* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  margin: 0;
  padding: 0;
  background: #fff;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem 1rem;
}

.site-header {
  border-bottom: 1px solid #eaeaea;
  padding: 1rem 0;
  margin-bottom: 2rem;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 600;
  text-decoration: none;
  color: #000;
}

.site-title:hover {
  color: #0066cc;
}

.site-nav {
  margin-top: 0.5rem;
}

.site-nav a {
  margin-right: 1rem;
  text-decoration: none;
  color: #555;
}

.site-nav a:hover {
  color: #0066cc;
}

h1 {
  font-size: 1.75rem;
  margin-top: 0;
}

.post {
  margin-bottom: 3rem;
}

.post time {
  display: block;
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 1rem;
}

.post-tags {
  margin: 0.5rem 0 1rem 0;
}

.post-tags a {
  margin-right: 0.5rem;
  text-decoration: none;
  color: #0066cc;
  font-size: 0.85rem;
  border: 1px solid #ddd;
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
}

.post-tags a:hover {
  background: #f5f5f5;
}

.post-content {
  margin-top: 1rem;
}

.post-content a {
  color: #0066cc;
  text-decoration: underline;
}

.post-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1rem auto;
}

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

.post-list-item {
  border-bottom: 1px solid #eaeaea;
  padding: 0.75rem 0;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.post-list-item a {
  text-decoration: none;
  color: #000;
  font-weight: 500;
}

.post-list-item a:hover {
  color: #0066cc;
}

.post-date {
  color: #666;
  font-size: 0.9rem;
}

.post-nav {
  margin-top: 2rem;
  border-top: 1px solid #eaeaea;
  padding-top: 1rem;
  display: flex;
  justify-content: space-between;
}

.post-nav a {
  text-decoration: none;
  color: #0066cc;
}

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

.site-footer {
  border-top: 1px solid #eaeaea;
  margin-top: 3rem;
  padding: 1.5rem 0;
  font-size: 0.85rem;
  color: #666;
  text-align: center;
}

.site-footer a {
  color: #0066cc;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}