.seo-public{background:#eef2f8}
.seo-top{background:#fff;border-bottom:1px solid #e3e9f3}
.seo-top__in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.seo-top .brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:#0b1c4d;font:700 18px "Sora",sans-serif}
.seo-top .brand b{color:#1769ff}
.seo-top__nav{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.seo-top__nav a{color:#334155;text-decoration:none;font:600 14px "IBM Plex Sans Thai",sans-serif}
.seo-top__nav a.btn{color:#fff}
.seo-main{padding:28px 0 48px}
.seo-hero h1,.seo-prose h1,.seo-detail h1{margin:0 0 10px;font:700 clamp(28px,3vw,42px)/1.2 "Prompt",sans-serif;color:#0b1c4d}
.seo-hero p,.seo-prose p{color:#475569;font-size:16px;line-height:1.65}
.seo-bc{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px;font-size:13px;color:#64748b}
.seo-bc a{color:#1769ff;text-decoration:none}
.seo-cats{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 24px}
.seo-cats a{padding:6px 12px;border-radius:999px;background:#fff;color:#334155;text-decoration:none;font-size:13px;border:1px solid #e3e9f3}
.seo-cats a.is-on{background:#1769ff;color:#fff;border-color:#1769ff}
.seo-empty{padding:24px;background:#fff;border-radius:12px}
.seo-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}
.seo-cards .pic-wrap{position:relative}
.seo-cards .pic{display:block;aspect-ratio:var(--poster-w,3)/var(--poster-h,4);overflow:hidden;background:#111;border-radius:12px}
.seo-cards .pic iframe{width:100%;height:100%;border:0}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:10px;text-decoration:none;font-weight:700;border:0}
.btn.primary{background:#1769ff;color:#fff}
.btn.outline{border:1px solid #cbd5e1;color:#0b1c4d;background:#fff}
.seo-detail__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,380px);gap:28px;align-items:start}
.seo-detail__stage{margin:0;background:#0a0e14;border-radius:16px;overflow:hidden}
.seo-detail__stage iframe{display:block;width:100%;height:min(80vh,720px);border:0}
.seo-kicker{margin:0 0 8px;color:#1769ff;font-weight:700}
.seo-detail__cta{display:flex;flex-wrap:wrap;gap:10px}
.seo-steps{padding-left:1.2em;color:#334155;line-height:1.7}
.seo-plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:20px}
.seo-plan{background:#fff;border-radius:16px;padding:18px;border:1px solid #e3e9f3}
.seo-plan__price{font-weight:700;color:#0b1c4d}
.seo-foot{margin-top:12px}
@media (max-width:860px){
  .seo-detail__grid{grid-template-columns:1fr}
  .seo-top__in{flex-direction:column;align-items:flex-start;padding:12px 0}
}