:root {
  --seo-primary: #318223;
  --seo-text: #1f2f21;
  --seo-muted: #657265;
  --seo-border: #e4ebdf;
  --seo-bg: #f7faf5;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--seo-text); background: #fff; line-height: 1.65; }
a { color: inherit; }
.seo-header, .seo-footer { max-width: 1120px; margin: 0 auto; padding: 22px 20px; display: flex; gap: 18px; align-items: center; justify-content: space-between; }
.seo-logo { font-weight: 900; color: var(--seo-primary); text-decoration: none; font-size: 22px; }
.seo-nav { display: flex; gap: 16px; flex-wrap: wrap; font-size: 14px; color: var(--seo-muted); }
.seo-nav a { text-decoration: none; }
.seo-main { max-width: 1120px; margin: 0 auto; padding: 20px; }
.breadcrumb { font-size: 13px; color: var(--seo-muted); margin: 0 0 18px; }
.breadcrumb a { color: var(--seo-muted); text-decoration: none; }
.product-layout { display: grid; grid-template-columns: minmax(280px, 480px) 1fr; gap: 40px; align-items: start; }
.product-image { width: 100%; border-radius: 18px; border: 1px solid var(--seo-border); background: var(--seo-bg); aspect-ratio: 1 / 1; object-fit: cover; }
.product-kicker { color: var(--seo-primary); font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; margin: 0 0 8px; }
h1 { font-size: clamp(30px, 5vw, 52px); line-height: 1.08; margin: 0 0 16px; letter-spacing: -.02em; }
h2 { font-size: clamp(22px, 3vw, 32px); line-height: 1.18; margin: 36px 0 12px; }
.price { color: var(--seo-primary); font-size: 30px; font-weight: 900; margin: 18px 0; }
.original-price { color: #9aa49a; text-decoration: line-through; font-size: 18px; margin-left: 10px; }
.summary, .content { color: #334833; font-size: 17px; }
.meta-list { display: grid; gap: 10px; padding: 18px; border: 1px solid var(--seo-border); border-radius: 14px; background: var(--seo-bg); margin: 22px 0; }
.cta { display: inline-flex; align-items: center; justify-content: center; background: var(--seo-primary); color: #fff; text-decoration: none; border-radius: 10px; padding: 14px 20px; font-weight: 800; margin-top: 10px; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 24px; }
.card { border: 1px solid var(--seo-border); border-radius: 14px; overflow: hidden; background: #fff; text-decoration: none; display: block; }
.card img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; background: var(--seo-bg); display: block; }
.card-body { padding: 14px; }
.card-title { font-weight: 800; line-height: 1.4; margin: 0 0 8px; font-size: 15px; }
.card-price { color: var(--seo-primary); font-weight: 900; }
.category-intro { max-width: 780px; color: var(--seo-muted); font-size: 17px; }
.seo-footer { border-top: 1px solid var(--seo-border); margin-top: 50px; color: var(--seo-muted); font-size: 14px; }
@media (max-width: 820px) {
  .product-layout { grid-template-columns: 1fr; gap: 24px; }
  .grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .seo-header, .seo-footer { align-items: flex-start; flex-direction: column; }
}