:root {
  --bg: #0e1014;
  --fg: #dfe3e8;
  --muted: #8b94a3;
  --line: #21262f;
  --accent: #7aa2f7;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.72 -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
        "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header.site, footer.site, main {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

header.site {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-top: 40px;
  padding-bottom: 8px;
}

.mark {
  font-weight: 650;
  font-size: 19px;
  color: var(--fg);
  letter-spacing: -0.01em;
}

header.site nav { display: flex; gap: 18px; font-size: 14px; }
header.site nav a { color: var(--muted); }
header.site nav a:hover { color: var(--fg); text-decoration: none; }

main { padding-top: 40px; padding-bottom: 56px; }

h1 {
  font-size: 30px;
  line-height: 1.28;
  letter-spacing: -0.022em;
  margin: 0 0 18px;
  font-weight: 620;
}

h2 {
  font-size: 18px;
  letter-spacing: -0.01em;
  margin: 40px 0 10px;
  font-weight: 600;
}

p { margin: 0 0 16px; }

.lede { color: #c3cad4; font-size: 17px; }

.muted, .date { color: var(--muted); font-size: 14px; }

ul.posts { list-style: none; padding: 0; margin: 0; }

ul.posts li {
  display: flex;
  gap: 16px;
  align-items: baseline;
  justify-content: space-between;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

ul.posts li:last-child { border-bottom: 1px solid var(--line); }
ul.posts .date { white-space: nowrap; font-variant-numeric: tabular-nums; }

ul.plain { padding-left: 18px; color: #c3cad4; }
ul.plain li { margin: 6px 0; }

code {
  background: #171b22;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
  font: 13.5px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0 24px; }

article h1 { margin-bottom: 6px; }
article .date { margin-bottom: 28px; }

footer.site {
  padding-top: 24px;
  padding-bottom: 56px;
  color: var(--muted);
  font-size: 13.5px;
  border-top: 1px solid var(--line);
}

footer.site a { color: var(--muted); }
footer.site a:hover { color: var(--fg); }
.sep { padding: 0 6px; opacity: 0.5; }

@media (max-width: 560px) {
  header.site { flex-direction: column; gap: 10px; padding-top: 28px; }
  h1 { font-size: 25px; }
  ul.posts li { flex-direction: column; gap: 4px; }
}