:root { --bg: #ffffff; --fg: #17202b; --muted: #5e6875; --line: #e2e6ea; --brand: #0e6e5a; --link: #0b5fa5; color-scheme: light dark; }
@media (prefers-color-scheme: dark) { :root { --bg: #151a20; --fg: #edf0f3; --muted: #a3acb8; --line: #2e3540; --brand: #4fc3a5; --link: #8ab4ff; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif; padding: 0 20px; }
main { max-width: 680px; margin: 0 auto; padding: 48px 0 72px; }
header { display: flex; align-items: center; gap: 14px; padding-bottom: 20px; border-bottom: 1px solid var(--line); margin-bottom: 28px; }
header img { width: 44px; height: 44px; }
h1 { font-size: 28px; line-height: 1.2; margin: 0; }
.meta { color: var(--muted); font-size: 14px; margin: 2px 0 0; }
.summary { font-size: 19px; line-height: 1.5; border-left: 4px solid var(--brand); padding-left: 14px; }
h2 { font-size: 18px; margin: 32px 0 8px; }
p, ul { margin: 0 0 10px; max-width: 65ch; }
ul { padding-left: 22px; }
li { margin: 4px 0; }
a { color: var(--link); }
code { font-size: 14px; background: color-mix(in srgb, var(--line) 70%, transparent); padding: 1px 5px; border-radius: 4px; }
.lang { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }