:root{--bg:#f6f8fa;--card:#fff;--accent:#2563eb;--muted:#6b7280}
*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;background:var(--bg);color:#03111a}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--card);box-shadow:0 6px 20px rgba(2,6,23,0.06)}
.brand{font-weight:700;display:flex;gap:12px;align-items:center}
.container{max-width:1100px;margin:18px auto;display:grid;grid-template-columns:280px 1fr 320px;gap:16px;padding:0 12px}
@media(max-width:1000px){.container{grid-template-columns:1fr;padding:0 8px}.right{order:3}}
.card{background:var(--card);padding:12px;border-radius:10px;box-shadow:0 6px 20px rgba(2,6,23,0.04)}
.avatar{width:64px;height:64px;border-radius:12px;object-fit:cover}
.btn{padding:8px 12px;border-radius:8px;border:0;cursor:pointer}
.btn-primary{background:var(--accent);color:#fff;font-weight:700}
.small{font-size:13px;color:var(--muted)}
.post-media img{max-width:100%;height:auto;border-radius:8px;margin-top:8px}
.post{margin-top:12px;padding:12px;border-radius:10px;border:1px solid rgba(2,6,23,0.04)}
.hidden{display:none}
.comment{background:#fbfeff;padding:8px;border-radius:8px;margin-top:6px}
input,textarea{width:100%;padding:8px;border-radius:8px;border:1px solid #e6eef8;margin-top:6px}
a{color:var(--accent);text-decoration:none}