* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: #fbfaf8;
  color: #23262b;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #2f6f6a, #6b8f8b 55%, #d5ddda);
}

::selection { background: #d8e6e3; }

a { color: #2f6f6a; text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 64px 24px 88px;
}

.site-head {
  padding-bottom: 26px;
  margin-bottom: 34px;
  border-bottom: 1px solid #e6e3de;
}

.site-head h1 {
  margin: 0 0 8px;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-head h1 a { color: inherit; }
.site-head h1 a:hover { text-decoration: none; }

.tagline {
  margin: 0;
  font-size: 14px;
  color: #6f757e;
  letter-spacing: 0.02em;
}

.intro {
  margin: 0 0 44px;
  font-size: 15px;
  color: #3f444c;
}

section { margin-bottom: 44px; }

h2 {
  margin: 0 0 20px;
  padding-bottom: 9px;
  font-size: 13px;
  font-weight: 600;
  color: #8a8f98;
  letter-spacing: 0.12em;
  border-bottom: 1px solid #ece9e4;
}

.entry { margin-bottom: 26px; }
.entry:last-child { margin-bottom: 0; }

.meta {
  margin-bottom: 5px;
  font-size: 12.5px;
  color: #9a9fa7;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.entry h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 600;
  color: #1d2025;
}

.entry h3 a { color: #1d2025; }
.entry h3 a:hover { color: #2f6f6a; text-decoration: none; }

.entry p {
  margin: 0;
  font-size: 14.5px;
  color: #565c65;
}

section > p {
  margin: 0;
  font-size: 15px;
  color: #3f444c;
}

footer {
  margin-top: 60px;
  padding-top: 22px;
  border-top: 1px solid #e6e3de;
  font-size: 12.5px;
  color: #9a9fa7;
}

footer p { margin: 0 0 6px; }
footer p:last-child { margin-bottom: 0; }

/* ---- article pages ---- */

.article-nav {
  margin-bottom: 34px;
  font-size: 13.5px;
}

.article-nav a { color: #6f757e; }
.article-nav a:hover { color: #2f6f6a; text-decoration: none; }

.article-head {
  padding-bottom: 22px;
  margin-bottom: 30px;
  border-bottom: 1px solid #e6e3de;
}

.article-head h1 {
  margin: 8px 0 0;
  font-size: 25px;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.01em;
  color: #1d2025;
}

.article-body {
  font-size: 15px;
  color: #3f444c;
}

.article-body p { margin: 0 0 18px; }

.article-body h2 {
  margin: 34px 0 14px;
  padding-bottom: 0;
  border-bottom: none;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: #1d2025;
}

.article-body ul,
.article-body ol {
  margin: 0 0 18px;
  padding-left: 22px;
}

.article-body li { margin-bottom: 8px; }

.article-body code {
  padding: 2px 5px;
  border-radius: 4px;
  background: #f0eeea;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
}

.article-body pre {
  margin: 0 0 18px;
  padding: 14px 16px;
  overflow-x: auto;
  border-radius: 6px;
  background: #f0eeea;
}

.article-body pre code {
  padding: 0;
  background: none;
  font-size: 12.5px;
  line-height: 1.7;
}

.article-body blockquote {
  margin: 0 0 18px;
  padding: 2px 0 2px 16px;
  border-left: 2px solid #cfd8d5;
  color: #6f757e;
}

@media (max-width: 520px) {
  .wrap { padding: 44px 20px 72px; }
  .site-head h1 { font-size: 23px; }
  .entry h3 { font-size: 16px; }
  .article-head h1 { font-size: 21px; }
}