.product-detail-page #content {
    /* Unlike .page-intro, product breadcrumbs do not reserve the fixed header. */
    padding-top: var(--header-height);
}
.product-breadcrumbs, .product-detail, .product-information, .product-related-section {
    width: min(100%, var(--content-width)); margin-inline: auto; padding-inline: var(--page-gutter);
}
.product-breadcrumbs { padding-top: 28px; display: flex; flex-wrap: wrap; gap: 9px; color: var(--muted); font-size: .64rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.product-breadcrumbs a:hover { color: var(--accent); }
.product-breadcrumbs strong { color: var(--accent); }
.product-detail { padding-block: clamp(34px, 5vw, 76px) clamp(70px, 8vw, 120px); display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(360px, .82fr); gap: clamp(28px, 5vw, 78px); align-items: start; }
.product-detail__media { min-width: 0; display: grid; gap: 10px; }
.product-detail__stage { position: relative; width: 100%; aspect-ratio: 4 / 3; padding: 0; display: grid; place-items: center; overflow: hidden; border: 1px solid var(--line); background: linear-gradient(135deg, var(--bg-alt), var(--surface)); color: var(--muted); cursor: zoom-in; }
.product-detail__stage img { width: 100%; height: 100%; object-fit: contain; }
.product-detail__stage > span { font-family: var(--font-display); font-size: clamp(2rem, 5vw, 5rem); font-weight: 800; }
.product-detail__stage small { position: absolute; right: 14px; bottom: 14px; padding: 8px 10px; background: rgba(5,5,5,.78); color: #fff; font-size: .56rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.product-detail__thumbs { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.product-detail__thumbs button { aspect-ratio: 1; padding: 0; overflow: hidden; border: 1px solid var(--line); background: var(--surface); cursor: pointer; }
.product-detail__thumbs button[aria-current="true"] { border-color: var(--accent); }
.product-detail__thumbs img { width: 100%; height: 100%; object-fit: contain; }
.product-detail__summary { min-width: 0; position: sticky; top: calc(var(--header-height) + 26px); }
.product-detail__status { display: flex; justify-content: space-between; gap: 20px; color: var(--accent); font-size: .64rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.product-detail__status small { color: var(--text-strong); }
.product-detail__status small::before { content: ""; width: 7px; height: 7px; margin-right: 8px; display: inline-block; background: var(--accent); }
.product-detail__summary h1 { margin-top: 24px; font-size: clamp(2.7rem, 4.7vw, 5.7rem); line-height: .9; overflow-wrap: anywhere; }
.product-detail__lead { margin-top: 24px; color: var(--muted); font-size: clamp(.9rem, 1.3vw, 1.08rem); line-height: 1.65; }
.product-detail__price { margin-top: 30px; display: block; color: var(--text-strong); font-family: var(--font-display); font-size: clamp(2rem, 3vw, 3.5rem); }
.product-detail__block { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); }
.product-detail__block > span { color: var(--muted); font-size: .6rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.product-detail__chips { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px; }
.product-detail__chips span { padding: 9px 11px; border: 1px solid var(--line-strong); color: var(--text-strong); font-size: .7rem; }
.product-detail__facts { margin-top: 26px; border-top: 1px solid var(--line); }
.product-detail__facts div { padding: 11px 0; display: grid; grid-template-columns: 110px minmax(0,1fr); gap: 18px; border-bottom: 1px solid var(--line); }
.product-detail__facts dt { color: var(--muted); font-size: .59rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.product-detail__facts dd { margin: 0; color: var(--text-strong); font-size: .78rem; }
.product-detail__actions { margin-top: 28px; display: grid; grid-template-columns: .72fr 1.28fr; gap: 9px; }
.product-detail__actions .button { width: 100%; min-height: 56px; padding-inline: 14px; }
.product-cart-coming { border-color: var(--line); color: var(--muted); opacity: .7; cursor: not-allowed; }
.product-detail__favorite { margin-top: 10px; }
.product-detail__favorite .interaction-button { position: static; width: 100%; min-height: 48px; display: flex; justify-content: center; gap: 10px; border: 1px solid var(--line); }
.product-detail__favorite b { font-size: .65rem; letter-spacing: .08em; text-transform: uppercase; }
.product-information { padding-block: clamp(65px, 8vw, 118px); border-top: 1px solid var(--line); }
.product-information header h2, .product-related-section > header h2 { margin-top: 16px; font-size: clamp(2.2rem, 4vw, 4.8rem); }
.product-information__grid { margin-top: 42px; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.product-information article { min-height: 220px; padding: clamp(20px, 3vw, 34px); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.product-information article > span { color: var(--accent); font-size: .61rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.product-information p, .product-information ul { margin-top: 20px; color: var(--muted); line-height: 1.7; }
.product-information ul { padding-left: 18px; }
.product-information li + li { margin-top: 7px; }
.product-related-section { padding-block: clamp(65px, 8vw, 118px); border-top: 1px solid var(--line); }
.product-project-grid { margin-top: 42px; display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.product-project { min-width: 0; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); }
.product-project > span { aspect-ratio: 4 / 3; display: block; overflow: hidden; }
.product-project img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s var(--ease-out); }
.product-project:hover img { transform: scale(1.04); }
.product-project div { min-height: 145px; padding: 18px; display: grid; align-content: start; }
.product-project small { color: var(--accent); font-size: .58rem; font-weight: 850; letter-spacing: .1em; }
.product-project strong { margin-top: 10px; color: var(--text-strong); font-family: var(--font-display); font-size: 1.4rem; line-height: 1; text-transform: uppercase; }
.product-project i { margin-top: auto; padding-top: 18px; color: var(--accent); font-style: normal; font-size: .6rem; font-weight: 850; letter-spacing: .1em; }
.product-detail-missing { min-height: 65vh; }
@media (max-width: 980px) {
    .product-detail { grid-template-columns: 1fr; }
    .product-detail__summary { position: static; }
    .product-information__grid { grid-template-columns: 1fr; }
    .product-project-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 560px) {
    .product-breadcrumbs { padding-top: 18px; }
    .product-detail { padding-top: 22px; gap: 28px; }
    .product-detail__thumbs { grid-template-columns: repeat(4, minmax(0,1fr)); }
    .product-detail__summary h1 { font-size: clamp(2.35rem, 12vw, 3.6rem); }
    .product-detail__actions { grid-template-columns: 1fr; }
    .product-information__grid, .product-project-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .product-information article { min-height: 180px; padding: 17px 14px; }
    .product-information p, .product-information ul { font-size: .72rem; }
    .product-project div { min-height: 125px; padding: 13px; }
    .product-project strong { font-size: 1.05rem; }
}