/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #fff;
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem;
  transition: background 0.3s, color 0.3s;
}

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

header h1 a {
  text-decoration: none;
  color: inherit;
}

nav a {
  margin-right: 1.5rem;
  text-decoration: none;
  color: #555;
  font-weight: 500;
}

nav a:hover {
  color: #000;
}

.container {
  min-height: 70vh;
}

.post-list {
  list-style: none;
  margin-top: 1rem;
}

.post-list li {
  margin-bottom: 0.8rem;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.date {
  color: #999;
  font-size: 0.9em;
  min-width: 6.5em;
  display: inline-block;
}

.meta {
  color: #777;
  font-size: 0.9em;
  margin-bottom: 1.5rem;
}

article h2 {
  margin-bottom: 0.2rem;
}

article p {
  margin-bottom: 1rem;
}

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid #eaeaea;
  text-align: center;
  color: #aaa;
  font-size: 0.9em;
}

/* 暗色模式 */
@media (prefers-color-scheme: dark) {
  body {
    background: #1a1a1a;
    color: #ddd;
  }
  header {
    border-color: #333;
  }
  nav a {
    color: #aaa;
  }
  nav a:hover {
    color: #fff;
  }
  .date, .meta {
    color: #888;
  }
  footer {
    border-color: #333;
    color: #666;
  }
  a {
    color: #9cf;
  }
}