.product-page main { max-width: 1180px; }
.product-intro { padding: clamp(128px, 17vh, 180px) 0 64px; }
.product-intro nav { margin-bottom: 48px; font-size: .85rem; color: var(--color-text-secondary); }
.product-intro h1 { max-width: 920px; font-size: clamp(2.5rem, 6vw, 5.2rem); letter-spacing: -.045em; }
.product-intro h1 em { color: #365b45; }
.product-lead { max-width: 720px; font-size: clamp(1.1rem, 2vw, 1.35rem); margin-top: 28px; line-height: 1.65; }
.product-row { border-top: 1px solid var(--color-border-hover); padding: 40px 0 48px; display: grid; grid-template-columns: 52px minmax(0, .9fr) minmax(0, 1.1fr); gap: 32px; }
.product-number { color: #846029; font-variant-numeric: tabular-nums; }
.product-row h2 { font-size: clamp(1.45rem, 2.8vw, 2rem); letter-spacing: -.025em; }
.product-row p, .product-faq p, .product-next p { line-height: 1.75; }
.product-row ul { margin-top: 20px; padding-left: 20px; line-height: 1.7; }
.product-links, .product-related { display: flex; flex-wrap: wrap; gap: 16px 28px; margin-top: 24px; }
.product-links a, .product-related a { text-decoration: underline; text-underline-offset: 5px; font-weight: 600; }
.product-faq { padding: 40px 0; max-width: 840px; }
.product-faq h2 { margin-bottom: 24px; }
.product-faq details { border-bottom: 1px solid var(--color-border-hover); padding: 20px 0; }
.product-faq summary { cursor: pointer; font-weight: 600; line-height: 1.5; }
.product-faq details p { padding-top: 16px; }
.product-note { margin-top: 28px; color: var(--color-text-secondary); font-size: .9rem; }
.product-next { margin-top: 64px; padding: 48px; background: #e7e5d8; border-radius: var(--radius-surface); }
.product-next h2 { max-width: 650px; font-size: clamp(1.8rem, 4vw, 3rem); }
.product-next p { margin: 16px 0 24px; max-width: 650px; }
.product-price-link { display: inline-block; margin: 16px 0 0 24px; text-decoration: underline; text-underline-offset: 5px; }
@media(max-width: 680px) {
  .product-intro { padding-bottom: 40px; }
  .product-row { grid-template-columns: 32px minmax(0, 1fr); gap: 16px; padding-block: 28px; }
  .product-row > div { grid-column: 2; }
  .product-next { padding: 28px 20px; }
  .product-next .btn { white-space: normal; text-align: center; }
  .product-price-link { display: block; margin-left: 0; }
}