/* 基础样式，注释解释关键类名，方便你修改 */
:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --accent:#2563eb;
  --text:#1f2937;
}
*{box-sizing:border-box}
body{font-family:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial; background:var(--bg); color:var(--text); margin:0; line-height:1.6}
.container{max-width:900px;margin:0 auto;padding:20px;}
.site-header{background:var(--card);box-shadow:0 1px 0 rgba(0,0,0,0.06);padding:12px 0;margin-bottom:18px}
.site-title{margin:0;font-size:20px;display:inline-block}
.site-title a{text-decoration:none;color:var(--text)}
.site-nav{float:right}
.site-nav a{margin-left:14px;text-decoration:none;color:var(--accent)}
.hero{background:linear-gradient(90deg, rgba(37,99,235,0.06), rgba(99,102,241,0.04));padding:18px;border-radius:8px;margin-bottom:18px}
.posts{margin-bottom:18px}
.post{background:var(--card);padding:14px;border-radius:8px;margin-bottom:12px;box-shadow:0 2px 8px rgba(20,20,20,0.03)}
.post-title{margin:0 0 6px 0}
.post-title a{text-decoration:none;color:var(--text);font-weight:600}
.post-excerpt{color:#374151;margin:6px 0 0 0}
.sidebar{background:var(--card);padding:14px;border-radius:8px;box-shadow:0 2px 8px rgba(20,20,20,0.03);margin-top:12px}
.site-footer{padding:18px 0;text-align:center;color:#6b7280;margin-top:24px}
/* 文章详情 */
.article{display:block;padding-bottom:40px}
.article .content{background:var(--card);padding:18px;border-radius:8px;box-shadow:0 2px 8px rgba(20,20,20,0.03)}
.meta{color:#6b7280;font-size:14px;margin-bottom:12px}
/* 响应式 */
@media (max-width:700px){
  .site-nav{float:none;margin-top:8px}
  .container{padding:14px}
}