:root {
  --ink: #182327;
  --ink-soft: #425159;
  --muted: #68767d;
  --line: #d9e0e3;
  --line-strong: #aebbc1;
  --paper: #f4f6f7;
  --surface: #ffffff;
  --surface-soft: #eaf0f2;
  --navy: #132b35;
  --navy-soft: #1c3a46;
  --accent: #0b6675;
  --accent-hover: #084f5b;
  --accent-soft: #dcecef;
  --danger: #a12f2f;
  --success: #286a4b;
  --shadow-sm: 0 10px 28px rgba(24, 35, 39, .08);
  --shadow-lg: 0 28px 70px rgba(24, 35, 39, .14);
  --radius-card: 14px;
  --radius-control: 7px;
  --max-width: 1280px;
  --font-display: "Aptos Display", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Aptos", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --ease: cubic-bezier(.16, 1, .3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #dce1e3; font: 400 16px/1.6 var(--font-body); -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3, p, dl, figure { margin-top: 0; }
h1, h2, h3 { color: var(--ink); font-family: var(--font-display); font-weight: 680; letter-spacing: -.035em; }
h1 { max-width: 16ch; margin-bottom: 24px; font-size: clamp(3.35rem, 5.5vw, 5.2rem); line-height: .98; }
h2 { max-width: 18ch; margin-bottom: 20px; font-size: clamp(2.25rem, 3.7vw, 3.65rem); line-height: 1.03; }
h3 { margin-bottom: 12px; font-size: clamp(1.35rem, 2vw, 1.8rem); line-height: 1.12; }

:focus-visible { outline: 3px solid #62aab6; outline-offset: 3px; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 1000; transform: translateY(-140%); padding: 10px 14px; border-radius: var(--radius-control); background: var(--ink); color: #fff; }
.skip-link:focus { transform: translateY(0); }

.review-bar { position: sticky; top: 0; z-index: 100; min-height: 52px; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 7px 20px; border-bottom: 1px solid #314148; background: #10191d; color: #f2f5f6; }
.review-bar > div:first-child { display: flex; align-items: baseline; gap: 12px; }
.review-bar strong { font-size: 13px; letter-spacing: .02em; }
.review-bar span { color: #aeb9be; font-size: 12px; }
.viewport-switch { display: flex; overflow: hidden; border: 1px solid #506169; border-radius: 6px; }
.viewport-btn { min-width: 80px; min-height: 34px; border: 0; border-right: 1px solid #506169; background: transparent; color: #c7d0d4; cursor: pointer; font-size: 12px; font-weight: 650; }
.viewport-btn:last-child { border-right: 0; }
.viewport-btn.is-active { background: #f4f6f7; color: var(--ink); }

.preview-shell { padding: 22px; overflow-x: auto; }
.site-frame { position: relative; width: min(1480px, 100%); min-height: calc(100dvh - 96px); margin: 0 auto; overflow: hidden; background: var(--paper); box-shadow: var(--shadow-lg); transition: width .3s var(--ease); }
.preview-shell.mobile-mode .site-frame { width: 390px; }

.site-header { position: relative; z-index: 30; min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 0 clamp(24px, 5vw, 72px); border-bottom: 1px solid rgba(174, 187, 193, .7); background: rgba(244, 246, 247, .94); backdrop-filter: blur(16px); }
.wordmark { display: inline-grid; gap: 1px; color: var(--ink); }
.wordmark-name { font-family: var(--font-display); font-size: 23px; font-weight: 760; letter-spacing: .16em; line-height: 1; }
.wordmark-line { color: var(--muted); font-size: 8px; font-weight: 700; letter-spacing: .2em; }
.main-nav { display: flex; align-items: center; gap: 30px; }
.main-nav > a { position: relative; min-height: 44px; display: inline-flex; align-items: center; color: var(--ink-soft); font-size: 14px; font-weight: 650; }
.main-nav > a:not(.nav-cta)::after { content: ""; position: absolute; right: 0; bottom: 5px; left: 0; height: 2px; transform: scaleX(0); transform-origin: right; background: var(--accent); transition: transform .25s var(--ease); }
.main-nav > a:hover::after, .main-nav > a.is-active::after { transform: scaleX(1); transform-origin: left; }
.main-nav .nav-cta { min-height: 42px; padding: 0 17px; border-radius: var(--radius-control); background: var(--accent); color: #fff; transition: background .2s ease, transform .2s ease; }
.main-nav .nav-cta:hover { background: var(--accent-hover); transform: translateY(-1px); }
.menu-toggle { display: none; min-height: 44px; align-items: center; gap: 10px; border: 1px solid var(--line-strong); border-radius: var(--radius-control); padding: 0 13px; background: var(--surface); cursor: pointer; font-weight: 650; }
.menu-toggle i, .menu-toggle i::before, .menu-toggle i::after { width: 16px; height: 1.5px; display: block; background: currentColor; transition: transform .2s ease, opacity .2s ease; }
.menu-toggle i { position: relative; }
.menu-toggle i::before, .menu-toggle i::after { content: ""; position: absolute; left: 0; }
.menu-toggle i::before { top: -5px; }
.menu-toggle i::after { top: 5px; }
.menu-toggle[aria-expanded="true"] i { background: transparent; }
.menu-toggle[aria-expanded="true"] i::before { top: 0; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] i::after { top: 0; transform: rotate(-45deg); }

.page { display: none; }
.page.is-active { display: block; }
.section-pad { padding: clamp(72px, 8vw, 120px) clamp(24px, 5vw, 72px); }
.compact-pad { padding-top: 22px; padding-bottom: 22px; }
.section-heading { max-width: 760px; margin-bottom: clamp(38px, 5vw, 64px); }
.section-heading > p:last-child { max-width: 62ch; color: var(--muted); font-size: 18px; }
.eyebrow { margin-bottom: 16px; color: var(--accent); font-size: 11px; font-weight: 760; letter-spacing: .15em; text-transform: uppercase; }
.lead { max-width: 58ch; color: var(--ink-soft); font-size: clamp(1.08rem, 1.5vw, 1.25rem); line-height: 1.55; }
.fine-print, .disclaimer { color: var(--muted); font-size: 13px; }

.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid transparent; border-radius: var(--radius-control); padding: 0 20px; cursor: pointer; font-size: 14px; font-weight: 720; line-height: 1; white-space: nowrap; transition: transform .2s var(--ease), background .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease; }
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0) scale(.98); }
.button-primary { background: var(--accent); color: #fff; box-shadow: 0 10px 24px rgba(11, 102, 117, .2); }
.button-primary:hover { background: var(--accent-hover); box-shadow: 0 14px 28px rgba(11, 102, 117, .26); }
.button-secondary { border-color: var(--line-strong); background: var(--surface); color: var(--ink); }
.button-secondary:hover { border-color: var(--ink); }
.button-light { background: #f5f8f9; color: var(--navy); }
.button-quiet { border-color: var(--line-strong); background: transparent; color: var(--ink); }
.action-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.text-action { position: relative; border: 0; background: transparent; padding: 5px 0 4px; color: var(--accent); cursor: pointer; font-size: 14px; font-weight: 720; text-align: left; }
.text-action::after { content: ""; position: absolute; right: 0; bottom: 0; left: 0; height: 1px; transform: scaleX(.35); transform-origin: left; background: currentColor; transition: transform .22s var(--ease); }
.text-action:hover::after { transform: scaleX(1); }

.home-hero { min-height: min(760px, calc(100dvh - 124px)); display: grid; grid-template-columns: minmax(0, .9fr) minmax(460px, 1.1fr); gap: clamp(48px, 7vw, 112px); align-items: center; }
.home-hero .lead { max-width: 55ch; }
.hero-visual { position: relative; min-height: 540px; }
.hero-product { position: absolute; overflow: hidden; border-radius: var(--radius-card); background: var(--surface); box-shadow: var(--shadow-lg); }
.hero-product img { width: 100%; height: 100%; object-fit: contain; }
.hero-product figcaption { position: absolute; right: 0; bottom: 0; left: 0; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 16px; border-top: 1px solid rgba(217, 224, 227, .85); background: rgba(255, 255, 255, .9); backdrop-filter: blur(12px); }
.hero-product figcaption span { color: var(--muted); font-size: 12px; }
.hero-product figcaption strong { font-family: var(--font-display); letter-spacing: -.01em; }
.hero-product-main { inset: 0 18% 6% 0; background: #e9eff1; }
.hero-product-main img { padding: clamp(28px, 5vw, 58px); }
.hero-product-side { right: 0; bottom: 0; width: 43%; height: 42%; border: 8px solid var(--paper); }
.hero-product-side img { padding: 12px; background: #fff; }

.buyer-strip { max-width: var(--max-width); display: grid; grid-template-columns: repeat(3, 1fr); margin: 0 auto; padding: 0 clamp(24px, 5vw, 72px); }
.buyer-strip div { min-height: 102px; display: grid; align-content: center; gap: 5px; border-top: 1px solid var(--line-strong); }
.buyer-strip div + div { padding-left: 32px; border-left: 1px solid var(--line); }
.buyer-strip span { color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.buyer-strip strong { font-family: var(--font-display); font-size: 18px; }

.product-section { max-width: var(--max-width); margin: 0 auto; }
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.product-card { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-card); background: var(--surface); transition: transform .3s var(--ease), border-color .3s ease, box-shadow .3s ease; }
.product-card:hover { transform: translateY(-5px); border-color: var(--line-strong); box-shadow: var(--shadow-sm); }
.product-card.is-featured { grid-column: span 2; display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(280px, .88fr); }
.product-image { height: 265px; overflow: hidden; background: #eef2f3; }
.product-image img { width: 100%; height: 100%; padding: 22px; object-fit: contain; transition: transform .45s var(--ease); }
.product-card:hover .product-image img { transform: scale(1.035); }
.product-image-dark { min-height: 100%; background: var(--navy); }
.product-image-dark img { padding: 40px; filter: drop-shadow(0 20px 24px rgba(0, 0, 0, .18)); }
.product-body { min-height: 260px; display: flex; flex-direction: column; align-items: flex-start; padding: 24px; }
.product-card.is-featured .product-body { min-height: 380px; padding: 34px; }
.product-brand { min-height: 28px; display: flex; align-items: center; gap: 11px; margin-bottom: 24px; }
.product-brand img { width: 56px; max-height: 22px; object-fit: contain; object-position: left center; }
.product-brand.dongcheng img { width: 78px; }
.product-brand span { color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; }
.product-body h3 { margin-bottom: 12px; font-size: 29px; }
.product-body > p { color: var(--muted); }
.product-body > .text-action { margin-top: auto; }
.card-actions { width: 100%; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 18px; margin-top: auto; }
.mini-specs { width: 100%; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 12px 0 26px; }
.mini-specs div { display: grid; gap: 3px; }
.mini-specs dt { color: var(--muted); font-size: 11px; }
.mini-specs dd { margin: 0; font-family: var(--font-display); font-size: 17px; font-weight: 700; }

.sourcing-section { background: #e8edef; }
.sourcing-section > * { max-width: var(--max-width); margin-right: auto; margin-left: auto; }
.sourcing-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 18px; }
.sourcing-panel { min-height: 390px; display: flex; flex-direction: column; align-items: flex-start; border: 1px solid var(--line); border-radius: var(--radius-card); padding: clamp(30px, 4vw, 54px); background: var(--surface); }
.sourcing-panel > span { color: var(--accent); font-size: 12px; font-weight: 720; letter-spacing: .09em; text-transform: uppercase; }
.sourcing-panel h3 { max-width: 15ch; margin-top: auto; font-size: clamp(2rem, 3vw, 2.8rem); }
.sourcing-panel p { max-width: 48ch; color: var(--muted); }
.sourcing-panel .button { margin-top: 18px; }
.sourcing-panel-accent { background: var(--navy); color: #eaf1f3; }
.sourcing-panel-accent h3 { color: #f5f8f9; }
.sourcing-panel-accent p, .sourcing-panel-accent > span { color: #b9c9cf; }

.evidence-section { max-width: var(--max-width); display: grid; grid-template-columns: .72fr 1.28fr; gap: clamp(50px, 7vw, 100px); align-items: center; margin: 0 auto; }
.evidence-copy > p:not(.eyebrow) { max-width: 50ch; color: var(--muted); font-size: 17px; }
.plain-checks { display: grid; gap: 0; margin: 28px 0 0; padding: 0; border-top: 1px solid var(--line-strong); list-style: none; }
.plain-checks li { position: relative; padding: 15px 0 15px 28px; border-bottom: 1px solid var(--line); color: var(--ink-soft); }
.plain-checks li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 800; }
.evidence-gallery { display: grid; grid-template-columns: 1.35fr .65fr; grid-template-rows: 1fr 1fr; gap: 12px; }
.evidence-gallery figure { position: relative; min-height: 210px; margin: 0; overflow: hidden; border-radius: var(--radius-card); background: var(--surface); }
.evidence-gallery .evidence-large { grid-row: 1 / 3; min-height: 520px; }
.evidence-gallery img { width: 100%; height: 100%; object-fit: cover; }
.evidence-gallery figcaption { position: absolute; right: 10px; bottom: 10px; left: 10px; display: grid; padding: 11px 13px; border-radius: var(--radius-control); background: rgba(19, 43, 53, .88); color: #fff; backdrop-filter: blur(10px); }
.evidence-gallery figcaption strong { font-size: 13px; }
.evidence-gallery figcaption span { color: #c8d4d8; font-size: 11px; }

.capability-section { background: var(--surface); }
.capability-section > * { max-width: var(--max-width); margin-right: auto; margin-left: auto; }
.capability-list { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line-strong); }
.capability-list article { min-height: 190px; display: grid; grid-template-columns: 48px 1fr; gap: 20px; padding: 30px 28px 30px 0; border-bottom: 1px solid var(--line); }
.capability-list article:nth-child(odd) { padding-right: 42px; border-right: 1px solid var(--line); }
.capability-list article:nth-child(even) { padding-left: 42px; }
.capability-list > article > span { color: var(--accent); font-size: 12px; font-weight: 760; }
.capability-list h3 { font-size: 23px; }
.capability-list p { max-width: 48ch; margin: 0; color: var(--muted); }

.warranty-section { max-width: var(--max-width); display: grid; grid-template-columns: .82fr 1.18fr; gap: clamp(48px, 8vw, 110px); align-items: start; margin: 0 auto; }
.warranty-heading > p:last-child { max-width: 52ch; color: var(--muted); }
.warranty-metrics { margin: 0; border-top: 1px solid var(--line-strong); }
.warranty-metrics div { display: grid; grid-template-columns: .8fr 1.2fr; gap: 28px; align-items: baseline; padding: 24px 0; border-bottom: 1px solid var(--line); }
.warranty-metrics dt { color: var(--muted); }
.warranty-metrics dd { margin: 0; font-family: var(--font-display); font-size: clamp(1.25rem, 2.2vw, 1.85rem); font-weight: 680; line-height: 1.2; }

.final-cta { max-width: calc(var(--max-width) - 144px); display: flex; align-items: center; justify-content: space-between; gap: 48px; margin: 0 auto 96px; border-radius: var(--radius-card); background: var(--navy); color: #dce8eb; }
.final-cta h2 { color: #f5f8f9; }
.final-cta > div > p:last-child { max-width: 58ch; margin-bottom: 0; color: #b8c8ce; }

.breadcrumbs { max-width: var(--max-width); display: flex; gap: 10px; margin: 0 auto; color: var(--muted); font-size: 13px; }
.breadcrumbs a { color: var(--accent); font-weight: 700; }
.product-hero { max-width: var(--max-width); min-height: 660px; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(380px, .92fr); gap: clamp(48px, 7vw, 100px); align-items: center; margin: 0 auto; }
.product-gallery { position: relative; min-height: 560px; }
.gallery-main { position: absolute; inset: 0 13% 8% 0; display: grid; place-items: center; overflow: hidden; border-radius: var(--radius-card); background: #e6edef; }
.gallery-main img { width: 100%; height: 100%; padding: 48px; object-fit: contain; }
.gallery-detail { position: absolute; right: 0; bottom: 0; width: 34%; height: 39%; overflow: hidden; border: 8px solid var(--paper); border-radius: var(--radius-card); background: var(--surface); box-shadow: var(--shadow-sm); }
.gallery-detail img { width: 100%; height: 100%; object-fit: cover; }
.gallery-detail figcaption { position: absolute; right: 0; bottom: 0; left: 0; padding: 9px; background: rgba(19, 43, 53, .86); color: #fff; font-size: 11px; }
.product-gallery.has-no-evidence .gallery-main { inset: 0; }
.product-summary h1 { font-size: clamp(3rem, 5vw, 4.9rem); }
.product-brand-large img { width: 74px; max-height: 28px; }
.hero-specs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 32px 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-control); background: var(--line); }
.hero-specs div { min-height: 98px; display: grid; align-content: space-between; gap: 8px; padding: 16px; background: var(--surface); }
.hero-specs dt { color: var(--muted); font-size: 11px; }
.hero-specs dd { margin: 0; font-family: var(--font-display); font-size: 18px; font-weight: 700; }
.product-summary .text-action { display: block; margin-top: 16px; }

.application-section { background: var(--surface); }
.application-section > * { max-width: var(--max-width); margin-right: auto; margin-left: auto; }
.application-grid { display: grid; grid-template-columns: 1.1fr .9fr 1fr; border-top: 1px solid var(--line-strong); }
.application-grid article { min-height: 245px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.application-grid article:first-child { padding-left: 0; }
.application-grid article:last-child { border-right: 0; padding-right: 0; }
.application-grid span { color: var(--accent); font-size: 11px; font-weight: 720; text-transform: uppercase; }
.application-grid h3 { margin-top: 52px; }
.application-grid p { color: var(--muted); }

.specifications-section { background: #e8edef; }
.specifications-section > * { max-width: var(--max-width); margin-right: auto; margin-left: auto; }
.spec-groups { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 0; }
.spec-group { padding: 28px; border-radius: var(--radius-card); background: var(--surface); }
.spec-group h3 { margin-bottom: 28px; color: var(--accent); font-size: 19px; }
.spec-group > div { display: grid; gap: 4px; padding: 15px 0; border-top: 1px solid var(--line); }
.spec-group dt { color: var(--muted); font-size: 12px; }
.spec-group dd { margin: 0; font-weight: 680; }

.package-section { max-width: var(--max-width); display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(48px, 8vw, 110px); margin: 0 auto; }
.package-section > article:first-child > p:not(.eyebrow) { max-width: 65ch; color: var(--muted); }
.product-warranty { align-self: start; padding: 34px; border-radius: var(--radius-card); background: var(--navy); color: #d9e5e8; }
.product-warranty h3 { color: #fff; }
.product-warranty dl { margin: 24px 0; }
.product-warranty dl div { display: flex; justify-content: space-between; gap: 20px; padding: 16px 0; border-bottom: 1px solid #3a5560; }
.product-warranty dd { margin: 0; color: #fff; font-weight: 720; }
.product-warranty p { margin-bottom: 0; color: #b8c8ce; }
.related-products { max-width: var(--max-width); margin: 0 auto; }
.related-product-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.related-product-card { min-height: 240px; display: grid; grid-template-columns: minmax(160px, .8fr) 1.2fr; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-card); background: var(--surface); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.related-product-card:hover { transform: translateY(-3px); border-color: var(--line-strong); box-shadow: var(--shadow-sm); }
.related-product-card > img { width: 100%; height: 100%; min-height: 240px; padding: 22px; object-fit: contain; background: #e6edef; }
.related-product-card > div { display: flex; flex-direction: column; justify-content: center; gap: 12px; padding: 28px; }
.related-product-card span { color: var(--muted); font-size: 12px; }
.related-product-card h3 { margin: 0; font-size: 24px; }
.related-product-card .card-actions { margin-top: 14px; }
.model-cta { max-width: calc(var(--max-width) - 144px); display: flex; align-items: center; justify-content: space-between; gap: 42px; margin: 0 auto 96px; border-radius: var(--radius-card); background: var(--surface); box-shadow: var(--shadow-sm); }
.model-cta > div p:last-child { max-width: 62ch; color: var(--muted); }

.oem-hero { min-height: 650px; display: grid; grid-template-columns: .88fr 1.12fr; gap: clamp(50px, 8vw, 110px); align-items: center; background: #e8edef; }
.oem-hero > * { max-width: 640px; }
.oem-path { display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; border: 1px solid var(--line-strong); border-radius: var(--radius-card); background: var(--line); }
.oem-path div { min-height: 190px; display: flex; flex-direction: column; justify-content: space-between; gap: 30px; padding: 26px; background: var(--surface); }
.oem-path span { color: var(--accent); font-size: 11px; font-weight: 760; letter-spacing: .09em; text-transform: uppercase; }
.oem-path strong { max-width: 16ch; font-family: var(--font-display); font-size: 22px; line-height: 1.15; }
.oem-levels > * { max-width: var(--max-width); margin-right: auto; margin-left: auto; }
.level-list { border-top: 1px solid var(--line-strong); }
.level-list article { display: grid; grid-template-columns: 1.18fr .82fr; gap: 60px; align-items: center; padding: 36px 0; border-bottom: 1px solid var(--line); }
.level-copy > span { color: var(--accent); font-size: 11px; font-weight: 760; letter-spacing: .09em; text-transform: uppercase; }
.level-copy h3 { margin-top: 8px; font-size: 30px; }
.level-copy p { max-width: 62ch; margin-bottom: 0; color: var(--muted); }
.level-list dl { margin: 0; }
.level-list dl div { display: flex; justify-content: space-between; gap: 22px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.level-list dt { color: var(--muted); }
.level-list dd { margin: 0; font-weight: 720; text-align: right; }
.disclaimer { margin-top: 20px; }

.process-section { background: var(--navy); color: #d9e5e8; }
.process-section > * { max-width: var(--max-width); margin-right: auto; margin-left: auto; }
.process-section h2 { color: #f4f8f9; }
.process-list { display: grid; grid-template-columns: repeat(5, 1fr); margin: 0; padding: 0; border-top: 1px solid #47606a; list-style: none; }
.process-list li { min-height: 255px; padding: 24px 22px; border-right: 1px solid #38525c; }
.process-list li:last-child { border-right: 0; }
.process-list span { color: #8fb2bb; font-size: 11px; font-weight: 740; text-transform: uppercase; }
.process-list strong { display: block; margin-top: 62px; color: #fff; font-family: var(--font-display); font-size: 20px; line-height: 1.2; }
.process-list p { margin: 12px 0 0; color: #aec0c6; font-size: 14px; }

.tooling-section { max-width: var(--max-width); display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(50px, 8vw, 110px); margin: 0 auto; }
.tooling-copy p:last-child { color: var(--muted); }
.tooling-checks { margin-top: 0; columns: 2; column-gap: 34px; }
.tooling-checks li { break-inside: avoid; }
.requirements-section { background: #e8edef; }
.requirements-section > * { max-width: var(--max-width); margin-right: auto; margin-left: auto; }
.requirements-grid { display: grid; grid-template-columns: repeat(4, 1fr); overflow: hidden; border: 1px solid var(--line-strong); border-radius: var(--radius-card); background: var(--line); }
.requirements-grid span { min-height: 118px; display: flex; align-items: flex-end; padding: 20px; background: var(--surface); font-weight: 650; }
.requirements-section > .button { margin-top: 28px; }

.rfq-layout { max-width: var(--max-width); min-height: 760px; display: grid; grid-template-columns: .72fr 1.28fr; gap: clamp(46px, 7vw, 96px); align-items: start; margin: 0 auto; }
.rfq-intro { position: sticky; top: 92px; }
.rfq-intro h1 { max-width: 13ch; font-size: clamp(2.8rem, 4.6vw, 4.4rem); }
.rfq-intro > p:not(.eyebrow) { max-width: 48ch; color: var(--muted); font-size: 17px; }
.response-note { display: grid; gap: 4px; margin-top: 28px; padding: 16px; border-left: 3px solid var(--accent); background: var(--accent-soft); }
.response-note span { color: var(--ink-soft); font-size: 13px; }
.contact-card { display: grid; gap: 7px; margin-top: 34px; padding: 24px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-style: normal; }
.contact-card span { color: var(--muted); font-size: 11px; font-weight: 720; text-transform: uppercase; }
.contact-card a { width: fit-content; font-weight: 650; text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 4px; }
.rfq-card { overflow: hidden; border: 1px solid var(--line-strong); border-radius: var(--radius-card); background: var(--surface); box-shadow: var(--shadow-sm); }
.step-indicator { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--line); }
.step-tab { min-height: 68px; border: 0; border-right: 1px solid var(--line); background: #edf1f2; color: var(--muted); cursor: pointer; font-size: 12px; font-weight: 650; }
.step-tab:last-child { border-right: 0; }
.step-tab span { display: block; margin-bottom: 2px; font-size: 11px; }
.step-tab.is-active { background: var(--navy); color: #fff; }
.step-tab:disabled { cursor: default; }
.form-step { display: none; min-height: 600px; padding: clamp(28px, 5vw, 52px); }
.form-step.is-active { display: block; }
.step-kicker { margin-bottom: 12px; color: var(--accent); font-size: 11px; font-weight: 760; letter-spacing: .1em; text-transform: uppercase; }
.form-step h2 { max-width: 16ch; font-size: clamp(2rem, 3.2vw, 2.75rem); }
.choice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 28px 0; padding: 0; border: 0; }
.choice-grid legend { grid-column: 1 / -1; margin-bottom: 4px; font-weight: 700; }
.choice-grid label { cursor: pointer; }
.choice-grid input { position: absolute; opacity: 0; pointer-events: none; }
.choice-grid label > span { min-height: 106px; display: flex; flex-direction: column; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius-control); background: #fff; transition: border .2s ease, background .2s ease, box-shadow .2s ease; }
.choice-grid input:focus-visible + span { outline: 3px solid #62aab6; outline-offset: 2px; }
.choice-grid input:checked + span { border-color: var(--accent); background: var(--accent-soft); box-shadow: inset 0 0 0 1px var(--accent); }
.choice-grid small { margin-top: 6px; color: var(--muted); }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; }
.field { display: grid; gap: 7px; margin: 16px 0; }
.field > span { color: var(--ink); font-size: 13px; font-weight: 700; }
.field input, .field select, .field textarea { width: 100%; min-height: 48px; border: 1px solid var(--line-strong); border-radius: var(--radius-control); padding: 12px 13px; background: #fff; color: var(--ink); transition: border-color .2s ease, box-shadow .2s ease; }
.field textarea { min-height: 116px; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: #748188; opacity: 1; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 0; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(11, 102, 117, .16); }
.field [aria-invalid="true"] { border-color: var(--danger); box-shadow: 0 0 0 2px rgba(161, 47, 47, .12); }
.field-error { min-height: 17px; color: var(--danger); font-size: 12px; }
.conditional-fields[hidden] { display: none; }
.conditional-fields { margin-top: 26px; padding-top: 24px; border-top: 1px solid var(--line); }
.conditional-fields h3 { margin-bottom: 0; color: var(--accent); font-size: 16px; }
.consent { display: flex; gap: 11px; align-items: flex-start; margin: 24px 0; color: var(--ink-soft); cursor: pointer; font-size: 13px; }
.consent input { width: 18px; height: 18px; flex: 0 0 auto; margin-top: 2px; accent-color: var(--accent); }
.form-error { min-height: 24px; margin: 8px 0 0; color: var(--danger); font-size: 13px; font-weight: 650; }
.form-actions { display: flex; justify-content: space-between; gap: 14px; margin-top: 32px; }
.form-actions-end { justify-content: flex-end; }
.success-step { text-align: center; }
.success-mark { width: 66px; height: 66px; display: grid; place-items: center; margin: 16px auto 26px; border: 2px solid var(--success); border-radius: 50%; color: var(--success); font-size: 30px; font-weight: 800; }
.success-step h2, .success-step > p { margin-right: auto; margin-left: auto; }
.success-step > p:not(.eyebrow) { max-width: 58ch; color: var(--muted); }
.submission-summary { display: grid; gap: 0; margin: 28px 0; padding: 18px; border-radius: var(--radius-control); background: #eef2f3; text-align: left; }
.submission-summary div { display: grid; grid-template-columns: .65fr 1.35fr; gap: 18px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.submission-summary div:last-child { border-bottom: 0; }
.submission-summary dt { color: var(--muted); }
.submission-summary dd { margin: 0; font-weight: 700; overflow-wrap: anywhere; }
.success-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }

.site-footer { display: grid; grid-template-columns: 1.3fr .7fr 1fr; gap: 44px; align-items: start; background: #10191d; color: #d7e0e3; }
.footer-brand { display: grid; gap: 5px; }
.footer-brand strong { color: #fff; font-family: var(--font-display); font-size: 22px; letter-spacing: .14em; }
.footer-brand span { color: #bcc9cd; font-size: 13px; }
.footer-brand p { max-width: 48ch; margin: 12px 0 0; color: #93a4aa; font-size: 13px; }
.site-footer nav, .site-footer address { display: grid; gap: 10px; font-style: normal; }
.site-footer a { width: fit-content; color: #e9eff1; font-size: 13px; }
.site-footer a:hover { text-decoration: underline; text-underline-offset: 4px; }
.site-footer address span { margin-top: 5px; color: #93a4aa; font-size: 12px; }
.footer-legal { grid-column: 1 / -1; margin: 18px 0 0; padding-top: 18px; border-top: 1px solid #314148; color: #899aa0; font-size: 11px; }
.mobile-rfq { display: none; }

.reveal { opacity: 1; transform: none; }
.motion-ready .reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s var(--ease), transform .65s var(--ease); }
.motion-ready .reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1040px) {
  .home-hero, .product-hero, .oem-hero { grid-template-columns: 1fr; }
  .home-hero { min-height: auto; }
  .hero-copy { max-width: 740px; }
  .product-grid { grid-template-columns: 1fr 1fr; }
  .product-card.is-featured { grid-column: 1 / -1; }
  .evidence-section { grid-template-columns: 1fr; }
  .process-list { grid-template-columns: 1fr; }
  .process-list li { min-height: 150px; border-right: 0; border-bottom: 1px solid #38525c; }
  .process-list strong { margin-top: 28px; }
  .requirements-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .review-bar { align-items: flex-start; flex-direction: column; gap: 7px; padding: 9px 12px; }
  .review-bar > div:first-child { display: grid; gap: 0; }
  .viewport-switch { width: 100%; }
  .viewport-btn { flex: 1; }
  .preview-shell { padding: 0; }
  .site-frame { width: 100%; box-shadow: none; }
  .site-header { min-height: 68px; padding: 0 20px; }
  .menu-toggle { display: inline-flex; }
  .main-nav { position: absolute; top: 68px; right: 0; left: 0; display: none; align-items: stretch; flex-direction: column; gap: 0; padding: 10px 20px 20px; border-bottom: 1px solid var(--line-strong); background: rgba(244, 246, 247, .98); box-shadow: var(--shadow-sm); }
  .main-nav.is-open { display: flex; }
  .main-nav > a { width: 100%; min-height: 48px; }
  .main-nav > a:not(.nav-cta)::after { display: none; }
  .main-nav .nav-cta { justify-content: center; margin-top: 7px; }
  .section-pad { padding: 64px 20px; }
  .compact-pad { padding-top: 18px; padding-bottom: 18px; }
  h1 { max-width: 100%; font-size: clamp(2.7rem, 12vw, 3.9rem); }
  h2 { max-width: 100%; font-size: clamp(2.1rem, 9vw, 3rem); }
  .home-hero { gap: 44px; padding-top: 54px; }
  .hero-visual { min-height: 430px; }
  .hero-product-main { inset: 0 10% 12% 0; }
  .hero-product-side { width: 48%; height: 38%; border-width: 6px; }
  .buyer-strip { grid-template-columns: 1fr; padding: 0 20px; }
  .buyer-strip div { min-height: 82px; }
  .buyer-strip div + div { padding-left: 0; border-left: 0; }
  .product-grid, .sourcing-grid, .capability-list, .warranty-section, .package-section, .tooling-section, .rfq-layout { grid-template-columns: 1fr; }
  .product-card.is-featured { display: block; }
  .product-image, .product-card.is-featured .product-image { height: 270px; min-height: 0; }
  .product-card.is-featured .product-body { min-height: 300px; padding: 24px; }
  .sourcing-panel { min-height: 350px; }
  .evidence-gallery { grid-template-columns: 1fr 1fr; grid-template-rows: 330px 200px; }
  .evidence-gallery .evidence-large { grid-column: 1 / -1; grid-row: auto; min-height: 0; }
  .capability-list article, .capability-list article:nth-child(odd), .capability-list article:nth-child(even) { min-height: 170px; padding: 26px 0; border-right: 0; }
  .warranty-metrics div { grid-template-columns: 1fr; gap: 6px; }
  .final-cta, .model-cta { max-width: none; align-items: flex-start; flex-direction: column; margin: 0 20px 72px; padding: 42px 24px; }
  .product-gallery { min-height: 460px; }
  .gallery-main { inset: 0 8% 10% 0; }
  .gallery-main img { padding: 34px; }
  .gallery-detail { width: 42%; height: 36%; border-width: 6px; }
  .hero-specs { grid-template-columns: 1fr; }
  .hero-specs div { min-height: 76px; }
  .application-grid, .spec-groups, .related-product-grid { grid-template-columns: 1fr; }
  .related-product-card { grid-template-columns: 1fr; }
  .related-product-card > img { height: 220px; min-height: 0; }
  .application-grid article, .application-grid article:first-child, .application-grid article:last-child { min-height: 190px; padding: 26px 0; border-right: 0; }
  .application-grid h3 { margin-top: 26px; }
  .oem-path { grid-template-columns: 1fr; }
  .oem-path div { min-height: 140px; }
  .level-list article { grid-template-columns: 1fr; gap: 20px; }
  .tooling-checks { columns: 1; }
  .requirements-grid { grid-template-columns: 1fr; }
  .requirements-grid span { min-height: 84px; }
  .rfq-intro { position: static; }
  .choice-grid, .field-grid { grid-template-columns: 1fr; }
  .form-step { min-height: 620px; padding: 30px 20px; }
  .form-actions { align-items: stretch; flex-direction: column-reverse; }
  .form-actions .button { width: 100%; }
  .site-footer { grid-template-columns: 1fr; gap: 30px; padding-bottom: 96px; }
  .footer-legal { grid-column: auto; }
  .mobile-rfq { position: fixed; right: 0; bottom: 0; left: 0; z-index: 40; display: block; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); background: rgba(16, 25, 29, .96); backdrop-filter: blur(12px); }
  .mobile-rfq a { min-height: 46px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-control); background: var(--accent); color: #fff; font-weight: 720; }
}

.mobile-mode .site-header { min-height: 68px; padding: 0 20px; }
.mobile-mode .menu-toggle { display: inline-flex; }
.mobile-mode .main-nav { position: absolute; top: 68px; right: 0; left: 0; display: none; align-items: stretch; flex-direction: column; gap: 0; padding: 10px 20px 20px; border-bottom: 1px solid var(--line-strong); background: rgba(244, 246, 247, .98); box-shadow: var(--shadow-sm); }
.mobile-mode .main-nav.is-open { display: flex; }
.mobile-mode .main-nav > a { width: 100%; min-height: 48px; }
.mobile-mode .main-nav > a:not(.nav-cta)::after { display: none; }
.mobile-mode .main-nav .nav-cta { justify-content: center; margin-top: 7px; }
.mobile-mode .section-pad { padding: 64px 20px; }
.mobile-mode .compact-pad { padding-top: 18px; padding-bottom: 18px; }
.mobile-mode h1 { max-width: 100%; font-size: 46px; }
.mobile-mode h2 { max-width: 100%; font-size: 36px; }
.mobile-mode .home-hero, .mobile-mode .product-hero, .mobile-mode .oem-hero, .mobile-mode .product-grid, .mobile-mode .sourcing-grid, .mobile-mode .evidence-section, .mobile-mode .capability-list, .mobile-mode .warranty-section, .mobile-mode .package-section, .mobile-mode .tooling-section, .mobile-mode .rfq-layout { grid-template-columns: 1fr; }
.mobile-mode .home-hero { min-height: auto; gap: 44px; padding-top: 54px; }
.mobile-mode .hero-visual { min-height: 430px; }
.mobile-mode .hero-product-main { inset: 0 10% 12% 0; }
.mobile-mode .hero-product-side { width: 48%; height: 38%; border-width: 6px; }
.mobile-mode .buyer-strip { grid-template-columns: 1fr; padding: 0 20px; }
.mobile-mode .buyer-strip div { min-height: 82px; }
.mobile-mode .buyer-strip div + div { padding-left: 0; border-left: 0; }
.mobile-mode .product-card.is-featured { display: block; grid-column: auto; }
.mobile-mode .product-image, .mobile-mode .product-card.is-featured .product-image { height: 270px; min-height: 0; }
.mobile-mode .product-card.is-featured .product-body { min-height: 300px; padding: 24px; }
.mobile-mode .sourcing-panel { min-height: 350px; }
.mobile-mode .evidence-gallery { grid-template-columns: 1fr; grid-template-rows: none; }
.mobile-mode .evidence-gallery .evidence-large { grid-column: auto; grid-row: auto; min-height: 330px; }
.mobile-mode .evidence-gallery figure { min-height: 210px; }
.mobile-mode .capability-list article, .mobile-mode .capability-list article:nth-child(odd), .mobile-mode .capability-list article:nth-child(even) { min-height: 170px; padding: 26px 0; border-right: 0; }
.mobile-mode .warranty-metrics div { grid-template-columns: 1fr; gap: 6px; }
.mobile-mode .final-cta, .mobile-mode .model-cta { max-width: none; align-items: flex-start; flex-direction: column; margin: 0 20px 72px; padding: 42px 24px; }
.mobile-mode .product-gallery { min-height: 460px; }
.mobile-mode .gallery-main { inset: 0 8% 10% 0; }
.mobile-mode .gallery-main img { padding: 34px; }
.mobile-mode .gallery-detail { width: 42%; height: 36%; border-width: 6px; }
.mobile-mode .hero-specs, .mobile-mode .application-grid, .mobile-mode .spec-groups, .mobile-mode .related-product-grid, .mobile-mode .oem-path, .mobile-mode .process-list, .mobile-mode .requirements-grid, .mobile-mode .choice-grid, .mobile-mode .field-grid { grid-template-columns: 1fr; }
.mobile-mode .related-product-card { grid-template-columns: 1fr; }
.mobile-mode .related-product-card > img { height: 220px; min-height: 0; }
.mobile-mode .hero-specs div { min-height: 76px; }
.mobile-mode .application-grid article, .mobile-mode .application-grid article:first-child, .mobile-mode .application-grid article:last-child { min-height: 190px; padding: 26px 0; border-right: 0; }
.mobile-mode .application-grid h3 { margin-top: 26px; }
.mobile-mode .oem-path div { min-height: 140px; }
.mobile-mode .level-list article { grid-template-columns: 1fr; gap: 20px; }
.mobile-mode .process-list li { min-height: 150px; border-right: 0; border-bottom: 1px solid #38525c; }
.mobile-mode .process-list strong { margin-top: 28px; }
.mobile-mode .tooling-checks { columns: 1; }
.mobile-mode .requirements-grid span { min-height: 84px; }
.mobile-mode .rfq-intro { position: static; }
.mobile-mode .form-step { min-height: 620px; padding: 30px 20px; }
.mobile-mode .form-actions { align-items: stretch; flex-direction: column-reverse; }
.mobile-mode .form-actions .button { width: 100%; }
.mobile-mode .site-footer { grid-template-columns: 1fr; gap: 30px; padding-bottom: 96px; }
.mobile-mode .footer-legal { grid-column: auto; }
.mobile-mode .mobile-rfq { position: absolute; right: 0; bottom: 0; left: 0; z-index: 40; display: block; padding: 10px 16px; background: rgba(16, 25, 29, .96); }
.mobile-mode .mobile-rfq a { min-height: 46px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-control); background: var(--accent); color: #fff; font-weight: 720; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .reveal { opacity: 1; transform: none; }
}