted); font-size: 14px; }