* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #fff;
  color: #111;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 17px;
  line-height: 1.8;
}

a {
  color: #111;
}

a:hover {
  color: #555;
}

.site-header {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px 16px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
}

.site-title {
  font-size: 20px;
  font-weight: 600;
  text-decoration: none;
}

.site-nav a {
  margin-left: 16px;
  color: #555;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a.active {
  color: #111;
  text-decoration: underline;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 8px 24px 48px;
}

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

.post-item {
  border-bottom: 1px solid #eee;
  padding: 24px 0;
}

.post-item h2 {
  margin: 0 0 4px;
  font-size: 22px;
  line-height: 1.4;
}

.post-item h2 a {
  text-decoration: none;
}

.post-item h2 a:hover {
  text-decoration: underline;
}

.post-meta {
  margin: 0 0 8px;
  color: #555;
  font-size: 14px;
}

.post-summary {
  margin: 0;
  color: #555;
}

.empty,
.not-found {
  color: #555;
}

.post-title {
  font-size: 30px;
  margin: 0 0 4px;
  line-height: 1.4;
}

.post-content {
  margin-top: 16px;
}

.post-content pre {
  background: #f7f7f7;
  border: 1px solid #eee;
  border-radius: 4px;
  padding: 12px 16px;
  overflow-x: auto;
  line-height: 1.6;
}

.post-content code {
  font-family: Consolas, Menlo, Monaco, "Courier New", monospace;
  font-size: 14px;
}

.back-link {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid #eee;
}

.back-link a {
  color: #555;
  text-decoration: none;
}

.back-link a:hover {
  color: #111;
  text-decoration: underline;
}

.about h1 {
  font-size: 30px;
  margin: 0 0 8px;
}

.site-footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
  border-top: 1px solid #eee;
  color: #555;
  font-size: 14px;
}

.site-footer .icp {
  margin: 4px 0 0;
  font-size: 13px;
  color: #999;
}

.site-footer .icp a {
  color: #999;
  text-decoration: none;
}

.site-footer .icp a:hover {
  color: #555;
  text-decoration: underline;
}

.site-footer .icp:empty {
  display: none;
}

.site-footer .icp .police {
  display: block;
  margin-top: 4px;
}

.site-footer .icp .beian-icon {
  height: 16px;
  width: auto;
  vertical-align: -3px;
  margin-right: 4px;
}

@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  .site-header {
    padding-top: 24px;
  }

  .post-title,
  .about h1 {
    font-size: 24px;
  }

  .post-item h2 {
    font-size: 20px;
  }
}