:root {
  --ink: #161714;
  --paper: #f6f6f3;
  --paper-2: #ecece8;
  --white: #ffffff;
  --muted: #61635d;
  --line: #d9dad4;
  --accent: #f5a000;
  --accent-dark: #b66000;
  --max: 1280px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.skip-link { position: fixed; z-index: 100; top: 12px; left: 12px; padding: 10px 14px; color: var(--ink); background: var(--accent); font-weight: 850; text-decoration: none; transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.section-shell { width: min(var(--max), calc(100% - 48px)); margin-inline: auto; }
.section-block { padding-block: 64px; }
.eyebrow { margin: 0 0 14px; color: var(--accent-dark); font-size: 0.76rem; font-weight: 800; letter-spacing: 0.16em; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { letter-spacing: -0.045em; }
h2 { margin-bottom: 18px; font-size: clamp(2.1rem, 3.7vw, 3.9rem); line-height: 0.98; }
p { color: var(--muted); line-height: 1.65; }

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 max(24px, calc((100vw - var(--max)) / 2));
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.brand { display: inline-flex; width: auto; flex-direction: column; align-items: flex-start; gap: 3px; color: var(--ink); text-decoration: none; }
.brand-word { font-size: 1.75rem; font-weight: 850; letter-spacing: -.055em; line-height: .85; text-transform: uppercase; }
.brand-line { width: 100%; height: 3px; background: var(--accent); }
.brand-mark { display: grid; width: 38px; height: 38px; place-items: center; color: var(--ink); background: var(--accent); clip-path: polygon(0 0, 100% 0, 82% 100%, 0 100%); }
.site-nav { display: flex; align-items: center; gap: 30px; font-size: 0.88rem; font-weight: 700; }
.site-nav a { text-decoration: none; }
.site-nav a:hover { color: var(--accent-dark); }
.nav-cta { display: inline-flex; min-height: 40px; gap: 10px; align-items: center; padding: 0 18px; color: var(--white); background: var(--ink); border: 1px solid var(--ink); font: inherit; cursor: pointer; }
.inquiry-count { display: inline-grid; width: 22px; height: 22px; place-items: center; color: var(--ink); background: var(--accent); border-radius: 50%; font-size: .72rem; }
.menu-toggle { display: none; padding: 10px 12px; color: var(--ink); background: transparent; border: 1px solid var(--line); font: inherit; font-weight: 800; }

.hero { display: grid; grid-template-columns: minmax(0, .9fr) minmax(480px, 1.1fr); align-items: center; gap: clamp(34px, 5vw, 78px); padding-block: 38px 46px; }
.hero h1 { max-width: 760px; margin-bottom: 22px; font-size: clamp(3.1rem, 5.1vw, 5.6rem); line-height: 0.9; text-transform: uppercase; }
.hero h1 span { color: var(--accent-dark); }
.hero-text { max-width: 650px; font-size: 1.03rem; }
.hero-actions, .contact-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 22px; border: 1px solid var(--ink); text-decoration: none; font-size: 0.88rem; font-weight: 850; letter-spacing: 0.02em; transition: transform .2s ease, background .2s ease; }
button.button { font-family: inherit; cursor: pointer; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: var(--ink); background: var(--accent); border-color: var(--accent); }
.button.secondary { background: transparent; }
.hero-panel { position: relative; min-height: 530px; align-self: stretch; overflow: hidden; color: var(--ink); background: var(--white); border: 1px solid var(--line); }
#products { padding-top: 24px; }
.panel-label { margin: 0; color: var(--accent-dark); font-size: .7rem; font-weight: 900; letter-spacing: 0.14em; }
.hero-panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 18px 20px; border-bottom: 1px solid var(--line); }
.hero-panel-heading a { color: var(--ink); font-size: .72rem; font-weight: 850; text-decoration: none; }
.hero-featured-product { position: relative; display: grid; min-height: 330px; place-items: center; overflow: hidden; background: #f0f0ed; border-bottom: 1px solid var(--line); text-decoration: none; }
.hero-featured-product::before { position: absolute; top: 18px; left: 20px; width: 42px; height: 4px; content: ""; background: var(--accent); }
.hero-featured-product img { width: 90%; height: 285px; object-fit: contain; transition: transform .25s ease; }
.hero-featured-product:hover img { transform: scale(1.025); }
.hero-featured-product span { position: absolute; right: 18px; bottom: 16px; left: 18px; color: var(--muted); font-size: .72rem; font-weight: 750; }
.hero-featured-product strong { margin-right: 8px; color: var(--ink); }
.hero-product-thumbs { display: grid; grid-template-columns: 1fr 1fr; min-height: 142px; }
.hero-product-thumbs a { display: grid; grid-template-columns: 108px 1fr; gap: 10px; align-items: center; min-width: 0; padding: 12px; text-decoration: none; }
.hero-product-thumbs a + a { border-left: 1px solid var(--line); }
.hero-product-thumbs img { width: 108px; height: 104px; object-fit: contain; }
.hero-product-thumbs span { font-size: .72rem; font-weight: 850; line-height: 1.3; }
.hero-proof { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin: 28px 0 0; padding: 1px; background: var(--line); list-style: none; }
.hero-proof li { display: grid; min-height: 84px; align-content: center; gap: 4px; padding: 13px; background: var(--white); }
.hero-proof strong { font-size: .84rem; line-height: 1.2; }
.hero-proof span { color: var(--muted); font-size: .69rem; line-height: 1.4; }

.buyer-program { padding-top: 56px; }
.buyer-path-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 34px; }
.buyer-path-card { display: flex; min-height: 335px; padding: 26px; background: var(--white); border: 1px solid var(--line); flex-direction: column; }
.buyer-path-card.featured { color: var(--white); background: var(--ink); border-color: var(--ink); }
.path-number { color: var(--accent-dark); font-size: .7rem; font-weight: 900; letter-spacing: .1em; }
.buyer-path-card.featured .path-number { color: var(--accent); }
.buyer-path-card h3 { max-width: 300px; margin: 38px 0 12px; font-size: clamp(1.45rem, 2.3vw, 2.2rem); line-height: 1.02; letter-spacing: -.03em; }
.buyer-path-card p { font-size: .9rem; }
.buyer-path-card.featured p { color: #c9c5bc; }
.buyer-path-card ul { display: grid; gap: 7px; margin: 14px 0 26px; padding: 0; list-style: none; }
.buyer-path-card li { position: relative; padding-left: 18px; font-size: .76rem; font-weight: 750; line-height: 1.4; }
.buyer-path-card li::before { position: absolute; top: .45em; left: 0; width: 7px; height: 7px; content: ""; background: var(--accent); }
.buyer-path-action { display: inline-flex; width: max-content; max-width: 100%; min-height: 42px; align-items: center; margin-top: auto; padding: 0; color: var(--accent-dark); background: transparent; border: 0; border-bottom: 1px solid currentColor; font: inherit; font-size: .78rem; font-weight: 850; text-align: left; text-decoration: none; cursor: pointer; }
.buyer-path-card.featured .buyer-path-action { color: var(--accent); }

.section-heading { max-width: 850px; }
.section-heading > p:last-child { max-width: 700px; }
.category-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; margin-top: 32px; }
.category-card { position: relative; display: flex; min-height: 196px; padding: 20px; overflow: hidden; color: var(--ink); background: var(--white); border: 1px solid var(--line); cursor: pointer; flex-direction: column; }
.category-card::after { position: absolute; top: 0; right: 0; width: 52px; height: 4px; content: ""; background: var(--accent); }
.category-card:nth-child(even) { color: var(--ink); background: var(--white); border: 1px solid var(--line); }
.category-card:nth-child(even)::after { opacity: 1; }
.category-card .index { color: var(--accent-dark); font-size: .7rem; font-weight: 850; letter-spacing: .14em; }
.category-card h3 { max-width: 220px; margin: 34px 0 9px; font-size: 1.15rem; line-height: 1.08; }
.category-card p { max-width: 260px; color: inherit; opacity: .68; font-size: .78rem; line-height: 1.5; }
.category-card button, .category-card .category-link { position: relative; z-index: 2; padding: 0; color: var(--accent-dark); background: transparent; border: 0; font: inherit; font-size: .72rem; font-weight: 850; cursor: pointer; text-decoration: none; }
.category-card:nth-child(even) button, .category-card:nth-child(even) .category-link { color: var(--accent-dark); }
.category-card small { position: relative; z-index: 2; display: block; color: inherit; opacity: .58; font-size: .7rem; font-weight: 750; line-height: 1.4; text-transform: uppercase; }
.category-trigger { display: flex; width: 100%; align-items: center; justify-content: space-between; gap: 16px; margin-top: auto; padding-top: 18px !important; text-align: left; }
.category-trigger span:last-child { display: grid; width: 26px; height: 26px; flex: 0 0 auto; place-items: center; color: var(--ink); background: var(--accent); font-size: 1rem; }
.category-trigger[aria-expanded="true"] span:last-child { transform: rotate(45deg); }
.category-card.active { box-shadow: inset 0 0 0 2px var(--accent); }
.secondary-category-panels { margin-top: 14px; }
.secondary-category-panel { padding: 24px; background: var(--white); border: 1px solid var(--line); border-top: 5px solid var(--accent); }
.secondary-panel-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 20px; }
.secondary-panel-heading .eyebrow { margin-bottom: 7px; }
.secondary-panel-heading h3 { margin: 0; font-size: clamp(1.5rem, 2.4vw, 2.3rem); }
.secondary-panel-heading > a { color: var(--accent-dark); font-size: .76rem; font-weight: 850; text-decoration: none; }
.secondary-category-links { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.secondary-category-link { display: grid; min-height: 96px; align-content: space-between; gap: 12px; padding: 15px; background: var(--paper); border: 1px solid var(--line); text-decoration: none; }
.secondary-category-link strong { font-size: .9rem; line-height: 1.2; }
.secondary-category-link span { color: var(--accent-dark); font-size: .68rem; font-weight: 800; line-height: 1.35; }
.secondary-category-link.planned { background: transparent; border-style: dashed; }
.secondary-category-link.planned span { color: var(--muted); }
.battery-platform-card { display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px; align-items: end; margin-top: 14px; padding: clamp(28px, 4vw, 44px); color: var(--white); background: var(--ink); border-left: 8px solid var(--accent); }
.battery-platform-card .eyebrow { color: var(--accent); }
.battery-platform-card h3 { max-width: 680px; margin-bottom: 16px; font-size: clamp(2rem, 3.8vw, 4rem); line-height: .98; letter-spacing: -.04em; }
.battery-platform-card p:last-child { margin: 0; color: #bdb9af; }
.platform-actions { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; }
.platform-actions span { padding: 8px 10px; color: #d4d0c6; border: 1px solid rgba(255,255,255,.18); font-size: .72rem; font-weight: 750; }
.platform-actions .button { flex-basis: 100%; margin-top: 12px; cursor: pointer; }

.reviewed-products { margin: 0 auto; border-top: 1px solid var(--line); }
.reviewed-products-header { display: grid; grid-template-columns: minmax(0, 780px); gap: 30px; align-items: end; }
.reviewed-products-header h3 { margin-bottom: 14px; font-size: clamp(1.8rem, 3vw, 3rem); }
.showcase-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 22px; margin-top: 30px; }
.showcase-group { display: flex; min-width: 0; padding: 0; background: transparent; border: 0; flex-direction: column; }
.showcase-group-heading { display: flex; min-height: 54px; align-items: start; justify-content: space-between; gap: 14px; padding: 0 0 13px; border-bottom: 1px solid var(--line); }
.showcase-group-heading > div { display: grid; grid-template-columns: auto 1fr; gap: 8px; align-items: baseline; }
.showcase-group-heading span { color: var(--accent-dark); font-size: .7rem; font-weight: 900; }
.showcase-group-heading h4 { margin: 0; font-size: 1rem; line-height: 1.18; }
.showcase-group-heading > a { flex: 0 0 auto; color: var(--accent-dark); font-size: .66rem; font-weight: 850; text-decoration: none; }
.showcase-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; align-items: stretch; flex: 1; padding-top: 12px; }
.showcase-card { display: flex; min-width: 0; min-height: 430px; height: 100%; overflow: hidden; background: var(--white); border: 1px solid var(--line); flex-direction: column; }
.showcase-card.selected { border-color: var(--accent-dark); box-shadow: inset 0 0 0 1px var(--accent-dark); }
.showcase-media { position: relative; display: block; min-height: 225px; padding: 30px 12px 12px; background: #f0f0ed; border-bottom: 1px solid var(--line); }
.showcase-media > span { position: absolute; top: 10px; left: 10px; color: var(--accent-dark); font-size: .55rem; font-weight: 850; letter-spacing: .04em; }
.showcase-media img { width: 100%; height: 184px; object-fit: contain; }
.showcase-card-body { display: flex; min-height: 0; padding: 14px; flex: 1; flex-direction: column; }
.showcase-card-body > p { margin-bottom: 9px; font-size: .72rem; line-height: 1.45; }
.showcase-card-body .showcase-type { margin-bottom: 7px; color: var(--accent-dark); font-size: .6rem; font-weight: 850; letter-spacing: .04em; line-height: 1.35; text-transform: uppercase; }
.showcase-card h5 { margin: 0 0 8px; font-size: .95rem; line-height: 1.16; }
.showcase-card h5 a { text-decoration: none; }
.showcase-card ul { display: flex; flex-wrap: wrap; gap: 4px; margin: 0 0 12px; padding: 0; list-style: none; }
.showcase-card li { padding: 5px 6px; background: var(--paper-2); font-size: .62rem; font-weight: 750; }
.showcase-actions { display: grid; gap: 7px; margin-top: auto; padding-top: 10px; }
.showcase-actions a, .showcase-actions button { display: inline-flex; min-height: 34px; align-items: center; justify-content: center; padding: 0 9px; font: inherit; font-size: .65rem; font-weight: 850; text-align: center; text-decoration: none; }
.showcase-actions a { color: var(--ink); border: 1px solid var(--ink); }
.showcase-actions button { color: var(--white); background: var(--ink); border: 1px solid var(--ink); cursor: pointer; }
.showcase-actions button[aria-pressed="true"] { color: var(--ink); background: var(--accent); border-color: var(--accent); }
.showcase-reserved { border-style: dashed; }
.showcase-reserved-visual { display: grid; min-height: 150px; align-content: center; gap: 9px; padding: 18px; color: var(--muted); background: var(--paper-2); border-bottom: 1px dashed var(--line); }
.showcase-reserved-visual span { font-size: .58rem; font-weight: 850; letter-spacing: .1em; }
.showcase-reserved-visual strong { color: var(--ink); font-size: 1rem; line-height: 1.2; }
.review-note { display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: start; margin-top: 34px; padding: 18px 20px; background: rgba(242,165,26,.09); border: 1px solid rgba(184,109,0,.22); }
.review-note span { padding: 7px 9px; color: var(--ink); background: var(--accent); font-size: .68rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.review-note p { margin: 0; font-size: .86rem; line-height: 1.55; }
.product-search { display: grid; gap: 10px; color: var(--muted); font-size: .78rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.product-controls { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 12px; }
.product-search input, .product-search select { width: 100%; min-height: 50px; padding: 0 16px; color: var(--ink); background: var(--white); border: 1px solid var(--line); font: inherit; letter-spacing: normal; text-transform: none; }
.product-count { margin: 26px 0 14px; font-size: .85rem; }
.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.product-card { display: grid; grid-template-columns: 170px 1fr; min-height: 310px; overflow: hidden; background: var(--white); border: 1px solid var(--line); transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
.product-card:hover { transform: translateY(-3px); box-shadow: 0 18px 42px rgba(18,18,15,.08); }
.product-card.selected { border-color: var(--accent-dark); box-shadow: inset 0 0 0 1px var(--accent-dark); }
.product-media { position: relative; display: flex; min-height: 100%; padding: 20px; align-items: flex-start; justify-content: space-between; overflow: hidden; color: var(--white); background: var(--ink); flex-direction: column; }
.product-media.with-image { color: var(--ink); background: #f7f6f2; }
.product-media.with-image .product-sku { color: var(--accent-dark); }
.product-media.with-image .image-status { color: #68645c; }
.product-image { position: absolute; inset: 54px 10px 54px; width: calc(100% - 20px); height: calc(100% - 108px); object-fit: contain; }
.product-sku { position: relative; z-index: 2; color: var(--accent); font-size: .7rem; font-weight: 850; letter-spacing: .08em; }
.image-status { position: relative; z-index: 2; max-width: 130px; color: #a6a197; font-size: .67rem; font-weight: 750; line-height: 1.35; letter-spacing: .04em; text-transform: uppercase; }
.product-visual { position: absolute; top: 50%; left: 50%; width: 180px; height: 120px; transform: translate(-46%,-52%) rotate(-8deg); opacity: .92; }
.product-visual i { position: absolute; display: block; }
.visual-body { top: 36px; left: 54px; width: 92px; height: 42px; background: linear-gradient(135deg, #f1ae2d, #c36e00); border-radius: 8px 20px 20px 8px; }
.visual-head { top: 31px; left: 30px; width: 40px; height: 52px; background: #7d7d75; border-radius: 11px 4px 4px 11px; }
.visual-disc { top: 68px; left: 6px; width: 68px; height: 13px; background: #373731; border: 3px solid #c8c5bb; border-radius: 50%; transform: rotate(6deg); }
.visual-handle { top: 5px; left: 47px; width: 15px; height: 60px; background: #34342f; border-radius: 8px; transform: rotate(58deg); transform-origin: bottom; }
.product-card-body { display: flex; padding: 22px; flex-direction: column; }
.product-status { margin-bottom: 8px; color: var(--accent-dark); font-size: .72rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.product-card h4 { margin-bottom: 6px; font-size: 1.35rem; }
.product-model { margin-bottom: 14px; color: var(--ink); font-size: .86rem; font-weight: 800; }
.product-taxonomy { margin: -7px 0 14px; color: var(--muted); font-size: .72rem; font-weight: 750; line-height: 1.4; }
.product-card ul { display: grid; gap: 7px; margin: 0 0 14px; padding: 0; list-style: none; }
.product-card li { position: relative; padding: 0 0 0 15px; color: var(--muted); background: transparent; font-size: .78rem; font-weight: 750; line-height: 1.45; }
.product-card li::before { position: absolute; top: .72em; left: 0; width: 8px; height: 2px; content: ""; background: #aaa; transform: translateY(-50%); }
.product-card-body > p:last-of-type { font-size: .88rem; }
.product-actions { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 10px 12px; align-items: center; margin-top: auto; padding-top: 14px; }
.product-actions a { display: inline-flex; color: var(--accent-dark); font-size: .78rem; font-weight: 850; text-decoration: none; }
.product-actions .view-product { grid-column: 1 / -1; width: max-content; max-width: 100%; }
.product-actions .select-product { grid-column: 1; }
.product-actions a:not(.view-product) { grid-column: 2; justify-self: start; }
.select-product, .view-product { min-height: 40px; padding: 0 14px; color: var(--white); background: var(--ink); border: 1px solid var(--ink); font: inherit; font-size: .76rem; font-weight: 850; cursor: pointer; }
.view-product { display: inline-flex; align-items: center; color: var(--ink); background: transparent; text-decoration: none; }
.selected .select-product { color: var(--ink); background: var(--accent); border-color: var(--accent); }
.product-empty { grid-column: 1 / -1; padding: 26px; background: var(--white); border: 1px solid var(--line); }
.browse-catalog-actions { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; justify-content: space-between; margin-top: 30px; padding-top: 26px; border-top: 1px solid var(--line); }
.browse-catalog-actions p { margin: 0; font-size: .8rem; font-weight: 750; }

.capabilities { color: var(--white); background: #171713; }
.capabilities .eyebrow { color: var(--accent); }
.capabilities p { color: #bdb9af; }
.split-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; }
.process-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.14); }
.process-grid article { min-height: 205px; padding: 26px; background: #171713; }
.process-grid span { color: var(--accent); font-size: .78rem; font-weight: 900; }
.process-grid h3 { margin: 42px 0 9px; font-size: 1.3rem; }
.process-grid p { margin-bottom: 0; font-size: .92rem; }

.oem-quality .section-heading { max-width: 980px; }
.program-board { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 34px; }
.program-board > article { padding: clamp(24px, 3vw, 38px); background: var(--white); border: 1px solid var(--line); }
.program-board > article:last-child { color: var(--white); background: var(--ink); border-color: var(--ink); }
.board-label { margin-bottom: 12px; color: var(--accent-dark); font-size: .7rem; font-weight: 900; letter-spacing: .12em; }
.program-board > article:last-child .board-label { color: var(--accent); }
.program-board h3 { max-width: 480px; margin: 0 0 30px; font-size: clamp(1.6rem, 2.6vw, 2.5rem); line-height: 1.04; letter-spacing: -.03em; }
.board-steps { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.program-board > article:last-child .board-steps { border-color: rgba(255,255,255,.16); }
.board-steps li { display: grid; grid-template-columns: 38px 1fr; gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.program-board > article:last-child .board-steps li { border-color: rgba(255,255,255,.16); }
.board-steps li > span { color: var(--accent-dark); font-size: .72rem; font-weight: 900; }
.program-board > article:last-child .board-steps li > span { color: var(--accent); }
.board-steps strong { display: block; margin-bottom: 5px; font-size: .92rem; }
.board-steps p { margin: 0; font-size: .8rem; line-height: 1.5; }
.program-board > article:last-child .board-steps p { color: #bdb9af; }
.scope-note { margin: 14px 0 0; padding: 17px 20px; background: rgba(242,165,26,.09); border-left: 4px solid var(--accent); font-size: .8rem; }

.about-card { display: grid; grid-template-columns: .85fr 1.15fr; gap: 48px; padding: clamp(30px, 4vw, 54px); background: var(--white); border: 1px solid var(--line); }
.about-copy { columns: 2; column-gap: 40px; }
.about-copy p { break-inside: avoid; }

.resources { background: var(--paper-2); border-block: 1px solid var(--line); }
.resource-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin-top: 34px; padding: 1px; background: rgba(18,18,15,.18); }
.resource-grid article { display: flex; min-height: 300px; padding: 24px; background: var(--paper); flex-direction: column; }
.resource-grid article > span { color: var(--accent-dark); font-size: .7rem; font-weight: 900; letter-spacing: .1em; }
.resource-grid h3 { margin: 52px 0 12px; font-size: 1.28rem; line-height: 1.08; }
.resource-grid p { font-size: .82rem; }
.resource-request { width: max-content; max-width: 100%; margin-top: auto; padding: 9px 0; color: var(--accent-dark); background: transparent; border: 0; border-bottom: 1px solid currentColor; font: inherit; font-size: .74rem; font-weight: 850; text-align: left; cursor: pointer; }

.faq { background: var(--paper-2); border-top: 1px solid var(--line); }
.faq-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: start; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 19px 48px 19px 0; font-size: 1.02rem; font-weight: 800; line-height: 1.35; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { position: absolute; top: 18px; right: 6px; content: "+"; color: var(--accent-dark); font-size: 1.35rem; font-weight: 500; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 720px; margin: -4px 48px 24px 0; }

.contact { color: var(--white); background: var(--ink); }
.contact-inner { display: grid; grid-template-columns: 1fr .8fr; gap: 56px; align-items: end; }
.contact .eyebrow { color: var(--accent); }
.contact p { color: #bdb9af; }
.contact .button.secondary { color: var(--white); border-color: rgba(255,255,255,.38); }
.contact-inquiry { cursor: pointer; font: inherit; }
.contact-actions { align-items: flex-start; }
.contact-actions p { flex-basis: 100%; margin-top: 18px; font-size: .88rem; }
.site-footer { display: flex; justify-content: space-between; gap: 24px; padding-block: 32px; font-size: .82rem; }
.site-footer p { margin: 0; }

.reveal,
.js-enhanced .reveal,
.js-enhanced .reveal.visible { opacity: 1; transform: none; }

.product-dialog { width: min(920px, calc(100% - 32px)); max-height: min(820px, calc(100vh - 40px)); padding: 0; overflow: auto; color: var(--ink); background: var(--paper); border: 0; box-shadow: 0 30px 100px rgba(0,0,0,.32); }
.product-dialog::backdrop { background: rgba(18,18,15,.66); backdrop-filter: blur(4px); }
.product-dialog-close { position: sticky; z-index: 3; top: 18px; float: right; margin: 18px 18px -60px 0; padding: 10px 12px; color: var(--white); background: rgba(18,18,15,.88); border: 1px solid rgba(255,255,255,.25); font: inherit; font-size: .76rem; font-weight: 850; cursor: pointer; }
.product-dialog-layout { display: grid; grid-template-columns: .42fr .58fr; min-height: 650px; }
.product-dialog-media { position: relative; display: flex; min-height: 100%; padding: 34px; overflow: hidden; color: var(--white); background: var(--ink); flex-direction: column; justify-content: space-between; }
.product-dialog-media.with-image { color: var(--ink); background: #f7f6f2; }
.product-dialog-media.with-image > span { color: var(--accent-dark); }
.product-dialog-media.with-image > p { color: #68645c; }
.product-dialog-media > span { position: relative; z-index: 2; color: var(--accent); font-size: .72rem; font-weight: 850; letter-spacing: .08em; }
.product-dialog-media > p { position: relative; z-index: 2; max-width: 230px; margin: 0; color: #aaa69c; font-size: .76rem; line-height: 1.5; text-transform: uppercase; }
.product-dialog-visual { position: absolute; inset: 50% auto auto 50%; width: 300px; height: 220px; transform: translate(-50%,-50%) scale(1.45); }
.product-dialog-visual .product-visual { top: 50%; }
.product-dialog-image { width: 100%; height: 100%; object-fit: contain; }
.product-dialog-copy { padding: clamp(34px, 6vw, 66px); }
.product-dialog-copy h2 { margin-bottom: 12px; font-size: clamp(2.4rem, 5vw, 4.5rem); }
.dialog-model { color: var(--ink); font-size: .9rem; font-weight: 800; }
.product-facts { display: grid; grid-template-columns: 1fr 1fr; margin: 32px 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.product-facts div { padding: 18px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.product-facts dt { margin-bottom: 8px; color: var(--muted); font-size: .68rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.product-facts dd { margin: 0; font-size: .92rem; font-weight: 800; }
.configuration-note { padding: 18px; background: var(--paper-2); border-left: 4px solid var(--accent); }
.configuration-note strong { font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; }
.configuration-note p { margin: 7px 0 0; font-size: .8rem; line-height: 1.55; }
.product-dialog-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.product-dialog-actions .button { cursor: pointer; }

.inquiry-visible { overflow: hidden; }
.inquiry-backdrop { position: fixed; z-index: 40; inset: 0; background: rgba(18,18,15,.58); backdrop-filter: blur(3px); }
.inquiry-drawer { position: fixed; z-index: 50; top: 0; right: 0; bottom: 0; width: min(680px, 100%); padding: 34px; overflow-y: auto; background: var(--paper); box-shadow: -24px 0 80px rgba(0,0,0,.22); transform: translateX(104%); transition: transform .28s ease; }
.inquiry-drawer.open { transform: translateX(0); }
.inquiry-header { display: flex; justify-content: space-between; gap: 24px; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.inquiry-header h2 { max-width: 500px; margin: 0; font-size: clamp(2rem, 5vw, 3.8rem); }
.inquiry-close { align-self: flex-start; padding: 10px 12px; color: var(--ink); background: transparent; border: 1px solid var(--line); font: inherit; font-size: .8rem; font-weight: 850; cursor: pointer; }
.inquiry-empty { padding: 70px 0; }
.inquiry-empty strong { display: block; margin-bottom: 10px; font-size: 1.4rem; }
.text-button { padding: 0; color: var(--accent-dark); background: transparent; border: 0; font: inherit; font-size: .82rem; font-weight: 850; cursor: pointer; }
.inquiry-selection { padding: 30px 0; border-bottom: 1px solid var(--line); }
.inquiry-selection-heading { display: flex; justify-content: space-between; gap: 20px; margin-bottom: 16px; }
.inquiry-selection ul { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.inquiry-selection li { display: flex; justify-content: space-between; gap: 16px; padding: 15px; background: var(--white); border: 1px solid var(--line); }
.inquiry-selection li div { display: grid; gap: 5px; }
.inquiry-selection li span { color: var(--muted); font-size: .78rem; }
.inquiry-selection li .inquiry-item-facts { color: var(--ink); font-size: .7rem; font-weight: 750; }
.inquiry-selection li button { align-self: center; padding: 8px; color: var(--muted); background: transparent; border: 0; font: inherit; font-size: .72rem; font-weight: 800; cursor: pointer; }
.inquiry-form { display: grid; gap: 18px; padding: 30px 0; }
.inquiry-form-fields { display: grid; gap: 18px; }
.inquiry-intro { display: grid; gap: 4px; margin: 0; padding: 15px 16px; color: var(--muted); background: var(--white); border-left: 3px solid var(--accent); font-size: .84rem; line-height: 1.5; }
.inquiry-intro strong { color: var(--ink); font-size: .95rem; }
.field-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.inquiry-form label { display: grid; gap: 8px; color: var(--ink); font-size: .76rem; font-weight: 850; letter-spacing: .05em; text-transform: uppercase; }
.inquiry-form label em { color: var(--muted); font-size: .68rem; font-style: normal; font-weight: 650; letter-spacing: normal; text-transform: none; }
.inquiry-form input, .inquiry-form select, .inquiry-form textarea { width: 100%; padding: 14px 15px; color: var(--ink); background: var(--white); border: 1px solid var(--line); border-radius: 0; font: inherit; font-size: .95rem; letter-spacing: normal; text-transform: none; }
.inquiry-form input, .inquiry-form select { min-height: 50px; }
.inquiry-form textarea { resize: vertical; }
.inquiry-form input:focus, .inquiry-form select:focus, .inquiry-form textarea:focus, .product-search input:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.inquiry-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 16px; margin: 0; padding: 18px; background: var(--white); border: 1px solid var(--line); }
.inquiry-options legend { padding: 0 8px; color: var(--ink); font-size: .76rem; font-weight: 850; letter-spacing: .05em; text-transform: uppercase; }
.inquiry-options label { display: flex; grid-template-columns: none; gap: 9px; align-items: flex-start; color: var(--ink); font-size: .76rem; font-weight: 700; letter-spacing: normal; line-height: 1.35; text-transform: none; }
.inquiry-options input { width: 16px; height: 16px; min-height: 0; flex: 0 0 auto; margin: 1px 0 0; padding: 0; accent-color: var(--accent-dark); }
.inquiry-more { border: 1px solid var(--line); background: var(--white); }
.inquiry-more summary { display: flex; justify-content: space-between; gap: 12px; padding: 15px; color: var(--ink); font-size: .78rem; font-weight: 850; letter-spacing: .05em; text-transform: uppercase; cursor: pointer; }
.inquiry-more summary span { color: var(--muted); font-size: .7rem; font-weight: 650; letter-spacing: normal; text-transform: none; }
.inquiry-more-content { display: grid; gap: 18px; padding: 2px 15px 18px; }
.form-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.inquiry-form .button { justify-self: start; cursor: pointer; }
.inquiry-form .button:disabled { cursor: wait; opacity: .65; }
.inquiry-form .button.secondary { color: var(--ink); background: transparent; }
.form-status { min-height: 1.3em; margin: -4px 0 0; color: var(--muted); font-size: .8rem; font-weight: 700; line-height: 1.5; }
.form-status:empty { display: none; }
.form-status.is-error { padding: 12px 14px; color: #7a2018; background: #fff2ef; border-left: 3px solid #b83c2d; }
.form-note { max-width: 470px; margin: -4px 0 0; color: var(--muted); font-size: .75rem; line-height: 1.5; }
.form-note a { color: inherit; font-weight: 800; }
.inquiry-trap { position: absolute !important; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.inquiry-success { padding: 72px 0 54px; }
.inquiry-success-mark { display: grid; width: 58px; height: 58px; margin-bottom: 24px; place-items: center; color: #fff; background: #1f6b50; border-radius: 50%; font-size: 1.7rem; font-weight: 900; }
.inquiry-success h3 { max-width: 500px; margin: 8px 0 14px; font-size: clamp(1.8rem, 4vw, 2.7rem); line-height: 1.08; }
.inquiry-success h3:focus { outline: none; }
.inquiry-success p:not(.eyebrow) { max-width: 440px; margin: 0 0 28px; color: var(--muted); line-height: 1.6; }

@media (max-width: 1100px) {
  .site-nav { gap: 18px; }
  .hero-proof { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .secondary-category-links { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .showcase-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .resource-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .section-block { padding-block: 62px; }
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: 72px; right: 0; left: 0; display: none; align-items: stretch; padding: 20px 24px; background: var(--white); border-bottom: 1px solid var(--line); flex-direction: column; }
  .site-nav.open { display: flex; }
  .hero, .split-layout, .about-card, .contact-inner, .faq-layout, .battery-platform-card, .program-board { grid-template-columns: 1fr; }
  .hero { min-height: auto; gap: 30px; }
  .hero-panel { min-height: 520px; }
  .buyer-path-grid { grid-template-columns: 1fr; }
  .buyer-path-card { min-height: 330px; }
  .secondary-category-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .reviewed-products-header, .product-controls { grid-template-columns: 1fr; }
  .product-card { grid-template-columns: 160px 1fr; }
  .product-dialog-layout { grid-template-columns: 1fr; }
  .product-dialog-media { min-height: 280px; }
  .product-dialog-visual { transform: translate(-50%,-50%) scale(1.2); }
  .about-copy { columns: 1; }
}

@media (max-width: 580px) {
  .section-shell { width: min(100% - 28px, var(--max)); }
  .hero h1 { font-size: clamp(2.7rem, 13vw, 3.8rem); }
  .hero-panel { min-height: 510px; }
  .hero-product-thumbs a { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .hero-product-thumbs img { width: 100%; height: 86px; }
  .hero-proof, .resource-grid { grid-template-columns: 1fr; }
  .category-grid, .process-grid { grid-template-columns: 1fr; }
  .secondary-panel-heading { align-items: start; flex-direction: column; }
  .secondary-category-links, .showcase-grid, .showcase-pair { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .product-card { grid-template-columns: 1fr; }
  .product-media { min-height: 190px; }
  .product-actions { grid-template-columns: 1fr; }
  .product-actions .view-product, .product-actions .select-product, .product-actions a:not(.view-product) { grid-column: 1; justify-self: start; }
  .product-dialog { width: calc(100% - 18px); max-height: calc(100vh - 18px); }
  .product-dialog-copy { padding: 34px 22px; }
  .product-facts { grid-template-columns: 1fr; }
  .review-note, .field-pair, .inquiry-options { grid-template-columns: 1fr; }
  .inquiry-drawer { padding: 24px 20px; }
  .category-card { min-height: 235px; }
  .category-card h3 { margin-top: 48px; }
  .site-footer { flex-direction: column; }
}

/* Phase 3 batch 03: product masters use a pure-white studio background. */
.product-media.with-image, .product-dialog-media.with-image, .detail-media, .variant-table img, .hero-featured-product { background: #fff; }