* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif; color: #2c3e50; background: #f7f8fa; line-height: 1.8; }
.container { max-width: 860px; margin: 0 auto; padding: 0 20px; }
a { color: #2563eb; text-decoration: none; }
a:hover { text-decoration: underline; }
.site-header { background: #1e293b; padding: 16px 0; }
.site-header .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.site-title { color: #fff; font-size: 20px; font-weight: 600; }
.site-title:hover { text-decoration: none; opacity: 0.9; }
.site-nav a { color: #cbd5e1; margin-left: 20px; font-size: 15px; }
.site-nav a:hover { color: #fff; text-decoration: none; }
main.container { background: #fff; margin-top: 24px; margin-bottom: 24px; padding: 32px 28px; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); min-height: 50vh; }
.intro h1 { font-size: 26px; margin-bottom: 12px; }
.intro p { color: #64748b; margin-bottom: 24px; }
.post-list h2 { font-size: 20px; border-left: 4px solid #2563eb; padding-left: 10px; margin-bottom: 18px; }
.post-item { padding: 14px 0; border-bottom: 1px solid #eef2f7; }
.post-item h3 { font-size: 18px; font-weight: 600; }
.post-item h3 a { color: #1e293b; }
.post-item h3 a:hover { color: #2563eb; text-decoration: none; }
.post-meta { font-size: 13px; color: #94a3b8; margin: 6px 0; }
.post-meta a { color: #94a3b8; }
.post-summary { font-size: 14px; color: #64748b; }
.page-title { font-size: 24px; margin-bottom: 20px; border-left: 4px solid #2563eb; padding-left: 10px; }
.post-title { font-size: 26px; margin-bottom: 8px; }
.post-content { margin-top: 20px; font-size: 15.5px; }
.post-content h2 { font-size: 21px; margin: 28px 0 12px; padding-bottom: 6px; border-bottom: 1px solid #eef2f7; }
.post-content h3 { font-size: 18px; margin: 22px 0 10px; }
.post-content p { margin: 12px 0; }
.post-content ul, .post-content ol { margin: 12px 0 12px 24px; }
.post-content code { background: #f1f5f9; padding: 2px 6px; border-radius: 4px; font-size: 14px; font-family: 'SF Mono', Menlo, Consolas, monospace; }
.post-content pre { background: #1e293b; color: #e2e8f0; padding: 14px 16px; border-radius: 8px; overflow-x: auto; margin: 14px 0; }
.post-content pre code { background: transparent; color: inherit; padding: 0; }
.post-content blockquote { border-left: 4px solid #cbd5e1; padding: 4px 14px; color: #64748b; margin: 14px 0; background: #f8fafc; }
.post-content table { border-collapse: collapse; margin: 14px 0; width: 100%; }
.post-content th, .post-content td { border: 1px solid #e2e8f0; padding: 8px 12px; font-size: 14px; }
.post-content th { background: #f1f5f9; }
.terms-list { list-style: none; }
.terms-list li { padding: 10px 0; border-bottom: 1px solid #eef2f7; font-size: 16px; }
.site-footer { padding: 24px 0 32px; text-align: center; color: #94a3b8; font-size: 13px; }
.site-footer a { color: #94a3b8; text-decoration: underline; }
@media (max-width: 600px) {
  .site-header .container { flex-direction: column; align-items: flex-start; }
  .site-nav { margin-top: 8px; }
  .site-nav a { margin-left: 0; margin-right: 16px; }
  main.container { padding: 22px 16px; }
}