:root { --bg: #fbfbfa; --fg: #1d1d1f; --muted: #6e6e73; --line: #e3e3e0; --accent: #1f9d55; --card: #ffffff; }
@media (prefers-color-scheme: dark) { :root { --bg: #141415; --fg: #f2f2f2; --muted: #a1a1a6; --line: #2c2c2e; --accent: #34c46e; --card: #1c1c1e; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif; }
main, header, footer { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header { display: flex; align-items: center; gap: 12px; padding-top: 28px; padding-bottom: 8px; }
header img { width: 40px; height: 40px; border-radius: 9px; }
header a { color: var(--fg); text-decoration: none; font-weight: 650; font-size: 18px; }
nav { margin-left: auto; display: flex; gap: 16px; font-size: 14px; }
nav a { color: var(--muted); font-weight: 500; }
h1 { font-size: 32px; line-height: 1.2; margin: 32px 0 8px; letter-spacing: -0.01em; }
h2 { font-size: 19px; margin: 32px 0 6px; }
p, li { color: var(--fg); }
.lead { font-size: 19px; color: var(--muted); margin-top: 0; }
.muted { color: var(--muted); font-size: 14px; }
a { color: var(--accent); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; margin: 16px 0; }
ul { padding-left: 20px; }
footer { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 16px; padding-bottom: 32px; font-size: 13px; color: var(--muted); display: flex; gap: 16px; flex-wrap: wrap; }
footer a { color: var(--muted); }