:root {
  --text: #111;
  --muted: #666;
  --bg: #fff;
  --link: #0b67ff;
  --border: #e5e7eb;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; }
.container { max-width: 860px; margin: 0 auto; padding: 16px; }
header { margin-bottom: 16px; }
header h1 { margin: 0 0 4px; font-size: 28px; }
header nav a { margin-right: 12px; color: var(--link); text-decoration: none; }
header nav a:hover { text-decoration: underline; }
#post-meta { color: var(--muted); margin: 4px 0 0; }
article { line-height: 1.75; }
article h1, article h2, article h3 { margin-top: 1.6em; }
article img { max-width: 100%; height: auto; }
pre { background: #0b1221; color: #e2e8f0; padding: 12px; overflow: auto; border-radius: 6px; }
code { background: #f5f7fa; padding: 2px 4px; border-radius: 4px; }
blockquote { margin: 0; padding-left: 16px; border-left: 4px solid var(--border); color: var(--muted); }
ul, ol { padding-left: 20px; }
small { color: var(--muted); }