:root {
  --bg: #fbfbfa;
  --fg: #23252a;
  --muted: #6b7280;
  --rule: #e5e5e1;
  --link: #1f5fbf;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #dfe1e5;
    --muted: #9aa0a6;
    --rule: #2a2e34;
    --link: #7aa7e8;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.75 -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
        "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  padding: 0 20px;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 0 18px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
  flex-wrap: wrap;
  gap: 8px;
}
.brand {
  font-weight: 600;
  font-size: 17px;
  letter-spacing: .04em;
  color: var(--fg);
}
.site-header nav a {
  margin-left: 18px;
  font-size: 14px;
  color: var(--muted);
}
.site-header nav a:hover { color: var(--fg); }

main { max-width: 720px; margin: 0 auto; padding: 40px 0 64px; }

.hero h1 {
  font-size: 26px;
  line-height: 1.5;
  font-weight: 600;
  margin: 0 0 18px;
  letter-spacing: -.01em;
}
.lede { color: var(--muted); margin: 0 0 44px; }

h2 { font-size: 15px; font-weight: 600; color: var(--muted);
     letter-spacing: .08em; text-transform: uppercase; margin: 0 0 16px; }

.post-list { list-style: none; padding: 0; margin: 0; }
.post-list li { padding: 18px 0; border-top: 1px solid var(--rule); }
.post-list li:first-child { border-top: none; padding-top: 0; }
.post-list time {
  display: block;
  font-size: 13px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  margin-bottom: 4px;
}
.post-list a { font-size: 17px; font-weight: 500; }
.post-list p { margin: 6px 0 0; color: var(--muted); font-size: 14.5px; }

article h1 { font-size: 24px; line-height: 1.45; margin: 0 0 6px; font-weight: 600; }
article .meta { color: var(--muted); font-size: 13.5px; margin-bottom: 28px; }
article h2 { text-transform: none; letter-spacing: 0; font-size: 17px; color: var(--fg); margin: 34px 0 10px; }
article p { margin: 0 0 16px; }
article code {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 13.5px;
  background: rgba(127,127,127,.14);
  padding: 1px 5px;
  border-radius: 4px;
}
article pre {
  background: rgba(127,127,127,.12);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.6;
}
article pre code { background: none; padding: 0; }
article blockquote {
  margin: 0 0 16px;
  padding-left: 14px;
  border-left: 3px solid var(--rule);
  color: var(--muted);
}

.site-footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 22px 0 40px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--muted);
}

ul.plain { padding-left: 20px; }
ul.plain li { margin-bottom: 6px; }