:root {
  --fg: #1f2328;
  --muted: #6a737d;
  --line: #e3e6ea;
  --bg: #ffffff;
  --accent: #2f6f4f;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 18px 24px; border-bottom: 1px solid var(--line);
  max-width: 780px; margin: 0 auto;
}
.brand { font-weight: 600; color: var(--fg); text-decoration: none; letter-spacing: .5px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 14px; }
nav a:hover { color: var(--accent); }
main { max-width: 780px; margin: 0 auto; padding: 32px 24px 64px; }
h1 { font-size: 26px; margin: 0 0 12px; font-weight: 600; }
h2 { font-size: 18px; margin: 36px 0 12px; font-weight: 600; }
h3 { font-size: 15px; margin: 24px 0 8px; font-weight: 600; }
p { margin: 10px 0; }
.lead { color: var(--muted); }
ul.list { list-style: none; padding: 0; margin: 0; }
ul.list li {
  display: flex; justify-content: space-between; gap: 16px;
  padding: 12px 0; border-bottom: 1px solid var(--line);
}
ul.list a { color: var(--fg); text-decoration: none; }
ul.list a:hover { color: var(--accent); }
time { color: var(--muted); font-size: 13px; white-space: nowrap; }
code {
  background: #f4f6f8; border: 1px solid var(--line); border-radius: 3px;
  padding: 1px 5px; font-size: 13px;
}
pre {
  background: #f4f6f8; border: 1px solid var(--line); border-radius: 4px;
  padding: 14px 16px; overflow-x: auto; font-size: 13px; line-height: 1.6;
}
pre code { background: none; border: 0; padding: 0; }
footer {
  max-width: 780px; margin: 0 auto; padding: 24px; border-top: 1px solid var(--line);
  color: var(--muted); font-size: 13px; display: flex; justify-content: space-between;
}
article.entry { margin-top: 8px; }
article.entry h1 { font-size: 22px; }