body{font-family:Arial;margin:0;color:#222} .container{max-width:1100px;margin:0 auto;padding:16px} header.site-header{background:#0b3a66;color:#fff;padding:12px}.nav a{color:#fff;margin-left:12px;text-decoration:none}.ad-slot{margin:12px 0;padding:10px;border:1px dashed #cfcfcf;text-align:center;background:#fafafa}.ads-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:15px}.ad-card{border:1px solid #eee;padding:10px;background:#fff;border-radius:6px}.footer{background:#f4f4f4;padding:12px;text-align:center;margin-top:24px}