.product-page { min-height: 100vh; background: var(--ivory); }
.product-site-header { background: rgba(246, 241, 235, .97); border-color: var(--line); box-shadow: 0 4px 24px rgba(33, 48, 38, .05); backdrop-filter: blur(16px); }
.product-detail-main { min-height: calc(100vh - 190px); padding: 104px 0 0; }
.product-detail { max-width: 1380px; min-height: 720px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(420px, .92fr); background: var(--paper); }
.product-gallery { min-width: 0; display: grid; grid-template-columns: 86px minmax(0, 1fr); align-items: start; gap: 14px; padding: clamp(30px, 5vw, 72px); background: var(--ivory-deep); }
.product-main-frame { position: relative; aspect-ratio: 4 / 5; overflow: hidden; background: #f7f3ed; }
.product-main-frame img { width: 100%; height: 100%; padding: 14px; object-fit: contain; object-position: center; }
.product-main-frame > .product-founders-seal { position: absolute; right: 18px; bottom: 18px; z-index: 1; width: 108px; height: auto; padding: 0; filter: drop-shadow(0 8px 20px rgba(0,0,0,.16)); }
.product-thumbs { display: grid; gap: 10px; }
.product-thumb { aspect-ratio: 1; padding: 0; overflow: hidden; border: 1px solid transparent; background: #f7f3ed; cursor: pointer; transition: border-color .2s, transform .2s; }
.product-thumb:hover { transform: translateY(-1px); }
.product-thumb.active { border-color: var(--forest); }
.product-thumb:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.product-thumb img { width: 100%; height: 100%; object-fit: cover; }
.product-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(55px, 7vw, 100px); }
.product-back { width: fit-content; margin-bottom: 42px; padding-bottom: 4px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .68rem; font-weight: 600; letter-spacing: .1em; text-decoration: none; text-transform: uppercase; }
.product-back:hover { color: var(--forest); border-color: var(--forest); }
.product-copy .eyebrow { margin-bottom: 14px; }
.product-founders-band { width: fit-content; margin: 0 0 18px; padding: 8px 12px; border-top: 1px solid rgba(178,139,85,.55); border-bottom: 1px solid rgba(178,139,85,.55); color: #8a6332; font-size: .65rem; font-weight: 600; letter-spacing: .12em; line-height: 1.5; text-transform: uppercase; }
.product-copy h1 { margin-bottom: 18px; color: var(--forest); font-size: clamp(3.25rem, 5.4vw, 5.8rem); }
.product-spec { margin-bottom: 14px; color: var(--muted); font-size: .75rem; font-weight: 500; letter-spacing: .08em; line-height: 1.5; text-transform: uppercase; }
.product-price { margin-bottom: 30px; color: var(--forest); font-family: var(--serif); font-size: 1.75rem; }
.product-description { max-width: 610px; margin-bottom: 34px; color: var(--muted); font-size: 1rem; line-height: 1.8; }
.product-founders-certificate { max-width: 610px; margin: -10px 0 30px; padding: 20px 22px; border-left: 2px solid var(--gold); background: rgba(178,139,85,.08); }
.product-founders-certificate p { margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.7; }
.product-buy { align-self: flex-start; min-width: 190px; }
.product-page footer { border-top: 1px solid var(--line); }
.product-page footer > a:first-child { justify-self: start; }
.product-page footer > a:first-child img { width: 150px; }

@media (max-width: 980px) {
  .product-detail { grid-template-columns: 1fr 1fr; }
  .product-gallery { grid-template-columns: 68px minmax(0, 1fr); padding: 34px 24px; }
  .product-copy { padding: 48px 34px; }
}

@media (max-width: 820px) {
  .product-detail-main { padding-top: 70px; }
  .product-detail { min-height: 0; grid-template-columns: 1fr; }
  .product-gallery { grid-template-columns: 1fr; padding: 22px; }
  .product-main-frame { order: 1; max-height: 72vh; }
  .product-thumbs { order: 2; grid-template-columns: repeat(3, minmax(0, 82px)); justify-content: center; }
  .product-copy { padding: 52px clamp(24px, 8vw, 64px) 70px; }
  .product-back { margin-bottom: 34px; }
  .product-buy { width: 100%; }
  .product-page footer > a:first-child { justify-self: center; }
}

@media (max-width: 520px) {
  .product-gallery { padding: 14px; }
  .product-main-frame img { padding: 8px; }
  .product-main-frame > .product-founders-seal { right: 12px; bottom: 12px; width: 82px; padding: 0; }
  .product-copy { padding: 42px 24px 60px; }
  .product-copy h1 { font-size: clamp(3rem, 15vw, 4.6rem); }
  .product-description { font-size: 1rem; }
}