.seo-section{max-width:1180px;margin:56px auto 0;padding:0 24px;color:#152033}.seo-section h2{font-size:clamp(28px,4vw,42px);line-height:1.08;margin:0 0 18px}.seo-section h3{font-size:22px;margin:30px 0 10px}.seo-section p{font-size:17px;line-height:1.7;color:#4c5a70}.seo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:28px 0}.seo-card{border:1px solid #dfe6ef;border-radius:18px;padding:22px;background:#fff}.seo-card strong{display:block;font-size:18px;margin-bottom:8px}.seo-card p{font-size:15px;margin:0}.seo-faq{margin-top:36px}.seo-faq details{border:1px solid #dfe6ef;border-radius:14px;background:#fff;padding:18px 20px;margin:10px 0}.seo-faq summary{cursor:pointer;font-weight:700;color:#172033}.seo-faq details p{margin:12px 0 0;font-size:15px}.seo-note{background:#f6f9fd;border:1px solid #dce8f8;border-radius:16px;padding:18px 20px;margin:24px 0}.seo-guide-link{display:inline-flex;align-items:center;gap:8px;margin-top:10px;font-weight:700;text-decoration:none;color:#1167d8}@media(max-width:780px){.seo-grid{grid-template-columns:1fr}.seo-section{margin-top:38px;padding:0 18px}}