* { box-sizing: border-box; }
body {
  margin: 0 auto;
  max-width: 720px;
  padding: 24px 20px 48px;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #22252a;
  background: #fdfdfb;
  line-height: 1.75;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid #e5e2da;
  padding-bottom: 14px;
  margin-bottom: 32px;
}
.site-title { font-size: 22px; font-weight: 700; letter-spacing: 2px; }
nav a { margin-left: 18px; color: #5a6068; text-decoration: none; font-size: 15px; }
nav a:hover { color: #b3543f; }
h1 { font-size: 30px; line-height: 1.4; margin: 0 0 14px; }
h2 { font-size: 20px; margin: 34px 0 10px; }
.lede { color: #5a6068; font-size: 17px; }
a { color: #b3543f; }
ul { padding-left: 20px; }
li { margin: 6px 0; }
footer {
  margin-top: 56px;
  border-top: 1px solid #e5e2da;
  padding-top: 14px;
  color: #8a8f96;
  font-size: 14px;
}
.meta { color: #8a8f96; font-size: 14px; }