.seo-header{padding:20px 5%;background:#000;color:#fff}.seo-header nav{display:flex;flex-wrap:wrap;gap:16px;margin-top:16px}.seo-header a{color:inherit}.seo-content,.seo-footer{max-width:1200px;margin:auto;padding:28px 5%;line-height:1.6}.seo-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}.seo-grid img{width:100%;height:260px;object-fit:contain}.seo-grid h2{font-size:17px}.seo-product{display:grid;grid-template-columns:1fr 1fr;gap:32px}.seo-product>img{max-width:100%;height:auto;object-fit:contain}.seo-preview{padding:12px;background:#fff4d4}.seo-content nav{display:flex;justify-content:space-between;margin:24px 0}.seo-intro{padding:22px 5%;max-width:1200px;margin:auto;line-height:1.6}.seo-intro h1{font-size:24px}.seo-footer{border-top:1px solid #ddd}@media(max-width:700px){.seo-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.seo-grid img{height:190px}.seo-product{grid-template-columns:1fr}}