* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: #1a1a1a;
  background: #fafafa;
  line-height: 1.6;
}
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2rem;
  background: #ffffff;
  border-bottom: 1px solid #e5e5e5;
}
.site-header .logo { font-weight: 700; font-size: 1.1rem; }
.site-header nav a {
  margin-left: 1.5rem;
  text-decoration: none;
  color: #1a1a1a;
  font-weight: 500;
}
.site-header nav a:hover { color: #2563eb; }
.content {
  max-width: 700px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
  min-height: 60vh;
}
.content h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.post-list { list-style: none; padding: 0; }
.post-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid #eee;
  display: flex;
  justify-content: space-between;
}
.post-list a { color: #2563eb; text-decoration: none; font-weight: 500; }
.post-date, .date { color: #888; font-size: 0.9rem; }
.back-link { display: inline-block; margin-top: 2rem; color: #2563eb; }
.site-footer {
  text-align: center;
  padding: 2rem;
  color: #888;
  font-size: 0.85rem;
  border-top: 1px solid #e5e5e5;
}