.ad-home{max-width:1200px;margin:auto;padding:20px}
.ad-hero{text-align:center;padding:70px 25px;background:#f5f7fb;border-radius:20px}
.ad-btn{display:inline-block;background:#111;color:#fff;padding:12px 22px;border-radius:6px;text-decoration:none;margin:10px}
.ad-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:25px 0}
.ad-grid article{padding:20px;border:1px solid #ddd;border-radius:12px}
.ad-write{text-align:center;padding:40px;background:#f5f5f5;border-radius:20px}
@media(max-width:768px){.ad-grid{grid-template-columns:1fr}}