* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f5f5f5;
}

.main {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
  background: #fff;
  min-height: 100vh;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
}

/* Site Header */
.site-header {
  text-align: center;
  margin-bottom: 60px;
  padding-bottom: 30px;
  border-bottom: 1px solid #eee;
}

.site-title {
  font-size: 2.5em;
  font-weight: bold;
  margin-bottom: 10px;
  color: #1a1a1a;
}

.site-description {
  color: #666;
  font-size: 1.1em;
}

/* Post List */
.post-item {
  margin-bottom: 50px;
  padding-bottom: 30px;
  border-bottom: 1px solid #f0f0f0;
}

.post-item:last-child {
  border-bottom: none;
}

.post-title {
  font-size: 1.8em;
  margin-bottom: 15px;
}

.post-title a {
  color: #1a1a1a;
  text-decoration: none;
  transition: color 0.3s;
}

.post-title a:hover {
  color: #007bff;
}

.post-meta {
  color: #999;
  font-size: 0.9em;
  margin-bottom: 15px;
}

.post-date {
  margin-right: 20px;
}

.post-tags {
  color: #007bff;
}

.post-excerpt {
  color: #555;
  line-height: 1.8;
  margin: 0;
}

/* Site Footer */
.site-footer {
  margin-top: 80px;
  padding-top: 30px;
  border-top: 1px solid #eee;
  text-align: center;
  color: #999;
}

.site-footer p {
  margin-bottom: 10px;
}

.site-footer a {
  color: #007bff;
  text-decoration: none;
}

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

/* Responsive */
@media (max-width: 768px) {
  .main {
    padding: 20px 15px;
  }

  .site-title {
    font-size: 2em;
  }

  .post-title {
    font-size: 1.5em;
  }
}