* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; line-height: 1.8; color: #333; background: #f5f5f5; }
.container { max-width: 800px; margin: 0 auto; padding: 20px; }
header { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; padding: 60px 0 30px; text-align: center; margin-bottom: 30px; }
header h1 { font-size: 2em; margin-bottom: 10px; }
header p { opacity: 0.9; font-size: 1.1em; }
nav { background: white; padding: 15px 0; margin-bottom: 30px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
nav .container { display: flex; gap: 20px; flex-wrap: wrap; }
nav a { color: #667eea; text-decoration: none; font-weight: 500; }
nav a:hover { text-decoration: underline; }
.article-card { background: white; border-radius: 8px; padding: 25px; margin-bottom: 20px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); transition: transform 0.2s; }
.article-card:hover { transform: translateY(-2px); }
.article-card h2 { font-size: 1.3em; margin-bottom: 10px; }
.article-card h2 a { color: #333; text-decoration: none; }
.article-card h2 a:hover { color: #667eea; }
.article-card .meta { color: #999; font-size: 0.9em; margin-bottom: 10px; }
.article-card .category { display: inline-block; background: #667eea; color: white; padding: 2px 10px; border-radius: 12px; font-size: 0.8em; margin-left: 10px; }
article { background: white; border-radius: 8px; padding: 40px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
article h1 { font-size: 1.8em; margin-bottom: 15px; color: #222; }
article h2 { font-size: 1.4em; margin: 30px 0 15px; color: #333; border-left: 4px solid #667eea; padding-left: 12px; }
article h3 { font-size: 1.1em; margin: 20px 0 10px; color: #444; }
article p { margin-bottom: 15px; }
article ul, article ol { margin: 15px 0 15px 25px; }
article li { margin-bottom: 8px; }
article blockquote { background: #f8f9ff; border-left: 4px solid #667eea; padding: 15px 20px; margin: 20px 0; color: #555; border-radius: 0 8px 8px 0; }
article strong { color: #333; }
footer { text-align: center; padding: 40px 20px; color: #999; font-size: 0.9em; margin-top: 40px; }
@media (max-width: 600px) { article { padding: 20px; } header { padding: 40px 0 20px; } }