:root {
  --bg: #f6f7fb; --card: #ffffff; --ink: #1b2440; --muted: #5b6480; --line: #e3e6ef;
  --accent: #3b52a0; --accent-ink: #ffffff; --lime: #a3cf62;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1424; --card: #171e33; --ink: #eef1f8; --muted: #a3abc4; --line: #2a3350; --accent: #8fa3e6; --accent-ink: #0f1424; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; background: var(--card); padding: 8px 12px; border-radius: 8px; }
.site-header { border-bottom: 1px solid var(--line); background: var(--card); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--ink); text-decoration: none; }
.brand img { border-radius: 9px; }
.site-nav { display: flex; gap: 18px; }
.site-nav a { color: var(--muted); text-decoration: none; font-weight: 600; }
.site-nav a[aria-current="page"], .site-nav a:hover { color: var(--ink); }
.hero { padding: 48px 0 24px; text-align: center; }
.hero img { border-radius: 26%; box-shadow: 0 10px 30px rgba(20, 30, 70, .18); }
.hero h1 { font-size: 34px; line-height: 1.2; margin: 20px 0 8px; }
.hero p { color: var(--muted); margin: 0 auto 20px; max-width: 560px; }
.button { display: inline-block; background: var(--accent); color: var(--accent-ink); padding: 12px 22px; border-radius: 12px; font-weight: 700; text-decoration: none; }
section { padding: 8px 0 24px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px 24px; margin: 16px 0; }
.prose h1 { font-size: 30px; margin: 32px 0 4px; }
.prose h2 { font-size: 21px; margin: 28px 0 6px; }
.prose h3 { font-size: 18px; margin: 20px 0 4px; }
.updated { color: var(--muted); margin-top: 0; }
ol, ul { padding-left: 22px; }
li { margin: 4px 0; }
.site-footer { border-top: 1px solid var(--line); margin-top: 32px; padding: 20px 0 40px; color: var(--muted); font-size: 15px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.site-footer nav { display: flex; gap: 16px; }
.site-footer a { color: var(--muted); }