:root {
  --bg: #ffffff; --fg: #1a1a1a; --muted: #6b7280; --accent: #2563eb;
  --border: #e5e7eb; --code-bg: #f3f4f6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a; --fg: #e6e6e6; --muted: #9aa0a6; --accent: #7aa2ff;
    --border: #2a2e35; --code-bg: #1e2127;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.container { width: 100%; max-width: 720px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.site-header {
  display: flex; align-items: baseline; justify-content: space-between;
  flex-wrap: wrap; gap: 12px; padding: 28px 20px 20px; border-bottom: 1px solid var(--border);
}
.site-title { font-size: 1.35rem; font-weight: 700; color: var(--fg); }
.site-header nav a { margin-left: 18px; color: var(--muted); font-size: .95rem; }
main.container { padding-top: 32px; padding-bottom: 40px; }
.intro { color: var(--muted); font-size: 1.05rem; margin: 0 0 28px; }
.post-list { list-style: none; padding: 0; margin: 0; }
.post-list li { display: flex; gap: 16px; align-items: baseline; padding: 8px 0; }
.post-date { color: var(--muted); font-variant-numeric: tabular-nums; font-size: .9rem; min-width: 92px; flex-shrink: 0; }
.post-meta { color: var(--muted); font-size: .9rem; margin-top: -8px; }
.post h1 { margin-bottom: 4px; line-height: 1.2; }
article.post { line-height: 1.7; }
article.post img { max-width: 100%; height: auto; }
pre { background: var(--code-bg); padding: 14px 16px; border-radius: 8px; overflow-x: auto; }
code { background: var(--code-bg); padding: .15em .35em; border-radius: 4px; font-size: .9em; }
pre code { background: none; padding: 0; }
blockquote { border-left: 3px solid var(--border); margin: 0; padding-left: 16px; color: var(--muted); }
.site-footer { border-top: 1px solid var(--border); padding: 24px 20px 40px; color: var(--muted); font-size: .85rem; }