* { box-sizing: border-box; }
body {
  font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  color: #222;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
  background: #fff;
}
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid #eee;
  flex-wrap: wrap;
  gap: 8px;
}
.site-title { font-size: 20px; font-weight: 700; color: #111; text-decoration: none; }
.site-header nav a { margin-left: 16px; color: #555; text-decoration: none; }
.site-header nav a:hover { color: #111; }
.tagline { color: #666; margin: 32px 0 8px; }
.post-list { list-style: none; padding: 0; }
.post-list li { padding: 12px 0; border-bottom: 1px solid #f0f0f0; }
.post-list .date { color: #999; font-size: 14px; margin-right: 12px; }
.post-list a { color: #111; text-decoration: none; font-size: 18px; }
.post-list a:hover { text-decoration: underline; }
article h1 { font-size: 28px; margin: 32px 0 8px; }
article h2 { font-size: 20px; margin: 28px 0 8px; }
article .date { color: #999; font-size: 14px; }
article p, article li { margin: 12px 0; }
code {
  background: #f4f4f4;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
}
a { color: #0b5fff; }
footer { margin: 48px 0 32px; color: #999; font-size: 14px; border-top: 1px solid #eee; padding-top: 16px; }
footer a { color: #999; }
a:focus-visible { outline: 2px solid #0b5fff; outline-offset: 2px; }