:root{
  --bg-dark:#0d1117;
  --card-dark:#0f1720;
  --text:#c9d1d9;
  --muted:#8b949e;
  --accent:#8b9cfb;
  --radius:12px;
}
:root.light {
  --bg-dark:#f6f8fa;
  --card-dark:#ffffff;
  --text:#0b1220;
  --muted:#586069;
  --accent:#4c6ef5;
}
html,body{height:100%;}
body{
  margin:0;
  font-family: "Noto Serif SC", Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:var(--bg-dark);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
.container{max-width:1100px;margin:36px auto;padding:0 20px;}
.site-header{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;}
.logo{font-weight:700;}
nav a{margin:0 8px;color:var(--muted)}
.hero{display:flex;gap:20px;align-items:center;padding:24px;background:linear-gradient(180deg, rgba(255,255,255,0.02), transparent);border-radius:var(--radius);box-shadow:0 6px 18px rgba(2,6,23,0.6);}
.avatar{width:120px;height:120px;border-radius:50%;object-fit:cover;border:3px solid rgba(255,255,255,0.03)}
.hero h1{margin:0;font-size:28px}
.hero p.sub{color:var(--muted);margin-top:6px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;margin-top:20px}
.card{background:var(--card-dark);padding:16px;border-radius:12px;box-shadow:0 4px 14px rgba(2,6,23,0.6);border:1px solid rgba(255,255,255,0.02)}
a { color:var(--accent); text-decoration:none; }
.post-body img{max-width:100%;height:auto;border-radius:8px;}
.post-body pre{overflow:auto;padding:12px;border-radius:8px;background:rgba(0,0,0,0.4)}
.search-results{position:absolute;background:var(--card-dark);border-radius:8px;max-height:300px;overflow:auto;padding:8px;box-shadow:0 8px 24px rgba(2,6,23,0.6)}
footer{margin-top:40px;padding:20px;color:var(--muted);font-size:14px;text-align:center}
@media (max-width:640px){
  .hero{flex-direction:column;align-items:flex-start}
  .avatar{width:96px;height:96px}
}