:root { color-scheme: light; }
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  color: #1a1a1a;
  background: #fafafa;
}
.site-header {
  display: flex; align-items: baseline; gap: 12px;
  padding: 18px 24px; border-bottom: 1px solid #e5e5e5; background: #fff;
}
.brand { font-weight: 700; font-size: 1.15rem; color: #111; text-decoration: none; }
.tagline { color: #666; font-size: 0.9rem; }
.container { max-width: 720px; margin: 0 auto; padding: 32px 24px 64px; }
article h1 { font-size: 2rem; line-height: 1.25; margin: 0 0 8px; }
.meta { color: #777; font-size: 0.85rem; }
article h2 { margin-top: 2em; }
article table { border-collapse: collapse; width: 100%; margin: 1em 0; }
article th, article td { border: 1px solid #ddd; padding: 8px 10px; text-align: left; }
article th { background: #f2f2f2; }
article code { background: #f0f0f0; padding: 2px 5px; border-radius: 4px; }
article pre { background: #f0f0f0; padding: 12px; border-radius: 6px; overflow-x: auto; }
.lead { font-size: 1.1rem; color: #444; }
.article-list { list-style: none; padding: 0; }
.article-list li { padding: 12px 0; border-bottom: 1px solid #eee; }
.article-list a { font-size: 1.05rem; color: #0b57d0; text-decoration: none; }
.article-list .meta { display: block; }
.site-footer { border-top: 1px solid #e5e5e5; padding: 24px; color: #888; font-size: 0.85rem; background: #fff; }
.nav { margin-left: auto; }
.nav a { color: #0b57d0; text-decoration: none; font-size: 0.9rem; font-weight: 600; }
.nav a:hover { text-decoration: underline; }