:root{
  --max-width:1100px;
  --accent:#0066ff;
  --muted:#6b7280;
  --text:#0b1220;
  font-family:Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
}
*{box-sizing:border-box}
body{margin:0;color:var(--text);background:#fff;line-height:1.6}
.container{max-width:var(--max-width);margin:0 auto;padding:28px}
.site-header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #eef2f7}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:52px;height:52px;border-radius:8px}
.brand-name{margin:0;font-size:18px;font-weight:800}
.tag{margin:0;color:var(--muted);font-weight:600}
.nav a{margin-left:18px;text-decoration:none;color:var(--muted);font-weight:600}
.hero{padding:48px 0}
.hero h2{font-size:28px;margin:0 0 8px}
.cta{display:inline-block;padding:12px 18px;border-radius:10px;text-decoration:none;font-weight:700;background:var(--accent);color:white}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:12px}
.card{padding:18px;border-radius:12px;background:#fbfdff;border:1px solid #eef4ff}
.post-list{display:grid;gap:12px;margin-top:12px}
.post{padding:14px;border-radius:10px;background:#fff;border:1px solid #eef4ff}
.form{display:grid;gap:12px;max-width:680px}
.form label{display:block;font-weight:700;color:var(--muted)}
.form input,.form textarea{width:100%;padding:10px;border-radius:8px;border:1px solid #e6edf3;background:white}
.btn{padding:10px 14px;border-radius:8px;border:0;font-weight:700;background:var(--accent);color:#fff}
.site-footer{border-top:1px solid #eef2f7;padding:18px 0;text-align:center;color:var(--muted);margin-top:28px}
.muted{color:var(--muted)}
@media (max-width:700px){.nav{display:none}}