* { box-sizing: border-box; }
body {
  margin: 0;
  color: #202124;
  background: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
}
a { color: #1a5fb4; text-decoration-thickness: .08em; text-underline-offset: .18em; }
.wrap { width: min(920px, calc(100% - 32px)); margin: 0 auto; }
.site-header { border-bottom: 1px solid #e5e7eb; padding: 28px 0 18px; margin-bottom: 36px; }
.site-title { display: inline-block; font-size: 30px; font-weight: 700; color: #111827; text-decoration: none; }
.site-description { margin: 4px 0 16px; color: #6b7280; }
nav { display: flex; gap: 18px; }
.intro { margin-bottom: 28px; }
.intro h1 { font-size: 34px; margin: 0 0 4px; }
.post-list { display: grid; gap: 24px; }
.post-item { border-bottom: 1px solid #e5e7eb; padding-bottom: 22px; }
.post-item time, .meta { color: #6b7280; font-size: 14px; }
.post-item h2 { font-size: 22px; line-height: 1.35; margin: 4px 0 8px; }
.post-item p { margin: 0; color: #4b5563; }
.post { max-width: 780px; }
.post h1 { font-size: 34px; line-height: 1.25; margin: 0 0 8px; }
.content { margin-top: 32px; }
.content h2, .content h3, .content h4, .content h5 { line-height: 1.35; margin-top: 32px; }
.content img { max-width: 100%; height: auto; border: 1px solid #e5e7eb; }
.content pre { overflow-x: auto; padding: 16px; background: #f6f8fa; border: 1px solid #e5e7eb; }
.content code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; }
.post-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 48px; padding-top: 24px; border-top: 1px solid #e5e7eb; }
.site-footer { margin-top: 64px; padding: 28px 0; border-top: 1px solid #e5e7eb; color: #6b7280; }
@media (max-width: 640px) {
  .post h1, .intro h1 { font-size: 28px; }
  .post-item h2 { font-size: 20px; }
}