.product-detail-v2 {
  --pd-panel: var(--elevated);
  --pd-soft: var(--bg-secondary);
  --pd-light: var(--primary-text);
  --pd-dark-text: var(--bg);
  --font-heading: 'Inter', system-ui, -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --radius-image: 8px;
  --radius-control: 8px;
  overflow-x: clip;
}

.product-detail-v2 .container { width: min(100%, 1440px); max-width: 1440px; }
.product-detail-v2 main { padding-top: 108px; }
.product-detail-v2 section[id] { scroll-margin-top: 164px; }
.product-detail-v2 .btn { min-height: 52px; }
.product-detail-v2 .pd-red-btn {
  background: var(--brand-red-deep);
  border-color: var(--brand-red-deep);
  color: var(--primary-text);
}
.product-detail-v2 .pd-red-btn:hover {
  background: var(--brand-red-hover);
  border-color: var(--brand-red-hover);
  color: var(--primary-text);
  transform: translateY(-1px);
}

.pd-breadcrumb { display: flex; flex-wrap: wrap; gap: 7px; padding: 18px 0 26px; color: var(--muted-text); font-size: 12px; }
.pd-breadcrumb ol { display: flex; flex-wrap: wrap; gap: 7px; margin: 0; padding: 0; list-style: none; }
.pd-breadcrumb li:not(:last-child)::after { content: '/'; margin-left: 7px; color: var(--border-strong); }
.pd-breadcrumb a:hover { color: var(--primary-text); }

.pd-buying { padding: 0 0 clamp(72px, 8vw, 112px); }
.pd-buying-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(400px, 1fr); gap: clamp(28px, 3.4vw, 56px); align-items: start; }
.pd-gallery { min-width: 0; }
.pd-gallery-main { position: relative; width: 100%; min-height: 0; aspect-ratio: 1 / 1; padding: 0; border: 1px solid var(--border); border-radius: var(--radius-image); background: transparent; color: inherit; overflow: hidden; }
.pd-gallery-main .photo-placeholder { min-height: 100%; height: 100%; border: 0; border-radius: 0; }
.pd-gallery-photo { position: relative; width: 100%; height: 100%; display: grid; place-items: center; margin: 0; background: var(--bg); }
.pd-gallery-image { width: 100%; height: 100%; display: block; object-fit: contain; }
.pd-gallery-photo figcaption { position: absolute; z-index: 2; left: 18px; bottom: 18px; padding: 8px 10px; border: 1px solid var(--border); background: color-mix(in oklch, var(--bg) 88%, transparent); color: var(--primary-text); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.pd-gallery-main > span { position: absolute; z-index: 2; right: 18px; bottom: 18px; padding: 8px 10px; border: 1px solid var(--border); background: color-mix(in oklch, var(--bg) 88%, transparent); color: var(--primary-text); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.pd-gallery-main .photo-placeholder::after { content: 'VIEW LARGER'; position: absolute; right: 18px; top: 18px; padding: 8px 10px; background: color-mix(in oklch, var(--bg) 88%, transparent); border: 1px solid var(--border); color: var(--primary-text); font-size: 10px; letter-spacing: .12em; }
.pd-gallery-main:hover { border-color: color-mix(in oklch, var(--brand-red) 48%, var(--border)); }
.pd-thumbnails { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; margin-top: 12px; }
.pd-thumbnails button { min-width: 0; aspect-ratio: 4 / 3; padding: 12px 8px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-control); background: linear-gradient(145deg, var(--elevated), var(--bg-secondary)); color: var(--secondary-text); font-size: 10px; line-height: 1.25; text-align: left; }
.pd-thumbnails button span { display: block; margin-bottom: 7px; color: var(--brand-red-text); font-size: 9px; letter-spacing: .1em; }
.pd-thumbnails button.is-active { border-color: var(--brand-red); box-shadow: inset 0 0 0 1px var(--brand-red); }
.pd-thumbnails button:hover { border-color: var(--border-strong); color: var(--primary-text); }
.pd-thumbnails .photo-placeholder { min-height: 100%; height: 100%; border: 0; border-radius: 0; }
.pd-thumbnails .photo-placeholder::before { display: none; }
.pd-thumbnails .photo-placeholder figcaption { inset: auto 8px 8px; font-size: 9px; line-height: 1.25; }
.pd-thumbnails-three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.pd-thumbnails-three button { padding: 0; }
.pd-thumbnails-three button > .pd-thumb-image { position: relative; display: block; width: 100%; height: 100%; margin: 0; overflow: hidden; background: var(--bg-secondary); color: inherit; font-size: inherit; letter-spacing: normal; }
.pd-thumbnails-three .pd-thumb-image img { width: 100%; height: 100%; display: block; object-fit: cover; }
.pd-thumbnails-three .pd-thumb-image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(transparent 48%, color-mix(in oklch, var(--bg) 84%, transparent)); pointer-events: none; }
.pd-thumbnails-three .pd-thumb-caption { position: absolute; z-index: 1; left: 8px; right: 8px; bottom: 8px; margin: 0; color: var(--primary-text); font-size: 10px; line-height: 1.25; }

.pd-purchase-panel { position: sticky; top: 108px; padding: clamp(24px, 3vw, 38px); border: 1px solid var(--border); border-radius: 8px; background: var(--pd-panel); box-shadow: 0 18px 48px color-mix(in oklch, var(--bg) 62%, transparent); }
.pd-product-label { color: var(--brand-red-text); font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; }
.pd-purchase-panel h1 { margin-top: 14px; font-size: clamp(42px, 4.1vw, 60px); }
.pd-summary { margin-top: 18px; color: var(--secondary-text); font-size: 16px; }
.pd-purchase-panel[data-od-id="tank300-purchase-panel"] h1 {
  margin-top: 10px;
  font-size: clamp(30px, 2.35vw, 36px);
  line-height: 1.1;
  letter-spacing: -.038em;
  text-wrap: balance;
}
.pd-purchase-panel[data-od-id="tank300-purchase-panel"] .pd-summary {
  margin-top: 10px;
  line-height: 1.5;
}
.pd-core-specs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 28px; border-block: 1px solid var(--border); }
.pd-core-specs dt, .pd-core-specs dd { margin: 0; }
.pd-core-specs div { padding: 16px 12px 16px 0; border-bottom: 1px solid var(--border); }
.pd-core-specs div:nth-last-child(-n+2) { border-bottom: 0; }
.pd-core-specs span, .pd-price-block span, .pd-lead-time span { display: block; color: var(--muted-text); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.pd-core-specs strong { display: block; margin-top: 4px; font-size: 14px; font-weight: 600; }
.pd-price-block { margin-top: 26px; padding: 22px; border-left: 2px solid var(--brand-red); background: var(--pd-soft); }
.pd-price-block > p { margin-top: 5px; color: var(--primary-text); font: 700 25px/1.2 var(--font-heading); letter-spacing: -.02em; }
.pd-price-block small { display: block; margin-top: 6px; color: var(--secondary-text); font-size: 12px; }
.pd-price-block > div { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 18px; margin-top: 16px; }
.pd-price-block b { color: var(--muted-text); font-size: 10px; letter-spacing: .05em; text-transform: uppercase; }
.pd-price-block em { display: block; margin-top: 3px; color: var(--primary-text); font-style: normal; font-size: 12px; letter-spacing: 0; text-transform: none; }
.pd-check-list li::before { content: '✓'; margin-right: 9px; color: var(--brand-red-text); font-weight: 700; }

.pd-option-groups { display: grid; gap: 18px; margin-top: 24px; }
.pd-option-groups fieldset { margin: 0; padding: 0; border: 0; }
.pd-option-groups legend { margin-bottom: 9px; color: var(--secondary-text); font-size: 12px; font-weight: 600; }
.pd-option-groups fieldset > div { display: flex; flex-wrap: wrap; gap: 8px; }
.pd-option-groups button, .pd-parts-list button { min-height: 44px; padding: 9px 13px; border: 1px solid var(--border); border-radius: var(--radius-control); background: var(--bg-secondary); color: var(--secondary-text); font-size: 12px; }
.pd-option-groups button:hover, .pd-parts-list button:hover { border-color: var(--border-strong); color: var(--primary-text); }
.pd-option-groups button.is-selected, .pd-parts-list button.is-active { border-color: var(--brand-red); background: color-mix(in oklch, var(--brand-red) 9%, var(--bg-secondary)); color: var(--primary-text); }
.pd-selection-summary { margin-top: 12px; color: var(--muted-text); font-size: 11px; }
.pd-included-compact { margin-top: 24px; padding-top: 22px; border-top: 1px solid var(--border); }
.pd-included-compact > p { font-family: var(--font-heading); font-size: 17px; font-weight: 600; }
.pd-check-list, .pd-included-compact ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px 16px; margin-top: 14px; color: var(--secondary-text); font-size: 12px; }
.pd-included-compact li::before { content: '✓'; margin-right: 9px; color: var(--brand-red-text); font-weight: 700; }
.pd-lead-time { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: 22px; }
.pd-lead-time div { padding: 12px; border: 1px solid var(--border); border-radius: var(--radius-control); }
.pd-lead-time strong, .pd-lead-time b { display: block; margin-top: 5px; font-size: 12px; }
.pd-buy-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 24px; }
.pd-buy-actions .pd-fitment-link { grid-column: 1 / -1; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; color: var(--primary-text); font-size: 12px; text-decoration: underline; text-decoration-color: var(--brand-red); text-underline-offset: 5px; }
.pd-micro-trust { margin-top: 14px; color: var(--muted-text); font-size: 11px; text-align: center; }

.pd-trust-bar { padding: 28px 0; border-block: 1px solid var(--border); background: var(--bg-secondary); }
.pd-trust-bar ul { display: grid; grid-template-columns: repeat(5, 1fr); }
.pd-trust-bar li { min-height: 48px; display: flex; align-items: center; gap: 12px; padding: 0 22px; border-right: 1px solid var(--border); color: var(--secondary-text); font-size: 12px; letter-spacing: .04em; text-transform: uppercase; }
.pd-trust-bar li:first-child { padding-left: 0; }
.pd-trust-bar li:last-child { padding-right: 0; border-right: 0; }
.pd-trust-bar li::before { content: ''; width: 14px; height: 14px; flex: 0 0 14px; border: 1px solid var(--brand-red); border-radius: 50%; box-shadow: inset 0 0 0 4px var(--bg-secondary); background: var(--brand-red); }

.pd-anchor-nav { position: sticky; top: 94px; z-index: 82; height: 62px; border-bottom: 1px solid var(--border); background: color-mix(in oklch, var(--bg) 92%, transparent); backdrop-filter: blur(16px); }
.pd-anchor-nav .container { height: 100%; display: flex; align-items: center; gap: 18px; }
.pd-anchor-links { flex: 1; min-width: 0; display: flex; gap: 26px; overflow-x: auto; scrollbar-width: none; }
.pd-anchor-links::-webkit-scrollbar { display: none; }
.pd-anchor-links a { min-height: 44px; display: inline-flex; align-items: center; white-space: nowrap; color: var(--secondary-text); font-size: 12px; }
.pd-anchor-links a:hover { color: var(--primary-text); }
.pd-anchor-nav .btn { min-height: 42px; padding-inline: 20px; flex: 0 0 auto; }

.pd-section-head { max-width: 860px; margin-bottom: clamp(42px, 5vw, 66px); }
.pd-section-head .lead { margin-top: 16px; }
.pd-split { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr); gap: clamp(42px, 6vw, 88px); align-items: center; }
.pd-large-photo { min-height: 560px; }
.pd-feature-list { border-top: 1px solid var(--border); }
.pd-feature-list article { display: grid; grid-template-columns: 52px 1fr; gap: 14px; padding: 22px 0; border-bottom: 1px solid var(--border); }
.pd-feature-list .number { color: var(--brand-red-text); font-size: 11px; letter-spacing: .1em; }
.pd-feature-list h3 { font-size: 18px; }
.pd-feature-list p { margin-top: 6px; color: var(--secondary-text); font-size: 14px; }

.pd-kit-section { background: var(--bg-secondary); }
.pd-kit-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(340px, .75fr); gap: 28px; }
.pd-kit-visual { min-height: 650px; }
.pd-kit-visual::after { content: ''; position: absolute; inset: 12% 10%; border: 1px dashed color-mix(in oklch, var(--brand-red) 42%, var(--border)); pointer-events: none; }
.pd-parts-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; align-content: start; }
.pd-parts-list button { text-align: left; }
.pd-parts-list button span { display: block; margin-bottom: 5px; color: var(--brand-red-text); font-size: 10px; }
.pd-kit-grid aside > p { margin-top: 20px; color: var(--secondary-text); }

.pd-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-image); }
.pd-data-table { width: 100%; min-width: 720px; border-collapse: collapse; }
.pd-data-table th, .pd-data-table td { padding: 18px 20px; border-bottom: 1px solid var(--border); text-align: left; }
.pd-data-table th { background: var(--bg-secondary); color: var(--muted-text); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.pd-data-table td { color: var(--secondary-text); font-size: 14px; }
.pd-data-table tr:last-child td { border-bottom: 0; }
.pd-status { display: inline-flex; min-height: 28px; align-items: center; gap: 7px; color: var(--primary-text); font-size: 11px; }
.pd-status::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--brand-red); }
.pd-status.is-confirm::before { background: var(--muted-text); }
.pd-fitment-card { margin-top: 26px; display: grid; grid-template-columns: minmax(220px, .8fr) 1fr auto; gap: 26px; align-items: center; padding: 26px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg-secondary); }
.pd-fitment-card ul { display: flex; flex-wrap: wrap; gap: 8px 22px; color: var(--secondary-text); font-size: 13px; }
.pd-fitment-card li::before { content: '—'; margin-right: 8px; color: var(--brand-red-text); }

.pd-specifications { background: var(--primary-text); color: var(--bg); }
.pd-specifications .eyebrow { color: var(--brand-red-deep); }
.pd-specifications .lead { color: color-mix(in oklch, var(--bg) 68%, var(--primary-text)); }
.pd-spec-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid color-mix(in oklch, var(--bg) 22%, var(--primary-text)); }
.pd-spec-grid div { display: grid; grid-template-columns: 40% 60%; min-height: 60px; align-items: center; padding: 10px 18px; border-bottom: 1px solid color-mix(in oklch, var(--bg) 22%, var(--primary-text)); }
.pd-spec-grid div:nth-child(odd) { border-right: 1px solid color-mix(in oklch, var(--bg) 22%, var(--primary-text)); }
.pd-spec-grid dt { color: color-mix(in oklch, var(--bg) 64%, var(--primary-text)); font-size: 12px; }
.pd-spec-grid dd { margin: 0; font-size: 14px; font-weight: 600; }

.pd-details { display: grid; gap: clamp(64px, 8vw, 112px); }
.pd-detail-module { display: grid; grid-template-columns: 58fr 42fr; gap: clamp(34px, 5vw, 72px); align-items: center; }
.pd-detail-module:nth-child(even) { grid-template-columns: 42fr 58fr; }
.pd-detail-module:nth-child(even) > :first-child { order: 2; }
.pd-detail-module .photo-placeholder { min-height: 520px; }
.pd-detail-photo { margin: 0; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-image); background: var(--bg-secondary); }
.pd-detail-photo img { width: 100%; height: auto; display: block; }
.pd-detail-photo figcaption { padding: 12px 14px; border-top: 1px solid var(--border); color: var(--muted-text); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.pd-detail-module h3 { font-size: clamp(28px, 3vw, 38px); }
.pd-detail-module p { margin-top: 14px; color: var(--secondary-text); }
.pd-detail-module ul { margin-top: 26px; border-top: 1px solid var(--border); }
.pd-detail-module li { padding: 14px 0; border-bottom: 1px solid var(--border); color: var(--secondary-text); }
.pd-detail-module li::before { content: '→'; margin-right: 12px; color: var(--brand-red-text); }
.pd-detail-thumbs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 12px; }
.pd-detail-thumbs .photo-placeholder { min-height: 180px; }

.pd-before-after { background: var(--bg-secondary); }
.pd-compare { --compare: 50%; position: relative; min-height: 620px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-image); touch-action: pan-y; }
.pd-before, .pd-after { position: absolute; inset: 0; }
.pd-before .photo-placeholder, .pd-after .photo-placeholder { width: 100%; height: 100%; min-height: 0; border: 0; border-radius: 0; }
.pd-after { clip-path: inset(0 0 0 var(--compare)); }
.pd-before-label, .pd-after-label { position: absolute; z-index: 4; top: 18px; padding: 8px 10px; border: 1px solid var(--border); background: color-mix(in oklch, var(--bg) 88%, transparent); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.pd-before-label { left: 18px; }
.pd-after-label { right: 18px; }
.pd-compare-line { position: absolute; z-index: 5; top: 0; bottom: 0; left: var(--compare); width: 1px; background: var(--brand-red); pointer-events: none; }
.pd-compare-line::after { content: '↔'; position: absolute; top: 50%; left: 50%; width: 46px; height: 46px; display: grid; place-items: center; transform: translate(-50%, -50%); border: 1px solid var(--brand-red); border-radius: 50%; background: var(--bg); color: var(--primary-text); }
.pd-compare input[type='range'] { position: absolute; z-index: 6; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize; }

.pd-materials { background: var(--primary-text); color: var(--bg); }
.pd-materials .eyebrow { color: var(--brand-red-deep); }
.pd-materials .lead { color: color-mix(in oklch, var(--bg) 68%, var(--primary-text)); }
.pd-material-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid color-mix(in oklch, var(--bg) 22%, var(--primary-text)); }
.pd-material-grid article { padding: 30px 26px; border-right: 1px solid color-mix(in oklch, var(--bg) 22%, var(--primary-text)); }
.pd-material-grid article:last-child { border-right: 0; }
.pd-material-grid p { margin-top: 12px; color: color-mix(in oklch, var(--bg) 68%, var(--primary-text)); font-size: 14px; }
.pd-finish-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-top: 54px; }
.pd-finish-grid .photo-placeholder { min-height: 190px; border-color: color-mix(in oklch, var(--bg) 22%, var(--primary-text)); background: color-mix(in oklch, var(--bg) 10%, var(--primary-text)); }
.pd-finish-grid .photo-placeholder::before, .pd-finish-grid .photo-placeholder figcaption { color: color-mix(in oklch, var(--bg) 66%, var(--primary-text)); }
.pd-finish-grid h3 { margin-top: 12px; font-size: 15px; }

.pd-install-grid, .pd-packaging-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(340px, .8fr); gap: 28px; align-items: stretch; }
.pd-install-main, .pd-packaging-visual > .photo-placeholder { min-height: 610px; }
.pd-inspection-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.pd-inspection-grid .photo-placeholder { min-height: 238px; }
.pd-inspection-grid h3 { margin-top: 10px; font-size: 14px; }
.pd-install-note { margin-top: 28px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; padding-top: 22px; border-top: 1px solid var(--border); }

.pd-oem { background: var(--bg-secondary); }
.pd-oem .pd-split { grid-template-columns: 44fr 56fr; }
.pd-oem .pd-check-list { margin-top: 28px; font-size: 14px; }
.pd-oem .actions { margin-top: 28px; }

.pd-process-grid { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--border); }
.pd-process-grid::before { content: ''; position: absolute; top: -1px; left: 0; width: 25%; height: 1px; background: var(--brand-red); }
.pd-process-grid article { min-height: 310px; padding: 26px 22px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.pd-process-grid article:nth-child(4n) { border-right: 0; }
.pd-process-grid .number { color: var(--brand-red-text); font-size: 11px; letter-spacing: .1em; }
.pd-process-grid .photo-placeholder { min-height: 150px; margin-top: 20px; }
.pd-process-grid .photo-placeholder::before { display: none; }
.pd-process-grid h3 { margin-top: 16px; font-size: 15px; }

.pd-quality { background: var(--bg-secondary); }
.pd-quality-subtitle { margin-bottom: 18px; color: var(--secondary-text); font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
.pd-quality .pd-check-list { grid-template-columns: 1fr; gap: 0; border-top: 1px solid var(--border); font-size: 15px; }
.pd-quality .pd-check-list li { padding: 16px 0; border-bottom: 1px solid var(--border); }

.pd-packaging-visual { display: grid; grid-template-columns: 1.4fr .6fr; gap: 12px; }
.pd-packaging-visual > div { display: grid; gap: 12px; }
.pd-packaging-visual > div .photo-placeholder { min-height: 0; }
.pd-package-table { align-self: center; border-top: 1px solid var(--border); }
.pd-package-table div { display: grid; grid-template-columns: 42% 58%; padding: 17px 0; border-bottom: 1px solid var(--border); }
.pd-package-table dt { color: var(--muted-text); font-size: 12px; }
.pd-package-table dd { margin: 0; font-size: 14px; }

.pd-projects { background: var(--bg-secondary); }
.pd-project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px 18px; }
.pd-project-grid article { min-width: 0; }
.pd-project-grid .photo-placeholder { min-height: 330px; transition: transform .45s ease, border-color .45s ease; }
.pd-project-grid article:hover .photo-placeholder { transform: scale(1.012); border-color: color-mix(in oklch, var(--brand-red) 42%, var(--border)); }
.pd-project-grid h3 { margin-top: 16px; font-size: 17px; }
.pd-project-grid p { margin-top: 7px; color: var(--secondary-text); font-size: 13px; }
.pd-projects .actions { justify-content: center; }

.pd-why-grid { display: grid; grid-template-columns: 58fr 42fr; gap: 28px; }
.pd-why-photo { min-height: 650px; }
.pd-why-panel { display: grid; grid-template-columns: repeat(2, 1fr); align-content: stretch; border-top: 1px solid var(--border); }
.pd-why-panel article { padding: 28px 22px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.pd-why-panel article:nth-child(even) { border-right: 0; }
.pd-why-panel .number { color: var(--brand-red-text); font-size: 11px; }
.pd-why-panel h3 { margin-top: 18px; font-size: 16px; }
.pd-why-panel p { margin-top: 9px; color: var(--secondary-text); font-size: 13px; }

.pd-faq { background: var(--bg-secondary); }
.pd-faq-grid { display: grid; grid-template-columns: 34fr 66fr; gap: clamp(40px, 6vw, 88px); align-items: start; }
.pd-faq-list { border-top: 1px solid var(--border); }
.pd-faq-list article { border-bottom: 1px solid var(--border); }
.pd-faq-list button { width: 100%; min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 16px 0; border: 0; background: transparent; color: var(--primary-text); text-align: left; font-family: var(--font-heading); font-size: 16px; }
.pd-faq-list button::after { content: '+'; color: var(--brand-red-text); font: 600 22px/1 var(--font-body); }
.pd-faq-list button[aria-expanded='true']::after { content: '−'; }
.pd-faq-list button > span { display: none; }
.pd-faq-list article > div { padding: 0 42px 22px 0; color: var(--secondary-text); font-size: 14px; }

.pd-related-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 14px; }
.pd-related-grid a, .pd-vehicle-grid a { min-width: 0; display: block; }
.pd-related-grid .photo-placeholder { min-height: 220px; transition: transform .45s ease, border-color .45s ease; }
.pd-related-grid a:hover .photo-placeholder, .pd-vehicle-grid a:hover .photo-placeholder { transform: scale(1.012); border-color: color-mix(in oklch, var(--brand-red) 42%, var(--border)); }
.pd-related-grid h3, .pd-vehicle-grid h3 { margin-top: 13px; font-size: 15px; }
.pd-related-grid p { margin-top: 5px; color: var(--muted-text); font-size: 12px; }
.pd-related-grid span { min-height: 44px; display: inline-flex; align-items: center; color: var(--primary-text); font-size: 11px; text-transform: uppercase; }
.pd-vehicle-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.pd-vehicle-grid .photo-placeholder { min-height: 300px; transition: transform .45s ease, border-color .45s ease; }

.pd-rfq { min-height: 680px; display: grid; align-items: center; overflow: hidden; }
.pd-rfq-bg { position: absolute; inset: 0; min-height: 0; border: 0; border-radius: 0; opacity: .58; }
.pd-rfq::after { content: ''; position: absolute; inset: 0; background: color-mix(in oklch, var(--bg) 76%, transparent); }
.pd-rfq-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 42fr 58fr; gap: clamp(42px, 6vw, 90px); align-items: center; }
.pd-rfq-form { padding: clamp(24px, 3vw, 38px); border: 1px solid var(--border); border-radius: 8px; background: color-mix(in oklch, var(--bg-secondary) 94%, transparent); backdrop-filter: blur(10px); }
.pd-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 16px; }
.pd-form-grid label { display: block; margin-bottom: 7px; color: var(--secondary-text); font-size: 11px; }
.pd-form-grid input, .pd-form-grid textarea { width: 100%; min-height: 48px; padding: 12px 13px; border: 1px solid var(--border); border-radius: var(--radius-control); background: var(--bg); color: var(--primary-text); }
.pd-form-grid textarea { min-height: 112px; resize: vertical; }
.pd-form-grid input:hover, .pd-form-grid textarea:hover { border-color: var(--border-strong); }
.pd-form-grid input[aria-invalid='true'], .pd-form-grid textarea[aria-invalid='true'] { border-color: var(--brand-red); }
.pd-form-full { grid-column: 1 / -1; }
.pd-form-grid small { display: block; margin-top: 5px; color: var(--muted-text); }
.pd-field-error { display: block; min-height: 16px; margin-top: 4px; color: var(--brand-red-text); font-size: 11px; }
.pd-form-errors { margin: 16px 0; padding: 14px; border-left: 2px solid var(--brand-red); background: var(--bg); color: var(--secondary-text); font-size: 12px; }
.pd-form-errors ul { margin-top: 5px; }
.pd-form-status { margin-top: 14px; color: var(--secondary-text); font-size: 12px; }
.pd-rfq-form .btn { margin-top: 20px; width: 100%; }

.pd-mobile-cta { display: none; }
.pd-lightbox[hidden] { display: none; }
.pd-lightbox { position: fixed; z-index: 300; inset: 0; display: grid; place-items: center; padding: 24px; background: color-mix(in oklch, var(--bg) 92%, transparent); }
.pd-lightbox > div { position: relative; width: min(1000px, calc(100vw - 48px), calc(100vh - 104px)); }
.pd-lightbox button { position: absolute; z-index: 2; right: 14px; top: 14px; width: 48px; height: 48px; border: 1px solid var(--border); border-radius: 50%; background: var(--bg); color: var(--primary-text); font-size: 24px; }
.pd-lightbox p { margin-bottom: 12px; font-size: 13px; }
.pd-lightbox .photo-placeholder { min-height: min(72vh, 760px); }
.pd-lightbox-media { position: relative; width: 100%; height: auto; aspect-ratio: 1 / 1; display: grid; place-items: center; margin: 0; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-image); background: var(--bg); }
.pd-lightbox-media img { width: 100%; height: 100%; display: block; object-fit: contain; }
.pd-lightbox-media figcaption { position: absolute; left: 18px; bottom: 18px; padding: 8px 10px; border: 1px solid var(--border); background: color-mix(in oklch, var(--bg) 88%, transparent); color: var(--primary-text); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }

@media (max-width: 1180px) {
  .pd-buying-grid { grid-template-columns: minmax(0, 1fr) minmax(370px, .95fr); }
  .pd-purchase-panel h1 { font-size: clamp(38px, 4vw, 50px); }
  .pd-purchase-panel[data-od-id="tank300-purchase-panel"] h1 { font-size: clamp(28px, 2.7vw, 32px); }
  .pd-related-grid { grid-template-columns: repeat(3, 1fr); }
  .pd-trust-bar li { padding-inline: 14px; }
}

@media (max-width: 920px) {
  .product-detail-v2 main { padding-top: 94px; }
  .product-detail-v2 section[id] { scroll-margin-top: 140px; }
  .pd-buying-grid, .pd-split, .pd-kit-grid, .pd-install-grid, .pd-packaging-grid, .pd-why-grid, .pd-faq-grid, .pd-rfq-grid { grid-template-columns: 1fr; }
  .pd-purchase-panel { position: static; }
  .pd-thumbnails { display: flex; overflow-x: auto; padding-bottom: 6px; scroll-snap-type: x proximity; }
  .pd-thumbnails button { flex: 0 0 116px; scroll-snap-align: start; }
  .pd-trust-bar ul { grid-template-columns: repeat(2, 1fr); gap: 0; }
  .pd-trust-bar li { padding: 14px 18px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
  .pd-trust-bar li:first-child { padding-left: 18px; }
  .pd-trust-bar li:nth-child(even) { border-right: 0; }
  .pd-trust-bar li:last-child { grid-column: 1 / -1; border: 0; }
  .pd-anchor-nav { top: 82px; }
  .pd-anchor-nav .btn { display: none; }
  .pd-kit-visual, .pd-large-photo, .pd-install-main, .pd-packaging-visual > .photo-placeholder, .pd-why-photo { min-height: 500px; }
  .pd-fitment-card { grid-template-columns: 1fr; }
  .pd-detail-module, .pd-detail-module:nth-child(even) { grid-template-columns: 1fr; }
  .pd-detail-module:nth-child(even) > :first-child { order: 0; }
  .pd-material-grid { grid-template-columns: 1fr; }
  .pd-material-grid article { border-right: 0; border-bottom: 1px solid color-mix(in oklch, var(--bg) 22%, var(--primary-text)); }
  .pd-finish-grid { grid-template-columns: repeat(3, 1fr); }
  .pd-process-grid { grid-template-columns: repeat(2, 1fr); }
  .pd-process-grid article:nth-child(4n) { border-right: 1px solid var(--border); }
  .pd-process-grid article:nth-child(even) { border-right: 0; }
  .pd-project-grid { grid-template-columns: repeat(2, 1fr); }
  .pd-related-grid { grid-template-columns: repeat(3, 1fr); }
  .pd-vehicle-grid { grid-template-columns: repeat(3, 1fr); }
  .pd-mobile-cta { position: fixed; z-index: 110; left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: 1fr 1.3fr; min-height: 62px; padding: 8px 12px calc(8px + env(safe-area-inset-bottom)); border-top: 1px solid var(--border); background: color-mix(in oklch, var(--bg) 94%, transparent); backdrop-filter: blur(16px); }
  .pd-mobile-cta a { display: grid; place-items: center; border: 1px solid var(--border); color: var(--primary-text); font-size: 12px; font-weight: 600; text-transform: uppercase; }
  .pd-mobile-cta a:last-child { border-color: var(--brand-red-deep); background: var(--brand-red-deep); }
  .product-detail-v2 { padding-bottom: 70px; }
}

@media (max-width: 620px) {
  .pd-buying { padding-bottom: 66px; }
  .pd-breadcrumb { padding-bottom: 18px; }
  .pd-gallery-main { aspect-ratio: 1 / 1; }
  .pd-purchase-panel { padding: 22px 18px; }
  .pd-purchase-panel h1 { font-size: clamp(36px, 11vw, 46px); }
  .pd-purchase-panel[data-od-id="tank300-purchase-panel"] h1 { font-size: clamp(30px, 8.8vw, 36px); }
  .pd-core-specs { grid-template-columns: 1fr 1fr; }
  .pd-lead-time { grid-template-columns: 1fr; }
  .pd-buy-actions { grid-template-columns: 1fr; }
  .pd-buy-actions .pd-fitment-link { grid-column: auto; }
  .pd-trust-bar ul { grid-template-columns: 1fr; }
  .pd-trust-bar li, .pd-trust-bar li:first-child, .pd-trust-bar li:last-child { grid-column: auto; padding: 12px 0; border-right: 0; border-bottom: 1px solid var(--border); }
  .pd-anchor-nav { height: 56px; }
  .pd-parts-list { grid-template-columns: 1fr; }
  .pd-kit-visual, .pd-large-photo, .pd-install-main, .pd-packaging-visual > .photo-placeholder, .pd-why-photo { min-height: 390px; }
  .pd-spec-grid { grid-template-columns: 1fr; }
  .pd-spec-grid div:nth-child(odd) { border-right: 0; }
  .pd-detail-module .photo-placeholder { min-height: 380px; }
  .pd-detail-thumbs { grid-template-columns: 1fr; }
  .pd-compare { min-height: 460px; }
  .pd-finish-grid { display: flex; overflow-x: auto; padding-bottom: 8px; }
  .pd-finish-grid article { flex: 0 0 210px; }
  .pd-inspection-grid { grid-template-columns: 1fr; }
  .pd-process-grid { grid-template-columns: 1fr; }
  .pd-process-grid article, .pd-process-grid article:nth-child(4n) { min-height: 0; border-right: 0; }
  .pd-process-grid article { display: grid; grid-template-columns: 40px 1fr; column-gap: 14px; }
  .pd-process-grid .photo-placeholder { grid-column: 2; min-height: 160px; }
  .pd-process-grid h3 { grid-column: 2; }
  .pd-packaging-visual { grid-template-columns: 1fr; }
  .pd-packaging-visual > div { grid-template-columns: repeat(2, 1fr); }
  .pd-packaging-visual > div .photo-placeholder { min-height: 180px; }
  .pd-project-grid, .pd-related-grid, .pd-vehicle-grid { display: flex; overflow-x: auto; padding-bottom: 12px; scroll-snap-type: x proximity; }
  .pd-project-grid article { flex: 0 0 82%; scroll-snap-align: start; }
  .pd-related-grid a, .pd-vehicle-grid a { flex: 0 0 74%; scroll-snap-align: start; }
  .pd-why-panel { grid-template-columns: 1fr; }
  .pd-why-panel article, .pd-why-panel article:nth-child(even) { border-right: 0; }
  .pd-faq-list button { min-height: 66px; font-size: 15px; }
  .pd-form-grid { grid-template-columns: 1fr; }
  .pd-form-full { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .pd-gallery-main, .pd-project-grid .photo-placeholder, .pd-related-grid .photo-placeholder, .pd-vehicle-grid .photo-placeholder, .pd-red-btn { transition: none; }
}