.seo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:26px 0}.seo-card{display:flex;align-items:center;justify-content:space-between;gap:18px;border:1px solid var(--line);padding:24px;background:#fff;border-radius:8px;font-size:16px;font-weight:650;transition:background .2s,border-color .2s}.seo-card:hover{background:var(--pale);border-color:var(--blue)}.seo-card b{color:var(--link)}.seo-reading{max-width:850px;margin:36px auto;font-size:16px;line-height:1.9;overflow-wrap:anywhere}.seo-reading p{margin:0 0 20px}.seo-reading h2,.seo-reading h3,.seo-reading h4{margin:34px 0 18px;line-height:1.3}.seo-reading h2{font-size:28px}.seo-reading h3{font-size:22px}.seo-reading a{color:var(--link);text-decoration:underline}.seo-reading figure{margin:25px 0}.seo-reading img{max-height:420px;object-fit:contain;margin:auto;border-radius:8px}.seo-source-detail{border-top:1px solid var(--line)}.seo-source-detail summary{font-size:19px;font-weight:700;padding:18px 0}.seo-archive{border-left:3px solid var(--orange);padding:18px 24px;background:#fff8ea;max-width:850px;margin:15px auto}.seo-footer-links{display:flex;flex-wrap:wrap;gap:18px;max-width:1260px;margin:0 auto;padding:25px 5%;border-top:1px solid #ddd;font-size:12px}.seo-home-heading{font-size:20px;line-height:1.5;letter-spacing:-.02em;margin:20px 0;max-width:620px}.hero .flagship-slogan{font-size:clamp(44px,5vw,72px);font-weight:750;line-height:1.08;letter-spacing:-.05em;color:var(--ink)}.hero .flagship-slogan span{color:var(--link)}.seo-section>h2{max-width:800px}.nav-wrap{gap:22px}#navigation{gap:20px}@media(max-width:900px){.seo-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.nav-wrap{gap:12px}#navigation{gap:12px}}@media(max-width:680px){.seo-grid{grid-template-columns:1fr;gap:12px}.seo-card{padding:20px}.seo-reading{font-size:15px}.seo-reading h2{font-size:25px}.seo-home-heading{font-size:17px}.seo-archive{font-size:13px}.seo-footer-links{padding-bottom:90px}.hero .flagship-slogan{font-size:48px}}