:root{
  --dark:#0a0f1c;
  --radius:16px;
  --gap:24px;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:'Inter',sans-serif;
  background:var(--dark);
  color:#e5e7eb;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:var(--gap);
  padding:40px 16px;
  min-height:100vh;
}
.site-title{
  font-size:32px;
  margin:0 0 16px;
  color:#3b82f6;
}
.card-grid{
  display:grid;
  gap:var(--gap);
}
.upper{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));max-width:1200px;width:100%}
.lower{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));max-width:800px;width:100%}
.card{
  width:100%;
  border-radius:var(--radius);
  box-shadow:0 4px 24px rgba(0,0,0,.35);
  object-fit:cover;
}
.feed{
  width:100%;
  max-width:1200px;
  height:320px;
  background:#111827;
  border-radius:calc(var(--radius)*1.5);
  padding:16px;
  overflow:auto;
  box-shadow:inset 0 0 12px rgba(0,0,0,.4);
}
.placeholder{opacity:.6}
@media(max-width:768px){
  body{padding:24px 8px}
  .site-title{font-size:24px}
  .feed{height:240px}
}